Hi everybody,
current linux version is 2.6.26-rc8 and I think this is the right time
to send latest patches againts rc8 for Microblaze CPU.
I fixed there some issues which were reported to me.
We have there still problem with syscalls and we don't have chance to
fix it to stable version, this is not part which I can do yourself.
Microblaze will be n + 1 platform which use some old syscalls.
I hope you understand.
I am sending more than 50 patches and I would like to see ACKs for patches
which are good and comments for patches which are bad.
Thanks for your time and review.
Best regards,
Michal Simek
http://www.monstr.eu
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/delay.h | 30 ++++++++++++++++++++++++++++++
include/asm-microblaze/timex.h | 18 ++++++++++++++++++
2 files changed, 48 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/delay.h
create mode 100644 include/asm-microblaze/timex.h
diff --git a/include/asm-microblaze/delay.h b/include/asm-microblaze/delay.h
new file mode 100644
index 0000000..cdafdad
--- /dev/null
+++ b/include/asm-microblaze/delay.h
@@ -0,0 +1,30 @@
+/*
+ * include/asm-microblaze/delay.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#ifndef _ASM_MICROBLAZE_DELAY_H
+#define _ASM_MICROBLAZE_DELAY_H
+
+extern unsigned long loops_per_jiffy;
+
+extern inline void __delay(unsigned long loops)
+{
+ asm volatile ("# __delay \n\t" \
+ "1: addi %0, %0, -1 \t\n" \
+ "bneid %0, 1b \t\n" \
+ "nop \t\n"
+ : "=r" (loops)
+ : "0" (loops));
+}
+
+static inline void udelay(unsigned long usec)
+{
+}
+
+#endif /* _ASM_MICROBLAZE_DELAY_H */
diff --git a/include/asm-microblaze/timex.h b/include/asm-microblaze/timex.h
new file mode 100644
index 0000000..678525d
--- /dev/null
+++ b/include/asm-microblaze/timex.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_TIMEX_H
+#define _ASM_MICROBLAZE_TIMEX_H
+
+#define CLOCK_TICK_RATE 1000 /* Timer input freq. */
+
+typedef unsigned long cycles_t;
+
+#define get_cycles() (0)
+
+#endif /* _ASM_TIMEX_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/init_task.c | 28 ++++++++
arch/microblaze/kernel/process.c | 127 ++++++++++++++++++++++++++++++++++++
2 files changed, 155 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/init_task.c
create mode 100644 arch/microblaze/kernel/process.c
diff --git a/arch/microblaze/kernel/init_task.c b/arch/microblaze/kernel/init_task.c
new file mode 100644
index 0000000..c841b55
--- /dev/null
+++ b/arch/microblaze/kernel/init_task.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/init_task.h>
+#include <linux/fs.h>
+#include <linux/mqueue.h>
+
+#include <asm/pgtable.h>
+
+static struct fs_struct init_fs = INIT_FS;
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM(init_mm);
+EXPORT_SYMBOL(init_mm);
+
+union thread_union init_thread_union
+ __attribute__((__section__(".data.init_task"))) =
+{ INIT_THREAD_INFO(init_task) };
+
+struct task_struct init_task = INIT_TASK(init_task);
+EXPORT_SYMBOL(init_task);
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
new file mode 100644
index 0000000..c8e6bef
--- /dev/null
+++ b/arch/microblaze/kernel/process.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+
+#include <asm/system.h>
+
+/* FIXME */
+void show_regs(struct pt_regs *regs)
+{
+ unsigned long *p;
+ int i;
+ printk(KERN_INFO "pc:\t0x%08lx\tsp:\t0x%08lx\n", regs->pc, regs->r1);
+ printk(KERN_INFO
+ "flags:\t0x%08lx\tear:\t0x%08lx\tesr:\t"
+ "0x%08lx\tfsr:\t0x%08lx\n",
+ regs->msr, regs->ear, regs->esr, regs->fsr);
+ printk(KERN_INFO
+ "r0:\t0x%08lx\tr1:\t0x%08lx\tr2:\t0x%08lx\tr3\t0x%08lx\n",
+ 0L, regs->r1, regs->r2, regs->r3);
+ for (i = 4, p = &(regs->r4); i < 32; i += 4, p += 4) {
+ printk(KERN_INFO "r%i:\t0x%08lx\tr%i:\t0x%08lx\tr%i:\t"
+ "0x%08lx\tr%i:\t0x%08lx\n",
+ i, *p, i+1, *(p+1), i+2, *(p+2), i+3, *(p+3));
+ }
+ printk(KERN_INFO "\n");
+}
+
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
+
+void cpu_idle(void)
+{
+ set_thread_flag(TIF_POLLING_NRFLAG);
+
+ while (1) {
+ while (!need_resched())
+ cpu_relax();
+
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ }
+}
+
+void flush_thread(void)
+{
+}
+
+int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
+ unsigned long unused,
+ struct task_struct *p, struct pt_regs *regs)
+{
+ struct pt_regs *childregs = task_pt_regs(p);
+ struct thread_info *ti = task_thread_info(p);
+
+ *childregs = *regs;
+
+ if (user_mode(regs))
+ childregs->r1 = usp;
+ else
+ childregs->r1 = ((unsigned long) ti) + THREAD_SIZE;
+
+ memset(&ti->cpu_context, 0, sizeof(struct cpu_context));
+ ti->cpu_context.r1 = (unsigned long)childregs;
+ ti->cpu_context.msr = (unsigned long)childregs->msr;
+ ti->cpu_context.r15 = (unsigned long)ret_from_fork - 8;
+
+ if (clone_flags & CLONE_SETTLS)
+ ;/* FIXME: not sure what to do */
+
+ return 0;
+}
+
+/*
+ * Return saved PC of a blocked thread.
+ * FIXME this needs to be checked
+ */
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+ struct cpu_context *ctx =
+ &(((struct thread_info *)(tsk->stack))->cpu_context);
+
+ /* Check whether the thread is blocked in resume() */
+ if (in_sched_functions(ctx->r15))
+ return ((unsigned long)ctx->r15);
+ else
+ return ctx->r14;
+}
+
+static void kernel_thread_helper(int (*fn)(void *), void *arg)
+{
+ fn(arg);
+ do_exit(-1);
+}
+
+int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
+{
+ struct pt_regs regs;
+ int ret;
+
+ memset(®s, 0, sizeof(regs));
+ /* store them in non-volatile registers */
+ regs.r5 = (unsigned long)fn;
+ regs.r6 = (unsigned long)arg;
+ local_save_flags(regs.msr);
+ regs.pc = (unsigned long)kernel_thread_helper;
+ regs.kernel_mode = 1;
+
+ ret = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
+ ®s, 0, NULL, NULL);
+
+ return ret;
+}
+
+unsigned long get_wchan(struct task_struct *p)
+{
+/* TBD (used by procfs) */
+ return 0;
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/cpu/cache.c | 255 +++++++++++++++++++++++++++++++++++
include/asm-microblaze/cache.h | 44 ++++++
include/asm-microblaze/cacheflush.h | 75 ++++++++++
3 files changed, 374 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/cpu/cache.c
create mode 100644 include/asm-microblaze/cache.h
create mode 100644 include/asm-microblaze/cacheflush.h
diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
new file mode 100644
index 0000000..9dcf3e9
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -0,0 +1,255 @@
+/*
+ * Cache control for MicroBlaze cache memories
+ *
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ * Copyright (C) 2007 John Williams <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ */
+
+#include <asm/cacheflush.h>
+#include <asm/cache.h>
+#include <asm/cpuinfo.h>
+
+/* Exported functions */
+
+void _enable_icache(void)
+{
+ if (cpuinfo.use_icache) {
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ __asm__ __volatile__ (" \
+ msrset r0, %0; \
+ nop; " \
+ : \
+ : "i" (MSR_ICE) \
+ : "memory");
+#else
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ ori r12, r12, %0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (MSR_ICE) \
+ : "memory", "r12");
+#endif
+ }
+}
+
+void _disable_icache(void)
+{
+ if (cpuinfo.use_icache) {
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ __asm__ __volatile__ (" \
+ msrclr r0, %0; \
+ nop; " \
+ : \
+ : "i" (MSR_ICE) \
+ : "memory");
+#else
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ andi r12, r12, ~%0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (MSR_ICE) \
+ : "memory", "r12");
+#endif
+ }
+}
+
+void _invalidate_icache(unsigned int addr)
+{
+ if (cpuinfo.use_icache) {
+ __asm__ __volatile__ (" \
+ wic %0, r0" \
+ : \
+ : "r" (addr));
+ }
+}
+
+void _enable_dcache(void)
+{
+ if (cpuinfo.use_dcache) {
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ __asm__ __volatile__ (" \
+ msrset r0, %0; \
+ nop; " \
+ : \
+ : "i" (MSR_DCE) \
+ : "memory");
+#else
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ ori r12, r12, %0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (MSR_DCE) \
+ : "memory", "r12");
+#endif
+ }
+}
+
+void _disable_dcache(void)
+{
+ if (cpuinfo.use_dcache) {
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ __asm__ __volatile__ (" \
+ msrclr r0, %0; \
+ nop; " \
+ : \
+ : "i" (MSR_DCE) \
+ : "memory");
+#else
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ andi r12, r12, ~%0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (MSR_DCE) \
+ : "memory", "r12");
+#endif
+ }
+}
+
+void _invalidate_dcache(unsigned int addr)
+{
+ if (cpuinfo.use_dcache)
+ __asm__ __volatile__ (" \
+ wdc %0, r0" \
+ : \
+ : "r" (addr));
+}
+
+void __invalidate_icache_all(void)
+{
+ unsigned int i;
+ unsigned flags;
+
+ if (cpuinfo.use_icache) {
+ local_irq_save(flags);
+ __disable_icache();
+
+ /* Just loop through cache size and invalidate, no need to add
+ CACHE_BASE address */
+ for (i = 0; i < cpuinfo.icache_size;
+ i += cpuinfo.icache_line)
+ __invalidate_icache(i);
+
+ __enable_icache();
+ local_irq_restore(flags);
+ }
+}
+
+void __invalidate_icache_range(unsigned long start, unsigned long end)
+{
+ unsigned int i;
+ unsigned flags;
+ unsigned int align;
+
+ if (cpuinfo.use_icache) {
+ /*
+ * No need to cover entire cache range,
+ * just cover cache footprint
+ */
+ end = min(start + cpuinfo.icache_size, end);
+ align = ~(cpuinfo.icache_line - 1);
+ start &= align; /* Make sure we are aligned */
+ /* Push end up to the next cache line */
+ end = ((end & align) + cpuinfo.icache_line);
+
+ local_irq_save(flags);
+ __disable_icache();
+
+ for (i = start; i < end; i += cpuinfo.icache_line)
+ __invalidate_icache(i);
+
+ __enable_icache();
+ local_irq_restore(flags);
+ }
+}
+
+void __invalidate_icache_page(struct vm_area_struct *vma, struct page *page)
+{
+ __invalidate_icache_all();
+}
+
+void __invalidate_icache_user_range(struct vm_area_struct *vma,
+ struct page *page, unsigned long adr,
+ int len)
+{
+ __invalidate_icache_all();
+}
+
+void __invalidate_cache_sigtramp(unsigned long addr)
+{
+ __invalidate_icache_range(addr, addr + 8);
+}
+
+void __invalidate_dcache_all(void)
+{
+ unsigned int i;
+ unsigned flags;
+
+ if (cpuinfo.use_dcache) {
+ local_irq_save(flags);
+ __disable_dcache();
+
+ /*
+ * Just loop through cache size and invalidate,
+ * no need to add CACHE_BASE address
+ */
+ for (i = 0; i < cpuinfo.dcache_size;
+ i += cpuinfo.dcache_line)
+ __invalidate_dcache(i);
+
+ __enable_dcache();
+ local_irq_restore(flags);
+ }
+}
+
+void __invalidate_dcache_range(unsigned long start, unsigned long end)
+{
+ unsigned int i;
+ unsigned flags;
+ unsigned int align;
+
+ if (cpuinfo.use_dcache) {
+ /*
+ * No need to cover entire cache range,
+ * just cover cache footprint
+ */
+ end = min(start + cpuinfo.dcache_size, end);
+ align = ~(cpuinfo.dcache_line - 1);
+ start &= align; /* Make sure we are aligned */
+ /* Push end up to the next cache line */
+ end = ((end & align) + cpuinfo.dcache_line);
+ local_irq_save(flags);
+ __disable_dcache();
+
+ for (i = start; i < end; i += cpuinfo.dcache_line)
+ __invalidate_dcache(i);
+
+ __enable_dcache();
+ local_irq_restore(flags);
+ }
+}
+
+void __invalidate_dcache_page(struct vm_area_struct *vma, struct page *page)
+{
+ __invalidate_dcache_all();
+}
+
+void __invalidate_dcache_user_range(struct vm_area_struct *vma,
+ struct page *page, unsigned long adr,
+ int len)
+{
+ __invalidate_dcache_all();
+}
diff --git a/include/asm-microblaze/cache.h b/include/asm-microblaze/cache.h
new file mode 100644
index 0000000..08828ec
--- /dev/null
+++ b/include/asm-microblaze/cache.h
@@ -0,0 +1,44 @@
+/*
+ * Cache operations
+ *
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2003 John Williams <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_CACHE_H
+#define _ASM_MICROBLAZE_CACHE_H
+
+#include <asm/registers.h>
+#include <linux/autoconf.h>
+
+#ifndef L1_CACHE_BYTES
+/* word-granular cache in microblaze */
+#define L1_CACHE_BYTES 4
+#endif
+
+void _enable_icache(void);
+void _disable_icache(void);
+void _invalidate_icache(unsigned int addr);
+
+#define __enable_icache() _enable_icache()
+#define __disable_icache() _disable_icache()
+#define __invalidate_icache(addr) _invalidate_icache(addr)
+
+void _enable_dcache(void);
+void _disable_dcache(void);
+void _invalidate_dcache(unsigned int addr);
+
+#define __enable_dcache() _enable_dcache()
+#define __disable_dcache() _disable_dcache()
+#define __invalidate_dcache(addr) _invalidate_dcache(addr)
+
+/* FIXME - I don't think this is right */
+#ifdef CONFIG_XILINX_UNCACHED_SHADOW
+#define UNCACHED_SHADOW_MASK (CONFIG_XILINX_ERAM_SIZE)
+#endif
+
+#endif /* _ASM_MICROBLAZE_CACHE_H */
diff --git a/include/asm-microblaze/cacheflush.h b/include/asm-microblaze/cacheflush.h
new file mode 100644
index 0000000..6afe017
--- /dev/null
+++ b/include/asm-microblaze/cacheflush.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2007 PetaLogix
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * based on v850 version which was
+ * Copyright (C) 2001,02,03 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03 Miles Bader <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ */
+
+#ifndef _ASM_MICROBLAZE_CACHEFLUSH_H
+#define _ASM_MICROBLAZE_CACHEFLUSH_H
+
+/* Somebody depends on this; sigh... */
+#include <linux/mm.h>
+
+/*
+ * Cache handling functions.
+ * Microblaze has a write-through data cache, and no icache snooping of dcache
+ */
+
+#define flush_cache_all() __invalidate_cache_all()
+#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_range(vma, start, end) __invalidate_cache_all()
+#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
+
+#define flush_dcache_range(start, end) __invalidate_dcache_range(start, end)
+#define flush_dcache_page(page) do { } while (0)
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+
+#define flush_icache_range(start, len) __invalidate_icache_range(start, len)
+#define flush_icache_page(vma, pg) do { } while (0)
+
+#define flush_cache_vmap(start, end) do { } while (0)
+#define flush_cache_vunmap(start, end) do { } while (0)
+
+struct page;
+struct mm_struct;
+struct vm_area_struct;
+
+/* see arch/microblaze/kernel/cache.c */
+extern void __invalidate_icache_all(void);
+extern void __invalidate_icache_range(unsigned long start, unsigned long end);
+extern void __invalidate_icache_page(struct vm_area_struct *vma, struct page *page);
+extern void __invalidate_icache_user_range(struct vm_area_struct *vma,
+ struct page *page,
+ unsigned long adr, int len);
+extern void __invalidate_cache_sigtramp(unsigned long addr);
+
+extern void __invalidate_dcache_all(void);
+extern void __invalidate_dcache_range(unsigned long start, unsigned long end);
+extern void __invalidate_dcache_page(struct vm_area_struct *vma, struct page *page);
+extern void __invalidate_dcache_user_range(struct vm_area_struct *vma,
+ struct page *page,
+ unsigned long adr, int len);
+
+extern inline void __invalidate_cache_all(void)
+{
+ __invalidate_icache_all();
+ __invalidate_dcache_all();
+}
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { memcpy((dst), (src), (len)); \
+ flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
+} while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy((dst), (src), (len))
+
+#endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/lib/memcpy.c | 160 +++++++++++++++++++++++++++++++++++++
arch/microblaze/lib/memmove.c | 174 +++++++++++++++++++++++++++++++++++++++++
arch/microblaze/lib/memset.c | 78 ++++++++++++++++++
3 files changed, 412 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/lib/memcpy.c
create mode 100644 arch/microblaze/lib/memmove.c
create mode 100644 arch/microblaze/lib/memset.c
diff --git a/arch/microblaze/lib/memcpy.c b/arch/microblaze/lib/memcpy.c
new file mode 100644
index 0000000..199668d
--- /dev/null
+++ b/arch/microblaze/lib/memcpy.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * Reasonably optimised generic C-code for memcpy on Microblaze
+ * This is generic C code to do efficient, alignment-aware memcpy.
+ *
+ * It is based on demo code originally Copyright 2001 by Intel Corp, taken from
+ * http://www.embedded.com/showArticle.jhtml?articleID=19205567
+ *
+ * Attempts were made, unsuccesfully, to contact the original
+ * author of this code (Michael Morrow, Intel). Below is the original
+ * copyright notice.
+ *
+ * This software has been developed by Intel Corporation.
+ * Intel specifically disclaims all warranties, express or
+ * implied, and all liability, including consequential and
+ * other indirect damages, for the use of this program, including
+ * liability for infringement of any proprietary rights,
+ * and including the warranties of merchantability and fitness
+ * for a particular purpose. Intel does not assume any
+ * responsibility for and errors which may appear in this program
+ * not any responsibility to update it.
+ */
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
+
+#include <asm/string.h>
+#include <asm/system.h>
+
+#ifdef __HAVE_ARCH_MEMCPY
+void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
+{
+ const char *src = v_src;
+ char *dst = v_dst;
+#ifndef CONFIG_OPT_LIB_FUNCTION
+ /* Simple, byte oriented memcpy. */
+ while (c--)
+ *dst++ = *src++;
+
+ return v_dst;
+#else
+ /* The following code tries to optimize the copy by using unsigned
+ * alignment. This will work fine if both source and destination are
+ * aligned on the same boundary. However, if they are aligned on
+ * different boundaries shifts will be necessary. This might result in
+ * bad performance on MicroBlaze systems without a barrel shifter.
+ */
+ const uint32_t *i_src;
+ uint32_t *i_dst;
+
+ if (c >= 4) {
+ unsigned value, buf_hold;
+
+ /* Align the dstination to a word boundry. */
+ /* This is done in an endian independant manner. */
+ switch ((unsigned long)dst & 3) {
+ case 1:
+ *dst++ = *src++;
+ --c;
+ case 2:
+ *dst++ = *src++;
+ --c;
+ case 3:
+ *dst++ = *src++;
+ --c;
+ }
+
+ i_dst = (void *)dst;
+
+ /* Choose a copy scheme based on the source */
+ /* alignment relative to dstination. */
+ switch ((unsigned long)src & 3) {
+ case 0x0: /* Both byte offsets are aligned */
+ i_src = (const void *)src;
+
+ for (; c >= 4; c -= 4)
+ *i_dst++ = *i_src++;
+
+ src = (const void *)i_src;
+ break;
+ case 0x1: /* Unaligned - Off by 1 */
+ /* Word align the source */
+ i_src = (const void *) ((unsigned)src & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *i_src++ << 8;
+
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | value >> 24;
+ buf_hold = value << 8;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src -= 3;
+ break;
+ case 0x2: /* Unaligned - Off by 2 */
+ /* Word align the source */
+ i_src = (const void *) ((unsigned)src & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *i_src++ << 16;
+
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | value >> 16;
+ buf_hold = value << 16;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src -= 2;
+ break;
+ case 0x3: /* Unaligned - Off by 3 */
+ /* Word align the source */
+ i_src = (const void *) ((unsigned)src & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *i_src++ << 24;
+
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | value >> 8;
+ buf_hold = value << 24;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src -= 1;
+ break;
+ }
+ dst = (void *)i_dst;
+ }
+
+ /* Finish off any remaining bytes */
+ /* simple fast copy, ... unless a cache boundry is crossed */
+ switch (c) {
+ case 3:
+ *dst++ = *src++;
+ case 2:
+ *dst++ = *src++;
+ case 1:
+ *dst++ = *src++;
+ }
+
+ return v_dst;
+#endif
+}
+EXPORT_SYMBOL(memcpy);
+#endif /* __HAVE_ARCH_MEMCPY */
+
+
+void *cacheable_memcpy(void *d, const void *s, __kernel_size_t c)
+{
+ return memcpy(d, s, c);
+}
diff --git a/arch/microblaze/lib/memmove.c b/arch/microblaze/lib/memmove.c
new file mode 100644
index 0000000..4db1ea6
--- /dev/null
+++ b/arch/microblaze/lib/memmove.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * Reasonably optimised generic C-code for memcpy on Microblaze
+ * This is generic C code to do efficient, alignment-aware memmove.
+ *
+ * It is based on demo code originally Copyright 2001 by Intel Corp, taken from
+ * http://www.embedded.com/showArticle.jhtml?articleID=19205567
+ *
+ * Attempts were made, unsuccesfully, to contact the original
+ * author of this code (Michael Morrow, Intel). Below is the original
+ * copyright notice.
+ *
+ * This software has been developed by Intel Corporation.
+ * Intel specifically disclaims all warranties, express or
+ * implied, and all liability, including consequential and
+ * other indirect damages, for the use of this program, including
+ * liability for infringement of any proprietary rights,
+ * and including the warranties of merchantability and fitness
+ * for a particular purpose. Intel does not assume any
+ * responsibility for and errors which may appear in this program
+ * not any responsibility to update it.
+ */
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
+
+#include <asm/string.h>
+
+#ifdef __HAVE_ARCH_MEMMOVE
+void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
+{
+ const char *src = v_src;
+ char *dst = v_dst;
+
+#ifdef CONFIG_OPT_LIB_FUNCTION
+ const uint32_t *i_src;
+ uint32_t *i_dst;
+#endif
+
+ if (!c)
+ return v_dst;
+
+ /* Use memcpy when source is higher than dest */
+ if (v_dst <= v_src)
+ return memcpy(v_dst, v_src, c);
+
+#ifndef CONFIG_OPT_LIB_FUNCTION
+ /* copy backwards, from end to beginning */
+ src += c;
+ dst += c;
+
+ /* Simple, byte oriented memmove. */
+ while (c--)
+ *--dst = *--src;
+
+ return v_dst;
+#else
+ /* The following code tries to optimize the copy by using unsigned
+ * alignment. This will work fine if both source and destination are
+ * aligned on the same boundary. However, if they are aligned on
+ * different boundaries shifts will be necessary. This might result in
+ * bad performance on MicroBlaze systems without a barrel shifter.
+ */
+ /* FIXME this part needs more test */
+ /* Do a descending copy - this is a bit trickier! */
+ dst += c;
+ src += c;
+
+ if (c >= 4) {
+ unsigned value, buf_hold;
+
+ /* Align the destination to a word boundry. */
+ /* This is done in an endian independant manner. */
+
+ switch ((unsigned long)dst & 3) {
+ case 3:
+ *--dst = *--src;
+ --c;
+ case 2:
+ *--dst = *--src;
+ --c;
+ case 1:
+ *--dst = *--src;
+ --c;
+ }
+
+ i_dst = (void *)dst;
+ /* Choose a copy scheme based on the source */
+ /* alignment relative to dstination. */
+ switch ((unsigned long)src & 3) {
+ case 0x0: /* Both byte offsets are aligned */
+
+ i_src = (const void *)src;
+
+ for (; c >= 4; c -= 4)
+ *--i_dst = *--i_src;
+
+ src = (const void *)i_src;
+ break;
+ case 0x1: /* Unaligned - Off by 1 */
+ /* Word align the source */
+ i_src = (const void *) (((unsigned)src + 4) & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *--i_src >> 24;
+
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold << 8 | value;
+ buf_hold = value >> 24;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src += 1;
+ break;
+ case 0x2: /* Unaligned - Off by 2 */
+ /* Word align the source */
+ i_src = (const void *) (((unsigned)src + 4) & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *--i_src >> 16;
+
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold << 16 | value;
+ buf_hold = value >> 16;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src += 2;
+ break;
+ case 0x3: /* Unaligned - Off by 3 */
+ /* Word align the source */
+ i_src = (const void *) (((unsigned)src + 4) & ~3);
+
+ /* Load the holding buffer */
+ buf_hold = *--i_src >> 8;
+
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold << 24 | value;
+ buf_hold = value >> 8;
+ }
+
+ /* Realign the source */
+ src = (const void *)i_src;
+ src += 3;
+ break;
+ }
+ dst = (void *)i_dst;
+ }
+
+ /* simple fast copy, ... unless a cache boundry is crossed */
+ /* Finish off any remaining bytes */
+ switch (c) {
+ case 4:
+ *--dst = *--src;
+ case 3:
+ *--dst = *--src;
+ case 2:
+ *--dst = *--src;
+ case 1:
+ *--dst = *--src;
+ }
+ return v_dst;
+#endif
+}
+EXPORT_SYMBOL(memmove);
+#endif /* __HAVE_ARCH_MEMMOVE */
diff --git a/arch/microblaze/lib/memset.c b/arch/microblaze/lib/memset.c
new file mode 100644
index 0000000..6a2f4e5
--- /dev/null
+++ b/arch/microblaze/lib/memset.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * Reasonably optimised generic C-code for memset on Microblaze
+ * This is generic C code to do efficient, alignment-aware memcpy.
+ *
+ * It is based on demo code originally Copyright 2001 by Intel Corp, taken from
+ * http://www.embedded.com/showArticle.jhtml?articleID=19205567
+ *
+ * Attempts were made, unsuccesfully, to contact the original
+ * author of this code (Michael Morrow, Intel). Below is the original
+ * copyright notice.
+ *
+ * This software has been developed by Intel Corporation.
+ * Intel specifically disclaims all warranties, express or
+ * implied, and all liability, including consequential and
+ * other indirect damages, for the use of this program, including
+ * liability for infringement of any proprietary rights,
+ * and including the warranties of merchantability and fitness
+ * for a particular purpose. Intel does not assume any
+ * responsibility for and errors which may appear in this program
+ * not any responsibility to update it.
+ */
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
+
+#include <asm/string.h>
+
+#ifdef __HAVE_ARCH_MEMSET
+void *memset(void *v_src, int c, __kernel_size_t n)
+{
+
+ char *src = v_src;
+#ifdef CONFIG_OPT_LIB_FUNCTION
+ uint32_t *i_src;
+ uint32_t w32;
+#endif
+ /* Truncate c to 8 bits */
+ c = (c & 0xFF);
+
+#ifdef CONFIG_OPT_LIB_FUNCTION
+ /* Make a repeating word out of it */
+ w32 = c;
+ w32 |= w32 << 8;
+ w32 |= w32 << 16;
+
+ if (n >= 4) {
+ /* Align the destination to a word boundary */
+ /* This is done in an endian independant manner */
+ switch ((unsigned) src & 3) {
+ case 1: *src++ = c;
+ --n;
+ case 2: *src++ = c;
+ --n;
+ case 3: *src++ = c;
+ --n;
+ }
+
+ i_src = (void *)src;
+
+ /* Do as many full-word copies as we can */
+ for (; n >= 4; n -= 4)
+ *i_src++ = w32;
+
+ src = (void *)i_src;
+ }
+#endif
+ /* Simple, byte oriented memset or the rest of count. */
+ while (n--)
+ *src++ = c;
+
+ return v_src;
+}
+EXPORT_SYMBOL(memset);
+#endif /* __HAVE_ARCH_MEMSET */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/ptrace.c | 206 +++++++++++++++++++++++++++++++++++++++
include/asm-microblaze/ptrace.h | 68 +++++++++++++
2 files changed, 274 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/ptrace.c
create mode 100644 include/asm-microblaze/ptrace.h
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
new file mode 100644
index 0000000..834d463
--- /dev/null
+++ b/arch/microblaze/kernel/ptrace.c
@@ -0,0 +1,206 @@
+/*
+ * `ptrace' system call
+ *
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ * Copyright (C) 2004-07 John Williams <[email protected]>
+ *
+ * derived from arch/v850/kernel/ptrace.c
+ *
+ * Copyright (C) 2002,03 NEC Electronics Corporation
+ * Copyright (C) 2002,03 Miles Bader <[email protected]>
+ *
+ * Derived from arch/mips/kernel/ptrace.c:
+ *
+ * Copyright (C) 1992 Ross Biro
+ * Copyright (C) Linus Torvalds
+ * Copyright (C) 1994, 95, 96, 97, 98, 2000 Ralf Baechle
+ * Copyright (C) 1996 David S. Miller
+ * Kevin D. Kissell, [email protected] and Carsten Langgaard, [email protected]
+ * Copyright (C) 1999 MIPS Technologies, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/ptrace.h>
+#include <linux/signal.h>
+
+#include <asm/errno.h>
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+#include <asm/asm-offsets.h>
+
+/* Returns the address where the register at REG_OFFS in P is stashed away. */
+static microblaze_reg_t *reg_save_addr(unsigned reg_offs,
+ struct task_struct *t)
+{
+ struct pt_regs *regs;
+
+ /*
+ * Three basic cases:
+ *
+ * (1) A register normally saved before calling the scheduler, is
+ * available in the kernel entry pt_regs structure at the top
+ * of the kernel stack. The kernel trap/irq exit path takes
+ * care to save/restore almost all registers for ptrace'd
+ * processes.
+ *
+ * (2) A call-clobbered register, where the process P entered the
+ * kernel via [syscall] trap, is not stored anywhere; that's
+ * OK, because such registers are not expected to be preserved
+ * when the trap returns anyway (so we don't actually bother to
+ * test for this case).
+ *
+ * (3) A few registers not used at all by the kernel, and so
+ * normally never saved except by context-switches, are in the
+ * context switch state.
+ */
+
+ /* Register saved during kernel entry (or not available). */
+ regs = task_pt_regs(t);
+
+ return (microblaze_reg_t *)((char *)regs + reg_offs);
+}
+
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+ int rval;
+
+ switch (request) {
+ unsigned long val, copied;
+
+ case PTRACE_PEEKTEXT: /* read word at location addr. */
+ case PTRACE_PEEKDATA:
+ pr_debug("PEEKTEXT/PEEKDATA at %08lX\n", addr);
+ copied = access_process_vm(child, addr, &val, sizeof(val), 0);
+ rval = -EIO;
+ if (copied != sizeof(val))
+ break;
+ rval = put_user(val, (unsigned long *)data);
+ goto out;
+
+ case PTRACE_POKETEXT: /* write the word at location addr. */
+ case PTRACE_POKEDATA:
+ pr_debug("POKETEXT/POKEDATA to %08lX\n", addr);
+ rval = 0;
+ if (access_process_vm(child, addr, &data, sizeof(data), 1)
+ == sizeof(data))
+ break;
+ rval = -EIO;
+ goto out;
+
+ /* Read/write the word at location ADDR in the registers. */
+ case PTRACE_PEEKUSR:
+ case PTRACE_POKEUSR:
+ pr_debug("PEEKUSR/POKEUSR : 0x%08lx\n", addr);
+ rval = 0;
+ if (addr >= PT_SIZE && request == PTRACE_PEEKUSR) {
+ /* Special requests that don't actually correspond
+ to offsets in struct pt_regs. */
+ if (addr == PT_TEXT_ADDR) {
+ val = child->mm->start_code;
+ } else if (addr == PT_DATA_ADDR) {
+ val = child->mm->start_data;
+ } else if (addr == PT_TEXT_LEN) {
+ val = child->mm->end_code
+ - child->mm->start_code;
+ } else {
+ rval = -EIO;
+ }
+ } else if (addr >= 0 && addr < PT_SIZE && (addr & 0x3) == 0) {
+ microblaze_reg_t *reg_addr = reg_save_addr(addr, child);
+ if (request == PTRACE_PEEKUSR)
+ val = *reg_addr;
+ else
+ *reg_addr = data;
+ } else
+ rval = -EIO;
+
+ if (rval == 0 && request == PTRACE_PEEKUSR)
+ rval = put_user(val, (unsigned long *)data);
+ goto out;
+
+ /* Continue and stop at next (return from) syscall */
+ case PTRACE_SYSCALL:
+ pr_debug("PTRACE_SYSCALL\n");
+ case PTRACE_SINGLESTEP:
+ pr_debug("PTRACE_SINGLESTEP\n");
+ /* Restart after a signal. */
+ case PTRACE_CONT:
+ pr_debug("PTRACE_CONT\n");
+ rval = -EIO;
+ if (!valid_signal(data))
+ break;
+
+ if (request == PTRACE_SYSCALL)
+ set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+ else
+ clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+
+ child->exit_code = data;
+ pr_debug("wakeup_process\n");
+ wake_up_process(child);
+ rval = 0;
+ break;
+
+ /*
+ * make the child exit. Best I can do is send it a sigkill.
+ * perhaps it should be put in the status that it wants to
+ * exit.
+ */
+ case PTRACE_KILL:
+ pr_debug("PTRACE_KILL\n");
+ rval = 0;
+ if (child->exit_state == EXIT_ZOMBIE) /* already dead */
+ break;
+ child->exit_code = SIGKILL;
+ wake_up_process(child);
+ break;
+
+ case PTRACE_DETACH: /* detach a process that was attached. */
+ pr_debug("PTRACE_DETACH\n");
+ rval = ptrace_detach(child, data);
+ break;
+
+ default:
+ rval = -EIO;
+ goto out;
+ }
+ out:
+ return rval;
+}
+
+#if 0
+static asmlinkage void syscall_trace(void)
+{
+ if (!test_thread_flag(TIF_SYSCALL_TRACE))
+ return;
+ if (!(current->ptrace & PT_PTRACED))
+ return;
+ /* The 0x80 provides a way for the tracing parent to distinguish
+ between a syscall stop and SIGTRAP delivery */
+ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+ ? 0x80 : 0));
+ /*
+ * this isn't the same as continuing with a signal, but it will do
+ * for normal use. strace only continues with a signal if the
+ * stopping signal is not SIGTRAP. -brl
+ */
+ if (current->exit_code) {
+ send_sig(current->exit_code, current, 1);
+ current->exit_code = 0;
+ }
+}
+#endif
+
+void ptrace_disable(struct task_struct *child)
+{
+ /* nothing to do */
+}
diff --git a/include/asm-microblaze/ptrace.h b/include/asm-microblaze/ptrace.h
new file mode 100644
index 0000000..122f4af
--- /dev/null
+++ b/include/asm-microblaze/ptrace.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_PTRACE_H
+#define _ASM_MICROBLAZE_PTRACE_H
+
+#ifndef __ASSEMBLY__
+#include <asm/types.h>
+
+typedef unsigned long microblaze_reg_t;
+
+struct pt_regs {
+ microblaze_reg_t r0;
+ microblaze_reg_t r1;
+ microblaze_reg_t r2;
+ microblaze_reg_t r3;
+ microblaze_reg_t r4;
+ microblaze_reg_t r5;
+ microblaze_reg_t r6;
+ microblaze_reg_t r7;
+ microblaze_reg_t r8;
+ microblaze_reg_t r9;
+ microblaze_reg_t r10;
+ microblaze_reg_t r11;
+ microblaze_reg_t r12;
+ microblaze_reg_t r13;
+ microblaze_reg_t r14;
+ microblaze_reg_t r15;
+ microblaze_reg_t r16;
+ microblaze_reg_t r17;
+ microblaze_reg_t r18;
+ microblaze_reg_t r19;
+ microblaze_reg_t r20;
+ microblaze_reg_t r21;
+ microblaze_reg_t r22;
+ microblaze_reg_t r23;
+ microblaze_reg_t r24;
+ microblaze_reg_t r25;
+ microblaze_reg_t r26;
+ microblaze_reg_t r27;
+ microblaze_reg_t r28;
+ microblaze_reg_t r29;
+ microblaze_reg_t r30;
+ microblaze_reg_t r31;
+ microblaze_reg_t pc;
+ microblaze_reg_t msr;
+ microblaze_reg_t ear;
+ microblaze_reg_t esr;
+ microblaze_reg_t fsr;
+ int kernel_mode;
+};
+
+#define kernel_mode(regs) ((regs)->kernel_mode)
+#define user_mode(regs) (!kernel_mode(regs))
+
+#define instruction_pointer(regs) ((regs)->pc)
+#define profile_pc(regs) instruction_pointer(regs)
+
+extern void show_regs(struct pt_regs *);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_MICROBLAZE_PTRACE_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-generic/checksum.h | 101 ++++++++++++++++++++++
include/asm-microblaze/checksum.h | 1 +
lib/Makefile | 2 +
lib/checksum.c | 166 +++++++++++++++++++++++++++++++++++++
4 files changed, 270 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/checksum.h
create mode 100644 include/asm-microblaze/checksum.h
create mode 100644 lib/checksum.c
diff --git a/include/asm-generic/checksum.h b/include/asm-generic/checksum.h
new file mode 100644
index 0000000..b40f0f8
--- /dev/null
+++ b/include/asm-generic/checksum.h
@@ -0,0 +1,101 @@
+/*
+ * include/asm-generic/checksum.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#ifndef _ASM_GENERIC_CHECKSUM_H
+#define _ASM_GENERIC_CHECKSUM_H
+
+#include <linux/in6.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+unsigned int csum_partial(const unsigned char *buff, int len,
+ unsigned int sum);
+
+/*
+ * the same as csum_partial, but copies from src while it
+ * checksums
+ *
+ * here even more important to align src and dst on a 32-bit (or even
+ * better 64-bit) boundary
+ */
+unsigned int csum_partial_copy(const char *src, char *dst, int len, int sum);
+
+/*
+ * the same as csum_partial_copy, but copies from user space.
+ *
+ * here even more important to align src and dst on a 32-bit (or even
+ * better 64-bit) boundary
+ */
+extern unsigned int csum_partial_copy_from_user(const char *src, char *dst,
+ int len, int sum, int *csum_err);
+
+#define csum_partial_copy_nocheck(src, dst, len, sum) \
+ csum_partial_copy((src), (dst), (len), (sum))
+
+/*
+ * This is a version of ip_compute_csum() optimized for IP headers,
+ * which always checksum on 4 octet boundaries.
+ *
+ */
+extern unsigned short ip_fast_csum(unsigned char *iph, unsigned int ihl);
+
+/*
+ * Fold a partial checksum
+ */
+static inline unsigned int csum_fold(unsigned int sum)
+{
+ sum = (sum & 0xffff) + (sum >> 16);
+ sum = (sum & 0xffff) + (sum >> 16);
+ return ~sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static inline unsigned int
+csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned short len,
+ unsigned short proto, unsigned int sum)
+{
+ __asm__("add %0, %4, %1\n\t"
+ "addc %0, %4, %2\n\t"
+ "addc %0, %4, %3\n\t"
+ "addc %0, %4, r0\n\t"
+ : "=d" (sum)
+ : "d" (saddr), "d" (daddr), "d" (len + proto),
+ "0"(sum));
+
+ return sum;
+}
+
+static inline unsigned short int
+csum_tcpudp_magic(unsigned long saddr, unsigned long daddr, unsigned short len,
+ unsigned short proto, unsigned int sum)
+{
+ return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+extern unsigned short ip_compute_csum(const unsigned char *buff, int len);
+
+#endif /* _ASM_GENERIC_CHECKSUM_H */
diff --git a/include/asm-microblaze/checksum.h b/include/asm-microblaze/checksum.h
new file mode 100644
index 0000000..adbb5e6
--- /dev/null
+++ b/include/asm-microblaze/checksum.h
@@ -0,0 +1 @@
+#include <asm-generic/checksum.h>
diff --git a/lib/Makefile b/lib/Makefile
index 74b0cfb..6f48c04 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -72,6 +72,8 @@ lib-$(CONFIG_GENERIC_BUG) += bug.o
obj-$(CONFIG_HAVE_LMB) += lmb.o
+obj-$(CONFIG_GENERIC_CSUM) += checksum.o
+
hostprogs-y := gen_crc32table
clean-files := crc32table.h
diff --git a/lib/checksum.c b/lib/checksum.c
new file mode 100644
index 0000000..0060873
--- /dev/null
+++ b/lib/checksum.c
@@ -0,0 +1,166 @@
+/*
+ * arch/microblaze/lib/checksum.c
+ *
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * IP/TCP/UDP checksumming routines
+ *
+ * Authors: Jorge Cwik, <[email protected]>
+ * Arnt Gulbrandsen, <[email protected]>
+ * Tom May, <[email protected]>
+ * Andreas Schwab, <[email protected]>
+ * Lots of code moved from tcp.c and ip.c; see those files
+ * for more names.
+ *
+ * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek:
+ * Fixed some nasty bugs, causing some horrible crashes.
+ * A: At some points, the sum (%0) was used as
+ * length-counter instead of the length counter
+ * (%1). Thanks to Roman Hodek for pointing this out.
+ * B: GCC seems to mess up if one uses too many
+ * data-registers to hold input values and one tries to
+ * specify d0 and d1 as scratch registers. Letting gcc choose these
+ * registers itself solves the problem.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access
+ kills, so most of the assembly has to go. */
+
+#include <net/checksum.h>
+#include <asm-generic/checksum.h>
+#include <linux/module.h>
+
+static inline unsigned short from32to16(unsigned long x)
+{
+ /* add up 16-bit and 16-bit for 16+c bit */
+ x = (x & 0xffff) + (x >> 16);
+ /* add up carry.. */
+ x = (x & 0xffff) + (x >> 16);
+ return x;
+}
+
+static unsigned long do_csum(const unsigned char *buff, int len)
+{
+ int odd, count;
+ unsigned long result = 0;
+
+ if (len <= 0)
+ goto out;
+ odd = 1 & (unsigned long) buff;
+ if (odd) {
+ result = *buff;
+ len--;
+ buff++;
+ }
+ count = len >> 1; /* nr of 16-bit words.. */
+ if (count) {
+ if (2 & (unsigned long) buff) {
+ result += *(unsigned short *) buff;
+ count--;
+ len -= 2;
+ buff += 2;
+ }
+ count >>= 1; /* nr of 32-bit words.. */
+ if (count) {
+ unsigned long carry = 0;
+ do {
+ unsigned long w = *(unsigned long *) buff;
+ count--;
+ buff += 4;
+ result += carry;
+ result += w;
+ carry = (w > result);
+ } while (count);
+ result += carry;
+ result = (result & 0xffff) + (result >> 16);
+ }
+ if (len & 2) {
+ result += *(unsigned short *) buff;
+ buff += 2;
+ }
+ }
+ if (len & 1)
+ result += (*buff << 8);
+ result = from32to16(result);
+ if (odd)
+ result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
+out:
+ return result;
+}
+
+/*
+ * This is a version of ip_compute_csum() optimized for IP headers,
+ * which always checksum on 4 octet boundaries.
+ */
+unsigned short ip_fast_csum(unsigned char *iph, unsigned int ihl)
+{
+ return ~do_csum(iph, ihl*4);
+}
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+unsigned int csum_partial(const unsigned char *buff, int len, unsigned int sum)
+{
+ unsigned int result = do_csum(buff, len);
+
+ /* add in old sum, and carry.. */
+ result += sum;
+ if (sum > result)
+ result += 1;
+ return result;
+}
+EXPORT_SYMBOL(csum_partial);
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+unsigned short ip_compute_csum(const unsigned char *buff, int len)
+{
+ return ~do_csum(buff, len);
+}
+EXPORT_SYMBOL(ip_compute_csum);
+
+/*
+ * copy from fs while checksumming, otherwise like csum_partial
+ */
+unsigned int
+csum_partial_copy_from_user(const char __user *src, char *dst, int len,
+ int sum, int *csum_err)
+{
+ if (csum_err)
+ *csum_err = 0;
+ memcpy(dst, src, len);
+ return csum_partial(dst, len, sum);
+}
+EXPORT_SYMBOL(csum_partial_copy_from_user);
+
+/*
+ * copy from ds while checksumming, otherwise like csum_partial
+ */
+unsigned int
+csum_partial_copy(const char *src, char *dst, int len, int sum)
+{
+ memcpy(dst, src, len);
+ return csum_partial(dst, len, sum);
+}
+EXPORT_SYMBOL(csum_partial_copy);
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/posix_types.h | 69 ++++++++++++++++++++++++++++++++++
include/asm-microblaze/types.h | 62 ++++++++++++++++++++++++++++++
2 files changed, 131 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/posix_types.h
create mode 100644 include/asm-microblaze/types.h
diff --git a/include/asm-microblaze/posix_types.h b/include/asm-microblaze/posix_types.h
new file mode 100644
index 0000000..4e6412d
--- /dev/null
+++ b/include/asm-microblaze/posix_types.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_POSIX_TYPES_H
+#define _ASM_MICROBLAZE_POSIX_TYPES_H
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc. Also, we cannot
+ * assume GCC is being used.
+ */
+
+typedef unsigned long __kernel_ino_t;
+typedef unsigned int __kernel_mode_t;
+typedef unsigned int __kernel_nlink_t;
+typedef long __kernel_off_t;
+typedef int __kernel_pid_t;
+typedef unsigned int __kernel_ipc_pid_t;
+typedef unsigned int __kernel_uid_t;
+typedef unsigned int __kernel_gid_t;
+typedef unsigned int __kernel_size_t;
+typedef int __kernel_ssize_t;
+typedef int __kernel_ptrdiff_t;
+typedef long __kernel_time_t;
+typedef long __kernel_suseconds_t;
+typedef long __kernel_clock_t;
+typedef int __kernel_timer_t;
+typedef int __kernel_clockid_t;
+typedef int __kernel_daddr_t;
+typedef char * __kernel_caddr_t;
+typedef unsigned short __kernel_uid16_t;
+typedef unsigned short __kernel_gid16_t;
+typedef unsigned int __kernel_uid32_t;
+typedef unsigned int __kernel_gid32_t;
+
+#ifdef __GNUC__
+typedef long long __kernel_loff_t;
+#endif
+
+typedef struct {
+#if defined(__KERNEL__) || defined(__USE_ALL)
+ int val[2];
+#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+ int __val[2];
+#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+} __kernel_fsid_t;
+
+#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+
+#undef __FD_SET
+#define __FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
+
+#undef __FD_CLR
+#define __FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
+
+#undef __FD_ISSET
+#define __FD_ISSET(d, set) (!!((set)->fds_bits[__FDELT(d)] & __FDMASK(d)))
+
+#undef __FD_ZERO
+#define __FD_ZERO(fdsetp) (memset (fdsetp, 0, sizeof(*(fd_set *)fdsetp)))
+
+#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */
+
+#endif /* _ASM_MICROBLAZE_POSIX_TYPES_H */
diff --git a/include/asm-microblaze/types.h b/include/asm-microblaze/types.h
new file mode 100644
index 0000000..449ab8d
--- /dev/null
+++ b/include/asm-microblaze/types.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_TYPES_H
+#define _ASM_MICROBLAZE_TYPES_H
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+/*
+ * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
+ * header files exported to user space
+ */
+
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
+typedef __signed__ long long __s64;
+typedef unsigned long long __u64;
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+typedef __signed__ char s8;
+typedef unsigned char u8;
+
+typedef __signed__ short s16;
+typedef unsigned short u16;
+
+typedef __signed__ int s32;
+typedef unsigned int u32;
+
+typedef __signed__ long long s64;
+typedef unsigned long long u64;
+
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide. */
+
+typedef u32 dma_addr_t;
+
+#endif/* __KERNEL__ */
+#endif
+
+#endif /* _ASM_MICROBLAZE_TYPES_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/lmb.h | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/lmb.h
diff --git a/include/asm-microblaze/lmb.h b/include/asm-microblaze/lmb.h
new file mode 100644
index 0000000..a0a0a92
--- /dev/null
+++ b/include/asm-microblaze/lmb.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_LMB_H
+#define _ASM_MICROBLAZE_LMB_H
+
+/* LMB limit is OFF */
+#define LMB_REAL_LIMIT 0xFFFFFFFF
+
+#endif /* _ASM_MICROBLAZE_LMB_H */
+
+
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/traps.c | 86 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 86 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/traps.c
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
new file mode 100644
index 0000000..69d75ee
--- /dev/null
+++ b/arch/microblaze/kernel/traps.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/kallsyms.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <asm/exceptions.h>
+#include <asm/system.h>
+
+void trap_init(void)
+{
+ initialize_exception_handlers();
+ __enable_hw_exceptions();
+}
+
+void __bad_xchg(volatile void *ptr, int size)
+{
+ printk(KERN_INFO "xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n",
+ __builtin_return_address(0), ptr, size);
+ BUG();
+}
+EXPORT_SYMBOL(__bad_xchg);
+
+static int kstack_depth_to_print = 24;
+
+void show_trace(struct task_struct *task, unsigned long *stack)
+{
+ unsigned long addr;
+
+ if (!stack)
+ stack = (unsigned long *)&stack;
+
+ printk(KERN_INFO "Call Trace: ");
+#ifdef CONFIG_KALLSYMS
+ printk(KERN_INFO "\n");
+#endif
+ while (!kstack_end(stack)) {
+ addr = *stack++;
+ if (__kernel_text_address(addr)) {
+ printk(KERN_INFO "[<%08lx>] ", addr);
+ print_symbol("%s\n", addr);
+ }
+ }
+ printk(KERN_INFO "\n");
+}
+
+void show_stack(struct task_struct *task, unsigned long *sp)
+{
+ unsigned long *stack;
+ int i;
+
+ if (sp == NULL) {
+ if (task)
+ sp = (unsigned long *) ((struct thread_info *)
+ (task->stack))->cpu_context.r1;
+ else
+ sp = (unsigned long *)&sp;
+ }
+
+ stack = sp;
+
+ printk(KERN_INFO "\nStack:\n ");
+
+ for (i = 0; i < kstack_depth_to_print; i++) {
+ if (kstack_end(sp))
+ break;
+ if (i && ((i % 8) == 0))
+ printk("\n ");
+ printk("%08lx ", *sp++);
+ }
+ printk("\n");
+ show_trace(task, stack);
+}
+
+void dump_stack(void)
+{
+ show_stack(NULL, NULL);
+}
+EXPORT_SYMBOL(dump_stack);
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/ioctl.h | 1 +
include/asm-microblaze/ioctls.h | 91 +++++++++++++++++++++++++++++++++++++++
2 files changed, 92 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/ioctl.h
create mode 100644 include/asm-microblaze/ioctls.h
diff --git a/include/asm-microblaze/ioctl.h b/include/asm-microblaze/ioctl.h
new file mode 100644
index 0000000..b279fe0
--- /dev/null
+++ b/include/asm-microblaze/ioctl.h
@@ -0,0 +1 @@
+#include <asm-generic/ioctl.h>
diff --git a/include/asm-microblaze/ioctls.h b/include/asm-microblaze/ioctls.h
new file mode 100644
index 0000000..76c963f
--- /dev/null
+++ b/include/asm-microblaze/ioctls.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_IOCTLS_H
+#define _ASM_MICROBLAZE_IOCTLS_H
+
+#include <asm/ioctl.h>
+
+/* 0x54 is just a magic number to make these relatively unique ('T') */
+
+#define TCGETS 0x5401
+#define TCSETS 0x5402
+#define TCSETSW 0x5403
+#define TCSETSF 0x5404
+#define TCGETA 0x5405
+#define TCSETA 0x5406
+#define TCSETAW 0x5407
+#define TCSETAF 0x5408
+#define TCSBRK 0x5409
+#define TCXONC 0x540A
+#define TCFLSH 0x540B
+#define TIOCEXCL 0x540C
+#define TIOCNXCL 0x540D
+#define TIOCSCTTY 0x540E
+#define TIOCGPGRP 0x540F
+#define TIOCSPGRP 0x5410
+#define TIOCOUTQ 0x5411
+#define TIOCSTI 0x5412
+#define TIOCGWINSZ 0x5413
+#define TIOCSWINSZ 0x5414
+#define TIOCMGET 0x5415
+#define TIOCMBIS 0x5416
+#define TIOCMBIC 0x5417
+#define TIOCMSET 0x5418
+#define TIOCGSOFTCAR 0x5419
+#define TIOCSSOFTCAR 0x541A
+#define FIONREAD 0x541B
+#define TIOCINQ FIONREAD
+#define TIOCLINUX 0x541C
+#define TIOCCONS 0x541D
+#define TIOCGSERIAL 0x541E
+#define TIOCSSERIAL 0x541F
+#define TIOCPKT 0x5420
+#define FIONBIO 0x5421
+#define TIOCNOTTY 0x5422
+#define TIOCSETD 0x5423
+#define TIOCGETD 0x5424
+#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */
+#define TIOCTTYGSTRUCT 0x5426 /* For debugging only */
+#define TIOCSBRK 0x5427 /* BSD compatibility */
+#define TIOCCBRK 0x5428 /* BSD compatibility */
+#define TIOCGSID 0x5429 /* Return the session ID of FD */
+/* Get Pty Number (of pty-mux device) */
+#define TIOCGPTN _IOR('T', 0x30, unsigned int)
+#define TIOCSPTLCK _IOW('T', 0x31, int) /* Lock/unlock Pty */
+
+#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */
+#define FIOCLEX 0x5451
+#define FIOASYNC 0x5452
+#define TIOCSERCONFIG 0x5453
+#define TIOCSERGWILD 0x5454
+#define TIOCSERSWILD 0x5455
+#define TIOCGLCKTRMIOS 0x5456
+#define TIOCSLCKTRMIOS 0x5457
+#define TIOCSERGSTRUCT 0x5458 /* For debugging only */
+#define TIOCSERGETLSR 0x5459 /* Get line status register */
+#define TIOCSERGETMULTI 0x545A /* Get multiport config */
+#define TIOCSERSETMULTI 0x545B /* Set multiport config */
+
+#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */
+#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */
+
+#define FIOQSIZE 0x545E
+
+/* Used for packet mode */
+#define TIOCPKT_DATA 0
+#define TIOCPKT_FLUSHREAD 1
+#define TIOCPKT_FLUSHWRITE 2
+#define TIOCPKT_STOP 4
+#define TIOCPKT_START 8
+#define TIOCPKT_NOSTOP 16
+#define TIOCPKT_DOSTOP 32
+
+#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */
+
+#endif /* _ASM_MICROBLAZE_IOCTLS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/processor.h | 87 ++++++++++++++++
include/asm-microblaze/pvr.h | 183 ++++++++++++++++++++++++++++++++++
include/asm-microblaze/system.h | 190 ++++++++++++++++++++++++++++++++++++
3 files changed, 460 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/processor.h
create mode 100644 include/asm-microblaze/pvr.h
create mode 100644 include/asm-microblaze/system.h
diff --git a/include/asm-microblaze/processor.h b/include/asm-microblaze/processor.h
new file mode 100644
index 0000000..b88419c
--- /dev/null
+++ b/include/asm-microblaze/processor.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_PROCESSOR_H
+#define _ASM_MICROBLAZE_PROCESSOR_H
+
+#include <asm/ptrace.h>
+#include <asm/setup.h>
+
+/*
+ * User space process size: memory size
+ *
+ * TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
+ * user processes and the kernel is on the same memory region. They
+ * both share the memory space and that is limited by the amount of
+ * physical memory. thus, we set TASK_SIZE == amount of total memory.
