and make 32bit resource register more like 64 bit.
also move probe_roms back to setup_32.c
Signed-off-by: Yinghai Lu <[email protected]>
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -965,3 +965,35 @@ void __init finish_e820_parsing(void)
e820_print_map("user");
}
}
+
+/*
+ * Mark e820 reserved areas as busy for the resource manager.
+ */
+void __init e820_reserve_resources(void)
+{
+ int i;
+ struct resource *res;
+
+ res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
+ for (i = 0; i < e820.nr_map; i++) {
+ switch (e820.map[i].type) {
+ case E820_RAM: res->name = "System RAM"; break;
+ case E820_ACPI: res->name = "ACPI Tables"; break;
+ case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
+ default: res->name = "reserved";
+ }
+ res->start = e820.map[i].addr;
+ res->end = res->start + e820.map[i].size - 1;
+#ifndef CONFIG_RESOURCES_64BIT
+ if (res->end > 0x100000000ULL) {
+ res++;
+ continue;
+ }
+#endif
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ insert_resource(&iomem_resource, res);
+ res++;
+ }
+}
+
+
Index: linux-2.6/arch/x86/kernel/e820_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820_32.c
+++ linux-2.6/arch/x86/kernel/e820_32.c
@@ -15,198 +15,6 @@
#include <asm/e820.h>
#include <asm/setup.h>
-static struct resource system_rom_resource = {
- .name = "System ROM",
- .start = 0xf0000,
- .end = 0xfffff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-
-static struct resource extension_rom_resource = {
- .name = "Extension ROM",
- .start = 0xe0000,
- .end = 0xeffff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-
-static struct resource adapter_rom_resources[] = { {
- .name = "Adapter ROM",
- .start = 0xc8000,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-} };
-
-static struct resource video_rom_resource = {
- .name = "Video ROM",
- .start = 0xc0000,
- .end = 0xc7fff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-
-#define ROMSIGNATURE 0xaa55
-
-static int __init romsignature(const unsigned char *rom)
-{
- const unsigned short * const ptr = (const unsigned short *)rom;
- unsigned short sig;
-
- return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
-}
-
-static int __init romchecksum(const unsigned char *rom, unsigned long length)
-{
- unsigned char sum, c;
-
- for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
- sum += c;
- return !length && !sum;
-}
-
-static void __init probe_roms(void)
-{
- const unsigned char *rom;
- unsigned long start, length, upper;
- unsigned char c;
- int i;
-
- /* video rom */
- upper = adapter_rom_resources[0].start;
- for (start = video_rom_resource.start; start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- video_rom_resource.start = start;
-
- if (probe_kernel_address(rom + 2, c) != 0)
- continue;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = c * 512;
-
- /* if checksum okay, trust length byte */
- if (length && romchecksum(rom, length))
- video_rom_resource.end = start + length - 1;
-
- request_resource(&iomem_resource, &video_rom_resource);
- break;
- }
-
- start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
- if (start < upper)
- start = upper;
-
- /* system rom */
- request_resource(&iomem_resource, &system_rom_resource);
- upper = system_rom_resource.start;
-
- /* check for extension rom (ignore length byte!) */
- rom = isa_bus_to_virt(extension_rom_resource.start);
- if (romsignature(rom)) {
- length = extension_rom_resource.end - extension_rom_resource.start + 1;
- if (romchecksum(rom, length)) {
- request_resource(&iomem_resource, &extension_rom_resource);
- upper = extension_rom_resource.start;
- }
- }
-
- /* check for adapter roms on 2k boundaries */
- for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- if (probe_kernel_address(rom + 2, c) != 0)
- continue;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = c * 512;
-
- /* but accept any length that fits if checksum okay */
- if (!length || start + length > upper || !romchecksum(rom, length))
- continue;
-
- adapter_rom_resources[i].start = start;
- adapter_rom_resources[i].end = start + length - 1;
- request_resource(&iomem_resource, &adapter_rom_resources[i]);
-
- start = adapter_rom_resources[i++].end & ~2047UL;
- }
-}
-
-/*
- * Request address space for all standard RAM and ROM resources
- * and also for regions reported as reserved by the e820.
- */
-void __init init_iomem_resources(struct resource *code_resource,
- struct resource *data_resource,
- struct resource *bss_resource)
-{
- int i;
-
- probe_roms();
- for (i = 0; i < e820.nr_map; i++) {
- struct resource *res;
-#ifndef CONFIG_RESOURCES_64BIT
- if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
- continue;
-#endif
- res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
- switch (e820.map[i].type) {
- case E820_RAM: res->name = "System RAM"; break;
- case E820_ACPI: res->name = "ACPI Tables"; break;
- case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
- default: res->name = "reserved";
- }
- res->start = e820.map[i].addr;
- res->end = res->start + e820.map[i].size - 1;
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- if (request_resource(&iomem_resource, res)) {
- kfree(res);
- continue;
- }
- if (e820.map[i].type == E820_RAM) {
- /*
- * We don't know which RAM region contains kernel data,
- * so we try it repeatedly and let the resource manager
- * test it.
- */
- request_resource(res, code_resource);
- request_resource(res, data_resource);
- request_resource(res, bss_resource);
-#ifdef CONFIG_KEXEC
- if (crashk_res.start != crashk_res.end)
- request_resource(res, &crashk_res);
-#endif
- }
- }
-}
-
/* Overridden in paravirt.c if CONFIG_PARAVIRT */
char * __init __attribute__((weak)) memory_setup(void)
{
Index: linux-2.6/arch/x86/kernel/e820_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820_64.c
+++ linux-2.6/arch/x86/kernel/e820_64.c
@@ -41,30 +41,6 @@ unsigned long end_pfn;
*/
unsigned long max_pfn_mapped;
-/*
- * Mark e820 reserved areas as busy for the resource manager.
