Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752980AbaDRMm7 (ORCPT ); Fri, 18 Apr 2014 08:42:59 -0400 Received: from mail-bn1bbn0108.outbound.protection.outlook.com ([157.56.111.108]:45286 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751185AbaDRMmq (ORCPT ); Fri, 18 Apr 2014 08:42:46 -0400 From: Ley Foon Tan To: , , CC: Ley Foon Tan , , Subject: [PATCH 01/28] nios2: Build infrastructure Date: Fri, 18 Apr 2014 20:26:48 +0800 Message-ID: <1397824031-4892-2-git-send-email-lftan@altera.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397824031-4892-1-git-send-email-lftan@altera.com> References: <1397824031-4892-1-git-send-email-lftan@altera.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:66.35.236.232;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019001)(6009001)(458001)(189002)(199002)(22564002)(575784001)(97736001)(93916002)(46102001)(86362001)(50466002)(4396001)(80022001)(76176999)(80976001)(62966002)(81342001)(50226001)(81542001)(48376002)(50986999)(2009001)(99396002)(87286001)(77156001)(89996001)(83072002)(31966008)(85852003)(87936001)(88136002)(36756003)(77982001)(84676001)(42186004)(76482001)(47776003)(19580395003)(20776003)(19580405001)(44976005)(2201001)(92726001)(83322001)(16796002)(6806004)(74502001)(92566001)(74662001);DIR:OUT;SFP:1102;SCL:1;SRVR:BL2FFO11HUB014;H:SJ-ITEXEDGE02.altera.priv.altera.com;FPR:E263FD56.A0FA5D8E.6ECBA587.463A7843.20DD2;MLV:sfv;PTR:InfoDomainNonexistent;MX:1;A:1;LANG:en; X-OriginatorOrg: altera.onmicrosoft.com X-Forefront-PRVS: 018577E36E Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds Makefile and Kconfig files required for building a nios2 kernel. Signed-off-by: Ley Foon Tan --- arch/nios2/Kconfig | 213 +++++++++++++++++++++++++++++++++++ arch/nios2/Kconfig.debug | 17 +++ arch/nios2/Makefile | 78 +++++++++++++ arch/nios2/boot/Makefile | 51 +++++++++ arch/nios2/configs/3c120_defconfig | 77 +++++++++++++ arch/nios2/include/asm/Kbuild | 66 +++++++++++ arch/nios2/include/uapi/asm/Kbuild | 14 +++ arch/nios2/kernel/Makefile | 14 +++ arch/nios2/kernel/nios2_ksyms.c | 35 ++++++ arch/nios2/kernel/vmlinux.lds.S | 75 ++++++++++++ arch/nios2/lib/Makefile | 1 + arch/nios2/mm/Makefile | 12 ++ arch/nios2/platform/Kconfig.platform | 129 +++++++++++++++++++++ arch/nios2/platform/Makefile | 1 + 14 files changed, 783 insertions(+) create mode 100644 arch/nios2/Kconfig create mode 100644 arch/nios2/Kconfig.debug create mode 100644 arch/nios2/Makefile create mode 100644 arch/nios2/boot/Makefile create mode 100644 arch/nios2/configs/3c120_defconfig create mode 100644 arch/nios2/include/asm/Kbuild create mode 100644 arch/nios2/include/uapi/asm/Kbuild create mode 100644 arch/nios2/kernel/Makefile create mode 100644 arch/nios2/kernel/nios2_ksyms.c create mode 100644 arch/nios2/kernel/vmlinux.lds.S create mode 100644 arch/nios2/lib/Makefile create mode 100644 arch/nios2/mm/Makefile create mode 100644 arch/nios2/platform/Kconfig.platform create mode 100644 arch/nios2/platform/Makefile diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig new file mode 100644 index 0000000..2bd0d0d7160f31a5c5890cf8a059b9f53378be6e --- /dev/null +++ b/arch/nios2/Kconfig @@ -0,0 +1,213 @@ +config NIOS2 + def_bool y + select OF + select OF_EARLY_FLATTREE + select USB_ARCH_HAS_HCD if USB_SUPPORT + select ARCH_WANT_OPTIONAL_GPIOLIB + select GENERIC_IRQ_PROBE + select GENERIC_IRQ_SHOW + select GENERIC_CPU_DEVICES + select GENERIC_ATOMIC64 + select MODULES_USE_ELF_RELA + select IRQ_DOMAIN + select SOC_BUS + select