+ */
+
+#define TASK_SIZE (0x81000000 - 0x80000000)
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's. We won't be using it
+ */
+#define TASK_UNMAPPED_BASE 0
+
+struct task_struct;
+
+/* thread_struct is gone. use thread_info instead. */
+struct thread_struct { };
+#define INIT_THREAD { }
+
+/* Do necessary setup to start up a newly executed thread. */
+static inline void start_thread(struct pt_regs *regs,
+ unsigned long pc,
+ unsigned long usp)
+{
+ regs->pc = pc;
+ regs->r1 = usp;
+ regs->kernel_mode = 0;
+}
+
+/* Free all resources held by a thread. */
+static inline void release_thread(struct task_struct *dead_task)
+{
+}
+
+/* Free all resources held by a thread. */
+static inline void exit_thread(void)
+{
+}
+
+extern unsigned long thread_saved_pc(struct task_struct *t);
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+/* FIXME */
+#define cpu_relax() do {} while (0)
+#define prepare_to_copy(tsk) do {} while (0)
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+/* #define task_thread_info(task) (task)->thread_info */
+/* #define task_stack_page(task) ((void*)((task)->thread_info)) */
+
+#define task_pt_regs(tsk) \
+ (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
+
+
+#define KSTK_EIP(tsk) (0)
+#define KSTK_ESP(tsk) (0)
+
+#endif /* _ASM_MICROBLAZE_PROCESSOR_H */
diff --git a/include/asm-microblaze/pvr.h b/include/asm-microblaze/pvr.h
new file mode 100644
index 0000000..1c67731
--- /dev/null
+++ b/include/asm-microblaze/pvr.h
@@ -0,0 +1,183 @@
+/*
+ * Support for the MicroBlaze PVR (Processor Version Register)
+ *
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ */
+#ifndef _ASM_MICROBLAZE_PVR_H
+#define _ASM_MICROBLAZE_PVR_H
+
+#define PVR_MSR_BIT 0x400
+
+struct pvr_s {
+ unsigned pvr[16];
+};
+
+/* The following taken from Xilinx's standalone BSP pvr.h */
+
+/* Basic PVR mask */
+#define PVR0_PVR_FULL_MASK 0x80000000
+#define PVR0_USE_BARREL_MASK 0x40000000
+#define PVR0_USE_DIV_MASK 0x20000000
+#define PVR0_USE_HW_MUL_MASK 0x10000000
+#define PVR0_USE_FPU_MASK 0x08000000
+#define PVR0_USE_EXCEPTION_MASK 0x04000000
+#define PVR0_USE_ICACHE_MASK 0x02000000
+#define PVR0_USE_DCACHE_MASK 0x01000000
+#define PVR0_VERSION_MASK 0x0000FF00
+#define PVR0_USER1_MASK 0x000000FF
+
+/* User 2 PVR mask */
+#define PVR1_USER2_MASK 0xFFFFFFFF
+
+/* Configuration PVR masks */
+#define PVR2_D_OPB_MASK 0x80000000
+#define PVR2_D_LMB_MASK 0x40000000
+#define PVR2_I_OPB_MASK 0x20000000
+#define PVR2_I_LMB_MASK 0x10000000
+#define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000
+#define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000
+#define PVR2_USE_MSR_INSTR 0x00020000
+#define PVR2_USE_PCMP_INSTR 0x00010000
+#define PVR2_AREA_OPTIMISED 0x00008000
+#define PVR2_USE_BARREL_MASK 0x00004000
+#define PVR2_USE_DIV_MASK 0x00002000
+#define PVR2_USE_HW_MUL_MASK 0x00001000
+#define PVR2_USE_FPU_MASK 0x00000800
+#define PVR2_USE_MUL64_MASK 0x00000400
+#define PVR2_OPCODE_0x0_ILLEGAL_MASK 0x00000040
+#define PVR2_UNALIGNED_EXCEPTION_MASK 0x00000020
+#define PVR2_ILL_OPCODE_EXCEPTION_MASK 0x00000010
+#define PVR2_IOPB_BUS_EXCEPTION_MASK 0x00000008
+#define PVR2_DOPB_BUS_EXCEPTION_MASK 0x00000004
+#define PVR2_DIV_ZERO_EXCEPTION_MASK 0x00000002
+#define PVR2_FPU_EXCEPTION_MASK 0x00000001
+
+/* Debug and exception PVR masks */
+#define PVR3_DEBUG_ENABLED_MASK 0x80000000
+#define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000
+#define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
+#define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
+#define PVR3_FSL_LINKS_MASK 0x00000380
+
+/* ICache config PVR masks */
+#define PVR4_USE_ICACHE_MASK 0x80000000
+#define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000
+#define PVR4_ICACHE_USE_FSL_MASK 0x02000000
+#define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000
+#define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000
+#define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000
+
+/* DCache config PVR masks */
+#define PVR5_USE_DCACHE_MASK 0x80000000
+#define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000
+#define PVR5_DCACHE_USE_FSL_MASK 0x02000000
+#define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000
+#define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000
+#define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000
+
+/* ICache base address PVR mask */
+#define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF
+
+/* ICache high address PVR mask */
+#define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF
+
+/* DCache base address PVR mask */
+#define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF
+
+/* DCache high address PVR mask */
+#define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF
+
+/* Target family PVR mask */
+#define PVR10_TARGET_FAMILY_MASK 0xFF000000
+
+/* MSR Reset value PVR mask */
+#define PVR11_MSR_RESET_VALUE_MASK 0x000007FF
+
+
+/* PVR access macros */
+#define PVR_IS_FULL(pvr) (pvr.pvr[0] & PVR0_PVR_FULL_MASK)
+#define PVR_USE_BARREL(pvr) (pvr.pvr[0] & PVR0_USE_BARREL_MASK)
+#define PVR_USE_DIV(pvr) (pvr.pvr[0] & PVR0_USE_DIV_MASK)
+#define PVR_USE_HW_MUL(pvr) (pvr.pvr[0] & PVR0_USE_HW_MUL_MASK)
+#define PVR_USE_FPU(pvr) (pvr.pvr[0] & PVR0_USE_FPU_MASK)
+#define PVR_USE_ICACHE(pvr) (pvr.pvr[0] & PVR0_USE_ICACHE_MASK)
+#define PVR_USE_DCACHE(pvr) (pvr.pvr[0] & PVR0_USE_DCACHE_MASK)
+#define PVR_VERSION(pvr) ((pvr.pvr[0] & PVR0_VERSION_MASK) >> 8)
+#define PVR_USER1(pvr) (pvr.pvr[0] & PVR0_USER1_MASK)
+#define PVR_USER2(pvr) (pvr.pvr[1] & PVR1_USER2_MASK)
+
+#define PVR_D_OPB(pvr) (pvr.pvr[2] & PVR2_D_OPB_MASK)
+#define PVR_D_LMB(pvr) (pvr.pvr[2] & PVR2_D_LMB_MASK)
+#define PVR_I_OPB(pvr) (pvr.pvr[2] & PVR2_I_OPB_MASK)
+#define PVR_I_LMB(pvr) (pvr.pvr[2] & PVR2_I_LMB_MASK)
+#define PVR_INTERRUPT_IS_EDGE(pvr) \
+ (pvr.pvr[2] & PVR2_INTERRUPT_IS_EDGE_MASK)
+#define PVR_EDGE_IS_POSITIVE(pvr) \
+ (pvr.pvr[2] & PVR2_EDGE_IS_POSITIVE_MASK)
+#define PVR_USE_MSR_INSTR(pvr) (pvr.pvr[2] & PVR2_USE_MSR_INSTR)
+#define PVR_USE_PCMP_INSTR(pvr) (pvr.pvr[2] & PVR2_USE_PCMP_INSTR)
+#define PVR_AREA_OPTIMISED(pvr) (pvr.pvr[2] & PVR2_AREA_OPTIMISED)
+#define PVR_USE_MUL64(pvr) (pvr.pvr[2] & PVR2_USE_MUL64_MASK)
+#define PVR_OPCODE_0x0_ILLEGAL(pvr) \
+ (pvr.pvr[2] & PVR2_OPCODE_0x0_ILLEGAL_MASK)
+#define PVR_UNALIGNED_EXCEPTION(pvr) \
+ (pvr.pvr[2] & PVR2_UNALIGNED_EXCEPTION_MASK)
+#define PVR_ILL_OPCODE_EXCEPTION(pvr) \
+ (pvr.pvr[2] & PVR2_ILL_OPCODE_EXCEPTION_MASK)
+#define PVR_IOPB_BUS_EXCEPTION(pvr) \
+ (pvr.pvr[2] & PVR2_IOPB_BUS_EXCEPTION_MASK)
+#define PVR_DOPB_BUS_EXCEPTION(pvr) \
+ (pvr.pvr[2] & PVR2_DOPB_BUS_EXCEPTION_MASK)
+#define PVR_DIV_ZERO_EXCEPTION(pvr) \
+ (pvr.pvr[2] & PVR2_DIV_ZERO_EXCEPTION_MASK)
+#define PVR_FPU_EXCEPTION(pvr) (pvr.pvr[2] & PVR2_FPU_EXCEPTION_MASK)
+
+#define PVR_DEBUG_ENABLED(pvr) (pvr.pvr[3] & PVR3_DEBUG_ENABLED_MASK)
+#define PVR_NUMBER_OF_PC_BRK(pvr) \
+ ((pvr.pvr[3] & PVR3_NUMBER_OF_PC_BRK_MASK) >> 25)
+#define PVR_NUMBER_OF_RD_ADDR_BRK(pvr) \
+ ((pvr.pvr[3] & PVR3_NUMBER_OF_RD_ADDR_BRK_MASK) >> 19)
+#define PVR_NUMBER_OF_WR_ADDR_BRK(pvr) \
+ ((pvr.pvr[3] & PVR3_NUMBER_OF_WR_ADDR_BRK_MASK) >> 13)
+#define PVR_FSL_LINKS(pvr) ((pvr.pvr[3] & PVR3_FSL_LINKS_MASK) >> 7)
+
+#define PVR_ICACHE_ADDR_TAG_BITS(pvr) \
+ ((pvr.pvr[4] & PVR4_ICACHE_ADDR_TAG_BITS_MASK) >> 26)
+#define PVR_ICACHE_USE_FSL(pvr) (pvr.pvr[4] & PVR4_ICACHE_USE_FSL_MASK)
+#define PVR_ICACHE_ALLOW_WR(pvr) (pvr.pvr[4] & PVR4_ICACHE_ALLOW_WR_MASK)
+#define PVR_ICACHE_LINE_LEN(pvr) \
+ (1 << ((pvr.pvr[4] & PVR4_ICACHE_LINE_LEN_MASK) >> 21))
+#define PVR_ICACHE_BYTE_SIZE(pvr) \
+ (1 << ((pvr.pvr[4] & PVR4_ICACHE_BYTE_SIZE_MASK) >> 16))
+
+#define PVR_DCACHE_ADDR_TAG_BITS(pvr) \
+ ((pvr.pvr[5] & PVR5_DCACHE_ADDR_TAG_BITS_MASK) >> 26)
+#define PVR_DCACHE_USE_FSL(pvr) (pvr.pvr[5] & PVR5_DCACHE_USE_FSL_MASK)
+#define PVR_DCACHE_ALLOW_WR(pvr) (pvr.pvr[5] & PVR5_DCACHE_ALLOW_WR_MASK)
+#define PVR_DCACHE_LINE_LEN(pvr) \
+ (1 << ((pvr.pvr[5] & PVR5_DCACHE_LINE_LEN_MASK) >> 21))
+#define PVR_DCACHE_BYTE_SIZE(pvr) \
+ (1 << ((pvr.pvr[5] & PVR5_DCACHE_BYTE_SIZE_MASK) >> 16))
+
+
+#define PVR_ICACHE_BASEADDR(pvr) (pvr.pvr[6] & PVR6_ICACHE_BASEADDR_MASK)
+#define PVR_ICACHE_HIGHADDR(pvr) (pvr.pvr[7] & PVR7_ICACHE_HIGHADDR_MASK)
+
+#define PVR_DCACHE_BASEADDR(pvr) (pvr.pvr[8] & PVR8_DCACHE_BASEADDR_MASK)
+#define PVR_DCACHE_HIGHADDR(pvr) (pvr.pvr[9] & PVR9_DCACHE_HIGHADDR_MASK)
+
+#define PVR_TARGET_FAMILY(pvr) ((pvr.pvr[10] & PVR10_TARGET_FAMILY_MASK) >> 24)
+
+#define PVR_MSR_RESET_VALUE(pvr) \
+ (pvr.pvr[11] & PVR11_MSR_RESET_VALUE_MASK)
+
+int cpu_has_pvr(void);
+void get_pvr(struct pvr_s *pvr);
+
+#endif /* _ASM_MICROBLAZE_PVR_H */
diff --git a/include/asm-microblaze/system.h b/include/asm-microblaze/system.h
new file mode 100644
index 0000000..f80f64c
--- /dev/null
+++ b/include/asm-microblaze/system.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SYSTEM_H
+#define _ASM_MICROBLAZE_SYSTEM_H
+
+#include <linux/autoconf.h>
+#include <asm/registers.h>
+#include <asm/setup.h>
+
+struct task_struct;
+struct thread_info;
+
+extern struct task_struct *_switch_to(struct thread_info *prev,
+ struct thread_info *next);
+
+#define switch_to(prev, next, last) \
+ do { \
+ (last) = _switch_to(task_thread_info(prev), \
+ task_thread_info(next)); \
+ } while (0)
+
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+
+#define local_irq_save(flags) \
+ do { \
+ asm volatile ("# local_irq_save \n\t" \
+ "msrclr %0, %1 \n\t" \
+ "nop \n\t" \
+ : "=r"(flags) \
+ : "i"(MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#define local_irq_disable() \
+ do { \
+ asm volatile ("# local_irq_disable \n\t" \
+ "msrclr r0, %0 \n\t" \
+ "nop \n\t" \
+ : \
+ : "i"(MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#define local_irq_enable() \
+ do { \
+ asm volatile ("# local_irq_enable \n\t" \
+ "msrset r0, %0 \n\t" \
+ "nop \n\t" \
+ : \
+ : "i"(MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */
+
+#define local_irq_save(flags) \
+ do { \
+ register unsigned tmp; \
+ asm volatile ("# local_irq_save \n\t" \
+ "mfs %0, rmsr \n\t" \
+ "andi %1, %0, %2 \n\t" \
+ "mts rmsr, %1 \n\t" \
+ "nop \n\t" \
+ : "=r"(flags), "=r" (tmp) \
+ : "i"(~MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#define local_irq_disable() \
+ do { \
+ register unsigned tmp; \
+ asm volatile ("# local_irq_disable \n\t" \
+ "mfs %0, rmsr \n\t" \
+ "andi %0, %0, %1 \n\t" \
+ "mts rmsr, %0 \n\t" \
+ "nop \n\t" \
+ : "=r"(tmp) \
+ : "i"(~MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#define local_irq_enable() \
+ do { \
+ register unsigned tmp; \
+ asm volatile ("# local_irq_enable \n\t" \
+ "mfs %0, rmsr \n\t" \
+ "ori %0, %0, %1 \n\t" \
+ "mts rmsr, %0 \n\t" \
+ "nop \n\t" \
+ : "=r"(tmp) \
+ : "i"(MSR_IE) \
+ : "memory"); \
+ } while (0)
+
+#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
+
+#define local_save_flags(flags) \
+ do { \
+ asm volatile ("# local_save_flags \n\t" \
+ "mfs %0, rmsr \n\t" \
+ "nop \n\t" \
+ : "=r"(flags) \
+ : \
+ : "memory"); \
+ } while (0)
+
+#define local_irq_restore(flags) \
+ do { \
+ asm volatile ("# local_irq_restore \n\t"\
+ "mts rmsr, %0 \n\t" \
+ "nop \n\t" \
+ : \
+ :"r"(flags) \
+ : "memory"); \
+ } while (0)
+
+static inline int irqs_disabled(void)
+{
+ unsigned long flags;
+
+ local_save_flags(flags);
+ return ((flags & MSR_IE) == 0);
+}
+
+#define smp_read_barrier_depends() do {} while (0)
+#define read_barrier_depends() do {} while (0)
+
+#define nop() asm volatile ("nop")
+#define mb() barrier()
+#define rmb() mb()
+#define wmb() mb()
+#define set_mb(var, value) do { var = value; mb(); } while (0)
+#define set_wmb(var, value) do { var = value; wmb(); } while (0)
+
+#define smp_mb() mb()
+#define smp_rmb() rmb()
+#define smp_wmb() wmb()
+
+void show_trace(struct task_struct *task, unsigned long *stack);
+void __bad_xchg(volatile void *ptr, int size);
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+ int size)
+{
+ unsigned long ret;
+ unsigned long flags;
+
+ switch (size) {
+ case 1:
+ local_irq_save(flags);
+ ret = *(volatile unsigned char *)ptr;
+ *(volatile unsigned char *)ptr = x;
+ local_irq_restore(flags);
+ break;
+
+ case 4:
+ local_irq_save(flags);
+ ret = *(volatile unsigned long *)ptr;
+ *(volatile unsigned long *)ptr = x;
+ local_irq_restore(flags);
+ break;
+ default:
+ __bad_xchg(ptr, size), ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+#define xchg(ptr,x) \
+ ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+extern void *cacheable_memcpy(void *, const void *, unsigned int);
+void free_init_pages(char *what, unsigned long begin, unsigned long end);
+void free_initmem(void);
+extern char *klimit;
+extern unsigned int memory_end;
+extern void ret_from_fork(void);
+
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *of_debugfs_root;
+#endif
+
+#endif /* _ASM_MICROBLAZE_SYSTEM_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/pgalloc.h | 14 +++++++++++
include/asm-microblaze/pgtable.h | 48 ++++++++++++++++++++++++++++++++++++++
2 files changed, 62 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/pgalloc.h
create mode 100644 include/asm-microblaze/pgtable.h
diff --git a/include/asm-microblaze/pgalloc.h b/include/asm-microblaze/pgalloc.h
new file mode 100644
index 0000000..2a4b354
--- /dev/null
+++ b/include/asm-microblaze/pgalloc.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_PGALLOC_H
+#define _ASM_MICROBLAZE_PGALLOC_H
+
+#define check_pgt_cache() do {} while (0)
+
+#endif /* _ASM_MICROBLAZE_PGALLOC_H */
diff --git a/include/asm-microblaze/pgtable.h b/include/asm-microblaze/pgtable.h
new file mode 100644
index 0000000..0354908
--- /dev/null
+++ b/include/asm-microblaze/pgtable.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_PGTABLE_H
+#define _ASM_MICROBLAZE_PGTABLE_H
+
+#define pgd_present(pgd) (1) /* pages are always present on NO_MM */
+#define pgd_none(pgd) (0)
+#define pgd_bad(pgd) (0)
+#define pgd_clear(pgdp)
+#define kern_addr_valid(addr) (1)
+#define pmd_offset(a, b) ((void *) 0)
+
+#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
+#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
+#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */
+#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */
+#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */
+
+#define __swp_type(x) (0)
+#define __swp_offset(x) (0)
+#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
+#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
+
+#ifndef __ASSEMBLY__
+static inline int pte_file(pte_t pte) { return 0; }
+#endif
+
+#define ZERO_PAGE(vaddr) ({ BUG(); NULL; })
+
+#define swapper_pg_dir ((pgd_t *) NULL)
+
+#define pgtable_cache_init() do {} while (0)
+
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
+ remap_pfn_range(vma, vaddr, pfn, size, prot)
+
+#define arch_enter_lazy_cpu_mode() do {} while (0)
+
+void paging_init(void);
+
+#endif /* _ASM_MICROBLAZE_PGTABLE_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/atomic.h | 106 ++++++++++++++++++++++++++++++++++++
include/asm-microblaze/bitops.h | 27 +++++++++
include/asm-microblaze/byteorder.h | 21 +++++++
3 files changed, 154 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/atomic.h
create mode 100644 include/asm-microblaze/bitops.h
create mode 100644 include/asm-microblaze/byteorder.h
diff --git a/include/asm-microblaze/atomic.h b/include/asm-microblaze/atomic.h
new file mode 100644
index 0000000..754688a
--- /dev/null
+++ b/include/asm-microblaze/atomic.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_ATOMIC_H
+#define _ASM_MICROBLAZE_ATOMIC_H
+
+#include <linux/compiler.h> /* likely */
+#include <asm/system.h> /* local_irq_XXX and friends */
+
+typedef struct { volatile int counter; } atomic_t;
+
+#define ATOMIC_INIT(i) { (i) }
+#define atomic_read(v) ((v)->counter)
+#define atomic_set(v, i) (((v)->counter) = (i))
+
+#define atomic_inc(v) (atomic_add_return(1, (v)))
+#define atomic_dec(v) (atomic_sub_return(1, (v)))
+
+#define atomic_add(i, v) (atomic_add_return(i, (v)))
+#define atomic_sub(i, v) (atomic_sub_return(i, (v)))
+
+#define atomic_inc_return(v) (atomic_add_return(1, (v)))
+#define atomic_dec_return(v) (atomic_sub_return(1, (v)))
+
+#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
+#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
+
+#define atomic_inc_not_zero(v) (atomic_add_unless((v), 1, 0))
+
+#define atomic_sub_and_test(i, v) (atomic_sub_return((i), (v)) == 0)
+
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+ int ret;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ ret = v->counter;
+ if (likely(ret == old))
+ v->counter = new;
+ local_irq_restore(flags);
+
+ return ret;
+}
+
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+
+ c = atomic_read(v);
+ while (c != u && (old = atomic_cmpxchg((v), c, c + a)) != c)
+ c = old;
+ return c != u;
+}
+
+static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ *addr &= ~mask;
+ local_irq_restore(flags);
+}
+
+/**
+ * atomic_add_return - add and return
+ * @i: integer value to add
+ * @v: pointer of type atomic_t
+ *
+ * Atomically adds @i to @v and returns @i + @v
+ */
+static inline int atomic_add_return(int i, atomic_t *v)
+{
+ unsigned long flags;
+ int val;
+
+ local_irq_save(flags);
+ val = v->counter;
+ v->counter = val += i;
+ local_irq_restore(flags);
+
+ return val;
+}
+
+static inline int atomic_sub_return(int i, atomic_t *v)
+{
+ return atomic_add_return(-i, v);
+}
+
+#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+/* Atomic operations are already serializing */
+#define smp_mb__before_atomic_dec() barrier()
+#define smp_mb__after_atomic_dec() barrier()
+#define smp_mb__before_atomic_inc() barrier()
+#define smp_mb__after_atomic_inc() barrier()
+
+#include <asm-generic/atomic.h>
+
+#endif /* _ASM_MICROBLAZE_ATOMIC_H */
diff --git a/include/asm-microblaze/bitops.h b/include/asm-microblaze/bitops.h
new file mode 100644
index 0000000..98ffb61
--- /dev/null
+++ b/include/asm-microblaze/bitops.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_BITOPS_H
+#define _ASM_MICROBLAZE_BITOPS_H
+
+/*
+ * Copyright 1992, Linus Torvalds.
+ */
+
+#include <linux/autoconf.h>
+#include <asm/byteorder.h> /* swab32 */
+#include <asm/system.h> /* save_flags */
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit() barrier()
+#define smp_mb__after_clear_bit() barrier()
+#include <asm-generic/bitops.h>
+
+#endif /* _ASM_MICROBLAZE_BITOPS_H */
diff --git a/include/asm-microblaze/byteorder.h b/include/asm-microblaze/byteorder.h
new file mode 100644
index 0000000..dad9204
--- /dev/null
+++ b/include/asm-microblaze/byteorder.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_BYTEORDER_H
+#define _ASM_MICROBLAZE_BYTEORDER_H
+
+#include <asm/types.h>
+
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#define __BYTEORDER_HAS_U64__
+#define __SWAB_64_THRU_32__
+#endif
+
+#include <linux/byteorder/big_endian.h>
+
+#endif /* _ASM_MICROBLAZE_BYTEORDER_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-generic/sockios.h | 23 +++++++++++++++++++++++
include/asm-generic/ucontext.h | 24 ++++++++++++++++++++++++
include/asm-microblaze/fcntl.h | 1 +
include/asm-microblaze/sockios.h | 23 +++++++++++++++++++++++
include/asm-microblaze/ucontext.h | 1 +
5 files changed, 72 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/sockios.h
create mode 100644 include/asm-generic/ucontext.h
create mode 100644 include/asm-microblaze/fcntl.h
create mode 100644 include/asm-microblaze/sockios.h
create mode 100644 include/asm-microblaze/ucontext.h
diff --git a/include/asm-generic/sockios.h b/include/asm-generic/sockios.h
new file mode 100644
index 0000000..9dc86e6
--- /dev/null
+++ b/include/asm-generic/sockios.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_GENERIC_SOCKIOS_H
+#define _ASM_GENERIC_SOCKIOS_H
+
+#include <asm-generic/ioctl.h>
+
+/* Socket-level I/O control calls. */
+#define FIOSETOWN 0x8901
+#define SIOCSPGRP 0x8902
+#define FIOGETOWN 0x8903
+#define SIOCGPGRP 0x8904
+#define SIOCATMARK 0x8905
+#define SIOCGSTAMP 0x8906 /* Get stamp (timeval) */
+#define SIOCGSTAMPNS 0x8907 /* Get stamp (timespec) */
+
+#endif /* _ASM_GENERIC_SOCKIOS_H */
diff --git a/include/asm-generic/ucontext.h b/include/asm-generic/ucontext.h
new file mode 100644
index 0000000..3e718c2
--- /dev/null
+++ b/include/asm-generic/ucontext.h
@@ -0,0 +1,24 @@
+/*
+ * include/asm-generic/ucontext.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#ifndef _ASM_GENERIC_UCONTEXT_H
+#define _ASM_GENERIC_UCONTEXT_H
+
+#include <asm/sigcontext.h>
+
+struct ucontext {
+ unsigned long uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+ struct sigcontext uc_mcontext;
+ sigset_t uc_sigmask; /* mask last for extensibility */
+};
+
+#endif /* _ASM_GENERIC_UCONTEXT_H */
diff --git a/include/asm-microblaze/fcntl.h b/include/asm-microblaze/fcntl.h
new file mode 100644
index 0000000..46ab12d
--- /dev/null
+++ b/include/asm-microblaze/fcntl.h
@@ -0,0 +1 @@
+#include <asm-generic/fcntl.h>
diff --git a/include/asm-microblaze/sockios.h b/include/asm-microblaze/sockios.h
new file mode 100644
index 0000000..41d1a0c
--- /dev/null
+++ b/include/asm-microblaze/sockios.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SOCKIOS_H
+#define _ASM_MICROBLAZE_SOCKIOS_H
+
+#include <asm/ioctl.h>
+
+/* Socket-level I/O control calls. */
+#define FIOSETOWN 0x8901
+#define SIOCSPGRP 0x8902
+#define FIOGETOWN 0x8903
+#define SIOCGPGRP 0x8904
+#define SIOCATMARK 0x8905
+#define SIOCGSTAMP 0x8906 /* Get stamp (timeval) */
+#define SIOCGSTAMPNS 0x8907 /* Get stamp (timespec) */
+
+#endif /* _ASM_MICROBLAZE_SOCKIOS_H */
diff --git a/include/asm-microblaze/ucontext.h b/include/asm-microblaze/ucontext.h
new file mode 100644
index 0000000..9bc07b9
--- /dev/null
+++ b/include/asm-microblaze/ucontext.h
@@ -0,0 +1 @@
+#include <asm-generic/ucontext.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/hardirq.h | 29 +++++++++++++++++++++++++++++
include/asm-microblaze/irq_regs.h | 1 +
2 files changed, 30 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/hardirq.h
create mode 100644 include/asm-microblaze/hw_irq.h
create mode 100644 include/asm-microblaze/irq_regs.h
diff --git a/include/asm-microblaze/hardirq.h b/include/asm-microblaze/hardirq.h
new file mode 100644
index 0000000..2aca035
--- /dev/null
+++ b/include/asm-microblaze/hardirq.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_HARDIRQ_H
+#define _ASM_MICROBLAZE_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <linux/irq.h>
+#include <asm/irq.h>
+#include <asm/current.h>
+#include <asm/ptrace.h>
+
+/* should be defined in each interrupt controller driver */
+extern unsigned int get_irq(struct pt_regs *regs);
+
+typedef struct {
+ unsigned int __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+void ack_bad_irq(unsigned int irq);
+
+#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
+
+#endif /* _ASM_MICROBLAZE_HARDIRQ_H */
diff --git a/include/asm-microblaze/hw_irq.h b/include/asm-microblaze/hw_irq.h
new file mode 100644
index 0000000..e69de29
diff --git a/include/asm-microblaze/irq_regs.h b/include/asm-microblaze/irq_regs.h
new file mode 100644
index 0000000..3dd9c0b
--- /dev/null
+++ b/include/asm-microblaze/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/stat.h | 73 +++++++++++++++++++++++++++++++++++++++
include/asm-microblaze/statfs.h | 1 +
2 files changed, 74 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/stat.h
create mode 100644 include/asm-microblaze/statfs.h
diff --git a/include/asm-microblaze/stat.h b/include/asm-microblaze/stat.h
new file mode 100644
index 0000000..9767b11
--- /dev/null
+++ b/include/asm-microblaze/stat.h
@@ -0,0 +1,73 @@
+/*
+ * Microblaze stat structure
+ *
+ * Copyright (C) 2001,02,03 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03 Miles Bader <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <[email protected]>
+ */
+
+#ifndef _ASM_MICROBLAZE_STAT_H
+#define _ASM_MICROBLAZE_STAT_H
+
+#include <asm/posix_types.h>
+
+struct stat {
+ unsigned int st_dev;
+ unsigned long st_ino;
+ unsigned int st_mode;
+ unsigned int st_nlink;
+ unsigned int st_uid;
+ unsigned int st_gid;
+ unsigned int st_rdev;
+ long st_size;
+ unsigned long st_blksize;
+ unsigned long st_blocks;
+ unsigned long st_atime;
+ unsigned long __unused1;
+ unsigned long st_mtime;
+ unsigned long __unused2;
+ unsigned long st_ctime;
+ unsigned long __unused3;
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+struct stat64 {
+ unsigned long long st_dev;
+ unsigned long __unused1;
+
+ unsigned long long st_ino;
+
+ unsigned int st_mode;
+ unsigned int st_nlink;
+
+ unsigned int st_uid;
+ unsigned int st_gid;
+
+ unsigned long long st_rdev;
+ unsigned long __unused3;
+
+ long long st_size;
+ unsigned long st_blksize;
+
+ unsigned long st_blocks; /* No. of 512-byte blocks allocated */
+ unsigned long __unused4; /* future possible st_blocks high bits */
+
+ unsigned long st_atime;
+ unsigned long st_atime_nsec;
+
+ unsigned long st_mtime;
+ unsigned long st_mtime_nsec;
+
+ unsigned long st_ctime;
+ unsigned long st_ctime_nsec;
+
+ unsigned long __unused8;
+};
+
+#endif /* _ASM_MICROBLAZE_STAT_H */
diff --git a/include/asm-microblaze/statfs.h b/include/asm-microblaze/statfs.h
new file mode 100644
index 0000000..0b91fe1
--- /dev/null
+++ b/include/asm-microblaze/statfs.h
@@ -0,0 +1 @@
+#include <asm-generic/statfs.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/current.h | 23 +++++++++++++++++++++++
include/asm-microblaze/entry.h | 28 ++++++++++++++++++++++++++++
include/asm-microblaze/mman.h | 25 +++++++++++++++++++++++++
include/asm-microblaze/registers.h | 24 ++++++++++++++++++++++++
include/asm-microblaze/sembuf.h | 34 ++++++++++++++++++++++++++++++++++
5 files changed, 134 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/current.h
create mode 100644 include/asm-microblaze/entry.h
create mode 100644 include/asm-microblaze/mman.h
create mode 100644 include/asm-microblaze/registers.h
create mode 100644 include/asm-microblaze/sembuf.h
diff --git a/include/asm-microblaze/current.h b/include/asm-microblaze/current.h
new file mode 100644
index 0000000..bc5ec59
--- /dev/null
+++ b/include/asm-microblaze/current.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_CURRENT_H
+#define _ASM_MICROBLAZE_CURRENT_H
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Dedicate r31 to keeping the current task pointer
+ */
+register struct task_struct *current asm("r31");
+
+#define get_current() current
+
+#endif
+
+#endif /* _ASM_MICROBLAZE_CURRENT_H */
diff --git a/include/asm-microblaze/entry.h b/include/asm-microblaze/entry.h
new file mode 100644
index 0000000..e4b5079
--- /dev/null
+++ b/include/asm-microblaze/entry.h
@@ -0,0 +1,28 @@
+/*
+ * Definitions used by low-level trap handlers
+ *
+ * Copyright (C) 2007 PetaLogix
+ * Copyright (C) 2007 John Williams <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_ENTRY_H
+#define _ASM_MICROBLAZE_ENTRY_H
+
+#include <asm/percpu.h>
+#include <asm/ptrace.h>
+
+/* These are per-cpu variables required in entry.S, among other
+ places */
+
+DECLARE_PER_CPU(unsigned int, KSP); /* Saved kernel stack pointer */
+DECLARE_PER_CPU(unsigned int, KM); /* Kernel/user mode */
+DECLARE_PER_CPU(unsigned int, ENTRY_SP); /* Saved SP on kernel entry */
+DECLARE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */
+DECLARE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */
+DECLARE_PER_CPU(unsigned int, SYSCALL_SAVE); /* Saved syscall number */
+
+#endif /* _ASM_MICROBLAZE_ENTRY_H */
diff --git a/include/asm-microblaze/mman.h b/include/asm-microblaze/mman.h
new file mode 100644
index 0000000..4914b13
--- /dev/null
+++ b/include/asm-microblaze/mman.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_MMAN_H
+#define _ASM_MICROBLAZE_MMAN_H
+
+#include <asm-generic/mman.h>
+
+#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
+#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
+#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
+#define MAP_LOCKED 0x2000 /* pages are locked */
+#define MAP_NORESERVE 0x4000 /* don't check for reservations */
+#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
+#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+
+#define MCL_CURRENT 1 /* lock all current mappings */
+#define MCL_FUTURE 2 /* lock all future mappings */
+
+#endif /* _ASM_MICROBLAZE_MMAN_H */
diff --git a/include/asm-microblaze/registers.h b/include/asm-microblaze/registers.h
new file mode 100644
index 0000000..1a98ba0
--- /dev/null
+++ b/include/asm-microblaze/registers.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_REGISTERS_H
+#define _ASM_MICROBLAZE_REGISTERS_H
+
+#define MSR_BE (1<<0)
+#define MSR_IE (1<<1)
+#define MSR_C (1<<2)
+#define MSR_BIP (1<<3)
+#define MSR_FSL (1<<4)
+#define MSR_ICE (1<<5)
+#define MSR_DZ (1<<6)
+#define MSR_DCE (1<<7)
+#define MSR_EE (1<<8)
+#define MSR_EIP (1<<9)
+#define MSR_CC (1<<31)
+
+#endif /* _ASM_MICROBLAZE_REGISTERS_H */
diff --git a/include/asm-microblaze/sembuf.h b/include/asm-microblaze/sembuf.h
new file mode 100644
index 0000000..b804ed7
--- /dev/null
+++ b/include/asm-microblaze/sembuf.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SEMBUF_H
+#define _ASM_MICROBLAZE_SEMBUF_H
+
+/*
+ * The semid64_ds structure for microblaze architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct semid64_ds {
+ struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
+ __kernel_time_t sem_otime; /* last semop time */
+ unsigned long __unused1;
+ __kernel_time_t sem_ctime; /* last change time */
+ unsigned long __unused2;
+ unsigned long sem_nsems; /* no. of semaphores in array */
+ unsigned long __unused3;
+ unsigned long __unused4;
+};
+
+
+#endif /* _ASM_MICROBLAZE_SEMBUF_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/sigcontext.h | 19 +++++++++++++++++++
include/asm-microblaze/siginfo.h | 15 +++++++++++++++
2 files changed, 34 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/sigcontext.h
create mode 100644 include/asm-microblaze/siginfo.h
diff --git a/include/asm-microblaze/sigcontext.h b/include/asm-microblaze/sigcontext.h
new file mode 100644
index 0000000..2819672
--- /dev/null
+++ b/include/asm-microblaze/sigcontext.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SIGCONTEXT_H
+#define _ASM_MICROBLAZE_SIGCONTEXT_H
+
+#include <asm/ptrace.h>
+
+struct sigcontext {
+ struct pt_regs regs;
+ unsigned long oldmask;
+};
+
+#endif /* _ASM_MICROBLAZE_SIGCONTEXT_H */
diff --git a/include/asm-microblaze/siginfo.h b/include/asm-microblaze/siginfo.h
new file mode 100644
index 0000000..f162911
--- /dev/null
+++ b/include/asm-microblaze/siginfo.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SIGINFO_H
+#define _ASM_MICROBLAZE_SIGINFO_H
+
+#include <linux/types.h>
+#include <asm-generic/siginfo.h>
+
+#endif /* _ASM_MICROBLAZE_SIGINFO_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/pci-bridge.h | 1 +
include/asm-microblaze/pci.h | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/pci-bridge.h
create mode 100644 include/asm-microblaze/pci.h
diff --git a/include/asm-microblaze/pci-bridge.h b/include/asm-microblaze/pci-bridge.h
new file mode 100644
index 0000000..7ad28f6
--- /dev/null
+++ b/include/asm-microblaze/pci-bridge.h
@@ -0,0 +1 @@
+#include <linux/pci.h>
diff --git a/include/asm-microblaze/pci.h b/include/asm-microblaze/pci.h
new file mode 100644
index 0000000..469e80e
--- /dev/null
+++ b/include/asm-microblaze/pci.h
@@ -0,0 +1 @@
+#include <asm/io.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/page.h | 117 ++++++++++++++++++++++++++++++++++++
include/asm-microblaze/segment.h | 39 ++++++++++++
include/asm-microblaze/unaligned.h | 19 ++++++
3 files changed, 175 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/page.h
create mode 100644 include/asm-microblaze/segment.h
create mode 100644 include/asm-microblaze/unaligned.h
diff --git a/include/asm-microblaze/page.h b/include/asm-microblaze/page.h
new file mode 100644
index 0000000..f7ed024
--- /dev/null
+++ b/include/asm-microblaze/page.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_PAGE_H
+#define _ASM_MICROBLAZE_PAGE_H
+
+#include <linux/autoconf.h>
+#include <linux/pfn.h>
+
+/* PAGE_SHIFT determines the page size */
+
+#define PAGE_SHIFT (12)
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#include <asm/setup.h>
+
+#ifndef __ASSEMBLY__
+
+#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
+#define free_user_page(page, addr) free_page(addr)
+
+#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg) \
+ memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long ste[64]; } pmd_t;
+typedef struct { pmd_t pue[1]; } pud_t;
+typedef struct { pud_t pge[1]; } pgd_t;
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x) ((x).pte)
+#define pmd_val(x) ((x).ste[0])
+#define pud_val(x) ((x).pue[0])
+#define pgd_val(x) ((x).pge[0])
+#define pgprot_val(x) ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) })
+#define __pmd(x) ((pmd_t) { (x) })
+#define __pgd(x) ((pgd_t) { (x) })
+#define __pgprot(x) ((pgprot_t) { (x) })
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
+
+extern unsigned int __page_offset;
+#define PAGE_OFFSET __page_offset
+
+/**
+ * Conversions for virtual address, physical address, pfn, and struct
+ * page are defined in the following files.
+ *
+ * virt -+
+ * | asm-microblaze/page.h
+ * phys -+
+ * | linux/pfn.h
+ * pfn -+
+ * | asm-generic/memory_model.h
+ * page -+
+ *
+ */
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#define __pa(vaddr) ((unsigned long) (vaddr))
+#define __va(paddr) ((void *) (paddr))
+
+#define phys_to_pfn(phys) (PFN_DOWN(phys))
+#define pfn_to_phys(pfn) (PFN_PHYS(pfn))
+
+#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
+#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
+
+#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
+#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
+
+#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
+#define page_to_bus(page) (page_to_phys(page))
+#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
+
+#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
+#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
+
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
+#endif /* _ASM_MICROBLAZE_PAGE_H */
diff --git a/include/asm-microblaze/segment.h b/include/asm-microblaze/segment.h
new file mode 100644
index 0000000..670a099
--- /dev/null
+++ b/include/asm-microblaze/segment.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SEGMENT_H
+#define _ASM_MICROBLAZE_SEGMENT_H
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+/*
+ * The fs value determines whether argument validity checking should be
+ * performed or not. If get_fs() == USER_DS, checking is performed, with
+ * get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons, these macros are grossly misnamed.
+ *
+ * For non-MMU arch like Microblaze, KERNEL_DS and USER_DS is equal.
+ */
+#define KERNEL_DS ((mm_segment_t){0})
+#define USER_DS KERNEL_DS
+
+#define get_ds() (KERNEL_DS)
+#define get_fs() (current_thread_info()->addr_limit)
+#define set_fs(x) \
+ do { current_thread_info()->addr_limit = (x); } while (0)
+
+#define segment_eq(a, b) ((a).seg == (b).seg)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_MICROBLAZE_SEGMENT_H */
diff --git a/include/asm-microblaze/unaligned.h b/include/asm-microblaze/unaligned.h
new file mode 100644
index 0000000..ad8bd76
--- /dev/null
+++ b/include/asm-microblaze/unaligned.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_UNALIGNED_H
+#define _ASM_MICROBLAZE_UNALIGNED_H
+
+#include <linux/unaligned/access_ok.h>
+#include <linux/unaligned/generic.h>
+
+#define get_unaligned __get_unaligned_be
+#define put_unaligned __put_unaligned_be
+
+#endif /* _ASM_MICROBLAZE_UNALIGNED_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-generic/socket.h | 66 +++++++++++++++++++++++++++++++++++++++
include/asm-microblaze/poll.h | 1 +
include/asm-microblaze/socket.h | 1 +
3 files changed, 68 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/socket.h
create mode 100644 include/asm-microblaze/poll.h
create mode 100644 include/asm-microblaze/socket.h
diff --git a/include/asm-generic/socket.h b/include/asm-generic/socket.h
new file mode 100644
index 0000000..3f3430e
--- /dev/null
+++ b/include/asm-generic/socket.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_GENERIC_SOCKET_H
+#define _ASM_GENERIC_SOCKET_H
+
+#include <asm/sockios.h>
+
+/* For setsockoptions(2) */
+#define SOL_SOCKET 1
+
+#define SO_DEBUG 1
+#define SO_REUSEADDR 2
+#define SO_TYPE 3
+#define SO_ERROR 4
+#define SO_DONTROUTE 5
+#define SO_BROADCAST 6
+#define SO_SNDBUF 7
+#define SO_RCVBUF 8
+#define SO_SNDBUFFORCE 32
+#define SO_RCVBUFFORCE 33
+#define SO_KEEPALIVE 9
+#define SO_OOBINLINE 10
+#define SO_NO_CHECK 11
+#define SO_PRIORITY 12
+#define SO_LINGER 13
+#define SO_BSDCOMPAT 14
+/* To add :#define SO_REUSEPORT 15 */
+#define SO_PASSCRED 16
+#define SO_PEERCRED 17
+#define SO_RCVLOWAT 18
+#define SO_SNDLOWAT 19
+#define SO_RCVTIMEO 20
+#define SO_SNDTIMEO 21
+
+/* Security levels - as per NRL IPv6 - don't actually do anything */
+#define SO_SECURITY_AUTHENTICATION 22
+#define SO_SECURITY_ENCRYPTION_TRANSPORT 23
+#define SO_SECURITY_ENCRYPTION_NETWORK 24
+
+#define SO_BINDTODEVICE 25
+
+/* Socket filtering */
+#define SO_ATTACH_FILTER 26
+#define SO_DETACH_FILTER 27
+
+#define SO_PEERNAME 28
+#define SO_TIMESTAMP 29
+#define SCM_TIMESTAMP SO_TIMESTAMP
+
+#define SO_ACCEPTCONN 30
+
+#define SO_PEERSEC 31
+#define SO_PASSSEC 34
+
+#define SO_TIMESTAMPNS 35
+#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
+
+#define SO_MARK 36
+
+#endif /* _ASM_GENERIC_SOCKET_H */
diff --git a/include/asm-microblaze/poll.h b/include/asm-microblaze/poll.h
new file mode 100644
index 0000000..c98509d
--- /dev/null
+++ b/include/asm-microblaze/poll.h
@@ -0,0 +1 @@
+#include <asm-generic/poll.h>
diff --git a/include/asm-microblaze/socket.h b/include/asm-microblaze/socket.h
new file mode 100644
index 0000000..6b71384
--- /dev/null
+++ b/include/asm-microblaze/socket.h
@@ -0,0 +1 @@
+#include <asm-generic/socket.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-generic/termbits.h | 200 +++++++++++++++++++++++++++++++++++++
include/asm-microblaze/termbits.h | 1 +
include/asm-microblaze/termios.h | 84 ++++++++++++++++
3 files changed, 285 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/termbits.h
create mode 100644 include/asm-microblaze/termbits.h
create mode 100644 include/asm-microblaze/termios.h
diff --git a/include/asm-generic/termbits.h b/include/asm-generic/termbits.h
new file mode 100644
index 0000000..740b044
--- /dev/null
+++ b/include/asm-generic/termbits.h
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_GENERIC_TERMBITS_H
+#define _ASM_GENERIC_TERMBITS_H
+
+#include <linux/posix_types.h>
+
+typedef unsigned char cc_t;
+typedef unsigned int speed_t;
+typedef unsigned int tcflag_t;
+
+#define NCCS 19
+struct termios {
+ tcflag_t c_iflag; /* input mode flags */
+ tcflag_t c_oflag; /* output mode flags */
+ tcflag_t c_cflag; /* control mode flags */
+ tcflag_t c_lflag; /* local mode flags */
+ cc_t c_line; /* line discipline */
+ cc_t c_cc[NCCS]; /* control characters */
+};
+
+struct ktermios {
+ tcflag_t c_iflag; /* input mode flags */
+ tcflag_t c_oflag; /* output mode flags */
+ tcflag_t c_cflag; /* control mode flags */
+ tcflag_t c_lflag; /* local mode flags */
+ cc_t c_line; /* line discipline */
+ cc_t c_cc[NCCS]; /* control characters */
+ speed_t c_ispeed; /* input speed */
+ speed_t c_ospeed; /* output speed */
+};
+
+/* c_cc characters */
+
+#define VINTR 0
+#define VQUIT 1
+#define VERASE 2
+#define VKILL 3
+#define VEOF 4
+#define VTIME 5
+#define VMIN 6
+#define VSWTC 7
+#define VSTART 8
+#define VSTOP 9
+#define VSUSP 10
+#define VEOL 11
+#define VREPRINT 12
+#define VDISCARD 13
+#define VWERASE 14
+#define VLNEXT 15
+#define VEOL2 16
+
+/* c_iflag bits */
+
+#define IGNBRK 0000001
+#define BRKINT 0000002
+#define IGNPAR 0000004
+#define PARMRK 0000010
+#define INPCK 0000020
+#define ISTRIP 0000040
+#define INLCR 0000100
+#define IGNCR 0000200
+#define ICRNL 0000400
+#define IUCLC 0001000
+#define IXON 0002000
+#define IXANY 0004000
+#define IXOFF 0010000
+#define IMAXBEL 0020000
+#define IUTF8 0040000
+
+/* c_oflag bits */
+
+#define OPOST 0000001
+#define OLCUC 0000002
+#define ONLCR 0000004
+#define OCRNL 0000010
+#define ONOCR 0000020
+#define ONLRET 0000040
+#define OFILL 0000100
+#define OFDEL 0000200
+#define NLDLY 0000400
+#define NL0 0000000
+#define NL1 0000400
+#define CRDLY 0003000
+#define CR0 0000000
+#define CR1 0001000
+#define CR2 0002000
+#define CR3 0003000
+#define TABDLY 0014000
+#define TAB0 0000000
+#define TAB1 0004000
+#define TAB2 0010000
+#define TAB3 0014000
+#define XTABS 0014000
+#define BSDLY 0020000
+#define BS0 0000000
+#define BS1 0020000
+#define VTDLY 0040000
+#define VT0 0000000
+#define VT1 0040000
+#define FFDLY 0100000
+#define FF0 0000000
+#define FF1 0100000
+
+/* c_cflag bit meaning */
+
+#define CBAUD 0010017
+#define B0 0000000 /* hang up */
+#define B50 0000001
+#define B75 0000002
+#define B110 0000003
+#define B134 0000004
+#define B150 0000005
+#define B200 0000006
+#define B300 0000007
+#define B600 0000010
+#define B1200 0000011
+#define B1800 0000012
+#define B2400 0000013
+#define B4800 0000014
+#define B9600 0000015
+#define B19200 0000016
+#define B38400 0000017
+#define EXTA B19200
+#define EXTB B38400
+#define CSIZE 0000060
+#define CS5 0000000
+#define CS6 0000020
+#define CS7 0000040
+#define CS8 0000060
+#define CSTOPB 0000100
+#define CREAD 0000200
+#define PARENB 0000400
+#define PARODD 0001000
+#define HUPCL 0002000
+#define CLOCAL 0004000
+#define CBAUDEX 0010000
+#define B57600 0010001
+#define B115200 0010002
+#define B230400 0010003
+#define B460800 0010004
+#define B500000 0010005
+#define B576000 0010006
+#define B921600 0010007
+#define B1000000 0010010
+#define B1152000 0010011
+#define B1500000 0010012
+#define B2000000 0010013
+#define B2500000 0010014
+#define B3000000 0010015
+#define B3500000 0010016
+#define B4000000 0010017
+#define CIBAUD 002003600000 /* input baud rate (not used) */
+#define CMSPAR 010000000000 /* mark or space (stick) parity */
+#define CRTSCTS 020000000000 /* flow control */
+
+/* c_lflag bits */
+
+#define ISIG 0000001
+#define ICANON 0000002
+#define XCASE 0000004
+#define ECHO 0000010
+#define ECHOE 0000020
+#define ECHOK 0000040
+#define ECHONL 0000100
+#define NOFLSH 0000200
+#define TOSTOP 0000400
+#define ECHOCTL 0001000
+#define ECHOPRT 0002000
+#define ECHOKE 0004000
+#define FLUSHO 0010000
+#define PENDIN 0040000
+#define IEXTEN 0100000
+
+/* tcflow() and TCXONC use these */
+
+#define TCOOFF 0
+#define TCOON 1
+#define TCIOFF 2
+#define TCION 3
+
+/* tcflush() and TCFLSH use these */
+
+#define TCIFLUSH 0
+#define TCOFLUSH 1
+#define TCIOFLUSH 2
+
+/* tcsetattr uses these */
+
+#define TCSANOW 0
+#define TCSADRAIN 1
+#define TCSAFLUSH 2
+
+#endif /* _ASM_GENERIC_TERMBITS_H */
diff --git a/include/asm-microblaze/termbits.h b/include/asm-microblaze/termbits.h
new file mode 100644
index 0000000..3935b10
--- /dev/null
+++ b/include/asm-microblaze/termbits.h
@@ -0,0 +1 @@
+#include <asm-generic/termbits.h>
diff --git a/include/asm-microblaze/termios.h b/include/asm-microblaze/termios.h
new file mode 100644
index 0000000..dd72e5d
--- /dev/null
+++ b/include/asm-microblaze/termios.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_TERMIOS_H
+#define _ASM_MICROBLAZE_TERMIOS_H
+
+#include <linux/string.h>
+#include <asm/termbits.h>
+#include <asm/ioctls.h>
+
+struct winsize {
+ unsigned short ws_row;
+ unsigned short ws_col;
+ unsigned short ws_xpixel;
+ unsigned short ws_ypixel;
+};
+
+#define NCC 8
+struct termio {
+ unsigned short c_iflag; /* input mode flags */
+ unsigned short c_oflag; /* output mode flags */
+ unsigned short c_cflag; /* control mode flags */
+ unsigned short c_lflag; /* local mode flags */
+ unsigned char c_line; /* line discipline */
+ unsigned char c_cc[NCC]; /* control characters */
+};
+
+#ifdef __KERNEL__
+/* intr=^C quit=^| erase=del kill=^U
+ eof=^D vtime=\0 vmin=\1 sxtc=\0
+ start=^Q stop=^S susp=^Z eol=\0
+ reprint=^R discard=^U werase=^W lnext=^V
+ eol2=\0
+*/
+#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
+#endif
+
+/* Modem lines */
+
+#define TIOCM_LE 0x001
+#define TIOCM_DTR 0x002
+#define TIOCM_RTS 0x004
+#define TIOCM_ST 0x008
+#define TIOCM_SR 0x010
+#define TIOCM_CTS 0x020
+#define TIOCM_CAR 0x040
+#define TIOCM_RNG 0x080
+#define TIOCM_DSR 0x100
+#define TIOCM_CD TIOCM_CAR
+#define TIOCM_RI TIOCM_RNG
+#define TIOCM_OUT1 0x2000
+#define TIOCM_OUT2 0x4000
+#define TIOCM_LOOP 0x8000
+
+/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+
+/* Line disciplines */
+
+#define N_TTY 0
+#define N_SLIP 1
+#define N_MOUSE 2
+#define N_PPP 3
+#define N_STRIP 4
+#define N_AX25 5
+#define N_X25 6 /* X.25 async */
+#define N_6PACK 7
+#define N_MASC 8 /* Reserved for Mobitex module <[email protected]> */
+#define N_R3964 9 /* Reserved for Simatic R3964 module */
+#define N_PROFIBUS_FDL 10 /* Reserved for Profibus <[email protected]> */
+#define N_IRDA 11 /* Linux IR - http://irda.sourceforge.net/ */
+#define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards
+ about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */
+#define N_SYNC_PPP 14
+#define N_HCI 15 /* Bluetooth HCI UART */
+
+#include <asm-generic/termios.h>
+
+#endif /* _ASM_MICROBLAZE_TERMIOS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/sys_microblaze.c | 283 +++++++++++++++++++++++++++++++
1 files changed, 283 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/sys_microblaze.c
diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c
new file mode 100644
index 0000000..4ff008b
--- /dev/null
+++ b/arch/microblaze/kernel/sys_microblaze.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2007 PetaLogix
+ * John Williams <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ * Yasushi SHOJI <[email protected]>
+ * Tetsuya OHKAWA <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/syscalls.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/sys.h>
+#include <linux/ipc.h>
+#include <linux/utsname.h>
+#include <linux/file.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+
+#include <asm/uaccess.h>
+#include <linux/ipc.h>
+#include <asm/semaphore.h>
+#include <asm/unistd.h>
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+int
+sys_ipc(uint call, int first, int second, int third, void *ptr, long fifth)
+{
+ int version, ret;
+
+ version = call >> 16; /* hack for backward compatibility */
+ call &= 0xffff;
+
+ ret = -EINVAL;
+ switch (call) {
+ case SEMOP:
+ ret = sys_semop(first, (struct sembuf *)ptr, second);
+ break;
+ case SEMGET:
+ ret = sys_semget(first, second, third);
+ break;
+ case SEMCTL:
+ {
+ union semun fourth;
+
+ if (!ptr)
+ break;
+ if ((ret = access_ok(VERIFY_READ, ptr,
+ sizeof(long)) ? 0 : -EFAULT)
+ || (ret = get_user(fourth.__pad, (void **)ptr)))
+ break;
+ ret = sys_semctl(first, second, third, fourth);
+ break;
+ }
+ case MSGSND:
+ ret = sys_msgsnd(first, (struct msgbuf *) ptr, second, third);
+ break;
+ case MSGRCV:
+ switch (version) {
+ case 0: {
+ struct ipc_kludge tmp;
+
+ if (!ptr)
+ break;
+ if ((ret = access_ok(VERIFY_READ, ptr,
+ sizeof(tmp)) ? 0 : -EFAULT)
+ || (ret = copy_from_user(&tmp,
+ (struct ipc_kludge *) ptr,
+ sizeof(tmp))))
+ break;
+ ret = sys_msgrcv(first, tmp.msgp, second, tmp.msgtyp,
+ third);
+ break;
+ }
+ default:
+ ret = sys_msgrcv(first, (struct msgbuf *) ptr,
+ second, fifth, third);
+ break;
+ }
+ break;
+ case MSGGET:
+ ret = sys_msgget((key_t) first, second);
+ break;
+ case MSGCTL:
+ ret = sys_msgctl(first, second, (struct msqid_ds *) ptr);
+ break;
+ case SHMAT:
+ switch (version) {
+ default: {
+ ulong raddr;
+
+ if ((ret = access_ok(VERIFY_WRITE, (ulong *) third,
+ sizeof(ulong)) ? 0 : -EFAULT))
+ break;
+ ret = do_shmat(first, (char *) ptr, second, &raddr);
+ if (ret)
+ break;
+ ret = put_user(raddr, (ulong *) third);
+ break;
+ }
+ case 1: /* iBCS2 emulator entry point */
+ if (!segment_eq(get_fs(), get_ds()))
+ break;
+ ret = do_shmat(first, (char *) ptr, second,
+ (ulong *) third);
+ break;
+ }
+ break;
+ case SHMDT:
+ ret = sys_shmdt((char *)ptr);
+ break;
+ case SHMGET:
+ ret = sys_shmget(first, second, third);
+ break;
+ case SHMCTL:
+ ret = sys_shmctl(first, second, (struct shmid_ds *) ptr);
+ break;
+ }
+
+ return ret;
+}
+
+long execve(const char *filename, char **argv, char **envp)
+{
+ struct pt_regs regs;
+ int ret;
+
+ memset(®s, 0, sizeof(struct pt_regs));
+ local_save_flags(regs.msr);
+ ret = do_execve((char *)filename, (char __user * __user *)argv,
+ (char __user * __user *)envp, ®s);
+
+ if (ret < 0)
+ goto out;
+
+ /*
+ * Save argc to the register structure for userspace.
+ */
+ regs.r5 = ret; /* FIXME */
+
+ /*
+ * We were successful. We won't be returning to our caller, but
+ * instead to user space by manipulating the kernel stack.
+ */
+ asm volatile ("addk r5, r0, %0 \n\t"
+ "addk r6, r0, %1 \n\t"
+ /* copy regs to top of stack */
+ "brlid r15, memmove \n\t"
+ "addik r7, r0, %2 \n\t"
+ "brid ret_to_user \n\t"
+ /* reposition stack pointer */
+ "addk r1, r0, r3 \n\t"
+ :
+ : "r" (task_pt_regs(current)),
+ "r" (®s),
+ "i" (sizeof(regs))
+ : "r1", "r3", "r5", "r6", "r7", "r15", "memory");
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL(execve);
+
+asmlinkage int sys_vfork(struct pt_regs *regs)
+{
+ return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->r1,
+ regs, 0, NULL, NULL);
+}
+
+asmlinkage int sys_clone(int flags, unsigned long stack, struct pt_regs *regs)
+{
+ if (!stack)
+ stack = regs->r1;
+ return do_fork(flags, stack, regs, 0, NULL, NULL);
+}
+
+asmlinkage int sys_execve(char __user *filenamei, char __user * __user *argv,
+ char __user * __user *envp, struct pt_regs *regs)
+{
+ int error;
+ char *filename;
+
+ filename = getname(filenamei);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ goto out;
+ error = do_execve(filename, argv, envp, regs);
+ putname(filename);
+out:
+ return error;
+}
+
+static inline unsigned long
+do_mmap2(unsigned long addr, size_t len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ struct file *file = NULL;
+ int ret = -EBADF;
+
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ if (!(flags & MAP_ANONYMOUS))
+ if (!(file = fget(fd))) {
+ printk(KERN_INFO "no fd in mmap\r\n");
+ goto out;
+ }
+
+ down_write(¤t->mm->mmap_sem);
+ ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+ up_write(¤t->mm->mmap_sem);
+ if (file)
+ fput(file);
+out:
+ return ret;
+}
+
+unsigned long sys_mmap2(unsigned long addr, size_t len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ return do_mmap2(addr, len, prot, flags, fd, pgoff);
+}
+
+unsigned long sys_mmap(unsigned long addr, size_t len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, off_t offset)
+{
+ int err = -EINVAL;
+
+ if (offset & ~PAGE_MASK) {
+ printk(KERN_INFO "no pagemask in mmap\r\n");
+ goto out;
+ }
+
+ err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+out:
+ return err;
+}
+
+int sys_uname(struct old_utsname *name)
+{
+ int err = -EFAULT;
+
+ down_read(&uts_sem);
+ if (name && !copy_to_user(name, utsname(), sizeof(*name)))
+ err = 0;
+ up_read(&uts_sem);
+ return err;
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+ register const char *__a __asm__("r5") = filename;
+ register const void *__b __asm__("r6") = argv;
+ register const void *__c __asm__("r7") = envp;
+ register unsigned long __syscall __asm__("r12") = __NR_execve;
+ register unsigned long __ret __asm__("r3");
+ __asm__ __volatile__ ("brki r14, 0x8"
+ : "=r" (__ret), "=r" (__syscall)
+ : "1" (__syscall), "r" (__a), "r" (__b), "r" (__c)
+ : "r4", "r8", "r9",
+ "r10", "r11", "r14", "cc", "memory");
+ return __ret;
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/syscall_table.S | 330 +++++++++++++++++++++++++++
include/asm-microblaze/unistd.h | 390 ++++++++++++++++++++++++++++++++
2 files changed, 720 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/syscall_table.S
create mode 100644 include/asm-microblaze/unistd.h
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
new file mode 100644
index 0000000..0ffa19e
--- /dev/null
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -0,0 +1,330 @@
+ENTRY(sys_call_table)
+ .long sys_restart_syscall /* 0 - old "setup()" system call,
+ * used for restarting */
+ .long sys_exit
+ .long sys_ni_syscall /* was fork */
+ .long sys_read
+ .long sys_write
+ .long sys_open /* 5 */
+ .long sys_close
+ .long sys_waitpid
+ .long sys_creat
+ .long sys_link
+ .long sys_unlink /* 10 */
+ .long sys_execve_wrapper
+ .long sys_chdir
+ .long sys_time
+ .long sys_mknod
+ .long sys_chmod /* 15 */
+ .long sys_lchown
+ .long sys_ni_syscall /* old break syscall holder */
+ .long sys_ni_syscall /* stat */
+ .long sys_lseek
+ .long sys_getpid /* 20 */
+ .long sys_mount
+ .long sys_oldumount
+ .long sys_setuid
+ .long sys_getuid
+ .long sys_stime /* 25 */
+ .long sys_ptrace
+ .long sys_alarm
+ .long sys_ni_syscall /* fstat */
+ .long sys_pause
+ .long sys_utime /* 30 */
+ .long sys_ni_syscall /* old stty syscall holder */
+ .long sys_ni_syscall /* old gtty syscall holder */
+ .long sys_access
+ .long sys_nice
+ .long sys_ni_syscall /* 35 - old ftime syscall holder */
+ .long sys_sync
+ .long sys_kill
+ .long sys_rename
+ .long sys_mkdir
+ .long sys_rmdir /* 40 */
+ .long sys_dup
+ .long sys_pipe
+ .long sys_times
+ .long sys_ni_syscall /* old prof syscall holder */
+ .long sys_brk /* 45 */
+ .long sys_setgid
+ .long sys_getgid
+ .long sys_signal
+ .long sys_geteuid
+ .long sys_getegid /* 50 */
+ .long sys_acct
+ .long sys_umount /* recycled never used phys() */
+ .long sys_ni_syscall /* old lock syscall holder */
+ .long sys_ioctl
+ .long sys_fcntl /* 55 */
+ .long sys_ni_syscall /* old mpx syscall holder */
+ .long sys_setpgid
+ .long sys_ni_syscall /* old ulimit syscall holder */
+ .long sys_ni_syscall /* olduname */
+ .long sys_umask /* 60 */
+ .long sys_chroot
+ .long sys_ustat
+ .long sys_dup2
+ .long sys_getppid
+ .long sys_getpgrp /* 65 */
+ .long sys_setsid
+ .long sys_sigaction
+ .long sys_sgetmask
+ .long sys_ssetmask
+ .long sys_setreuid /* 70 */
+ .long sys_setregid
+ .long sys_sigsuspend_wrapper
+ .long sys_sigpending
+ .long sys_sethostname
+ .long sys_setrlimit /* 75 */
+ .long sys_ni_syscall /* old_getrlimit */
+ .long sys_getrusage
+ .long sys_gettimeofday
+ .long sys_settimeofday
+ .long sys_getgroups /* 80 */
+ .long sys_setgroups
+ .long sys_ni_syscall /* old_select */
+ .long sys_symlink
+ .long sys_ni_syscall /* lstat */
+ .long sys_readlink /* 85 */
+ .long sys_uselib
+ .long sys_swapon
+ .long sys_reboot
+ .long sys_ni_syscall /* old_readdir */
+ .long sys_mmap /* 90 */ /* old_mmap */
+ .long sys_munmap
+ .long sys_truncate
+ .long sys_ftruncate
+ .long sys_fchmod
+ .long sys_fchown /* 95 */
+ .long sys_getpriority
+ .long sys_setpriority
+ .long sys_ni_syscall /* old profil syscall holder */
+ .long sys_statfs
+ .long sys_fstatfs /* 100 */
+ .long sys_ni_syscall /* ioperm */
+ .long sys_socketcall
+ .long sys_syslog /* operation with system console */
+ .long sys_setitimer
+ .long sys_getitimer /* 105 */
+ .long sys_newstat
+ .long sys_newlstat
+ .long sys_newfstat
+ .long sys_ni_syscall /* uname */
+ .long sys_ni_syscall /* 110 */ /* iopl */
+ .long sys_vhangup
+ .long sys_ni_syscall /* old "idle" system call */
+ .long sys_ni_syscall /* old sys_vm86old */
+ .long sys_wait4
+ .long sys_swapoff /* 115 */
+ .long sys_sysinfo
+ .long sys_ipc
+ .long sys_fsync
+ .long sys_sigreturn_wrapper
+ .long sys_clone_wrapper /* 120 */
+ .long sys_setdomainname
+ .long sys_newuname
+ .long sys_ni_syscall /* modify_ldt */
+ .long sys_adjtimex
+ .long sys_ni_syscall /* 125: sys_mprotect */
+ .long sys_sigprocmask
+ .long sys_ni_syscall /* old "create_module" */
+ .long sys_init_module
+ .long sys_delete_module
+ .long sys_ni_syscall /* 130: old "get_kernel_syms" */
+ .long sys_quotactl
+ .long sys_getpgid
+ .long sys_fchdir
+ .long sys_bdflush
+ .long sys_sysfs /* 135 */
+ .long sys_personality
+ .long sys_ni_syscall /* reserved for afs_syscall */
+ .long sys_setfsuid
+ .long sys_setfsgid
+ .long sys_llseek /* 140 */
+ .long sys_getdents
+ .long sys_select
+ .long sys_flock
+ .long sys_ni_syscall /* sys_msync */
+ .long sys_readv /* 145 */
+ .long sys_writev
+ .long sys_getsid
+ .long sys_fdatasync
+ .long sys_sysctl
+ .long sys_ni_syscall /* 150: sys_mlock */
+ .long sys_ni_syscall /* sys_munlock */
+ .long sys_ni_syscall /* sys_mlockall */
+ .long sys_ni_syscall /* sys_munlockall */
+ .long sys_sched_setparam
+ .long sys_sched_getparam /* 155 */
+ .long sys_sched_setscheduler
+ .long sys_sched_getscheduler
+ .long sys_sched_yield
+ .long sys_sched_get_priority_max
+ .long sys_sched_get_priority_min /* 160 */
+ .long sys_sched_rr_get_interval
+ .long sys_nanosleep
+ .long sys_ni_syscall /* sys_mremap */
+ .long sys_setresuid
+ .long sys_getresuid /* 165 */
+ .long sys_ni_syscall /* sys_vm86 */
+ .long sys_ni_syscall /* Old sys_query_module */
+ .long sys_poll
+ .long sys_nfsservctl
+ .long sys_setresgid /* 170 */
+ .long sys_getresgid
+ .long sys_prctl
+ .long sys_rt_sigreturn_wrapper
+ .long sys_rt_sigaction
+ .long sys_rt_sigprocmask /* 175 */
+ .long sys_rt_sigpending
+ .long sys_rt_sigtimedwait
+ .long sys_rt_sigqueueinfo
+ .long sys_rt_sigsuspend_wrapper
+ .long sys_pread64 /* 180 */
+ .long sys_pwrite64
+ .long sys_chown
+ .long sys_getcwd
+ .long sys_capget
+ .long sys_capset /* 185 */
+ .long sys_ni_syscall /* sigaltstack */
+ .long sys_sendfile
+ .long sys_ni_syscall /* reserved for streams1 */
+ .long sys_ni_syscall /* reserved for streams2 */
+ .long sys_vfork_wrapper /* 190 */
+ .long sys_getrlimit
+ .long sys_mmap2 /* mmap2 */
+ .long sys_truncate64
+ .long sys_ftruncate64
+ .long sys_stat64 /* 195 */
+ .long sys_lstat64
+ .long sys_fstat64
+ .long sys_lchown
+ .long sys_getuid
+ .long sys_getgid /* 200 */
+ .long sys_geteuid
+ .long sys_getegid
+ .long sys_setreuid
+ .long sys_setregid
+ .long sys_getgroups /* 205 */
+ .long sys_setgroups
+ .long sys_fchown
+ .long sys_setresuid
+ .long sys_getresuid
+ .long sys_setresgid /* 210 */
+ .long sys_getresgid
+ .long sys_chown
+ .long sys_setuid
+ .long sys_setgid
+ .long sys_setfsuid /* 215 */
+ .long sys_setfsgid
+ .long sys_pivot_root
+ .long sys_ni_syscall /* sys_mincore */
+ .long sys_ni_syscall /* sys_madvise */
+ .long sys_getdents64 /* 220 */
+ .long sys_fcntl64
+ .long sys_ni_syscall /* reserved for TUX */
+ .long sys_ni_syscall
+ .long sys_gettid
+ .long sys_readahead /* 225 */
+ .long sys_setxattr
+ .long sys_lsetxattr
+ .long sys_fsetxattr
+ .long sys_getxattr
+ .long sys_lgetxattr /* 230 */
+ .long sys_fgetxattr
+ .long sys_listxattr
+ .long sys_llistxattr
+ .long sys_flistxattr
+ .long sys_removexattr /* 235 */
+ .long sys_lremovexattr
+ .long sys_fremovexattr
+ .long sys_tkill
+ .long sys_sendfile64
+ .long sys_futex /* 240 */
+ .long sys_sched_setaffinity
+ .long sys_sched_getaffinity
+ .long sys_ni_syscall /* set_thread_area */
+ .long sys_ni_syscall /* get_thread_area */
+ .long sys_io_setup /* 245 */
+ .long sys_io_destroy
+ .long sys_io_getevents
+ .long sys_io_submit
+ .long sys_io_cancel
+ .long sys_fadvise64 /* 250 */
+ .long sys_ni_syscall
+ .long sys_exit_group
+ .long sys_lookup_dcookie
+ .long sys_epoll_create
+ .long sys_epoll_ctl /* 255 */
+ .long sys_epoll_wait
+ .long sys_ni_syscall /* sys_remap_file_pages */
+ .long sys_set_tid_address
+ .long sys_timer_create
+ .long sys_timer_settime /* 260 */
+ .long sys_timer_gettime
+ .long sys_timer_getoverrun
+ .long sys_timer_delete
+ .long sys_clock_settime
+ .long sys_clock_gettime /* 265 */
+ .long sys_clock_getres
+ .long sys_clock_nanosleep
+ .long sys_statfs64
+ .long sys_fstatfs64
+ .long sys_tgkill /* 270 */
+ .long sys_utimes
+ .long sys_fadvise64_64
+ .long sys_ni_syscall /* sys_vserver */
+ .long sys_mbind
+ .long sys_get_mempolicy
+ .long sys_set_mempolicy
+ .long sys_mq_open
+ .long sys_mq_unlink
+ .long sys_mq_timedsend
+ .long sys_mq_timedreceive /* 280 */
+ .long sys_mq_notify
+ .long sys_mq_getsetattr
+ .long sys_kexec_load
+ .long sys_waitid
+ .long sys_ni_syscall /* 285 */ /* available */
+ .long sys_add_key
+ .long sys_request_key
+ .long sys_keyctl
+ .long sys_ioprio_set
+ .long sys_ioprio_get /* 290 */
+ .long sys_inotify_init
+ .long sys_inotify_add_watch
+ .long sys_inotify_rm_watch
+ .long sys_ni_syscall /* sys_migrate_pages */
+ .long sys_ni_syscall /* 295 */ /* sys_openat */
+ .long sys_ni_syscall /* sys_mkdirat */
+ .long sys_ni_syscall /* sys_mknodat */
+ .long sys_ni_syscall /* sys_fchownat */
+ .long sys_ni_syscall /* sys_futimesat */
+ .long sys_ni_syscall /* 300 */ /* sys_fstatat64 */
+ .long sys_ni_syscall /* sys_unlinkat */
+ .long sys_ni_syscall /* sys_renameat */
+ .long sys_ni_syscall /* sys_linkat */
+ .long sys_ni_syscall /* sys_symlinkat */
+ .long sys_ni_syscall /* 305 */ /* sys_readlinkat */
+ .long sys_ni_syscall /* sys_fchmodat */
+ .long sys_ni_syscall /* sys_faccessat */
+ .long sys_ni_syscall /* pselect6 */
+ .long sys_ni_syscall /* ppoll */
+ .long sys_ni_syscall /* 310 */ /* sys_unshare */
+ .long sys_ni_syscall /* sys_set_robust_list */
+ .long sys_ni_syscall /* sys_get_robust_list */
+ .long sys_ni_syscall /* sys_splice */
+ .long sys_ni_syscall /* sys_sync_file_range */
+ .long sys_ni_syscall /* 315 */ /* sys_tee */
+ .long sys_ni_syscall /* sys_vmsplice */
+ .long sys_move_pages
+ .long sys_getcpu
+ .long sys_epoll_pwait
+ .long sys_utimensat /* 320 */
+ .long sys_signalfd
+ .long sys_timerfd_create
+ .long sys_eventfd
+ .long sys_fallocate
+ .long sys_semtimedop /* 325 */
+ .long sys_timerfd_settime
+ .long sys_timerfd_gettime
diff --git a/include/asm-microblaze/unistd.h b/include/asm-microblaze/unistd.h
new file mode 100644
index 0000000..dc3d7f8
--- /dev/null
+++ b/include/asm-microblaze/unistd.h
@@ -0,0 +1,390 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_UNISTD_H
+#define _ASM_MICROBLAZE_UNISTD_H
+
+#define __NR_restart_syscall 0
+#define __NR_exit 1
+#define __NR_fork 2
+#define __NR_read 3
+#define __NR_write 4
+#define __NR_open 5
+#define __NR_close 6
+#define __NR_waitpid 7
+#define __NR_creat 8
+#define __NR_link 9
+#define __NR_unlink 10
+#define __NR_execve 11
+#define __NR_chdir 12
+#define __NR_time 13
+#define __NR_mknod 14
+#define __NR_chmod 15
+#define __NR_lchown 16
+#define __NR_break 17
+#define __NR_oldstat 18
+#define __NR_lseek 19
+#define __NR_getpid 20
+#define __NR_mount 21
+#define __NR_umount 22
+#define __NR_setuid 23
+#define __NR_getuid 24
+#define __NR_stime 25
+#define __NR_ptrace 26
+#define __NR_alarm 27
+#define __NR_oldfstat 28
+#define __NR_pause 29
+#define __NR_utime 30
+#define __NR_stty 31
+#define __NR_gtty 32
+#define __NR_access 33
+#define __NR_nice 34
+#define __NR_ftime 35
+#define __NR_sync 36
+#define __NR_kill 37
+#define __NR_rename 38
+#define __NR_mkdir 39
+#define __NR_rmdir 40
+#define __NR_dup 41
+#define __NR_pipe 42
+#define __NR_times 43
+#define __NR_prof 44
+#define __NR_brk 45
+#define __NR_setgid 46
+#define __NR_getgid 47
+#define __NR_signal 48
+#define __NR_geteuid 49
+#define __NR_getegid 50
+#define __NR_acct 51
+#define __NR_umount2 52
+#define __NR_lock 53
+#define __NR_ioctl 54
+#define __NR_fcntl 55
+#define __NR_mpx 56
+#define __NR_setpgid 57
+#define __NR_ulimit 58
+#define __NR_oldolduname 59
+#define __NR_umask 60
+#define __NR_chroot 61
+#define __NR_ustat 62
+#define __NR_dup2 63
+#define __NR_getppid 64
+#define __NR_getpgrp 65
+#define __NR_setsid 66
+#define __NR_sigaction 67
+#define __NR_sgetmask 68
+#define __NR_ssetmask 69
+#define __NR_setreuid 70
+#define __NR_setregid 71
+#define __NR_sigsuspend 72
+#define __NR_sigpending 73
+#define __NR_sethostname 74
+#define __NR_setrlimit 75
+#define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */
+#define __NR_getrusage 77
+#define __NR_gettimeofday 78
+#define __NR_settimeofday 79
+#define __NR_getgroups 80
+#define __NR_setgroups 81
+#define __NR_select 82
+#define __NR_symlink 83
+#define __NR_oldlstat 84
+#define __NR_readlink 85
+#define __NR_uselib 86
+#define __NR_swapon 87
+#define __NR_reboot 88
+#define __NR_readdir 89
+#define __NR_mmap 90
+#define __NR_munmap 91
+#define __NR_truncate 92
+#define __NR_ftruncate 93
+#define __NR_fchmod 94
+#define __NR_fchown 95
+#define __NR_getpriority 96
+#define __NR_setpriority 97
+#define __NR_profil 98
+#define __NR_statfs 99
+#define __NR_fstatfs 100
+#define __NR_ioperm 101
+#define __NR_socketcall 102
+#define __NR_syslog 103
+#define __NR_setitimer 104
+#define __NR_getitimer 105
+#define __NR_stat 106
+#define __NR_lstat 107
+#define __NR_fstat 108
+#define __NR_olduname 109
+#define __NR_iopl 110
+#define __NR_vhangup 111
+#define __NR_idle 112
+#define __NR_vm86old 113
+#define __NR_wait4 114
+#define __NR_swapoff 115
+#define __NR_sysinfo 116
+#define __NR_ipc 117
+#define __NR_fsync 118
+#define __NR_sigreturn 119
+#define __NR_clone 120
+#define __NR_setdomainname 121
+#define __NR_uname 122
+#define __NR_modify_ldt 123
+#define __NR_adjtimex 124
+#define __NR_mprotect 125
+#define __NR_sigprocmask 126
+#define __NR_create_module 127
+#define __NR_init_module 128
+#define __NR_delete_module 129
+#define __NR_get_kernel_syms 130
+#define __NR_quotactl 131
+#define __NR_getpgid 132
+#define __NR_fchdir 133
+#define __NR_bdflush 134
+#define __NR_sysfs 135
+#define __NR_personality 136
+#define __NR_afs_syscall 137 /* Syscall for Andrew File System */
+#define __NR_setfsuid 138
+#define __NR_setfsgid 139
+#define __NR__llseek 140
+#define __NR_getdents 141
+#define __NR__newselect 142
+#define __NR_flock 143
+#define __NR_msync 144
+#define __NR_readv 145
+#define __NR_writev 146
+#define __NR_getsid 147
+#define __NR_fdatasync 148
+#define __NR__sysctl 149
+#define __NR_mlock 150
+#define __NR_munlock 151
+#define __NR_mlockall 152
+#define __NR_munlockall 153
+#define __NR_sched_setparam 154
+#define __NR_sched_getparam 155
+#define __NR_sched_setscheduler 156
+#define __NR_sched_getscheduler 157
+#define __NR_sched_yield 158
+#define __NR_sched_get_priority_max 159
+#define __NR_sched_get_priority_min 160
+#define __NR_sched_rr_get_interval 161
+#define __NR_nanosleep 162
+#define __NR_mremap 163
+#define __NR_setresuid 164
+#define __NR_getresuid 165
+#define __NR_vm86 166
+#define __NR_query_module 167
+#define __NR_poll 168
+#define __NR_nfsservctl 169
+#define __NR_setresgid 170
+#define __NR_getresgid 171
+#define __NR_prctl 172
+#define __NR_rt_sigreturn 173
+#define __NR_rt_sigaction 174
+#define __NR_rt_sigprocmask 175
+#define __NR_rt_sigpending 176
+#define __NR_rt_sigtimedwait 177
+#define __NR_rt_sigqueueinfo 178
+#define __NR_rt_sigsuspend 179
+#define __NR_pread64 180
+#define __NR_pwrite64 181
+#define __NR_chown 182
+#define __NR_getcwd 183
+#define __NR_capget 184
+#define __NR_capset 185
+#define __NR_sigaltstack 186
+#define __NR_sendfile 187
+#define __NR_getpmsg 188 /* some people actually want streams */
+#define __NR_putpmsg 189 /* some people actually want streams */
+#define __NR_vfork 190
+#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
+#define __NR_mmap2 192
+#define __NR_truncate64 193
+#define __NR_ftruncate64 194
+#define __NR_stat64 195
+#define __NR_lstat64 196
+#define __NR_fstat64 197
+#define __NR_lchown32 198
+#define __NR_getuid32 199
+#define __NR_getgid32 200
+#define __NR_geteuid32 201
+#define __NR_getegid32 202
+#define __NR_setreuid32 203
+#define __NR_setregid32 204
+#define __NR_getgroups32 205
+#define __NR_setgroups32 206
+#define __NR_fchown32 207
+#define __NR_setresuid32 208
+#define __NR_getresuid32 209
+#define __NR_setresgid32 210
+#define __NR_getresgid32 211
+#define __NR_chown32 212
+#define __NR_setuid32 213
+#define __NR_setgid32 214
+#define __NR_setfsuid32 215
+#define __NR_setfsgid32 216
+#define __NR_pivot_root 217
+#define __NR_mincore 218
+#define __NR_madvise 219
+#define __NR_madvise1 219 /* delete when C lib stub is removed */
+#define __NR_getdents64 220
+#define __NR_fcntl64 221
+/* 223 is unused */
+#define __NR_gettid 224
+#define __NR_readahead 225
+#define __NR_setxattr 226
+#define __NR_lsetxattr 227
+#define __NR_fsetxattr 228
+#define __NR_getxattr 229
+#define __NR_lgetxattr 230
+#define __NR_fgetxattr 231
+#define __NR_listxattr 232
+#define __NR_llistxattr 233
+#define __NR_flistxattr 234
+#define __NR_removexattr 235
+#define __NR_lremovexattr 236
+#define __NR_fremovexattr 237
+#define __NR_tkill 238
+#define __NR_sendfile64 239
+#define __NR_futex 240
+#define __NR_sched_setaffinity 241
+#define __NR_sched_getaffinity 242
+#define __NR_set_thread_area 243
+#define __NR_get_thread_area 244
+#define __NR_io_setup 245
+#define __NR_io_destroy 246
+#define __NR_io_getevents 247
+#define __NR_io_submit 248
+#define __NR_io_cancel 249
+#define __NR_fadvise64 250
+/* 251 is available for reuse (was briefly sys_set_zone_reclaim) */
+#define __NR_exit_group 252
+#define __NR_lookup_dcookie 253
+#define __NR_epoll_create 254
+#define __NR_epoll_ctl 255
+#define __NR_epoll_wait 256
+#define __NR_remap_file_pages 257
+#define __NR_set_tid_address 258
+#define __NR_timer_create 259
+#define __NR_timer_settime (__NR_timer_create+1)
+#define __NR_timer_gettime (__NR_timer_create+2)
+#define __NR_timer_getoverrun (__NR_timer_create+3)
+#define __NR_timer_delete (__NR_timer_create+4)
+#define __NR_clock_settime (__NR_timer_create+5)
+#define __NR_clock_gettime (__NR_timer_create+6)
+#define __NR_clock_getres (__NR_timer_create+7)
+#define __NR_clock_nanosleep (__NR_timer_create+8)
+#define __NR_statfs64 268
+#define __NR_fstatfs64 269
+#define __NR_tgkill 270
+#define __NR_utimes 271
+#define __NR_fadvise64_64 272
+#define __NR_vserver 273
+#define __NR_mbind 274
+#define __NR_get_mempolicy 275
+#define __NR_set_mempolicy 276
+#define __NR_mq_open 277
+#define __NR_mq_unlink (__NR_mq_open+1)
+#define __NR_mq_timedsend (__NR_mq_open+2)
+#define __NR_mq_timedreceive (__NR_mq_open+3)
+#define __NR_mq_notify (__NR_mq_open+4)
+#define __NR_mq_getsetattr (__NR_mq_open+5)
+#define __NR_kexec_load 283
+#define __NR_waitid 284
+/* #define __NR_sys_setaltroot 285 */
+#define __NR_add_key 286
+#define __NR_request_key 287
+#define __NR_keyctl 288
+#define __NR_ioprio_set 289
+#define __NR_ioprio_get 290
+#define __NR_inotify_init 291
+#define __NR_inotify_add_watch 292
+#define __NR_inotify_rm_watch 293
+#define __NR_migrate_pages 294
+#define __NR_openat 295
+#define __NR_mkdirat 296
+#define __NR_mknodat 297
+#define __NR_fchownat 298
+#define __NR_futimesat 299
+#define __NR_fstatat64 300
+#define __NR_unlinkat 301
+#define __NR_renameat 302
+#define __NR_linkat 303
+#define __NR_symlinkat 304
+#define __NR_readlinkat 305
+#define __NR_fchmodat 306
+#define __NR_faccessat 307
+#define __NR_pselect6 308
+#define __NR_ppoll 309
+#define __NR_unshare 310
+#define __NR_set_robust_list 311
+#define __NR_get_robust_list 312
+#define __NR_splice 313
+#define __NR_sync_file_range 314
+#define __NR_tee 315
+#define __NR_vmsplice 316
+#define __NR_move_pages 317
+#define __NR_getcpu 318
+#define __NR_epoll_pwait 319
+#define __NR_utimensat 320
+#define __NR_signalfd 321
+#define __NR_timerfd_create 322
+#define __NR_eventfd 323
+#define __NR_fallocate 324
+#define __NR_semtimedop 325
+#define __NR_timerfd_settime 326
+#define __NR_timerfd_gettime 327
+
+#ifdef __KERNEL__
+
+#define __NR_syscalls 327
+
+#define __NR__exit __NR_exit
+#define NR_syscalls __NR_syscalls
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+
+#define __ARCH_WANT_IPC_PARSE_VERSION
+/* #define __ARCH_WANT_OLD_READDIR */
+/* #define __ARCH_WANT_OLD_STAT */
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_ALARM
+#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_SYS_PAUSE
+#define __ARCH_WANT_SYS_SGETMASK
+#define __ARCH_WANT_SYS_SIGNAL
+#define __ARCH_WANT_SYS_TIME
+#define __ARCH_WANT_SYS_UTIME
+#define __ARCH_WANT_SYS_WAITPID
+#define __ARCH_WANT_SYS_SOCKETCALL
+#define __ARCH_WANT_SYS_FADVISE64
+#define __ARCH_WANT_SYS_GETPGRP
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_NICE
+/* #define __ARCH_WANT_SYS_OLD_GETRLIMIT */
+#define __ARCH_WANT_SYS_OLDUMOUNT
+#define __ARCH_WANT_SYS_SIGPENDING
+#define __ARCH_WANT_SYS_SIGPROCMASK
+#define __ARCH_WANT_SYS_RT_SIGACTION
+/* #define __ARCH_WANT_SYS_RT_SIGSUSPEND */
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
+
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_MICROBLAZE_UNISTD_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/cputime.h | 1 +
include/asm-microblaze/div64.h | 1 +
include/asm-microblaze/emergency-restart.h | 1 +
include/asm-microblaze/errno.h | 1 +
include/asm-microblaze/futex.h | 1 +
include/asm-microblaze/kdebug.h | 1 +
include/asm-microblaze/local.h | 1 +
include/asm-microblaze/mutex.h | 1 +
include/asm-microblaze/namei.h | 22 ++++++++++++++++++++++
include/asm-microblaze/percpu.h | 1 +
include/asm-microblaze/resource.h | 1 +
11 files changed, 32 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/auxvec.h
create mode 100644 include/asm-microblaze/cputime.h
create mode 100644 include/asm-microblaze/div64.h
create mode 100644 include/asm-microblaze/emergency-restart.h
create mode 100644 include/asm-microblaze/errno.h
create mode 100644 include/asm-microblaze/futex.h
create mode 100644 include/asm-microblaze/kdebug.h
create mode 100644 include/asm-microblaze/local.h
create mode 100644 include/asm-microblaze/mutex.h
create mode 100644 include/asm-microblaze/namei.h
create mode 100644 include/asm-microblaze/percpu.h
create mode 100644 include/asm-microblaze/resource.h
create mode 100644 include/asm-microblaze/user.h
diff --git a/include/asm-microblaze/auxvec.h b/include/asm-microblaze/auxvec.h
new file mode 100644
index 0000000..e69de29
diff --git a/include/asm-microblaze/cputime.h b/include/asm-microblaze/cputime.h
new file mode 100644
index 0000000..6d68ad7
--- /dev/null
+++ b/include/asm-microblaze/cputime.h
@@ -0,0 +1 @@
+#include <asm-generic/cputime.h>
diff --git a/include/asm-microblaze/div64.h b/include/asm-microblaze/div64.h
new file mode 100644
index 0000000..6cd978c
--- /dev/null
+++ b/include/asm-microblaze/div64.h
@@ -0,0 +1 @@
+#include <asm-generic/div64.h>
diff --git a/include/asm-microblaze/emergency-restart.h b/include/asm-microblaze/emergency-restart.h
new file mode 100644
index 0000000..3711bd9
--- /dev/null
+++ b/include/asm-microblaze/emergency-restart.h
@@ -0,0 +1 @@
+#include <asm-generic/emergency-restart.h>
diff --git a/include/asm-microblaze/errno.h b/include/asm-microblaze/errno.h
new file mode 100644
index 0000000..4c82b50
--- /dev/null
+++ b/include/asm-microblaze/errno.h
@@ -0,0 +1 @@
+#include <asm-generic/errno.h>
diff --git a/include/asm-microblaze/futex.h b/include/asm-microblaze/futex.h
new file mode 100644
index 0000000..0b74582
--- /dev/null
+++ b/include/asm-microblaze/futex.h
@@ -0,0 +1 @@
+#include <asm-generic/futex.h>
diff --git a/include/asm-microblaze/kdebug.h b/include/asm-microblaze/kdebug.h
new file mode 100644
index 0000000..6ece1b0
--- /dev/null
+++ b/include/asm-microblaze/kdebug.h
@@ -0,0 +1 @@
+#include <asm-generic/kdebug.h>
diff --git a/include/asm-microblaze/local.h b/include/asm-microblaze/local.h
new file mode 100644
index 0000000..c11c530
--- /dev/null
+++ b/include/asm-microblaze/local.h
@@ -0,0 +1 @@
+#include <asm-generic/local.h>
diff --git a/include/asm-microblaze/mutex.h b/include/asm-microblaze/mutex.h
new file mode 100644
index 0000000..ff6101a
--- /dev/null
+++ b/include/asm-microblaze/mutex.h
@@ -0,0 +1 @@
+#include <asm-generic/mutex-dec.h>
diff --git a/include/asm-microblaze/namei.h b/include/asm-microblaze/namei.h
new file mode 100644
index 0000000..61d60b8
--- /dev/null
+++ b/include/asm-microblaze/namei.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_NAMEI_H
+#define _ASM_MICROBLAZE_NAMEI_H
+
+#ifdef __KERNEL__
+
+/* This dummy routine maybe changed to something useful
+ * for /usr/gnemul/ emulation stuff.