- */
-void __init e820_reserve_resources(void)
-{
- int i;
- struct resource *res;
-
- res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
- for (i = 0; i < e820.nr_map; i++) {
- switch (e820.map[i].type) {
- case E820_RAM: res->name = "System RAM"; break;
- case E820_ACPI: res->name = "ACPI Tables"; break;
- case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
- default: res->name = "reserved";
- }
- res->start = e820.map[i].addr;
- res->end = res->start + e820.map[i].size - 1;
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- insert_resource(&iomem_resource, res);
- res++;
- }
-}
-
static void early_panic(char *msg)
{
early_printk(msg);
Index: linux-2.6/arch/x86/kernel/setup_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup_32.c
+++ linux-2.6/arch/x86/kernel/setup_32.c
@@ -446,25 +446,28 @@ static void __init reserve_crashkernel(v
ret = parse_crashkernel(boot_command_line, total_mem,
&crash_size, &crash_base);
if (ret == 0 && crash_size > 0) {
- if (crash_base > 0) {
- printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
- "for crashkernel (System RAM: %ldMB)\n",
- (unsigned long)(crash_size >> 20),
- (unsigned long)(crash_base >> 20),
- (unsigned long)(total_mem >> 20));
+ if (crash_base <= 0) {
+ printk(KERN_INFO "crashkernel reservation failed - "
+ "you have to specify a base address\n");
+ return;
+ }
- if (reserve_bootmem(crash_base, crash_size,
+ if (reserve_bootmem_generic(crash_base, crash_size,
BOOTMEM_EXCLUSIVE) < 0) {
- printk(KERN_INFO "crashkernel reservation "
- "failed - memory is in use\n");
- return;
- }
-
- crashk_res.start = crash_base;
- crashk_res.end = crash_base + crash_size - 1;
- } else
printk(KERN_INFO "crashkernel reservation failed - "
- "you have to specify a base address\n");
+ "memory is in use\n");
+ return;
+ }
+
+ printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
+ "for crashkernel (System RAM: %ldMB)\n",
+ (unsigned long)(crash_size >> 20),
+ (unsigned long)(crash_base >> 20),
+ (unsigned long)(total_mem >> 20));
+
+ crashk_res.start = crash_base;
+ crashk_res.end = crash_base + crash_size - 1;
+ insert_resource(&iomem_resource, &crashk_res);
}
}
#else
@@ -682,6 +685,8 @@ char * __init __attribute__((weak)) memo
return machine_specific_memory_setup();
}
+static void probe_roms(void);
+
/*
* Determine if we were loaded by an EFI loader. If so, then we have also been
* passed the efi memmap, systab, etc., so we should use these data structures
@@ -691,6 +696,7 @@ char * __init __attribute__((weak)) memo
*/
void __init setup_arch(char **cmdline_p)
{
+ int i;
unsigned long max_low_pfn;
memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
@@ -757,6 +763,13 @@ void __init setup_arch(char **cmdline_p)
finish_e820_parsing();
+ probe_roms();
+
+ /* after parse_early_param, so could debug it */
+ insert_resource(&iomem_resource, &code_resource);
+ insert_resource(&iomem_resource, &data_resource);
+ insert_resource(&iomem_resource, &bss_resource);
+
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
@@ -861,9 +874,16 @@ void __init setup_arch(char **cmdline_p)
"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
#endif
- e820_setup_gap();
+ e820_reserve_resources();
e820_mark_nosave_regions(max_low_pfn);
+ request_resource(&iomem_resource, &video_ram_resource);
+ /* request I/O space for devices used on all i[345]86 PCs */
+ for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
+ request_resource(&ioport_resource, &standard_io_resources[i]);
+
+ e820_setup_gap();
+
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
@@ -874,25 +894,147 @@ void __init setup_arch(char **cmdline_p)
#endif
}
-/*
- * Request address space for all standard resources
- *
- * This is called just before pcibios_init(), which is also a
- * subsys_initcall, but is linked in later (in arch/i386/pci/common.c).
- */
-static int __init request_standard_resources(void)
+static struct resource system_rom_resource = {
+ .name = "System ROM",
+ .start = 0xf0000,
+ .end = 0xfffff,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+};
+
+static struct resource extension_rom_resource = {
+ .name = "Extension ROM",
+ .start = 0xe0000,
+ .end = 0xeffff,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+};
+
+static struct resource adapter_rom_resources[] = { {
+ .name = "Adapter ROM",
+ .start = 0xc8000,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+ .name = "Adapter ROM",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+ .name = "Adapter ROM",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+ .name = "Adapter ROM",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+ .name = "Adapter ROM",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+ .name = "Adapter ROM",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+} };
+
+static struct resource video_rom_resource = {
+ .name = "Video ROM",
+ .start = 0xc0000,
+ .end = 0xc7fff,
+ .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+};
+
+#define ROMSIGNATURE 0xaa55
+
+static int __init romsignature(const unsigned char *rom)
{
+ const unsigned short * const ptr = (const unsigned short *)rom;
+ unsigned short sig;
+
+ return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
+}
+
+static int __init romchecksum(const unsigned char *rom, unsigned long length)
+{
+ unsigned char sum, c;
+
+ for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
+ sum += c;
+ return !length && !sum;
+}
+
+static void __init probe_roms(void)
+{
+ const unsigned char *rom;
+ unsigned long start, length, upper;
+ unsigned char c;
int i;
- printk(KERN_INFO "Setting up standard PCI resources\n");
- init_iomem_resources(&code_resource, &data_resource, &bss_resource);
+ /* video rom */
+ upper = adapter_rom_resources[0].start;
+ for (start = video_rom_resource.start; start < upper; start += 2048) {