CLKSRC_OF + +config GENERIC_CSUM + def_bool y + +config GENERIC_FIND_NEXT_BIT + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_CALIBRATE_DELAY + def_bool y + + +config NO_IOPORT + def_bool y + +config HAS_DMA + def_bool y + +config ZONE_DMA + def_bool y + +config FPU + def_bool n + +config SWAP + def_bool n + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config TRACE_IRQFLAGS_SUPPORT + def_bool n + +source "init/Kconfig" + +menu "Kernel features" + +source "kernel/Kconfig.preempt" + +source "kernel/Kconfig.freezer" + +source "kernel/Kconfig.hz" + +source "mm/Kconfig" + +config FORCE_MAX_ZONEORDER + int "Maximum zone order" + range 9 20 + default "11" + help + The kernel memory allocator divides physically contiguous memory + blocks into "zones", where each zone is a power of two number of + pages. This option selects the largest power of two that the kernel + keeps in the memory allocator. If you need to allocate very large + blocks of physically contiguous memory, then you may need to + increase this value. + + This config option is actually maximum order plus one. For example, + a value of 11 means that the largest free memory block is 2^10 pages. + +endmenu + +source "arch/nios2/platform/Kconfig.platform" + +menu "Processor type and features" + +config MMU + def_bool y + +config ALIGNMENT_TRAP + bool "Catch alignment trap" + default y + help + Nios II CPUs cannot fetch/store data which is not bus aligned, + i.e., a 2 or 4 byte fetch must start at an address divisible by + 2 or 4. Any non-aligned load/store instructions will be trapped and + emulated in software if you say Y here, which has a performance + impact. + +comment "Boot options" + +config CMDLINE_BOOL + bool "Default bootloader kernel arguments" + default y + +config CMDLINE + string "Default kernel command string" + default "" + depends on CMDLINE_BOOL + help + On some platforms, there is currently no way for the boot loader to + pass arguments to the kernel. For these platforms, you can supply + some command-line options at build time by entering them here. In + other cases you can specify kernel args so that you don't have + to set them up in board prom initialization routines. + +config CMDLINE_FORCE + bool "Force default kernel command string" + depends on CMDLINE_BOOL + help + Set this to have arguments from the default kernel command string + override those passed by the boot loader. + +config CMDLINE_IGNORE_DTB + bool "Ignore kernel command string from DTB" + depends on !CMDLINE_FORCE + default y + help + Set this to ignore the bootargs property from the devicetree's + chosen node and fall back to CMDLINE if nothing is passed. + +config PASS_CMDLINE + bool "Passed kernel command line from u-boot" + default n + help + Use bootargs env variable from u-boot for kernel command line. + will override "Default kernel command string". + Say N if you are unsure. + +config BOOT_LINK_OFFSET + hex "Link address offset for booting" + default "0x00500000" + help + This option allows you to set the link address offset of the zImage. + This can be useful if you are on a board which has a small amount of + memory. + +endmenu + +menu "Advanced setup" + +config ADVANCED_OPTIONS + bool "Prompt for advanced kernel configuration options" + help + +comment "Default settings for advanced configuration options are used" + depends on !ADVANCED_OPTIONS + +config KERNEL_MMU_REGION_BASE_BOOL + bool "Set custom kernel MMU region base address" + depends on ADVANCED_OPTIONS + help + This option