+ * Look at asm-sparc/namei.h for details.
+ */
+#define __emul_prefix() NULL
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_MICROBLAZE_NAMEI_H */
diff --git a/include/asm-microblaze/percpu.h b/include/asm-microblaze/percpu.h
new file mode 100644
index 0000000..06a959d
--- /dev/null
+++ b/include/asm-microblaze/percpu.h
@@ -0,0 +1 @@
+#include <asm-generic/percpu.h>
diff --git a/include/asm-microblaze/resource.h b/include/asm-microblaze/resource.h
new file mode 100644
index 0000000..04bc4db
--- /dev/null
+++ b/include/asm-microblaze/resource.h
@@ -0,0 +1 @@
+#include <asm-generic/resource.h>
diff --git a/include/asm-microblaze/user.h b/include/asm-microblaze/user.h
new file mode 100644
index 0000000..e69de29
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/lib/uaccess.c | 41 +++++++++++++
include/asm-microblaze/uaccess.h | 124 ++++++++++++++++++++++++++++++++++++++
2 files changed, 165 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/lib/uaccess.c
create mode 100644 include/asm-microblaze/uaccess.h
diff --git a/arch/microblaze/lib/uaccess.c b/arch/microblaze/lib/uaccess.c
new file mode 100644
index 0000000..03a3051
--- /dev/null
+++ b/arch/microblaze/lib/uaccess.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/string.h>
+#include <asm/uaccess.h>
+
+#include <asm/bug.h>
+
+long strnlen_user(const char __user *s, long n)
+{
+ return strlen(s) + 1;
+}
+
+#define __do_strncpy_from_user(dst, src, count, res) \
+ do { \
+ char *tmp; \
+ strncpy(dst, src, count); \
+ for (tmp = dst; *tmp && count > 0; tmp++, count--) \
+ ; \
+ res = (tmp - dst); \
+ } while (0)
+
+long __strncpy_from_user(char *dst, const char __user *src, long count)
+{
+ long res;
+ __do_strncpy_from_user(dst, src, count, res);
+ return res;
+}
+
+long strncpy_from_user(char *dst, const char *src, long count)
+{
+ long res = -EFAULT;
+ if (access_ok(VERIFY_READ, src, 1))
+ __do_strncpy_from_user(dst, src, count, res);
+ return res;
+}
diff --git a/include/asm-microblaze/uaccess.h b/include/asm-microblaze/uaccess.h
new file mode 100644
index 0000000..e50ad56
--- /dev/null
+++ b/include/asm-microblaze/uaccess.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_UACCESS_H
+#define _ASM_MICROBLAZE_UACCESS_H
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <asm/segment.h>
+#include <asm/string.h>
+
+#include <linux/sched.h> /* RLIMIT_FSIZE */
+/* #include <linux/errno.h> */
+
+#define VERIFY_READ 0
+#define VERIFY_WRITE 1
+
+extern int ___range_ok(unsigned long addr, unsigned long size);
+
+#define __range_ok(addr, size) \
+ ___range_ok((unsigned long)(addr), (unsigned long)(size))
+
+#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
+#define __access_ok(add, size) (__range_ok((addr), (size)) == 0)
+
+extern inline int bad_user_access_length(void)
+{
+ return 0;
+}
+
+#define __get_user(var, ptr) \
+ ({ \
+ int __gu_err = 0; \
+ switch (sizeof(*(ptr))) { \
+ case 1: \
+ case 2: \
+ case 4: \
+ (var) = *(ptr); \
+ break; \
+ case 8: \
+ memcpy((void *) &(var), (ptr), 8); \
+ break; \
+ default: \
+ (var) = 0; \
+ __gu_err = __get_user_bad(); \
+ break; \
+ } \
+ __gu_err; \
+ })
+
+#define __get_user_bad() (bad_user_access_length(), (-EFAULT))
+
+#define __put_user(var, ptr) \
+ ({ \
+ int __pu_err = 0; \
+ switch (sizeof(*(ptr))) { \
+ case 1: \
+ case 2: \
+ case 4: \
+ *(ptr) = (var); \
+ break; \
+ case 8: { \
+ typeof(*(ptr)) __pu_val = var; \
+ memcpy(ptr, &__pu_val, sizeof(__pu_val));\
+ } \
+ break; \
+ default: \
+ __pu_err = __put_user_bad(); \
+ break; \
+ } \
+ __pu_err; \
+ })
+
+#define __put_user_bad() (bad_user_access_length(), (-EFAULT))
+
+#define put_user(x, ptr) __put_user(x, ptr)
+#define get_user(x, ptr) __get_user(x, ptr)
+
+#define copy_to_user(to, from, n) (memcpy(to, from, n), 0)
+#define copy_from_user(to, from, n) (memcpy(to, from, n), 0)
+
+#define __copy_to_user(to, from, n) (copy_to_user(to, from, n))
+#define __copy_from_user(to, from, n) (copy_from_user(to, from, n))
+#define __copy_to_user_inatomic(to, from, n) (__copy_to_user(to, from, n))
+#define __copy_from_user_inatomic(to, from, n) (__copy_from_user(to, from, n))
+
+#define __clear_user(addr, n) (memset((void *)addr, 0, n), 0)
+
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue. No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path. This means when everything is well,
+ * we don't even have to jump over them. Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+struct exception_table_entry {
+ unsigned long insn, fixup;
+};
+
+static inline unsigned long clear_user(void *addr, unsigned long size)
+{
+ if (access_ok(VERIFY_WRITE, addr, size))
+ size = __clear_user(addr, size);
+ return size;
+}
+
+/* Returns 0 if exception not found and fixup otherwise. */
+extern unsigned long search_exception_table(unsigned long);
+
+extern long strncpy_from_user(char *dst, const char *src, long count);
+extern long strnlen_user(const char *src, long count);
+extern long __strncpy_from_user(char *dst, const char *src, long count);
+
+#endif /* _ASM_MICROBLAZE_UACCESS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/heartbeat.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/heartbeat.c
diff --git a/arch/microblaze/kernel/heartbeat.c b/arch/microblaze/kernel/heartbeat.c
new file mode 100644
index 0000000..5a21c1d
--- /dev/null
+++ b/arch/microblaze/kernel/heartbeat.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/sched.h>
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/setup.h>
+
+void heartbeat(void)
+{
+ static unsigned int cnt, period, dist;
+
+ if (cnt == 0 || cnt == dist)
+ iowrite32(1, CONFIG_HEART_BEAT_ADDRESS);
+ else if (cnt == 7 || cnt == dist + 7)
+ iowrite32(0, CONFIG_HEART_BEAT_ADDRESS);
+
+ if (++cnt > period) {
+ cnt = 0;
+ /*
+ * The hyperbolic function below modifies the heartbeat period
+ * length in dependency of the current (5min) load. It goes
+ * through the points f(0)=126, f(1)=86, f(5)=51, f(inf)->30.
+ */
+ period = ((672 << FSHIFT) / (5 * avenrun[0] +
+ (7 << FSHIFT))) + 30;
+ dist = period / 4;
+ }
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-generic/param.h | 32 ++++++++++++++++++++++++++++++++
include/asm-microblaze/device.h | 21 +++++++++++++++++++++
include/asm-microblaze/param.h | 1 +
include/asm-microblaze/topology.h | 1 +
4 files changed, 55 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/param.h
create mode 100644 include/asm-microblaze/device.h
create mode 100644 include/asm-microblaze/param.h
create mode 100644 include/asm-microblaze/topology.h
diff --git a/include/asm-generic/param.h b/include/asm-generic/param.h
new file mode 100644
index 0000000..b2ed486
--- /dev/null
+++ b/include/asm-generic/param.h
@@ -0,0 +1,32 @@
+/*
+ * include/asm-generic/param.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#ifndef _ASM_GENERIC_PARAM_H
+#define _ASM_GENERIC_PARAM_H
+
+#ifdef __KERNEL__
+#define HZ CONFIG_HZ /* internal kernel timer frequency */
+#define USER_HZ 100 /* for user interfaces in "ticks" */
+#define CLOCKS_PER_SEC (USER_HZ) /* frequency at which times() counts */
+#endif /* __KERNEL__ */
+
+#ifndef HZ
+#define HZ 100
+#endif
+
+#define EXEC_PAGESIZE 4096
+
+#ifndef NOGROUP
+#define NOGROUP (-1)
+#endif
+
+#define MAXHOSTNAMELEN 64 /* max length of hostname */
+
+#endif /* _ASM_GENERIC_PARAM_H */
diff --git a/include/asm-microblaze/device.h b/include/asm-microblaze/device.h
new file mode 100644
index 0000000..c042830
--- /dev/null
+++ b/include/asm-microblaze/device.h
@@ -0,0 +1,21 @@
+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License v2. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_DEVICE_H
+#define _ASM_MICROBLAZE_DEVICE_H
+
+struct device_node;
+
+struct dev_archdata {
+ /* Optional pointer to an OF device node */
+ struct device_node *of_node;
+};
+
+#endif /* _ASM_MICROBLAZE_DEVICE_H */
+
+
diff --git a/include/asm-microblaze/param.h b/include/asm-microblaze/param.h
new file mode 100644
index 0000000..965d454
--- /dev/null
+++ b/include/asm-microblaze/param.h
@@ -0,0 +1 @@
+#include <asm-generic/param.h>
diff --git a/include/asm-microblaze/topology.h b/include/asm-microblaze/topology.h
new file mode 100644
index 0000000..5428f33
--- /dev/null
+++ b/include/asm-microblaze/topology.h
@@ -0,0 +1 @@
+#include <asm-generic/topology.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/bug.h | 15 +++++++++++++++
include/asm-microblaze/bugs.h | 17 +++++++++++++++++
2 files changed, 32 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/bug.h
create mode 100644 include/asm-microblaze/bugs.h
diff --git a/include/asm-microblaze/bug.h b/include/asm-microblaze/bug.h
new file mode 100644
index 0000000..8eb2cdd
--- /dev/null
+++ b/include/asm-microblaze/bug.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_BUG_H
+#define _ASM_MICROBLAZE_BUG_H
+
+#include <linux/kernel.h>
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_MICROBLAZE_BUG_H */
diff --git a/include/asm-microblaze/bugs.h b/include/asm-microblaze/bugs.h
new file mode 100644
index 0000000..f2c6593
--- /dev/null
+++ b/include/asm-microblaze/bugs.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_BUGS_H
+#define _ASM_MICROBLAZE_BUGS_H
+
+static inline void check_bugs(void)
+{
+ /* nothing to do */
+}
+
+#endif /* _ASM_MICROBLAZE_BUGS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/setup.h | 41 +++++++++
include/asm-microblaze/string.h | 20 +++++
include/asm-microblaze/thread_info.h | 154 ++++++++++++++++++++++++++++++++++
3 files changed, 215 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/setup.h
create mode 100644 include/asm-microblaze/string.h
create mode 100644 include/asm-microblaze/thread_info.h
diff --git a/include/asm-microblaze/setup.h b/include/asm-microblaze/setup.h
new file mode 100644
index 0000000..9de20af
--- /dev/null
+++ b/include/asm-microblaze/setup.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SETUP_H
+#define _ASM_MICROBLAZE_SETUP_H
+
+#include <linux/init.h>
+
+extern unsigned int boot_cpuid;
+extern int have_of;
+
+#define COMMAND_LINE_SIZE 256
+extern char cmd_line[COMMAND_LINE_SIZE];
+
+int __init setup_early_printk(char *opt);
+void early_printk(const char *fmt, ...);
+
+#ifdef CONFIG_HEART_BEAT
+void heartbeat(void);
+#endif
+
+void system_timer_init(void);
+void time_init(void);
+unsigned long long sched_clock(void);
+
+void __init setup_memory(void);
+void __init machine_early_init(const char *cmdline, unsigned int ram,
+ unsigned int fdt);
+
+void machine_restart(char *cmd);
+void machine_shutdown(void);
+void machine_halt(void);
+void machine_power_off(void);
+
+#endif /* _ASM_MICROBLAZE_SETUP_H */
diff --git a/include/asm-microblaze/string.h b/include/asm-microblaze/string.h
new file mode 100644
index 0000000..52a14a3
--- /dev/null
+++ b/include/asm-microblaze/string.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_STRING_H
+#define _ASM_MICROBLAZE_STRING_H
+
+#define __HAVE_ARCH_MEMSET
+#define __HAVE_ARCH_MEMCPY
+#define __HAVE_ARCH_MEMMOVE
+
+extern void *memset(void *, int, __kernel_size_t);
+extern void *memcpy(void *, const void *, __kernel_size_t);
+extern void *memmove(void *, const void *, __kernel_size_t);
+
+#endif /* _ASM_MICROBLAZE_STRING_H */
diff --git a/include/asm-microblaze/thread_info.h b/include/asm-microblaze/thread_info.h
new file mode 100644
index 0000000..d04d195
--- /dev/null
+++ b/include/asm-microblaze/thread_info.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_THREAD_INFO_H
+#define _ASM_MICROBLAZE_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+/* we have 8k stack */
+#define THREAD_SHIFT 13
+#define THREAD_SIZE (1 << THREAD_SHIFT)
+
+#ifndef __ASSEMBLY__
+# include <asm/processor.h>
+# include <asm/segment.h>
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ * must also be changed
+ */
+
+struct cpu_context {
+ __u32 r1; /* stack pointer */
+ __u32 r2;
+ /* dedicated registers */
+ __u32 r13;
+ __u32 r14;
+ __u32 r15;
+ __u32 r16;
+ __u32 r17;
+ __u32 r18;
+ /* non-volatile registers */
+ __u32 r19;
+ __u32 r20;
+ __u32 r21;
+ __u32 r22;
+ __u32 r23;
+ __u32 r24;
+ __u32 r25;
+ __u32 r26;
+ __u32 r27;
+ __u32 r28;
+ __u32 r29;
+ __u32 r30;
+ /* r31 is used as current task pointer */
+ /* special purpose registers */
+ __u32 msr;
+ __u32 ear;
+ __u32 esr;
+ __u32 fsr;
+};
+
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ unsigned long flags; /* low level flags */
+ unsigned long status; /* thread-synchronous flags */
+ __u32 cpu; /* current CPU */
+ __s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/
+ mm_segment_t addr_limit; /* thread address space */
+ struct restart_block restart_block;
+
+ struct cpu_context cpu_context;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .flags = 0, \
+ .cpu = 0, \
+ .preempt_count = 1, \
+ .addr_limit = KERNEL_DS, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+ register unsigned long sp asm("r1");
+
+ return (struct thread_info *)(sp & ~(THREAD_SIZE-1));
+}
+
+/* thread information allocation */
+#define alloc_thread_info(tsk) \
+ ((struct thread_info *) __get_free_pages(GFP_KERNEL, 1))
+#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
+
+#endif /* __ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE 0x10000000
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may
+ * need to access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
+#define TIF_SIGPENDING 2 /* signal pending */
+#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
+/* restore singlestep on return to user mode */
+#define TIF_SINGLESTEP 4
+#define TIF_IRET 5 /* return with iret */
+#define TIF_MEMDIE 6
+/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_POLLING_NRFLAG 16
+
+#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
+#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
+#define _TIF_IRET (1<<TIF_IRET)
+#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
+
+/* work to do on interrupt/exception return */
+#define _TIF_WORK_MASK 0x0000FFFE
+/* work to do on any return to u-space */
+#define _TIF_ALLWORK_MASK 0x0000FFFF
+
+/*
+ * Thread-synchronous status.
+ *
+ * This is different from the flags in that nobody else
+ * ever touches our thread-synchronous status, so we don't
+ * have to worry about atomic accesses.
+ */
+/* FPU was used by this task this quantum (SMP) */
+#define TS_USEDFPU 0x0001
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_MICROBLAZE_THREAD_INFO_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
drivers/block/Kconfig | 2 +-
drivers/char/Kconfig | 2 +-
drivers/serial/Kconfig | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 0d1d213..a92767c 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -413,7 +413,7 @@ source "drivers/s390/block/Kconfig"
config XILINX_SYSACE
tristate "Xilinx SystemACE support"
- depends on 4xx
+ depends on 4xx || MICROBLAZE
help
Include support for the Xilinx SystemACE CompactFlash interface
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 2d854bb..981c57a 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -879,7 +879,7 @@ config DTLK
config XILINX_HWICAP
tristate "Xilinx HWICAP Support"
- depends on XILINX_VIRTEX
+ depends on XILINX_VIRTEX || MICROBLAZE
help
This option enables support for Xilinx Internal Configuration
Access Port (ICAP) driver. The ICAP is used on Xilinx Virtex
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 9bc4276..984ba34 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -776,7 +776,7 @@ config SERIAL_IMX_CONSOLE
config SERIAL_UARTLITE
tristate "Xilinx uartlite serial port support"
- depends on PPC32
+ depends on PPC32 || MICROBLAZE
select SERIAL_CORE
help
Say Y here if you want to use the Xilinx uartlite serial controller.
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/mm/init.c | 184 ++++++++++++++++++++++++++++++++++
include/asm-microblaze/mmu.h | 17 +++
include/asm-microblaze/mmu_context.h | 22 ++++
include/asm-microblaze/tlb.h | 16 +++
include/asm-microblaze/tlbflush.h | 20 ++++
5 files changed, 259 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/mm/init.c
create mode 100644 include/asm-microblaze/mmu.h
create mode 100644 include/asm-microblaze/mmu_context.h
create mode 100644 include/asm-microblaze/tlb.h
create mode 100644 include/asm-microblaze/tlbflush.h
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
new file mode 100644
index 0000000..5bb3e01
--- /dev/null
+++ b/arch/microblaze/mm/init.c
@@ -0,0 +1,184 @@
+/*
+ * arch/microblaze/mm/init.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#undef DEBUG
+
+#include <linux/autoconf.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include "../../../mm/internal.h"
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/pfn.h>
+#include <linux/lmb.h>
+
+#include <asm/sections.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+
+char *klimit = _end;
+static unsigned int memory_start;
+unsigned int memory_end; /* due to mm/nommu.c */
+
+unsigned int __page_offset;
+/* EXPORT_SYMBOL(__page_offset); */
+
+void __init setup_memory(void)
+{
+ int i;
+ unsigned int start, end;
+ unsigned long map_size;
+ unsigned long start_pfn = 0;
+ unsigned long end_pfn = 0;
+
+ /* Find main memory where is the kernel */
+ for (i = 0; i < lmb.memory.cnt; i++) {
+ start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
+ end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i);
+ if ((start_pfn <= (((int)_text) >> PAGE_SHIFT)) &&
+ (((int)_text >> PAGE_SHIFT) <= end_pfn)) {
+ memory_end = (end_pfn << PAGE_SHIFT) - 1;
+ PAGE_OFFSET = memory_start = start_pfn << PAGE_SHIFT;
+ pr_debug("%s: Main mem: 0x%x-0x%x\n", __func__,
+ memory_start, memory_end);
+ break;
+ }
+ }
+ /*
+ * start_pfn - start page - starting point
+ * end_pfn - first unused page
+ * memory_start - base physical address of main memory
+ * memory_end - end physical address of main memory
+ * PAGE_OFFSET - moving of first page
+ *
+ * Kernel:
+ * start: base phys address of kernel - page align
+ * end: base phys address of kernel - page align
+ *
+ * min_low_pfn - the first page (mm/bootmem.c - node_boot_start)
+ * max_low_pfn
+ * max_mapnr - the first unused page (mm/bootmem.c - node_low_pfn)
+ * num_physpages - number of all pages
+ *
+ */
+
+ /* reservation of region where is the kernel */
+ start = PFN_DOWN((int)_text) << PAGE_SHIFT;
+ end = PAGE_ALIGN((unsigned long)klimit);
+ lmb_reserve(start, end - start);
+ pr_debug("%s: kernel addr 0x%08x-0x%08x\n", __func__, start, end);
+
+ /* calculate free pages, etc. */
+ min_low_pfn = PFN_UP(start_pfn << PAGE_SHIFT);
+ max_mapnr = PFN_DOWN((end_pfn << PAGE_SHIFT));
+ max_low_pfn = max_mapnr - min_low_pfn;
+ num_physpages = max_mapnr - min_low_pfn + 1;
+ printk(KERN_INFO "%s: max_mapnr: %#lx\n", __func__, max_mapnr);
+ printk(KERN_INFO "%s: min_low_pfn: %#lx\n", __func__, min_low_pfn);
+ printk(KERN_INFO "%s: max_low_pfn: %#lx\n", __func__, max_low_pfn);
+
+ /* add place for data pages */
+ map_size = init_bootmem_node(NODE_DATA(0), PFN_UP(end),
+ min_low_pfn, max_mapnr);
+ lmb_reserve(PFN_UP(end) << PAGE_SHIFT, map_size);
+
+ /* free bootmem is whole main memory */
+ free_bootmem_node(NODE_DATA(0), start_pfn << PAGE_SHIFT,
+ ((end_pfn - start_pfn) << PAGE_SHIFT) - 1);
+
+ /* reserve allocate blocks */
+ for (i = 0; i < lmb.reserved.cnt; i++) {
+ pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
+ (u32) lmb.reserved.region[i].base,
+ (u32) lmb_size_bytes(&lmb.reserved, i));
+ reserve_bootmem(lmb.reserved.region[i].base,
+ lmb_size_bytes(&lmb.reserved, i) - 1, BOOTMEM_DEFAULT);
+ }
+}
+
+void __init paging_init(void)
+{
+ int i;
+ unsigned long zones_size[MAX_NR_ZONES];
+
+ /* we can DMA to/from any address. put all page into
+ * ZONE_DMA. */
+ zones_size[ZONE_NORMAL] = max_low_pfn;
+
+ /* every other zones are empty */
+ for (i = 1; i < MAX_NR_ZONES; i++)
+ zones_size[i] = 0;
+
+ free_area_init_node(0, NODE_DATA(0), zones_size,
+ NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT, NULL);
+}
+
+void free_init_pages(char *what, unsigned long begin, unsigned long end)
+{
+ unsigned long addr;
+
+ for (addr = begin; addr < end; addr += PAGE_SIZE) {
+ ClearPageReserved(virt_to_page(addr));
+ init_page_count(virt_to_page(addr));
+ memset((void *)addr, 0xcc, PAGE_SIZE);
+ free_page(addr);
+ totalram_pages++;
+ }
+ printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long start, unsigned long end)
+{
+ int pages = 0;
+ for (; start < end; start += PAGE_SIZE) {
+ ClearPageReserved(virt_to_page(start));
+ set_page_count(virt_to_page(start), 1);
+ free_page(start);
+ totalram_pages++;
+ pages++;
+ }
+ printk(KERN_NOTICE "Freeing initrd memory: %dk freed\n", pages);
+}
+#endif
+
+void free_initmem(void)
+{
+ free_init_pages("unused kernel memory",
+ (unsigned long)(&__init_begin),
+ (unsigned long)(&__init_end));
+}
+
+/* FIXME from arch/powerpc/mm/mem.c*/
+void show_mem(void)
+{
+ printk(KERN_NOTICE "%s\n", __func__);
+}
+
+void __init mem_init(void)
+{
+ high_memory = (void *)(memory_end);
+
+ /* this will put all memory onto the freelists */
+ totalram_pages += free_all_bootmem();
+
+ printk(KERN_INFO "Memory: %luk/%luk available\n",
+ (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+ num_physpages << (PAGE_SHIFT-10));
+}
+
+/* Check against bounds of physical memory */
+int ___range_ok(unsigned long addr, unsigned long size)
+{
+ return ((addr < memory_start) ||
+ ((addr + size) >= memory_end));
+}
diff --git a/include/asm-microblaze/mmu.h b/include/asm-microblaze/mmu.h
new file mode 100644
index 0000000..e9cd52d
--- /dev/null
+++ b/include/asm-microblaze/mmu.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_MMU_H
+#define _ASM_MICROBLAZE_MMU_H
+
+typedef struct {
+ struct vm_list_struct *vmlist;
+ unsigned long end_brk;
+} mm_context_t;
+
+#endif /* _ASM_MICROBLAZE_MMU_H */
diff --git a/include/asm-microblaze/mmu_context.h b/include/asm-microblaze/mmu_context.h
new file mode 100644
index 0000000..bd4952a
--- /dev/null
+++ b/include/asm-microblaze/mmu_context.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_MMU_CONTEXT_H
+#define _ASM_MICROBLAZE_MMU_CONTEXT_H
+
+#define init_new_context(tsk, mm) ({ 0; })
+
+#define enter_lazy_tlb(mm, tsk) do {} while (0)
+#define change_mm_context(old, ctx, _pml4) do {} while (0)
+#define destroy_context(mm) do {} while (0)
+#define deactivate_mm(tsk, mm) do {} while (0)
+#define switch_mm(prev, next, tsk) do {} while (0)
+#define activate_mm(prev, next) do {} while (0)
+
+
+#endif /* _ASM_MICROBLAZE_MMU_CONTEXT_H */
diff --git a/include/asm-microblaze/tlb.h b/include/asm-microblaze/tlb.h
new file mode 100644
index 0000000..d1dfe37
--- /dev/null
+++ b/include/asm-microblaze/tlb.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_TLB_H
+#define _ASM_MICROBLAZE_TLB_H
+
+#define tlb_flush(tlb) do {} while (0)
+
+#include <asm-generic/tlb.h>
+
+#endif /* _ASM_MICROBLAZE_TLB_H */
diff --git a/include/asm-microblaze/tlbflush.h b/include/asm-microblaze/tlbflush.h
new file mode 100644
index 0000000..d7fe762
--- /dev/null
+++ b/include/asm-microblaze/tlbflush.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_TLBFLUSH_H
+#define _ASM_MICROBLAZE_TLBFLUSH_H
+
+#define flush_tlb() BUG()
+#define flush_tlb_all() BUG()
+#define flush_tlb_mm(mm) BUG()
+#define flush_tlb_page(vma, addr) BUG()
+#define flush_tlb_range(mm, start, end) BUG()
+#define flush_tlb_pgtables(mm, start, end) BUG()
+#define flush_tlb_kernel_range(start, end) BUG()
+
+#endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
0 files changed, 0 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/a.out.h
diff --git a/include/asm-microblaze/a.out.h b/include/asm-microblaze/a.out.h
new file mode 100644
index 0000000..e69de29
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/entry.S | 597 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 597 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/entry.S
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
new file mode 100644
index 0000000..cfabea7
--- /dev/null
+++ b/arch/microblaze/kernel/entry.S
@@ -0,0 +1,597 @@
+/*
+ * arch/microblaze/kernel/entry.S
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/linkage.h>
+#include <asm/thread_info.h>
+#include <asm/errno.h>
+#include <asm/asm-offsets.h>
+#include <asm/registers.h>
+#include <asm/unistd.h>
+#include <asm/percpu.h>
+#include <asm/signal.h>
+
+#define PER_CPU(var) per_cpu__##var
+
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ .macro disable_irq
+ msrclr r0, MSR_IE
+ .endm
+
+ .macro enable_irq
+ msrset r0, MSR_IE
+ .endm
+
+ .macro clear_bip
+ msrclr r0, MSR_BIP
+ .endm
+#else
+ .macro disable_irq
+ mfs r11, rmsr
+ andi r11, r11, ~MSR_IE
+ mts rmsr, r11
+ .endm
+
+ .macro enable_irq
+ mfs r11, rmsr
+ ori r11, r11, MSR_IE
+ mts rmsr, r11
+ .endm
+
+ .macro clear_bip
+ mfs r11, rmsr
+ andi r11, r11, ~MSR_BIP
+ mts rmsr, r11
+ .endm
+#endif
+
+ENTRY(_interrupt)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+ beqid r11, 1f
+ nop
+ brid 2f /* jump over */
+ addik r1, r1, (-PT_SIZE) /* room for pt_regs (delay slot) */
+1: /* switch to kernel stack */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ /* calculate kernel stack pointer */
+ addik r1, r1, THREAD_SIZE - PT_SIZE
+2:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3
+ swi r4, r1, PT_R4
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ swi r14, r1, PT_R14
+ swi r14, r1, PT_PC
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* prepare the link register, the argument and jump */
+ la r15, r0, ret_from_intr - 8
+ addk r6, r0, r15
+ braid do_IRQ
+ add r5, r0, r1
+
+ret_from_intr:
+ lwi r11, r1, PT_MODE
+ bneid r11, 3f
+
+ lwi r6, r31, TS_THREAD_INFO /* get thread info */
+ lwi r19, r6, TI_FLAGS /* get flags in thread info */
+ /* do an extra work if any bits are set */
+
+ andi r11, r19, _TIF_NEED_RESCHED
+ beqi r11, 1f
+ bralid r15, schedule
+ nop
+1: andi r11, r19, _TIF_SIGPENDING
+ beqid r11, no_intr_reshed
+ addk r5, r1, r0
+ addk r7, r0, r0
+ bralid r15, do_signal
+ addk r6, r0, r0
+
+no_intr_reshed:
+ /* save mode indicator */
+ lwi r11, r1, PT_MODE
+3:
+ swi r11, r0, PER_CPU(KM)
+
+ /* save r31 */
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+restore_context:
+ /* special purpose registers */
+ lwi r11, r1, PT_FSR
+ mts rfsr, r11
+ lwi r11, r1, PT_ESR
+ mts resr, r11
+ lwi r11, r1, PT_EAR
+ mts rear, r11
+ lwi r11, r1, PT_MSR
+ mts rmsr, r11
+
+ lwi r31, r1, PT_R31
+ lwi r30, r1, PT_R30
+ lwi r29, r1, PT_R29
+ lwi r28, r1, PT_R28
+ lwi r27, r1, PT_R27
+ lwi r26, r1, PT_R26
+ lwi r25, r1, PT_R25
+ lwi r24, r1, PT_R24
+ lwi r23, r1, PT_R23
+ lwi r22, r1, PT_R22
+ lwi r21, r1, PT_R21
+ lwi r20, r1, PT_R20
+ lwi r19, r1, PT_R19
+ lwi r18, r1, PT_R18
+ lwi r17, r1, PT_R17
+ lwi r16, r1, PT_R16
+ lwi r15, r1, PT_R15
+ lwi r14, r1, PT_PC
+ lwi r13, r1, PT_R13
+ lwi r12, r1, PT_R12
+ lwi r11, r1, PT_R11
+ lwi r10, r1, PT_R10
+ lwi r9, r1, PT_R9
+ lwi r8, r1, PT_R8
+ lwi r7, r1, PT_R7
+ lwi r6, r1, PT_R6
+ lwi r5, r1, PT_R5
+ lwi r4, r1, PT_R4
+ lwi r3, r1, PT_R3
+ lwi r2, r1, PT_R2
+ lwi r1, r1, PT_R1
+ rtid r14, 0
+ nop
+
+ENTRY(_reset)
+ brai 0;
+
+ENTRY(_user_exception)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+ beqid r11, 1f /* Already in kernel mode? */
+ nop
+ brid 2f /* jump over */
+ addik r1, r1, (-PT_SIZE) /* Room for pt_regs (delay slot) */
+1: /* Switch to kernel stack */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ /* calculate kernel stack pointer */
+ addik r1, r1, THREAD_SIZE - PT_SIZE
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+2:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ /* save them on stack */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
+ swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ /* r12: _always_ in clobber list; see unistd.h */
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ /* r14: _always_ in clobber list; see unistd.h */
+ swi r14, r1, PT_R14
+ /* but we want to return to the next inst. */
+ addik r14, r14, 0x4
+ swi r14, r1, PT_PC /* increment by 4 and store in pc */
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+
+ disable_irq
+ nop /* make sure IE bit is in effect */
+ clear_bip /* once IE is in effect it is safe to clear BIP */
+ nop
+
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* re-enable interrupts now we are in kernel mode */
+ enable_irq
+
+ /* See if the system call number is valid. */
+ addi r11, r12, -NR_syscalls
+ bgei r11, 1f /* return to user if not valid */
+ /* Figure out which function to use for this system call. */
+ /* Note Microblaze barrel shift is optional, so don't rely on it */
+ add r12, r12, r12 /* convert num -> ptr */
+ add r12, r12, r12
+ lwi r12, r12, sys_call_table /* Get function pointer */
+ la r15, r0, ret_to_user-8 /* set return address */
+ bra r12 /* Make the system call. */
+ bri 0 /* won't reach here */
+1:
+ brid ret_to_user /* jump to syscall epilogue */
+ addi r3, r0, -ENOSYS /* set errno in delay slot */
+
+/*
+ * Debug traps are like a system call, but entered via brki r14, 0x60
+ * All we need to do is send the SIGTRAP signal to current, ptrace and do_signal
+ * will handle the rest
+ */
+ENTRY(_debug_exception)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ addik r1, r1, THREAD_SIZE - PT_SIZE /* get the kernel stack */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+//save_context:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ /* save them on stack */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
+ swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ /* r12: _always_ in clobber list; see unistd.h */
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ /* r14: _always_ in clobber list; see unistd.h */
+ swi r14, r1, PT_R14
+ swi r14, r1, PT_PC /* Will return to interrupted instruction */
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+
+ disable_irq
+ nop /* make sure IE bit is in effect */
+ clear_bip /* once IE is in effect it is safe to clear BIP */
+ nop
+
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* re-enable interrupts now we are in kernel mode */
+ enable_irq
+
+ addi r5, r0, SIGTRAP /* sending the trap signal */
+ add r6, r0, r31 /* to current */
+ bralid r15, send_sig
+ add r7, r0, r0 /* 3rd param zero */
+
+ /* Restore r3/r4 to work around how ret_to_user works */
+ lwi r3, r1, PT_R3
+ lwi r4, r1, PT_R4
+ bri ret_to_user
+
+ENTRY(_break)
+ bri 0
+
+/* struct task_struct *_switch_to(struct thread_info *prev,
+ struct thread_info *next); */
+ENTRY(_switch_to)
+ /* prepare return value */
+ addk r3, r0, r31
+
+ /* save registers in cpu_context */
+ /* use r11 and r12, volatile registers, as temp register */
+ addik r11, r5, TI_CPU_CONTEXT
+ swi r1, r11, CC_SP
+ swi r2, r11, CC_R2
+ /* skip volatile registers.
+ * they are saved on stack when we jumped to _switch_to() */
+ /* dedicated registers */
+ swi r13, r11, CC_R13
+ swi r14, r11, CC_R14
+ swi r15, r11, CC_R15
+ swi r16, r11, CC_R16
+ swi r17, r11, CC_R17
+ swi r18, r11, CC_R18
+ /* save non-volatile registers */
+ swi r19, r11, CC_R19
+ swi r20, r11, CC_R20
+ swi r21, r11, CC_R21
+ swi r22, r11, CC_R22
+ swi r23, r11, CC_R23
+ swi r24, r11, CC_R24
+ swi r25, r11, CC_R25
+ swi r26, r11, CC_R26
+ swi r27, r11, CC_R27
+ swi r28, r11, CC_R28
+ swi r29, r11, CC_R29
+ swi r30, r11, CC_R30
+ /* special purpose registers */
+ mfs r12, rmsr
+ swi r12, r11, CC_MSR
+ mfs r12, rear
+ swi r12, r11, CC_EAR
+ mfs r12, resr
+ swi r12, r11, CC_ESR
+ mfs r12, rfsr
+ swi r12, r11, CC_FSR
+
+ /* update r31, the current */
+ lwi r31, r6, TI_TASK
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+
+ /* get new process' cpu context and restore */
+ addik r11, r6, TI_CPU_CONTEXT
+
+ /* special purpose registers */
+ lwi r12, r11, CC_FSR
+ mts rfsr, r12
+ lwi r12, r11, CC_ESR
+ mts resr, r12
+ lwi r12, r11, CC_EAR
+ mts rear, r12
+ lwi r12, r11, CC_MSR
+ mts rmsr, r12
+ /* non-volatile registers */
+ lwi r30, r11, CC_R30
+ lwi r29, r11, CC_R29
+ lwi r28, r11, CC_R28
+ lwi r27, r11, CC_R27
+ lwi r26, r11, CC_R26
+ lwi r25, r11, CC_R25
+ lwi r24, r11, CC_R24
+ lwi r23, r11, CC_R23
+ lwi r22, r11, CC_R22
+ lwi r21, r11, CC_R21
+ lwi r20, r11, CC_R20
+ lwi r19, r11, CC_R19
+ /* dedicated registers */
+ lwi r18, r11, CC_R18
+ lwi r17, r11, CC_R17
+ lwi r16, r11, CC_R16
+ lwi r15, r11, CC_R15
+ lwi r14, r11, CC_R14
+ lwi r13, r11, CC_R13
+ /* skip volatile registers */
+ lwi r2, r11, CC_R2
+ lwi r1, r11, CC_SP
+
+ rtsd r15, 8
+ nop
+
+ENTRY(ret_from_fork)
+ addk r5, r0, r3
+ addk r6, r0, r1
+ brlid r15, schedule_tail
+ nop
+ swi r31, r1, PT_R31 /* save r31 in user context. */
+ /* will soon be restored to r31 in ret_to_user */
+ addk r3, r0, r0
+ brid ret_to_user
+ nop
+
+work_pending:
+ andi r11, r19, _TIF_NEED_RESCHED
+ beqi r11, 1f
+ bralid r15, schedule
+ nop
+1: andi r11, r19, _TIF_SIGPENDING
+ beqi r11, no_work_pending
+ addk r5, r1, r0
+ addik r7, r0, 1
+ bralid r15, do_signal
+ addk r6, r0, r0
+ bri no_work_pending
+
+ENTRY(ret_to_user)
+ disable_irq
+
+ swi r4, r1, PT_R4 /* return val */
+ swi r3, r1, PT_R3 /* return val */
+
+ lwi r6, r31, TS_THREAD_INFO /* get thread info */
+ lwi r19, r6, TI_FLAGS /* get flags in thread info */
+ bnei r19, work_pending /* do an extra work if any bits are set */
+no_work_pending:
+ disable_irq
+
+ /* save r31 */
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* save mode indicator */
+ lwi r18, r1, PT_MODE
+ swi r18, r0, PER_CPU(KM)
+//restore_context:
+ /* special purpose registers */
+ lwi r18, r1, PT_FSR
+ mts rfsr, r18
+ lwi r18, r1, PT_ESR
+ mts resr, r18
+ lwi r18, r1, PT_EAR
+ mts rear, r18
+ lwi r18, r1, PT_MSR
+ mts rmsr, r18
+
+ lwi r31, r1, PT_R31
+ lwi r30, r1, PT_R30
+ lwi r29, r1, PT_R29
+ lwi r28, r1, PT_R28
+ lwi r27, r1, PT_R27
+ lwi r26, r1, PT_R26
+ lwi r25, r1, PT_R25
+ lwi r24, r1, PT_R24
+ lwi r23, r1, PT_R23
+ lwi r22, r1, PT_R22
+ lwi r21, r1, PT_R21
+ lwi r20, r1, PT_R20
+ lwi r19, r1, PT_R19
+ lwi r18, r1, PT_R18
+ lwi r17, r1, PT_R17
+ lwi r16, r1, PT_R16
+ lwi r15, r1, PT_R15
+ lwi r14, r1, PT_PC
+ lwi r13, r1, PT_R13
+ lwi r12, r1, PT_R12
+ lwi r11, r1, PT_R11
+ lwi r10, r1, PT_R10
+ lwi r9, r1, PT_R9
+ lwi r8, r1, PT_R8
+ lwi r7, r1, PT_R7
+ lwi r6, r1, PT_R6
+ lwi r5, r1, PT_R5
+ lwi r4, r1, PT_R4 /* return val */
+ lwi r3, r1, PT_R3 /* return val */
+ lwi r2, r1, PT_R2
+ lwi r1, r1, PT_R1
+
+ rtid r14, 0
+ nop
+
+sys_vfork_wrapper:
+ brid sys_vfork
+ addk r5, r1, r0
+
+sys_clone_wrapper:
+ brid sys_clone
+ addk r7, r1, r0
+
+sys_execve_wrapper:
+ brid sys_execve
+ addk r8, r1, r0
+
+sys_sigreturn_wrapper:
+ brid sys_sigreturn
+ addk r5, r1, r0
+
+sys_rt_sigreturn_wrapper:
+ brid sys_rt_sigreturn
+ addk r5, r1, r0
+
+sys_sigsuspend_wrapper:
+ brid sys_rt_sigsuspend
+ addk r6, r1, r0
+
+sys_rt_sigsuspend_wrapper:
+ brid sys_rt_sigsuspend
+ addk r7, r1, r0
+
+ /* Interrupt vector table */
+ .section .init.ivt, "ax"
+ .org 0x0
+ brai _reset
+ brai _user_exception
+ brai _interrupt
+ brai _break
+ brai _hw_exception_handler
+ .org 0x60
+ brai _debug_exception
+
+.section .rodata,"a"
+#include "syscall_table.S"
+
+syscall_table_size=(.-sys_call_table)
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/head.S | 38 +++++++++
arch/microblaze/kernel/vmlinux.lds.S | 143 ++++++++++++++++++++++++++++++++++
2 files changed, 181 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/head.S
create mode 100644 arch/microblaze/kernel/vmlinux.lds.S
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
new file mode 100644
index 0000000..8f87626
--- /dev/null
+++ b/arch/microblaze/kernel/head.S
@@ -0,0 +1,38 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ */
+
+#include <linux/linkage.h>
+#include <asm/thread_info.h>
+
+ .text
+ENTRY(_start)
+ mfs r1, rmsr
+ andi r1, r1, ~2
+ mts rmsr, r1
+
+ /* Initialize small data anchors */
+ la r13, r0, _KERNEL_SDA_BASE_
+ la r2, r0, _KERNEL_SDA2_BASE_
+
+ /* Initialize stack pointer */
+ la r1, r0, init_thread_union + THREAD_SIZE - 4
+
+ /* Initialize r31 with current task address */
+ la r31, r0, init_task
+
+ /* Call platform dependent initialize function.
+ * Please see $(ARCH)/mach-$(SUBARCH)/setup.c for
+ * the function. */
+ la r8, r0, machine_early_init
+ brald r15, r8
+ nop
+
+ la r15, r0, machine_halt
+ braid start_kernel
+ nop
diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
new file mode 100644
index 0000000..f31e7ef
--- /dev/null
+++ b/arch/microblaze/kernel/vmlinux.lds.S
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
+OUTPUT_ARCH(microblaze)
+ENTRY(_start)
+
+#include <linux/autoconf.h>
+#include <asm-generic/vmlinux.lds.h>
+
+jiffies = jiffies_64 + 4;
+
+SECTIONS {
+ . = CONFIG_KERNEL_BASE_ADDR;
+
+ .text : {
+ _text = . ;
+ _stext = . ;
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ . = ALIGN (4) ;
+ _etext = . ;
+ }
+
+ . = ALIGN(16);
+ RODATA
+
+ /* sdata2 section can go anywhere, but must be word aligned
+ and SDA2_BASE must point to the middle of it */
+ .sdata2 : {
+ _ssrw = .;
+ . = ALIGN(0x8);
+ *(.sdata2)
+ . = ALIGN(8);
+ _essrw = .;
+ _ssrw_size = _essrw - _ssrw;
+ _KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
+ }
+
+ _sdata = . ;
+ .data ALIGN (0x4) : {
+ DATA_DATA
+ }
+ . = ALIGN(32);
+ .data.cacheline_aligned : { *(.data.cacheline_aligned) }
+ _edata = . ;
+
+ /* The initial task */
+ . = ALIGN(8192);
+ .data.init_task : { *(.data.init_task) }
+
+ /* Under the microblaze ABI, .sdata and .sbss must be contiguous */
+ . = ALIGN(8);
+ .sdata : {
+ _ssro = .;
+ *(.sdata)
+ }
+
+ .sbss : {
+ _ssbss = .;
+ *(.sbss)
+ _esbss = .;
+ _essro = .;
+ _ssro_size = _essro - _ssro ;
+ _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
+ }
+
+ . = ALIGN(16);
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ __init_begin = .;
+
+ . = ALIGN(4096);
+ .init.text : {
+ _sinittext = . ;
+ *(.init.text)
+ *(.exit.text)
+ *(.exit.data)
+ _einittext = .;
+ }
+
+ .init.data : { *(.init.data) }
+
+ . = ALIGN(4);
+ .init.ivt : {
+ __ivt_start = .;
+ *(.init.ivt)
+ __ivt_end = .;
+ }
+
+ .init.setup : {
+ __setup_start = .;
+ *(.init.setup)
+ __setup_end = .;
+ }
+
+ .initcall.init : {
+ __initcall_start = .;
+ INITCALLS
+ __initcall_end = .;
+ }
+
+ .con_initcall.init : {
+ __con_initcall_start = .;
+ *(.con_initcall.init)
+ __con_initcall_end = .;
+ }
+
+ __init_end_before_initramfs = .;
+
+ .init.ramfs ALIGN(4096) : {
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+ . = ALIGN(4);
+ LONG(0);
+ . = ALIGN(4096);/* Pad init.ramfs up to page boundary, so
+ that __init_end == __bss_start. This will
+ make image.elf consistent with the image.bin */
+ }
+
+ __init_end = .;
+
+ .bss ALIGN (4096) : {
+ __bss_start = . ;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN (4) ;
+ __bss_stop = . ;
+ _ebss = . ;
+ }
+ . = ALIGN(4096);
+ _end = .;
+}
+
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/dma-mapping.h | 1 +
include/asm-microblaze/dma.h | 18 ++++++++++++++++++
include/asm-microblaze/scatterlist.h | 26 ++++++++++++++++++++++++++
3 files changed, 45 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/dma-mapping.h
create mode 100644 include/asm-microblaze/dma.h
create mode 100644 include/asm-microblaze/scatterlist.h
diff --git a/include/asm-microblaze/dma-mapping.h b/include/asm-microblaze/dma-mapping.h
new file mode 100644
index 0000000..e7e1690
--- /dev/null
+++ b/include/asm-microblaze/dma-mapping.h
@@ -0,0 +1 @@
+#include <asm-generic/dma-mapping.h>
diff --git a/include/asm-microblaze/dma.h b/include/asm-microblaze/dma.h
new file mode 100644
index 0000000..6ab357b
--- /dev/null
+++ b/include/asm-microblaze/dma.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_DMA_H
+#define _ASM_MICROBLAZE_DMA_H
+
+/* we don't have dma address limit. define it as zero to be
+ * unlimited. */
+#define MAX_DMA_ADDRESS (0)
+
+#define ISA_DMA_THRESHOLD (0)
+
+#endif /* _ASM_MICROBLAZE_DMA_H */
diff --git a/include/asm-microblaze/scatterlist.h b/include/asm-microblaze/scatterlist.h
new file mode 100644
index 0000000..bbe73e6
--- /dev/null
+++ b/include/asm-microblaze/scatterlist.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SCATTERLIST_H
+#define _ASM_MICROBLAZE_SCATTERLIST_H
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+ unsigned long sg_magic;
+#endif
+ unsigned long page_link;
+ dma_addr_t dma_address;
+ unsigned int offset;
+ unsigned int length;
+};
+
+#define sg_dma_address(sg) ((sg)->dma_address)
+#define sg_dma_len(sg) ((sg)->length)
+
+#endif /* _ASM_MICROBLAZE_SCATTERLIST_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/io.h | 208 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 208 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/io.h
diff --git a/include/asm-microblaze/io.h b/include/asm-microblaze/io.h
new file mode 100644
index 0000000..cb0a178
--- /dev/null
+++ b/include/asm-microblaze/io.h
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_IO_H
+#define _ASM_MICROBLAZE_IO_H
+
+#include <asm/byteorder.h>
+#include <asm/page.h>
+
+static inline unsigned char __raw_readb(const volatile void *addr)
+{
+ return *(volatile unsigned char __force *)addr;
+}
+static inline unsigned short __raw_readw(const volatile void *addr)
+{
+ return *(volatile unsigned short __force *)addr;
+}
+static inline unsigned int __raw_readl(const volatile void *addr)
+{
+ return *(volatile unsigned int __force *)addr;
+}
+static inline unsigned long __raw_readq(const volatile void *addr)
+{
+ return *(volatile unsigned long __force *)addr;
+}
+static inline void __raw_writeb(unsigned char v, volatile void *addr)
+{
+ *(volatile unsigned char __force *)addr = v;
+}
+static inline void __raw_writew(unsigned short v, volatile void *addr)
+{
+ *(volatile unsigned short __force *)addr = v;
+}
+static inline void __raw_writel(unsigned int v, volatile void *addr)
+{
+ *(volatile unsigned int __force *)addr = v;
+}
+static inline void __raw_writeq(unsigned long v, volatile void *addr)
+{
+ *(volatile unsigned long __force *)addr = v;
+}
+
+/*
+ * read (readb, readw, readl, readq) and write (writeb, writew,
+ * writel, writeq) accessors are for PCI and thus littel endian.
+ * Linux 2.4 for Microblaze had this wrong.
+ */
+static inline unsigned char readb(const volatile void *addr)
+{
+ return *(volatile unsigned char __force *)addr;
+}
+static inline unsigned short readw(const volatile void *addr)
+{
+ return le16_to_cpu(*(volatile unsigned short __force *)addr);
+}
+static inline unsigned int readl(const volatile void *addr)
+{
+ return le32_to_cpu(*(volatile unsigned int __force *)addr);
+}
+static inline void writeb(unsigned char v, volatile void *addr)
+{
+ *(volatile unsigned char __force *)addr = v;
+}
+static inline void writew(unsigned short v, volatile void *addr)
+{
+ *(volatile unsigned short __force *)addr = cpu_to_le16(v);
+}
+static inline void writel(unsigned int v, volatile void __iomem *addr)
+{
+ *(volatile unsigned int __force *)addr = cpu_to_le32(v);
+}
+
+/* ioread and iowrite variants. thease are for now same as __raw_
+ * variants of accessors. we might check for endianess in the feature
+ */
+#define ioread8(addr) __raw_readb((u8 *)(addr))
+#define ioread16(addr) __raw_readw((u16 *)(addr))
+#define ioread32(addr) __raw_readl((u32 *)(addr))
+#define iowrite8(v, addr) __raw_writeb((u8)(v), (u8 *)(addr))
+#define iowrite16(v, addr) __raw_writew((u16)(v), (u16 *)(addr))
+#define iowrite32(v, addr) __raw_writel((u32)(v), (u32 *)(addr))
+
+/* These are the definitions for the x86 IO instructions
+ * inb/inw/inl/outb/outw/outl, the "string" versions
+ * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
+ * inb_p/inw_p/...
+ * The macros don't do byte-swapping.
+ */
+#define inb(port) readb((u8 *)((port)))
+#define outb(val, port) writeb((val), (u8 *)((unsigned long)(port)))
+#define inw(port) readw((u16 *)((port)))
+#define outw(val, port) writew((val), (u16 *)((unsigned long)(port)))
+#define inl(port) readl((u32 *)((port)))
+#define outl(val, port) writel((val), (u32 *)((unsigned long)(port)))
+
+#define inb_p(port) inb((port))
+#define outb_p(val, port) outb((val), (port))
+#define inw_p(port) inw((port))
+#define outw_p(val, port) outw((val), (port))
+#define inl_p(port) inl((port))
+#define outl_p(val, port) outl((val), (port))
+
+#define memset_io(a, b, c) memset((void *)(a), (b), (c))
+#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
+#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
+
+/**
+ * virt_to_phys - map virtual addresses to physical
+ * @address: address to remap
+ *
+ * The returned physical address is the physical (CPU) mapping for
+ * the memory address given. It is only valid to use this function on
+ * addresses directly mapped or allocated via kmalloc.
+ *
+ * This function does not give bus mappings for DMA transfers. In
+ * almost all conceivable cases a device driver should not be using
+ * this function
+ */
+static inline unsigned long __iomem virt_to_phys(volatile void *address)
+{
+ return __pa((unsigned long)address);
+}
+
+#define virt_to_bus virt_to_phys
+
+/**
+ * phys_to_virt - map physical address to virtual
+ * @address: address to remap
+ *
+ * The returned virtual address is a current CPU mapping for
+ * the memory address given. It is only valid to use this function on
+ * addresses that have a kernel mapping
+ *
+ * This function does not handle bus mappings for DMA transfers. In
+ * almost all conceivable cases a device driver should not be using
+ * this function
+ */
+static inline void *phys_to_virt(unsigned long address)
+{
+ return (void *)__va(address);
+}
+
+#define bus_to_virt(a) phys_to_virt(a)
+
+static inline void *__ioremap(unsigned long address, unsigned long size,
+ unsigned long flags)
+{
+ return (void *)address;
+}
+
+
+#define IO_SPACE_LIMIT ~(0UL)
+
+#define ioremap(physaddr, size) ((void *)(unsigned long)(physaddr))
+#define iounmap(addr) ((void)0)
+#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p) __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p) p
+
+/*
+ * Big Endian
+ */
+#define out_be32(a, v) __raw_writel((v), (a))
+#define out_be16(a, v) __raw_writew((v), (a))
+
+#define in_be32(a) __raw_readl(a)
+#define in_be16(a) __raw_readw(a)
+
+/*
+ * Little endian
+ */
+
+#define out_le32(a, v) __raw_writel(__cpu_to_le32(v), (a));
+#define out_le16(a, v) __raw_writew(__cpu_to_le16(v), (a))
+
+#define in_le32(a) __le32_to_cpu(__raw_readl(a))
+#define in_le16(a) __le16_to_cpu(__raw_readw(a))
+
+/* Byte ops */
+#define out_8(a, v) __raw_writeb((v), (a))
+#define in_8(a) __raw_readb(a)
+
+/* FIXME */
+static inline void __iomem *ioport_map(unsigned long port, unsigned int len)
+{
+ return (void __iomem *) (port);
+}
+
+static inline void ioport_unmap(void __iomem *addr)
+{
+ /* Nothing to do */
+}
+
+#endif /* _ASM_MICROBLAZE_IO_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/ipc.h | 1 +
include/asm-microblaze/ipcbuf.h | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/ipc.h
create mode 100644 include/asm-microblaze/ipcbuf.h
diff --git a/include/asm-microblaze/ipc.h b/include/asm-microblaze/ipc.h
new file mode 100644
index 0000000..a46e3d9
--- /dev/null
+++ b/include/asm-microblaze/ipc.h
@@ -0,0 +1 @@
+#include <asm-generic/ipc.h>
diff --git a/include/asm-microblaze/ipcbuf.h b/include/asm-microblaze/ipcbuf.h
new file mode 100644
index 0000000..b056fa4
--- /dev/null
+++ b/include/asm-microblaze/ipcbuf.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_IPCBUF_H
+#define _ASM_MICROBLAZE_IPCBUF_H
+
+/*
+ * The user_ipc_perm structure for microblaze architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 32-bit mode_t and seq
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct ipc64_perm {
+ __kernel_key_t key;
+ __kernel_uid32_t uid;
+ __kernel_gid32_t gid;
+ __kernel_uid32_t cuid;
+ __kernel_gid32_t cgid;
+ __kernel_mode_t mode;
+ unsigned short __pad1;
+ unsigned short seq;
+ unsigned short __pad2;
+ unsigned long __unused1;
+ unsigned long __unused2;
+};
+
+#endif /* _ASM_MICROBLAZE_IPCBUF_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/platform/generic/system.dts | 300 +++++++++++++++++++++++++++
1 files changed, 300 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/platform/generic/system.dts
diff --git a/arch/microblaze/platform/generic/system.dts b/arch/microblaze/platform/generic/system.dts
new file mode 100644
index 0000000..724a037
--- /dev/null
+++ b/arch/microblaze/platform/generic/system.dts
@@ -0,0 +1,300 @@
+/*
+ * (C) Copyright 2007-2008 Xilinx, Inc.