+ rom = isa_bus_to_virt(start);
+ if (!romsignature(rom))
+ continue;
+
+ video_rom_resource.start = start;
+
+ if (probe_kernel_address(rom + 2, c) != 0)
+ continue;
+
+ /* 0 < length <= 0x7f * 512, historically */
+ length = c * 512;
+
+ /* if checksum okay, trust length byte */
+ if (length && romchecksum(rom, length))
+ video_rom_resource.end = start + length - 1;
- request_resource(&iomem_resource, &video_ram_resource);
+ request_resource(&iomem_resource, &video_rom_resource);
+ break;
+ }
- /* request I/O space for devices used on all i[345]86 PCs */
- for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
- request_resource(&ioport_resource, &standard_io_resources[i]);
- return 0;
+ start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
+ if (start < upper)
+ start = upper;
+
+ /* system rom */
+ request_resource(&iomem_resource, &system_rom_resource);
+ upper = system_rom_resource.start;
+
+ /* check for extension rom (ignore length byte!) */
+ rom = isa_bus_to_virt(extension_rom_resource.start);
+ if (romsignature(rom)) {
+ length = extension_rom_resource.end - extension_rom_resource.start + 1;
+ if (romchecksum(rom, length)) {
+ request_resource(&iomem_resource, &extension_rom_resource);
+ upper = extension_rom_resource.start;
+ }
+ }
+
+ /* check for adapter roms on 2k boundaries */
+ for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
+ rom = isa_bus_to_virt(start);
+ if (!romsignature(rom))
+ continue;
+
+ if (probe_kernel_address(rom + 2, c) != 0)
+ continue;
+
+ /* 0 < length <= 0x7f * 512, historically */
+ length = c * 512;
+
+ /* but accept any length that fits if checksum okay */
+ if (!length || start + length > upper || !romchecksum(rom, length))
+ continue;
+
+ adapter_rom_resources[i].start = start;
+ adapter_rom_resources[i].end = start + length - 1;
+ request_resource(&iomem_resource, &adapter_rom_resources[i]);
+
+ start = adapter_rom_resources[i++].end & ~2047UL;
+ }
}
-subsys_initcall(request_standard_resources);
Index: linux-2.6/include/asm-x86/e820.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820.h
+++ linux-2.6/include/asm-x86/e820.h
@@ -98,6 +98,7 @@ extern void e820_register_active_regions
unsigned long end_pfn);
extern u64 e820_hole_size(u64 start, u64 end);
extern void finish_e820_parsing(void);
+extern void e820_reserve_resources(void);
#endif /* __ASSEMBLY__ */
Index: linux-2.6/include/asm-x86/e820_32.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820_32.h
+++ linux-2.6/include/asm-x86/e820_32.h
@@ -20,9 +20,5 @@
extern void setup_memory_map(void);
-extern void init_iomem_resources(struct resource *code_resource,
- struct resource *data_resource,
- struct resource *bss_resource);
-
#endif/*!__ASSEMBLY__*/
#endif/*__E820_HEADER*/
Index: linux-2.6/include/asm-x86/e820_64.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820_64.h
+++ linux-2.6/include/asm-x86/e820_64.h
@@ -16,7 +16,6 @@
#ifndef __ASSEMBLY__
extern void setup_memory_region(void);
extern void contig_e820_setup(void);
-extern void e820_reserve_resources(void);
extern int e820_any_non_reserved(unsigned long start, unsigned long end);
extern int is_memory_any_valid(unsigned long start, unsigned long end);
extern int e820_all_non_reserved(unsigned long start, unsigned long end);
and kill e820_32/64.c and e820_32/64.h
Signed-off-by: Yinghai Lu <[email protected]>
Index: linux-2.6/arch/x86/mm/init_64.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/init_64.c
+++ linux-2.6/arch/x86/mm/init_64.c
@@ -48,6 +48,18 @@
#include <asm/numa.h>
#include <asm/cacheflush.h>
+/*
+ * PFN of last memory page.
+ */
+unsigned long end_pfn;
+
+/*
+ * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
+ * The direct mapping extends to max_pfn_mapped, so that we can directly access
+ * apertures, ACPI and other tables without having to play with fixmaps.
+ */
+unsigned long max_pfn_mapped;
+
static unsigned long dma_reserve __initdata;
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
Index: linux-2.6/arch/x86/kernel/setup_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup_64.c
+++ linux-2.6/arch/x86/kernel/setup_64.c
@@ -281,12 +281,6 @@ static inline void __init reserve_crashk
{}
#endif
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-void __attribute__((weak)) __init memory_setup(void)
-{
- machine_specific_memory_setup();
-}
-
/* Current gdt points %fs at the "master" per-cpu area: after this,
* it's on the real one. */
void switch_to_new_gdt(void)
@@ -330,7 +324,7 @@ void __init setup_arch(char **cmdline_p)
ARCH_SETUP
- memory_setup();
+ setup_memory_map();
copy_edd();
if (!boot_params.hdr.root_flags)
Index: linux-2.6/arch/x86/kernel/e820_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820_64.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Handle the memory map.
- * The functions here do the job until bootmem takes over.
- *
- * Getting sanitize_e820_map() in sync with i386 version by applying change:
- * - Provisions for empty E820 memory regions (reported by certain BIOSes).
- * Alex Achenbach <[email protected]>, December 2002.
- * Venkatesh Pallipadi <[email protected]>
- *
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/kexec.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pfn.h>
-#include <linux/pci.h>
-
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/e820.h>
-#include <asm/proto.h>
-#include <asm/setup.h>
-#include <asm/sections.h>
-#include <asm/kdebug.h>
-#include <asm/trampoline.h>
-
-/*
- * PFN of last memory page.
- */
-unsigned long end_pfn;
-
-/*
- * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
- * The direct mapping extends to max_pfn_mapped, so that we can directly access
- * apertures, ACPI and other tables without having to play with fixmaps.