allows you to set the virtual address of the kernel MMU region. + + Say N here unless you know what you are doing. + +config KERNEL_MMU_REGION_BASE + hex "Virtual base address of the kernel MMU region " if KERNEL_MMU_REGION_BASE_BOOL + default "0x80000000" + help + This option allows you to set the virtual base address of the kernel MMU region. + +config KERNEL_REGION_BASE_BOOL + bool "Set custom kernel region base address" + depends on ADVANCED_OPTIONS + help + This option allows you to set the virtual address of the kernel region. + + Say N here unless you know what you are doing. + +config KERNEL_REGION_BASE + hex "Virtual base address of the kernel region " if KERNEL_REGION_BASE_BOOL + default "0xc0000000" + +config IO_REGION_BASE_BOOL + bool "Set custom I/O region base address" + depends on ADVANCED_OPTIONS + help + This option allows you to set the virtual address of the I/O region. + + Say N here unless you know what you are doing. + +config IO_REGION_BASE + hex "Virtual base address of the I/O region " if IO_REGION_BASE_BOOL + default "0xe0000000" + +endmenu + +menu "Executable file formats" + +source "fs/Kconfig.binfmt" + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "arch/nios2/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" diff --git a/arch/nios2/Kconfig.debug b/arch/nios2/Kconfig.debug new file mode 100644 index 0000000..8d4e6bacd997b3f687d1262631830a3c73c1f0f6 --- /dev/null +++ b/arch/nios2/Kconfig.debug @@ -0,0 +1,17 @@ +menu "Kernel hacking" + +config TRACE_IRQFLAGS_SUPPORT + def_bool y + +source "lib/Kconfig.debug" + +config DEBUG_STACK_USAGE + bool "Enable stack utilization instrumentation" + depends on DEBUG_KERNEL + help + Enables the display of the minimum amount of free stack which each + task has ever had available in the sysrq-T and sysrq-P debug output. + + This option will slow down process creation somewhat. + +endmenu diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile new file mode 100644 index 0000000..89840a5763797a26bcbb723d32db64826024689c --- /dev/null +++ b/arch/nios2/Makefile @@ -0,0 +1,78 @@ +# +# 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) 2013 Altera Corporation +# Copyright (C) 1994, 95, 96, 2003 by Wind River Systems +# Written by Fredrik Markstrom +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. Remember to do have actions +# for "archclean" cleaning up for this architecture. +# +# Nios2 port by Wind River Systems Inc trough: +# fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com + +UTS_SYSNAME = Linux + +export MMU + +cflags-y := +LDFLAGS := +LDFLAGS_vmlinux := + +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) + +KBUILD_AFLAGS += $(cflags-y) +KBUILD_CFLAGS += -pipe -D__linux__ -D__ELF__ $(cflags-y) +KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_MUL_SUPPORT),-mhw-mul,-mno-hw-mul) +KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_MULX_SUPPORT),-mhw-mulx,-mno-hw-mulx) +KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_DIV_SUPPORT),-mhw-div,-mno-hw-div) +KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_FPU_SUPPORT),-mcustom-fpu-cfg=60-1,) + +KBUILD_CFLAGS += -fno-optimize-sibling-calls +KBUILD_CFLAGS += -DUTS_SYSNAME=\"$(UTS_SYSNAME)\" +KBUILD_CFLAGS += -fno-builtin +KBUILD_CFLAGS += -G 0 + +head-y := arch/nios2/kernel/head.o +libs-y += arch/nios2/lib/ $(LIBGCC) +core-y += arch/nios2/kernel/ arch/nios2/mm/ +core-y += arch/nios2/platform/ + +INSTALL_PATH ?