+ * (C) Copyright 2007-2008 Michal Simek
+ *
+ * Michal SIMEK <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * CAUTION: This file is automatically generated by libgen.
+ * Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
+ * Generate by FDT v1.00.a
+ */
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "xlnx,microblaze";
+ model = "testing";
+ DDR_SDRAM_32Mx16: memory@20000000 {
+ device_type = "memory";
+ reg = < 20000000 2000000 >;
+ } ;
+ chosen {
+ bootargs = "console=ttyUL0,115200 loglevel=15";
+ linux,stdout-path = "/plb@0/serial@40100000";
+ } ;
+ cpus {
+ #address-cells = <1>;
+ #cpus = <1>;
+ #size-cells = <0>;
+ microblaze_0: cpu@0 {
+ clock-frequency = <2faf080>;
+ compatible = "xlnx,microblaze-7.00.a";
+ d-cache-baseaddr = <20000000>;
+ d-cache-highaddr = <21ffffff>;
+ d-cache-line-size = <10>;
+ d-cache-size = <4000>;
+ device_type = "cpu";
+ i-cache-baseaddr = <20000000>;
+ i-cache-highaddr = <21ffffff>;
+ i-cache-line-size = <10>;
+ i-cache-size = <4000>;
+ model = "microblaze,7.00.a";
+ reg = <0>;
+ timebase-frequency = <2faf080>;
+ xlnx,addr-tag-bits = <b>;
+ xlnx,allow-dcache-wr = <1>;
+ xlnx,allow-icache-wr = <1>;
+ xlnx,area-optimized = <0>;
+ xlnx,cache-byte-size = <4000>;
+ xlnx,d-lmb = <1>;
+ xlnx,d-opb = <0>;
+ xlnx,d-plb = <1>;
+ xlnx,data-size = <20>;
+ xlnx,dcache-addr-tag = <b>;
+ xlnx,dcache-byte-size = <4000>;
+ xlnx,dcache-line-len = <4>;
+ xlnx,dcache-use-fsl = <1>;
+ xlnx,debug-enabled = <1>;
+ xlnx,div-zero-exception = <1>;
+ xlnx,dopb-bus-exception = <0>;
+ xlnx,dynamic-bus-sizing = <1>;
+ xlnx,edge-is-positive = <1>;
+ xlnx,family = "spartan3e";
+ xlnx,fpu-exception = <1>;
+ xlnx,fsl-data-size = <20>;
+ xlnx,fsl-exception = <0>;
+ xlnx,fsl-links = <1>;
+ xlnx,i-lmb = <1>;
+ xlnx,i-opb = <0>;
+ xlnx,i-plb = <1>;
+ xlnx,icache-line-len = <4>;
+ xlnx,icache-use-fsl = <1>;
+ xlnx,ill-opcode-exception = <1>;
+ xlnx,instance = "microblaze_0";
+ xlnx,interconnect = <1>;
+ xlnx,interrupt-is-edge = <0>;
+ xlnx,iopb-bus-exception = <0>;
+ xlnx,mmu-dtlb-size = <4>;
+ xlnx,mmu-itlb-size = <2>;
+ xlnx,mmu-tlb-access = <3>;
+ xlnx,mmu-zones = <2>;
+ xlnx,number-of-pc-brk = <2>;
+ xlnx,number-of-rd-addr-brk = <0>;
+ xlnx,number-of-wr-addr-brk = <0>;
+ xlnx,opcode-0x0-illegal = <1>;
+ xlnx,pvr = <2>;
+ xlnx,pvr-user1 = <12>;
+ xlnx,pvr-user2 = <12345678>;
+ xlnx,reset-msr = <0>;
+ xlnx,sco = <0>;
+ xlnx,unaligned-exceptions = <1>;
+ xlnx,use-barrel = <1>;
+ xlnx,use-dcache = <1>;
+ xlnx,use-div = <1>;
+ xlnx,use-extended-fsl-instr = <0>;
+ xlnx,use-fpu = <2>;
+ xlnx,use-hw-mul = <2>;
+ xlnx,use-icache = <1>;
+ xlnx,use-mmu = <3>;
+ xlnx,use-msr-instr = <1>;
+ xlnx,use-pcmp-instr = <1>;
+ } ;
+ } ;
+ mb_plb: plb@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "xlnx,plb-v46-1.00.a", "simple-bus";
+ ranges ;
+ Buttons_3Bit: gpio@40800000 {
+ compatible = "xlnx,xps-gpio-1.00.a";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 6 2 >;
+ reg = < 40800000 100000 >;
+ xlnx,all-inputs = <1>;
+ xlnx,all-inputs-2 = <0>;
+ xlnx,dout-default = <0>;
+ xlnx,dout-default-2 = <0>;
+ xlnx,family = "spartan3e";
+ xlnx,gpio-width = <3>;
+ xlnx,interrupt-present = <1>;
+ xlnx,is-bidir = <0>;
+ xlnx,is-bidir-2 = <1>;
+ xlnx,is-dual = <0>;
+ xlnx,tri-default = <ffffffff>;
+ xlnx,tri-default-2 = <ffffffff>;
+ } ;
+ Character_LCD_2x16: gpio@40900000 {
+ compatible = "xlnx,xps-gpio-1.00.a";
+ reg = < 40900000 100000 >;
+ xlnx,all-inputs = <0>;
+ xlnx,all-inputs-2 = <0>;
+ xlnx,dout-default = <0>;
+ xlnx,dout-default-2 = <0>;
+ xlnx,family = "spartan3e";
+ xlnx,gpio-width = <7>;
+ xlnx,interrupt-present = <0>;
+ xlnx,is-bidir = <1>;
+ xlnx,is-bidir-2 = <1>;
+ xlnx,is-dual = <0>;
+ xlnx,tri-default = <ffffffff>;
+ xlnx,tri-default-2 = <ffffffff>;
+ } ;
+ DIP_Switches_4Bit: gpio@40700000 {
+ compatible = "xlnx,xps-gpio-1.00.a";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 7 2 >;
+ reg = < 40700000 100000 >;
+ xlnx,all-inputs = <1>;
+ xlnx,all-inputs-2 = <0>;
+ xlnx,dout-default = <0>;
+ xlnx,dout-default-2 = <0>;
+ xlnx,family = "spartan3e";
+ xlnx,gpio-width = <4>;
+ xlnx,interrupt-present = <1>;
+ xlnx,is-bidir = <0>;
+ xlnx,is-bidir-2 = <1>;
+ xlnx,is-dual = <0>;
+ xlnx,tri-default = <ffffffff>;
+ xlnx,tri-default-2 = <ffffffff>;
+ } ;
+ Ethernet_MAC: ethernet@40c00000 {
+ compatible = "xlnx,xps-ethernetlite-1.00.a";
+ device_type = "network";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 2 0 >;
+ local-mac-address = [ 02 00 00 00 00 00 ];
+ reg = < 40c00000 100000 >;
+ xlnx,duplex = <1>;
+ xlnx,family = "spartan3e";
+ xlnx,rx-ping-pong = <0>;
+ xlnx,tx-ping-pong = <0>;
+ } ;
+ LEDs_8Bit: gpio@40600000 {
+ compatible = "xlnx,xps-gpio-1.00.a";
+ reg = < 40600000 100000 >;
+ xlnx,all-inputs = <0>;
+ xlnx,all-inputs-2 = <0>;
+ xlnx,dout-default = <0>;
+ xlnx,dout-default-2 = <0>;
+ xlnx,family = "spartan3e";
+ xlnx,gpio-width = <8>;
+ xlnx,interrupt-present = <0>;
+ xlnx,is-bidir = <0>;
+ xlnx,is-bidir-2 = <1>;
+ xlnx,is-dual = <0>;
+ xlnx,tri-default = <ffffffff>;
+ xlnx,tri-default-2 = <ffffffff>;
+ } ;
+ RS232_DCE: serial@40200000 {
+ clock-frequency = <2faf080>;
+ compatible = "xlnx,xps-uart16550-1.00.a", "ns16550";
+ current-speed = <2580>;
+ device_type = "serial";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 4 2 >;
+ reg = < 40200000 100000 >;
+ reg-offset = <3>;
+ reg-shift = <2>;
+ xlnx,family = "spartan3e";
+ xlnx,has-external-rclk = <0>;
+ xlnx,has-external-xin = <0>;
+ xlnx,is-a-16550 = <1>;
+ } ;
+ RS232_DTE: serial@40100000 {
+ clock-frequency = <2faf080>;
+ compatible = "xlnx,xps-uartlite-1.00.a";
+ device_type = "serial";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 3 0 >;
+ port-number = <0>;
+ reg = < 40100000 100000 >;
+ xlnx,baudrate = <1c200>;
+ xlnx,data-bits = <8>;
+ xlnx,family = "spartan3e";
+ xlnx,odd-parity = <0>;
+ xlnx,use-parity = <0>;
+ } ;
+ SPI_FLASH: xps-spi@40a00000 {
+ compatible = "xlnx,xps-spi-1.00.a";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 5 2 >;
+ reg = < 40a00000 100000 >;
+ xlnx,family = "spartan3e";
+ xlnx,fifo-exist = <1>;
+ xlnx,num-offchip-ss-bits = <4>;
+ xlnx,num-ss-bits = <4>;
+ xlnx,sck-ratio = <20>;
+ } ;
+ debug_module: debug@40300000 {
+ compatible = "xlnx,mdm-1.00.a";
+ reg = < 40300000 100000 >;
+ xlnx,family = "spartan3e";
+ xlnx,interconnect = <1>;
+ xlnx,jtag-chain = <2>;
+ xlnx,mb-dbg-ports = <1>;
+ xlnx,uart-width = <8>;
+ xlnx,use-uart = <1>;
+ xlnx,write-fsl-ports = <1>;
+ } ;
+ mpmc@20000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "xlnx,mpmc-3.00.a";
+ } ;
+ xps_intc_0: interrupt-controller@40000000 {
+ #interrupt-cells = <2>;
+ compatible = "xlnx,xps-intc-1.00.a";
+ interrupt-controller ;
+ reg = < 40000000 100000 >;
+ xlnx,kind-of-edge = <0>;
+ xlnx,num-intr-inputs = <8>;
+ } ;
+ xps_timer_0: timer@40400000 {
+ compatible = "xlnx,xps-timer-1.00.a";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 0 2 >;
+ reg = < 40400000 100000 >;
+ xlnx,count-width = <20>;
+ xlnx,family = "spartan3e";
+ xlnx,gen0-assert = <1>;
+ xlnx,gen1-assert = <1>;
+ xlnx,one-timer-only = <0>;
+ xlnx,trig0-assert = <1>;
+ xlnx,trig1-assert = <1>;
+ } ;
+ xps_timer_1: timer@40500000 {
+ compatible = "xlnx,xps-timer-1.00.a";
+ interrupt-parent = <&xps_intc_0>;
+ interrupts = < 1 2 >;
+ reg = < 40500000 100000 >;
+ xlnx,count-width = <20>;
+ xlnx,family = "spartan3e";
+ xlnx,gen0-assert = <1>;
+ xlnx,gen1-assert = <1>;
+ xlnx,one-timer-only = <1>;
+ xlnx,trig0-assert = <1>;
+ xlnx,trig1-assert = <1>;
+ } ;
+/* sysace_compactflash: sysace@d0030100 {
+ compatible = "xlnx,xps-sysace-1.00.a";
+ reg = < E0000000 100000 >;
+ xlnx,family = "spartan3e";
+ xlnx,mem-width = <10>;
+ } ;*/
+ } ;
+} ;
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/msgbuf.h | 39 ++++++++++++++++++++++++++++
include/asm-microblaze/shmbuf.h | 50 +++++++++++++++++++++++++++++++++++++
include/asm-microblaze/shmparam.h | 14 ++++++++++
3 files changed, 103 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/msgbuf.h
create mode 100644 include/asm-microblaze/shmbuf.h
create mode 100644 include/asm-microblaze/shmparam.h
diff --git a/include/asm-microblaze/msgbuf.h b/include/asm-microblaze/msgbuf.h
new file mode 100644
index 0000000..8172bc9
--- /dev/null
+++ b/include/asm-microblaze/msgbuf.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_MSGBUF_H
+#define _ASM_MICROBLAZE_MSGBUF_H
+
+/*
+ * The msqid64_ds structure for microblaze architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct msqid64_ds {
+ struct ipc64_perm msg_perm;
+ __kernel_time_t msg_stime; /* last msgsnd time */
+ unsigned long __unused1;
+ __kernel_time_t msg_rtime; /* last msgrcv time */
+ unsigned long __unused2;
+ __kernel_time_t msg_ctime; /* last change time */
+ unsigned long __unused3;
+ unsigned long msg_cbytes; /* current number of bytes on queue */
+ unsigned long msg_qnum; /* number of messages in queue */
+ unsigned long msg_qbytes; /* max number of bytes on queue */
+ __kernel_pid_t msg_lspid; /* pid of last msgsnd */
+ __kernel_pid_t msg_lrpid; /* last receive pid */
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+#endif /* _ASM_MICROBLAZE_MSGBUF_H */
diff --git a/include/asm-microblaze/shmbuf.h b/include/asm-microblaze/shmbuf.h
new file mode 100644
index 0000000..a460e36
--- /dev/null
+++ b/include/asm-microblaze/shmbuf.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SHMBUF_H
+#define _ASM_MICROBLAZE_SHMBUF_H
+
+/*
+ * The shmid64_ds structure for microblaze architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+ __kernel_time_t shm_atime; /* last attach time */
+ unsigned long __unused1;
+ __kernel_time_t shm_dtime; /* last detach time */
+ unsigned long __unused2;
+ __kernel_time_t shm_ctime; /* last change time */
+ unsigned long __unused3;
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+struct shminfo64 {
+ unsigned long shmmax;
+ unsigned long shmmin;
+ unsigned long shmmni;
+ unsigned long shmseg;
+ unsigned long shmall;
+ unsigned long __unused1;
+ unsigned long __unused2;
+ unsigned long __unused3;
+ unsigned long __unused4;
+};
+
+#endif /* _ASM_MICROBLAZE_SHMBUF_H */
diff --git a/include/asm-microblaze/shmparam.h b/include/asm-microblaze/shmparam.h
new file mode 100644
index 0000000..719bbed
--- /dev/null
+++ b/include/asm-microblaze/shmparam.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SHMPARAM_H
+#define _ASM_MICROBLAZE_SHMPARAM_H
+
+#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
+
+#endif /* _ASM_MICROBLAZE_SHMPARAM_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/clinkage.h | 27 +++++++++++++++++++++++++++
include/asm-microblaze/kmap_types.h | 29 +++++++++++++++++++++++++++++
include/asm-microblaze/linkage.h | 15 +++++++++++++++
include/asm-microblaze/sections.h | 21 +++++++++++++++++++++
4 files changed, 92 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/clinkage.h
create mode 100644 include/asm-microblaze/kmap_types.h
create mode 100644 include/asm-microblaze/linkage.h
create mode 100644 include/asm-microblaze/sections.h
diff --git a/include/asm-microblaze/clinkage.h b/include/asm-microblaze/clinkage.h
new file mode 100644
index 0000000..a2e09bd
--- /dev/null
+++ b/include/asm-microblaze/clinkage.h
@@ -0,0 +1,27 @@
+/*
+ * Macros to reflect C symbol-naming conventions
+ *
+ * Copyright (C) 2003 John Williams <[email protected]>
+ * Copyright (C) 2001,2002 NEC Corporatione
+ * Copyright (C) 2001,2002 Miles Bader <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <[email protected]>
+ * Microblaze port by John Williams
+ */
+
+#ifndef _ASM_MICROBLAZE_CLINKAGE_H
+#define _ASM_MICROBLAZE_CLINKAGE_H
+
+#define __ASSEMBLY__
+
+#include <linux/linkage.h>
+
+#define C_SYMBOL_NAME(name) name
+#define C_ENTRY(name) .globl name; .align 4; name
+#define C_END(name)
+
+#endif /* _ASM_MICROBLAZE_CLINKAGE_H */
diff --git a/include/asm-microblaze/kmap_types.h b/include/asm-microblaze/kmap_types.h
new file mode 100644
index 0000000..4d7e222
--- /dev/null
+++ b/include/asm-microblaze/kmap_types.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_KMAP_TYPES_H
+#define _ASM_MICROBLAZE_KMAP_TYPES_H
+
+enum km_type {
+ KM_BOUNCE_READ,
+ KM_SKB_SUNRPC_DATA,
+ KM_SKB_DATA_SOFTIRQ,
+ KM_USER0,
+ KM_USER1,
+ KM_BIO_SRC_IRQ,
+ KM_BIO_DST_IRQ,
+ KM_PTE0,
+ KM_PTE1,
+ KM_IRQ0,
+ KM_IRQ1,
+ KM_SOFTIRQ0,
+ KM_SOFTIRQ1,
+ KM_TYPE_NR,
+};
+
+#endif /* _ASM_MICROBLAZE_KMAP_TYPES_H */
diff --git a/include/asm-microblaze/linkage.h b/include/asm-microblaze/linkage.h
new file mode 100644
index 0000000..3a8e36d
--- /dev/null
+++ b/include/asm-microblaze/linkage.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_LINKAGE_H
+#define _ASM_MICROBLAZE_LINKAGE_H
+
+#define __ALIGN .align 4
+#define __ALIGN_STR ".align 4"
+
+#endif /* _ASM_MICROBLAZE_LINKAGE_H */
diff --git a/include/asm-microblaze/sections.h b/include/asm-microblaze/sections.h
new file mode 100644
index 0000000..d0c12fd
--- /dev/null
+++ b/include/asm-microblaze/sections.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SECTIONS_H
+#define _ASM_MICROBLAZE_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+extern char _ssbss[], _esbss[];
+extern unsigned long __ivt_start[], __ivt_end[];
+
+#ifdef CONFIG_MTD_UCLINUX
+extern char *_ebss;
+#endif
+
+#endif /* _ASM_MICROBLAZE_SECTIONS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/Kbuild | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/Kbuild
diff --git a/include/asm-microblaze/Kbuild b/include/asm-microblaze/Kbuild
new file mode 100644
index 0000000..783296d
--- /dev/null
+++ b/include/asm-microblaze/Kbuild
@@ -0,0 +1,24 @@
+include include/asm-generic/Kbuild.asm
+
+header-y += auxvec.h
+header-y += cpuinfo.h
+header-y += errno.h
+header-y += fcntl.h
+header-y += ioctl.h
+header-y += ioctls.h
+header-y += ipcbuf.h
+header-y += linkage.h
+header-y += mman.h
+header-y += msgbuf.h
+header-y += poll.h
+header-y += resource.h
+header-y += sembuf.h
+header-y += shmbuf.h
+header-y += sigcontext.h
+header-y += siginfo.h
+header-y += socket.h
+header-y += sockios.h
+header-y += statfs.h
+header-y += stat.h
+header-y += termbits.h
+header-y += ucontext.h
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/semaphore.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/semaphore.h
diff --git a/include/asm-microblaze/semaphore.h b/include/asm-microblaze/semaphore.h
new file mode 100644
index 0000000..d9b2034
--- /dev/null
+++ b/include/asm-microblaze/semaphore.h
@@ -0,0 +1 @@
+#include <linux/semaphore.h>
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/kvm.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/kvm.h
diff --git a/include/asm-microblaze/kvm.h b/include/asm-microblaze/kvm.h
new file mode 100644
index 0000000..01c5e79
--- /dev/null
+++ b/include/asm-microblaze/kvm.h
@@ -0,0 +1 @@
+/* Microblaze does not support KVM */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/of_device.c | 42 +++++++++++++++++++++++++++++++++++
arch/microblaze/platform/platform.c | 31 +++++++++++++++++++++++++
2 files changed, 73 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/of_device.c
create mode 100644 arch/microblaze/platform/platform.c
diff --git a/arch/microblaze/kernel/of_device.c b/arch/microblaze/kernel/of_device.c
new file mode 100644
index 0000000..984d066
--- /dev/null
+++ b/arch/microblaze/kernel/of_device.c
@@ -0,0 +1,42 @@
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+
+#include <asm/errno.h>
+
+void of_device_make_bus_id(struct of_device *dev)
+{
+ static atomic_t bus_no_reg_magic;
+ struct device_node *node = dev->node;
+ char *name = dev->dev.bus_id;
+ const u32 *reg;
+ u64 addr;
+ int magic;
+
+ /*
+ * For MMIO, get the physical address
+ */
+ reg = of_get_property(node, "reg", NULL);
+ if (reg) {
+ addr = of_translate_address(node, reg);
+ if (addr != OF_BAD_ADDR) {
+ snprintf(name, BUS_ID_SIZE,
+ "%llx.%s", (unsigned long long)addr,
+ node->name);
+ return;
+ }
+ }
+
+ /*
+ * No BusID, use the node name and add a globally incremented
+ * counter (and pray...)
+ */
+ magic = atomic_add_return(1, &bus_no_reg_magic);
+ snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
+}
+EXPORT_SYMBOL(of_device_make_bus_id);
diff --git a/arch/microblaze/platform/platform.c b/arch/microblaze/platform/platform.c
new file mode 100644
index 0000000..fa0edaf
--- /dev/null
+++ b/arch/microblaze/platform/platform.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2008 Michal Simek <[email protected]>
+ *
+ * based on virtex.c file
+ *
+ * Copyright 2007 Secret Lab Technologies Ltd.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <asm/prom.h>
+
+static struct of_device_id xilinx_of_bus_ids[] __initdata = {
+ { .compatible = "simple-bus", },
+ { .compatible = "xlnx,plb-v46-1.00.a", },
+ { .compatible = "xlnx,opb-v20-1.10.c", },
+ { .compatible = "xlnx,opb-v20-1.10.b", },
+ { .compatible = "xlnx,compound", },
+ {}
+};
+
+int __init microblaze_device_probe(void)
+{
+ of_platform_bus_probe(NULL, xilinx_of_bus_ids, NULL);
+ return 0;
+}
+device_initcall(microblaze_device_probe);
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/early_printk.c | 130 +++++++++++++++++++++++++++++++++
1 files changed, 130 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/early_printk.c
diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
new file mode 100644
index 0000000..6da0fd9
--- /dev/null
+++ b/arch/microblaze/kernel/early_printk.c
@@ -0,0 +1,130 @@
+/*
+ * Early printk support for Microblaze.
+ *
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2003-2006 Yasushi SHOJI <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+/* FIXME Once we got some system without uart light, we need to refactor */
+
+#include <linux/console.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/fcntl.h>
+#include <asm/setup.h>
+
+#ifdef CONFIG_EARLY_PRINTK
+#define BASE_ADDR ((unsigned char *)CONFIG_EARLY_PRINTK_UARTLITE_ADDRESS)
+
+#define RX_FIFO BASE_ADDR
+#define TX_FIFO ((unsigned long *)(BASE_ADDR + 4))
+#define STATUS ((unsigned long *)(BASE_ADDR + 8))
+#define CONTROL ((unsigned long *)(BASE_ADDR + 12))
+
+static void early_printk_putc(char c)
+{
+ /*
+ * Limit how many times we'll spin waiting for TX FIFO status.
+ * This will prevent lockups if the base address is incorrectly
+ * set, or any other issue on the UARTLITE.
+ * This limit is pretty arbitrary, unless we are at about 10 baud
+ * we'll never timeout on a working UART.
+ */
+
+ unsigned retries = 10000;
+ while (retries-- && (ioread32(STATUS) & (1<<3)))
+ ;
+
+ /* Only attempt the iowrite if we didn't timeout */
+ if (retries)
+ iowrite32((c & 0xff), TX_FIFO);
+}
+
+static void early_printk_write(struct console *unused,
+ const char *s, unsigned n)
+{
+ while (*s && n-- > 0) {
+ early_printk_putc(*s);
+ if (*s == '\n')
+ early_printk_putc('\r');
+ s++;
+ }
+}
+
+static struct console early_serial_console = {
+ .name = "earlyser",
+ .write = early_printk_write,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+/* Direct interface for emergencies */
+static struct console *early_console = &early_serial_console;
+static int early_console_initialized;
+
+void early_printk(const char *fmt, ...)
+{
+ char buf[512];
+ int n;
+ va_list ap;
+
+ if (early_console_initialized) {
+ va_start(ap, fmt);
+ n = vscnprintf(buf, 512, fmt, ap);
+ early_console->write(early_console, buf, n);
+ va_end(ap);
+ }
+}
+
+static int __initdata keep_early;
+
+int __init setup_early_printk(char *opt)
+{
+ char *space;
+ char buf[256];
+
+ if (early_console_initialized)
+ return 1;
+
+ strlcpy(buf, opt, sizeof(buf));
+ space = strchr(buf, ' ');
+ if (space)
+ *space = 0;
+
+ if (strstr(buf, "keep"))
+ keep_early = 1;
+
+ early_console = &early_serial_console;
+ early_console_initialized = 1;
+ register_console(early_console);
+ return 0;
+}
+#if 0
+static void __init disable_early_printk(void)
+{
+ if (!early_console_initialized || !early_console)
+ return;
+ if (!keep_early) {
+ printk(KERN_INFO "disabling early console\n");
+ unregister_console(early_console);
+ early_console_initialized = 0;
+ } else
+ printk(KERN_INFO "keeping early console\n");
+}
+#endif
+
+__setup("earlyprintk=", setup_early_printk);
+
+#else
+void early_printk(const char *fmt, ...)
+{
+}
+#endif
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/Makefile | 63 +++++++++++++++++++++++++++++
arch/microblaze/boot/Makefile | 17 ++++++++
arch/microblaze/kernel/Makefile | 17 ++++++++
arch/microblaze/kernel/cpu/Makefile | 8 ++++
arch/microblaze/lib/Makefile | 5 ++
arch/microblaze/mm/Makefile | 5 ++
arch/microblaze/platform/Makefile | 6 +++
arch/microblaze/platform/generic/Makefile | 3 +
8 files changed, 124 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/Makefile
create mode 100644 arch/microblaze/boot/Makefile
create mode 100644 arch/microblaze/kernel/Makefile
create mode 100644 arch/microblaze/kernel/cpu/Makefile
create mode 100644 arch/microblaze/lib/Makefile
create mode 100644 arch/microblaze/mm/Makefile
create mode 100644 arch/microblaze/platform/Makefile
create mode 100644 arch/microblaze/platform/generic/Makefile
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
new file mode 100644
index 0000000..7e9e1b4
--- /dev/null
+++ b/arch/microblaze/Makefile
@@ -0,0 +1,63 @@
+UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
+
+# What CPU vesion are we building for, and crack it open
+# as major.minor.rev
+CPU_VER=$(subst ",,$(CONFIG_XILINX_MICROBLAZE0_HW_VER) )
+CPU_MAJOR=$(shell echo $(CPU_VER) | cut -d '.' -f 1)
+CPU_MINOR=$(shell echo $(CPU_VER) | cut -d '.' -f 2)
+CPU_REV=$(shell echo $(CPU_VER) | cut -d '.' -f 3)
+
+export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
+
+# Use cpu-related CONFIG_ vars to set compile options.
+
+# Work out HW multipler support. This is icky.
+# 1. Spartan2 has no HW multiplers.
+# 2. MicroBlaze v3.x always uses them, except in Spartan 2
+# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
+ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
+ ifeq ($(CPU_MAJOR),3)
+ CPUFLAGS-1 += -mno-xl-soft-mul
+ else
+ # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
+ CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
+ CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
+ endif
+endif
+CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
+CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
+CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
+
+CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
+
+# The various CONFIG_XILINX cpu features options are integers 0/1/2...
+# rather than bools y/n
+CFLAGS += $(CPUFLAGS-1)
+CFLAGS += $(CPUFLAGS-2)
+
+# r31 holds current when in kernel mode
+CFLAGS += -ffixed-r31
+
+LDFLAGS_BLOB := --format binary --oformat elf32-microblaze
+
+LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+
+head-y := arch/microblaze/kernel/head.o
+libs-y += arch/microblaze/lib/ $(LIBGCC)
+core-y += arch/microblaze/kernel/ arch/microblaze/mm/ \
+ arch/microblaze/platform/
+
+boot := arch/$(ARCH)/boot
+
+all: linux.bin
+
+archclean:
+ $(Q)$(MAKE) $(clean)=$(boot)
+
+linux.bin linux.bin.gz: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+define archhelp
+ echo '* linux.bin - Create raw binary'
+ echo ' linux.bin.gz - Create compressed raw binary'
+endef
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
new file mode 100644
index 0000000..844edf4
--- /dev/null
+++ b/arch/microblaze/boot/Makefile
@@ -0,0 +1,17 @@
+#
+# arch/microblaze/boot/Makefile
+#
+
+targets := linux.bin linux.bin.gz
+
+OBJCOPYFLAGS_linux.bin := -O binary
+
+$(obj)/linux.bin: vmlinux FORCE
+ $(call if_changed,objcopy)
+ @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+$(obj)/linux.bin.gz: $(obj)/linux.bin FORCE
+ $(call if_changed,gzip)
+ @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+clean-kernel += linux.bin linux.bin.gz
diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile
new file mode 100644
index 0000000..f7a6bb8
--- /dev/null
+++ b/arch/microblaze/kernel/Makefile
@@ -0,0 +1,17 @@
+#
+# Makefile
+#
+
+extra-y := head.o vmlinux.lds
+
+obj-y += entry.o exceptions.o \
+ hw_exception_handler.o init_task.o intc.o irq.o of_device.o \
+ process.o prom.o ptrace.o \
+ setup.o signal.o sys_microblaze.o timer.o traps.o
+
+obj-y += cpu/
+
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+obj-$(CONFIG_SELFMOD) += selfmod.o
+obj-$(CONFIG_HEART_BEAT) += heartbeat.o
+obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o
diff --git a/arch/microblaze/kernel/cpu/Makefile b/arch/microblaze/kernel/cpu/Makefile
new file mode 100644
index 0000000..20646e5
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/Makefile
@@ -0,0 +1,8 @@
+#
+# Build the appropriate CPU version support
+#
+
+EXTRA_CFLAGS += -DCPU_MAJOR=$(CPU_MAJOR) -DCPU_MINOR=$(CPU_MINOR) \
+ -DCPU_REV=$(CPU_REV)
+
+obj-y += cache.o cpuinfo.o cpuinfo-pvr-full.o cpuinfo-static.o mb.o pvr.o
diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile
new file mode 100644
index 0000000..f0c36ff
--- /dev/null
+++ b/arch/microblaze/lib/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile
+#
+
+lib-y := memcpy.o memmove.o memset.o uaccess.o
diff --git a/arch/microblaze/mm/Makefile b/arch/microblaze/mm/Makefile
new file mode 100644
index 0000000..bf9e447
--- /dev/null
+++ b/arch/microblaze/mm/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile
+#
+
+obj-y := init.o
diff --git a/arch/microblaze/platform/Makefile b/arch/microblaze/platform/Makefile
new file mode 100644
index 0000000..ea1b75c
--- /dev/null
+++ b/arch/microblaze/platform/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for arch/microblaze/platform directory
+#
+#obj-$(CONFIG_PLATFORM_GENERIC) += generic/
+
+obj-y += platform.o
diff --git a/arch/microblaze/platform/generic/Makefile b/arch/microblaze/platform/generic/Makefile
new file mode 100644
index 0000000..9a8b1bd
--- /dev/null
+++ b/arch/microblaze/platform/generic/Makefile
@@ -0,0 +1,3 @@
+#
+# Empty Makefile to keep make clean happy
+#
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/cpu/mb.c | 115 ++++++++++++++++++++++++++++++++++++++
arch/microblaze/kernel/cpu/pvr.c | 81 ++++++++++++++++++++++++++
2 files changed, 196 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/cpu/mb.c
create mode 100644 arch/microblaze/kernel/cpu/pvr.c
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
new file mode 100644
index 0000000..0124112
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -0,0 +1,115 @@
+/*
+ * CPU-version specific code
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2006 PetaLogix
+ */
+
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/seq_file.h>
+#include <linux/cpu.h>
+#include <linux/initrd.h>
+
+#include <asm/cpuinfo.h>
+#include <asm/setup.h>
+#include <asm/sections.h>
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/bug.h>
+#include <asm/param.h>
+#include <asm/delay.h>
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+ int count = 0;
+ char *fpga_family = "Unknown";
+ char *cpu_ver = "Unknown";
+ int i;
+ printk("%s\n", __func__);
+
+ /* Denormalised to get the fpga family string */
+ for (i = 0; family_string_lookup[i].s != NULL; i++) {
+ if (cpuinfo.fpga_family_code == family_string_lookup[i].k) {
+ fpga_family = (char *)family_string_lookup[i].s;
+ break;
+ }
+ }
+
+ /* Denormalised to get the hw version string */
+ for (i = 0; cpu_ver_lookup[i].s != NULL; i++) {
+ if (cpuinfo.ver_code == cpu_ver_lookup[i].k) {
+ cpu_ver = (char *)cpu_ver_lookup[i].s;
+ break;
+ }
+ }
+
+ count = seq_printf(m,
+ "CPU-Family: MicroBlaze\n"
+ "FPGA-Arch: %s\n"
+ "CPU-Ver: %s\n"
+ "CPU-MHz: %d.%02d\n"
+ "BogoMips: %lu.%02lu\n",
+ fpga_family,
+ cpu_ver,
+ cpuinfo.cpu_clock_freq /
+ 1000000,
+ cpuinfo.cpu_clock_freq %
+ 1000000,
+ loops_per_jiffy / (500000 / HZ),
+ (loops_per_jiffy / (5000 / HZ)) % 100);
+
+ count += seq_printf(m,
+ "HW-Div:\t\t%s\n"
+ "HW-Shift:\t%s\n",
+ cpuinfo.use_divider ? "yes" : "no",
+ cpuinfo.use_barrel ? "yes" : "no");
+
+ if (cpuinfo.use_icache)
+ count += seq_printf(m,
+ "Icache:\t\t%ukB\n",
+ cpuinfo.icache_size >> 10);
+ else
+ count += seq_printf(m, "Icache:\t\tno\n");
+
+ if (cpuinfo.use_dcache)
+ count += seq_printf(m,
+ "Dcache:\t\t%ukB\n",
+ cpuinfo.dcache_size >> 10);
+ else
+ count += seq_printf(m, "Dcache:\t\tno\n");
+
+ count += seq_printf(m,
+ "HW-Debug:\t%s\n",
+ cpuinfo.hw_debug ? "yes" : "no");
+
+ return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+ int i = *pos;
+
+ return i < NR_CPUS ? (void *) (i + 1) : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ ++*pos;
+ return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+struct seq_operations cpuinfo_op = {
+ .start = c_start,
+ .next = c_next,
+ .stop = c_stop,
+ .show = show_cpuinfo,
+};
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
new file mode 100644
index 0000000..0b117bd
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/pvr.c
@@ -0,0 +1,81 @@
+/*
+ * Support for MicroBlaze PVR (processor version register)
+ *
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <asm/system.h>
+#include <asm/exceptions.h>
+#include <asm/pvr.h>
+
+/*
+ * Until we get an assembler that knows about the pvr registers,
+ * this horrible cruft will have to do.
+ * That hardcoded opcode is mfs r3, rpvrNN
+ */
+
+#define get_single_pvr(pvrid, val) \
+{ \
+ register unsigned tmp __asm__("r3"); \
+ tmp = 0x0; /* Prevent warning about unused */ \
+ __asm__ __volatile__ ( \
+ ".byte 0x94,0x60,0xa0, " #pvrid "\n\t" \
+ : "=r" (tmp):: "memory"); \
+ val = tmp; \
+}
+
+/*
+ * Does the CPU support the PVR register?
+ * return value:
+ * 0: no PVR
+ * 1: simple PVR
+ * 2: full PVR
+ *
+ * This must work on all CPU versions, including those before the
+ * PVR was even an option.
+ */
+
+int cpu_has_pvr(void)
+{
+ unsigned flags;
+ unsigned pvr0;
+
+ local_save_flags(flags);
+
+ /* PVR bit in MSR tells us if there is any support */
+ if (!(flags & PVR_MSR_BIT))
+ return 0;
+
+ get_single_pvr(0x00, pvr0);
+ pr_debug("%s: pvr0 is 0x%08x\n", __func__, pvr0);
+
+ if (pvr0 & PVR0_PVR_FULL_MASK)
+ return 1;
+
+ /* for partial PVR use static cpuinfo */
+ return 2;
+}
+
+void get_pvr(struct pvr_s *p)
+{
+ get_single_pvr(0, p->pvr[0]);
+ get_single_pvr(1, p->pvr[1]);
+ get_single_pvr(2, p->pvr[2]);
+ get_single_pvr(3, p->pvr[3]);
+ get_single_pvr(4, p->pvr[4]);
+ get_single_pvr(5, p->pvr[5]);
+ get_single_pvr(6, p->pvr[6]);
+ get_single_pvr(7, p->pvr[7]);
+ get_single_pvr(8, p->pvr[8]);
+ get_single_pvr(9, p->pvr[9]);
+ get_single_pvr(10, p->pvr[10]);
+ get_single_pvr(11, p->pvr[11]);
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/asm-offsets.c | 116 ++++++++++++++++++++++++++++++++++
1 files changed, 116 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/asm-offsets.c
diff --git a/arch/microblaze/kernel/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
new file mode 100644
index 0000000..522f8ff
--- /dev/null
+++ b/arch/microblaze/kernel/asm-offsets.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2007 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/ptrace.h>
+#include <linux/hardirq.h>
+#include <linux/thread_info.h>
+
+#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+#define BLANK() asm volatile("\n->" : :)
+
+int main(int argc, char *argv[])
+{
+ /* struct pt_regs */
+ DEFINE(PT_SIZE, sizeof(struct pt_regs));
+ DEFINE(PT_MSR, offsetof(struct pt_regs, msr));
+ DEFINE(PT_EAR, offsetof(struct pt_regs, ear));
+ DEFINE(PT_ESR, offsetof(struct pt_regs, esr));
+ DEFINE(PT_FSR, offsetof(struct pt_regs, fsr));
+ DEFINE(PT_PC, offsetof(struct pt_regs, pc));
+ DEFINE(PT_R0, offsetof(struct pt_regs, r0));
+ DEFINE(PT_R1, offsetof(struct pt_regs, r1));
+ DEFINE(PT_R2, offsetof(struct pt_regs, r2));
+ DEFINE(PT_R3, offsetof(struct pt_regs, r3));
+ DEFINE(PT_R4, offsetof(struct pt_regs, r4));
+ DEFINE(PT_R5, offsetof(struct pt_regs, r5));
+ DEFINE(PT_R6, offsetof(struct pt_regs, r6));
+ DEFINE(PT_R7, offsetof(struct pt_regs, r7));
+ DEFINE(PT_R8, offsetof(struct pt_regs, r8));
+ DEFINE(PT_R9, offsetof(struct pt_regs, r9));
+ DEFINE(PT_R10, offsetof(struct pt_regs, r10));
+ DEFINE(PT_R11, offsetof(struct pt_regs, r11));
+ DEFINE(PT_R12, offsetof(struct pt_regs, r12));
+ DEFINE(PT_R13, offsetof(struct pt_regs, r13));
+ DEFINE(PT_R14, offsetof(struct pt_regs, r14));
+ DEFINE(PT_R15, offsetof(struct pt_regs, r15));
+ DEFINE(PT_R16, offsetof(struct pt_regs, r16));
+ DEFINE(PT_R17, offsetof(struct pt_regs, r17));
+ DEFINE(PT_R18, offsetof(struct pt_regs, r18));
+ DEFINE(PT_R19, offsetof(struct pt_regs, r19));
+ DEFINE(PT_R20, offsetof(struct pt_regs, r20));
+ DEFINE(PT_R21, offsetof(struct pt_regs, r21));
+ DEFINE(PT_R22, offsetof(struct pt_regs, r22));
+ DEFINE(PT_R23, offsetof(struct pt_regs, r23));
+ DEFINE(PT_R24, offsetof(struct pt_regs, r24));
+ DEFINE(PT_R25, offsetof(struct pt_regs, r25));
+ DEFINE(PT_R26, offsetof(struct pt_regs, r26));
+ DEFINE(PT_R27, offsetof(struct pt_regs, r27));
+ DEFINE(PT_R28, offsetof(struct pt_regs, r28));
+ DEFINE(PT_R29, offsetof(struct pt_regs, r29));
+ DEFINE(PT_R30, offsetof(struct pt_regs, r30));
+ DEFINE(PT_R31, offsetof(struct pt_regs, r31));
+ DEFINE(PT_MODE, offsetof(struct pt_regs, kernel_mode));
+ BLANK();
+
+ /* Magic offsets for PTRACE PEEK/POKE etc */
+ DEFINE(PT_TEXT_ADDR, sizeof(struct pt_regs) + 1);
+ DEFINE(PT_TEXT_LEN, sizeof(struct pt_regs) + 2);
+ DEFINE(PT_DATA_ADDR, sizeof(struct pt_regs) + 3);
+ BLANK();
+
+ /* struct task_struct */
+ DEFINE(TS_THREAD_INFO, offsetof(struct task_struct, stack));
+
+ /* struct thread_info */
+ DEFINE(TI_TASK, offsetof(struct thread_info, task));
+ DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain));
+ DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
+ DEFINE(TI_STATUS, offsetof(struct thread_info, status));
+ DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
+ DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));
+ DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit));
+ DEFINE(TI_RESTART_BLOCK, offsetof(struct thread_info, restart_block));
+ DEFINE(TI_CPU_CONTEXT, offsetof(struct thread_info, cpu_context));
+ BLANK();
+
+ /* struct cpu_context */
+ DEFINE(CC_SP, offsetof(struct cpu_context, r1)); /* r1 */
+ DEFINE(CC_R2, offsetof(struct cpu_context, r2));
+ /* dedicated registers */
+ DEFINE(CC_R13, offsetof(struct cpu_context, r13));
+ DEFINE(CC_R14, offsetof(struct cpu_context, r14));
+ DEFINE(CC_R15, offsetof(struct cpu_context, r15));
+ DEFINE(CC_R16, offsetof(struct cpu_context, r16));
+ DEFINE(CC_R17, offsetof(struct cpu_context, r17));
+ DEFINE(CC_R18, offsetof(struct cpu_context, r18));
+ /* non-volatile registers */
+ DEFINE(CC_R19, offsetof(struct cpu_context, r19));
+ DEFINE(CC_R20, offsetof(struct cpu_context, r20));
+ DEFINE(CC_R21, offsetof(struct cpu_context, r21));
+ DEFINE(CC_R22, offsetof(struct cpu_context, r22));
+ DEFINE(CC_R23, offsetof(struct cpu_context, r23));
+ DEFINE(CC_R24, offsetof(struct cpu_context, r24));
+ DEFINE(CC_R25, offsetof(struct cpu_context, r25));
+ DEFINE(CC_R26, offsetof(struct cpu_context, r26));
+ DEFINE(CC_R27, offsetof(struct cpu_context, r27));
+ DEFINE(CC_R28, offsetof(struct cpu_context, r28));
+ DEFINE(CC_R29, offsetof(struct cpu_context, r29));
+ DEFINE(CC_R30, offsetof(struct cpu_context, r30));
+ /* special purpose registers */
+ DEFINE(CC_MSR, offsetof(struct cpu_context, msr));
+ DEFINE(CC_EAR, offsetof(struct cpu_context, ear));
+ DEFINE(CC_ESR, offsetof(struct cpu_context, esr));
+ DEFINE(CC_FSR, offsetof(struct cpu_context, fsr));
+ BLANK();
+
+ return 0;
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/setup.c | 187 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 187 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/setup.c
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
new file mode 100644
index 0000000..95d6eae
--- /dev/null
+++ b/arch/microblaze/kernel/setup.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/seq_file.h>
+#include <linux/cpu.h>
+#include <linux/initrd.h>
+#include <linux/console.h>
+#include <linux/debugfs.h>
+
+#include <asm/setup.h>
+#include <asm/sections.h>
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/bug.h>
+#include <asm/param.h>
+#include <asm/cache.h>
+#include <asm/cacheflush.h>
+#include <asm/entry.h>
+#include <asm/cpuinfo.h>
+
+#include <asm/system.h>
+#include <asm/prom.h>
+#include <asm/pgtable.h>
+
+DEFINE_PER_CPU(unsigned int, KSP); /* Saved kernel stack pointer */
+DEFINE_PER_CPU(unsigned int, KM); /* Kernel/user mode */
+DEFINE_PER_CPU(unsigned int, ENTRY_SP); /* Saved SP on kernel entry */
+DEFINE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */
+DEFINE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */
+
+int have_of = 1;
+unsigned int boot_cpuid;
+char cmd_line[COMMAND_LINE_SIZE];
+static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
+
+void __init setup_arch(char **cmdline_p)
+{
+ console_verbose();
+
+ unflatten_device_tree();
+ /* NOTE I think that this function is not necessary to call */
+ /* irq_early_init(); */
+ setup_cpuinfo();
+
+ __invalidate_icache_all();
+ __enable_icache();
+
+ __invalidate_dcache_all();
+ __enable_dcache();
+
+ panic_timeout = 120;
+
+ setup_memory();
+ paging_init();
+
+#if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER)
+ printk(KERN_NOTICE "Self modified code enable\n");
+#endif
+
+#ifdef CONFIG_VT
+#if defined(CONFIG_XILINX_CONSOLE)
+ conswitchp = &xil_con;
+#elif defined(CONFIG_DUMMY_CONSOLE)
+ conswitchp = &dummy_con;
+#endif
+#endif
+}
+
+#ifdef CONFIG_MTD_UCLINUX
+/* Handle both romfs and cramfs types, without generating unnecessary
+ code (ie no point checking for CRAMFS if it's not even enabled) */
+inline unsigned get_romfs_len(unsigned *addr)
+{
+#ifdef CONFIG_ROMFS_FS
+ if (memcmp(&addr[0], "-rom1fs-", 8) == 0) /* romfs */
+ return be32_to_cpu(addr[2]);
+#endif
+
+#ifdef CONFIG_CRAMFS
+ if (addr[0] == le32_to_cpu(0x28cd3d45)) /* cramfs */
+ return le32_to_cpu(addr[1]);
+#endif
+ return 0;
+}
+#endif /* CONFIG_MTD_UCLINUX_EBSS */
+
+void __init machine_early_init(const char *cmdline, unsigned int ram,
+ unsigned int fdt)
+{
+ unsigned long *src, *dst = (unsigned long *)0x0;
+ early_printk("Ramdisk addr 0x%08x, FDT 0x%08x\n", ram, fdt);
+
+#ifdef CONFIG_MTD_UCLINUX
+ {
+ int size;
+ unsigned int romfs_base;
+ romfs_base = (ram ? ram : (unsigned int)&__init_end);
+ /* if CONFIG_MTD_UCLINUX_EBSS is defined, assume ROMFS is at the
+ * end of kernel, which is ROMFS_LOCATION defined above. */
+ size = PAGE_ALIGN(get_romfs_len((unsigned *)romfs_base));
+ early_printk("Found romfs @ 0x%08x (0x%08x)\n",
+ romfs_base, size);
+ early_printk("#### klimit %p ####\n", klimit);
+ BUG_ON(size < 0); /* What else can we do? */
+
+ /* Use memmove to handle likely case of memory overlap */
+ early_printk("Moving 0x%08x bytes from 0x%08x to 0x%08x\n",
+ size, romfs_base, (unsigned)&_ebss);
+ memmove(&_ebss, (int *)romfs_base, size);
+
+ /* update klimit */
+ klimit += PAGE_ALIGN(size);
+ early_printk("New klimit: 0x%08x\n", (unsigned)klimit);
+ }
+#endif
+
+ memset(__bss_start, 0, __bss_stop-__bss_start);
+ memset(_ssbss, 0, _esbss-_ssbss);
+
+ printk(KERN_NOTICE "Found FDT at 0x%08x\n", fdt);
+ early_init_devtree((void *)fdt);
+
+ /* Copy command line passed from bootloader, or use default
+ if none provided, or forced */
+#ifndef CONFIG_CMDLINE_FORCE
+ if (cmdline && cmdline[0] != '\0')
+ strlcpy(cmd_line, cmdline, COMMAND_LINE_SIZE);
+ else
+#endif
+ strlcpy(cmd_line, default_command_line, COMMAND_LINE_SIZE);
+
+ for (src = __ivt_start; src < __ivt_end; src++, dst++)
+ *dst = *src;
+
+ /* Initialize global data */
+ per_cpu(KM, 0) = 0x1; /* We start in kernel mode */
+ per_cpu(CURRENT_SAVE, 0) = (unsigned long)current;
+}
+
+#ifdef CONFIG_DEBUG_FS
+struct dentry *of_debugfs_root;
+
+static int microblaze_debugfs_init(void)
+{
+ of_debugfs_root = debugfs_create_dir("microblaze", NULL);
+
+ return of_debugfs_root == NULL;
+}
+arch_initcall(microblaze_debugfs_init);
+#endif
+
+void machine_restart(char *cmd)
+{
+ printk(KERN_NOTICE "Machine restart...\n");
+ dump_stack();
+ while (1)
+ ;
+}
+
+void machine_shutdown(void)
+{
+ printk(KERN_NOTICE "Machine shutdown...\n");
+ while (1)
+ ;
+}
+
+void machine_halt(void)
+{
+ printk(KERN_NOTICE "Machine halt...\n");
+ while (1)
+ ;
+}
+
+void machine_power_off(void)
+{
+ printk(KERN_NOTICE "Machine power off...\n");
+ while (1)
+ ;
+}
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/microblaze_ksyms.c | 47 ++++++++++
arch/microblaze/kernel/module.c | 140 +++++++++++++++++++++++++++++
include/asm-microblaze/module.h | 37 ++++++++
3 files changed, 224 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/microblaze_ksyms.c
create mode 100644 arch/microblaze/kernel/module.c
create mode 100644 include/asm-microblaze/module.h
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
new file mode 100644
index 0000000..297cd68
--- /dev/null
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2008 Michal Simek <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/cryptohash.h>
+#include <linux/delay.h>
+#include <linux/in6.h>
+#include <linux/syscalls.h>
+
+#include <asm/checksum.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+/*
+ * libgcc functions - functions that are used internally by the
+ * compiler... (prototypes are not correct though, but that
+ * doesn't really matter since they're not versioned).
+ */
+extern void __ashldi3(void);
+EXPORT_SYMBOL(__ashldi3);
+extern void __ashrdi3(void);
+EXPORT_SYMBOL(__ashrdi3);
+extern void __divsi3(void);
+EXPORT_SYMBOL(__divsi3);
+extern void __lshrdi3(void);
+EXPORT_SYMBOL(__lshrdi3);
+extern void __modsi3(void);
+EXPORT_SYMBOL(__modsi3);
+extern void __mulsi3(void);
+EXPORT_SYMBOL(__mulsi3);
+extern void __muldi3(void);
+EXPORT_SYMBOL(__muldi3);
+extern void __ucmpdi2(void);
+EXPORT_SYMBOL(__ucmpdi2);
+extern void __udivsi3(void);
+EXPORT_SYMBOL(__udivsi3);
+extern void __umodsi3(void);
+EXPORT_SYMBOL(__umodsi3);
+/*extern void fpundefinstr(void);
+extern void fp_enter(void);*/
diff --git a/arch/microblaze/kernel/module.c b/arch/microblaze/kernel/module.c
new file mode 100644
index 0000000..a59b2e5
--- /dev/null
+++ b/arch/microblaze/kernel/module.c
@@ -0,0 +1,140 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/module.h>
+#include <linux/moduleloader.h>
+#include <linux/kernel.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+
+#include <asm/pgtable.h>
+
+#undef DEBUG
+
+void *module_alloc(unsigned long size)
+{
+ void *ret;
+ ret = (size == 0) ? NULL : vmalloc(size);
+ pr_debug("module_alloc (%08lx@%08lx)\n", size, (unsigned long int)ret);
+ return ret;
+}
+
+void module_free(struct module *module, void *region)
+{
+ pr_debug("module_free(%s,%08lx)\n", module->name,
+ (unsigned long)region);
+ vfree(region);
+}
+
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+ Elf_Shdr *sechdrs,
+ char *secstrings,
+ struct module *mod)
+{
+ return 0;
+}
+
+int apply_relocate(Elf32_Shdr *sechdrs, const char *strtab,
+ unsigned int symindex, unsigned int relsec, struct module *module)
+{
+
+ printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n",
+ module->name);
+ return -ENOEXEC;
+
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
+ unsigned int symindex, unsigned int relsec, struct module *module)
+{
+
+ unsigned int i;
+ Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
+ Elf32_Sym *sym;
+ unsigned long int *location;
+ unsigned long int locoffs;
+ unsigned long int value;
+ unsigned long int old_value;
+
+ pr_debug("Applying add relocation section %u to %u\n",
+ relsec, sechdrs[relsec].sh_info);
+
+ for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) {
+
+ location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr +
+ rela[i].r_offset;
+ sym = (Elf32_Sym *)sechdrs[symindex].sh_addr +
+ ELF32_R_SYM(rela[i].r_info);
+ value = sym->st_value + rela[i].r_addend;
+
+ switch (ELF32_R_TYPE(rela[i].r_info)) {
+
+ /*
+ * Be careful! mb-gcc / mb-ld splits the relocs between the
+ * text and the reloc table. In general this means we must
+ * read the current contents of (*location), add any offset
+ * then store the result back in
+ */
+
+ case R_MICROBLAZE_32:
+ old_value = *location;
+ *location = value + old_value;
+ pr_debug("R_MICROBLAZE_32 (%08lx->%08lx)\n",
+ old_value, value);
+ break;
+
+ case R_MICROBLAZE_64:
+ old_value = ((location[0] & 0x0000FFFF) << 16) |
+ ((location[1] & 0x0000FFFF));
+ value += old_value;
+ location[0] = (location[0] & 0xFFFF0000) |
+ (value >> 16);
+ location[1] = (location[1] & 0xFFFF0000) |
+ (value & 0xFFFF);
+ pr_debug("R_MICROBLAZE_64 (%08lx->%08lx)\n",
+ old_value, value);
+ break;
+
+ case R_MICROBLAZE_64_PCREL:
+ locoffs = (location[0] & 0xFFFF) << 16 |
+ (location[1] & 0xFFFF);
+ value -= (unsigned long int)(location) + 4 +
+ locoffs;
+ location[0] = (location[0] & 0xFFFF0000) |
+ (value >> 16);
+ location[1] = (location[1] & 0xFFFF0000) |
+ (value & 0xFFFF);
+ pr_debug("R_MICROBLAZE_64_PCREL (%08lx)\n",
+ value);
+ break;
+
+ case R_MICROBLAZE_NONE:
+ pr_debug("R_MICROBLAZE_NONE\n");
+ break;
+
+ default:
+ printk(KERN_ERR "module %s: "
+ "Unknown relocation: %u\n",
+ module->name,
+ ELF32_R_TYPE(rela->r_info));
+ return -ENOEXEC;
+ }
+ }
+ return 0;
+}
+
+int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
+ struct module *module)
+{
+ return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}
diff --git a/include/asm-microblaze/module.h b/include/asm-microblaze/module.h
new file mode 100644
index 0000000..914565a
--- /dev/null
+++ b/include/asm-microblaze/module.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_MODULE_H
+#define _ASM_MICROBLAZE_MODULE_H
+
+/* Microblaze Relocations */
+#define R_MICROBLAZE_NONE 0
+#define R_MICROBLAZE_32 1
+#define R_MICROBLAZE_32_PCREL 2
+#define R_MICROBLAZE_64_PCREL 3
+#define R_MICROBLAZE_32_PCREL_LO 4
+#define R_MICROBLAZE_64 5
+#define R_MICROBLAZE_32_LO 6
+#define R_MICROBLAZE_SRO32 7
+#define R_MICROBLAZE_SRW32 8
+#define R_MICROBLAZE_64_NONE 9
+#define R_MICROBLAZE_32_SYM_OP_SYM 10
+/* Keep this the last entry. */
+#define R_MICROBLAZE_NUM 11
+
+struct mod_arch_specific {
+ int foo;
+};
+
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Ehdr Elf32_Ehdr
+
+typedef struct { volatile int counter; } module_t;
+
+#endif /* _ASM_MICROBLAZE_MODULE_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/Kconfig | 157 +++++++++++++++++++++++++
arch/microblaze/Kconfig.debug | 39 ++++++
arch/microblaze/platform/Kconfig.platform | 77 ++++++++++++
arch/microblaze/platform/generic/Kconfig.auto | 62 ++++++++++
4 files changed, 335 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/Kconfig
create mode 100644 arch/microblaze/Kconfig.debug
create mode 100644 arch/microblaze/platform/Kconfig.platform
create mode 100644 arch/microblaze/platform/generic/Kconfig.auto
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
new file mode 100644
index 0000000..0e9545b
--- /dev/null
+++ b/arch/microblaze/Kconfig
@@ -0,0 +1,157 @@
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+
+mainmenu "Linux/Microblaze Kernel Configuration"
+
+config MICROBLAZE
+ def_bool y
+ select HAVE_LMB
+
+config MMU
+ def_bool n
+
+config SWAP
+ def_bool n
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+config RWSEM_XCHGADD_ALGORITHM
+ bool
+
+config ARCH_HAS_ILOG2_U32
+ def_bool n
+
+config ARCH_HAS_ILOG2_U64
+ def_bool n
+
+config GENERIC_FIND_NEXT_BIT
+ def_bool y
+
+config GENERIC_HWEIGHT
+ def_bool y
+
+config GENERIC_HARDIRQS
+ def_bool y
+
+config GENERIC_IRQ_PROBE
+ def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+ def_bool y
+
+config GENERIC_TIME
+ def_bool y
+
+config PCI
+ def_bool n
+
+config NO_DMA
+ def_bool y
+
+config GENERIC_CSUM
+ def_bool y
+
+config HZ
+ int
+ default 100
+
+config DEFCONFIG_LIST
+ string
+ default "arch/$ARCH/defconfig"
+
+source "init/Kconfig"
+
+source "arch/microblaze/platform/Kconfig.platform"
+
+menu "Processor type and features"
+
+config PREEMPT
+ bool "Preemptible Kernel"
+ help
+ This option reduces the latency of the kernel when reacting to
+ real-time or interactive events by allowing a low priority process to
+ be preempted even if it is in kernel mode executing a system call.
+ This allows applications to run more reliably even when the system is
+ under load.
+
+ Say Y here if you are building a kernel for a desktop, embedded
+ or real-time system. Say N if you are unsure.
+
+config PREEMPT_TIMES
+ bool "Collect preemption latency times"
+ depends on PREEMPT
+ help
+ Allow collection for preemption latency times.
+
+config LARGE_ALLOCS
+ bool "Allow allocating large blocks (> 1MB) of memory"
+ help
+ Allow the slab memory allocator to keep chains for very large
+ memory sizes - up to 32MB. You may need this if your system has
+ a lot of RAM, and you need to able to allocate very large
+ contiguous chunks. If unsure, say N.
+
+config GENERIC_CLOCKEVENTS
+ bool "Clockevents - enable"
+ default n
+ help
+ clock events
+
+comment "Boot options"
+
+config CMDLINE
+ string "Default kernel command string"
+ default ""
+ help
+ On some architectures there is currently no way for the boot loader
+ to pass arguments to the kernel. For these architectures, you should
+ supply some command-line options at build time by entering them
+ here.
+
+config CMDLINE_FORCE
+ bool "Force default kernel command string"
+ help
+ Set this to have arguments from the default kernel command string
+ override those passed by the boot loader.
+
+config OF
+ def_bool y
+
+config OF_DEVICE
+ def_bool y
+
+config PROC_DEVICETREE
+ bool "Support for device tree in /proc"
+ depends on PROC_FS
+ help
+ This option adds a device-tree directory under /proc which contains
+ an image of the device tree that the kernel copies from Open
+ Firmware or other boot firmware. If unsure, say Y here.
+
+endmenu
+
+config APM_EMULATION
+ bool
+
+source "mm/Kconfig"
+
+menu "Exectuable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/microblaze/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
diff --git a/arch/microblaze/Kconfig.debug b/arch/microblaze/Kconfig.debug
new file mode 100644
index 0000000..611ef00
--- /dev/null
+++ b/arch/microblaze/Kconfig.debug
@@ -0,0 +1,39 @@
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+
+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+config EARLY_PRINTK
+ bool "Early printk function for kernel"
+ default n
+ help
+ This option turns on/off early printk messages to console.
+
+config EARLY_PRINTK_UARTLITE_ADDRESS
+ hex "Physical address where UART Lite for early printk is mapped"
+ depends on EARLY_PRINTK
+ default "0x00000000"
+ help
+ Please enter physical address where your uart lite is mapped.
+
+config HEART_BEAT
+ bool "Heart beat function for kernel"
+ default n
+ help
+ This option turns on/off heart beat kernel functionality on selected
+ GPIO address.
+
+config HEART_BEAT_ADDRESS
+ hex "Physical address for heart beat LED"
+ depends on HEART_BEAT
+ default "0x00000000"
+ help
+ Please enter physical address GPIO LED.
+
+config DEBUG_BOOTMEM
+ depends on DEBUG_KERNEL
+ bool "Debug BOOTMEM initialization"
+
+endmenu
diff --git a/arch/microblaze/platform/Kconfig.platform b/arch/microblaze/platform/Kconfig.platform
new file mode 100644
index 0000000..2789f92
--- /dev/null
+++ b/arch/microblaze/platform/Kconfig.platform
@@ -0,0 +1,77 @@
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+# Platform selection Kconfig menu for MicroBlaze targets
+#
+
+menu "Platform options"
+choice
+ prompt "Platform"
+ default PLATFORM_MICROBLAZE_AUTO
+ help
+ Choose which hardware board/platform you are targeting.
+
+config PLATFORM_GENERIC
+ bool "Generic"
+ help
+ Choose this option for the Generic platform.
+
+endchoice
+
+config SELFMOD
+ bool "Use self modified code for intc/timer"
+ depends on EXPERIMENTAL
+ default n
+ help
+ This choice enables self-modified code for interrupt controller
+ and timer.
+
+config SELFMOD_INTC
+ bool "Use self modified code for intc"
+ depends on SELFMOD
+ default y
+ help
+ This choice enables self-modified code for interrupt controller.
+
+config SELFMOD_TIMER
+ bool "Use self modified code for timer"
+ depends on SELFMOD
+ default y
+ help
+ This choice enables self-modified code for timer.
+
+config OPT_LIB_FUNCTION
+ bool "Optimalized lib function"
+ default y
+ help
+ Allows turn on optimalized library function (memcpy and memmove).
+ They are optimized by using word alignment. This will work
+ fine if both source and destination are aligned on the same
+ boundary. However, if they are aligned on different boundaries
+ shifts will be necessary. This might result in bad performance
+ on MicroBlaze systems without a barrel shifter.
+
+# This is still a bit broken - disabling for now JW 20070504
+config ALLOW_EDIT_AUTO
+ bool "Permit Display/edit of Kconfig.auto platform settings"
+ default n
+ help
+ Allows the editing of auto-generated platform settings from
+ the Kconfig.auto file. Obviously this does not change the
+ underlying hardware, so be very careful if you go editing
+ these settings.
+
+ Also, if you enable this, and edit various Kconfig.auto
+ settings, YOUR CHANGES WILL BE LOST if you then disable it
+ again. You have been warned!
+
+ If unsure, say no.
+
+comment "Automatic platform settings from Kconfig.auto"
+ depends on ALLOW_EDIT_AUTO
+
+if PLATFORM_GENERIC=y
+ source "arch/microblaze/platform/generic/Kconfig.auto"
+endif
+
+endmenu
diff --git a/arch/microblaze/platform/generic/Kconfig.auto b/arch/microblaze/platform/generic/Kconfig.auto
new file mode 100644
index 0000000..bc1983e
--- /dev/null
+++ b/arch/microblaze/platform/generic/Kconfig.auto
@@ -0,0 +1,62 @@
+#
+# (C) Copyright 2007 Michal Simek
+#
+# Michal SIMEK <[email protected]>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+# CAUTION: This file is automatically generated by libgen.
+# Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
+# Generate by U-BOOT v4.00.c
+#
+
+# Definitions for MICROBLAZE0
+comment "Definitions for MICROBLAZE0"
+ depends on ALLOW_EDIT_AUTO
+
+config KERNEL_BASE_ADDR
+ hex "Physical address where Linux Kernel is"
+ default "0x20000000"
+ help
+ BASE Address for kernel
+
+config XILINX_MICROBLAZE0_FAMILY
+ string "Targetted FPGA family" if ALLOW_EDIT_AUTO
+ default spartan3e
+
+config XILINX_MICROBLAZE0_USE_MSR_INSTR
+ int "USE_MSR_INSTR" if ALLOW_EDIT_AUTO
+ default 1
+
+config XILINX_MICROBLAZE0_USE_BARREL
+ int "USE_BARREL range (0:1)" if ALLOW_EDIT_AUTO
+ default 1
+
+config XILINX_MICROBLAZE0_USE_DIV
+ int "USE_DIV range (0:1)" if ALLOW_EDIT_AUTO
+ default 1
+
+config XILINX_MICROBLAZE0_USE_HW_MULT
+ int "USE_HW_MULT range (0:1)" if ALLOW_EDIT_AUTO
+ default 2
+
+config XILINX_MICROBLAZE0_USE_FPU
+ int "USE_FPU range (0:1)" if ALLOW_EDIT_AUTO
+ default 2
+
+config XILINX_MICROBLAZE0_HW_VER
+ string "Core version number" if ALLOW_EDIT_AUTO
+ default 7.00.a
--
1.5.4.GIT
> +++ b/include/asm-generic/termbits.h
> @@ -0,0 +1,200 @@
> +/* c_cflag bit meaning */
> +
> +#define CBAUD 0010017
> +#define B0 0000000 /* hang up */
You need BOTHER in here as well - especially if it is going to be generic.