- */
-unsigned long max_pfn_mapped;
-
-static void early_panic(char *msg)
-{
- early_printk(msg);
- panic(msg);
-}
-
-/* We're not void only for x86 32-bit compat */
-char *__init machine_specific_memory_setup(void)
-{
- char *who = "BIOS-e820";
- int new_nr;
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
- ARRAY_SIZE(boot_params.e820_map),
- &new_nr);
- boot_params.e820_entries = new_nr;
- if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0)
- early_panic("Cannot find a valid memory map");
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- e820_print_map(who);
-
- /* In case someone cares... */
- return who;
-}
-
-int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
-{
- int i;
-
- if (slot < 0 || slot >= e820.nr_map)
- return -1;
- for (i = slot; i < e820.nr_map; i++) {
- if (e820.map[i].type != E820_RAM)
- continue;
- break;
- }
- if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
- return -1;
- *addr = e820.map[i].addr;
- *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
- max_pfn << PAGE_SHIFT) - *addr;
- return i + 1;
-}
Index: linux-2.6/arch/x86/kernel/e820_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820_32.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/kexec.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pfn.h>
-#include <linux/uaccess.h>
-
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/e820.h>
-#include <asm/setup.h>
-
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __init __attribute__((weak)) memory_setup(void)
-{
- return machine_specific_memory_setup();
-}
-
-void __init setup_memory_map(void)
-{
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- e820_print_map(memory_setup());
-}
-
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -996,4 +996,76 @@ void __init e820_reserve_resources(void)
}
}
+char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+{
+ char *who = "BIOS-e820";
+ int new_nr;
+ /*
+ * Try to copy the BIOS-supplied E820-map.
+ *
+ * Otherwise fake a memory map; one section from 0k->640k,
+ * the next section from 1mb->appropriate_mem_k
+ */
+ new_nr = boot_params.e820_entries;
+ sanitize_e820_map(boot_params.e820_map,
+ ARRAY_SIZE(boot_params.e820_map),
+ &new_nr);
+ boot_params.e820_entries = new_nr;
+ if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
+#ifdef CONFIG_X86_64
+ early_panic("Cannot find a valid memory map");
+#else
+ unsigned long mem_size;
+ /* compare results from other methods and take the greater */
+ if (boot_params.alt_mem_k
+ < boot_params.screen_info.ext_mem_k) {
+ mem_size = boot_params.screen_info.ext_mem_k;
+ who = "BIOS-88";
+ } else {
+ mem_size = boot_params.alt_mem_k;
+ who = "BIOS-e801";
+ }
+
+ e820.nr_map = 0;
+ e820_add_region(0, LOWMEMSIZE(), E820_RAM);
+ e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
+#endif
+ }
+
+ /* In case someone cares... */
+ return who;
+}
+
+/* Overridden in paravirt.c if CONFIG_PARAVIRT */
+char * __init __attribute__((weak)) memory_setup(void)
+{
+ return machine_specific_memory_setup();
+}
+
+void __init setup_memory_map(void)
+{
+ printk(KERN_INFO "BIOS-provided physical RAM map:\n");
+ e820_print_map(memory_setup());
+}
+
+#ifdef CONFIG_X86_64
+int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
+{
+ int i;
+
+ if (slot < 0 || slot >= e820.nr_map)
+ return -1;
+ for (i = slot; i < e820.nr_map; i++) {
+ if (e820.map[i].type != E820_RAM)
+ continue;
+ break;
+ }
+ if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
+ return -1;
+ *addr = e820.map[i].addr;
+ *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
+ max_pfn << PAGE_SHIFT) - *addr;
+ return i + 1;
+}
+#endif
Index: linux-2.6/include/asm-x86/e820_32.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820_32.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * structures and definitions for the int 15, ax=e820 memory map
- * scheme.
- *
- * In a nutshell, arch/i386/boot/setup.S populates a scratch table
- * in the empty_zero_block that contains a list of usable address/size
- * duples. In arch/i386/kernel/setup.c, this information is
- * transferred into the e820map, and in arch/i386/mm/init.c, that
- * new information is used to mark pages reserved or not.
- *
- */
-#ifndef __E820_HEADER
-#define __E820_HEADER
-
-#include <linux/ioport.h>
-
-#define HIGH_MEMORY (1024*1024)
-
-#ifndef __ASSEMBLY__
-
-extern void setup_memory_map(void);
-
-#endif/*!__ASSEMBLY__*/
-#endif/*__E820_HEADER*/
Index: linux-2.6/include/asm-x86/e820_64.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820_64.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * structures and definitions for the int 15, ax=e820 memory map
- * scheme.
- *
- * In a nutshell, setup.S populates a scratch table in the
- * empty_zero_block that contains a list of usable address/size
- * duples. setup.c, this information is transferred into the e820map,
- * and in init.c/numa.c, that new information is used to mark pages
- * reserved or not.