= /tftpboot +boot := arch/$(ARCH)/boot +BOOT_TARGETS = vmImage zImage +PHONY += $(BOOT_TARGETS) install +KBUILD_IMAGE := $(boot)/vmImage + +ifneq ($(CONFIG_DTB_SOURCE),"") + core-y += $(boot)/ +endif + +all: vmImage + +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + +%.dtb: + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +dtbs: + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +$(BOOT_TARGETS): vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +install: + $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install + +define archhelp + echo '* vmImage - Kernel-only image for U-Boot (arch/$(ARCH)/boot/vmImage)' + echo ' install - Install kernel using' + echo ' (your) ~/bin/$(CROSS_COMPILE)installkernel or' + echo ' (distribution) PATH: $(CROSS_COMPILE)installkernel or' + echo ' install to $$(INSTALL_PATH)' + echo ' dtbs - Build device tree blobs for enabled boards' +endef diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile new file mode 100644 index 0000000..00aef5e266f9cc629f126445535f9aae6ca8962f --- /dev/null +++ b/arch/nios2/boot/Makefile @@ -0,0 +1,51 @@ +# +# arch/nios2/boot/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# + +UIMAGE_LOADADDR = $(shell $(NM) vmlinux | awk '$$NF == "_stext" {print $$1}') +UIMAGE_ENTRYADDR = $(shell $(NM) vmlinux | awk '$$NF == "_start" {print $$1}') +UIMAGE_COMPRESSION = gzip + +OBJCOPYFLAGS_vmlinux.bin := -O binary +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE + $(call if_changed,gzip) + +$(obj)/vmImage: $(obj)/vmlinux.gz + $(call if_changed,uimage) + @$(kecho) 'Kernel: $@ is ready' + +# Rule to build device tree blobs +DTB_SRC := $(subst ",,$(CONFIG_DTB_SOURCE)) + +# Make sure the generated dtb gets removed during clean +extra-$(CONFIG_DTB_SOURCE_BOOL) += system.dtb + +$(obj)/system.dtb: $(DTB_SRC) FORCE + $(call cmd,dtc) + +# Ensure system.dtb exists +$(obj)/linked_dtb.o: $(obj)/system.dtb + +#ifneq ($(CONFIG_DTB_SOURCE),"") +obj-$(CONFIG_DTB_SOURCE_BOOL) += linked_dtb.o +#endif + +targets += $(dtb-y) + +# Rule to build device tree blobs with make command +$(obj)/%.dtb: $(src)/dts/%.dts FORCE + $(call if_changed_dep,dtc) + +$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y)) + +clean-files := *.dtb + +install: + sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)" diff --git a/arch/nios2/configs/3c120_defconfig b/arch/nios2/configs/3c120_defconfig new file mode 100644 index 0000000..0147082994473779eeb138e2cfd0a17be73242c4 --- /dev/null +++ b/arch/nios2/configs/3c120_defconfig @@ -0,0 +1,77 @@ +CONFIG_SYSVIPC=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_LOG_BUF_SHIFT=14 +CONFIG_SYSCTL_SYSCALL=y +# CONFIG_ELF_CORE is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_SHMEM is not set +# CONFIG_AIO is not set +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MEM_BASE=0x10000000 +CONFIG_NIOS2_HW_MUL_SUPPORT=y +CONFIG_NIOS2_HW_DIV_SUPPORT=y +CONFIG_CUSTOM_CACHE_SETTINGS=y +CONFIG_NIOS2_DCACHE_SIZE=0x8000 +CONFIG_NIOS2_ICACHE_SIZE=0x8000 +# CONFIG_CMDLINE_IGNORE_DTB is not set +CONFIG_PASS_CMDLINE=y +CONFIG_BOOT_LINK_OFFSET=0x00800000 +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_IP_PNP_RARP=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_IPV6 is not set +# CONFIG_WIRELESS is not set +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_CMDLINE_PARTS=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_CFI=y +CONFIG_MTD_CFI_INTELEXT=y +CONFIG_MTD_CFI_AMDSTD=y +CONFIG_MTD_PHYSMAP_OF=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_NETDEVICES=y +CONFIG_ALTERA_TSE=y +CONFIG_MARVELL_PHY=y +# CONFIG_WLAN is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO_SERPORT is not set +# CONFIG_VT is not set +CONFIG_SERIAL_ALTERA_JTAGUART=y +CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE=y +CONFIG_SERIAL_ALTERA_UART=y +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +# CONFIG_DNOTIFY is not set +# CONFIG_INOTIFY_USER is not set +CONFIG_JFFS2_FS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V3_ACL=y +CONFIG_SUNRPC_DEBUG=y +CONFIG_DEBUG_INFO=y +# CONFIG_ENABLE_WARN_DEPRECATED is not set diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild new file mode 100644 index 0000000..848a67f --- /dev/null +++ b/arch/nios2/include/asm/Kbuild @@ -0,0 +1,66 @@ +include include/asm-generic/Kbuild.asm + +header-y += ucontext.h +header-y += traps.h + +generic-y += atomic.h +generic-y += auxvec.h +generic-y += barrier.h +generic-y += bitops.h +generic-y += bitsperlong.h +generic-y += bug.h +generic-y += bugs.h +generic-y += cputime.h +generic-y += current.h +generic-y += device.h +generic-y += div64.h +generic-y += dma.h +generic-y += emergency-restart.h +generic-y += errno.h +generic-y += exec.h +generic-y += fb.h +generic-y += fcntl.h +generic-y += ftrace.h +generic-y += hardirq.h +generic-y += hash.h +generic-y += hw_irq.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += ipcbuf.h +generic-y += irq_regs.h +generic-y += kdebug.h +generic-y += kmap_types.h +generic-y += kvm_para.h +generic-y += local.h +generic-y += mcs_spinlock.h +generic-y += mman.h +generic-y += module.h +generic-y += msgbuf.h +generic-y += param.h +generic-y += percpu.h +generic-y += poll.h +generic-y += posix_types.h +generic-y += preempt.h +generic-y += resource.h +generic-y += scatterlist.h +generic-y += sections.h +generic-y += segment.h +generic-y += sembuf.h +generic-y += serial.h +generic-y += shmbuf.h +generic-y += shmparam.h +generic-y += siginfo.h +generic-y += signal.h +generic-y += socket.h +generic-y += sockios.h +generic-y += spinlock.h +generic-y += stat.h +generic-y += statfs.h +generic-y += termbits.h +generic-y += termios.h +generic-y += topology.h +generic-y += trace_clock.h +generic-y += types.h +generic-y += unaligned.h +generic-y += user.h +generic-y += xor.h diff --git a/arch/nios2/include/uapi/asm/Kbuild b/arch/nios2/include/uapi/asm/Kbuild new file mode 100644 index 0000000..6d9f2e8e6798d254dee8dd32a8a963ddd70bbe07 --- /dev/null +++ b/arch/nios2/include/uapi/asm/Kbuild @@ -0,0 +1,14 @@ +include include/uapi/asm-generic/Kbuild.asm + +header-y += byteorder.h +header-y += elf.h +header-y += kvm_para.h +header-y += processor.h +header-y += ptrace.h +header-y += setup.h +header-y += sigcontext.h +header-y += signal.h +header-y += stat.h +header-y += statfs.h +header-y += swab.h +header-y += unistd.h diff --git a/arch/nios2/kernel/Makefile b/arch/nios2/kernel/Makefile new file mode 100644 index 0000000..c46ddee --- /dev/null +++ b/arch/nios2/kernel/Makefile @@ -0,0 +1,14 @@ +# +# Makefile for the nios2 linux kernel. +# + +extra-y := head.o vmlinux.lds + +obj-y += entry.o + +obj-y += cpuinfo.o insnemu.o irq.o nios2_ksyms.o process.o prom.o ptrace.o \ + setup.o signal.o sys_nios2.o syscall_table.o time.o traps.o + +obj-$(CONFIG_MODULES) += module.o +obj-$(CONFIG_CONSOLE) += console.o +obj-$(CONFIG_ALIGNMENT_TRAP) += misaligned.o diff --git a/arch/nios2/kernel/nios2_ksyms.c b/arch/nios2/kernel/nios2_ksyms.c new file mode 100644 index 0000000..eaf7f0cee5facf67e9a7f191ecbb8bc34e387b23 --- /dev/null +++ b/arch/nios2/kernel/nios2_ksyms.c @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2004 Microtronix Datacom Ltd + * + * 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 +#include + +/* string functions */ + +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(memmove); + +/* + * 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). + */ +#define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name) + +DECLARE_EXPORT(__gcc_bcmp); +DECLARE_EXPORT(__divdi3); +DECLARE_EXPORT(__divsi3); +DECLARE_EXPORT(__moddi3); +DECLARE_EXPORT(__modsi3); +DECLARE_EXPORT(__udivdi3); +DECLARE_EXPORT(__udivmoddi4); +DECLARE_EXPORT(__udivsi3); +DECLARE_EXPORT(__umoddi3); +DECLARE_EXPORT(__umodsi3); +DECLARE_EXPORT(__muldi3); diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S new file mode 100644 index 0000000..ec43c9f72b18a6ce79559d0da7ab8483a8aaba45 --- /dev/null +++ b/arch/nios2/kernel/vmlinux.lds.S @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2009 Thomas Chou + * + * 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, see . + * + */ +#include +#include +#include +#include + +OUTPUT_FORMAT("elf32-littlenios2", "elf32-littlenios2", "elf32-littlenios2") + +OUTPUT_ARCH(nios) +ENTRY(_start) /* Defined in head.S */ + +jiffies = jiffies_64; + +SECTIONS +{ + . = CONFIG_MEM_BASE | CONFIG_KERNEL_REGION_BASE; + + _text = .; + _stext = .; + HEAD_TEXT_SECTION + .text : { + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + IRQENTRY_TEXT + KPROBES_TEXT + } =0 + _etext = .; + + .got : { + *(.got.plt) + *(.igot.plt) + *(.got) + *(.igot) + } + + EXCEPTION_TABLE(L1_CACHE_BYTES) + + . = ALIGN(PAGE_SIZE); + __init_begin = .; + INIT_TEXT_SECTION(PAGE_SIZE) + INIT_DATA_SECTION(PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) + __init_end = .; + + _sdata = .; + RO_DATA_SECTION(PAGE_SIZE) + RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) + _edata = .; + + BSS_SECTION(0, 0, 0) + _end = .; + + STABS_DEBUG + DWARF_DEBUG + NOTES + + DISCARDS +} diff --git a/arch/nios2/lib/Makefile b/arch/nios2/lib/Makefile new file mode 100644 index 0000000..f9c5bc02ba357adb37d812f0bd0a30fc76d909b8 --- /dev/null +++ b/arch/nios2/lib/Makefile @@ -0,0 +1 @@ +lib-y = memset.o memcpy.o memmove.o \ No newline at end of file diff --git a/arch/nios2/mm/Makefile b/arch/nios2/mm/Makefile new file mode 100644 index 0000000..6ef15aae70ef0937bd53574997fcae82116f9245 --- /dev/null +++ b/arch/nios2/mm/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for the Nios2-specific parts of the memory manager. +# + +obj-y := init.o + +obj-y += cacheflush.o + +obj-y += pgtable.o tlb.o uaccess.o fault.o +obj-y += ioremap.o extable.o mmu_context.o + +obj-y += dma-mapping.o \ No newline at end of file diff --git a/arch/nios2/platform/Kconfig.platform b/arch/nios2/platform/Kconfig.platform new file mode 100644 index 0000000..e767c51afd9f4b588a256ff2c75ac273fe920fa7 --- /dev/null +++ b/arch/nios2/platform/Kconfig.platform @@ -0,0 +1,129 @@ +menu "Platform options" + +comment "Memory settings" + +config MEM_BASE + hex "Memory base address" + default "0x00000000" + help + This is the physical address of the memory that the kernel will run + from. This address is used to link the kernel and setup initial memory + management. You should take the raw memory address without any MMU + or cache bits set. + Please not that this address is used directly so you have to manually + do address translation if it's connected to a bridge. + +comment "Device tree" + +config NIOS2_DTB_AT_PHYS_ADDR + bool "DTB at physical address" + default