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
include/asm-microblaze/elf.h | 22 ++++++++++
include/asm-microblaze/flat.h | 90 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 112 insertions(+), 0 deletions(-)
create mode 100644 include/asm-microblaze/elf.h
create mode 100644 include/asm-microblaze/flat.h
diff --git a/include/asm-microblaze/elf.h b/include/asm-microblaze/elf.h
new file mode 100644
index 0000000..a9f2ecf
--- /dev/null
+++ b/include/asm-microblaze/elf.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_ELF_H
+#define _ASM_MICROBLAZE_ELF_H
+
+#define EM_XILINX_MICROBLAZE 0xbaab
+#define ELF_ARCH EM_XILINX_MICROBLAZE
+
+#define elf_check_arch(x) ((x)->e_machine == EM_XILINX_MICROBLAZE)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS ELFCLASS32
+
+#endif /* _ASM_MICROBLAZE_ELF_H */
diff --git a/include/asm-microblaze/flat.h b/include/asm-microblaze/flat.h
new file mode 100644
index 0000000..acf0da5
--- /dev/null
+++ b/include/asm-microblaze/flat.h
@@ -0,0 +1,90 @@
+/*
+ * uClinux flat-format executables
+ *
+ * Copyright (C) 2005 John Williams <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_FLAT_H
+#define _ASM_MICROBLAZE_FLAT_H
+
+#include <asm/unaligned.h>
+
+#define flat_stack_align(sp) /* nothing needed */
+#define flat_argvp_envp_on_stack() 0
+#define flat_old_ram_flag(flags) (flags)
+#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
+#define flat_set_persistent(relval, p) 0
+
+/*
+ * Microblaze works a little differently from other arches, because
+ * of the MICROBLAZE_64 reloc type. Here, a 32 bit address is split
+ * over two instructions, an 'imm' instruction which provides the top
+ * 16 bits, then the instruction "proper" which provides the low 16
+ * bits.
+ */
+
+/*
+ * Crack open a symbol reference and extract the address to be
+ * relocated. rp is a potentially unaligned pointer to the
+ * reference
+ */
+
+static inline unsigned long
+flat_get_addr_from_rp(unsigned long *rp, unsigned long relval,
+ unsigned long flags, unsigned long *persistent)
+{
+ unsigned long addr;
+ (void)flags;
+
+ /* Is it a split 64/32 reference? */
+ if (relval & 0x80000000) {
+ /* Grab the two halves of the reference */
+ unsigned long val_hi, val_lo;
+
+ val_hi = get_unaligned(rp);
+ val_lo = get_unaligned(rp+1);
+
+ /* Crack the address out */
+ addr = ((val_hi & 0xffff) << 16) + (val_lo & 0xffff);
+ } else {
+ /* Get the address straight out */
+ addr = get_unaligned(rp);
+ }
+
+ return addr;
+}
+
+/*
+ * Insert an address into the symbol reference at rp. rp is potentially
+ * unaligned.
+ */
+
+static inline void
+flat_put_addr_at_rp(unsigned long *rp, unsigned long addr, unsigned long relval)
+{
+ /* Is this a split 64/32 reloc? */
+ if (relval & 0x80000000) {
+ /* Get the two "halves" */
+ unsigned long val_hi = get_unaligned(rp);
+ unsigned long val_lo = get_unaligned(rp + 1);
+
+ /* insert the address */
+ val_hi = (val_hi & 0xffff0000) | addr >> 16;
+ val_lo = (val_lo & 0xffff0000) | (addr & 0xffff);
+
+ /* store the two halves back into memory */
+ put_unaligned(val_hi, rp);
+ put_unaligned(val_lo, rp+1);
+ } else {
+ /* Put it straight in, no messing around */
+ put_unaligned(addr, rp);
+ }
+}
+
+#define flat_get_relocate_addr(rel) (rel & 0x7fffffff)
+
+#endif /* _ASM_MICROBLAZE_FLAT_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c | 84 ++++++++++++++++++
arch/microblaze/kernel/cpu/cpuinfo-static.c | 115 +++++++++++++++++++++++++
arch/microblaze/kernel/cpu/cpuinfo.c | 85 ++++++++++++++++++
include/asm-microblaze/cpuinfo.h | 110 +++++++++++++++++++++++
4 files changed, 394 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
create mode 100644 arch/microblaze/kernel/cpu/cpuinfo-static.c
create mode 100644 arch/microblaze/kernel/cpu/cpuinfo.c
create mode 100644 include/asm-microblaze/cpuinfo.h
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
new file mode 100644
index 0000000..aff07ef
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -0,0 +1,84 @@
+/*
+ * Support for MicroBlaze PVR (processor version register)
+ *
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/autoconf.h>
+#include <asm/pvr.h>
+#include <asm/cpuinfo.h>
+
+/*
+ * Helper macro to map between fields in our struct cpuinfo, and
+ * the PVR macros in pvr.h.
+ */
+
+#define CI(c, p) ci->c = PVR_##p(pvr)
+
+void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
+{
+ struct pvr_s pvr;
+ get_pvr(&pvr);
+
+ CI(use_barrel, USE_BARREL);
+ CI(use_divider, USE_DIV);
+ CI(use_mult, USE_HW_MUL);
+ CI(use_fpu, USE_FPU);
+
+ CI(use_mul_64, USE_MUL64);
+ CI(use_msr_instr, USE_MSR_INSTR);
+ CI(use_pcmp_instr, USE_PCMP_INSTR);
+ CI(ver_code, VERSION);
+
+ CI(use_icache, USE_ICACHE);
+ CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
+ CI(icache_write, ICACHE_ALLOW_WR);
+ CI(icache_line, ICACHE_LINE_LEN);
+ CI(icache_size, ICACHE_BYTE_SIZE);
+ CI(icache_base, ICACHE_BASEADDR);
+ CI(icache_high, ICACHE_HIGHADDR);
+
+ CI(use_dcache, USE_DCACHE);
+ CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS);
+ CI(dcache_write, DCACHE_ALLOW_WR);
+ CI(dcache_line, DCACHE_LINE_LEN);
+ CI(dcache_size, DCACHE_BYTE_SIZE);
+ CI(dcache_base, DCACHE_BASEADDR);
+ CI(dcache_high, DCACHE_HIGHADDR);
+
+ CI(use_dopb, D_OPB);
+ CI(use_iopb, I_OPB);
+ CI(use_dlmb, D_LMB);
+ CI(use_ilmb, I_LMB);
+ CI(num_fsl, FSL_LINKS);
+
+ CI(irq_edge, INTERRUPT_IS_EDGE);
+ CI(irq_positive, EDGE_IS_POSITIVE);
+
+ CI(area_optimised, AREA_OPTIMISED);
+ CI(opcode_0_illegal, OPCODE_0x0_ILLEGAL);
+ CI(exc_unaligned, UNALIGNED_EXCEPTION);
+ CI(exc_ill_opcode, ILL_OPCODE_EXCEPTION);
+ CI(exc_iopb, IOPB_BUS_EXCEPTION);
+ CI(exc_dopb, DOPB_BUS_EXCEPTION);
+ CI(exc_div_zero, DIV_ZERO_EXCEPTION);
+ CI(exc_fpu, FPU_EXCEPTION);
+
+ CI(hw_debug, DEBUG_ENABLED);
+ CI(num_pc_brk, NUMBER_OF_PC_BRK);
+ CI(num_rd_brk, NUMBER_OF_RD_ADDR_BRK);
+ CI(num_wr_brk, NUMBER_OF_WR_ADDR_BRK);
+
+ CI(fpga_family_code, TARGET_FAMILY);
+
+ /* take timebase-frequency from DTS */
+ ci->cpu_clock_freq = fcpu(cpu, "timebase-frequency");
+}
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c
new file mode 100644
index 0000000..7d1592d
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/autoconf.h>
+#include <asm/cpuinfo.h>
+
+const static char family_string[] = CONFIG_XILINX_MICROBLAZE0_FAMILY;
+const static char cpu_ver_string[] = CONFIG_XILINX_MICROBLAZE0_HW_VER;
+
+void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
+{
+ int i;
+
+ ci->use_barrel = fcpu(cpu, "xlnx,use-barrel");
+ ci->use_divider = fcpu(cpu, "xlnx,use-div");
+ ci->use_mult = fcpu(cpu, "xlnx,use-hw-mul");
+ ci->use_fpu = fcpu(cpu, "xlnx,use-fpu");
+ ci->use_mul_64 = (ci->use_mult == 2 ? 1 : 0);
+ ci->use_msr_instr = fcpu(cpu, "xlnx,use-msr-instr");
+ ci->use_pcmp_instr = fcpu(cpu, "xlnx,use-pcmp-instr");
+
+ ci->use_exception = fcpu(cpu, "xlnx,unaligned-exceptions") ||
+ fcpu(cpu, "xlnx,ill-opcode-exception") ||
+ fcpu(cpu, "xlnx,iopb-bus-exception") ||
+ fcpu(cpu, "xlnx,dopb-bus-exception") ||
+ fcpu(cpu, "xlnx,div-zero-exception") ||
+ fcpu(cpu, "xlnx,fpu-exception");
+
+ ci->exc_unaligned = fcpu(cpu, "xlnx,unaligned-exceptions");
+ ci->exc_unaligned = fcpu(cpu, "xlnx,ill-opcode-exception");
+ ci->exc_iopb = fcpu(cpu, "xlnx,iopb-bus-exception");
+ ci->exc_dopb = fcpu(cpu, "xlnx,dopb-bus-exception");
+ ci->exc_fpu = fcpu(cpu, "xlnx,fpu-exception");
+ ci->exc_div_zero = fcpu(cpu, "xlnx,div-zero-exception");
+ ci->opcode_0_illegal = fcpu(cpu, "xlnx,opcode-0x0-illegal");
+
+ ci->use_icache = fcpu(cpu, "xlnx,use-icache");
+ ci->icache_tagbits = fcpu(cpu, "xlnx,addr-tag-bits");
+ ci->icache_write = fcpu(cpu, "xlnx,allow-icache-wr");
+ ci->icache_line = fcpu(cpu, "xlnx,icache-line-len") << 2;
+ if (!ci->icache_line) {
+ if (fcpu(cpu, "xlnx,icache-use-fsl"))
+ ci->icache_line = 4 << 2;
+ else
+ ci->icache_line = 1 << 2;
+ }
+ ci->icache_size = fcpu(cpu, "i-cache-size");
+ ci->icache_base = fcpu(cpu, "i-cache-baseaddr");
+ ci->icache_high = fcpu(cpu, "i-cache-highaddr");
+
+ ci->use_dcache = fcpu(cpu, "xlnx,use-dcache");
+ ci->dcache_tagbits = fcpu(cpu, "xlnx,dcache-addr-tag");
+ ci->dcache_write = fcpu(cpu, "xlnx,allow-dcache-wr");
+ ci->dcache_line = fcpu(cpu, "xlnx,dcache-line-len") << 2;
+ if (!ci->dcache_line) {
+ if (fcpu(cpu, "xlnx,dcache-use-fsl"))
+ ci->dcache_line = 4 << 2;
+ else
+ ci->dcache_line = 1 << 2;
+ }
+ ci->dcache_size = fcpu(cpu, "d-cache-size");
+ ci->dcache_base = fcpu(cpu, "d-cache-baseaddr");
+ ci->dcache_high = fcpu(cpu, "d-cache-highaddr");
+
+ ci->use_dopb = fcpu(cpu, "xlnx,d-opb");
+ ci->use_iopb = fcpu(cpu, "xlnx,i-opb");
+ ci->use_dlmb = fcpu(cpu, "xlnx,d-lmb");
+ ci->use_ilmb = fcpu(cpu, "xlnx,i-lmb");
+
+ ci->num_fsl = fcpu(cpu, "xlnx,fsl-links");
+ ci->irq_edge = fcpu(cpu, "xlnx,interrupt-is-edge");
+ ci->irq_positive = fcpu(cpu, "xlnx,edge-is-positive");
+ ci->area_optimised = 0;
+
+ ci->hw_debug = fcpu(cpu, "xlnx,debug-enabled");
+ ci->num_pc_brk = fcpu(cpu, "xlnx,number-of-pc-brk");
+ ci->num_rd_brk = fcpu(cpu, "xlnx,number-of-rd-addr-brk");
+ ci->num_wr_brk = fcpu(cpu, "xlnx,number-of-wr-addr-brk");
+
+ ci->cpu_clock_freq = fcpu(cpu, "timebase-frequency");
+
+ ci->ver_code = 0;
+ ci->fpga_family_code = 0;
+
+ /* Do various fixups based on CPU version and FPGA family strings */
+
+ /* Resolved the CPU version code */
+ for (i = 0; cpu_ver_lookup[i].s != NULL; i++) {
+ if (strcmp(cpu_ver_lookup[i].s, cpu_ver_string) == 0)
+ ci->ver_code = cpu_ver_lookup[i].k;
+ }
+
+ /* Resolved the fpga family code */
+ for (i = 0; family_string_lookup[i].s != NULL; i++) {
+ if (strcmp(family_string_lookup[i].s, family_string) == 0)
+ ci->fpga_family_code = family_string_lookup[i].k;
+ }
+
+ /* FIXME - mb3 and spartan2 do not exist in PVR */
+ /* This is mb3 and on a non Spartan2 */
+ if (ci->ver_code == 0x20 && ci->fpga_family_code != 0xf0)
+ /* Hardware Multiplier in use */
+ ci->use_mult = 1;
+}
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
new file mode 100644
index 0000000..08ee835
--- /dev/null
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/autoconf.h>
+#include <asm/cpuinfo.h>
+#include <asm/pvr.h>
+
+const struct cpu_ver_key cpu_ver_lookup[] = {
+ /* These key value are as per MBV field in PVR0 */
+ {"5.00.a", 0x01},
+ {"5.00.b", 0x02},
+ {"5.00.c", 0x03},
+ {"6.00.a", 0x04},
+ {"6.00.b", 0x06},
+ {"7.00.a", 0x05},
+ {"7.00.b", 0x07},
+ {"7.10.a", 0x08},
+ {"7.10.b", 0x09},
+ /* FIXME There is no keycode defined in MBV for these versions */
+ {"2.10.a", 0x10},
+ {"3.00.a", 0x20},
+ {"4.00.a", 0x30},
+ {"4.00.b", 0x40},
+ {NULL, 0},
+};
+
+/*
+ * FIXME Not sure if the actual key is defined by Xilinx in the PVR
+ */
+const struct family_string_key family_string_lookup[] = {
+ {"virtex2", 0x4},
+ {"virtex2pro", 0x5},
+ {"spartan3", 0x6},
+ {"virtex4", 0x7},
+ {"virtex5", 0x8},
+ {"spartan3e", 0x9},
+ {"spartan3a", 0xa},
+ {"spartan3an", 0xb},
+ {"spartan3adsp", 0xc},
+ /* FIXME There is no key code defined for spartan2 */
+ {"spartan2", 0xf0},
+ {NULL, 0},
+};
+
+struct cpuinfo cpuinfo;
+
+void __init setup_cpuinfo(void)
+{
+ struct device_node *cpu = NULL;
+
+ cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
+ if (!cpu)
+ printk(KERN_ERR "You don't have cpu!!!\n");
+
+ printk(KERN_INFO "%s: initialising\n", __func__);
+
+ switch (cpu_has_pvr()) {
+ case 0:
+ printk(KERN_WARNING
+ "%s: No PVR support. Using static CPU info from FDT\n",
+ __func__);
+ set_cpuinfo_static(&cpuinfo, cpu);
+ break;
+/* FIXME I found weird behavior with MB 7.00.a/b
+ * please do not use FULL PVR with MMU */
+ case 1:
+ printk(KERN_INFO "%s: Using full CPU PVR support\n",
+ __func__);
+ set_cpuinfo_pvr_full(&cpuinfo, cpu);
+ break;
+ default:
+ printk(KERN_WARNING "%s: Unsupported PVR setting\n", __func__);
+ set_cpuinfo_static(&cpuinfo, cpu);
+ }
+}
diff --git a/include/asm-microblaze/cpuinfo.h b/include/asm-microblaze/cpuinfo.h
new file mode 100644
index 0000000..b9cd56d
--- /dev/null
+++ b/include/asm-microblaze/cpuinfo.h
@@ -0,0 +1,110 @@
+/*
+ * Generic support for queying CPU info
+ *
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2007 John Williams <[email protected]>
+ * Copyright (C) 2007 PetaLogix
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_CPUINFO_H
+#define _ASM_MICROBLAZE_CPUINFO_H
+
+#include <asm/prom.h>
+
+/* CPU Version and FPGA Family code conversion table type */
+struct cpu_ver_key {
+ const char *s;
+ const unsigned k;
+};
+
+extern const struct cpu_ver_key cpu_ver_lookup[];
+
+struct family_string_key {
+ const char *s;
+ const unsigned k;
+};
+
+extern const struct family_string_key family_string_lookup[];
+
+struct cpuinfo {
+ /* Core CPU configuration */
+ int use_barrel;
+ int use_divider;
+ int use_mult;
+ int use_fpu;
+ int use_exception;
+ int use_mul_64;
+ int use_msr_instr;
+ int use_pcmp_instr;
+
+ int ver_code;
+
+ /* CPU caches */
+ int use_icache;
+ int icache_tagbits;
+ int icache_write;
+ int icache_line;
+ int icache_size;
+ unsigned long icache_base;
+ unsigned long icache_high;
+
+ int use_dcache;
+ int dcache_tagbits;
+ int dcache_write;
+ int dcache_line;
+ int dcache_size;
+ unsigned long dcache_base;
+ unsigned long dcache_high;
+
+ /* Bus connections */
+ int use_dopb;
+ int use_iopb;
+ int use_dlmb;
+ int use_ilmb;
+ int num_fsl;
+
+ /* CPU interrupt line info */
+ int irq_edge;
+ int irq_positive;
+
+ int area_optimised;
+
+ /* HW support for CPU exceptions */
+ int opcode_0_illegal;
+ int exc_unaligned;
+ int exc_ill_opcode;
+ int exc_iopb;
+ int exc_dopb;
+ int exc_div_zero;
+ int exc_fpu;
+
+ /* HW debug support */
+ int hw_debug;
+ int num_pc_brk;
+ int num_rd_brk;
+ int num_wr_brk;
+ int cpu_clock_freq;
+
+ /* FPGA family */
+ int fpga_family_code;
+};
+
+extern struct cpuinfo cpuinfo;
+
+/* fwd declarations of the various CPUinfo populators */
+void setup_cpuinfo(void);
+
+void set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu);
+void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu);
+
+static inline unsigned int fcpu(struct device_node *cpu, char *n)
+{
+ int *val;
+ return ((val = (int *) of_get_property(cpu, n, NULL)) ? *val : 0);
+}
+
+#endif /* _ASM_MICROBLAZE_CPUINFO_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/exceptions.c | 77 +++++
arch/microblaze/kernel/hw_exception_handler.S | 392 +++++++++++++++++++++++++
include/asm-microblaze/exceptions.h | 63 ++++
3 files changed, 532 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/exceptions.c
create mode 100644 arch/microblaze/kernel/hw_exception_handler.S
create mode 100644 include/asm-microblaze/exceptions.h
diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c
new file mode 100644
index 0000000..734038e
--- /dev/null
+++ b/arch/microblaze/kernel/exceptions.c
@@ -0,0 +1,77 @@
+/*
+ * HW exception handling
+ *
+ * Copyright (C) 2007 Xilinx, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <asm/exceptions.h>
+#include <asm/entry.h> /* For KM CPU var */
+
+/* Initialize_exception_handlers() - called from setup.c/trap_init() */
+void initialize_exception_handlers(void)
+{
+}
+
+#define MICROBLAZE_ILL_OPCODE_EXCEPTION 0x02
+#define MICROBLAZE_IOPB_BUS_EXCEPTION 0x03
+#define MICROBLAZE_DOPB_BUS_EXCEPTION 0x04
+#define MICROBLAZE_DIV_ZERO_EXCEPTION 0x05
+#define MICROBLAZE_FPU_EXCEPTION 0x06
+
+static void handle_unexpected_exception(unsigned int esr,
+ unsigned int kernel_mode, unsigned int addr)
+{
+ printk(KERN_WARNING "Unexpected exception %02x in %s mode, PC=%08x\n",
+ esr, kernel_mode ? "kernel" : "user", addr);
+}
+
+static void handle_exception(const char *message, int signal,
+ unsigned int kernel_mode, unsigned int addr)
+{
+ if (kernel_mode)
+ panic("%s in the kernel mode, PC=%08x\n", message, addr);
+ else
+ force_sig(signal, current);
+}
+
+asmlinkage void other_exception_handler(unsigned int esr, unsigned int addr)
+{
+ unsigned int kernel_mode = per_cpu(KM, 0);
+
+ switch (esr) {
+
+ case MICROBLAZE_ILL_OPCODE_EXCEPTION:
+ handle_exception("Illegal instruction", SIGILL,
+ kernel_mode, addr);
+ break;
+
+ case MICROBLAZE_IOPB_BUS_EXCEPTION:
+ handle_exception("Instruction bus error", SIGBUS,
+ kernel_mode, addr);
+ break;
+
+ case MICROBLAZE_DOPB_BUS_EXCEPTION:
+ handle_exception("Data bus error", SIGBUS, kernel_mode, addr);
+ break;
+
+ case MICROBLAZE_DIV_ZERO_EXCEPTION:
+ handle_exception("Divide by zero", SIGILL, kernel_mode, addr);
+ break;
+
+ case MICROBLAZE_FPU_EXCEPTION:
+ handle_exception("FPU error", SIGFPE, kernel_mode, addr);
+ break;
+
+ default:
+ handle_unexpected_exception(esr, kernel_mode, addr);
+ }
+
+ return;
+}
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
new file mode 100644
index 0000000..894ebd0
--- /dev/null
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -0,0 +1,392 @@
+/*
+ * Unaligned exception handling for Microblaze
+ *
+ * cleanup code (C) 2007 Michal Simek <[email protected]>
+ * uClinux customisation (C) 2005 John Williams
+ *
+ * Original code
+ * Copyright (C) 2004 Xilinx, Inc. All rights reserved.
+ *
+ * Xilinx, Inc.
+ * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
+ * COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
+ * ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
+ * STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
+ * IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
+ * FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
+ * XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
+ * THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
+ * ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
+ * FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Id: hw_exception_handler.S,v 1.1.2.1 2007/03/16 16:09:57 imanuilov Exp $
+ *
+ */
+
+/*
+ * Microblaze HW Exception Handler
+ * - Non self-modifying exception handler for the following exception conditions
+ * - Unalignment
+ * - Instruction bus error
+ * - Data bus error
+ * - Illegal instruction opcode
+ * - Divide-by-zero
+ *
+ * Note we disable interrupts during exception handling, otherwise we will
+ * possibly get multiple re-entrancy if interrupt handles themselves cause
+ * exceptions. JW
+ */
+
+#include <linux/autoconf.h>
+#include <asm/exceptions.h>
+#include <asm/unistd.h>
+
+/* Helpful Macros */
+#define EX_HANDLER_STACK_SIZ (4*19)
+#define RMSR_OFFSET 0
+#define REG_OFFSET(regnum) (4*regnum)
+#define NUM_TO_REG(num) r ## num
+
+#define R3_TO_STACK(regnum) swi r3, r1, REG_OFFSET(regnum)
+#define R3_FROM_STACK(regnum) lwi r3, r1, REG_OFFSET(regnum)
+
+#define PUSH_REG(regnum) swi NUM_TO_REG(regnum), r1, REG_OFFSET(regnum)
+#define POP_REG(regnum) lwi NUM_TO_REG(regnum), r1, REG_OFFSET(regnum)
+
+/* Uses r5 */
+#define PUSH_MSR \
+ mfs r5, rmsr; \
+ swi r5, r1, RMSR_OFFSET;
+
+#define PUSH_MSR_AND_ENABLE_EXC \
+ mfs r5, rmsr; \
+ swi r5, r1, RMSR_OFFSET; \
+ ori r5, r5, 0x100; /* Turn ON the EE bit */ \
+ andi r5, r5, ~2; /* Disable interrupts */ \
+ mts rmsr, r5;
+
+/* Uses r5 */
+#define POP_MSR \
+ lwi r5, r1, RMSR_OFFSET; \
+ mts rmsr, r5;
+
+#define LWREG_NOP \
+ bri ex_handler_unhandled; \
+ nop;
+
+#define SWREG_NOP \
+ bri ex_handler_unhandled; \
+ nop;
+
+/* r3 is the source */
+#define R3_TO_LWREG_V(regnum) \
+ R3_TO_STACK(regnum); \
+ bri ex_handler_done;
+
+/* r3 is the source */
+#define R3_TO_LWREG(regnum) \
+ or NUM_TO_REG (regnum), r0, r3; \
+ bri ex_handler_done;
+
+/* r3 is the target */
+#define SWREG_TO_R3_V(regnum) \
+ R3_FROM_STACK (regnum); \
+ bri ex_sw_tail;
+
+/* r3 is the target */
+#define SWREG_TO_R3(regnum) \
+ or r3, r0, NUM_TO_REG (regnum); \
+ bri ex_sw_tail;
+
+.extern other_exception_handler /* Defined in exception.c */
+
+/*
+ * hw_exception_handler - Handler for unaligned exceptions
+ * Exception handler notes:
+ * - Does not handle exceptions other than unaligned exceptions
+ * - Does not handle exceptions during load into r17, r1, r0.
+ * - Does not handle exceptions during store from r17 (cannot be done)
+ * and r1 (slows down common case)
+ *
+ * Relevant register structures
+ *
+ * EAR - |----|----|----|----|----|----|----|----|
+ * - < ## 32 bit faulting address ## >
+ *
+ * ESR - |----|----|----|----|----| - | - |-----|-----|
+ * - W S REG EXC
+ *
+ *
+ * STACK FRAME STRUCTURE
+ * ---------------------
+ *
+ * +-------------+ + 0
+ * | MSR |
+ * +-------------+ + 4
+ * | r1 |
+ * | . |
+ * | . |
+ * | . |
+ * | . |
+ * | r18 |
+ * +-------------+ + 76
+ * | . |
+ * | . |
+ */
+
+.global _hw_exception_handler
+.section .text
+.align 4
+.ent _hw_exception_handler
+_hw_exception_handler:
+ addik r1, r1, -(EX_HANDLER_STACK_SIZ); /* Create stack frame */
+ PUSH_REG(3);
+ PUSH_REG(4);
+ PUSH_REG(5);
+ PUSH_REG(6);
+ mfs r3, resr;
+
+ andi r5, r3, 0x1000;
+ beqi r5, not_in_delay_slot;
+ mfs r17, rbtr;
+not_in_delay_slot:
+
+ PUSH_REG(17);
+ /* Exceptions enabled here. This will allow nested exceptions */
+ PUSH_MSR_AND_ENABLE_EXC;
+
+ andi r5, r3, 0x1F; /* Extract ESR[EXC] */
+
+ xori r6, r5, 1; /* 00001 = Unaligned Exception */
+ /* Jump to unalignment exception handler */
+ beqi r6, handle_unaligned_ex;
+
+handle_other_ex: /* Handle Other exceptions here */
+ /* Save other volatiles before we make procedure calls below */
+ PUSH_REG(7);
+ PUSH_REG(8);
+ PUSH_REG(9);
+ PUSH_REG(10);
+ PUSH_REG(11);
+ PUSH_REG(12);
+ PUSH_REG(14);
+ PUSH_REG(15);
+ PUSH_REG(18);
+
+ andi r5, r3, 0x1F; /* Load ESR[EC] */
+ addk r6, r17, r0; /* Load exception address */
+ bralid r15, other_exception_handler; /* Branch to the handler */
+ nop;
+
+ /*
+ * Trigger execution of the signal handler by enabling
+ * interrupts and calling an invalid syscall.
+ */
+ mfs r5, rmsr;
+ ori r5, r5, 2;
+ mts rmsr, r5;
+ addi r12, r0, NR_syscalls;
+ brki r14, 0x08;
+ mfs r5, rmsr;
+ andi r5, r5, ~2;
+ mts rmsr, r5;
+
+ POP_REG(7); /* Restore other volatiles */
+ POP_REG(8);
+ POP_REG(9);
+ POP_REG(10);
+ POP_REG(11);
+ POP_REG(12);
+ POP_REG(14);
+ POP_REG(15);
+ POP_REG(18);
+
+ bri ex_handler_done; /* Complete exception handling */
+handle_unaligned_ex:
+ andi r6, r3, 0x3E0; /* Mask and extract the register operand */
+ srl r6, r6; /* r6 >> 5 */
+ srl r6, r6;
+ srl r6, r6;
+ srl r6, r6;
+ srl r6, r6;
+ /* Store the register operand in a temporary location */
+ sbi r6, r0, ex_reg_op;
+ mfs r4, rear;
+ andi r6, r3, 0x400; /* Extract ESR[S] */
+ bnei r6, ex_sw;
+ex_lw:
+ andi r6, r3, 0x800; /* Extract ESR[W] */
+ beqi r6, ex_lhw;
+ lbui r5, r4, 0; /* Exception address in r4 */
+ /* Load a word, byte-by-byte from destination address
+ and save it in tmp space */
+ sbi r5, r0, ex_tmp_data_loc_0;
+ lbui r5, r4, 1;
+ sbi r5, r0, ex_tmp_data_loc_1;
+ lbui r5, r4, 2;
+ sbi r5, r0, ex_tmp_data_loc_2;
+ lbui r5, r4, 3;
+ sbi r5, r0, ex_tmp_data_loc_3;
+ /* Get the destination register value into r3 */
+ lwi r3, r0, ex_tmp_data_loc_0;
+ bri ex_lw_tail;
+ex_lhw:
+ lbui r5, r4, 0; /* Exception address in r4 */
+ /* Load a half-word, byte-by-byte from destination
+ address and save it in tmp space */
+ sbi r5, r0, ex_tmp_data_loc_0;
+ lbui r5, r4, 1;
+ sbi r5, r0, ex_tmp_data_loc_1;
+ /* Get the destination register value into r3 */
+ lhui r3, r0, ex_tmp_data_loc_0;
+ex_lw_tail:
+ /* Get the destination register number into r5 */
+ lbui r5, r0, ex_reg_op;
+ /* Form load_word jump table offset (lw_table + (8 * regnum)) */
+ la r6, r0, lw_table;
+ addk r5, r5, r5;
+ addk r5, r5, r5;
+ addk r5, r5, r5;
+ addk r5, r5, r6;
+ bra r5;
+ex_lw_end: /* Exception handling of load word, ends */
+ex_sw:
+ /* Get the destination register number into r5 */
+ lbui r5, r0, ex_reg_op;
+ /* Form store_word jump table offset (sw_table + (8 * regnum)) */
+ la r6, r0, sw_table;
+ add r5, r5, r5;
+ add r5, r5, r5;
+ add r5, r5, r5;
+ add r5, r5, r6;
+ bra r5;
+ex_sw_tail:
+ mfs r6, resr;
+ andi r6, r6, 0x800; /* Extract ESR[W] */
+ beqi r6, ex_shw;
+ swi r3, r0, ex_tmp_data_loc_0;
+ /* Store the word, byte-by-byte into destination address */
+ lbui r3, r0, ex_tmp_data_loc_0;
+ sbi r3, r4, 0;
+ lbui r3, r0, ex_tmp_data_loc_1;
+ sbi r3, r4, 1;
+ lbui r3, r0, ex_tmp_data_loc_2;
+ sbi r3, r4, 2;
+ lbui r3, r0, ex_tmp_data_loc_3;
+ sbi r3, r4, 3;
+ bri ex_handler_done;
+ex_shw:
+ /* Store the lower half-word, byte-by-byte into destination address */
+ swi r3, r0, ex_tmp_data_loc_0;
+ lbui r3, r0, ex_tmp_data_loc_2;
+ sbi r3, r4, 0;
+ lbui r3, r0, ex_tmp_data_loc_3;
+ sbi r3, r4, 1;
+ex_sw_end: /* Exception handling of store word, ends. */
+
+ex_handler_done:
+ POP_MSR;
+ POP_REG(3);
+ POP_REG(4);
+ POP_REG(5);
+ POP_REG(6);
+ POP_REG(17);
+ rted r17, 0
+ addik r1, r1, (EX_HANDLER_STACK_SIZ); /* Restore stack frame */
+ex_handler_unhandled:
+ bri 0 /* UNHANDLED. TRAP HERE */
+.end _hw_exception_handler
+
+/*
+* hw_exception_handler Jump Table
+* - Contains code snippets for each register that caused the unaligned exception
+* - Hence exception handler is NOT self-modifying
+* - Separate table for load exceptions and store exceptions.
+* - Each table is of size: (8 * 32) = 256 bytes
+*/
+
+.section .text
+.align 4
+lw_table:
+lw_r0: R3_TO_LWREG (0);
+lw_r1: LWREG_NOP;
+lw_r2: R3_TO_LWREG (2);
+lw_r3: R3_TO_LWREG_V (3);
+lw_r4: R3_TO_LWREG_V (4);
+lw_r5: R3_TO_LWREG_V (5);
+lw_r6: R3_TO_LWREG_V (6);
+lw_r7: R3_TO_LWREG (7);
+lw_r8: R3_TO_LWREG (8);
+lw_r9: R3_TO_LWREG (9);
+lw_r10: R3_TO_LWREG (10);
+lw_r11: R3_TO_LWREG (11);
+lw_r12: R3_TO_LWREG (12);
+lw_r13: R3_TO_LWREG (13);
+lw_r14: R3_TO_LWREG (14);
+lw_r15: R3_TO_LWREG (15);
+lw_r16: R3_TO_LWREG (16);
+lw_r17: LWREG_NOP;
+lw_r18: R3_TO_LWREG (18);
+lw_r19: R3_TO_LWREG (19);
+lw_r20: R3_TO_LWREG (20);
+lw_r21: R3_TO_LWREG (21);
+lw_r22: R3_TO_LWREG (22);
+lw_r23: R3_TO_LWREG (23);
+lw_r24: R3_TO_LWREG (24);
+lw_r25: R3_TO_LWREG (25);
+lw_r26: R3_TO_LWREG (26);
+lw_r27: R3_TO_LWREG (27);
+lw_r28: R3_TO_LWREG (28);
+lw_r29: R3_TO_LWREG (29);
+lw_r30: R3_TO_LWREG (30);
+lw_r31: R3_TO_LWREG (31);
+
+sw_table:
+sw_r0: SWREG_TO_R3 (0);
+sw_r1: SWREG_NOP;
+sw_r2: SWREG_TO_R3 (2);
+sw_r3: SWREG_TO_R3_V (3);
+sw_r4: SWREG_TO_R3_V (4);
+sw_r5: SWREG_TO_R3_V (5);
+sw_r6: SWREG_TO_R3_V (6);
+sw_r7: SWREG_TO_R3 (7);
+sw_r8: SWREG_TO_R3 (8);
+sw_r9: SWREG_TO_R3 (9);
+sw_r10: SWREG_TO_R3 (10);
+sw_r11: SWREG_TO_R3 (11);
+sw_r12: SWREG_TO_R3 (12);
+sw_r13: SWREG_TO_R3 (13);
+sw_r14: SWREG_TO_R3 (14);
+sw_r15: SWREG_TO_R3 (15);
+sw_r16: SWREG_TO_R3 (16);
+sw_r17: SWREG_NOP;
+sw_r18: SWREG_TO_R3 (18);
+sw_r19: SWREG_TO_R3 (19);
+sw_r20: SWREG_TO_R3 (20);
+sw_r21: SWREG_TO_R3 (21);
+sw_r22: SWREG_TO_R3 (22);
+sw_r23: SWREG_TO_R3 (23);
+sw_r24: SWREG_TO_R3 (24);
+sw_r25: SWREG_TO_R3 (25);
+sw_r26: SWREG_TO_R3 (26);
+sw_r27: SWREG_TO_R3 (27);
+sw_r28: SWREG_TO_R3 (28);
+sw_r29: SWREG_TO_R3 (29);
+sw_r30: SWREG_TO_R3 (30);
+sw_r31: SWREG_TO_R3 (31);
+
+/* Temporary data structures used in the handler */
+.section .data
+.align 4
+ex_tmp_data_loc_0:
+ .byte 0
+ex_tmp_data_loc_1:
+ .byte 0
+ex_tmp_data_loc_2:
+ .byte 0
+ex_tmp_data_loc_3:
+ .byte 0
+ex_reg_op:
+ .byte 0
+
diff --git a/include/asm-microblaze/exceptions.h b/include/asm-microblaze/exceptions.h
new file mode 100644
index 0000000..bd33392
--- /dev/null
+++ b/include/asm-microblaze/exceptions.h
@@ -0,0 +1,63 @@
+/*
+ * Preliminary support for HW exception handing for Microblaze
+ *
+ * Copyright (C) 2005 John Williams <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_EXCEPTIONS_H
+#define _ASM_MICROBLAZE_EXCEPTIONS_H
+
+#include <linux/autoconf.h>
+
+#ifndef __ASSEMBLY__
+
+void initialize_exception_handlers(void);
+asmlinkage void other_exception_handler(unsigned int esr, unsigned int addr);
+
+/* Macros to enable and disable HW exceptions in the MSR */
+/* Define MSR enable bit for HW exceptions */
+#define HWEX_MSR_BIT (1 << 8)
+
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+#define __enable_hw_exceptions() \
+ __asm__ __volatile__ (" msrset r0, %0; \
+ nop; " \
+ : \
+ : "i" (HWEX_MSR_BIT) \
+ : "memory")
+
+#define __disable_hw_exceptions() \
+ __asm__ __volatile__ (" msrclr r0, %0; \
+ nop; " \
+ : \
+ : "i" (HWEX_MSR_BIT) \
+ : "memory")
+#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
+#define __enable_hw_exceptions() \
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ ori r12, r12, %0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (HWEX_MSR_BIT) \
+ : "memory", "r12")
+
+#define __disable_hw_exceptions() \
+ __asm__ __volatile__ (" \
+ mfs r12, rmsr; \
+ andi r12, r12, ~%0; \
+ mts rmsr, r12; \
+ nop; " \
+ : \
+ : "i" (HWEX_MSR_BIT) \
+ : "memory", "r12")
+#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
+
+#endif /*__ASSEMBLY__ */
+
+#endif /* _ASM_MICROBLAZE_EXCEPTIONS_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/intc.c | 163 ++++++++++++++++++++++++++++++++++++++
arch/microblaze/kernel/irq.c | 93 ++++++++++++++++++++++
arch/microblaze/kernel/selfmod.c | 76 ++++++++++++++++++
arch/microblaze/kernel/timer.c | 136 +++++++++++++++++++++++++++++++
include/asm-microblaze/irq.h | 40 +++++++++
include/asm-microblaze/selfmod.h | 24 ++++++
6 files changed, 532 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/intc.c
create mode 100644 arch/microblaze/kernel/irq.c
create mode 100644 arch/microblaze/kernel/selfmod.c
create mode 100644 arch/microblaze/kernel/timer.c
create mode 100644 include/asm-microblaze/irq.h
create mode 100644 include/asm-microblaze/selfmod.h
diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
new file mode 100644
index 0000000..3a6529d
--- /dev/null
+++ b/arch/microblaze/kernel/intc.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2007 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/autoconf.h>
+#include <asm/page.h>
+#include <asm/io.h>
+
+#include <asm/prom.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_SELFMOD_INTC
+#include <asm/selfmod.h>
+#define INTC_BASE BARRIER_BASE_ADDR
+#else
+static unsigned int intc_baseaddr;
+#define INTC_BASE intc_baseaddr
+#endif
+
+unsigned int nr_irq;
+
+/* No one else should require these constants, so define them locally here. */
+#define ISR 0x00 /* Interrupt Status Register */
+#define IPR 0x04 /* Interrupt Pending Register */
+#define IER 0x08 /* Interrupt Enable Register */
+#define IAR 0x0c /* Interrupt Acknowledge Register */
+#define SIE 0x10 /* Set Interrupt Enable bits */
+#define CIE 0x14 /* Clear Interrupt Enable bits */
+#define IVR 0x18 /* Interrupt Vector Register */
+#define MER 0x1c /* Master Enable Register */
+
+#define MER_ME (1<<0)
+#define MER_HIE (1<<1)
+
+static void intc_enable(unsigned int irq)
+{
+ unsigned int mask = (0x00000001 << (irq & 31));
+ pr_debug("enable: %d\n", irq);
+ iowrite32(mask, INTC_BASE + SIE);
+}
+
+static void intc_disable(unsigned int irq)
+{
+ unsigned long mask = (0x00000001 << (irq & 31));
+ pr_debug("disable: %d\n", irq);
+ iowrite32(mask, INTC_BASE + CIE);
+}
+
+static void intc_disable_and_ack(unsigned int irq)
+{
+ unsigned long mask = (0x00000001 << (irq & 31));
+ pr_debug("disable_and_ack: %d\n", irq);
+ iowrite32(mask, INTC_BASE + CIE);
+ /* ack edge triggered intr */
+ if (!(irq_desc[irq].status & IRQ_LEVEL))
+ iowrite32(mask, INTC_BASE + IAR);
+}
+
+static void intc_end(unsigned int irq)
+{
+ unsigned long mask = (0x00000001 << (irq & 31));
+
+ pr_debug("end: %d\n", irq);
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
+ iowrite32(mask, INTC_BASE + SIE);
+ /* ack level sensitive intr */
+ if (irq_desc[irq].status & IRQ_LEVEL)
+ iowrite32(mask, INTC_BASE + IAR);
+ }
+}
+
+static struct irq_chip intc_dev = {
+ .name = "INTC",
+ .enable = intc_enable,
+ .disable = intc_disable,
+ .mask_ack = intc_disable_and_ack,
+ .end = intc_end,
+};
+
+unsigned int get_irq(struct pt_regs *regs)
+{
+ int irq;
+
+ /*
+ * NOTE: This function is the one that needs to be improved in
+ * order to handle multiple interrupt controllers. It currently
+ * is hardcoded to check for interrupts only on the first INTC.
+ */
+ irq = ioread32(INTC_BASE + IVR);
+ pr_debug("get_irq: %d\n", irq);
+
+ return irq;
+}
+
+void __init init_IRQ(void)
+{
+ int i, j, intr_type;
+ struct device_node *intc = NULL;
+#ifdef CONFIG_SELFMOD_INTC
+ unsigned int intc_baseaddr = 0;
+ static int arr_func[] = {
+ (int)&get_irq,
+ (int)&intc_enable,
+ (int)&intc_disable,
+ (int)&intc_disable_and_ack,
+ (int)&intc_end,
+ 0
+ };
+#endif
+ static char *intc_list[] = {
+ "xlnx,xps-intc-1.00.a",
+ "xlnx,opb-intc-1.00.c",
+ "xlnx,opb-intc-1.00.b",
+ "xlnx,opb-intc-1.00.a",
+ NULL
+ };
+
+ for (j = 0; intc_list[j] != NULL; j++) {
+ intc = of_find_compatible_node(NULL, NULL, intc_list[j]);
+ if (intc)
+ break;
+ }
+
+ intc_baseaddr = *(int *) of_get_property(intc, "reg", NULL);
+ intc_baseaddr = (unsigned long) ioremap(intc_baseaddr, PAGE_SIZE);
+ nr_irq = *(int *) of_get_property(intc, "xlnx,num-intr-inputs", NULL);
+ intr_type = *(int *) of_get_property(intc, "xlnx,kind-of-edge", NULL);
+#ifdef CONFIG_SELFMOD_INTC
+ selfmod_function((int *) arr_func, intc_baseaddr);
+#endif
+ printk(KERN_INFO "%s #0 at 0x%08x, num_irq=%d, edge=0x%x\n",
+ intc_list[j], intc_baseaddr, nr_irq, intr_type);
+
+ /*
+ * Disable all external interrupts until they are
+ * explicity requested.
+ */
+ iowrite32(0, intc_baseaddr + IER);
+
+ /* Acknowledge any pending interrupts just in case. */
+ iowrite32(0xffffffff, intc_baseaddr + IAR);
+
+ /* Turn on the Master Enable. */
+ iowrite32(MER_HIE | MER_ME, intc_baseaddr + MER);
+
+ for (i = 0; i < nr_irq; ++i) {
+ if (intr_type & (0x00000001 << i)) {
+ set_irq_chip_and_handler_name(i, &intc_dev,
+ handle_edge_irq, intc_dev.name);
+ irq_desc[i].status &= ~IRQ_LEVEL;
+ } else {
+ set_irq_chip_and_handler_name(i, &intc_dev,
+ handle_level_irq, intc_dev.name);
+ irq_desc[i].status |= IRQ_LEVEL;
+ }
+ }
+}
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
new file mode 100644
index 0000000..63e8994
--- /dev/null
+++ b/arch/microblaze/kernel/irq.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/hardirq.h>
+#include <linux/interrupt.h>
+#include <linux/irqflags.h>
+#include <linux/seq_file.h>
+#include <linux/kernel_stat.h>
+#include <linux/irq.h>
+
+#include <asm/prom.h>
+
+unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
+{
+ struct of_irq oirq;
+
+ if (of_irq_map_one(dev, index, &oirq))
+ return NO_IRQ;
+
+ return oirq.specifier[0];
+}
+EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
+
+/*
+ * 'what should we do if we get a hw irq event on an illegal vector'.
+ * each architecture has to answer this themselves.
+ */
+void ack_bad_irq(unsigned int irq)
+{
+ printk(KERN_WARNING "unexpected IRQ trap at vector %02x\n", irq);
+}
+
+void do_IRQ(struct pt_regs *regs)
+{
+ unsigned int irq;
+ struct irq_desc *desc;
+
+ irq_enter();
+ set_irq_regs(regs);
+ irq = get_irq(regs);
+ BUG_ON(irq == -1U);
+ desc = irq_desc + irq;
+ desc->handle_irq(irq, desc);
+ desc->chip->end(irq);
+ irq_exit();
+}
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+ int i = *(loff_t *) v, j;
+ struct irqaction *action;
+ unsigned long flags;
+
+ if (i == 0) {
+ seq_printf(p, " ");
+ for_each_online_cpu(j)
+ seq_printf(p, "CPU%-8d", j);
+ seq_putc(p, '\n');
+ }
+
+ if (i < nr_irq) {
+ spin_lock_irqsave(&irq_desc[i].lock, flags);
+ action = irq_desc[i].action;
+ if (!action)
+ goto skip;
+ seq_printf(p, "%3d: ", i);
+#ifndef CONFIG_SMP
+ seq_printf(p, "%10u ", kstat_irqs(i));
+#else
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+#endif
+ seq_printf(p, " %8s", irq_desc[i].status &
+ IRQ_LEVEL ? "level": "edge");
+ seq_printf(p, " %8s", irq_desc[i].chip->name);
+ seq_printf(p, " %s", action->name);
+
+ for (action = action->next; action; action = action->next)
+ seq_printf(p, ", %s", action->name);
+
+ seq_putc(p, '\n');
+skip:
+ spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ }
+ return 0;
+}
diff --git a/arch/microblaze/kernel/selfmod.c b/arch/microblaze/kernel/selfmod.c
new file mode 100644
index 0000000..3c4cd25
--- /dev/null
+++ b/arch/microblaze/kernel/selfmod.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/interrupt.h>
+#include <asm/selfmod.h>
+
+#undef DEBUG
+
+#define OPCODE_IMM 0xB0000000
+#define OPCODE_LWI 0xE8000000
+#define OPCODE_LWI_MASK 0xEC000000
+#define OPCODE_RTSD 0xB60F0008 /* return from func: rtsd r15, 8 */
+#define OPCODE_ADDIK 0x30000000
+#define OPCODE_ADDIK_MASK 0xFC000000
+
+#define IMM_BASE (OPCODE_IMM | (BARRIER_BASE_ADDR >> 16))
+#define LWI_BASE (OPCODE_LWI | (BARRIER_BASE_ADDR & 0x0000ff00))
+#define LWI_BASE_MASK (OPCODE_LWI_MASK | (BARRIER_BASE_ADDR & 0x0000ff00))
+#define ADDIK_BASE (OPCODE_ADDIK | (BARRIER_BASE_ADDR & 0x0000ff00))
+#define ADDIK_BASE_MASK (OPCODE_ADDIK_MASK | (BARRIER_BASE_ADDR & 0x0000ff00))
+
+#define MODIFY_INSTR { \
+ pr_debug("%s: curr instr, (%d):0x%x, next(%d):0x%x\n", \
+ __func__, i, addr[i], i + 1, addr[i + 1]); \
+ addr[i] = OPCODE_IMM + (base >> 16); \
+ /* keep instruction opcode and add only last 16bits */ \
+ addr[i + 1] = (addr[i + 1] & 0xffff00ff) + (base & 0xffff); \
+ __invalidate_icache(addr[i]); \
+ __invalidate_icache(addr[i + 1]); \
+ pr_debug("%s: hack instr, (%d):0x%x, next(%d):0x%x\n", \
+ __func__, i, addr[i], i + 1, addr[i + 1]); \
+ }
+
+/* NOTE
+ * self-modified part of code for improvement of interrupt controller
+ * save instruction in interrupt rutine
+ */
+void selfmod_function(const int *arr_fce, const unsigned int base)
+{
+ unsigned int flags, i, j, *addr = NULL;
+
+ local_irq_save(flags);
+ __disable_icache();
+
+ /* zero terminated array */
+ for (j = 0; arr_fce[j] != 0; j++) {
+ /* get start address of function */
+ addr = (unsigned int *) arr_fce[j];
+ pr_debug("%s: func(%d) at 0x%x\n",
+ __func__, j, (unsigned int) addr);
+ for (i = 0; ; i++) {
+ pr_debug("%s: instruction code at %d: 0x%x\n",
+ __func__, i, addr[i]);
+ if (addr[i] == IMM_BASE) {
+ /* detecting of lwi (0xE8) or swi (0xF8) instr
+ * I can detect both opcode with one mask */
+ if ((addr[i + 1] & LWI_BASE_MASK) == LWI_BASE) {
+ MODIFY_INSTR;
+ } else /* detection addik for ack */
+ if ((addr[i + 1] & ADDIK_BASE_MASK)
+ == ADDIK_BASE)
+ MODIFY_INSTR;
+ } else if (addr[i] == OPCODE_RTSD) {
+ /* return from function means end of function */
+ pr_debug("%s: end of array %d\n", __func__, i);
+ break;
+ }
+ }
+ }
+ local_irq_restore(flags);
+} /* end of self-modified code */
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
new file mode 100644
index 0000000..35c7d59
--- /dev/null
+++ b/arch/microblaze/kernel/timer.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/interrupt.h>
+#include <linux/profile.h>
+#include <linux/irq.h>
+#include <asm/io.h>
+#include <asm/cpuinfo.h>
+#include <asm/setup.h>
+
+#include <asm/prom.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_SELFMOD_TIMER
+#include <asm/selfmod.h>
+#define TIMER_BASE BARRIER_BASE_ADDR
+#else
+static unsigned int timer_baseaddr;
+#define TIMER_BASE timer_baseaddr
+#endif
+
+#define TCSR0 (0x00)
+#define TLR0 (0x04)
+#define TCR0 (0x08)
+#define TCSR1 (0x10)
+#define TLR1 (0x14)
+#define TCR1 (0x18)
+
+#define TCSR_MDT (1<<0)
+#define TCSR_UDT (1<<1)
+#define TCSR_GENT (1<<2)
+#define TCSR_CAPT (1<<3)
+#define TCSR_ARHT (1<<4)
+#define TCSR_LOAD (1<<5)
+#define TCSR_ENIT (1<<6)
+#define TCSR_ENT (1<<7)
+#define TCSR_TINT (1<<8)
+#define TCSR_PWMA (1<<9)
+#define TCSR_ENALL (1<<10)
+
+static void timer_ack(void)
+{
+ iowrite32(ioread32(TIMER_BASE + TCSR0), TIMER_BASE + TCSR0);
+}
+
+irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+#ifdef CONFIG_HEART_BEAT
+ heartbeat();
+#endif
+ timer_ack();
+
+ write_seqlock(&xtime_lock);
+
+ do_timer(1);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
+
+ write_sequnlock(&xtime_lock);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction timer_irqaction = {
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED,
+ .name = "timer",
+};
+
+void time_init(void)
+{
+ int irq, j = 0;
+ struct device_node *timer = NULL;
+#ifdef CONFIG_SELFMOD_TIMER
+ unsigned int timer_baseaddr = 0;
+ int arr_func[] = {
+ (int)&timer_ack,
+ 0
+ };
+#endif
+ char *timer_list[] = {
+ "xlnx,xps-timer-1.00.a",
+ "xlnx,opb-timer-1.00.b",
+ "xlnx,opb-timer-1.00.a",
+ NULL
+ };
+
+ for (j = 0; timer_list[j] != NULL; j++) {
+ timer = of_find_compatible_node(NULL, NULL, timer_list[j]);
+ if (timer)
+ break;
+ }
+
+ timer_baseaddr = *(int *) of_get_property(timer, "reg", NULL);
+ timer_baseaddr = (unsigned long) ioremap(timer_baseaddr, PAGE_SIZE);
+ irq = *(int *) of_get_property(timer, "interrupts", NULL);
+#ifdef CONFIG_SELFMOD_TIMER
+ selfmod_function((int *) arr_func, timer_baseaddr);
+#endif
+ printk(KERN_INFO "%s #0 at 0x%08x, irq=%d\n",
+ timer_list[j], timer_baseaddr, irq);
+
+ /* set the initial value to the load register */
+ iowrite32(cpuinfo.cpu_clock_freq/HZ, timer_baseaddr + TLR0);
+
+ /* load the initial value */
+ iowrite32(TCSR_LOAD, timer_baseaddr + TCSR0);
+
+ /* see timer data sheet for detail
+ * !ENALL - don't enable 'em all
+ * !PWMA - disable pwm
+ * TINT - clear interrupt status
+ * ENT- enable timer itself
+ * EINT - enable interrupt
+ * !LOAD - clear the bit to let go
+ * ARHT - auto reload
+ * !CAPT - no external trigger
+ * !GENT - no external signal
+ * UDT - set the timer as down counter
+ * !MDT0 - generate mode
+ *
+ */
+ iowrite32(TCSR_TINT|TCSR_ENT|TCSR_ENIT|TCSR_ARHT|TCSR_UDT,
+ timer_baseaddr + TCSR0);
+
+ setup_irq(irq, &timer_irqaction);
+}
diff --git a/include/asm-microblaze/irq.h b/include/asm-microblaze/irq.h
new file mode 100644
index 0000000..12a6b14
--- /dev/null
+++ b/include/asm-microblaze/irq.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_IRQ_H
+#define _ASM_MICROBLAZE_IRQ_H
+
+#define NR_IRQS 32
+
+#include <linux/interrupt.h>
+
+extern unsigned int nr_irq;
+
+#define NO_IRQ (-1)
+
+static inline int irq_canonicalize(int irq)
+{
+ return irq;
+}
+
+struct pt_regs;
+extern void do_IRQ(struct pt_regs *regs);
+extern void __init init_IRQ(void);
+irqreturn_t timer_interrupt(int irq, void *dev_id);
+
+/* irq_of_parse_and_map - Parse and Map an interrupt into linux virq space
+ * @device: Device node of the device whose interrupt is to be mapped
+ * @index: Index of the interrupt to map
+ *
+ * This function is a wrapper that chains of_irq_map_one() and
+ * irq_create_of_mapping() to make things easier to callers
+ */
+struct device_node;
+extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
+
+#endif /* _ASM_MICROBLAZE_IRQ_H */
diff --git a/include/asm-microblaze/selfmod.h b/include/asm-microblaze/selfmod.h
new file mode 100644
index 0000000..c42aff2
--- /dev/null
+++ b/include/asm-microblaze/selfmod.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SELFMOD_H
+#define _ASM_MICROBLAZE_SELFMOD_H
+
+/*
+ * BARRIER_BASE_ADDR is constant address for selfmod function.
+ * do not change this value - selfmod function is in
+ * arch/microblaze/kernel/selfmod.c: selfmod_function()
+ *
+ * last 16 bits is used for storing register offset
+ */
+
+#define BARRIER_BASE_ADDR 0x1234ff00
+
+void selfmod_function(const int *arr_fce, const unsigned int base);
+
+#endif /* _ASM_MICROBLAZE_SELFMOD_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/defconfig | 698 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 698 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/defconfig
diff --git a/arch/microblaze/defconfig b/arch/microblaze/defconfig
new file mode 100644
index 0000000..ba24c6b
--- /dev/null
+++ b/arch/microblaze/defconfig
@@ -0,0 +1,698 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.26-rc8
+# Thu Jun 26 12:13:43 2008
+#
+CONFIG_MICROBLAZE=y
+# CONFIG_MMU is not set
+# CONFIG_SWAP is not set
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_TIME=y
+# CONFIG_PCI is not set
+CONFIG_NO_DMA=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_HZ=100
+CONFIG_DEFCONFIG_LIST="arch/$ARCH/defconfig"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION="-mONStR"
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_POSIX_MQUEUE is not set
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=17
+# CONFIG_CGROUPS is not set
+# CONFIG_GROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+# CONFIG_HOTPLUG is not set
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_COMPAT_BRK=y
+# CONFIG_BASE_FULL is not set
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+# CONFIG_HAVE_OPROFILE is not set
+# CONFIG_HAVE_KPROBES is not set
+# CONFIG_HAVE_KRETPROBES is not set
+# CONFIG_HAVE_DMA_ATTRS is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_TINY_SHMEM=y
+CONFIG_BASE_SMALL=1
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+# CONFIG_KMOD is not set
+CONFIG_BLOCK=y
+# CONFIG_LBD is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+CONFIG_CLASSIC_RCU=y
+
+#
+# Platform options
+#
+CONFIG_PLATFORM_GENERIC=y
+CONFIG_SELFMOD=y
+CONFIG_SELFMOD_INTC=y
+CONFIG_SELFMOD_TIMER=y
+CONFIG_OPT_LIB_FUNCTION=y
+CONFIG_ALLOW_EDIT_AUTO=y
+
+#
+# Automatic platform settings from Kconfig.auto
+#
+
+#
+# Definitions for MICROBLAZE0
+#
+CONFIG_KERNEL_BASE_ADDR=0x20000000
+CONFIG_XILINX_MICROBLAZE0_FAMILY="spartan3e"
+CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
+CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
+CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
+CONFIG_XILINX_MICROBLAZE0_USE_HW_MULT=2
+CONFIG_XILINX_MICROBLAZE0_USE_FPU=0
+CONFIG_XILINX_MICROBLAZE0_HW_VER="7.00.b"
+
+#
+# Processor type and features
+#
+# CONFIG_PREEMPT is not set
+# CONFIG_LARGE_ALLOCS is not set
+# CONFIG_GENERIC_CLOCKEVENTS is not set
+
+#
+# Boot options
+#
+CONFIG_CMDLINE="root=/dev/mtdblock0"
+CONFIG_CMDLINE_FORCE=y
+CONFIG_OF=y
+CONFIG_OF_DEVICE=y
+CONFIG_PROC_DEVICETREE=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+CONFIG_VIRT_TO_BUS=y
+
+#
+# Exectuable file formats
+#
+CONFIG_BINFMT_FLAT=y
+# CONFIG_BINFMT_ZFLAT is not set
+# CONFIG_BINFMT_SHARED_FLAT is not set
+# CONFIG_BINFMT_MISC is not set
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_STANDALONE=y
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+CONFIG_MTD_CONCAT=y
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=y
+CONFIG_MTD_BLOCK=y
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+# CONFIG_MTD_JEDECPROBE is not set
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+CONFIG_MTD_CFI_INTELEXT=y
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+CONFIG_MTD_RAM=y
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_UCLINUX=y
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+CONFIG_BLK_DEV_NBD=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_HAVE_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_NETDEVICES is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+# CONFIG_SERIAL_8250 is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_UARTLITE=y
+CONFIG_SERIAL_UARTLITE_CONSOLE=y
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+CONFIG_HW_RANDOM=y
+# CONFIG_RTC is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_XILINX_HWICAP is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+CONFIG_DAB=y
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=y
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+CONFIG_USB_SUPPORT=y
+# CONFIG_USB_ARCH_HAS_HCD is not set
+# CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_ARCH_HAS_EHCI is not set
+# CONFIG_USB_OTG_WHITELIST is not set
+# CONFIG_USB_OTG_BLACKLIST_HUB is not set
+
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
+# CONFIG_USB_GADGET is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+# CONFIG_EXT2_FS is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY is not set
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+# CONFIG_TMPFS is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+CONFIG_ROMFS_FS=y
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+# CONFIG_NFS_FS is not set
+# CONFIG_NFSD is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+# CONFIG_MAGIC_SYSRQ is not set
+CONFIG_UNUSED_SYMBOLS=y
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_SHIRQ=y
+# CONFIG_DETECT_SOFTLOCKUP is not set
+CONFIG_SCHED_DEBUG=y
+CONFIG_SCHEDSTATS=y
+CONFIG_TIMER_STATS=y
+CONFIG_DEBUG_OBJECTS=y
+CONFIG_DEBUG_OBJECTS_SELFTEST=y
+CONFIG_DEBUG_OBJECTS_FREE=y
+CONFIG_DEBUG_OBJECTS_TIMERS=y
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_SG=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+CONFIG_EARLY_PRINTK=y
+CONFIG_EARLY_PRINTK_UARTLITE_ADDRESS=0x40100000
+CONFIG_HEART_BEAT=y
+CONFIG_HEART_BEAT_ADDRESS=0x40600000
+# CONFIG_DEBUG_BOOTMEM is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+# CONFIG_CRYPTO_MANAGER is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+# CONFIG_CRYPTO_CBC is not set
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_MD4 is not set
+# CONFIG_CRYPTO_MD5 is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_DES is not set
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_HW=y
+
+#
+# Library routines
+#
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+# CONFIG_CRC32 is not set
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAVE_LMB=y
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/signal.c | 531 +++++++++++++++++++++++++++++++++++++++
include/asm-microblaze/signal.h | 195 ++++++++++++++
2 files changed, 726 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/signal.c
create mode 100644 include/asm-microblaze/signal.h
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
new file mode 100644
index 0000000..6f133e3
--- /dev/null
+++ b/arch/microblaze/kernel/signal.c
@@ -0,0 +1,531 @@
+/*
+ * Signal handling
+ *
+ * Copyright (C) 2003,2004 John Williams <[email protected]>
+ * Copyright (C) 2001 NEC Corporation
+ * Copyright (C) 2001 Miles Bader <[email protected]>
+ * Copyright (C) 1999,2000 Niibe Yutaka & Kaz Kojima
+ * Copyright (C) 1991,1992 Linus Torvalds
+ *
+ * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
+ *
+ * This file was was derived from the sh version, arch/sh/kernel/signal.c
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/personality.h>
+#include <linux/percpu.h>
+#include <asm/entry.h>
+#include <asm/ucontext.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/signal.h>
+#include <asm/cacheflush.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_sycall);
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int
+sys_sigsuspend(old_sigset_t mask, struct pt_regs *regs)
+{
+ sigset_t saveset;
+
+ mask &= _BLOCKABLE;
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ siginitset(¤t->blocked, mask);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->r3 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(regs, &saveset, 1))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize,
+ struct pt_regs *regs)
+{
+ sigset_t saveset, newset;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset, unewset, sizeof(newset)))
+ return -EFAULT;
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->r3 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(regs, &saveset, 1))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+sys_sigaction(int sig, const struct old_sigaction *act,
+ struct old_sigaction *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if (act) {
+ old_sigset_t mask;
+ if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+ return -EFAULT;
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ __get_user(mask, &act->sa_mask);
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+ return -EFAULT;
+ __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+ }
+
+ return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
+ struct pt_regs *regs)
+{
+ return do_sigaltstack(uss, uoss, regs->r1);
+}
+
+/*
+ * Do a signal return; undo the signal stack.
+ */
+
+struct sigframe {
+ struct sigcontext sc;
+ unsigned long extramask[_NSIG_WORDS-1];
+ unsigned long tramp[2]; /* signal trampoline */
+};
+
+struct rt_sigframe {
+ struct siginfo info;
+ struct ucontext uc;
+ unsigned long tramp[2]; /* signal trampoline */
+};
+
+static int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc, int *rval_p)
+{
+ unsigned int err = 0;
+
+#define COPY(x) err |= __get_user(regs->x, &sc->regs.x)
+ COPY(r0); COPY(r1);
+ COPY(r2); COPY(r3); COPY(r4); COPY(r5);
+ COPY(r6); COPY(r7); COPY(r8); COPY(r9);
+ COPY(r10); COPY(r11); COPY(r12); COPY(r13);
+ COPY(r14); COPY(r15); COPY(r16); COPY(r17);
+ COPY(r18); COPY(r19); COPY(r20); COPY(r21);
+ COPY(r22); COPY(r23); COPY(r24); COPY(r25);
+ COPY(r26); COPY(r27); COPY(r28); COPY(r29);
+ COPY(r30); COPY(r31);
+ COPY(pc); COPY(ear); COPY(esr); COPY(fsr);
+#undef COPY
+
+ *rval_p = regs->r3;
+
+ return err;
+}
+
+asmlinkage int sys_sigreturn(struct pt_regs *regs)
+{
+ struct sigframe *frame = (struct sigframe *)regs->r1;
+ sigset_t set;
+ int rval;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+
+ if (__get_user(set.sig[0], &frame->sc.oldmask)
+ || (_NSIG_WORDS > 1
+ && __copy_from_user(&set.sig[1], &frame->extramask,
+ sizeof(frame->extramask))))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (restore_sigcontext(regs, &frame->sc, &rval))
+ goto badframe;
+ return rval;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
+{
+ struct rt_sigframe *frame = (struct rt_sigframe *)regs->r1;
+ sigset_t set;
+ stack_t st;
+ int rval;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+
+ if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
+ goto badframe;
+
+ if (__copy_from_user((void *)&st, &frame->uc.uc_stack, sizeof(st)))
+ goto badframe;
+ /* It is more difficult to avoid calling this function than to
+ call it and ignore errors. */
+ do_sigaltstack(&st, NULL, regs->r1);
+
+ return rval;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+/*
+ * Set up a signal frame.