- */
-#ifndef __E820_HEADER
-#define __E820_HEADER
-
-#include <linux/ioport.h>
-
-#ifndef __ASSEMBLY__
-extern void setup_memory_region(void);
-extern void contig_e820_setup(void);
-extern int e820_any_non_reserved(unsigned long start, unsigned long end);
-extern int is_memory_any_valid(unsigned long start, unsigned long end);
-extern int e820_all_non_reserved(unsigned long start, unsigned long end);
-extern int is_memory_all_valid(unsigned long start, unsigned long end);
-
-#endif/*!__ASSEMBLY__*/
-
-#endif/*__E820_HEADER*/
Index: linux-2.6/include/asm-x86/e820.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820.h
+++ linux-2.6/include/asm-x86/e820.h
@@ -99,6 +99,9 @@ extern void e820_register_active_regions
extern u64 e820_hole_size(u64 start, u64 end);
extern void finish_e820_parsing(void);
extern void e820_reserve_resources(void);
+extern void setup_memory_map(void);
+extern char *machine_specific_memory_setup(void);
+extern char *memory_setup(void);
#endif /* __ASSEMBLY__ */
@@ -109,10 +112,10 @@ extern void e820_reserve_resources(void)
#define BIOS_END 0x00100000
#ifdef __KERNEL__
+#include <linux/ioport.h>
+
#ifdef CONFIG_X86_32
-# include "e820_32.h"
-#else
-# include "e820_64.h"
+#define HIGH_MEMORY (1024*1024)
#endif
#endif /* __KERNEL__ */
Index: linux-2.6/arch/x86/mach-default/setup.c
===================================================================
--- linux-2.6.orig/arch/x86/mach-default/setup.c
+++ linux-2.6/arch/x86/mach-default/setup.c
@@ -142,50 +142,3 @@ static int __init print_ipi_mode(void)
late_initcall(print_ipi_mode);
-/**
- * machine_specific_memory_setup - Hook for machine specific memory setup.
- *
- * Description:
- * This is included late in kernel/setup.c so that it can make
- * use of all of the static functions.
- **/
-
-char * __init machine_specific_memory_setup(void)
-{
- char *who;
- int new_nr;
-
-
- who = "BIOS-e820";
-
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
- ARRAY_SIZE(boot_params.e820_map),
- &new_nr);
- boot_params.e820_entries = new_nr;
- if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
- < 0) {
- unsigned long mem_size;
-
- /* compare results from other methods and take the greater */
- if (boot_params.alt_mem_k
- < boot_params.screen_info.ext_mem_k) {
- mem_size = boot_params.screen_info.ext_mem_k;
- who = "BIOS-88";
- } else {
- mem_size = boot_params.alt_mem_k;
- who = "BIOS-e801";
- }
-
- e820.nr_map = 0;
- e820_add_region(0, LOWMEMSIZE(), E820_RAM);
- e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
- }
- return who;
-}
Index: linux-2.6/include/asm-x86/setup.h
===================================================================
--- linux-2.6.orig/include/asm-x86/setup.h
+++ linux-2.6/include/asm-x86/setup.h
@@ -8,7 +8,6 @@
/* Interrupt control for vSMPowered x86_64 systems */
void vsmp_init(void);
-char *machine_specific_memory_setup(void);
#ifndef CONFIG_PARAVIRT
#define paravirt_post_allocator_init() do {} while (0)
#endif
@@ -50,10 +49,6 @@ extern struct boot_params boot_params;
*/
#define LOWMEMSIZE() (0x9f000)
-char * __init machine_specific_memory_setup(void);
-char *memory_setup(void);
-
-
void __init i386_start_kernel(void);
extern unsigned long init_pg_tables_start;
Index: linux-2.6/arch/x86/kernel/Makefile
===================================================================
--- linux-2.6.orig/arch/x86/kernel/Makefile
+++ linux-2.6/arch/x86/kernel/Makefile
@@ -30,7 +30,7 @@ obj-y += setup_$(BITS).o i8259.o irqin
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
-obj-y += bootflag.o e820_$(BITS).o e820.o
+obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o
obj-y += tsc_$(BITS).o io_delay.o rtc.o
On Mon, Jun 16, 2008 at 11:58 PM, Yinghai Lu <[email protected]> wrote:
>
> and kill e820_32/64.c and e820_32/64.h
>
> Signed-off-by: Yinghai Lu <[email protected]>
>
> Index: linux-2.6/arch/x86/mm/init_64.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/mm/init_64.c
> +++ linux-2.6/arch/x86/mm/init_64.c
> @@ -48,6 +48,18 @@
> #include <asm/numa.h>
> #include <asm/cacheflush.h>
>
> +/*
> + * PFN of last memory page.
> + */
> +unsigned long end_pfn;
> +
> +/*
> + * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
> + * The direct mapping extends to max_pfn_mapped, so that we can directly access
> + * apertures, ACPI and other tables without having to play with fixmaps.
> + */
> +unsigned long max_pfn_mapped;
> +
> static unsigned long dma_reserve __initdata;
>
> DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
> Index: linux-2.6/arch/x86/kernel/setup_64.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/setup_64.c
> +++ linux-2.6/arch/x86/kernel/setup_64.c
> @@ -281,12 +281,6 @@ static inline void __init reserve_crashk
> {}
> #endif
>
> -/* Overridden in paravirt.c if CONFIG_PARAVIRT */
> -void __attribute__((weak)) __init memory_setup(void)
> -{
> - machine_specific_memory_setup();
> -}
> -
> /* Current gdt points %fs at the "master" per-cpu area: after this,
> * it's on the real one. */
> void switch_to_new_gdt(void)
> @@ -330,7 +324,7 @@ void __init setup_arch(char **cmdline_p)
>
> ARCH_SETUP
>
> - memory_setup();
> + setup_memory_map();
> copy_edd();
>
> if (!boot_params.hdr.root_flags)
> Index: linux-2.6/arch/x86/kernel/e820_64.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/e820_64.c
> +++ /dev/null
> @@ -1,92 +0,0 @@
> -/*
> - * Handle the memory map.
> - * The functions here do the job until bootmem takes over.
> - *
> - * Getting sanitize_e820_map() in sync with i386 version by applying change:
> - * - Provisions for empty E820 memory regions (reported by certain BIOSes).
> - * Alex Achenbach <[email protected]>, December 2002.