n + help + When enabled you can select a physical address to load the dtb from. + Normally this address is passed by a bootloader such as u-boot but + using this you can use a devicetree without a bootloader. + This way you can store a devicetree in NOR flash or an onchip rom. + Please note that this addres is used directly so you have to manually + do address translation if it's connected to a bridge. Also take into + account that when using an MMU you'd have to ad 0xC0000000 to your + address + +config NIOS2_DTB_PHYS_ADDR + hex "DTB Address" + depends on NIOS2_DTB_AT_PHYS_ADDR + default "0xC0000000" + help + Physical address of a dtb blob. + +config DTB_SOURCE_BOOL + bool "Compile and link device tree into kernel image" + default n + help + This allows you to specify a dts (device tree source) file + which will be compiled and linked into the kernel image. + +config DTB_SOURCE + string "Device tree source file" + depends on DTB_SOURCE_BOOL + default "" + help + Absolute path to the device tree source (dts) file describing your + system. + +comment "Nios II instructions" + +config NIOS2_HW_MUL_SUPPORT + bool "Enable MUL instruction" + default n + help + Set to true if you configured the Nios II to include the MUL + instruction. This will enable the -mhw-mul compiler flag. + +config NIOS2_HW_MULX_SUPPORT + bool "Enable MULX instruction" + default n + help + Set to true if you configured the Nios II to include the MULX + instruction. Enables the -mhw-mulx compiler flag. + +config NIOS2_HW_DIV_SUPPORT + bool "Enable DIV instruction" + default n + help + Set to true if you configured the Nios II to include the DIV + instruction. Enables the -mhw-div compiler flag. + +config NIOS2_FPU_SUPPORT + bool "Custom floating point instr support" + default n + help + Enables the -mcustom-fpu-cfg=60-1 compiler flag. + +config NIOS2_CI_SWAB_SUPPORT + bool "Byteswap custom instruction" + default n + help + Use the byteswap (endian convertor) Nios II custom instruction provided + by Altera and which can be enabled in SOPC builder. This accelerates + endian conversions in the kernel (e.g. ntohs). + +config NIOS2_CI_SWAB_NO + int "Byteswap custom instruction number" if NIOS2_CI_SWAB_SUPPORT + default 0 + help + Number of the instruction as configured in SOPC Builder. + +comment "Cache settings" + +config CUSTOM_CACHE_SETTINGS + bool "Custom cache settings" + help + This option allows you to tweak the cache settings used during early + boot (where the information from device tree is not yet available). + There should be no reason to change these values. Linux will work + perfectly fine, even if the Nios II is configured with smaller caches. + + Say N here unless you know what you are doing. + +config NIOS2_DCACHE_SIZE + hex "D-Cache size" if CUSTOM_CACHE_SETTINGS + range 0x200 0x10000 + default "0x800" + help + Maximum possible data cache size. + +config NIOS2_DCACHE_LINE_SIZE + hex "D-Cache line size" if CUSTOM_CACHE_SETTINGS + range 0x10 0x20 + default "0x20" + help + Minimum possible data cache line size. + +config NIOS2_ICACHE_SIZE + hex "I-Cache size" if CUSTOM_CACHE_SETTINGS + range 0x200 0x10000 + default "0x1000" + help + Maximum possible instruction cache size. + +endmenu diff --git a/arch/nios2/platform/Makefile b/arch/nios2/platform/Makefile new file mode 100644 index 0000000..46364f1d9352d97547e8b8fc336c2fea06adb5b8 --- /dev/null +++ b/arch/nios2/platform/Makefile @@ -0,0 +1 @@ +obj-y += platform.o -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/