+ */
+
+static int
+setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+ unsigned long mask)
+{
+ int err = 0;
+
+#define COPY(x) err |= __put_user(regs->x, &sc->regs.x)
+ COPY(r0); COPY(r1);
+ COPY(r2); COPY(r3); COPY(r4); COPY(r5);
+ COPY(r6); COPY(r7); COPY(r8); COPY(r9);
+ COPY(r10); COPY(r11); COPY(r12); COPY(r13);
+ COPY(r14); COPY(r15); COPY(r16); COPY(r17);
+ COPY(r18); COPY(r19); COPY(r20); COPY(r21);
+ COPY(r22); COPY(r23); COPY(r24); COPY(r25);
+ COPY(r26); COPY(r27); COPY(r28); COPY(r29);
+ COPY(r30); COPY(r31);
+ COPY(pc); COPY(ear); COPY(esr); COPY(fsr);
+#undef COPY
+
+ err |= __put_user(mask, &sc->oldmask);
+
+ return err;
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline void *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+{
+ /* Default to using normal stack */
+ unsigned long sp = regs->r1;
+
+ if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp))
+ sp = current->sas_ss_sp + current->sas_ss_size;
+
+ return (void *)((sp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct k_sigaction *ka,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct sigframe *frame;
+ int err = 0;
+ int signal;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto give_sigsegv;
+
+ signal = current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig;
+
+ err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
+
+ if (_NSIG_WORDS > 1) {
+ err |= __copy_to_user(frame->extramask, &set->sig[1],
+ sizeof(frame->extramask));
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ /* minus 8 is offset to cater for "rtsd r15,8" offset */
+ if (ka->sa.sa_flags & SA_RESTORER) {
+ regs->r15 = ((unsigned long)ka->sa.sa_restorer)-8;
+ } else {
+ /* Note, these encodings are _big endian_! */
+
+ /* addi r12, r0, __NR_sigreturn */
+ err |= __put_user(0x31800000 | __NR_sigreturn ,
+ frame->tramp + 0);
+ /* brki r14, 0x8 */
+ err |= __put_user(0xb9cc0008, frame->tramp + 1);
+
+ /* Return from sighandler will jump to the tramp.
+ Negative 8 offset because return is rtsd r15, 8 */
+ regs->r15 = ((unsigned long)frame->tramp)-8;
+
+ __invalidate_cache_sigtramp((unsigned long)frame->tramp);
+ }
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up registers for signal handler */
+ regs->r1 = (unsigned long) frame;
+ /* Signal handler args: */
+ regs->r5 = signal; /* Arg 0: signum */
+ regs->r6 = (unsigned long) &frame->sc; /* arg 1: sigcontext */
+
+ /* Offset of 4 to handle microblaze rtid r14, 0 */
+ regs->pc = (unsigned long)ka->sa.sa_handler;
+
+ set_fs(USER_DS);
+
+#ifdef DEBUG_SIG
+ printk(KERN_INFO "SIG deliver (%s:%d): sp=%p pc=%08lx\n",
+ current->comm, current->pid, frame, regs->pc);
+#endif
+
+ return;
+
+give_sigsegv:
+ if (sig == SIGSEGV)
+ ka->sa.sa_handler = SIG_DFL;
+ force_sig(SIGSEGV, current);
+}
+
+static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct rt_sigframe *frame;
+ int err = 0;
+ int signal;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto give_sigsegv;
+
+ signal = current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig;
+
+ err |= copy_siginfo_to_user(&frame->info, info);
+
+ /* Create the ucontext. */
+ err |= __put_user(0, &frame->uc.uc_flags);
+ err |= __put_user(0, &frame->uc.uc_link);
+ err |= __put_user((void *)current->sas_ss_sp,
+ &frame->uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(regs->r1),
+ &frame->uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= setup_sigcontext(&frame->uc.uc_mcontext,
+ regs, set->sig[0]);
+ err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ /* minus 8 is offset to cater for "rtsd r15,8" */
+ if (ka->sa.sa_flags & SA_RESTORER) {
+ regs->r15 = ((unsigned long)ka->sa.sa_restorer)-8;
+ } else {
+ /* addi r12, r0, __NR_sigreturn */
+ err |= __put_user(0x31800000 | __NR_rt_sigreturn ,
+ frame->tramp + 0);
+ /* brki r14, 0x8 */
+ err |= __put_user(0xb9cc0008, frame->tramp + 1);
+
+ /* Return from sighandler will jump to the tramp.
+ Negative 8 offset because return is rtsd r15, 8 */
+ regs->r15 = ((unsigned long)frame->tramp)-8;
+
+ __invalidate_cache_sigtramp((unsigned long)frame->tramp);
+ }
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up registers for signal handler */
+ regs->r1 = (unsigned long) frame;
+ /* Signal handler args: */
+ regs->r5 = signal; /* arg 0: signum */
+ regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */
+ regs->r7 = (unsigned long) &frame->uc; /* arg2: ucontext */
+ /* Offset to handle microblaze rtid r14, 0 */
+ regs->pc = (unsigned long)ka->sa.sa_handler;
+
+ set_fs(USER_DS);
+
+#ifdef DEBUG_SIG
+ printk(KERN_INFO "SIG deliver (%s:%d): sp=%p pc=%08lx\n",
+ current->comm, current->pid, frame, regs->pc);
+#endif
+
+ return;
+
+give_sigsegv:
+ if (sig == SIGSEGV)
+ ka->sa.sa_handler = SIG_DFL;
+ force_sig(SIGSEGV, current);
+}
+
+/* Handle restarting system calls */
+static inline void
+handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
+{
+ switch (regs->r3) {
+ case -ERESTART_RESTARTBLOCK:
+ case -ERESTARTNOHAND:
+ if (!has_handler)
+ goto do_restart;
+ regs->r3 = -EINTR;
+ break;
+ case -ERESTARTSYS:
+ if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
+ regs->r3 = -EINTR;
+ break;
+ }
+ /* fallthrough */
+ case -ERESTARTNOINTR:
+do_restart:
+ /* offset of 4 bytes to re-execute trap (brki) instruction */
+ regs->pc -= 4;
+ break;
+ }
+}
+
+/*
+ * OK, we're invoking a handler
+ */
+
+static void
+handle_signal(unsigned long sig, struct k_sigaction *ka,
+ siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
+{
+ /* Set up the stack frame */
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ setup_rt_frame(sig, ka, info, oldset, regs);
+ else
+ setup_frame(sig, ka, oldset, regs);
+
+ if (ka->sa.sa_flags & SA_ONESHOT)
+ ka->sa.sa_handler = SIG_DFL;
+
+ if (!(ka->sa.sa_flags & SA_NODEFER)) {
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked,
+ ¤t->blocked, &ka->sa.sa_mask);
+ sigaddset(¤t->blocked, sig);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ }
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ *
+ * Note that we go through the signals twice: once to check the signals that
+ * the kernel can handle, and then we build all the user-level signal handling
+ * stack-frames in one go after that.
+ */
+int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
+{
+ siginfo_t info;
+ int signr;
+ struct k_sigaction ka;
+#ifdef DEBUG_SIG
+ printk(KERN_INFO "do signal: %p %p %d\n", regs, oldset, in_syscall);
+ printk(KERN_INFO "do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1,
+ regs->r12, current_thread_info()->flags);
+#endif
+ /*
+ * We want the common case to go fast, which
+ * is why we may in certain cases get here from
+ * kernel mode. Just return without doing anything
+ * if so.
+ */
+ if (!user_mode(regs))
+ return 1;
+
+ if (!oldset)
+ oldset = ¤t->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ /* Whee! Actually deliver the signal. */
+ if (in_syscall)
+ handle_restart(regs, &ka, 1);
+ handle_signal(signr, &ka, &info, oldset, regs);
+ return 1;
+ }
+
+ if (in_syscall)
+ handle_restart(regs, NULL, 0);
+
+ /* Did we come from a system call? */
+ return 0;
+}
diff --git a/include/asm-microblaze/signal.h b/include/asm-microblaze/signal.h
new file mode 100644
index 0000000..63c05af
--- /dev/null
+++ b/include/asm-microblaze/signal.h
@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ * Yasushi SHOJI <[email protected]>
+ * Tetsuya OHKAWA <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_SIGNAL_H
+#define _ASM_MICROBLAZE_SIGNAL_H
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+#include <linux/linkage.h>
+
+/* Avoid too many header ordering problems. */
+struct siginfo;
+
+#ifdef __KERNEL__
+
+/* Most things should be clean enough to redefine this at will, if care
+ is taken to make libc match. */
+#define _NSIG 64
+#define _NSIG_BPW 32
+#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
+
+typedef unsigned long old_sigset_t; /* at least 32 bits */
+
+typedef struct {
+ unsigned long sig[_NSIG_WORDS];
+} sigset_t;
+
+#else /* !__KERNEL__ */
+
+/* Here we must cater to libcs that poke about in kernel headers. */
+
+#define NSIG 32
+typedef unsigned long sigset_t;
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASSEMBLY__ */
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT 6
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+/*
+#define SIGLOST 29
+*/
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED 31
+
+/* These should not be considered constants from userland. */
+#define SIGRTMIN 32
+#define SIGRTMAX _NSIG
+
+/*
+ * SA_FLAGS values:
+ *
+ * SA_ONSTACK indicates that a registered stack_t will be used.
+ * SA_RESTART flag to get restarting signals (which were the default long ago)
+ * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
+ * SA_RESETHAND clears the handler when the signal is delivered.
+ * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
+ * SA_NODEFER prevents the current signal from being masked in the handler.
+ *
+ * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
+ * Unix names RESETHAND and NODEFER respectively.
+ */
+#define SA_NOCLDSTOP 0x00000001
+#define SA_NOCLDWAIT 0x00000002
+#define SA_SIGINFO 0x00000004
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+
+#define SA_NOMASK SA_NODEFER
+#define SA_ONESHOT SA_RESETHAND
+
+#define SA_RESTORER 0x04000000
+
+/*
+ * sigaltstack controls
+ */
+#define SS_ONSTACK 1
+#define SS_DISABLE 2
+
+#define MINSIGSTKSZ 2048
+#define SIGSTKSZ 8192
+
+#ifndef __ASSEMBLY__
+#include <asm-generic/signal.h>
+
+#ifdef __KERNEL__
+
+struct old_sigaction {
+ __sighandler_t sa_handler;
+ old_sigset_t sa_mask;
+ unsigned long sa_flags;
+ void (*sa_restorer)(void);
+};
+
+struct sigaction {
+ __sighandler_t sa_handler;
+ unsigned long sa_flags;
+ void (*sa_restorer)(void);
+ sigset_t sa_mask; /* mask last for extensibility */
+};
+
+struct k_sigaction {
+ struct sigaction sa;
+};
+
+#else /* !__KERNEL__ */
+
+/* Here we must cater to libcs that poke about in kernel headers. */
+
+struct sigaction {
+ union {
+ __sighandler_t _sa_handler;
+ void (*_sa_sigaction)(int, struct siginfo *, void *);
+ } _u;
+ sigset_t sa_mask;
+ unsigned long sa_flags;
+ void (*sa_restorer)(void);
+};
+
+#define sa_handler _u._sa_handler
+#define sa_sigaction _u._sa_sigaction
+
+#endif /* __KERNEL__ */
+
+
+typedef struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+} stack_t;
+
+#ifdef __KERNEL__
+
+#include <asm/sigcontext.h>
+#undef __HAVE_ARCH_SIG_BITOPS
+
+#define ptrace_signal_deliver(regs, cookie) do { } while (0)
+
+#endif /* __KERNEL__ */
+
+asmlinkage int sys_sigsuspend(old_sigset_t mask, struct pt_regs *regs);
+asmlinkage int sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize,
+ struct pt_regs *regs);
+asmlinkage int sys_sigaction(int sig, const struct old_sigaction *act,
+ struct old_sigaction *oact);
+asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
+ struct pt_regs *regs);
+asmlinkage int sys_sigreturn(struct pt_regs *regs);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
+
+
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_MICROBLAZE_SIGNAL_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
drivers/of/Makefile | 2 +-
drivers/of/device.c | 128 ++++++
drivers/of/platform.c | 175 ++++++++
drivers/of/prom_parse.c | 1025 +++++++++++++++++++++++++++++++++++++++++++
include/linux/of_device.h | 9 +
include/linux/of_platform.h | 25 +
6 files changed, 1363 insertions(+), 1 deletions(-)
create mode 100644 drivers/of/prom_parse.c
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index 548772e..8d4961c 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,4 +1,4 @@
obj-y = base.o
-obj-$(CONFIG_OF_DEVICE) += device.o platform.o
+obj-$(CONFIG_OF_DEVICE) += device.o platform.o prom_parse.o
obj-$(CONFIG_OF_GPIO) += gpio.o
obj-$(CONFIG_OF_I2C) += of_i2c.o
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 29681c4..ef735ee 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -100,3 +100,131 @@ void of_device_unregister(struct of_device *ofdev)
device_unregister(&ofdev->dev);
}
EXPORT_SYMBOL(of_device_unregister);
+
+
+struct of_device *of_device_alloc(struct device_node *np,
+ const char *bus_id,
+ struct device *parent)
+{
+ struct of_device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ dev->node = of_node_get(np);
+ dev->dev.dma_mask = &dev->dma_mask;
+ dev->dev.parent = parent;
+ dev->dev.release = of_release_dev;
+ dev->dev.archdata.of_node = np;
+#ifdef CONFIG_NUMA
+ dev->dev.archdata.numa_node = of_node_to_nid(np);
+#endif
+
+ if (bus_id)
+ strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
+ else
+ of_device_make_bus_id(dev);
+
+ return dev;
+}
+EXPORT_SYMBOL(of_device_alloc);
+
+ssize_t of_device_get_modalias(struct of_device *ofdev,
+ char *str, ssize_t len)
+{
+ const char *compat;
+ int cplen, i;
+ ssize_t tsize, csize, repend;
+
+ /* Name & Type */
+ csize = snprintf(str, len, "of:N%sT%s",
+ ofdev->node->name, ofdev->node->type);
+
+ /* Get compatible property if any */
+ compat = of_get_property(ofdev->node, "compatible", &cplen);
+ if (!compat)
+ return csize;
+
+ /* Find true end (we tolerate multiple \0 at the end */
+ for (i = (cplen-1); i >= 0 && !compat[i]; i--)
+ cplen--;
+ if (!cplen)
+ return csize;
+ cplen++;
+
+ /* Check space (need cplen+1 chars including final \0) */
+ tsize = csize + cplen;
+ repend = tsize;
+
+ /* @ the limit, all is already filled */
+ if (csize >= len)
+ return tsize;
+
+ /* limit compat list */
+ if (tsize >= len) {
+ cplen = len - csize - 1;
+ repend = len;
+ }
+
+ /* Copy and do char replacement */
+ memcpy(&str[csize+1], compat, cplen);
+ for (i = csize; i < repend; i++) {
+ char c = str[i];
+ if (c == '\0')
+ str[i] = 'C';
+ else if (c == ' ')
+ str[i] = '_';
+ }
+
+ return tsize;
+}
+EXPORT_SYMBOL(of_device_get_modalias);
+
+int of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct of_device *ofdev;
+ const char *compat;
+ int seen = 0, cplen, sl;
+
+ if (!dev)
+ return -ENODEV;
+
+ ofdev = to_of_device(dev);
+
+ if (add_uevent_var(env, "OF_NAME=%s", ofdev->node->name))
+ return -ENOMEM;
+
+ if (add_uevent_var(env, "OF_TYPE=%s", ofdev->node->type))
+ return -ENOMEM;
+
+ /* Since the compatible field can contain pretty much anything
+ * it's not really legal to split it out with commas. We split it
+ * up using a number of environment variables instead. */
+
+ compat = of_get_property(ofdev->node, "compatible", &cplen);
+ while (compat && *compat && cplen > 0) {
+ if (add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat))
+ return -ENOMEM;
+
+ sl = strlen(compat) + 1;
+ compat += sl;
+ cplen -= sl;
+ seen++;
+ }
+
+ if (add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen))
+ return -ENOMEM;
+
+ /* modalias is trickier, we add it in 2 steps */
+ if (add_uevent_var(env, "MODALIAS="))
+ return -ENOMEM;
+ sl = of_device_get_modalias(ofdev, &env->buf[env->buflen-1],
+ sizeof(env->buf) - env->buflen);
+ if (sl >= (sizeof(env->buf) - env->buflen))
+ return -ENOMEM;
+ env->buflen += sl;
+
+ return 0;
+}
+EXPORT_SYMBOL(of_device_uevent);
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index ca09a63..06581e4 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -17,6 +17,17 @@
#include <linux/of_device.h>
#include <linux/of_platform.h>
+struct bus_type of_platform_bus_type = {
+ .uevent = of_device_uevent,
+};
+EXPORT_SYMBOL(of_platform_bus_type);
+
+static int __init of_bus_driver_init(void)
+{
+ return of_bus_type_init(&of_platform_bus_type, "of_platform");
+}
+postcore_initcall(of_bus_driver_init);
+
static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
{
struct of_device *of_dev = to_of_device(dev);
@@ -125,3 +136,167 @@ void of_unregister_driver(struct of_platform_driver *drv)
driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(of_unregister_driver);
+
+
+struct of_device* of_platform_device_create(struct device_node *np,
+ const char *bus_id,
+ struct device *parent)
+{
+ struct of_device *dev;
+
+ dev = of_device_alloc(np, bus_id, parent);
+ if (!dev)
+ return NULL;
+
+ dev->dma_mask = 0xffffffffUL;
+ dev->dev.bus = &of_platform_bus_type;
+
+ /* We do not fill the DMA ops for platform devices by default.
+ * This is currently the responsibility of the platform code
+ * to do such, possibly using a device notifier
+ */
+
+ if (of_device_register(dev) != 0) {
+ of_device_free(dev);
+ return NULL;
+ }
+
+ return dev;
+}
+EXPORT_SYMBOL(of_platform_device_create);
+
+
+
+/**
+ * of_platform_bus_create - Create an OF device for a bus node and all its
+ * children. Optionally recursively instanciate matching busses.
+ * @bus: device node of the bus to instanciate
+ * @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to
+ * disallow recursive creation of child busses
+ */
+static int of_platform_bus_create(const struct device_node *bus,
+ const struct of_device_id *matches,
+ struct device *parent)
+{
+ struct device_node *child;
+ struct of_device *dev;
+ int rc = 0;
+
+ for_each_child_of_node(bus, child) {
+ pr_debug(" create child: %s\n", child->full_name);
+ dev = of_platform_device_create(child, NULL, parent);
+ if (dev == NULL)
+ rc = -ENOMEM;
+ else if (!of_match_node(matches, child))
+ continue;
+ if (rc == 0) {
+ pr_debug(" and sub busses\n");
+ rc = of_platform_bus_create(child, matches, &dev->dev);
+ } if (rc) {
+ of_node_put(child);
+ break;
+ }
+ }
+ return rc;
+}
+
+/**
+ * of_platform_bus_probe - Probe the device-tree for platform busses
+ * @root: parent of the first level to probe or NULL for the root of the tree
+ * @matches: match table, NULL to use the default
+ * @parent: parent to hook devices from, NULL for toplevel
+ *
+ * Note that children of the provided root are not instanciated as devices
+ * unless the specified root itself matches the bus list and is not NULL.
+ */
+
+int of_platform_bus_probe(struct device_node *root,
+ const struct of_device_id *matches,
+ struct device *parent)
+{
+ struct device_node *child;
+ struct of_device *dev;
+ int rc = 0;
+
+ if (matches == NULL)
+ matches = of_default_bus_ids;
+ if (matches == OF_NO_DEEP_PROBE)
+ return -EINVAL;
+ if (root == NULL)
+ root = of_find_node_by_path("/");
+ else
+ of_node_get(root);
+
+ pr_debug("of_platform_bus_probe()\n");
+ pr_debug(" starting at: %s\n", root->full_name);
+
+ /* Do a self check of bus type, if there's a match, create
+ * children
+ */
+ if (of_match_node(matches, root)) {
+ pr_debug(" root match, create all sub devices\n");
+ dev = of_platform_device_create(root, NULL, parent);
+ if (dev == NULL) {
+ rc = -ENOMEM;
+ goto bail;
+ }
+ pr_debug(" create all sub busses\n");
+ rc = of_platform_bus_create(root, matches, &dev->dev);
+ goto bail;
+ }
+ for_each_child_of_node(root, child) {
+ if (!of_match_node(matches, child))
+ continue;
+
+ pr_debug(" match: %s\n", child->full_name);
+ dev = of_platform_device_create(child, NULL, parent);
+ if (dev == NULL)
+ rc = -ENOMEM;
+ else
+ rc = of_platform_bus_create(child, matches, &dev->dev);
+ if (rc) {
+ of_node_put(child);
+ break;
+ }
+ }
+ bail:
+ of_node_put(root);
+ return rc;
+}
+EXPORT_SYMBOL(of_platform_bus_probe);
+
+static int of_dev_node_match(struct device *dev, void *data)
+{
+ return to_of_device(dev)->node == data;
+}
+
+struct of_device *of_find_device_by_node(struct device_node *np)
+{
+ struct device *dev;
+
+ dev = bus_find_device(&of_platform_bus_type,
+ NULL, np, of_dev_node_match);
+ if (dev)
+ return to_of_device(dev);
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_device_by_node);
+
+static int of_dev_phandle_match(struct device *dev, void *data)
+{
+ phandle *ph = data;
+ return to_of_device(dev)->node->linux_phandle == *ph;
+}
+
+struct of_device *of_find_device_by_phandle(phandle ph)
+{
+ struct device *dev;
+
+ dev = bus_find_device(&of_platform_bus_type,
+ NULL, &ph, of_dev_phandle_match);
+ if (dev)
+ return to_of_device(dev);
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_device_by_phandle);
+
diff --git a/drivers/of/prom_parse.c b/drivers/of/prom_parse.c
new file mode 100644
index 0000000..683c20c
--- /dev/null
+++ b/drivers/of/prom_parse.c
@@ -0,0 +1,1025 @@
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/pci_regs.h>
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/etherdevice.h>
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+
+#define PRu64 "%llx"
+
+/* Max address size we deal with */
+#define OF_MAX_ADDR_CELLS 4
+#define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
+ (ns) > 0)
+
+static struct of_bus *of_match_bus(struct device_node *np);
+static int __of_address_to_resource(struct device_node *dev,
+ const u32 *addrp, u64 size, unsigned int flags,
+ struct resource *r);
+
+/* Debug utility */
+#ifdef DEBUG
+static void of_dump_addr(const char *s, const u32 *addr, int na)
+{
+ printk("%s", s);
+ while (na--)
+ printk(KERN_INFO " %08x", *(addr++));
+ printk("\n");
+}
+#else
+static void of_dump_addr(const char *s, const u32 *addr, int na) { }
+#endif
+
+/* Callbacks for bus specific translators */
+struct of_bus {
+ const char *name;
+ const char *addresses;
+ int (*match)(struct device_node *parent);
+ void (*count_cells)(struct device_node *child,
+ int *addrc, int *sizec);
+ u64 (*map)(u32 *addr, const u32 *range,
+ int na, int ns, int pna);
+ int (*translate)(u32 *addr, u64 offset, int na);
+ unsigned int (*get_flags)(const u32 *addr);
+};
+
+/*
+ * Default translator (generic bus)
+ */
+
+static void of_bus_default_count_cells(struct device_node *dev,
+ int *addrc, int *sizec)
+{
+ if (addrc)
+ *addrc = of_n_addr_cells(dev);
+ if (sizec)
+ *sizec = of_n_size_cells(dev);
+}
+
+static u64 of_bus_default_map(u32 *addr, const u32 *range,
+ int na, int ns, int pna)
+{
+ u64 cp, s, da;
+
+ cp = of_read_number(range, na);
+ s = of_read_number(range + na + pna, ns);
+ da = of_read_number(addr, na);
+
+ pr_debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n",
+ cp, s, da);
+
+ if (da < cp || da >= (cp + s))
+ return OF_BAD_ADDR;
+ return da - cp;
+}
+
+static int of_bus_default_translate(u32 *addr, u64 offset, int na)
+{
+ u64 a = of_read_number(addr, na);
+ memset(addr, 0, na * 4);
+ a += offset;
+ if (na > 1)
+ addr[na - 2] = a >> 32;
+ addr[na - 1] = a & 0xffffffffu;
+
+ return 0;
+}
+
+static unsigned int of_bus_default_get_flags(const u32 *addr)
+{
+ return IORESOURCE_MEM;
+}
+
+#ifdef CONFIG_PCI
+/*
+ * PCI bus specific translator
+ */
+
+static int of_bus_pci_match(struct device_node *np)
+{
+ /* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */
+ return !strcmp(np->type, "pci") || !strcmp(np->type, "vci");
+}
+
+static void of_bus_pci_count_cells(struct device_node *np,
+ int *addrc, int *sizec)
+{
+ if (addrc)
+ *addrc = 3;
+ if (sizec)
+ *sizec = 2;
+}
+
+static u64 of_bus_pci_map(u32 *addr, const u32 *range, int na, int ns, int pna)
+{
+ u64 cp, s, da;
+
+ /* Check address type match */
+ if ((addr[0] ^ range[0]) & 0x03000000)
+ return OF_BAD_ADDR;
+
+ /* Read address values, skipping high cell */
+ cp = of_read_number(range + 1, na - 1);
+ s = of_read_number(range + na + pna, ns);
+ da = of_read_number(addr + 1, na - 1);
+
+ pr_debug("OF: PCI map, cp="PRu64", s="PRu64", da="PRu64"\n", cp, s, da);
+
+ if (da < cp || da >= (cp + s))
+ return OF_BAD_ADDR;
+ return da - cp;
+}
+
+static int of_bus_pci_translate(u32 *addr, u64 offset, int na)
+{
+ return of_bus_default_translate(addr + 1, offset, na - 1);
+}
+
+static unsigned int of_bus_pci_get_flags(const u32 *addr)
+{
+ unsigned int flags = 0;
+ u32 w = addr[0];
+
+ switch ((w >> 24) & 0x03) {
+ case 0x01:
+ flags |= IORESOURCE_IO;
+ break;
+ case 0x02: /* 32 bits */
+ case 0x03: /* 64 bits */
+ flags |= IORESOURCE_MEM;
+ break;
+ }
+ if (w & 0x40000000)
+ flags |= IORESOURCE_PREFETCH;
+ return flags;
+}
+
+const u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
+ unsigned int *flags)
+{
+ const u32 *prop;
+ unsigned int psize;
+ struct device_node *parent;
+ struct of_bus *bus;
+ int onesize, i, na, ns;
+
+ /* Get parent & match bus type */
+ parent = of_get_parent(dev);
+ if (parent == NULL)
+ return NULL;
+ bus = of_match_bus(parent);
+ if (strcmp(bus->name, "pci")) {
+ of_node_put(parent);
+ return NULL;
+ }
+ bus->count_cells(dev, &na, &ns);
+ of_node_put(parent);
+ if (!OF_CHECK_COUNTS(na, ns))
+ return NULL;
+
+ /* Get "reg" or "assigned-addresses" property */
+ prop = of_get_property(dev, bus->addresses, &psize);
+ if (prop == NULL)
+ return NULL;
+ psize /= 4;
+
+ onesize = na + ns;
+ for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++)
+ if ((prop[0] & 0xff) == ((bar_no * 4) + PCI_BASE_ADDRESS_0)) {
+ if (size)
+ *size = of_read_number(prop + na, ns);
+ if (flags)
+ *flags = bus->get_flags(prop);
+ return prop;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(of_get_pci_address);
+
+int of_pci_address_to_resource(struct device_node *dev, int bar,
+ struct resource *r)
+{
+ const u32 *addrp;
+ u64 size;
+ unsigned int flags;
+
+ addrp = of_get_pci_address(dev, bar, &size, &flags);
+ if (addrp == NULL)
+ return -EINVAL;
+ return __of_address_to_resource(dev, addrp, size, flags, r);
+}
+EXPORT_SYMBOL_GPL(of_pci_address_to_resource);
+
+static u8 of_irq_pci_swizzle(u8 slot, u8 pin)
+{
+ return (((pin - 1) + slot) % 4) + 1;
+}
+
+int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
+{
+ struct device_node *dn, *ppnode;
+ struct pci_dev *ppdev;
+ u32 lspec;
+ u32 laddr[3];
+ u8 pin;
+ int rc;
+
+ /* Check if we have a device node, if yes, fallback to standard OF
+ * parsing
+ */
+ dn = pci_device_to_OF_node(pdev);
+ if (dn)
+ return of_irq_map_one(dn, 0, out_irq);
+
+ /* Ok, we don't, time to have fun. Let's start by building up an
+ * interrupt spec. we assume #interrupt-cells is 1, which is standard
+ * for PCI. If you do different, then don't use that routine.
+ */
+ rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
+ if (rc != 0)
+ return rc;
+ /* No pin, exit */
+ if (pin == 0)
+ return -ENODEV;
+
+ /* Now we walk up the PCI tree */
+ lspec = pin;
+ for (;;) {
+ /* Get the pci_dev of our parent */
+ ppdev = pdev->bus->self;
+
+ /* Ouch, it's a host bridge... */
+ if (ppdev == NULL) {
+ struct pci_controller *host;
+ host = pci_bus_to_host(pdev->bus);
+ ppnode = host ? host->arch_data : NULL;
+ /* No node for host bridge ? give up */
+ if (ppnode == NULL)
+ return -EINVAL;
+ } else
+ /* We found a P2P bridge, check if it has a node */
+ ppnode = pci_device_to_OF_node(ppdev);
+
+ /* Ok, we have found a parent with a device-node, hand over to
+ * the OF parsing code.
+ * We build a unit address from the linux device to be used for
+ * resolution. Note that we use the linux bus number which may
+ * not match your firmware bus numbering.
+ * Fortunately, in most cases, interrupt-map-mask doesn't
+ * include the bus number as part of the matching.
+ * You should still be careful about that though if you intend
+ * to rely on this function (you ship a firmware that doesn't
+ * create device nodes for all PCI devices).
+ */
+ if (ppnode)
+ break;
+
+ /* We can only get here if we hit a P2P bridge with no node,
+ * let's do standard swizzling and try again
+ */
+ lspec = of_irq_pci_swizzle(PCI_SLOT(pdev->devfn), lspec);
+ pdev = ppdev;
+ }
+
+ laddr[0] = (pdev->bus->number << 16)
+ | (pdev->devfn << 8);
+ laddr[1] = laddr[2] = 0;
+ return of_irq_map_raw(ppnode, &lspec, 1, laddr, out_irq);
+}
+EXPORT_SYMBOL_GPL(of_irq_map_pci);
+#endif /* CONFIG_PCI */
+
+/*
+ * ISA bus specific translator
+ */
+
+static int of_bus_isa_match(struct device_node *np)
+{
+ return !strcmp(np->name, "isa");
+}
+
+static void of_bus_isa_count_cells(struct device_node *child,
+ int *addrc, int *sizec)
+{
+ if (addrc)
+ *addrc = 2;
+ if (sizec)
+ *sizec = 1;
+}
+
+static u64 of_bus_isa_map(u32 *addr, const u32 *range, int na, int ns, int pna)
+{
+ u64 cp, s, da;
+
+ /* Check address type match */
+ if ((addr[0] ^ range[0]) & 0x00000001)
+ return OF_BAD_ADDR;
+
+ /* Read address values, skipping high cell */
+ cp = of_read_number(range + 1, na - 1);
+ s = of_read_number(range + na + pna, ns);
+ da = of_read_number(addr + 1, na - 1);
+
+ pr_debug("OF: ISA map, cp="PRu64", s="PRu64", da="PRu64"\n", cp, s, da);
+
+ if (da < cp || da >= (cp + s))
+ return OF_BAD_ADDR;
+ return da - cp;
+}
+
+static int of_bus_isa_translate(u32 *addr, u64 offset, int na)
+{
+ return of_bus_default_translate(addr + 1, offset, na - 1);
+}
+
+static unsigned int of_bus_isa_get_flags(const u32 *addr)
+{
+ unsigned int flags = 0;
+ u32 w = addr[0];
+
+ if (w & 1)
+ flags |= IORESOURCE_IO;
+ else
+ flags |= IORESOURCE_MEM;
+ return flags;
+}
+
+/*
+ * Array of bus specific translators
+ */
+
+static struct of_bus of_busses[] = {
+#ifdef CONFIG_PCI
+ /* PCI */
+ {
+ .name = "pci",
+ .addresses = "assigned-addresses",
+ .match = of_bus_pci_match,
+ .count_cells = of_bus_pci_count_cells,
+ .map = of_bus_pci_map,
+ .translate = of_bus_pci_translate,
+ .get_flags = of_bus_pci_get_flags,
+ },
+#endif /* CONFIG_PCI */
+ /* ISA */
+ {
+ .name = "isa",
+ .addresses = "reg",
+ .match = of_bus_isa_match,
+ .count_cells = of_bus_isa_count_cells,
+ .map = of_bus_isa_map,
+ .translate = of_bus_isa_translate,
+ .get_flags = of_bus_isa_get_flags,
+ },
+ /* Default */
+ {
+ .name = "default",
+ .addresses = "reg",
+ .match = NULL,
+ .count_cells = of_bus_default_count_cells,
+ .map = of_bus_default_map,
+ .translate = of_bus_default_translate,
+ .get_flags = of_bus_default_get_flags,
+ },
+};
+
+static struct of_bus *of_match_bus(struct device_node *np)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(of_busses); i++)
+ if (!of_busses[i].match || of_busses[i].match(np))
+ return &of_busses[i];
+ BUG();
+ return NULL;
+}
+
+static int of_translate_one(struct device_node *parent, struct of_bus *bus,
+ struct of_bus *pbus, u32 *addr,
+ int na, int ns, int pna)
+{
+ const u32 *ranges;
+ unsigned int rlen;
+ int rone;
+ u64 offset = OF_BAD_ADDR;
+
+ /* Normally, an absence of a "ranges" property means we are
+ * crossing a non-translatable boundary, and thus the addresses
+ * below the current not cannot be converted to CPU physical ones.
+ * Unfortunately, while this is very clear in the spec, it's not
+ * what Apple understood, and they do have things like /uni-n or
+ * /ht nodes with no "ranges" property and a lot of perfectly
+ * useable mapped devices below them. Thus we treat the absence of
+ * "ranges" as equivalent to an empty "ranges" property which means
+ * a 1:1 translation at that level. It's up to the caller not to try
+ * to translate addresses that aren't supposed to be translated in
+ * the first place. --BenH.
+ */
+ ranges = of_get_property(parent, "ranges", (int *) &rlen);
+ if (ranges == NULL || rlen == 0) {
+ offset = of_read_number(addr, na);
+ memset(addr, 0, pna * 4);
+ pr_debug("OF: no ranges, 1:1 translation\n");
+ goto finish;
+ }
+
+ pr_debug("OF: walking ranges...\n");
+
+ /* Now walk through the ranges */
+ rlen /= 4;
+ rone = na + pna + ns;
+ for (; rlen >= rone; rlen -= rone, ranges += rone) {
+ offset = bus->map(addr, ranges, na, ns, pna);
+ if (offset != OF_BAD_ADDR)
+ break;
+ }
+ if (offset == OF_BAD_ADDR) {
+ pr_debug("OF: not found !\n");
+ return 1;
+ }
+ memcpy(addr, ranges + na, 4 * pna);
+
+ finish:
+ of_dump_addr("OF: parent translation for:", addr, pna);
+ pr_debug("OF: with offset: "PRu64"\n", offset);
+
+ /* Translate it into parent bus space */
+ return pbus->translate(addr, offset, pna);
+}
+
+/*
+ * Translate an address from the device-tree into a CPU physical address,
+ * this walks up the tree and applies the various bus mappings on the
+ * way.
+ *
+ * Note: We consider that crossing any level with #size-cells == 0 to mean
+ * that translation is impossible (that is we are not dealing with a value
+ * that can be mapped to a cpu physical address). This is not really specified
+ * that way, but this is traditionally the way IBM at least do things
+ */
+u64 of_translate_address(struct device_node *dev, const u32 *in_addr)
+{
+ struct device_node *parent = NULL;
+ struct of_bus *bus, *pbus;
+ u32 addr[OF_MAX_ADDR_CELLS];
+ int na, ns, pna, pns;
+ u64 result = OF_BAD_ADDR;
+
+ pr_debug("OF: ** translation for device %s **\n", dev->full_name);
+
+ /* Increase refcount at current level */
+ of_node_get(dev);
+
+ /* Get parent & match bus type */
+ parent = of_get_parent(dev);
+ if (parent == NULL)
+ goto bail;
+ bus = of_match_bus(parent);
+
+ /* Cound address cells & copy address locally */
+ bus->count_cells(dev, &na, &ns);
+ if (!OF_CHECK_COUNTS(na, ns)) {
+ printk(KERN_ERR "prom_parse: Bad cell count for %s\n",
+ dev->full_name);
+ goto bail;
+ }
+ memcpy(addr, in_addr, na * 4);
+
+ pr_debug("OF: bus is %s (na=%d, ns=%d) on %s\n",
+ bus->name, na, ns, parent->full_name);
+ of_dump_addr("OF: translating address:", addr, na);
+
+ /* Translate */
+ for (;;) {
+ /* Switch to parent bus */
+ of_node_put(dev);
+ dev = parent;
+ parent = of_get_parent(dev);
+
+ /* If root, we have finished */
+ if (parent == NULL) {
+ pr_debug("OF: reached root node\n");
+ result = of_read_number(addr, na);
+ break;
+ }
+
+ /* Get new parent bus and counts */
+ pbus = of_match_bus(parent);
+ pbus->count_cells(dev, &pna, &pns);
+ if (!OF_CHECK_COUNTS(pna, pns)) {
+ printk(KERN_ERR "prom_parse: Bad cell count for %s\n",
+ dev->full_name);
+ break;
+ }
+
+ pr_debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n",
+ pbus->name, pna, pns, parent->full_name);
+
+ /* Apply bus translation */
+ if (of_translate_one(dev, bus, pbus, addr, na, ns, pna))
+ break;
+
+ /* Complete the move up one level */
+ na = pna;
+ ns = pns;
+ bus = pbus;
+
+ of_dump_addr("OF: one level translation:", addr, na);
+ }
+ bail:
+ of_node_put(parent);
+ of_node_put(dev);
+
+ return result;
+}
+EXPORT_SYMBOL(of_translate_address);
+
+const u32 *of_get_address(struct device_node *dev, int index, u64 *size,
+ unsigned int *flags)
+{
+ const u32 *prop;
+ unsigned int psize;
+ struct device_node *parent;
+ struct of_bus *bus;
+ int onesize, i, na, ns;
+
+ /* Get parent & match bus type */
+ parent = of_get_parent(dev);
+ if (parent == NULL)
+ return NULL;
+ bus = of_match_bus(parent);
+ bus->count_cells(dev, &na, &ns);
+ of_node_put(parent);
+ if (!OF_CHECK_COUNTS(na, ns))
+ return NULL;
+
+ /* Get "reg" or "assigned-addresses" property */
+ prop = of_get_property(dev, bus->addresses, (int *) &psize);
+ if (prop == NULL)
+ return NULL;
+ psize /= 4;
+
+ onesize = na + ns;
+ for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++)
+ if (i == index) {
+ if (size)
+ *size = of_read_number(prop + na, ns);
+ if (flags)
+ *flags = bus->get_flags(prop);
+ return prop;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(of_get_address);
+
+static int __of_address_to_resource(struct device_node *dev, const u32 *addrp,
+ u64 size, unsigned int flags,
+ struct resource *r)
+{
+ u64 taddr;
+
+ if ((flags & (IORESOURCE_IO | IORESOURCE_MEM)) == 0)
+ return -EINVAL;
+ taddr = of_translate_address(dev, addrp);
+ if (taddr == OF_BAD_ADDR)
+ return -EINVAL;
+ memset(r, 0, sizeof(struct resource));
+ if (flags & IORESOURCE_IO) {
+ unsigned long port;
+ port = -1; /* pci_address_to_pio(taddr); */
+ if (port == (unsigned long)-1)
+ return -EINVAL;
+ r->start = port;
+ r->end = port + size - 1;
+ } else {
+ r->start = taddr;
+ r->end = taddr + size - 1;
+ }
+ r->flags = flags;
+ r->name = dev->name;
+ return 0;
+}
+
+int of_address_to_resource(struct device_node *dev, int index,
+ struct resource *r)
+{
+ const u32 *addrp;
+ u64 size;
+ unsigned int flags;
+
+ addrp = of_get_address(dev, index, &size, &flags);
+ if (addrp == NULL)
+ return -EINVAL;
+ return __of_address_to_resource(dev, addrp, size, flags, r);
+}
+EXPORT_SYMBOL_GPL(of_address_to_resource);
+
+void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
+ unsigned long *busno, unsigned long *phys, unsigned long *size)
+{
+ const u32 *dma_window;
+ u32 cells;
+ const unsigned char *prop;
+
+ dma_window = dma_window_prop;
+
+ /* busno is always one cell */
+ *busno = *(dma_window++);
+
+ prop = of_get_property(dn, "ibm,#dma-address-cells", NULL);
+ if (!prop)
+ prop = of_get_property(dn, "#address-cells", NULL);
+
+ cells = prop ? *(u32 *)prop : of_n_addr_cells(dn);
+ *phys = of_read_number(dma_window, cells);
+
+ dma_window += cells;
+
+ prop = of_get_property(dn, "ibm,#dma-size-cells", NULL);
+ cells = prop ? *(u32 *)prop : of_n_size_cells(dn);
+ *size = of_read_number(dma_window, cells);
+}
+
+/*
+ * Interrupt remapper
+ */
+
+static unsigned int of_irq_workarounds;
+static struct device_node *of_irq_dflt_pic;
+
+static struct device_node *of_irq_find_parent(struct device_node *child)
+{
+ struct device_node *p;
+ const phandle *parp;
+
+ if (!of_node_get(child))
+ return NULL;
+
+ do {
+ parp = of_get_property(child, "interrupt-parent", NULL);
+ if (parp == NULL)
+ p = of_get_parent(child);
+ else {
+ if (of_irq_workarounds & OF_IMAP_NO_PHANDLE)
+ p = of_node_get(of_irq_dflt_pic);
+ else
+ p = of_find_node_by_phandle(*parp);
+ }
+ of_node_put(child);
+ child = p;
+ } while (p && of_get_property(p, "#interrupt-cells", NULL) == NULL);
+
+ return p;
+}
+
+/* This doesn't need to be called if you don't have any special workaround
+ * flags to pass
+ */
+void of_irq_map_init(unsigned int flags)
+{
+ of_irq_workarounds = flags;
+
+ /* OldWorld, don't bother looking at other things */
+ if (flags & OF_IMAP_OLDWORLD_MAC)
+ return;
+
+ /* If we don't have phandles, let's try to locate a default interrupt
+ * controller (happens when booting with BootX). We do a first match
+ * here, hopefully, that only ever happens on machines with one
+ * controller.
+ */
+ if (flags & OF_IMAP_NO_PHANDLE) {
+ struct device_node *np;
+
+ for (np = NULL; (np = of_find_all_nodes(np)) != NULL;) {
+ if (of_get_property(np, "interrupt-controller", NULL)
+ == NULL)
+ continue;
+ /* Skip /chosen/interrupt-controller */
+ if (strcmp(np->name, "chosen") == 0)
+ continue;
+ /* It seems like at least one person on this planet
+ * wants to use BootX on a machine with an AppleKiwi
+ * controller which happens to pretend to be an
+ * interrupt controller too.
+ */
+ if (strcmp(np->name, "AppleKiwi") == 0)
+ continue;
+ /* I think we found one ! */
+ of_irq_dflt_pic = np;
+ break;
+ }
+ }
+
+}
+
+int of_irq_map_raw(struct device_node *parent, const u32 *intspec, u32 ointsize,
+ const u32 *addr, struct of_irq *out_irq)
+{
+ struct device_node *ipar, *tnode, *old = NULL, *newpar = NULL;
+ const u32 *tmp, *imap, *imask;
+ u32 intsize = 1, addrsize, newintsize = 0, newaddrsize = 0;
+ int imaplen, match, i;
+
+ pr_debug("of_irq_map_raw: par=%s,intspec=[0x%08x 0x%08x...],"
+ "ointsize=%d\n",
+ parent->full_name, intspec[0], intspec[1], ointsize);
+
+ ipar = of_node_get(parent);
+
+ /* First get the #interrupt-cells property of the current cursor
+ * that tells us how to interpret the passed-in intspec. If there
+ * is none, we are nice and just walk up the tree
+ */
+ do {
+ tmp = of_get_property(ipar, "#interrupt-cells", NULL);
+ if (tmp != NULL) {
+ intsize = *tmp;
+ break;
+ }
+ tnode = ipar;
+ ipar = of_irq_find_parent(ipar);
+ of_node_put(tnode);
+ } while (ipar);
+ if (ipar == NULL) {
+ pr_debug(" -> no parent found !\n");
+ goto fail;
+ }
+
+ pr_debug("of_irq_map_raw: ipar=%s, size=%d\n",
+ ipar->full_name, intsize);
+
+ if (ointsize != intsize)
+ return -EINVAL;
+
+ /* Look for this #address-cells. We have to implement the old linux
+ * trick of looking for the parent here as some device-trees rely on it
+ */
+ old = of_node_get(ipar);
+ do {
+ tmp = of_get_property(old, "#address-cells", NULL);
+ tnode = of_get_parent(old);
+ of_node_put(old);
+ old = tnode;
+ } while (old && tmp == NULL);
+ of_node_put(old);
+ old = NULL;
+ addrsize = (tmp == NULL) ? 2 : *tmp;
+
+ pr_debug(" -> addrsize=%d\n", addrsize);
+
+ /* Now start the actual "proper" walk of the interrupt tree */
+ while (ipar != NULL) {
+ /* Now check if cursor is an interrupt-controller and if it is
+ * then we are done
+ */
+ if (of_get_property(ipar, "interrupt-controller", NULL) !=
+ NULL) {
+ pr_debug(" -> got it !\n");
+ memcpy(out_irq->specifier, intspec,
+ intsize * sizeof(u32));
+ out_irq->size = intsize;
+ out_irq->controller = ipar;
+ of_node_put(old);
+ return 0;
+ }
+
+ /* Now look for an interrupt-map */
+ imap = of_get_property(ipar, "interrupt-map", &imaplen);
+ /* No interrupt map, check for an interrupt parent */
+ if (imap == NULL) {
+ pr_debug(" -> no map, getting parent\n");
+ newpar = of_irq_find_parent(ipar);
+ goto skiplevel;
+ }
+ imaplen /= sizeof(u32);
+
+ /* Look for a mask */
+ imask = of_get_property(ipar, "interrupt-map-mask", NULL);
+
+ /* If we were passed no "reg" property and we attempt to parse
+ * an interrupt-map, then #address-cells must be 0.
+ * Fail if it's not.
+ */
+ if (addr == NULL && addrsize != 0) {
+ pr_debug(" -> no reg passed in when needed !\n");
+ goto fail;
+ }
+
+ /* Parse interrupt-map */
+ match = 0;
+ while (imaplen > (addrsize + intsize + 1) && !match) {
+ /* Compare specifiers */
+ match = 1;
+ for (i = 0; i < addrsize && match; ++i) {
+ u32 mask = imask ? imask[i] : 0xffffffffu;
+ match = ((addr[i] ^ imap[i]) & mask) == 0;
+ }
+ for (; i < (addrsize + intsize) && match; ++i) {
+ u32 mask = imask ? imask[i] : 0xffffffffu;
+ match =
+ ((intspec[i-addrsize] ^ imap[i])
+ & mask) == 0;
+ }
+ imap += addrsize + intsize;
+ imaplen -= addrsize + intsize;
+
+ pr_debug(" -> match=%d (imaplen=%d)\n", match, imaplen);
+
+ /* Get the interrupt parent */
+ if (of_irq_workarounds & OF_IMAP_NO_PHANDLE)
+ newpar = of_node_get(of_irq_dflt_pic);
+ else
+ newpar =
+ of_find_node_by_phandle((phandle)*imap);
+ imap++;
+ --imaplen;
+
+ /* Check if not found */
+ if (newpar == NULL) {
+ pr_debug(" -> imap parent not found !\n");
+ goto fail;
+ }
+
+ /* Get #interrupt-cells and #address-cells of new
+ * parent
+ */
+ tmp = of_get_property(newpar, "#interrupt-cells", NULL);
+ if (tmp == NULL) {
+ pr_debug(" -> parent lacks "
+ "#interrupt-cells!\n");
+ goto fail;
+ }
+ newintsize = *tmp;
+ tmp = of_get_property(newpar, "#address-cells", NULL);
+ newaddrsize = (tmp == NULL) ? 0 : *tmp;
+
+ pr_debug(" -> newintsize=%d, newaddrsize=%d\n",
+ newintsize, newaddrsize);
+
+ /* Check for malformed properties */
+ if (imaplen < (newaddrsize + newintsize))
+ goto fail;
+
+ imap += newaddrsize + newintsize;
+ imaplen -= newaddrsize + newintsize;
+
+ pr_debug(" -> imaplen=%d\n", imaplen);
+ }
+ if (!match)
+ goto fail;
+
+ of_node_put(old);
+ old = of_node_get(newpar);
+ addrsize = newaddrsize;
+ intsize = newintsize;
+ intspec = imap - intsize;
+ addr = intspec - addrsize;
+
+skiplevel:
+ /* Iterate again with new parent */
+ pr_debug(" -> new parent: %s\n",
+ newpar ? newpar->full_name : "<>");
+ of_node_put(ipar);
+ ipar = newpar;
+ newpar = NULL;
+ }
+fail:
+ of_node_put(ipar);
+ of_node_put(old);
+ of_node_put(newpar);
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(of_irq_map_raw);
+
+int of_irq_map_one(struct device_node *device,
+ int index, struct of_irq *out_irq)
+{
+ struct device_node *p;
+ const u32 *intspec, *tmp, *addr;
+ u32 intsize, intlen;
+ int res;
+
+ pr_debug("of_irq_map_one: dev=%s, index=%d\n",
+ device->full_name, index);
+
+ /* Get the interrupts property */
+ intspec = of_get_property(device, "interrupts", (int *) &intlen);
+ if (intspec == NULL)
+ return -EINVAL;
+ intlen /= sizeof(u32);
+
+ pr_debug(" intspec=%d intlen=%d\n", *intspec, intlen);
+
+ /* Get the reg property (if any) */
+ addr = of_get_property(device, "reg", NULL);
+
+ /* Look for the interrupt parent. */
+ p = of_irq_find_parent(device);
+ if (p == NULL)
+ return -EINVAL;
+
+ /* Get size of interrupt specifier */
+ tmp = of_get_property(p, "#interrupt-cells", NULL);
+ if (tmp == NULL) {
+ of_node_put(p);
+ return -EINVAL;
+ }
+ intsize = *tmp;
+
+ pr_debug(" intsize=%d intlen=%d\n", intsize, intlen);
+
+ /* Check index */
+ if ((index + 1) * intsize > intlen)
+ return -EINVAL;
+
+ /* Get new specifier and map it */
+ res = of_irq_map_raw(p, intspec + index * intsize, intsize,
+ addr, out_irq);
+ of_node_put(p);
+ return res;
+}
+EXPORT_SYMBOL_GPL(of_irq_map_one);
+
+/**
+ * Search the device tree for the best MAC address to use. 'mac-address' is
+ * checked first, because that is supposed to contain to "most recent" MAC
+ * address. If that isn't set, then 'local-mac-address' is checked next,
+ * because that is the default address. If that isn't set, then the obsolete
+ * 'address' is checked, just in case we're using an old device tree.
+ *
+ * Note that the 'address' property is supposed to contain a virtual address of
+ * the register set, but some DTS files have redefined that property to be the
+ * MAC address.
+ *
+ * All-zero MAC addresses are rejected, because those could be properties that
+ * exist in the device tree, but were not set by U-Boot. For example, the
+ * DTS could define 'mac-address' and 'local-mac-address', with zero MAC
+ * addresses. Some older U-Boots only initialized 'local-mac-address'. In
+ * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
+ * but is all zeros.
+*/
+const void *of_get_mac_address(struct device_node *np)
+{
+ struct property *pp;
+
+ pp = of_find_property(np, "mac-address", NULL);
+ if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
+ return pp->value;
+
+ pp = of_find_property(np, "local-mac-address", NULL);
+ if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
+ return pp->value;
+
+ pp = of_find_property(np, "address", NULL);
+ if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
+ return pp->value;
+
+ return NULL;
+}
+EXPORT_SYMBOL(of_get_mac_address);
+
+int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
+{
+ struct of_irq out_irq;
+ int irq;
+ int res;
+
+ res = of_irq_map_one(dev, index, &out_irq);
+
+ /* Get irq for the device */
+ if (res) {
+ pr_debug("IRQ not found... code = %d", res);
+ return NO_IRQ;
+ }
+ /* Assuming single interrupt controller... */
+ irq = out_irq.specifier[0];
+
+ pr_debug("IRQ found = %d", irq);
+
+ /* Only dereference the resource if both the
+ * resource and the irq are valid. */
+ if (r && irq != NO_IRQ) {
+ r->start = r->end = irq;
+ r->flags = IORESOURCE_IRQ;
+ }
+
+ return irq;
+}
+EXPORT_SYMBOL_GPL(of_irq_to_resource);
+
+void __iomem *of_iomap(struct device_node *np, int index)
+{
+ struct resource res;
+
+ if (of_address_to_resource(np, index, &res))
+ return NULL;
+
+ return ioremap(res.start, 1 + res.end - res.start);
+}
+EXPORT_SYMBOL(of_iomap);
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index afe3382..060612e 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -24,4 +24,13 @@ static inline void of_device_free(struct of_device *dev)
of_release_dev(&dev->dev);
}
+extern struct of_device *of_device_alloc(struct device_node *np,
+ const char *bus_id,
+ struct device *parent);
+
+extern ssize_t of_device_get_modalias(struct of_device *ofdev,
+ char *str, ssize_t len);
+extern int of_device_uevent(struct device *dev,
+ struct kobj_uevent_env *env);
+
#endif /* _LINUX_OF_DEVICE_H */
diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h
index a8efcfe..cbcc569 100644
--- a/include/linux/of_platform.h
+++ b/include/linux/of_platform.h
@@ -58,4 +58,29 @@ extern struct of_device *of_find_device_by_node(struct device_node *np);
extern int of_bus_type_init(struct bus_type *bus, const char *name);
+/* Platform drivers register/unregister */
+static inline int of_register_platform_driver(struct of_platform_driver *drv)
+{
+ return of_register_driver(drv, &of_platform_bus_type);
+}
+static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
+{
+ of_unregister_driver(drv);
+}
+
+/* Platform devices and busses creation */
+extern struct of_device *of_platform_device_create(struct device_node *np,
+ const char *bus_id,
+ struct device *parent);
+/* pseudo "matches" value to not do deep probe */
+#define OF_NO_DEEP_PROBE ((struct of_device_id *)-1)
+
+extern int of_platform_bus_probe(struct device_node *root,
+ const struct of_device_id *matches,
+ struct device *parent);
+
+extern struct of_device *of_find_device_by_phandle(phandle ph);
+
+extern void of_instantiate_rtc(void);
+
#endif /* _LINUX_OF_PLATFORM_H */
--
1.5.4.GIT
From: Michal Simek <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
arch/microblaze/kernel/prom.c | 1163 ++++++++++++++++++++++++++++++++++
include/asm-microblaze/of_device.h | 35 +
include/asm-microblaze/of_platform.h | 40 ++
include/asm-microblaze/prom.h | 309 +++++++++
4 files changed, 1547 insertions(+), 0 deletions(-)
create mode 100644 arch/microblaze/kernel/prom.c
create mode 100644 include/asm-microblaze/of_device.h
create mode 100644 include/asm-microblaze/of_platform.h
create mode 100644 include/asm-microblaze/prom.h
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
new file mode 100644
index 0000000..b753d22
--- /dev/null
+++ b/arch/microblaze/kernel/prom.c
@@ -0,0 +1,1163 @@
+/*
+ * Procedures for creating, accessing and interpreting the device tree.
+ *
+ * Paul Mackerras August 1996.
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
+ * {engebret|bergner}@us.ibm.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#undef DEBUG
+
+#include <stdarg.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/threads.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/stringify.h>
+#include <linux/delay.h>
+#include <linux/initrd.h>
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/kexec.h>
+#include <linux/debugfs.h>
+#include <linux/irq.h>
+#include <linux/lmb.h>
+
+#include <asm/prom.h>
+#include <asm/page.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/mmu.h>
+#include <asm/pgtable.h>
+#include <asm/pci.h>
+#include <asm/sections.h>
+#include <asm/pci-bridge.h>
+
+static int __initdata dt_root_addr_cells;
+static int __initdata dt_root_size_cells;
+
+typedef u32 cell_t;
+
+struct boot_param_header *initial_boot_params;
+
+extern struct device_node *allnodes; /* temporary while merging */
+
+extern rwlock_t devtree_lock; /* temporary while merging */
+
+/* export that to outside world */
+struct device_node *of_chosen;
+
+static inline char *find_flat_dt_string(u32 offset)
+{
+ return ((char *)initial_boot_params) +
+ initial_boot_params->off_dt_strings + offset;
+}
+
+/**
+ * This function is used to scan the flattened device-tree, it is
+ * used to extract the memory informations at boot before we can
+ * unflatten the tree
+ */
+int __init of_scan_flat_dt(int (*it)(unsigned long node,
+ const char *uname, int depth,
+ void *data),
+ void *data)
+{
+ unsigned long p = ((unsigned long)initial_boot_params) +
+ initial_boot_params->off_dt_struct;
+ int rc = 0;
+ int depth = -1;
+
+ do {
+ u32 tag = *((u32 *)p);
+ char *pathp;
+
+ p += 4;
+ if (tag == OF_DT_END_NODE) {
+ depth--;
+ continue;
+ }
+ if (tag == OF_DT_NOP)
+ continue;
+ if (tag == OF_DT_END)
+ break;
+ if (tag == OF_DT_PROP) {
+ u32 sz = *((u32 *)p);
+ p += 8;
+ if (initial_boot_params->version < 0x10)
+ p = _ALIGN(p, sz >= 8 ? 8 : 4);
+ p += sz;
+ p = _ALIGN(p, 4);
+ continue;
+ }
+ if (tag != OF_DT_BEGIN_NODE) {
+ printk(KERN_WARNING "Invalid tag %x scanning flattened"
+ " device tree !\n", tag);
+ return -EINVAL;
+ }
+ depth++;
+ pathp = (char *)p;
+ p = _ALIGN(p + strlen(pathp) + 1, 4);
+ if ((*pathp) == '/') {
+ char *lp, *np;
+ for (lp = NULL, np = pathp; *np; np++)
+ if ((*np) == '/')
+ lp = np+1;
+ if (lp != NULL)
+ pathp = lp;
+ }
+ rc = it(p, pathp, depth, data);
+ if (rc != 0)
+ break;
+ } while (1);
+
+ return rc;
+}
+
+unsigned long __init of_get_flat_dt_root(void)
+{
+ unsigned long p = ((unsigned long)initial_boot_params) +
+ initial_boot_params->off_dt_struct;
+
+ while (*((u32 *)p) == OF_DT_NOP)
+ p += 4;
+ BUG_ON(*((u32 *)p) != OF_DT_BEGIN_NODE);
+ p += 4;
+ return _ALIGN(p + strlen((char *)p) + 1, 4);
+}
+
+/**
+ * This function can be used within scan_flattened_dt callback to get
+ * access to properties
+ */
+void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
+ unsigned long *size)
+{
+ unsigned long p = node;
+
+ do {
+ u32 tag = *((u32 *)p);
+ u32 sz, noff;
+ const char *nstr;
+
+ p += 4;
+ if (tag == OF_DT_NOP)
+ continue;
+ if (tag != OF_DT_PROP)
+ return NULL;
+
+ sz = *((u32 *)p);
+ noff = *((u32 *)(p + 4));
+ p += 8;
+ if (initial_boot_params->version < 0x10)
+ p = _ALIGN(p, sz >= 8 ? 8 : 4);
+
+ nstr = find_flat_dt_string(noff);
+ if (nstr == NULL) {
+ printk(KERN_WARNING "Can't find property index"
+ " name !\n");
+ return NULL;
+ }
+ if (strcmp(name, nstr) == 0) {
+ if (size)
+ *size = sz;
+ return (void *)p;
+ }
+ p += sz;
+ p = _ALIGN(p, 4);
+ } while (1);
+}
+
+int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
+{
+ const char *cp;
+ unsigned long cplen, l;
+
+ cp = of_get_flat_dt_prop(node, "compatible", &cplen);
+ if (cp == NULL)
+ return 0;
+ while (cplen > 0) {
+ if (strncasecmp(cp, compat, strlen(compat)) == 0)
+ return 1;
+ l = strlen(cp) + 1;
+ cp += l;
+ cplen -= l;
+ }
+
+ return 0;
+}
+
+static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long size,
+ unsigned long align)
+{
+ void *res;
+
+ *mem = _ALIGN(*mem, align);
+ res = (void *)*mem;
+ *mem += size;
+
+ return res;
+}
+
+static unsigned long __init unflatten_dt_node(unsigned long mem,
+ unsigned long *p,
+ struct device_node *dad,
+ struct device_node ***allnextpp,
+ unsigned long fpsize)
+{
+ struct device_node *np;
+ struct property *pp, **prev_pp = NULL;
+ char *pathp;
+ u32 tag;
+ unsigned int l, allocl;
+ int has_name = 0;
+ int new_format = 0;
+
+ tag = *((u32 *)(*p));
+ if (tag != OF_DT_BEGIN_NODE) {
+ printk("Weird tag at start of node: %x\n", tag);
+ return mem;
+ }
+ *p += 4;
+ pathp = (char *)*p;
+ l = allocl = strlen(pathp) + 1;
+ *p = _ALIGN(*p + l, 4);
+
+ /* version 0x10 has a more compact unit name here instead of the full
+ * path. we accumulate the full path size using "fpsize", we'll rebuild
+ * it later. We detect this because the first character of the name is
+ * not '/'.
+ */
+ if ((*pathp) != '/') {
+ new_format = 1;
+ if (fpsize == 0) {
+ /* root node: special case. fpsize accounts for path
+ * plus terminating zero. root node only has '/', so
+ * fpsize should be 2, but we want to avoid the first
+ * level nodes to have two '/' so we use fpsize 1 here
+ */
+ fpsize = 1;
+ allocl = 2;
+ } else {
+ /* account for '/' and path size minus terminal 0
+ * already in 'l'
+ */
+ fpsize += l;
+ allocl = fpsize;
+ }
+ }
+
+ np = unflatten_dt_alloc(&mem, sizeof(struct device_node) + allocl,
+ __alignof__(struct device_node));
+ if (allnextpp) {
+ memset(np, 0, sizeof(*np));
+ np->full_name = ((char *)np) + sizeof(struct device_node);
+ if (new_format) {
+ char *p = np->full_name;
+ /* rebuild full path for new format */
+ if (dad && dad->parent) {
+ strcpy(p, dad->full_name);
+#ifdef DEBUG
+ if ((strlen(p) + l + 1) != allocl) {
+ pr_debug("%s: p: %d, l: %d, a: %d\n",
+ pathp, (int)strlen(p),
+ l, allocl);
+ }
+#endif
+ p += strlen(p);
+ }
+ *(p++) = '/';
+ memcpy(p, pathp, l);
+ } else
+ memcpy(np->full_name, pathp, l);
+ prev_pp = &np->properties;
+ **allnextpp = np;
+ *allnextpp = &np->allnext;
+ if (dad != NULL) {
+ np->parent = dad;
+ /* we temporarily use the next field as `last_child'*/
+ if (dad->next == 0)
+ dad->child = np;
+ else
+ dad->next->sibling = np;
+ dad->next = np;
+ }
+ kref_init(&np->kref);
+ }
+ while (1) {
+ u32 sz, noff;
+ char *pname;
+
+ tag = *((u32 *)(*p));
+ if (tag == OF_DT_NOP) {
+ *p += 4;
+ continue;
+ }
+ if (tag != OF_DT_PROP)
+ break;
+ *p += 4;
+ sz = *((u32 *)(*p));
+ noff = *((u32 *)((*p) + 4));
+ *p += 8;
+ if (initial_boot_params->version < 0x10)
+ *p = _ALIGN(*p, sz >= 8 ? 8 : 4);
+
+ pname = find_flat_dt_string(noff);
+ if (pname == NULL) {
+ printk(KERN_INFO
+ "Can't find property name in list !\n");
+ break;
+ }
+ if (strcmp(pname, "name") == 0)
+ has_name = 1;
+ l = strlen(pname) + 1;
+ pp = unflatten_dt_alloc(&mem, sizeof(struct property),
+ __alignof__(struct property));
+ if (allnextpp) {
+ if (strcmp(pname, "linux,phandle") == 0) {
+ np->node = *((u32 *)*p);
+ if (np->linux_phandle == 0)
+ np->linux_phandle = np->node;
+ }
+ if (strcmp(pname, "ibm,phandle") == 0)
+ np->linux_phandle = *((u32 *)*p);
+ pp->name = pname;
+ pp->length = sz;
+ pp->value = (void *)*p;
+ *prev_pp = pp;
+ prev_pp = &pp->next;
+ }
+ *p = _ALIGN((*p) + sz, 4);
+ }
+ /* with version 0x10 we may not have the name property, recreate
+ * it here from the unit name if absent
+ */
+ if (!has_name) {
+ char *p = pathp, *ps = pathp, *pa = NULL;
+ int sz;
+
+ while (*p) {
+ if ((*p) == '@')
+ pa = p;
+ if ((*p) == '/')
+ ps = p + 1;
+ p++;
+ }
+ if (pa < ps)
+ pa = p;
+ sz = (pa - ps) + 1;
+ pp = unflatten_dt_alloc(&mem, sizeof(struct property) + sz,
+ __alignof__(struct property));
+ if (allnextpp) {
+ pp->name = "name";
+ pp->length = sz;
+ pp->value = pp + 1;
+ *prev_pp = pp;
+ prev_pp = &pp->next;
+ memcpy(pp->value, ps, sz - 1);
+ ((char *)pp->value)[sz - 1] = 0;
+ pr_debug("fixed up name for %s -> %s\n", pathp,
+ (char *)pp->value);
+ }
+ }
+ if (allnextpp) {
+ *prev_pp = NULL;
+ np->name = of_get_property(np, "name", NULL);
+ np->type = of_get_property(np, "device_type", NULL);
+
+ if (!np->name)
+ np->name = "<NULL>";
+ if (!np->type)
+ np->type = "<NULL>";
+ }
+ while (tag == OF_DT_BEGIN_NODE) {
+ mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
+ tag = *((u32 *)(*p));
+ }
+ if (tag != OF_DT_END_NODE) {
+ printk(KERN_INFO "Weird tag at end of node: %x\n", tag);
+ return mem;
+ }
+ *p += 4;
+ return mem;
+}
+
+/**
+ * unflattens the device-tree passed by the firmware, creating the
+ * tree of struct device_node. It also fills the "name" and "type"
+ * pointers of the nodes so the normal device-tree walking functions
+ * can be used (this used to be done by finish_device_tree)
+ */
+void __init unflatten_device_tree(void)
+{
+ unsigned long start, mem, size;
+ struct device_node **allnextp = &allnodes;
+
+ pr_debug(" -> unflatten_device_tree()\n");
+
+ /* First pass, scan for size */
+ start = ((unsigned long)initial_boot_params) +
+ initial_boot_params->off_dt_struct;
+ size = unflatten_dt_node(0, &start, NULL, NULL, 0);
+ size = (size | 3) + 1;
+
+ pr_debug(" size is %lx, allocating...\n", size);
+
+ /* Allocate memory for the expanded device tree */
+ mem = lmb_alloc(size + 4, __alignof__(struct device_node));
+ mem = (unsigned long) __va(mem);
+
+ ((u32 *)mem)[size / 4] = 0xdeadbeef;
+
+ pr_debug(" unflattening %lx...\n", mem);
+
+ /* Second pass, do actual unflattening */
+ start = ((unsigned long)initial_boot_params) +
+ initial_boot_params->off_dt_struct;
+ unflatten_dt_node(mem, &start, NULL, &allnextp, 0);
+ if (*((u32 *)start) != OF_DT_END)
+ printk(KERN_WARNING "Weird tag at end of tree: %08x\n",
+ *((u32 *)start));
+ if (((u32 *)mem)[size / 4] != 0xdeadbeef)
+ printk(KERN_WARNING "End of tree marker overwritten: %08x\n",
+ ((u32 *)mem)[size / 4]);
+ *allnextp = NULL;
+
+ /* Get pointer to OF "/chosen" node for use everywhere */
+ of_chosen = of_find_node_by_path("/chosen");
+ if (of_chosen == NULL)
+ of_chosen = of_find_node_by_path("/chosen@0");
+
+ pr_debug(" <- unflatten_device_tree()\n");
+}
+
+#define early_init_dt_scan_drconf_memory(node) 0
+
+static int __init early_init_dt_scan_cpus(unsigned long node,
+ const char *uname, int depth,
+ void *data)
+{
+ static int logical_cpuid;
+ char *type = of_get_flat_dt_prop(node, "device_type", NULL);
+ const u32 *intserv;
+ int i, nthreads;
+ int found = 0;
+
+ /* We are scanning "cpu" nodes only */
+ if (type == NULL || strcmp(type, "cpu") != 0)
+ return 0;
+
+ /* Get physical cpuid */
+ intserv = of_get_flat_dt_prop(node, "reg", NULL);
+ nthreads = 1;
+
+ /*
+ * Now see if any of these threads match our boot cpu.