> - * Venkatesh Pallipadi <[email protected]>
> - *
> - */
> -#include <linux/kernel.h>
> -#include <linux/types.h>
> -#include <linux/init.h>
> -#include <linux/bootmem.h>
> -#include <linux/ioport.h>
> -#include <linux/string.h>
> -#include <linux/kexec.h>
> -#include <linux/module.h>
> -#include <linux/mm.h>
> -#include <linux/pfn.h>
> -#include <linux/pci.h>
> -
> -#include <asm/pgtable.h>
> -#include <asm/page.h>
> -#include <asm/e820.h>
> -#include <asm/proto.h>
> -#include <asm/setup.h>
> -#include <asm/sections.h>
> -#include <asm/kdebug.h>
> -#include <asm/trampoline.h>
> -
> -/*
> - * PFN of last memory page.
> - */
> -unsigned long end_pfn;
> -
> -/*
> - * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
> - * The direct mapping extends to max_pfn_mapped, so that we can directly access
> - * apertures, ACPI and other tables without having to play with fixmaps.
> - */
> -unsigned long max_pfn_mapped;
> -
> -static void early_panic(char *msg)
> -{
> - early_printk(msg);
> - panic(msg);
> -}
> -
> -/* We're not void only for x86 32-bit compat */
> -char *__init machine_specific_memory_setup(void)
> -{
> - char *who = "BIOS-e820";
> - int new_nr;
> - /*
> - * Try to copy the BIOS-supplied E820-map.
> - *
> - * Otherwise fake a memory map; one section from 0k->640k,
> - * the next section from 1mb->appropriate_mem_k
> - */
> - new_nr = boot_params.e820_entries;
> - sanitize_e820_map(boot_params.e820_map,
> - ARRAY_SIZE(boot_params.e820_map),
> - &new_nr);
> - boot_params.e820_entries = new_nr;
> - if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0)
> - early_panic("Cannot find a valid memory map");
> - printk(KERN_INFO "BIOS-provided physical RAM map:\n");
> - e820_print_map(who);
> -
> - /* In case someone cares... */
> - return who;
> -}
> -
> -int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
> -{
> - int i;
> -
> - if (slot < 0 || slot >= e820.nr_map)
> - return -1;
> - for (i = slot; i < e820.nr_map; i++) {
> - if (e820.map[i].type != E820_RAM)
> - continue;
> - break;
> - }
> - if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
> - return -1;
> - *addr = e820.map[i].addr;
> - *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
> - max_pfn << PAGE_SHIFT) - *addr;
> - return i + 1;
> -}
> Index: linux-2.6/arch/x86/kernel/e820_32.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/e820_32.c
> +++ /dev/null
> @@ -1,29 +0,0 @@
> -#include <linux/kernel.h>
> -#include <linux/types.h>
> -#include <linux/init.h>
> -#include <linux/bootmem.h>
> -#include <linux/ioport.h>
> -#include <linux/string.h>
> -#include <linux/kexec.h>
> -#include <linux/module.h>
> -#include <linux/mm.h>
> -#include <linux/pfn.h>
> -#include <linux/uaccess.h>
> -
> -#include <asm/pgtable.h>
> -#include <asm/page.h>
> -#include <asm/e820.h>
> -#include <asm/setup.h>
> -
> -/* Overridden in paravirt.c if CONFIG_PARAVIRT */
> -char * __init __attribute__((weak)) memory_setup(void)
> -{
> - return machine_specific_memory_setup();
> -}
> -
> -void __init setup_memory_map(void)
> -{
> - printk(KERN_INFO "BIOS-provided physical RAM map:\n");
> - e820_print_map(memory_setup());
> -}
> -
> Index: linux-2.6/arch/x86/kernel/e820.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/e820.c
> +++ linux-2.6/arch/x86/kernel/e820.c
> @@ -996,4 +996,76 @@ void __init e820_reserve_resources(void)
> }
> }
>
> +char *__init __attribute__((weak)) machine_specific_memory_setup(void)
> +{
> + char *who = "BIOS-e820";
> + int new_nr;
> + /*
> + * Try to copy the BIOS-supplied E820-map.
> + *
> + * Otherwise fake a memory map; one section from 0k->640k,
> + * the next section from 1mb->appropriate_mem_k
> + */
> + new_nr = boot_params.e820_entries;
> + sanitize_e820_map(boot_params.e820_map,
> + ARRAY_SIZE(boot_params.e820_map),
> + &new_nr);
> + boot_params.e820_entries = new_nr;
> + if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
> +#ifdef CONFIG_X86_64
> + early_panic("Cannot find a valid memory map");
> +#else
Can't this be made dependant on HIGHMEM instead of X86_64? It seems
high-memory dependant anyway. Also, are you sure
this code that maps into himem would work with HIGHMEM disabled anyway?
> + unsigned long mem_size;
>
> + /* compare results from other methods and take the greater */
> + if (boot_params.alt_mem_k
> + < boot_params.screen_info.ext_mem_k) {
> + mem_size = boot_params.screen_info.ext_mem_k;
> + who = "BIOS-88";
> + } else {
> + mem_size = boot_params.alt_mem_k;
> + who = "BIOS-e801";
> + }
> +
> + e820.nr_map = 0;
> + e820_add_region(0, LOWMEMSIZE(), E820_RAM);
> + e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
> +#endif
> + }
> +
> + /* In case someone cares... */
> + return who;
> +}
> +
> +/* Overridden in paravirt.c if CONFIG_PARAVIRT */
> +char * __init __attribute__((weak)) memory_setup(void)
> +{
> + return machine_specific_memory_setup();
> +}
> +
> +void __init setup_memory_map(void)
> +{
> + printk(KERN_INFO "BIOS-provided physical RAM map:\n");
> + e820_print_map(memory_setup());
> +}
> +
> +#ifdef CONFIG_X86_64
> +int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
> +{
> + int i;
> +
> + if (slot < 0 || slot >= e820.nr_map)
> + return -1;
> + for (i = slot; i < e820.nr_map; i++) {
> + if (e820.map[i].type != E820_RAM)
> + continue;
> + break;
> + }
> + if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
> + return -1;
> + *addr = e820.map[i].addr;
> + *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
> + max_pfn << PAGE_SHIFT) - *addr;
> + return i + 1;
> +}
> +#endif
> Index: linux-2.6/include/asm-x86/e820_32.h
> ===================================================================
> --- linux-2.6.orig/include/asm-x86/e820_32.h
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -/*
> - * structures and definitions for the int 15, ax=e820 memory map
> - * scheme.
> - *
> - * In a nutshell, arch/i386/boot/setup.S populates a scratch table
> - * in the empty_zero_block that contains a list of usable address/size
> - * duples. In arch/i386/kernel/setup.c, this information is
> - * transferred into the e820map, and in arch/i386/mm/init.c, that
> - * new information is used to mark pages reserved or not.
> - *
> - */
> -#ifndef __E820_HEADER
> -#define __E820_HEADER
> -
> -#include <linux/ioport.h>
> -
> -#define HIGH_MEMORY (1024*1024)
> -
> -#ifndef __ASSEMBLY__
> -
> -extern void setup_memory_map(void);
> -
> -#endif/*!__ASSEMBLY__*/
> -#endif/*__E820_HEADER*/
> Index: linux-2.6/include/asm-x86/e820_64.h
> ===================================================================
> --- linux-2.6.orig/include/asm-x86/e820_64.h
> +++ /dev/null
> @@ -1,26 +0,0 @@
> -/*
> - * structures and definitions for the int 15, ax=e820 memory map
> - * scheme.
> - *
> - * In a nutshell, setup.S populates a scratch table in the
> - * empty_zero_block that contains a list of usable address/size
> - * duples. setup.c, this information is transferred into the e820map,
> - * and in init.c/numa.c, that new information is used to mark pages
> - * reserved or not.
> - */
> -#ifndef __E820_HEADER
> -#define __E820_HEADER
> -
> -#include <linux/ioport.h>
> -
> -#ifndef __ASSEMBLY__
> -extern void setup_memory_region(void);
> -extern void contig_e820_setup(void);
> -extern int e820_any_non_reserved(unsigned long start, unsigned long end);
> -extern int is_memory_any_valid(unsigned long start, unsigned long end);
> -extern int e820_all_non_reserved(unsigned long start, unsigned long end);
> -extern int is_memory_all_valid(unsigned long start, unsigned long end);
> -
> -#endif/*!__ASSEMBLY__*/
> -
> -#endif/*__E820_HEADER*/
> Index: linux-2.6/include/asm-x86/e820.h
> ===================================================================
> --- linux-2.6.orig/include/asm-x86/e820.h
> +++ linux-2.6/include/asm-x86/e820.h
> @@ -99,6 +99,9 @@ extern void e820_register_active_regions
> extern u64 e820_hole_size(u64 start, u64 end);
> extern void finish_e820_parsing(void);
> extern void e820_reserve_resources(void);
> +extern void setup_memory_map(void);
> +extern char *machine_specific_memory_setup(void);
> +extern char *memory_setup(void);
>
> #endif /* __ASSEMBLY__ */
>
> @@ -109,10 +112,10 @@ extern void e820_reserve_resources(void)
> #define BIOS_END 0x00100000
>
> #ifdef __KERNEL__
> +#include <linux/ioport.h>
> +
> #ifdef CONFIG_X86_32
> -# include "e820_32.h"
> -#else
> -# include "e820_64.h"
> +#define HIGH_MEMORY (1024*1024)
> #endif
> #endif /* __KERNEL__ */
>
> Index: linux-2.6/arch/x86/mach-default/setup.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/mach-default/setup.c
> +++ linux-2.6/arch/x86/mach-default/setup.c
> @@ -142,50 +142,3 @@ static int __init print_ipi_mode(void)
>
> late_initcall(print_ipi_mode);
>
> -/**
> - * machine_specific_memory_setup - Hook for machine specific memory setup.
> - *
> - * Description:
> - * This is included late in kernel/setup.c so that it can make
> - * use of all of the static functions.
> - **/
> -
> -char * __init machine_specific_memory_setup(void)
> -{
> - char *who;
> - int new_nr;
> -
> -
> - who = "BIOS-e820";
> -
> - /*
> - * Try to copy the BIOS-supplied E820-map.
> - *
> - * Otherwise fake a memory map; one section from 0k->640k,
> - * the next section from 1mb->appropriate_mem_k
> - */
> - new_nr = boot_params.e820_entries;
> - sanitize_e820_map(boot_params.e820_map,
> - ARRAY_SIZE(boot_params.e820_map),
> - &new_nr);
> - boot_params.e820_entries = new_nr;
> - if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
> - < 0) {
> - unsigned long mem_size;
> -
> - /* compare results from other methods and take the greater */
> - if (boot_params.alt_mem_k
> - < boot_params.screen_info.ext_mem_k) {
> - mem_size = boot_params.screen_info.ext_mem_k;
> - who = "BIOS-88";
> - } else {
> - mem_size = boot_params.alt_mem_k;
> - who = "BIOS-e801";
> - }
> -
> - e820.nr_map = 0;
> - e820_add_region(0, LOWMEMSIZE(), E820_RAM);
> - e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
> - }
> - return who;
> -}
> Index: linux-2.6/include/asm-x86/setup.h
> ===================================================================
> --- linux-2.6.orig/include/asm-x86/setup.h
> +++ linux-2.6/include/asm-x86/setup.h
> @@ -8,7 +8,6 @@
> /* Interrupt control for vSMPowered x86_64 systems */
> void vsmp_init(void);
>
> -char *machine_specific_memory_setup(void);
> #ifndef CONFIG_PARAVIRT
> #define paravirt_post_allocator_init() do {} while (0)
> #endif
> @@ -50,10 +49,6 @@ extern struct boot_params boot_params;
> */
> #define LOWMEMSIZE() (0x9f000)
>
> -char * __init machine_specific_memory_setup(void);
> -char *memory_setup(void);
> -
> -
> void __init i386_start_kernel(void);
>
> extern unsigned long init_pg_tables_start;
> Index: linux-2.6/arch/x86/kernel/Makefile
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/Makefile
> +++ linux-2.6/arch/x86/kernel/Makefile
> @@ -30,7 +30,7 @@ obj-y += setup_$(BITS).o i8259.o irqin
> obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
> obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
> obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
> -obj-y += bootflag.o e820_$(BITS).o e820.o
> +obj-y += bootflag.o e820.o
> obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
> obj-y += alternative.o i8253.o pci-nommu.o
> obj-y += tsc_$(BITS).o io_delay.o rtc.o
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
Glauber Costa.