+ * NOTE: This must match the parsing done in smp_setup_cpu_maps.
+ */
+ for (i = 0; i < nthreads; i++) {
+ /*
+ * version 2 of the kexec param format adds the phys cpuid of
+ * booted proc.
+ */
+ if (initial_boot_params && initial_boot_params->version >= 2) {
+ if (intserv[i] ==
+ initial_boot_params->boot_cpuid_phys) {
+ found = 1;
+ break;
+ }
+ } else {
+ /*
+ * Check if it's the boot-cpu, set it's hw index now,
+ * unfortunately this format did not support booting
+ * off secondary threads.
+ */
+ if (of_get_flat_dt_prop(node,
+ "linux,boot-cpu", NULL) != NULL) {
+ found = 1;
+ break;
+ }
+ }
+
+#ifdef CONFIG_SMP
+ /* logical cpu id is always 0 on UP kernels */
+ logical_cpuid++;
+#endif
+ }
+
+ if (found) {
+ pr_debug("boot cpu: logical %d physical %d\n", logical_cpuid,
+ intserv[i]);
+ boot_cpuid = logical_cpuid;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+static void __init early_init_dt_check_for_initrd(unsigned long node)
+{
+ unsigned long l;
+ u32 *prop;
+
+ pr_debug("Looking for initrd properties... ");
+
+ prop = of_get_flat_dt_prop(node, "linux,initrd-start", &l);
+ if (prop) {
+ initrd_start = (unsigned long)__va(of_read_ulong(prop, l/4));
+
+ prop = of_get_flat_dt_prop(node, "linux,initrd-end", &l);
+ if (prop) {
+ initrd_end = (unsigned long)
+ __va(of_read_ulong(prop, l/4));
+ initrd_below_start_ok = 1;
+ } else {
+ initrd_start = 0;
+ }
+ }
+
+ pr_debug("initrd_start=0x%lx initrd_end=0x%lx\n",
+ initrd_start, initrd_end);
+}
+#else
+static inline void early_init_dt_check_for_initrd(unsigned long node)
+{
+}
+#endif /* CONFIG_BLK_DEV_INITRD */
+
+static int __init early_init_dt_scan_chosen(unsigned long node,
+ const char *uname, int depth, void *data)
+{
+ unsigned long l;
+ char *p;
+
+ pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
+
+ if (depth != 1 ||
+ (strcmp(uname, "chosen") != 0 &&
+ strcmp(uname, "chosen@0") != 0))
+ return 0;
+
+#ifdef CONFIG_KEXEC
+ lprop = (u64 *)of_get_flat_dt_prop(node,
+ "linux,crashkernel-base", NULL);
+ if (lprop)
+ crashk_res.start = *lprop;
+
+ lprop = (u64 *)of_get_flat_dt_prop(node,
+ "linux,crashkernel-size", NULL);
+ if (lprop)
+ crashk_res.end = crashk_res.start + *lprop - 1;
+#endif
+
+ early_init_dt_check_for_initrd(node);
+
+ /* Retreive command line */
+ p = of_get_flat_dt_prop(node, "bootargs", &l);
+ if (p != NULL && l > 0)
+ strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
+
+#ifdef CONFIG_CMDLINE
+ if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
+ strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#endif /* CONFIG_CMDLINE */
+
+ pr_debug("Command line is: %s\n", cmd_line);
+
+ /* break now */
+ return 1;
+}
+
+static int __init early_init_dt_scan_root(unsigned long node,
+ const char *uname, int depth, void *data)
+{
+ u32 *prop;
+
+ if (depth != 0)
+ return 0;
+
+ prop = of_get_flat_dt_prop(node, "#size-cells", NULL);
+ dt_root_size_cells = (prop == NULL) ? 1 : *prop;
+ pr_debug("dt_root_size_cells = %x\n", dt_root_size_cells);
+
+ prop = of_get_flat_dt_prop(node, "#address-cells", NULL);
+ dt_root_addr_cells = (prop == NULL) ? 2 : *prop;
+ pr_debug("dt_root_addr_cells = %x\n", dt_root_addr_cells);
+
+ /* break now */
+ return 1;
+}
+
+static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
+{
+ cell_t *p = *cellp;
+
+ *cellp = p + s;
+ return of_read_number(p, s);
+}
+
+static int __init early_init_dt_scan_memory(unsigned long node,
+ const char *uname, int depth, void *data)
+{
+ char *type = of_get_flat_dt_prop(node, "device_type", NULL);
+ cell_t *reg, *endp;
+ unsigned long l;
+
+ /* Look for the ibm,dynamic-reconfiguration-memory node */
+/* if (depth == 1 &&
+ strcmp(uname, "ibm,dynamic-reconfiguration-memory") == 0)
+ return early_init_dt_scan_drconf_memory(node);
+*/
+ /* We are scanning "memory" nodes only */
+ if (type == NULL) {
+ /*
+ * The longtrail doesn't have a device_type on the
+ * /memory node, so look for the node called /memory@0.
+ */
+ if (depth != 1 || strcmp(uname, "memory@0") != 0)
+ return 0;
+ } else if (strcmp(type, "memory") != 0)
+ return 0;
+
+ reg = (cell_t *)of_get_flat_dt_prop(node, "linux,usable-memory", &l);
+ if (reg == NULL)
+ reg = (cell_t *)of_get_flat_dt_prop(node, "reg", &l);
+ if (reg == NULL)
+ return 0;
+
+ endp = reg + (l / sizeof(cell_t));
+
+ pr_debug("memory scan node %s, reg size %ld, data: %x %x %x %x,\n",
+ uname, l, reg[0], reg[1], reg[2], reg[3]);
+
+ while ((endp - reg) >= (dt_root_addr_cells + dt_root_size_cells)) {
+ u64 base, size;
+
+ base = dt_mem_next_cell(dt_root_addr_cells, ®);
+ size = dt_mem_next_cell(dt_root_size_cells, ®);
+
+ if (size == 0)
+ continue;
+ pr_debug(" - %llx , %llx\n", (unsigned long long)base,
+ (unsigned long long)size);
+
+ lmb_add(base, size);
+ }
+ return 0;
+}
+
+#ifdef CONFIG_PHYP_DUMP
+/**
+ * phyp_dump_calculate_reserve_size() - reserve variable boot area 5% or arg
+ *
+ * Function to find the largest size we need to reserve
+ * during early boot process.
+ *
+ * It either looks for boot param and returns that OR
+ * returns larger of 256 or 5% rounded down to multiples of 256MB.
+ *
+ */
+static inline unsigned long phyp_dump_calculate_reserve_size(void)
+{
+ unsigned long tmp;
+
+ if (phyp_dump_info->reserve_bootvar)
+ return phyp_dump_info->reserve_bootvar;
+
+ /* divide by 20 to get 5% of value */
+ tmp = lmb_end_of_DRAM();
+ do_div(tmp, 20);
+
+ /* round it down in multiples of 256 */
+ tmp = tmp & ~0x0FFFFFFFUL;
+
+ return (tmp > PHYP_DUMP_RMR_END ? tmp : PHYP_DUMP_RMR_END);
+}
+
+/**
+ * phyp_dump_reserve_mem() - reserve all not-yet-dumped mmemory
+ *
+ * This routine may reserve memory regions in the kernel only
+ * if the system is supported and a dump was taken in last
+ * boot instance or if the hardware is supported and the
+ * scratch area needs to be setup. In other instances it returns
+ * without reserving anything. The memory in case of dump being
+ * active is freed when the dump is collected (by userland tools).
+ */
+static void __init phyp_dump_reserve_mem(void)
+{
+ unsigned long base, size;
+ unsigned long variable_reserve_size;
+
+ if (!phyp_dump_info->phyp_dump_configured) {
+ printk(KERN_ERR "Phyp-dump not supported on this hardware\n");
+ return;
+ }
+
+ if (!phyp_dump_info->phyp_dump_at_boot) {
+ printk(KERN_INFO "Phyp-dump disabled at boot time\n");
+ return;
+ }
+
+ variable_reserve_size = phyp_dump_calculate_reserve_size();
+
+ if (phyp_dump_info->phyp_dump_is_active) {
+ /* Reserve *everything* above RMR.Area freed by userland tools*/
+ base = variable_reserve_size;
+ size = lmb_end_of_DRAM() - base;
+
+ /* XXX crashed_ram_end is wrong, since it may be beyond
+ * the memory_limit, it will need to be adjusted. */
+ lmb_reserve(base, size);
+
+ phyp_dump_info->init_reserve_start = base;
+ phyp_dump_info->init_reserve_size = size;
+ } else {
+ size = phyp_dump_info->cpu_state_size +
+ phyp_dump_info->hpte_region_size +
+ variable_reserve_size;
+ base = lmb_end_of_DRAM() - size;
+ lmb_reserve(base, size);
+ phyp_dump_info->init_reserve_start = base;
+ phyp_dump_info->init_reserve_size = size;
+ }
+}
+#else
+static inline void __init phyp_dump_reserve_mem(void) {}
+#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
+
+void __init early_init_devtree(void *params)
+{
+ pr_debug(" -> early_init_devtree(%p)\n", params);
+
+ /* Setup flat device-tree pointer */
+ initial_boot_params = params;
+
+#ifdef CONFIG_PHYP_DUMP
+ /* scan tree to see if dump occured during last boot */
+ of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);
+#endif
+
+ /* Retrieve various informations from the /chosen node of the
+ * device-tree, including the platform type, initrd location and
+ * size, TCE reserve, and more ...
+ */
+ of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
+
+ /* Scan memory nodes and rebuild LMBs */
+ lmb_init();
+ of_scan_flat_dt(early_init_dt_scan_root, NULL);
+ of_scan_flat_dt(early_init_dt_scan_memory, NULL);
+
+ /* Save command line for /proc/cmdline and then parse parameters */
+ strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
+ parse_early_param();
+
+ lmb_analyze();
+
+ pr_debug("Phys. mem: %lx\n",(unsigned long) lmb_phys_mem_size());
+
+ pr_debug("Scanning CPUs ...\n");
+
+ /* Retreive CPU related informations from the flat tree
+ * (altivec support, boot CPU ID, ...)
+ */
+ of_scan_flat_dt(early_init_dt_scan_cpus, NULL);
+
+ pr_debug(" <- early_init_devtree()\n");
+}
+
+/**
+ * Indicates whether the root node has a given value in its
+ * compatible property.
+ */
+int machine_is_compatible(const char *compat)
+{
+ struct device_node *root;
+ int rc = 0;
+
+ root = of_find_node_by_path("/");
+ if (root) {
+ rc = of_device_is_compatible(root, compat);
+ of_node_put(root);
+ }
+ return rc;
+}
+EXPORT_SYMBOL(machine_is_compatible);
+
+/*******
+ *
+ * New implementation of the OF "find" APIs, return a refcounted
+ * object, call of_node_put() when done. The device tree and list
+ * are protected by a rw_lock.
+ *
+ * Note that property management will need some locking as well,
+ * this isn't dealt with yet.
+ *
+ *******/
+
+/**
+ * of_find_node_by_phandle - Find a node given a phandle
+ * @handle: phandle of the node to find
+ *
+ * Returns a node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+ */
+struct device_node *of_find_node_by_phandle(phandle handle)
+{
+ struct device_node *np;
+
+ read_lock(&devtree_lock);
+ for (np = allnodes; np != 0; np = np->allnext)
+ if (np->linux_phandle == handle)
+ break;
+ of_node_get(np);
+ read_unlock(&devtree_lock);
+ return np;
+}
+EXPORT_SYMBOL(of_find_node_by_phandle);
+
+/**
+ * of_find_all_nodes - Get next node in global list
+ * @prev: Previous node or NULL to start iteration
+ * of_node_put() will be called on it
+ *
+ * Returns a node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+ */
+struct device_node *of_find_all_nodes(struct device_node *prev)
+{
+ struct device_node *np;
+
+ read_lock(&devtree_lock);
+ np = prev ? prev->allnext : allnodes;
+ for (; np != 0; np = np->allnext)
+ if (of_node_get(np))
+ break;
+ of_node_put(prev);
+ read_unlock(&devtree_lock);
+ return np;
+}
+EXPORT_SYMBOL(of_find_all_nodes);
+
+/**
+ * of_node_get - Increment refcount of a node
+ * @node: Node to inc refcount, NULL is supported to
+ * simplify writing of callers
+ *
+ * Returns node.
+ */
+struct device_node *of_node_get(struct device_node *node)
+{
+ if (node)
+ kref_get(&node->kref);
+ return node;
+}
+EXPORT_SYMBOL(of_node_get);
+
+static inline struct device_node *kref_to_device_node(struct kref *kref)
+{
+ return container_of(kref, struct device_node, kref);
+}
+
+/**
+ * of_node_release - release a dynamically allocated node
+ * @kref: kref element of the node to be released
+ *
+ * In of_node_put() this function is passed to kref_put()
+ * as the destructor.
+ */
+static void of_node_release(struct kref *kref)
+{
+ struct device_node *node = kref_to_device_node(kref);
+ struct property *prop = node->properties;
+
+ /* We should never be releasing nodes that haven't been detached. */
+ if (!of_node_check_flag(node, OF_DETACHED)) {
+ printk(KERN_INFO "WARNING: Bad of_node_put() on %s\n",
+ node->full_name);
+ dump_stack();
+ kref_init(&node->kref);
+ return;
+ }
+
+ if (!of_node_check_flag(node, OF_DYNAMIC))
+ return;
+
+ while (prop) {
+ struct property *next = prop->next;
+ kfree(prop->name);
+ kfree(prop->value);
+ kfree(prop);
+ prop = next;
+
+ if (!prop) {
+ prop = node->deadprops;
+ node->deadprops = NULL;
+ }
+ }
+ kfree(node->full_name);
+ kfree(node->data);
+ kfree(node);
+}
+
+/**
+ * of_node_put - Decrement refcount of a node
+ * @node: Node to dec refcount, NULL is supported to
+ * simplify writing of callers
+ *
+ */
+void of_node_put(struct device_node *node)
+{
+ if (node)
+ kref_put(&node->kref, of_node_release);
+}
+EXPORT_SYMBOL(of_node_put);
+
+/*
+ * Plug a device node into the tree and global list.
+ */
+void of_attach_node(struct device_node *np)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&devtree_lock, flags);
+ np->sibling = np->parent->child;
+ np->allnext = allnodes;
+ np->parent->child = np;
+ allnodes = np;
+ write_unlock_irqrestore(&devtree_lock, flags);
+}
+
+/*
+ * "Unplug" a node from the device tree. The caller must hold
+ * a reference to the node. The memory associated with the node
+ * is not freed until its refcount goes to zero.
+ */
+void of_detach_node(struct device_node *np)
+{
+ struct device_node *parent;
+ unsigned long flags;
+
+ write_lock_irqsave(&devtree_lock, flags);
+
+ parent = np->parent;
+ if (!parent)
+ goto out_unlock;
+
+ if (allnodes == np)
+ allnodes = np->allnext;
+ else {
+ struct device_node *prev;
+ for (prev = allnodes;
+ prev->allnext != np;
+ prev = prev->allnext)
+ ;
+ prev->allnext = np->allnext;
+ }
+
+ if (parent->child == np)
+ parent->child = np->sibling;
+ else {
+ struct device_node *prevsib;
+ for (prevsib = np->parent->child;
+ prevsib->sibling != np;
+ prevsib = prevsib->sibling)
+ ;
+ prevsib->sibling = np->sibling;
+ }
+
+ of_node_set_flag(np, OF_DETACHED);
+
+out_unlock:
+ write_unlock_irqrestore(&devtree_lock, flags);
+}
+
+/*
+ * Add a property to a node
+ */
+int prom_add_property(struct device_node *np, struct property *prop)
+{
+ struct property **next;
+ unsigned long flags;
+
+ prop->next = NULL;
+ write_lock_irqsave(&devtree_lock, flags);
+ next = &np->properties;
+ while (*next) {
+ if (strcmp(prop->name, (*next)->name) == 0) {
+ /* duplicate ! don't insert it */
+ write_unlock_irqrestore(&devtree_lock, flags);
+ return -1;
+ }
+ next = &(*next)->next;
+ }
+ *next = prop;
+ write_unlock_irqrestore(&devtree_lock, flags);
+
+#ifdef CONFIG_PROC_DEVICETREE
+ /* try to add to proc as well if it was initialized */
+ if (np->pde)
+ proc_device_tree_add_prop(np->pde, prop);
+#endif /* CONFIG_PROC_DEVICETREE */
+
+ return 0;
+}
+
+/*
+ * Remove a property from a node. Note that we don't actually
+ * remove it, since we have given out who-knows-how-many pointers
+ * to the data using get-property. Instead we just move the property
+ * to the "dead properties" list, so it won't be found any more.
+ */
+int prom_remove_property(struct device_node *np, struct property *prop)
+{
+ struct property **next;
+ unsigned long flags;
+ int found = 0;
+
+ write_lock_irqsave(&devtree_lock, flags);
+ next = &np->properties;
+ while (*next) {
+ if (*next == prop) {
+ /* found the node */
+ *next = prop->next;
+ prop->next = np->deadprops;
+ np->deadprops = prop;
+ found = 1;
+ break;
+ }
+ next = &(*next)->next;
+ }
+ write_unlock_irqrestore(&devtree_lock, flags);
+
+ if (!found)
+ return -ENODEV;
+
+#ifdef CONFIG_PROC_DEVICETREE
+ /* try to remove the proc node as well */
+ if (np->pde)
+ proc_device_tree_remove_prop(np->pde, prop);
+#endif /* CONFIG_PROC_DEVICETREE */
+
+ return 0;
+}
+
+/*
+ * Update a property in a node. Note that we don't actually
+ * remove it, since we have given out who-knows-how-many pointers
+ * to the data using get-property. Instead we just move the property
+ * to the "dead properties" list, and add the new property to the
+ * property list
+ */
+int prom_update_property(struct device_node *np,
+ struct property *newprop,
+ struct property *oldprop)
+{
+ struct property **next;
+ unsigned long flags;
+ int found = 0;
+
+ write_lock_irqsave(&devtree_lock, flags);
+ next = &np->properties;
+ while (*next) {
+ if (*next == oldprop) {
+ /* found the node */
+ newprop->next = oldprop->next;
+ *next = newprop;
+ oldprop->next = np->deadprops;
+ np->deadprops = oldprop;
+ found = 1;
+ break;
+ }
+ next = &(*next)->next;
+ }
+ write_unlock_irqrestore(&devtree_lock, flags);
+
+ if (!found)
+ return -ENODEV;
+
+#ifdef CONFIG_PROC_DEVICETREE
+ /* try to add to proc as well if it was initialized */
+ if (np->pde)
+ proc_device_tree_update_prop(np->pde, newprop, oldprop);
+#endif /* CONFIG_PROC_DEVICETREE */
+
+ return 0;
+}
+
+/* Find the device node for a given logical cpu number, also returns the cpu
+ * local thread number (index in ibm,interrupt-server#s) if relevant and
+ * asked for (non NULL)
+ */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
+{
+ int hardid;
+ struct device_node *np;
+
+ hardid = boot_cpuid; /* get_hard_smp_processor_id(cpu);*/
+
+ for_each_node_by_type(np, "cpu") {
+ const u32 *intserv;
+ unsigned int plen, t;
+
+ /* Check for ibm,ppc-interrupt-server#s. If it doesn't exist
+ * fallback to "reg" property and assume no threads
+ */
+ intserv = of_get_property(np, "ibm,ppc-interrupt-server#s",
+ &plen);
+ if (intserv == NULL) {
+ const u32 *reg = of_get_property(np, "reg", NULL);
+ if (reg == NULL)
+ continue;
+ if (*reg == hardid) {
+ if (thread)
+ *thread = 0;
+ return np;
+ }
+ } else {
+ plen /= sizeof(u32);
+ for (t = 0; t < plen; t++) {
+ if (hardid == intserv[t]) {
+ if (thread)
+ *thread = t;
+ return np;
+ }
+ }
+ }
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(of_get_cpu_node);
+
+#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
+static struct debugfs_blob_wrapper flat_dt_blob;
+
+static int __init export_flat_device_tree(void)
+{
+ struct dentry *d;
+
+ flat_dt_blob.data = initial_boot_params;
+ flat_dt_blob.size = initial_boot_params->totalsize;
+
+ d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
+ of_debugfs_root, &flat_dt_blob);
+ if (!d)
+ return 1;
+
+ return 0;
+}
+__initcall(export_flat_device_tree);
+#endif
diff --git a/include/asm-microblaze/of_device.h b/include/asm-microblaze/of_device.h
new file mode 100644
index 0000000..09a36ed
--- /dev/null
+++ b/include/asm-microblaze/of_device.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2007-2008 Michal Simek <[email protected]>
+ *
+ * based on PowerPC of_device.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_OF_DEVICE_H
+#define _ASM_MICROBLAZE_OF_DEVICE_H
+#ifdef __KERNEL__
+
+#include <linux/device.h>
+#include <linux/of.h>
+
+/*
+ * The of_device is a kind of "base class" that is a superset of
+ * struct device for use by devices attached to an OF node and
+ * probed using OF properties.
+ */
+struct of_device {
+ struct device_node *node; /* to be obsoleted */
+ u64 dma_mask; /* DMA mask */
+ struct device dev; /* Generic device interface */
+};
+
+extern void of_device_make_bus_id(struct of_device *dev);
+
+/* This is just here during the transition */
+#include <linux/of_device.h>
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_MICROBLAZE_OF_DEVICE_H */
diff --git a/include/asm-microblaze/of_platform.h b/include/asm-microblaze/of_platform.h
new file mode 100644
index 0000000..41cced4
--- /dev/null
+++ b/include/asm-microblaze/of_platform.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
+ * <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_MICROBLAZE_OF_PLATFORM_H
+#define _ASM_MICROBLAZE_OF_PLATFORM_H
+
+/* This is just here during the transition */
+#include <linux/of_platform.h>
+
+/*
+ * The list of OF IDs below is used for matching bus types in the
+ * system whose devices are to be exposed as of_platform_devices.
+ *
+ * This is the default list valid for most platforms. This file provides
+ * functions who can take an explicit list if necessary though
+ *
+ * The search is always performed recursively looking for children of
+ * the provided device_node and recursively if such a children matches
+ * a bus type in the list
+ */
+
+static const struct of_device_id of_default_bus_ids[] = {
+ { .type = "soc", },
+ { .compatible = "soc", },
+ { .type = "plb5", },
+ { .type = "plb4", },
+ { .type = "opb", },
+ { .type = "simple", },
+ {},
+};
+
+
+#endif /* _ASM_MICROBLAZE_OF_PLATFORM_H */
diff --git a/include/asm-microblaze/prom.h b/include/asm-microblaze/prom.h
new file mode 100644
index 0000000..dc96331
--- /dev/null
+++ b/include/asm-microblaze/prom.h
@@ -0,0 +1,309 @@
+/*
+ * Definitions for talking to the Open Firmware PROM on
+ * Power Macintosh computers.
+ *
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_MICROBLAZE_PROM_H
+#define _ASM_MICROBLAZE_PROM_H
+#ifdef __KERNEL__
+
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/platform_device.h>
+#include <asm/irq.h>
+#include <asm/atomic.h>
+
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
+
+#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
+#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
+#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
+
+/* Definitions used by the flattened device tree */
+#define OF_DT_HEADER 0xd00dfeed /* marker */
+#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
+#define OF_DT_END_NODE 0x2 /* End node */
+#define OF_DT_PROP 0x3 /* Property: name off, size, content */
+#define OF_DT_NOP 0x4 /* nop */
+#define OF_DT_END 0x9
+
+#define OF_DT_VERSION 0x10
+
+/*
+ * This is what gets passed to the kernel by prom_init or kexec
+ *
+ * The dt struct contains the device tree structure, full pathes and
+ * property contents. The dt strings contain a separate block with just
+ * the strings for the property names, and is fully page aligned and
+ * self contained in a page, so that it can be kept around by the kernel,
+ * each property name appears only once in this page (cheap compression)
+ *
+ * the mem_rsvmap contains a map of reserved ranges of physical memory,
+ * passing it here instead of in the device-tree itself greatly simplifies
+ * the job of everybody. It's just a list of u64 pairs (base/size) that
+ * ends when size is 0
+ */
+struct boot_param_header {
+ u32 magic; /* magic word OF_DT_HEADER */
+ u32 totalsize; /* total size of DT block */
+ u32 off_dt_struct; /* offset to structure */
+ u32 off_dt_strings; /* offset to strings */
+ u32 off_mem_rsvmap; /* offset to memory reserve map */
+ u32 version; /* format version */
+ u32 last_comp_version; /* last compatible version */
+ /* version 2 fields below */
+ u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
+ /* version 3 fields below */
+ u32 dt_strings_size; /* size of the DT strings block */
+ /* version 17 fields below */
+ u32 dt_struct_size; /* size of the DT structure block */
+};
+
+typedef u32 phandle;
+typedef u32 ihandle;
+
+struct property {
+ char *name;
+ int length;
+ void *value;
+ struct property *next;
+};
+
+struct device_node {
+ const char *name;
+ const char *type;
+ phandle node;
+ phandle linux_phandle;
+ char *full_name;
+
+ struct property *properties;
+ struct property *deadprops; /* removed properties */
+ struct device_node *parent;
+ struct device_node *child;
+ struct device_node *sibling;
+ struct device_node *next; /* next device of same type */
+ struct device_node *allnext; /* next in list of all nodes */
+ struct proc_dir_entry *pde; /* this node's proc directory */
+ struct kref kref;
+ unsigned long _flags;
+ void *data;
+};
+
+extern struct device_node *of_chosen;
+
+static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
+{
+ return test_bit(flag, &n->_flags);
+}
+
+static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
+{
+ set_bit(flag, &n->_flags);
+}
+
+#define HAVE_ARCH_DEVTREE_FIXUPS
+
+static inline void set_node_proc_entry(struct device_node *dn,
+ struct proc_dir_entry *de)
+{
+ dn->pde = de;
+}
+
+extern struct device_node *of_find_all_nodes(struct device_node *prev);
+extern struct device_node *of_node_get(struct device_node *node);
+extern void of_node_put(struct device_node *node);
+
+/* For scanning the flat device-tree at boot time */
+extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
+ const char *uname, int depth,
+ void *data),
+ void *data);
+extern void *__init of_get_flat_dt_prop(unsigned long node, const char *name,
+ unsigned long *size);
+extern int __init
+ of_flat_dt_is_compatible(unsigned long node, const char *name);
+extern unsigned long __init of_get_flat_dt_root(void);
+
+/* For updating the device tree at runtime */
+extern void of_attach_node(struct device_node *);
+extern void of_detach_node(struct device_node *);
+
+/* Other Prototypes */
+extern void finish_device_tree(void);
+extern void unflatten_device_tree(void);
+extern void early_init_devtree(void *);
+extern int machine_is_compatible(const char *compat);
+extern void print_properties(struct device_node *node);
+extern int prom_n_intr_cells(struct device_node *np);
+extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
+extern int prom_add_property(struct device_node *np, struct property *prop);
+extern int prom_remove_property(struct device_node *np, struct property *prop);
+extern int prom_update_property(struct device_node *np,
+ struct property *newprop,
+ struct property *oldprop);
+
+extern struct resource *request_OF_resource(struct device_node *node,
+ int index, const char *name_postfix);
+extern int release_OF_resource(struct device_node *node, int index);
+
+/*
+ * OF address retreival & translation
+ */
+
+/* Helper to read a big number; size is in cells (not bytes) */
+static inline u64 of_read_number(const u32 *cell, int size)
+{
+ u64 r = 0;
+ while (size--)
+ r = (r << 32) | *(cell++);
+ return r;
+}
+
+/* Like of_read_number, but we want an unsigned long result */
+#define of_read_ulong(cell, size) of_read_number(cell, size)
+
+/* Translate an OF address block into a CPU physical address
+ */
+extern u64 of_translate_address(struct device_node *np, const u32 *addr);
+
+/* Extract an address from a device, returns the region size and
+ * the address space flags too. The PCI version uses a BAR number
+ * instead of an absolute index
+ */
+extern const u32 *of_get_address(struct device_node *dev, int index,
+ u64 *size, unsigned int *flags);
+extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no,
+ u64 *size, unsigned int *flags);
+
+/* Get an address as a resource. Note that if your address is
+ * a PIO address, the conversion will fail if the physical address
+ * can't be internally converted to an IO token with
+ * pci_address_to_pio(), that is because it's either called to early
+ * or it can't be matched to any host bridge IO space
+ */
+extern int of_address_to_resource(struct device_node *dev, int index,
+ struct resource *r);
+extern int of_pci_address_to_resource(struct device_node *dev, int bar,
+ struct resource *r);
+
+/* Parse the ibm,dma-window property of an OF node into the busno, phys and
+ * size parameters.
+ */
+void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
+ unsigned long *busno, unsigned long *phys, unsigned long *size);
+
+extern void kdump_move_device_tree(void);
+
+/* CPU OF node matching */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
+
+/* Get the MAC address */
+extern const void *of_get_mac_address(struct device_node *np);
+
+/*
+ * OF interrupt mapping
+ */
+
+/* This structure is returned when an interrupt is mapped. The controller
+ * field needs to be put() after use
+ */
+
+#define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */
+
+struct of_irq {
+ struct device_node *controller; /* Interrupt controller node */
+ u32 size; /* Specifier size */
+ u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
+};
+
+/**
+ * of_irq_map_init - Initialize the irq remapper
+ * @flags: flags defining workarounds to enable
+ *
+ * Some machines have bugs in the device-tree which require certain workarounds
+ * to be applied. Call this before any interrupt mapping attempts to enable
+ * those workarounds.
+ */
+#define OF_IMAP_OLDWORLD_MAC 0x00000001
+#define OF_IMAP_NO_PHANDLE 0x00000002
+
+extern void of_irq_map_init(unsigned int flags);
+
+/**
+ * of_irq_map_raw - Low level interrupt tree parsing
+ * @parent: the device interrupt parent
+ * @intspec: interrupt specifier ("interrupts" property of the device)
+ * @ointsize: size of the passed in interrupt specifier
+ * @addr: address specifier (start of "reg" property of the device)
+ * @out_irq: structure of_irq filled by this function
+ *
+ * Returns 0 on success and a negative number on error
+ *
+ * This function is a low-level interrupt tree walking function. It
+ * can be used to do a partial walk with synthetized reg and interrupts
+ * properties, for example when resolving PCI interrupts when no device
+ * node exist for the parent.
+ *
+ */
+
+extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
+ u32 ointsize, const u32 *addr,
+ struct of_irq *out_irq);
+
+/**
+ * of_irq_map_one - Resolve an interrupt for a device
+ * @device: the device whose interrupt is to be resolved
+ * @index: index of the interrupt to resolve
+ * @out_irq: structure of_irq filled by this function
+ *
+ * This function resolves an interrupt, walking the tree, for a given
+ * device-tree node. It's the high level pendant to of_irq_map_raw().
+ * It also implements the workarounds for OldWolrd Macs.
+ */
+extern int of_irq_map_one(struct device_node *device, int index,
+ struct of_irq *out_irq);
+
+/**
+ * of_irq_map_pci - Resolve the interrupt for a PCI device
+ * @pdev: the device whose interrupt is to be resolved
+ * @out_irq: structure of_irq filled by this function
+ *
+ * This function resolves the PCI interrupt for a given PCI device. If a
+ * device-node exists for a given pci_dev, it will use normal OF tree
+ * walking. If not, it will implement standard swizzling and walk up the
+ * PCI tree until an device-node is found, at which point it will finish
+ * resolving using the OF tree walking.
+ */
+struct pci_dev;
+extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
+
+extern int of_irq_to_resource(struct device_node *dev, int index,
+ struct resource *r);
+
+/**
+ * of_iomap - Maps the memory mapped IO for a given device_node
+ * @device: the device whose io range will be mapped
+ * @index: index of the io range
+ *
+ * Returns a pointer to the mapped memory
+ */
+extern void __iomem *of_iomap(struct device_node *device, int index);
+
+/*
+ * NB: This is here while we transition from using asm/prom.h
+ * to linux/of.h
+ */
+#include <linux/of.h>
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_MICROBLAZE_PROM_H */
--
1.5.4.GIT
>>>>> "monstr" == monstr <[email protected]> writes:
monstr> From: Michal Simek <[email protected]>
monstr> Signed-off-by: Michal Simek <[email protected]>
Acked-by: Peter Korsgaard <[email protected]>
monstr> config SERIAL_UARTLITE
monstr> tristate "Xilinx uartlite serial port support"
monstr> - depends on PPC32
monstr> + depends on PPC32 || MICROBLAZE
monstr> select SERIAL_CORE
monstr> help
--
Bye, Peter Korsgaard
On Thu, Jun 26, 2008 at 02:29:31PM +0200, [email protected] wrote:
>...
> --- /dev/null
> +++ b/arch/microblaze/Makefile
>...
> +# Work out HW multipler support. This is icky.
> +# 1. Spartan2 has no HW multiplers.
> +# 2. MicroBlaze v3.x always uses them, except in Spartan 2
> +# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
> +ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
> + ifeq ($(CPU_MAJOR),3)
> + CPUFLAGS-1 += -mno-xl-soft-mul
> + else
> + # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
> + CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
> + CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
> + endif
> +endif
> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
> +
> +CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
> +
> +# The various CONFIG_XILINX cpu features options are integers 0/1/2...
> +# rather than bools y/n
> +CFLAGS += $(CPUFLAGS-1)
> +CFLAGS += $(CPUFLAGS-2)
>...
Why are the options not bools?
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thu, Jun 26, 2008 at 02:29:36PM +0200, [email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> include/asm-microblaze/semaphore.h | 1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
> create mode 100644 include/asm-microblaze/semaphore.h
>
> diff --git a/include/asm-microblaze/semaphore.h b/include/asm-microblaze/semaphore.h
> new file mode 100644
> index 0000000..d9b2034
> --- /dev/null
> +++ b/include/asm-microblaze/semaphore.h
> @@ -0,0 +1 @@
> +#include <linux/semaphore.h>
In -next all asm/semaphore.h headers gained a
#warning Use linux/semaphore.h, not asm/semaphore.h
and the number of asm/semaphore.h is approaching zero.
You can simply drop this patch.
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thu, Jun 26, 2008 at 02:29:59PM +0200, [email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> 0 files changed, 0 insertions(+), 0 deletions(-)
> create mode 100644 include/asm-microblaze/a.out.h
>
> diff --git a/include/asm-microblaze/a.out.h b/include/asm-microblaze/a.out.h
> new file mode 100644
> index 0000000..e69de29
As of 2.6.26-rc7 you do no longer need this header.
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thu, Jun 26, 2008 at 02:29:29PM +0200, [email protected] wrote:
> Hi everybody,
>
> current linux version is 2.6.26-rc8 and I think this is the right time
> to send latest patches againts rc8 for Microblaze CPU.
>...
Thanks for your work on getting the architecture included.
I have two questions:
Where can I find a toolchain for compiling a Microblaze kernel?
What is the status of Microblaze support in upstream binutils and gcc?
> Best regards,
> Michal Simek
TIA
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
[email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> arch/microblaze/platform/generic/system.dts | 300 +++++++++++++++++++++++++++
> 1 files changed, 300 insertions(+), 0 deletions(-)
> create mode 100644 arch/microblaze/platform/generic/system.dts
>
> diff --git a/arch/microblaze/platform/generic/system.dts b/arch/microblaze/platform/generic/system.dts
> new file mode 100644
> index 0000000..724a037
> --- /dev/null
> +++ b/arch/microblaze/platform/generic/system.dts
> @@ -0,0 +1,300 @@
> +/*
> + * (C) Copyright 2007-2008 Xilinx, Inc.
> + * (C) Copyright 2007-2008 Michal Simek
> + *
> + * Michal SIMEK <[email protected]>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + *
> + * CAUTION: This file is automatically generated by libgen.
> + * Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
> + * Generate by FDT v1.00.a
> + */
> +
> +/ {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "xlnx,microblaze";
> + model = "testing";
> + DDR_SDRAM_32Mx16: memory@20000000 {
> + device_type = "memory";
> + reg = < 20000000 2000000 >;
> + } ;
> + chosen {
> + bootargs = "console=ttyUL0,115200 loglevel=15";
> + linux,stdout-path = "/plb@0/serial@40100000";
> + } ;
> + cpus {
> + #address-cells = <1>;
> + #cpus = <1>;
> + #size-cells = <0>;
> + microblaze_0: cpu@0 {
> + clock-frequency = <2faf080>;
This should really be using the /dts-v1/ format now.
Thanks,
jdl
On Thursday 26 June 2008, [email protected] wrote:
> We have there still problem with syscalls and we don't have chance to
> fix it to stable version, this is not part which I can do yourself.
> Microblaze will be n + 1 platform which use some old syscalls.
> I hope you understand.
That still leaves the problem that a lot of your syscalls have bugs
copied from other platforms. If you need to maintain backwards compatibility
with your existing binaries, that's fine, but please fix the code you are
adding.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:
> +#include <linux/autoconf.h>
You should never need to include linux/autoconf.h anywhere,
just remove this.
> +#include <linux/init.h>
> +#include <linux/mm.h>
> +#include "../../../mm/internal.h"
Why do you need to include the internal.h file here?
If you have a good reason to do it, you should probably
add the symbol you need to a global header file.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:
> ?include/asm-microblaze/msgbuf.h ? | ? 39 ++++++++++++++++++++++++++++
> ?include/asm-microblaze/shmbuf.h ? | ? 50 +++++++++++++++++++++++++++++++++++++
> ?include/asm-microblaze/shmparam.h | ? 14 ++++++++++
> ?3 files changed, 103 insertions(+), 0 deletions(-)
> ?create mode 100644 include/asm-microblaze/msgbuf.h
> ?create mode 100644 include/asm-microblaze/shmbuf.h
> ?create mode 100644 include/asm-microblaze/shmparam.h
>
These files are ok, but IMHO they should be in asm-generic, since there
are already many identical copies.
While the implementation of these three, as well as ipcbuf.h and sembuf.h
could be better optimized for endianess and word size differences, I have
come to the conclusion that there is no point for them to really be
different, and uClibc expects this exact layout by default anyway.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:> @@ -0,0 +1,84 @@> +> +#include <linux/string.h>> +#include <asm/termbits.h>> +#include <asm/ioctls.h>> +> +struct winsize {> +???????unsigned short ws_row;> +???????unsigned short ws_col;> +???????unsigned short ws_xpixel;> +???????unsigned short ws_ypixel;> +};> +> +#define NCC 8> +struct termio {> +???????unsigned short c_iflag; /* input mode flags */> +???????unsigned short c_oflag; /* output mode flags */> +???????unsigned short c_cflag; /* control mode flags */> +???????unsigned short c_lflag; /* local mode flags */> +???????unsigned char c_line; /* line discipline */> +???????unsigned char c_cc[NCC]; /* control characters */> +};> +> +#ifdef __KERNEL__> +/*?????intr=^C?????????quit=^|?????????erase=del???????kill=^U> +???????eof=^D??????????vtime=\0????????vmin=\1?????????sxtc=\0> +???????start=^Q????????stop=^S?????????susp=^Z?????????eol=\0> +???????reprint=^R??????discard=^U??????werase=^W???????lnext=^V> +???????eol2=\0> +*/> +#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"> +#endif> +> +/* Modem lines */> +> +#define TIOCM_LE???????0x001> +#define TIOCM_DTR??????0x002> +#define TIOCM_RTS??????0x004> +#define TIOCM_ST???????0x008> +#define TIOCM_SR???????0x010> +#define TIOCM_CTS??????0x020> +#define TIOCM_CAR??????0x040> +#define TIOCM_RNG??????0x080> +#define TIOCM_DSR??????0x100> +#define TIOCM_CD???????TIOCM_CAR> +#define TIOCM_RI???????TIOCM_RNG> +#define TIOCM_OUT1?????0x2000> +#define TIOCM_OUT2?????0x4000> +#define TIOCM_LOOP?????0x8000
It would be nice if more of the above could be in asm-generic/termios.h,as far as I can tell they are identical for all (four) users of thatgeneric file.Of course if you do that, you'll have to remove the code from the existingusers.
> +/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */> +> +/* Line disciplines */> +> +#define N_TTY??????????0> +#define N_SLIP?????????1> +#define N_MOUSE????????????????2> +#define N_PPP??????????3> +#define N_STRIP????????????????4> +#define N_AX25?????????5> +#define N_X25??????????6 /* X.25 async */> +#define N_6PACK????????????????7> +#define N_MASC?????????8 /* Reserved for Mobitex module <[email protected]> */> +#define N_R3964????????????????9 /* Reserved for Simatic R3964 module */> +#define N_PROFIBUS_FDL?10 /* Reserved for Profibus <[email protected]> */> +#define N_IRDA?????????11 /* Linux IR - http://irda.sourceforge.net/ */> +#define N_SMSBLOCK?????12 /* SMS block mode - for talking to GSM data cards> +???????????????????????????????about SMS messages */> +#define N_HDLC?????????13 /* synchronous HDLC */> +#define N_SYNC_PPP?????14> +#define N_HCI??????????15 /* Bluetooth HCI UART */> +
These are already defined in linux/tty.h, so they should not be here.
Arnd <><
????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay? ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?
On Thursday 26 June 2008, [email protected] wrote:
> +
> +#ifndef _ASM_MICROBLAZE_NAMEI_H
> +#define _ASM_MICROBLAZE_NAMEI_H
> +
> +#ifdef __KERNEL__
> +
> +/* This dummy routine maybe changed to something useful
> + * for /usr/gnemul/ emulation stuff.
> + * Look at asm-sparc/namei.h for details.
> + */
> +#define __emul_prefix() NULL
> +
> +#endif /* __KERNEL__ */
> +
> +#endif /* _ASM_MICROBLAZE_NAMEI_H */
Could you move this to asm-generic? Note that the comment is wrong,
asm-sparc doesn't actually implement it any more, only ia64, mips and
arm have an implementation that actually does something interesting
here.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:
> ?include/asm-generic/sockios.h ? ? | ? 23 +++++++++++++++++++++++
> ?include/asm-generic/ucontext.h ? ?| ? 24 ++++++++++++++++++++++++
> ?include/asm-microblaze/fcntl.h ? ?| ? ?1 +
> ?include/asm-microblaze/sockios.h ?| ? 23 +++++++++++++++++++++++
> ?include/asm-microblaze/ucontext.h | ? ?1 +
The grouping of files seems rather arbitrary here. What would be really
good here is if you had all the new asm-generic files as separate patches,
i.e. as a series adding them independent of the microblaze patches so
that the other arch maintainers could look at them and start using
the same files, and then add all your trivial wrappers in a single
patch.
Also, the sockios file here looks like it should be in asm-generic.
The contents of the files in this patch all look good, they are
identical to the majority of the other architectures.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:
> +
> +/*
> + * sys_ipc() is the de-multiplexer for the SysV IPC calls..
> + *
> + * This is really horribly ugly.
> + */
If it's so horribly ugly, don't do it this way ;-)
> +int
> +sys_ipc(uint call, int first, int second, int third, void *ptr, long fifth)
> +{
> + int version, ret;
> +
> + version = call >> 16; /* hack for backward compatibility */
> + call &= 0xffff;
Backwards compatibility with what?
> +static inline unsigned long
> +do_mmap2(unsigned long addr, size_t len,
> + unsigned long prot, unsigned long flags,
> + unsigned long fd, unsigned long pgoff)
> +{
> + struct file *file = NULL;
> + int ret = -EBADF;
> +
> + flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
> + if (!(flags & MAP_ANONYMOUS))
> + if (!(file = fget(fd))) {
> + printk(KERN_INFO "no fd in mmap\r\n");
> + goto out;
> + }
> +
> + down_write(¤t->mm->mmap_sem);
> + ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
> + up_write(¤t->mm->mmap_sem);
> + if (file)
> + fput(file);
> +out:
> + return ret;
> +}
> +
> +unsigned long sys_mmap2(unsigned long addr, size_t len,
> + unsigned long prot, unsigned long flags,
> + unsigned long fd, unsigned long pgoff)
> +{
> + return do_mmap2(addr, len, prot, flags, fd, pgoff);
> +}
> +
> +unsigned long sys_mmap(unsigned long addr, size_t len,
> + unsigned long prot, unsigned long flags,
> + unsigned long fd, off_t offset)
> +{
> + int err = -EINVAL;
> +
> + if (offset & ~PAGE_MASK) {
> + printk(KERN_INFO "no pagemask in mmap\r\n");
> + goto out;
> + }
> +
> + err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
> +out:
> + return err;
> +}
Which mmap is uClibc really using? I suppose you only need mmap2, even for
compatibility with any binary ever built for microblaze.
Arnd <><
On Thursday 26 June 2008, [email protected] wrote:
> +
> +int sys_uname(struct old_utsname *name)
> +{
> +???????int err = -EFAULT;
> +
> +???????down_read(&uts_sem);
> +???????if (name && !copy_to_user(name, utsname(), sizeof(*name)))
> +???????????????err = 0;
> +???????up_read(&uts_sem);
> +???????return err;
> +}
This actually seems to be dead code, as your sys_call_table only contains
sys_newuname but not sys_uname.
Arnd <><
On Thu, Jun 26, 2008 at 05:35:11PM +0200, Arnd Bergmann wrote:
> On Thursday 26 June 2008, [email protected] wrote:
> > +
> > +#ifndef _ASM_MICROBLAZE_NAMEI_H
> > +#define _ASM_MICROBLAZE_NAMEI_H
> > +
> > +#ifdef __KERNEL__
> > +
> > +/* This dummy routine maybe changed to something useful
> > + * for /usr/gnemul/ emulation stuff.
> > + * Look at asm-sparc/namei.h for details.
> > + */
> > +#define __emul_prefix() NULL
> > +
> > +#endif /* __KERNEL__ */
> > +
> > +#endif /* _ASM_MICROBLAZE_NAMEI_H */
>
> Could you move this to asm-generic? Note that the comment is wrong,
> asm-sparc doesn't actually implement it any more, only ia64, mips and
> arm have an implementation that actually does something interesting
> here.
The comment could be nuked (as well as the #ifdef __KERNEL__), but for
the one #define an asm-generic header would IMHO be overkill.
> Arnd <><
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thursday 26 June 2008, Adrian Bunk wrote:
> The comment could be nuked (as well as the #ifdef __KERNEL__), but for
> the one #define an asm-generic header would IMHO be overkill.
I agree that it doesn't technically make sense to have a one-line
asm-generic header, but I like the idea of reducing the number of
asm/*.h files that actually contain anything other that
#include <asm-generic/$FILE.h>, mostly for documentation purposes.
If we can eventually agree on a way to get rid of the requirement
for explicit redirection, we can remove a larger number of source
files completely.
Arnd <><
On Thursday 26 June 2008, Arnd Bergmann wrote:
> On Thursday 26 June 2008, [email protected] wrote:
> > ?include/asm-generic/sockios.h ? ? | ? 23 +++++++++++++++++++++++
> > ?include/asm-generic/ucontext.h ? ?| ? 24 ++++++++++++++++++++++++
> > ?include/asm-microblaze/fcntl.h ? ?| ? ?1 +
> > ?include/asm-microblaze/sockios.h ?| ? 23 +++++++++++++++++++++++
> > ?include/asm-microblaze/ucontext.h | ? ?1 +
>
> Also, the sockios file here looks like it should be in asm-generic.
I just realized that you are adding the same sockios file to both
asm-generic and asm-microblaze, so I guess that is just an oversight
and you meant the microblaze file to be just a redirection.
Note that when you add an asm-generic header file that contains
a user interface, you need to add it to asm-generic/Kbuild as well
in order to get it installed correctly with make headers_install.
Running make headers_check should tell you about this problem if
it exists in other places.
Arnd <><
On Thursday 26 June 2008, Arnd Bergmann wrote:
> That still leaves the problem that a lot of your syscalls have bugs
> copied from other platforms. If you need to maintain backwards compatibility
> with your existing binaries, that's fine, but please fix the code you are
> adding.
Sorry for my harsh words here, I should have read your patch set before
commenting on the introduction.
Most of the interfaces look good now, there are really just details left
now.
So contrary to what we had discussed before, you seem to have decided
to try to maintain source level compatibility with old uClibc versions,
but dropped binary compatibility that does not make much sense on
your architecture (considering that people synthesize their CPU with
a custom instruction set and then build kernel and user space for that),
which sounds reasonable to me, based on the earlier discussion.
On a more detailed level, there are a number of decisions in your
syscall interface, so let me summarize what I see you have done
and please tell me if this was all intentional or just an arbitrary
decision that seemed good at some point:
* off_t is 32 bit, and you use both off_t and loff_t based syscalls:
This is required because uClibc calls both versions of the syscalls,
otherwise you'd need to add a lot of code in uClibc.
* You implement both legacy and rt signal interfaces, just like
everyone else does. It probably seemed like a good idea because
something might actually be using the legacy interfaces in
arch/microblaze/kernel/signal.c, but AFAICT, neither libc nor
uClibc has been using them in a very long time when they are
both present, certainly longer than microblaze has been around.
The fact that you never noticed the missing sigaltstack implementation
is a good indication that this code has never seen any testing
and probably has more bugs.
* You have not implemented the *at() family of syscalls, which seems
to be an accidental misimplementation, and you have consequently
not removed the older versions of these syscalls, which is
correct if you don't want to break source level compatibility.
* Your syscall list follows the exact same numbering as i386,
which is fairly unusual, but not incorrect, despite wasting
a little memory on the unused slots. I suppose you did this
in order to keep some level of binary compatibility with older
user code. Since you are subtly breaking compatibility now,
I would still recommend changing all the numbers so that you
can guarantee that every old binary is obviously broken
instead of showing random problems.
* You are using sys_ipc and sys_socketcall instead of the
broken-out syscalls, which is a direct consequence of following
the i386 numbering scheme.
* You have defined both stat and stat64, with different definitions.
uClibc does have a copy of the two struct definitions, so you can't
easily change them without changing uClibc as well. Otherwise it
would have been good to define struct stat in the same way as
struct stat64, and only provide sys_stat but not sys_stat64 as
a syscall.
* I have already commented on the __ARCH_WANT_SYS_* macros you
define. Independent of the off_t, signal and *at() syscalls, I
think you should reduce the number of them by as much as you
can without breaking uClibc support. You can probably remove
almost all of them (not __ARCH_WANT_SYS_RT_SIGACTION,
__ARCH_WANT_STAT64 and __ARCH_WANT_SYS_SOCKETCALL, as I mentioned).
* Your syscall_table now contains two entries for each of the
uid32 functions, e.g __NR_setreuid32 and __NR_setreuid have
different numbers but both point to sys_setreuid.
No problem here, but a little unusual. As with the other functions
I mentioned, uClibc and glibc always call the *32 variant if that
is defined and the other one if it's not. I would suggest doing either
#define __NR_setreuid32 __NR_setreuid
#define __NR_setreuid 203
or (better)
#undef __NR_setreuid32
#define __NR_setreuid 203
to make the architecture more regular in this regard.
Arnd <><
Arnd Bergmann wrote:
>
> * You are using sys_ipc and sys_socketcall instead of the
> broken-out syscalls, which is a direct consequence of following
> the i386 numbering scheme.
>
Please pretty please kill, kill, kill...
-hpa
Arnd Bergmann wrote:
> On Thursday 26 June 2008, Adrian Bunk wrote:
>> The comment could be nuked (as well as the #ifdef __KERNEL__), but for
>> the one #define an asm-generic header would IMHO be overkill.
>
> I agree that it doesn't technically make sense to have a one-line
> asm-generic header, but I like the idea of reducing the number of
> asm/*.h files that actually contain anything other that
> #include <asm-generic/$FILE.h>, mostly for documentation purposes.
>
> If we can eventually agree on a way to get rid of the requirement
> for explicit redirection, we can remove a larger number of source
> files completely.
>
The sanest way to do that would probably be something along the lines of:
-> Change include/asm-xxx to arch/xxx/include/asm
-> Create arch/generic
-> Make sure arch/xxx/include/asm and arch/generic/include/asm are both
in the include path, in that order.
That would also get rid of the symlink.
On the other hand, the redirection isn't all that bad.
-hpa
On Thu, Jun 26, 2008 at 06:38:32PM +0200, Arnd Bergmann wrote:
> On Thursday 26 June 2008, Adrian Bunk wrote:
> > The comment could be nuked (as well as the #ifdef __KERNEL__), but for
> > the one #define an asm-generic header would IMHO be overkill.
>
> I agree that it doesn't technically make sense to have a one-line
> asm-generic header, but I like the idea of reducing the number of
> asm/*.h files that actually contain anything other that
> #include <asm-generic/$FILE.h>, mostly for documentation purposes.
>
> If we can eventually agree on a way to get rid of the requirement
> for explicit redirection, we can remove a larger number of source
> files completely.
Honestly, I do not completely like your approach of getting the
microblaze port submitter to create the asm-generic files - I would
personally prefer if the microblaze port would look exactly like all
other ports and the (reasonable) changes you have in mind were not
being discussed and done as part of the submission of a new port.
After all, it won't matter whether we'll unify resp. remove
22 or 23 files.
> Arnd <><
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thursday 26 June 2008, [email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> arch/microblaze/kernel/syscall_table.S | 330 +++++++++++++++++++++++++++
> include/asm-microblaze/unistd.h | 390 ++++++++++++++++++++++++++++++++
> 2 files changed, 720 insertions(+), 0 deletions(-)
> create mode 100644 arch/microblaze/kernel/syscall_table.S
> create mode 100644 include/asm-microblaze/unistd.h
The two tables don't seem to match:
> diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
> new file mode 100644
> index 0000000..0ffa19e
> --- /dev/null
> +++ b/arch/microblaze/kernel/syscall_table.S
> @@ -0,0 +1,330 @@
> +ENTRY(sys_call_table)
> + .long sys_restart_syscall /* 0 - old "setup()" system call,
> + * used for restarting */
> + .long sys_exit
> + .long sys_ni_syscall /* was fork */
You still set __NR_fork. There is no point defining the number if you
can't actually call the syscall in the first place.
I'd suggest leaving out the definitions for these from unistd.h and
removing the comments. Who cares what the syscall was on an architecture
that you're not running?
> + .long sys_read
> + .long sys_write
> + .long sys_open /* 5 */
> + .long sys_close
> + .long sys_waitpid
> + .long sys_creat
> + .long sys_link
> + .long sys_unlink /* 10 */
> + .long sys_execve_wrapper
> + .long sys_chdir
> + .long sys_time
> + .long sys_mknod
> + .long sys_chmod /* 15 */
> + .long sys_lchown
> + .long sys_ni_syscall /* old break syscall holder */
> + .long sys_ni_syscall /* stat */
also __NR_break and __NR_oldstat
> + .long sys_lseek
> + .long sys_getpid /* 20 */
> + .long sys_mount
> + .long sys_oldumount
What applications depend on oldumount?
> + .long sys_setuid
> + .long sys_getuid
> + .long sys_stime /* 25 */
> + .long sys_ptrace
> + .long sys_alarm
> + .long sys_ni_syscall /* fstat */
> + .long sys_pause
> + .long sys_utime /* 30 */
> + .long sys_ni_syscall /* old stty syscall holder */
> + .long sys_ni_syscall /* old gtty syscall holder */
and __NR_stty and __NR_gtty
> + .long sys_access
> + .long sys_nice
> + .long sys_ni_syscall /* 35 - old ftime syscall holder */
and __NR_ftime
> + .long sys_sync
> + .long sys_kill
> + .long sys_rename
> + .long sys_mkdir
> + .long sys_rmdir /* 40 */
> + .long sys_dup
> + .long sys_pipe
> + .long sys_times
> + .long sys_ni_syscall /* old prof syscall holder */
and __NR_prof
> + .long sys_brk /* 45 */
> + .long sys_setgid
> + .long sys_getgid
> + .long sys_signal
> + .long sys_geteuid
> + .long sys_getegid /* 50 */
> + .long sys_acct
> + .long sys_umount /* recycled never used phys() */
> + .long sys_ni_syscall /* old lock syscall holder */
and __NR_lock
> + .long sys_ioctl
> + .long sys_fcntl /* 55 */
> + .long sys_ni_syscall /* old mpx syscall holder */
> + .long sys_setpgid
> + .long sys_ni_syscall /* old ulimit syscall holder */
> + .long sys_ni_syscall /* olduname */
and __NR_mpx, __NR_ulimit and __NR_olduname
> + .long sys_umask /* 60 */
> + .long sys_chroot
> + .long sys_ustat
> + .long sys_dup2
> + .long sys_getppid
> + .long sys_getpgrp /* 65 */
> + .long sys_setsid
> + .long sys_sigaction
> + .long sys_sgetmask
> + .long sys_ssetmask
> + .long sys_setreuid /* 70 */
> + .long sys_setregid
> + .long sys_sigsuspend_wrapper
> + .long sys_sigpending
> + .long sys_sethostname
> + .long sys_setrlimit /* 75 */
> + .long sys_ni_syscall /* old_getrlimit */
> + .long sys_getrusage
> + .long sys_gettimeofday
> + .long sys_settimeofday
> + .long sys_getgroups /* 80 */
> + .long sys_setgroups
> + .long sys_ni_syscall /* old_select */
> + .long sys_symlink
> + .long sys_ni_syscall /* lstat */
Three more: getrlimit, select, oldlstat
> + .long sys_readlink /* 85 */
> + .long sys_uselib
Why do you need uselib?
> + .long sys_swapon
> + .long sys_reboot
> + .long sys_ni_syscall /* old_readdir */
again: remove __NR_readdir
> + .long sys_mmap /* 90 */ /* old_mmap */
What does the comment tell us?
> + .long sys_munmap
> + .long sys_truncate
> + .long sys_ftruncate
> + .long sys_fchmod
> + .long sys_fchown /* 95 */
> + .long sys_getpriority
> + .long sys_setpriority
> + .long sys_ni_syscall /* old profil syscall holder */
> + .long sys_statfs
> + .long sys_fstatfs /* 100 */
> + .long sys_ni_syscall /* ioperm */
kill __NR_profil and __NR_ioperm
> + .long sys_socketcall
> + .long sys_syslog /* operation with system console */
That comment seems pointless here
> + .long sys_setitimer
> + .long sys_getitimer /* 105 */
> + .long sys_newstat
> + .long sys_newlstat
> + .long sys_newfstat
> + .long sys_ni_syscall /* uname */
> + .long sys_ni_syscall /* 110 */ /* iopl */
> + .long sys_vhangup
> + .long sys_ni_syscall /* old "idle" system call */
> + .long sys_ni_syscall /* old sys_vm86old */
kill __NR_olduname, __NR_iopl, __NR_idle and __NR_vm86old
> + .long sys_wait4
> + .long sys_swapoff /* 115 */
> + .long sys_sysinfo
> + .long sys_ipc
> + .long sys_fsync
> + .long sys_sigreturn_wrapper
> + .long sys_clone_wrapper /* 120 */
> + .long sys_setdomainname
> + .long sys_newuname
> + .long sys_ni_syscall /* modify_ldt */
> + .long sys_adjtimex
> + .long sys_ni_syscall /* 125: sys_mprotect */
> + .long sys_sigprocmask
> + .long sys_ni_syscall /* old "create_module" */
> + .long sys_init_module
> + .long sys_delete_module
> + .long sys_ni_syscall /* 130: old "get_kernel_syms" */
kill __NR_modify_ldt, __NR_mprotect, __NR_create_module and __NR_get_kernel_syms
> + .long sys_quotactl
> + .long sys_getpgid
> + .long sys_fchdir
> + .long sys_bdflush
> + .long sys_sysfs /* 135 */
> + .long sys_personality
> + .long sys_ni_syscall /* reserved for afs_syscall */
afs_syscall is not going to make it into the kernel, so no need to
define __NR_afs_syscall.
> + .long sys_setfsuid
> + .long sys_setfsgid
> + .long sys_llseek /* 140 */
> + .long sys_getdents
> + .long sys_select
> + .long sys_flock
> + .long sys_ni_syscall /* sys_msync */
> + .long sys_readv /* 145 */
> + .long sys_writev
> + .long sys_getsid
> + .long sys_fdatasync
> + .long sys_sysctl
> + .long sys_ni_syscall /* 150: sys_mlock */
> + .long sys_ni_syscall /* sys_munlock */
> + .long sys_ni_syscall /* sys_mlockall */
> + .long sys_ni_syscall /* sys_munlockall */
How about killing all of these mmu specific syscall numbers
right now, so you can add them as a nice block later when
you add mmu support to the kernel?
> + .long sys_sched_setparam
> + .long sys_sched_getparam /* 155 */
> + .long sys_sched_setscheduler
> + .long sys_sched_getscheduler
> + .long sys_sched_yield
> + .long sys_sched_get_priority_max
> + .long sys_sched_get_priority_min /* 160 */
> + .long sys_sched_rr_get_interval
> + .long sys_nanosleep
> + .long sys_ni_syscall /* sys_mremap */
__NR_mremap fits in there as well.
> + .long sys_setresuid
> + .long sys_getresuid /* 165 */
> + .long sys_ni_syscall /* sys_vm86 */
> + .long sys_ni_syscall /* Old sys_query_module */
__NR_vm86 and __NR_query_module can never be implemented, so kill them.
> + .long sys_poll
> + .long sys_nfsservctl
> + .long sys_setresgid /* 170 */
> + .long sys_getresgid
> + .long sys_prctl
> + .long sys_rt_sigreturn_wrapper
> + .long sys_rt_sigaction
> + .long sys_rt_sigprocmask /* 175 */
> + .long sys_rt_sigpending
> + .long sys_rt_sigtimedwait
> + .long sys_rt_sigqueueinfo
> + .long sys_rt_sigsuspend_wrapper
> + .long sys_pread64 /* 180 */
> + .long sys_pwrite64
> + .long sys_chown
> + .long sys_getcwd
> + .long sys_capget
> + .long sys_capset /* 185 */
> + .long sys_ni_syscall /* sigaltstack */
> + .long sys_sendfile
> + .long sys_ni_syscall /* reserved for streams1 */
> + .long sys_ni_syscall /* reserved for streams2 */
same for streams support.
For sigaltstack, you define both the syscall number and the function,
but not the sys_call_table entry, so it's not actually usable.
I suggest killing the implementation.
> + .long sys_vfork_wrapper /* 190 */
> + .long sys_getrlimit
> + .long sys_mmap2 /* mmap2 */
> + .long sys_truncate64
> + .long sys_ftruncate64
> + .long sys_stat64 /* 195 */
> + .long sys_lstat64
> + .long sys_fstat64
> + .long sys_lchown
> + .long sys_getuid
> + .long sys_getgid /* 200 */
> + .long sys_geteuid
> + .long sys_getegid
> + .long sys_setreuid
> + .long sys_setregid
> + .long sys_getgroups /* 205 */
> + .long sys_setgroups
> + .long sys_fchown
> + .long sys_setresuid
> + .long sys_getresuid
> + .long sys_setresgid /* 210 */
> + .long sys_getresgid
> + .long sys_chown
> + .long sys_setuid
> + .long sys_setgid
> + .long sys_setfsuid /* 215 */
> + .long sys_setfsgid
> + .long sys_pivot_root
> + .long sys_ni_syscall /* sys_mincore */
> + .long sys_ni_syscall /* sys_madvise */
These go with the other mmu syscalls.
> + .long sys_getdents64 /* 220 */
> + .long sys_fcntl64
> + .long sys_ni_syscall /* reserved for TUX */
> + .long sys_ni_syscall
> + .long sys_gettid
> + .long sys_readahead /* 225 */
> + .long sys_setxattr
> + .long sys_lsetxattr
> + .long sys_fsetxattr
> + .long sys_getxattr
> + .long sys_lgetxattr /* 230 */
> + .long sys_fgetxattr
> + .long sys_listxattr
> + .long sys_llistxattr
> + .long sys_flistxattr
> + .long sys_removexattr /* 235 */
> + .long sys_lremovexattr
> + .long sys_fremovexattr
> + .long sys_tkill
> + .long sys_sendfile64
> + .long sys_futex /* 240 */
> + .long sys_sched_setaffinity
> + .long sys_sched_getaffinity
> + .long sys_ni_syscall /* set_thread_area */
> + .long sys_ni_syscall /* get_thread_area */
same for these two
> + .long sys_io_setup /* 245 */
> + .long sys_io_destroy
> + .long sys_io_getevents
> + .long sys_io_submit
> + .long sys_io_cancel
> + .long sys_fadvise64 /* 250 */
> + .long sys_ni_syscall
> + .long sys_exit_group
> + .long sys_lookup_dcookie
> + .long sys_epoll_create
> + .long sys_epoll_ctl /* 255 */
> + .long sys_epoll_wait
> + .long sys_ni_syscall /* sys_remap_file_pages */
and this one
> + .long sys_set_tid_address
> + .long sys_timer_create
> + .long sys_timer_settime /* 260 */
> + .long sys_timer_gettime
> + .long sys_timer_getoverrun
> + .long sys_timer_delete
> + .long sys_clock_settime
> + .long sys_clock_gettime /* 265 */
> + .long sys_clock_getres
> + .long sys_clock_nanosleep
> + .long sys_statfs64
> + .long sys_fstatfs64
> + .long sys_tgkill /* 270 */
> + .long sys_utimes
> + .long sys_fadvise64_64
> + .long sys_ni_syscall /* sys_vserver */
Everyone seems to define __NR_vserver for a possible future extension,
so just leave this one in.
> + .long sys_mbind
> + .long sys_get_mempolicy
> + .long sys_set_mempolicy
> + .long sys_mq_open
> + .long sys_mq_unlink
> + .long sys_mq_timedsend
> + .long sys_mq_timedreceive /* 280 */
> + .long sys_mq_notify
> + .long sys_mq_getsetattr
> + .long sys_kexec_load
> + .long sys_waitid
> + .long sys_ni_syscall /* 285 */ /* available */
You define __NR_setaltroot 285, so I wouldn't call it available.
Better not define the number and also not reuse the syscall.
> + .long sys_add_key
> + .long sys_request_key
> + .long sys_keyctl
> + .long sys_ioprio_set
> + .long sys_ioprio_get /* 290 */
> + .long sys_inotify_init
> + .long sys_inotify_add_watch
> + .long sys_inotify_rm_watch
> + .long sys_ni_syscall /* sys_migrate_pages */
> + .long sys_ni_syscall /* 295 */ /* sys_openat */
> + .long sys_ni_syscall /* sys_mkdirat */
> + .long sys_ni_syscall /* sys_mknodat */
> + .long sys_ni_syscall /* sys_fchownat */
> + .long sys_ni_syscall /* sys_futimesat */
> + .long sys_ni_syscall /* 300 */ /* sys_fstatat64 */
> + .long sys_ni_syscall /* sys_unlinkat */
> + .long sys_ni_syscall /* sys_renameat */
> + .long sys_ni_syscall /* sys_linkat */
> + .long sys_ni_syscall /* sys_symlinkat */
> + .long sys_ni_syscall /* 305 */ /* sys_readlinkat */
> + .long sys_ni_syscall /* sys_fchmodat */
> + .long sys_ni_syscall /* sys_faccessat */
> + .long sys_ni_syscall /* pselect6 */
> + .long sys_ni_syscall /* ppoll */
> + .long sys_ni_syscall /* 310 */ /* sys_unshare */
> + .long sys_ni_syscall /* sys_set_robust_list */
> + .long sys_ni_syscall /* sys_get_robust_list */
> + .long sys_ni_syscall /* sys_splice */
> + .long sys_ni_syscall /* sys_sync_file_range */
> + .long sys_ni_syscall /* 315 */ /* sys_tee */
> + .long sys_ni_syscall /* sys_vmsplice */
All of these should definitely be activated, with the exception
of __NR_futimesat, which has already been superceded by
__NR_utimensat, so you don't need to introduce it now.
> + .long sys_move_pages
> + .long sys_getcpu
> + .long sys_epoll_pwait
> + .long sys_utimensat /* 320 */
> + .long sys_signalfd
> + .long sys_timerfd_create
> + .long sys_eventfd
> + .long sys_fallocate
> + .long sys_semtimedop /* 325 */
Up to this point, you follow the numbering scheme from x86, so why
do you stop here? x86 does not define semtimedop but rather implements
it in sys_ipc.
> + .long sys_timerfd_settime
> + .long sys_timerfd_gettime
> +#define __ARCH_WANT_IPC_PARSE_VERSION
I'm pretty sure that no application uses IPC versioning on microblaze,
so just leave this out.
> +/* #define __ARCH_WANT_OLD_READDIR */
> +/* #define __ARCH_WANT_OLD_STAT */
> +#define __ARCH_WANT_STAT64
> +#define __ARCH_WANT_SYS_ALARM
> +#define __ARCH_WANT_SYS_GETHOSTNAME
You don't have sys_gethostname in your sys_call_table, so you can
remove this.
> +#define __ARCH_WANT_SYS_PAUSE
> +#define __ARCH_WANT_SYS_SGETMASK
> +#define __ARCH_WANT_SYS_SIGNAL
> +#define __ARCH_WANT_SYS_TIME
> +#define __ARCH_WANT_SYS_UTIME
> +#define __ARCH_WANT_SYS_WAITPID
These are in all your table, but are you sure that uClibc uses them?
If you have built with your current unistd.h, a modern libc should
not add calls to these.
> +#define __ARCH_WANT_SYS_SOCKETCALL
This one (along with sys_ipc) is unfortunate, there simply
isn't a way to get around it without rebuilding your libc.
OTOH, I have seen that you are now using UID32 as I suggested,
so it seems you have already given up on full binary compatibility
and only care about source level compatibility at this point, right?
> +#define __ARCH_WANT_SYS_FADVISE64
Which one does uClibc use? fadvise, fadvise64 or fadvise64_64?
> +#define __ARCH_WANT_SYS_GETPGRP
> +#define __ARCH_WANT_SYS_LLSEEK
> +#define __ARCH_WANT_SYS_NICE
> +#define __ARCH_WANT_SYS_OLDUMOUNT
Same as the list above, do you really need them for compatibility?
> +#define __ARCH_WANT_SYS_SIGPENDING
> +#define __ARCH_WANT_SYS_SIGPROCMASK
> +#define __ARCH_WANT_SYS_RT_SIGACTION
For these, it seems that they are required, it is just unfortunate
that the logic in the kernel requires them to be set to do the right
thing, instead of left out to get it right, like the others.
Arnd <><
On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
> +ex_sw:
> + /* Get the destination register number into r5 */
> + lbui r5, r0, ex_reg_op;
> + /* Form store_word jump table offset (sw_table + (8 * regnum)) */
> + la r6, r0, sw_table;
> + add r5, r5, r5;
> + add r5, r5, r5;
> + add r5, r5, r5;
> + add r5, r5, r6;
> + bra r5;
Possibly stupid question: This is part of the unaligned store word
exception handler, yes? Shouldn't the above add's be addk's to
preserve the state of the carry register pre/post store?
Arnd Bergmann wrote:
>
> You still set __NR_fork. There is no point defining the number if you
> can't actually call the syscall in the first place.
>
Worse, it is actively *harmful* to set the number; klibc or anything
that uses similar kinds of scripts for portability will see the symbol
and think the system call is available.
-hpa
Adrian Bunk napsal(a):
> On Thu, Jun 26, 2008 at 02:29:31PM +0200, [email protected] wrote:
>> ...
>> --- /dev/null
>> +++ b/arch/microblaze/Makefile
>> ...
>> +# Work out HW multipler support. This is icky.
>> +# 1. Spartan2 has no HW multiplers.
>> +# 2. MicroBlaze v3.x always uses them, except in Spartan 2
>> +# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
>> +ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
>> + ifeq ($(CPU_MAJOR),3)
>> + CPUFLAGS-1 += -mno-xl-soft-mul
>> + else
>> + # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
>> + CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
>> + CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
>> + endif
>> +endif
>> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
>> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
>> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
>> +
>> +CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
>> +
>> +# The various CONFIG_XILINX cpu features options are integers 0/1/2...
>> +# rather than bools y/n
>> +CFLAGS += $(CPUFLAGS-1)
>> +CFLAGS += $(CPUFLAGS-2)
>> ...
>
> Why are the options not bools?
>
> cu
> Adrian
because CONFIG_XILINX_... are 0, 1 or 2 not only y, n.
M
Hi Adrian,
> On Thu, Jun 26, 2008 at 02:29:29PM +0200, [email protected] wrote:
>> Hi everybody,
>>
>> current linux version is 2.6.26-rc8 and I think this is the right time
>> to send latest patches againts rc8 for Microblaze CPU.
>> ...
>
> Thanks for your work on getting the architecture included.
>
> I have two questions:
>
> Where can I find a toolchain for compiling a Microblaze kernel?
I personally use petalogix toolchain from http://www.petalogix.com.
> What is the status of Microblaze support in upstream binutils and gcc?
I don't have any information about. We will discuss with John Williams and guys
from Xilinx
what we can do for it.
M
>> Best regards,
>> Michal Simek
>
> TIA
> Adrian
>
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 25.6.2008 04:13
OK. We have to change fdt generator with Steve.
Steve: can you look at it?
M
> [email protected] wrote:
>> From: Michal Simek <[email protected]>
>>
>>
>> Signed-off-by: Michal Simek <[email protected]>
>> ---
>> arch/microblaze/platform/generic/system.dts | 300
>> +++++++++++++++++++++++++++
>> 1 files changed, 300 insertions(+), 0 deletions(-)
>> create mode 100644 arch/microblaze/platform/generic/system.dts
>>
>> diff --git a/arch/microblaze/platform/generic/system.dts
>> b/arch/microblaze/platform/generic/system.dts
>> new file mode 100644
>> index 0000000..724a037
>> --- /dev/null
>> +++ b/arch/microblaze/platform/generic/system.dts
>> @@ -0,0 +1,300 @@
>> +/*
>> + * (C) Copyright 2007-2008 Xilinx, Inc.
>> + * (C) Copyright 2007-2008 Michal Simek
>> + *
>> + * Michal SIMEK <[email protected]>
>> + *
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License as
>> + * published by the Free Software Foundation; either version 2 of
>> + * the License, or (at your option) any later version.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write to the Free Software
>> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
>> + * MA 02111-1307 USA
>> + *
>> + * CAUTION: This file is automatically generated by libgen.
>> + * Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
>> + * Generate by FDT v1.00.a
>> + */
>> +
>> +/ {
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + compatible = "xlnx,microblaze";
>> + model = "testing";
>> + DDR_SDRAM_32Mx16: memory@20000000 {
>> + device_type = "memory";
>> + reg = < 20000000 2000000 >;
>> + } ;
>> + chosen {
>> + bootargs = "console=ttyUL0,115200 loglevel=15";
>> + linux,stdout-path = "/plb@0/serial@40100000";
>> + } ;
>> + cpus {
>> + #address-cells = <1>;
>> + #cpus = <1>;
>> + #size-cells = <0>;
>> + microblaze_0: cpu@0 {
>> + clock-frequency = <2faf080>;
>
>
> This should really be using the /dts-v1/ format now.
>
> Thanks,
> jdl
>
> _______________________________________________
> Linuxppc-dev mailing list
> [email protected]
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 25.6.2008 04:13
Hi Arnd,
> On Thursday 26 June 2008, [email protected] wrote:
>> We have there still problem with syscalls and we don't have chance to
>> fix it to stable version, this is not part which I can do yourself.
>> Microblaze will be n + 1 platform which use some old syscalls.
>> I hope you understand.
>
> That still leaves the problem that a lot of your syscalls have bugs
> copied from other platforms. If you need to maintain backwards compatibility
> with your existing binaries, that's fine, but please fix the code you are
> adding.
This is for now. I'll remove when I will have new toolchain.
I saw an email from you about.
M
OK.I'll fix it.
M
>> +++ b/include/asm-generic/termbits.h
>> @@ -0,0 +1,200 @@
>
>> +/* c_cflag bit meaning */
>> +
>> +#define CBAUD 0010017
>> +#define B0 0000000 /* hang up */
>
> You need BOTHER in here as well - especially if it is going to be generic.
>
> _______________________________________________
> Linuxppc-dev mailing list
> [email protected]
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>
>> +
>> +/*
>> + * sys_ipc() is the de-multiplexer for the SysV IPC calls..
>> + *
>> + * This is really horribly ugly.
>> + */
>
> If it's so horribly ugly, don't do it this way ;-)
:-) this is not my part of code. I'll remove it with syscall changes.
>> +int
>> +sys_ipc(uint call, int first, int second, int third, void *ptr, long fifth)
>> +{
>> + int version, ret;
>> +
>> + version = call >> 16; /* hack for backward compatibility */
>> + call &= 0xffff;
>
> Backwards compatibility with what?
I don't know.
John: I suppose this is your comment.
>> +static inline unsigned long
>> +do_mmap2(unsigned long addr, size_t len,
>> + unsigned long prot, unsigned long flags,
>> + unsigned long fd, unsigned long pgoff)
>> +{
>> + struct file *file = NULL;
>> + int ret = -EBADF;
>> +
>> + flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
>> + if (!(flags & MAP_ANONYMOUS))
>> + if (!(file = fget(fd))) {
>> + printk(KERN_INFO "no fd in mmap\r\n");
>> + goto out;
>> + }
>> +
>> + down_write(¤t->mm->mmap_sem);
>> + ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
>> + up_write(¤t->mm->mmap_sem);
>> + if (file)
>> + fput(file);
>> +out:
>> + return ret;
>> +}
>> +
>> +unsigned long sys_mmap2(unsigned long addr, size_t len,
>> + unsigned long prot, unsigned long flags,
>> + unsigned long fd, unsigned long pgoff)
>> +{
>> + return do_mmap2(addr, len, prot, flags, fd, pgoff);
>> +}
>> +
>> +unsigned long sys_mmap(unsigned long addr, size_t len,
>> + unsigned long prot, unsigned long flags,
>> + unsigned long fd, off_t offset)
>> +{
>> + int err = -EINVAL;
>> +
>> + if (offset & ~PAGE_MASK) {
>> + printk(KERN_INFO "no pagemask in mmap\r\n");
>> + goto out;
>> + }
>> +
>> + err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
>> +out:
>> + return err;
>> +}
>
> Which mmap is uClibc really using? I suppose you only need mmap2, even for
> compatibility with any binary ever built for microblaze.
I don't know. Microblaze should be compiled with uClibc and glibc. In case you
need mmap2 for uClibc and mmap for glibc it is ok.
M
> Arnd <><
> On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
>> +ex_sw:
>> + /* Get the destination register number into r5 */
>> + lbui r5, r0, ex_reg_op;
>> + /* Form store_word jump table offset (sw_table + (8 * regnum)) */
>> + la r6, r0, sw_table;
>> + add r5, r5, r5;
>> + add r5, r5, r5;
>> + add r5, r5, r5;
>> + add r5, r5, r6;
>> + bra r5;
>
> Possibly stupid question: This is part of the unaligned store word
> exception handler, yes? Shouldn't the above add's be addk's to
> preserve the state of the carry register pre/post store?
I don't think that addk is important. I have some tests for exception, I want to
cover full exception handling.
M
> On Thu, Jun 26, 2008 at 02:29:59PM +0200, [email protected] wrote:
>> From: Michal Simek <[email protected]>
>>
>>
>> Signed-off-by: Michal Simek <[email protected]>
>> ---
>> 0 files changed, 0 insertions(+), 0 deletions(-)
>> create mode 100644 include/asm-microblaze/a.out.h
>>
>> diff --git a/include/asm-microblaze/a.out.h b/include/asm-microblaze/a.out.h
>> new file mode 100644
>> index 0000000..e69de29
>
> As of 2.6.26-rc7 you do no longer need this header.
>
> cu
> Adrian
I expect it but I haven't information about. I'll check it.
M
OK. I'do it.
M
> On Thu, Jun 26, 2008 at 02:29:36PM +0200, [email protected] wrote:
>> From: Michal Simek <[email protected]>
>>
>>
>> Signed-off-by: Michal Simek <[email protected]>
>> ---
>> include/asm-microblaze/semaphore.h | 1 +
>> 1 files changed, 1 insertions(+), 0 deletions(-)
>> create mode 100644 include/asm-microblaze/semaphore.h
>>
>> diff --git a/include/asm-microblaze/semaphore.h b/include/asm-microblaze/semaphore.h
>> new file mode 100644
>> index 0000000..d9b2034
>> --- /dev/null
>> +++ b/include/asm-microblaze/semaphore.h
>> @@ -0,0 +1 @@
>> +#include <linux/semaphore.h>
>
> In -next all asm/semaphore.h headers gained a
> #warning Use linux/semaphore.h, not asm/semaphore.h
> and the number of asm/semaphore.h is approaching zero.
>
> You can simply drop this patch.
>
> cu
> Adrian
>
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 25.6.2008 04:13
Michal Simek wrote:
> I expect it but I haven't information about. I'll check it.
I'm assuming Microblaze doesn't actually add a.out support, does it?
-hpa
On Thu, Jun 26, 2008 at 08:46:44PM +0200, Michal Simek wrote:
> Adrian Bunk napsal(a):
> > On Thu, Jun 26, 2008 at 02:29:31PM +0200, [email protected] wrote:
> >> ...
> >> --- /dev/null
> >> +++ b/arch/microblaze/Makefile
> >> ...
> >> +# Work out HW multipler support. This is icky.
> >> +# 1. Spartan2 has no HW multiplers.
> >> +# 2. MicroBlaze v3.x always uses them, except in Spartan 2
> >> +# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
> >> +ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
> >> + ifeq ($(CPU_MAJOR),3)
> >> + CPUFLAGS-1 += -mno-xl-soft-mul
> >> + else
> >> + # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
> >> + CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
> >> + CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
> >> + endif
> >> +endif
> >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
> >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
> >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
> >> +
> >> +CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
> >> +
> >> +# The various CONFIG_XILINX cpu features options are integers 0/1/2...
> >> +# rather than bools y/n
> >> +CFLAGS += $(CPUFLAGS-1)
> >> +CFLAGS += $(CPUFLAGS-2)
> >> ...
> >
> > Why are the options not bools?
> >
> > cu
> > Adrian
>
> because CONFIG_XILINX_... are 0, 1 or 2 not only y, n.
I understood that.
But _why_ are these options not bools?
In most cases the order of gcc flags does not matter, and it is not
obvious for me why the order matters here.
> M
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Thu, Jun 26, 2008 at 12:19 PM, Michal Simek <[email protected]> wrote:
>> On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
>>> +ex_sw:
>>> + /* Get the destination register number into r5 */
>>> + lbui r5, r0, ex_reg_op;
>>> + /* Form store_word jump table offset (sw_table + (8 * regnum)) */
>>> + la r6, r0, sw_table;
>>> + add r5, r5, r5;
>>> + add r5, r5, r5;
>>> + add r5, r5, r5;
>>> + add r5, r5, r6;
>>> + bra r5;
>>
>> Possibly stupid question: This is part of the unaligned store word
>> exception handler, yes? Shouldn't the above add's be addk's to
>> preserve the state of the carry register pre/post store?
>
> I don't think that addk is important. I have some tests for exception, I want to
> cover full exception handling.
Okay. It doesn't match your other exception handlers, though, which is
why I noticed it in the first place (they use addk).
On Thu, Jun 26, 2008 at 08:50:37PM +0200, Michal Simek wrote:
> Hi Adrian,
>
> > On Thu, Jun 26, 2008 at 02:29:29PM +0200, [email protected] wrote:
> >> Hi everybody,
> >>
> >> current linux version is 2.6.26-rc8 and I think this is the right time
> >> to send latest patches againts rc8 for Microblaze CPU.
> >> ...
> >
> > Thanks for your work on getting the architecture included.
> >
> > I have two questions:
> >
> > Where can I find a toolchain for compiling a Microblaze kernel?
> I personally use petalogix toolchain from http://www.petalogix.com.
>
> > What is the status of Microblaze support in upstream binutils and gcc?
>
> I don't have any information about. We will discuss with John Williams and guys
> from Xilinx
> what we can do for it.
Thanks!
> M
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
It's on my list of things to do, but I'm swamped with a few deadlines at
the moment.
Steve
> -----Original Message-----
> From: [email protected]
[mailto:linuxppc-dev-
> [email protected]] On Behalf Of
Michal Simek
> Sent: Thursday, June 26, 2008 11:57 AM
> To: Jon Loeliger
> Cc: [email protected]; [email protected];
[email protected]; [email protected];
> [email protected]; [email protected];
[email protected]; [email protected];
> [email protected]; [email protected]; [email protected]; John
Linn; [email protected]
> Subject: Re: [PATCH 12/60] microblaze_v4: Generic dts file for
platforms
>
> OK. We have to change fdt generator with Steve.
>
> Steve: can you look at it?
>
> M
>
>
> > [email protected] wrote:
> >> From: Michal Simek <[email protected]>
> >>
> >>
> >> Signed-off-by: Michal Simek <[email protected]>
> >> ---
> >> arch/microblaze/platform/generic/system.dts | 300
> >> +++++++++++++++++++++++++++
> >> 1 files changed, 300 insertions(+), 0 deletions(-)
> >> create mode 100644 arch/microblaze/platform/generic/system.dts
> >>
> >> diff --git a/arch/microblaze/platform/generic/system.dts
> >> b/arch/microblaze/platform/generic/system.dts
> >> new file mode 100644
> >> index 0000000..724a037
> >> --- /dev/null
> >> +++ b/arch/microblaze/platform/generic/system.dts
> >> @@ -0,0 +1,300 @@
> >> +/*
> >> + * (C) Copyright 2007-2008 Xilinx, Inc.
> >> + * (C) Copyright 2007-2008 Michal Simek
> >> + *
> >> + * Michal SIMEK <[email protected]>
> >> + *
> >> + * This program is free software; you can redistribute it and/or
> >> + * modify it under the terms of the GNU General Public License as
> >> + * published by the Free Software Foundation; either version 2 of
> >> + * the License, or (at your option) any later version.
> >> + *
> >> + * This program is distributed in the hope that it will be useful,
> >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> >> + * GNU General Public License for more details.
> >> + *
> >> + * You should have received a copy of the GNU General Public
License
> >> + * along with this program; if not, write to the Free Software
> >> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> >> + * MA 02111-1307 USA
> >> + *
> >> + * CAUTION: This file is automatically generated by libgen.
> >> + * Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
> >> + * Generate by FDT v1.00.a
> >> + */
> >> +
> >> +/ {
> >> + #address-cells = <1>;
> >> + #size-cells = <1>;
> >> + compatible = "xlnx,microblaze";
> >> + model = "testing";
> >> + DDR_SDRAM_32Mx16: memory@20000000 {
> >> + device_type = "memory";
> >> + reg = < 20000000 2000000 >;
> >> + } ;
> >> + chosen {
> >> + bootargs = "console=ttyUL0,115200 loglevel=15";
> >> + linux,stdout-path = "/plb@0/serial@40100000";
> >> + } ;
> >> + cpus {
> >> + #address-cells = <1>;
> >> + #cpus = <1>;
> >> + #size-cells = <0>;
> >> + microblaze_0: cpu@0 {
> >> + clock-frequency = <2faf080>;
> >
> >
> > This should really be using the /dts-v1/ format now.
> >
> > Thanks,
> > jdl
> >
> > _______________________________________________
> > Linuxppc-dev mailing list
> > [email protected]
> > https://ozlabs.org/mailman/listinfo/linuxppc-dev
> >
> >
> >
------------------------------------------------------------------------
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG.
> > Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date:
25.6.2008 04:13
> _______________________________________________
> Linuxppc-dev mailing list
> [email protected]
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
We're looking at putting a microblaze toolchain on git.xilinx.com, which
will be slightly easier than grabbing all of petalinux, if people just
want to compile test it.
At the moment, we would very much like to push the microblaze
architecture code to the gcc mainline. I believe the main barrier is
that we don't have someone with the bandwidth to interact with the gcc
community at the moment, although hiring someone to work on it may be in
the works. (Anyone interested?)
Steve
> -----Original Message-----
> From: Adrian Bunk [mailto:[email protected]]
> Sent: Thursday, June 26, 2008 12:43 PM
> To: Michal Simek
> Cc: [email protected]; [email protected];
[email protected]; Stephen Neuendorffer;
> John Linn; [email protected]; [email protected];
[email protected]; [email protected];
> [email protected]; [email protected];
[email protected];
> [email protected]; [email protected]; [email protected]
> Subject: Re: Microblaze init port v4
>
> On Thu, Jun 26, 2008 at 08:50:37PM +0200, Michal Simek wrote:
> > Hi Adrian,
> >
> > > On Thu, Jun 26, 2008 at 02:29:29PM +0200, [email protected] wrote:
> > >> Hi everybody,
> > >>
> > >> current linux version is 2.6.26-rc8 and I think this is the right
time
> > >> to send latest patches againts rc8 for Microblaze CPU.
> > >> ...
> > >
> > > Thanks for your work on getting the architecture included.
> > >
> > > I have two questions:
> > >
> > > Where can I find a toolchain for compiling a Microblaze kernel?
> > I personally use petalogix toolchain from http://www.petalogix.com.
> >
> > > What is the status of Microblaze support in upstream binutils and
gcc?
> >
> > I don't have any information about. We will discuss with John
Williams and guys
> > from Xilinx
> > what we can do for it.
>
> Thanks!
>
> > M
>
> cu
> Adrian
>
> --
>
> "Is there not promise of rain?" Ling Tan asked suddenly out
> of the darkness. There had been need of rain for many days.
> "Only a promise," Lao Er said.
> Pearl S. Buck - Dragon Seed
>
This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
Ray Lee napsal(a):
> On Thu, Jun 26, 2008 at 12:19 PM, Michal Simek <[email protected]> wrote:
>>> On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
>>>> +ex_sw:
>>>> + /* Get the destination register number into r5 */
>>>> + lbui r5, r0, ex_reg_op;
>>>> + /* Form store_word jump table offset (sw_table + (8 * regnum)) */
>>>> + la r6, r0, sw_table;
>>>> + add r5, r5, r5;
>>>> + add r5, r5, r5;
>>>> + add r5, r5, r5;
>>>> + add r5, r5, r6;
>>>> + bra r5;
>>> Possibly stupid question: This is part of the unaligned store word
>>> exception handler, yes? Shouldn't the above add's be addk's to
>>> preserve the state of the carry register pre/post store?
>> I don't think that addk is important. I have some tests for exception, I want to
>> cover full exception handling.
>
> Okay. It doesn't match your other exception handlers, though, which is
> why I noticed it in the first place (they use addk).
thanks for notice. I'll keep in my mind when I test it.
M
> Michal Simek wrote:
>> I expect it but I haven't information about. I'll check it.
>
> I'm assuming Microblaze doesn't actually add a.out support, does it?
>
> -hpa
I think that any support were there but I assume that no one use it.
M
Michal Simek wrote:
>> Michal Simek wrote:
>>> I expect it but I haven't information about. I'll check it.
>> I'm assuming Microblaze doesn't actually add a.out support, does it?
>
> I think that any support were there but I assume that no one use it.
Most other new architectures don't bother, hence the question.
-hpa
Ok. Thanks for information Steve.
Jon: Only for sure the main difference is only in value handling. Am I right?
If yes, it is easy to change.
M
> It's on my list of things to do, but I'm swamped with a few deadlines at
> the moment.
>
> Steve
>
>> -----Original Message-----
>> From: [email protected]
> [mailto:linuxppc-dev-
>> [email protected]] On Behalf Of
> Michal Simek
>> Sent: Thursday, June 26, 2008 11:57 AM
>> To: Jon Loeliger
>> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
>> [email protected]; [email protected];
> [email protected]; [email protected];
>> [email protected]; [email protected]; [email protected]; John
> Linn; [email protected]
>> Subject: Re: [PATCH 12/60] microblaze_v4: Generic dts file for
> platforms
>> OK. We have to change fdt generator with Steve.
>>
>> Steve: can you look at it?
>>
>> M
>>
>>
>>> [email protected] wrote:
>>>> From: Michal Simek <[email protected]>
>>>>
>>>>
>>>> Signed-off-by: Michal Simek <[email protected]>
>>>> ---
>>>> arch/microblaze/platform/generic/system.dts | 300
>>>> +++++++++++++++++++++++++++
>>>> 1 files changed, 300 insertions(+), 0 deletions(-)
>>>> create mode 100644 arch/microblaze/platform/generic/system.dts
>>>>
>>>> diff --git a/arch/microblaze/platform/generic/system.dts
>>>> b/arch/microblaze/platform/generic/system.dts
>>>> new file mode 100644
>>>> index 0000000..724a037
>>>> --- /dev/null
>>>> +++ b/arch/microblaze/platform/generic/system.dts
>>>> @@ -0,0 +1,300 @@
>>>> +/*
>>>> + * (C) Copyright 2007-2008 Xilinx, Inc.
>>>> + * (C) Copyright 2007-2008 Michal Simek
>>>> + *
>>>> + * Michal SIMEK <[email protected]>
>>>> + *
>>>> + * This program is free software; you can redistribute it and/or
>>>> + * modify it under the terms of the GNU General Public License as
>>>> + * published by the Free Software Foundation; either version 2 of
>>>> + * the License, or (at your option) any later version.
>>>> + *
>>>> + * This program is distributed in the hope that it will be useful,
>>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>>> + * GNU General Public License for more details.
>>>> + *
>>>> + * You should have received a copy of the GNU General Public
> License
>>>> + * along with this program; if not, write to the Free Software
>>>> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
>>>> + * MA 02111-1307 USA
>>>> + *
>>>> + * CAUTION: This file is automatically generated by libgen.
>>>> + * Version: Xilinx EDK 9.2.02 EDK_Jm_SP2.3
>>>> + * Generate by FDT v1.00.a
>>>> + */
>>>> +
>>>> +/ {
>>>> + #address-cells = <1>;
>>>> + #size-cells = <1>;
>>>> + compatible = "xlnx,microblaze";
>>>> + model = "testing";
>>>> + DDR_SDRAM_32Mx16: memory@20000000 {
>>>> + device_type = "memory";
>>>> + reg = < 20000000 2000000 >;
>>>> + } ;
>>>> + chosen {
>>>> + bootargs = "console=ttyUL0,115200 loglevel=15";
>>>> + linux,stdout-path = "/plb@0/serial@40100000";
>>>> + } ;
>>>> + cpus {
>>>> + #address-cells = <1>;
>>>> + #cpus = <1>;
>>>> + #size-cells = <0>;
>>>> + microblaze_0: cpu@0 {
>>>> + clock-frequency = <2faf080>;
>>>
>>> This should really be using the /dts-v1/ format now.
>>>
>>> Thanks,
>>> jdl
>>>
>>> _______________________________________________
>>> Linuxppc-dev mailing list
>>> [email protected]
>>> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>>>
>>>
>>>
> ------------------------------------------------------------------------
>>>
>>> No virus found in this incoming message.
>>> Checked by AVG.
>>> Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date:
> 25.6.2008 04:13
>> _______________________________________________
>> Linuxppc-dev mailing list
>> [email protected]
>> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>
>
> This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
>
>
> _______________________________________________
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> [email protected]
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 25.6.2008 04:13
Michal Simek wrote:
> Ok. Thanks for information Steve.
>
> Jon: Only for sure the main difference is only in value handling. Am I right?
> If yes, it is easy to change.
>
> M
Right. It is essentially C-like now. And has a
declarator at the top with /dts-v1/. Essentially
all of the DTS files in arch/powerpc/boot/dts should
be V1 now. Lots of examples.
Except in Byte Arrays: x = [ CA FE BA BE FE ED D0 0D ];
jdl
On Thursday 26 June 2008, H. Peter Anvin wrote:
>
> The sanest way to do that would probably be something along the lines of:
>
> -> Change include/asm-xxx to arch/xxx/include/asm
Sam Ravnborg is already working on this part.
> -> Create arch/generic
> -> Make sure arch/xxx/include/asm and arch/generic/include/asm are both
> in the include path, in that order.
>
> That would also get rid of the symlink.
It requires two more steps:
- change all remaining users of #include <asm-generic/*.h> to include
that file with the new name, e.g. #include <generic/asm/foo.h> if we
have it in the right path.
- change the way 'make headers_install' works so that the files get
installed to the right location in $PREFIX/include/asm/ instead of
$PREFIX/include/asm-generic/ for each header that does not exist
in arch/foo/include/asm.
These changes are probably somewhat controversial, and the first
one is much more invasive than the patches that Sam has, so I'd
not want to do them at the same time.
> On the other hand, the redirection isn't all that bad.
Agreed. I just have the hope that someone comes up with the magical
solution for this problem that makes it a lot nicer than the suggestions
so far or the current way of doing it ;-)
Arnd <><
On Thursday 26 June 2008, Michal Simek wrote:
>
> >> +
> >> +/*
> >> + * sys_ipc() is the de-multiplexer for the SysV IPC calls..
> >> + *
> >> + * This is really horribly ugly.
> >> + */
> >
> > If it's so horribly ugly, don't do it this way ;-)
>
> :-) this is not my part of code. I'll remove it with syscall changes.
Yes, I was aware of that. I believe the comment was initially done in
order to prevent people from copying it to new architectures, but it
never worked.
> >> +int
> >> +sys_ipc(uint call, int first, int second, int third, void *ptr, long fifth)
> >> +{
> >> + int version, ret;
> >> +
> >> + version = call >> 16; /* hack for backward compatibility */
> >> + call &= 0xffff;
> >
> > Backwards compatibility with what?
>
> I don't know.
> John: I suppose this is your comment.
No, it was a trick question, this is also copied from i386. It was meant
for the iBCS2 compatibility layer that provides support for running
Unix binaries from the late 80s, but never quite made it into the Linux
kernel.
> >> +unsigned long sys_mmap2(unsigned long addr, size_t len,
> >> + unsigned long prot, unsigned long flags,
> >> + unsigned long fd, unsigned long pgoff)
> >> +{
> >> + return do_mmap2(addr, len, prot, flags, fd, pgoff);
> >> +}
> >> +
> >> +unsigned long sys_mmap(unsigned long addr, size_t len,
> >> + unsigned long prot, unsigned long flags,
> >> + unsigned long fd, off_t offset)
> >> +{
> >> + int err = -EINVAL;
> >> +
> >> + if (offset & ~PAGE_MASK) {
> >> + printk(KERN_INFO "no pagemask in mmap\r\n");
> >> + goto out;
> >> + }
> >> +
> >> + err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
> >> +out:
> >> + return err;
> >> +}
> >
> > Which mmap is uClibc really using? I suppose you only need mmap2, even for
> > compatibility with any binary ever built for microblaze.
>
> I don't know. Microblaze should be compiled with uClibc and glibc. In case you
> need mmap2 for uClibc and mmap for glibc it is ok.
I looked at uClibc again and found that you probably need both for compatibility
and functionality, same as for other calls that can take either an off_t or
a loff_t. Only if you changed the libc/sysdeps/linux/microblaze/mmap.c code,
you could get rid of sys_mmap(). I don't think you need to worry about glibc
at this point, because as I understand it the old port is broken anyway
and it's easier to do a new microblaze glibc port from scratch than trying
to update it to the latest glibc version...
Arnd <><
On Thursday 26 June 2008, Adrian Bunk wrote:
> Honestly, I do not completely like your approach of getting the
> microblaze port submitter to create the asm-generic files - I would
> personally prefer if the microblaze port would look exactly like all
> other ports and the (reasonable) changes you have in mind were not
> being discussed and done as part of the submission of a new port.
But it works really well this way ;-). My point is that a new port
should look just like all the other ports should have looked as
well, not like they did. When it comes to the ABI, you
cannot make incompatible changes after it's merged, so IMHO all
ABI defining headers should go to asm-generic if possible.
Since there doesn't seem to be anyone investing work into moving the
files there (I started it before, but got bored before submitting
them all myself), the point of adding a new architecture is exactly
the right one for putting the file to asm-generic. For Michal, there
is no difference between putting the file into asm-generic or
asm-microblaze, other than that he has to change his existing
patch once, but in return he gets fewer files to maintain afterwards.
The fundamental principle here is: if you want your code to get in,
do it in a way that makes your own code cleaner by making it cleaner
for everyone else as well.
The result is that more people look at the code, and that Michal's
name gets more widely known, so the next time he needs something
from another developer, he's more likely to get heard because
you think of him as the person that did all the useful work on
the asm-generic files.
> After all, it won't matter whether we'll unify resp. remove
> 22 or 23 files.
That wasn't my idea. The logic was that if one more file exists
in asm-generic that can be removed from the architectures,
we get 22 more files to remove without anyone having to look
at the big picture. When microblaze is in, I can compile a list
with asm-generic files that can be used to replace the architecture
specific files, so the arch maintainers can decide on their own
whether to clean their own stuff up or not.
With namei.h, I may have gone too far to request moving it
to asm-generic as part of the microblaze merge, because it's
not an ABI header, but I think it's a step in the right direction
anyway, and I may put it there myself if I ever get to do
my "how to port Linux to a new architecture the right way" paper.
Arnd <><
On 6/27/08, Adrian Bunk <[email protected]> wrote:
> On Thu, Jun 26, 2008 at 08:46:44PM +0200, Michal Simek wrote:
> > Adrian Bunk napsal(a):
> > > On Thu, Jun 26, 2008 at 02:29:31PM +0200, [email protected] wrote:
> > >> ...
> > >> --- /dev/null
> > >> +++ b/arch/microblaze/Makefile
> > >> ...
> > >> +# Work out HW multipler support. This is icky.
> > >> +# 1. Spartan2 has no HW multiplers.
> > >> +# 2. MicroBlaze v3.x always uses them, except in Spartan 2
> > >> +# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
> > >> +ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
> > >> + ifeq ($(CPU_MAJOR),3)
> > >> + CPUFLAGS-1 += -mno-xl-soft-mul
> > >> + else
> > >> + # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
> > >> + CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
> > >> + CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
> > >> + endif
> > >> +endif
> > >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
> > >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
> > >> +CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
> > >> +
> > >> +CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
> > >> +
> > >> +# The various CONFIG_XILINX cpu features options are integers 0/1/2...
> > >> +# rather than bools y/n
> > >> +CFLAGS += $(CPUFLAGS-1)
> > >> +CFLAGS += $(CPUFLAGS-2)
> > >> ...
> > >
> > > Why are the options not bools?
> > because CONFIG_XILINX_... are 0, 1 or 2 not only y, n.
> I understood that.
>
> But _why_ are these options not bools?
The CPU has 3 levels of multiplier support -
0=none
1= 32-bit (mul produces 32 LSB of a 32x32 bit multiply)
2= 32-bit high (mulhi produces 32 MSB of a 32x32 bit multiply).
The CPU-specific options are pulled directly out of the MicroBlaze
system design tools as an auto-generated config file that we drop into
the kernel build. Doing so ensures consistency between the hardware
and the kernel running on it.
These options come out of the tools as intergers, 0,1,2. We found in
the early days of microblaze that lots of users built unbootable
kernels because they manually transcribed these options incorrectly.
So, we integrate as closely as we reasonable can to prevent these sort
of CPU configuration errors.
These options are now limited to about 6 CPU-specific options - things
we must know about the CPU at compile time to set the correct cpuflags
to GCC.
All else is set through open firmware or querying a Processor Version
Register at boot.
Regards,
John
--
John Williams, PhD, B.Eng, B.IT
PetaLogix - Linux Solutions for a Reconfigurable World
w: http://www.petalogix.com p: +61-7-30090663 f: +61-7-30090663
Hi,
On 6/27/08, Adrian Bunk <[email protected]> wrote:
> On Thu, Jun 26, 2008 at 02:29:29PM +0200, [email protected] wrote:
> > current linux version is 2.6.26-rc8 and I think this is the right time
> > to send latest patches againts rc8 for Microblaze CPU.
> >...
>
> Thanks for your work on getting the architecture included.
>
> I have two questions:
>
> Where can I find a toolchain for compiling a Microblaze kernel?
We bundle it in the PetaLinux distro:
http://developer.petalogix.com
> What is the status of Microblaze support in upstream binutils and gcc?
noMMU uClibc toolchain is at 3.4.1, MMU/glibc is at 4.1.1 Xilinx does
their gcc/binutils stuff mostly in-house, and none of it is upstream.
We (PetaLogix) build and distribute the uClibc toolchain, and we are
slowly merging the MMU support across to our regular distro, that will
also include the glibc tools.
Cheers,
John
--
John Williams, PhD, B.Eng, B.IT
PetaLogix - Linux Solutions for a Reconfigurable World
w: http://www.petalogix.com p: +61-7-30090663 f: +61-7-30090663
On Thu, 26 Jun 2008, [email protected] wrote:
> +
> +static inline void udelay(unsigned long usec)
> +{
> +}
shouldnt this function be named zerodelay() ?
Thanks,
tglx
On Fri, Jun 27, 2008 at 01:23:05AM +0200, Arnd Bergmann wrote:
> On Thursday 26 June 2008, Adrian Bunk wrote:
> > Honestly, I do not completely like your approach of getting the
> > microblaze port submitter to create the asm-generic files - I would
> > personally prefer if the microblaze port would look exactly like all
> > other ports and the (reasonable) changes you have in mind were not
> > being discussed and done as part of the submission of a new port.
>
> But it works really well this way ;-). My point is that a new port
> should look just like all the other ports should have looked as
> well, not like they did. When it comes to the ABI, you
> cannot make incompatible changes after it's merged, so IMHO all
> ABI defining headers should go to asm-generic if possible.
>...
For the ABI it doesn't matter where the headers are.
> > After all, it won't matter whether we'll unify resp. remove
> > 22 or 23 files.
>
> That wasn't my idea. The logic was that if one more file exists
> in asm-generic that can be removed from the architectures,
> we get 22 more files to remove without anyone having to look
> at the big picture. When microblaze is in,
Discussions of the "big picture" should be in an own thread, not as
part of a merge of a new architecture.
I am not an architecture maintainer, but I do not like the way you want
to couple the microblaze merge with the move of stuff to asm-generic.
They both make sense, but they are clearly separate issues.
> I can compile a list
> with asm-generic files that can be used to replace the architecture
> specific files, so the arch maintainers can decide on their own
> whether to clean their own stuff up or not.
>...
We need either all architectures changed or none at all - we do need the
arch headers to become more similar, not more different.
And this is why we need an agreement _before_ an asm-generic header gets
added, not after it.
> Arnd <><
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
>> +
>> +static inline void udelay(unsigned long usec)
>> +{
>> +}
>
>shouldnt this function be named zerodelay() ?
>
>Thanks,
> tglx
I have prepared implementation of this function which sent me JW.
I did some changes which I test it because I found problem there.
M
Hi Adrian and Arnd,
>> > After all, it won't matter whether we'll unify resp. remove
>> > 22 or 23 files.
>>
>> That wasn't my idea. The logic was that if one more file exists
>> in asm-generic that can be removed from the architectures,
>> we get 22 more files to remove without anyone having to look
>> at the big picture. When microblaze is in,
>
>Discussions of the "big picture" should be in an own thread, not as
>part of a merge of a new architecture.
>
>I am not an architecture maintainer, but I do not like the way you want
>to couple the microblaze merge with the move of stuff to asm-generic.
>
>They both make sense, but they are clearly separate issues.
>
>> I can compile a list
>> with asm-generic files that can be used to replace the architecture
>> specific files, so the arch maintainers can decide on their own
>> whether to clean their own stuff up or not.
>>...
>
>We need either all architectures changed or none at all - we do need the
>arch headers to become more similar, not more different.
>
>And this is why we need an agreement _before_ an asm-generic header gets
>added, not after it.
I moved some headers to asm-generic how Arnd recommended to me. The same style
is applied to of files. If you think that is good idea to start with new topic what is necessary to move
to asm-generic, I agree. For me is not hard to move these files back to asm-microblaze and then
someone can do big patch among all archs.
If you want to managed, please open new discussion about and cc me.
Michal
>
> We need either all architectures changed or none at all - we do need the
> arch headers to become more similar, not more different.
>
> And this is why we need an agreement _before_ an asm-generic header gets
> added, not after it.
We already have the agreement..
Files which are equal among archs should be in asm-generic.
And there is simply no gain in adding files for an arch when can put
them in asm-generic.
When they are in asm-generic than we can fix the other archs one-by-one.
Sam
On Thu, Jun 26, 2008 at 02:29:30PM +0200, [email protected] wrote:
> +config HZ
> + int
> + default 100
> +
Consider using kernel/Kconfig.hz instead.
> +config DEFCONFIG_LIST
> + string
> + default "arch/$ARCH/defconfig"
> +
init/Kconfig already has quite a few reasonable defaults for this,
including the case you specify. You can kill this off.
> +source "init/Kconfig"
> +
> +source "arch/microblaze/platform/Kconfig.platform"
> +
> +menu "Processor type and features"
> +
> +config PREEMPT
> + bool "Preemptible Kernel"
> + help
> + This option reduces the latency of the kernel when reacting to
> + real-time or interactive events by allowing a low priority process to
> + be preempted even if it is in kernel mode executing a system call.
> + This allows applications to run more reliably even when the system is
> + under load.
> +
> + Say Y here if you are building a kernel for a desktop, embedded
> + or real-time system. Say N if you are unsure.
> +
kernel/Kconfig.preempt
> +config LARGE_ALLOCS
> + bool "Allow allocating large blocks (> 1MB) of memory"
> + help
> + Allow the slab memory allocator to keep chains for very large
> + memory sizes - up to 32MB. You may need this if your system has
> + a lot of RAM, and you need to able to allocate very large
> + contiguous chunks. If unsure, say N.
> +
Legacy bits, not used anywhere anymore.
> +comment "Boot options"
> +
> +config CMDLINE
> + string "Default kernel command string"
> + default ""
> + help
> + On some architectures there is currently no way for the boot loader
> + to pass arguments to the kernel. For these architectures, you should
> + supply some command-line options at build time by entering them
> + here.
> +
> +config CMDLINE_FORCE
> + bool "Force default kernel command string"
> + help
> + Set this to have arguments from the default kernel command string
> + override those passed by the boot loader.
> +
Consider CMDLINE_BOOL/CMDLINE for consistency with other architectures.
It doesn't make much sense to expose CMDLINE if you don't intend to use
it. Especially when people wonder why their CMDLINE changes are being
clobbered by the boot loader.
On Thu, Jun 26, 2008 at 02:29:53PM +0200, [email protected] wrote:
> +#include <linux/stddef.h>
> +#include <linux/sched.h>
> +#include <linux/kernel_stat.h>
> +#include <linux/ptrace.h>
> +#include <linux/hardirq.h>
> +#include <linux/thread_info.h>
> +
> +#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))
> +#define BLANK() asm volatile("\n->" : :)
> +
There are generic definitions for these these days, include linux/kbuild.h.
On Thu, Jun 26, 2008 at 02:29:54PM +0200, [email protected] wrote:
> +void (*pm_power_off)(void) = NULL;
> +EXPORT_SYMBOL(pm_power_off);
> +
> +void cpu_idle(void)
> +{
> + set_thread_flag(TIF_POLLING_NRFLAG);
> +
> + while (1) {
> + while (!need_resched())
> + cpu_relax();
> +
> + preempt_enable_no_resched();
> + schedule();
> + preempt_disable();
> + }
> +}
> +
A couple things to note here. You have a pm_power_off, but no pm_idle.
You set TIF_POLLING_NRFLAG but don't have any explicit clearing and
resetting of it if the CPU is sleeping. In the cpu_relax() case this is
ok, but if you have a cpu_sleep() you will want to use in the SMP case,
you will need to handle it explicitly.
Beyond that, you may also want to stub in the
tick_nohz_stop_sched_tick()/tick_nohz_restart_sched_tick() calls, then
when you implement the generic clockevents you will already have the
tickless bits in place.
check_pgt_cache() is also helpful here for quicklist trimming, though you
may not care if you never plan to have an MMU.
You can look at arch/sh/kernel/process_32.c for examples.
On Thu, Jun 26, 2008 at 02:29:57PM +0200, [email protected] wrote:
> +long arch_ptrace(struct task_struct *child, long request, long addr, long data)
> +{
> + int rval;
> +
> + switch (request) {
> + unsigned long val, copied;
> +
> + case PTRACE_PEEKTEXT: /* read word at location addr. */
> + case PTRACE_PEEKDATA:
> + pr_debug("PEEKTEXT/PEEKDATA at %08lX\n", addr);
> + copied = access_process_vm(child, addr, &val, sizeof(val), 0);
> + rval = -EIO;
> + if (copied != sizeof(val))
> + break;
> + rval = put_user(val, (unsigned long *)data);
> + goto out;
> +
> + case PTRACE_POKETEXT: /* write the word at location addr. */
> + case PTRACE_POKEDATA:
> + pr_debug("POKETEXT/POKEDATA to %08lX\n", addr);
> + rval = 0;
> + if (access_process_vm(child, addr, &data, sizeof(data), 1)
> + == sizeof(data))
> + break;
> + rval = -EIO;
> + goto out;
> +
You can use generic_ptrace_peekdata()/generic_ptrace_pokedata() for
these. Or kill them off and let ptrace_request() handle it.
> + /* Continue and stop at next (return from) syscall */
> + case PTRACE_SYSCALL:
> + pr_debug("PTRACE_SYSCALL\n");
> + case PTRACE_SINGLESTEP:
> + pr_debug("PTRACE_SINGLESTEP\n");
> + /* Restart after a signal. */
> + case PTRACE_CONT:
> + pr_debug("PTRACE_CONT\n");
> + rval = -EIO;
> + if (!valid_signal(data))
> + break;
> +
> + if (request == PTRACE_SYSCALL)
> + set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
> + else
> + clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
> +
> + child->exit_code = data;
> + pr_debug("wakeup_process\n");
> + wake_up_process(child);
> + rval = 0;
> + break;
> +
This is a reimplementation of ptrace_resume(), you can kill all of these
off as well, as they are also handled generically these days.
> + /*
> + * make the child exit. Best I can do is send it a sigkill.
> + * perhaps it should be put in the status that it wants to
> + * exit.
> + */
> + case PTRACE_KILL:
> + pr_debug("PTRACE_KILL\n");
> + rval = 0;
> + if (child->exit_state == EXIT_ZOMBIE) /* already dead */
> + break;
> + child->exit_code = SIGKILL;
> + wake_up_process(child);
> + break;
> +
> + case PTRACE_DETACH: /* detach a process that was attached. */
> + pr_debug("PTRACE_DETACH\n");
> + rval = ptrace_detach(child, data);
> + break;
> +
> + default:
> + rval = -EIO;
> + goto out;
> + }
> + out:
> + return rval;
> +}
> +
Or rather, they would be, if you defaulted to ptrace_request() for the
unhandled cases.
On Thu, Jun 26, 2008 at 02:29:58PM +0200, [email protected] wrote:
> +static int kstack_depth_to_print = 24;
> +
x86 has a sysctl for this. It may be worth making this non-static and
generalizing the ifdef case. Plenty of other architectures could benefit
from this also.
> +void show_trace(struct task_struct *task, unsigned long *stack)
> +{
> + unsigned long addr;
> +
> + if (!stack)
> + stack = (unsigned long *)&stack;
> +
> + printk(KERN_INFO "Call Trace: ");
> +#ifdef CONFIG_KALLSYMS
> + printk(KERN_INFO "\n");
> +#endif
> + while (!kstack_end(stack)) {
> + addr = *stack++;
> + if (__kernel_text_address(addr)) {
> + printk(KERN_INFO "[<%08lx>] ", addr);
> + print_symbol("%s\n", addr);
Use print_ip_sym() here for future-proofing.
> + }
> + }
> + printk(KERN_INFO "\n");
And here you can:
if (!tsk)
tsk = current;
debug_show_held_locks(tsk);
> +}
> +
for when you get around to implementing lockdep.
On Thu, Jun 26, 2008 at 02:29:59PM +0200, [email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> 0 files changed, 0 insertions(+), 0 deletions(-)
> create mode 100644 include/asm-microblaze/a.out.h
>
a.out is going away for the users that don't care, so you may wish to
make sure all of your a.out references are also gone so you don't have to
patch this a second time.
On Thu, Jun 26, 2008 at 02:30:28PM +0200, [email protected] wrote:
> +#define __NR_semtimedop 325
> +#define __NR_timerfd_settime 326
> +#define __NR_timerfd_gettime 327
> +
> +#ifdef __KERNEL__
> +
> +#define __NR_syscalls 327
> +
Off-by-1 on __NR_syscalls, this should be 328.
On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> arch/microblaze/platform/generic/system.dts | 300 +++++++++++++++++++++++++++
> 1 files changed, 300 insertions(+), 0 deletions(-)
> create mode 100644 arch/microblaze/platform/generic/system.dts
Since this is a generated file, and entirely bitstream specific, does
it make sense to include it in the kernel tree? If it does, then is
it produced from one of the Xilinx reference designs? Can you add
documentation to the header that specifies exactly which design
version this .dts is for?
>
> diff --git a/arch/microblaze/platform/generic/system.dts b/arch/microblaze/platform/generic/system.dts
> new file mode 100644
> index 0000000..724a037
> --- /dev/null
> +++ b/arch/microblaze/platform/generic/system.dts
> @@ -0,0 +1,300 @@
> +/*
> + * (C) Copyright 2007-2008 Xilinx, Inc.
> + * (C) Copyright 2007-2008 Michal Simek
> + *
> + * Michal SIMEK <[email protected]>
If this is a generated file, then is this copyright notice even appropriate?
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
I don't this whole large legal block is necessary. Unless specified
otherwise in the comment block, I believe GPL licencing is pretty much
assumed and so the above three copyrights should be redundant.
Cheers,
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
> +static inline unsigned int
> +csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned
> short len,
> + unsigned short proto, unsigned int sum)
> +{
> + __asm__("add %0, %4, %1\n\t"
> + "addc %0, %4, %2\n\t"
> + "addc %0, %4, %3\n\t"
> + "addc %0, %4, r0\n\t"
> + : "=d" (sum)
> + : "d" (saddr), "d" (daddr), "d" (len + proto),
> + "0"(sum));
"sum" should use an earlyclobber, i.e. "=&d"(sum) , since some
inputs are used after %0 is first written to.
Also, you can use "+" instead of "=" to say the argument is both
input and output, and get rid of %4, if you like.
Segher
On Sat, Jun 28, 2008 at 3:49 PM, Grant Likely <[email protected]> wrote:
> On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
>> From: Michal Simek <[email protected]>
>> arch/microblaze/platform/generic/system.dts | 300 +++++++++++++++++++++++++++
> Since this is a generated file, and entirely bitstream specific, does
> it make sense to include it in the kernel tree? If it does, then is
> it produced from one of the Xilinx reference designs? Can you add
> documentation to the header that specifies exactly which design
> version this .dts is for?
I think there's value in having a generic DTS as an example or
template, even if it doesn't correspond to any specific machine.
Agreed a comment block explaining this is valuable.
I'd almost oppose any attempt to include a standard DTS for things
like ML401 boards etc - they are just misleading. Unless we do MD5
hashes on MHS files, and use them as the filenames, any attempt to
define a standard platform will just fail and confuse people. Better
to show them how to generate the DTS for their system.
>> +/*
>> + * (C) Copyright 2007-2008 Xilinx, Inc.
>> + * (C) Copyright 2007-2008 Michal Simek
>> + *
>> + * Michal SIMEK <[email protected]>
>
> If this is a generated file, then is this copyright notice even appropriate?
I agree. I think Michal is just copying Xilinx's habit of putting
copyright headers in generated files, and it's one that we should stop
now.
Regards,
John
Hi Steve,
> In my opionion, we should only include dts files for reference designs, and
> it must be documented how to get the design that the dts corresponds to.
I'm not sure you (or Xilinx) are quite ready for the pain this implies
- have you tried browsing reference designs on Xilinx.com recently?
It's a total mishmash of tool versions, boards, you name it. If
Xilinx is ready to declare a gold standard "ML401" design, and commit
to maintaining it tool version after tool version, lots of people will
be very happy, but I don't see it just yet!
I'm not having a go at you here, just questioning the notion that
there is really any such thing as a persistent 'reference design' for
these platforms. These are not physical boards that get manufactured
and persist as real objects.
> MD5 hashing might be one way to prevent people from getting the dts file
> wrong, however without some way of checking it automatically, I don't think
> anyone will have the patience to checksum the design they have (even worse,
> with whitespace changes, the md5 sum will change, so this is pretty fragile.
Actually I was only joking about the md5 hashing - just to prove my point :)
> Having a device tree in the kernel for documentation *shouldn't* be
> necessary,
Well, yes and no. A vanilla DTS that shows what a valid one might
look like - "oh, here's where I declare my main memory parameters,
..." has some value IMO.
> since noone should ever write their dts by hand. (right?)
I'm not certain you can guarantee that.
> Hence, I'd prefer to not put the dts file in the kernel at all, and but to
> automatically generate the dts and store it in the blockram of the design.
> This inextricably associates the dts with the design.
Whether the DTS lives in block ram or is pulled over the net by uboot
or whatever is not our call to make in the kernel - that's a
deployment issue.
> As for the copyright, I haven't been able to find much information on
> whether or not generated files are even copyrightable. One might argue that
> they
> don't have sufficient 'creative value' to be copyrightable. Or arguably,
> they are as copyrightable by the generator author as by the author or the
> .mhs file.
The DTS is a mechanical translation from one file format to another
(more or less). Auto-inserting a copyright Xilinx (or anyone else) in
there would be unenforceable, and therefore should probably just go
away.
How would you feel if the FSF claimed copyright over object code
derived from your source files simply because you ran them through
gcc? :) I believe there's a special clause in the GCC license to
explicitly cover this kind of situation.
Cheers,
John
Hi John, Steve and others,
in generic platform will be generic DTS which I sent in first versions.
This DTS will be for simple platform. There is not copyright.
FDT generator add copyright notice on the top of file. I added it when I start
to program this BSP. Xilinx only add their copyright line which is fine.
We can talk how big can be this copyright but I am convinced that will be
part of commented code forever because there is placed important information
which EDK version this file generated and which version of FDT this file generate.
We can talk about showing license there but I think this is out of topic now because there
won't be any license in first microblaze pack.
Michal
> Since this is a generated file, and entirely bitstream specific, does
> it make sense to include it in the kernel tree? If it does, then is
> it produced from one of the Xilinx reference designs? Can you add
> documentation to the header that specifies exactly which design
> version this .dts is for?
I think there's value in having a generic DTS as an example or
template, even if it doesn't correspond to any specific machine.
Agreed a comment block explaining this is valuable.
I'd almost oppose any attempt to include a standard DTS for things
like ML401 boards etc - they are just misleading. Unless we do MD5
hashes on MHS files, and use them as the filenames, any attempt to
define a standard platform will just fail and confuse people. Better
to show them how to generate the DTS for their system.
>> +/*
>> + * (C) Copyright 2007-2008 Xilinx, Inc.
>> + * (C) Copyright 2007-2008 Michal Simek
>> + *
>> + * Michal SIMEK <[email protected]>
>
> If this is a generated file, then is this copyright notice even appropriate?
I agree. I think Michal is just copying Xilinx's habit of putting
copyright headers in generated files, and it's one that we should stop
now.
Regards,
John
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Hi Segher,
you find bug because there is microblaze asm code in generic folder.
Big thanks. I'll fix it and I'll look at parameters too.
Michal
> +static inline unsigned int
> +csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned
> short len,
> + unsigned short proto, unsigned int sum)
> +{
> + __asm__("add %0, %4, %1\n\t"
> + "addc %0, %4, %2\n\t"
> + "addc %0, %4, %3\n\t"
> + "addc %0, %4, r0\n\t"
> + : "=d" (sum)
> + : "d" (saddr), "d" (daddr), "d" (len + proto),
> + "0"(sum));
"sum" should use an earlyclobber, i.e. "=&d"(sum) , since some
inputs are used after %0 is first written to.
Also, you can use "+" instead of "=" to say the argument is both
input and output, and get rid of %4, if you like.
Segher
Hi Steve, John a others,
>In my opionion, we should only include dts files for reference designs, and it
>must be documented how to get the design that the dts corresponds to.
>MD5 hashing might be one way to prevent people from getting the dts file wrong,
>however without some way of checking it automatically, I don't think
>anyone will have the patience to checksum the design they have (even worse, with
>whitespace changes, the md5 sum will change, so this is pretty fragile.
What is reference design? Is reference design design from BSB or from Xilinx page?
I don't want to add dts files to kernel which has relation with reference design. I added platform folder
with generic one for preparing for others distribution which can add their supported board. I don't want
to added useless files to kernel. For non FPGA board make sense to me, they can't change everything.
I see the way that I can add ref design to my pages with correspond DTS file with some MD5 sums
but I haven't seen to add for every reference board dts file. This is not way. I see that people will write to us
that they use board ml401 and they set ml401 in menuconfig but the kernel doesn't work. IMHO, if no board specific options
are not there, people will be looking for what is the next step. And If they want to use platform option which is there, they can add their own platform to his kernel.
>Having a device tree in the kernel for documentation *shouldn't* be necessary,
>since noone should ever write their dts by hand. (right?)
>Hence, I'd prefer to not put the dts file in the kernel at all, and but to
>automatically generate the dts and store it in the blockram of the design.
>This inextricably associates the dts with the design.
This should be one choice to add DTB to bram with design but this could be only one choice
not in general. I can't imagine for example board where is reset logic on own IP which has specific
reason. Developers will be overwrite their DTS a lot.
I think this is the right time to stop discussion in this thread and annoying others with FPGA specific discuss. We can continue in specific thread.
>As for the copyright, I haven't been able to find much information on whether or
>not generated files are even copyrightable. One might argue that they
>don't have sufficient 'creative value' to be copyrightable. Or arguably, they
>are as copyrightable by the generator author as by the author or the .mhs file.
>I admit in this case, I've followed the safe route by claiming a copyright,
>which at least at Xilinx has significant precedent.
This part can be discuss only on microblaze mailing list and has no relation with first pull to mainline kernel.
As I wrote in previous email copyright on generic DTS will not be there.
Michal
>Steve
-----Original Message-----
From: John Williams [mailto:[email protected]]
Sent: Sun 6/29/2008 5:02 PM
To: [email protected]
Cc: [email protected]; [email protected]; [email protected];
[email protected]; Stephen Neuendorffer; John Linn; [email protected];
[email protected]; [email protected]; [email protected];
[email protected]; [email protected]; [email protected];
[email protected]; Michal Simek
Subject: Re: [PATCH 12/60] microblaze_v4: Generic dts file for platforms
On Sat, Jun 28, 2008 at 3:49 PM, Grant Likely <[email protected]>
wrote:
> On Thu, Jun 26, 2008 at 5:29 AM, <[email protected]> wrote:
>> From: Michal Simek <[email protected]>
>> arch/microblaze/platform/generic/system.dts | 300
+++++++++++++++++++++++++++
> Since this is a generated file, and entirely bitstream specific, does
> it make sense to include it in the kernel tree? If it does, then is
> it produced from one of the Xilinx reference designs? Can you add
> documentation to the header that specifies exactly which design
> version this .dts is for?
I think there's value in having a generic DTS as an example or
template, even if it doesn't correspond to any specific machine.
Agreed a comment block explaining this is valuable.
I'd almost oppose any attempt to include a standard DTS for things
like ML401 boards etc - they are just misleading. Unless we do MD5
hashes on MHS files, and use them as the filenames, any attempt to
define a standard platform will just fail and confuse people. Better
to show them how to generate the DTS for their system.
>> +/*
>> + * (C) Copyright 2007-2008 Xilinx, Inc.
>> + * (C) Copyright 2007-2008 Michal Simek
>> + *
>> + * Michal SIMEK <[email protected]>
>
> If this is a generated file, then is this copyright notice even appropriate?
I agree. I think Michal is just copying Xilinx's habit of putting
copyright headers in generated files, and it's one that we should stop
now.
Regards,
John
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Delete this email message and any attachments immediately.
> you find bug because there is microblaze asm code in generic folder.
No, I found it because I was reading the code, I didn't even notice
this was in asm-generic :-)
> Big thanks. I'll fix it and I'll look at parameters too.
Thanks.
Segher
> As for the copyright, I haven't been able to find much information on
> whether or not generated files are even copyrightable. One might
> argue that they
> don't have sufficient 'creative value' to be copyrightable. Or
> arguably, they are as copyrightable by the generator author as by the
> author or the .mhs file.
> I admit in this case, I've followed the safe route by claiming a
> copyright, which at least at Xilinx has significant precedent.
Also, thinking about your idea of sticking bits in BRAM etc...
what would be nice would be the ability to "merge" trees. We've been
talking about that multiple times, it would be useful at several levels:
- We could provide pre-made DTs for known CPUs (ie, 440GP, 440GX,
405EX, ...)
- Boards can then include that, and then "override" some properties
(clocks, PHY wiring, ...)
- That could be done at the binary level too so that the BRAM contains
on "overlay" on top of the base ref. platform device-tree that comes
with the kernel for example.
This is slightly different between doing that in the .dts source via
some kind of #include vs. doing that by merging blobs but we could make
it be essentially be the same internally: The #include generates a blob
that is then "merged in".
Just random thoughts...
Ben.
Doing this at the binary level would be nice, but I see enough problems
just doing it at the source level and at least for my purposes, doing it
on a dtb would be overkill, I think.
The main difficulty remains how to deal with cross references between
nodes in a reasonable way where the references cross from one fragment
to another.
Steve
> -----Original Message-----
> From: Benjamin Herrenschmidt [mailto:[email protected]]
> Sent: Monday, June 30, 2008 11:22 PM
> To: Stephen Neuendorffer
> Cc: John Williams; [email protected];
[email protected]; Michal Simek;
> [email protected]; [email protected]; [email protected];
[email protected]; linux-
> [email protected]; [email protected];
[email protected]; [email protected]; John Linn;
> [email protected]; [email protected]; [email protected]
> Subject: RE: [PATCH 12/60] microblaze_v4: Generic dts file for
platforms
>
>
> > As for the copyright, I haven't been able to find much information
on
> > whether or not generated files are even copyrightable. One might
> > argue that they
> > don't have sufficient 'creative value' to be copyrightable. Or
> > arguably, they are as copyrightable by the generator author as by
the
> > author or the .mhs file.
> > I admit in this case, I've followed the safe route by claiming a
> > copyright, which at least at Xilinx has significant precedent.
>
> Also, thinking about your idea of sticking bits in BRAM etc...
>
> what would be nice would be the ability to "merge" trees. We've been
> talking about that multiple times, it would be useful at several
levels:
>
> - We could provide pre-made DTs for known CPUs (ie, 440GP, 440GX,
> 405EX, ...)
> - Boards can then include that, and then "override" some properties
> (clocks, PHY wiring, ...)
> - That could be done at the binary level too so that the BRAM
contains
> on "overlay" on top of the base ref. platform device-tree that comes
> with the kernel for example.
>
> This is slightly different between doing that in the .dts source via
> some kind of #include vs. doing that by merging blobs but we could
make
> it be essentially be the same internally: The #include generates a
blob
> that is then "merged in".
>
> Just random thoughts...
>
> Ben.
>
>
This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
On Thu, Jun 26, 2008 at 02:29:56PM +0200, [email protected] wrote:
> From: Michal Simek <[email protected]>
>
>
> Signed-off-by: Michal Simek <[email protected]>
> ---
> include/asm-microblaze/kvm.h | 1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
> create mode 100644 include/asm-microblaze/kvm.h
>
> diff --git a/include/asm-microblaze/kvm.h b/include/asm-microblaze/kvm.h
> new file mode 100644
> index 0000000..01c5e79
> --- /dev/null
> +++ b/include/asm-microblaze/kvm.h
> @@ -0,0 +1 @@
> +/* Microblaze does not support KVM */
There's a patch pending for 2.6.27 that will remove the requirement for
this empty header.
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Tue, 2008-07-01 at 08:58 -0700, Stephen Neuendorffer wrote:
> Doing this at the binary level would be nice, but I see enough problems
> just doing it at the source level and at least for my purposes, doing it
> on a dtb would be overkill, I think.
>
> The main difficulty remains how to deal with cross references between
> nodes in a reasonable way where the references cross from one fragment
> to another.
I would have those done in the toplevel .dts
You can always override the property with the reference....
Ie. you #include your CPU or your SOC for example, and then override
some property to point to something else using the override mechanism I
mentioned.
Ben.
Hi Arnd,
> On Thursday 26 June 2008, [email protected] wrote:
>
>> +#include <linux/autoconf.h>
>
> You should never need to include linux/autoconf.h anywhere,
> just remove this.
Remove from all files
>> +#include <linux/init.h>
>> +#include <linux/mm.h>
>> +#include "../../../mm/internal.h"
>
> Why do you need to include the internal.h file here?
> If you have a good reason to do it, you should probably
> add the symbol you need to a global header file.
There was reason for doing it in older version. With current
version work without internal.h.
Thank for comment,
Michal
> Arnd <><
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