"Free as in Freedom"
http://glommer.net
"The less confident you are, the more serious you have to act."
Glauber Costa wrote:
>> + boot_params.e820_entries = new_nr;
>> + if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
>> +#ifdef CONFIG_X86_64
>> + early_panic("Cannot find a valid memory map");
>> +#else
>
> Can't this be made dependant on HIGHMEM instead of X86_64? It seems
> high-memory dependant anyway. Also, are you sure
> this code that maps into himem would work with HIGHMEM disabled anyway?
>
Uhm... x86-64 and HIGHMEM are mutually exclusive.
Either way, it shouldn't be dependent on anything; there is no reason
why the #else clause can't be applied to both.
-hpa
On Tue, Jun 17, 2008 at 9:04 AM, H. Peter Anvin <[email protected]> wrote:
> Glauber Costa wrote:
>>>
>>> + boot_params.e820_entries = new_nr;
>>> + if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
>>> < 0) {
>>> +#ifdef CONFIG_X86_64
>>> + early_panic("Cannot find a valid memory map");
>>> +#else
>>
>> Can't this be made dependant on HIGHMEM instead of X86_64? It seems
>> high-memory dependant anyway. Also, are you sure
>> this code that maps into himem would work with HIGHMEM disabled anyway?
that is behavoir before merge.
>>
>
> Uhm... x86-64 and HIGHMEM are mutually exclusive.
>
> Either way, it shouldn't be dependent on anything; there is no reason why
> the #else clause can't be applied to both.
remove the early_panic?
YH
On Tue, Jun 17, 2008 at 1:18 PM, Yinghai Lu <[email protected]> wrote:
> On Tue, Jun 17, 2008 at 9:04 AM, H. Peter Anvin <[email protected]> wrote:
>> Glauber Costa wrote:
>>>>
>>>> + boot_params.e820_entries = new_nr;
>>>> + if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
>>>> < 0) {
>>>> +#ifdef CONFIG_X86_64
>>>> + early_panic("Cannot find a valid memory map");
>>>> +#else
>>>
>>> Can't this be made dependant on HIGHMEM instead of X86_64? It seems
>>> high-memory dependant anyway. Also, are you sure
>>> this code that maps into himem would work with HIGHMEM disabled anyway?
>
> that is behavoir before merge.
>
>>>
>>
>> Uhm... x86-64 and HIGHMEM are mutually exclusive.
>>
>> Either way, it shouldn't be dependent on anything; there is no reason why
>> the #else clause can't be applied to both.
>
> remove the early_panic?
If this can be done, I'm for it.
However, it would be better to leave this patch as is, and throw in
another one that just address that, for bisectability purposes.
> YH
>
--
Glauber Costa.
"Free as in Freedom"
http://glommer.net
"The less confident you are, the more serious you have to act."
Yinghai Lu wrote:
>
> that is behavoir before merge.
>
>> Uhm... x86-64 and HIGHMEM are mutually exclusive.
>>
>> Either way, it shouldn't be dependent on anything; there is no reason why
>> the #else clause can't be applied to both.
>
> remove the early_panic?
>
Yes, remove the early_panic(). Andi didn't want to support the non-e820
modes in x86-64, but if the code is unified there is no reason not to.
-hpa
On Tue, Jun 17, 2008 at 10:39 AM, H. Peter Anvin <[email protected]> wrote:
> Yinghai Lu wrote:
>>
>> that is behavoir before merge.
>>
>>> Uhm... x86-64 and HIGHMEM are mutually exclusive.
>>>
>>> Either way, it shouldn't be dependent on anything; there is no reason why
>>> the #else clause can't be applied to both.
>>
>> remove the early_panic?
>>
>
> Yes, remove the early_panic(). Andi didn't want to support the non-e820
> modes in x86-64, but if the code is unified there is no reason not to.
OK, after Ingo put three patch in the tip, I will submit one to remove
early_panic.
YH
Yinghai Lu wrote:
>
> OK, after Ingo put three patch in the tip, I will submit one to remove
> early_panic.
>
I'll do it after lunch if Ingo or Thomas don't beat me to it.
-hpa
* Yinghai Lu <[email protected]> wrote:
> and kill e820_32/64.c and e820_32/64.h
whee - applied :-)
Ingo
1. let 64bit support 88 and e801 too
2. introduce default_machine_specific_memory_setup, and reuse it
for voyager
Signed-off-by: Yinghai Lu <[email protected]>
---
arch/x86/kernel/e820.c | 13 +++++++------
arch/x86/mach-voyager/setup.c | 32 +-------------------------------
include/asm-x86/e820.h | 1 +
3 files changed, 9 insertions(+), 37 deletions(-)
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -1029,7 +1029,7 @@ void __init e820_reserve_resources(void)
}
}
-char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+char *__init default_machine_specific_memory_setup(void)
{
char *who = "BIOS-e820";
int new_nr;
@@ -1045,10 +1045,7 @@ char *__init __attribute__((weak)) machi
&new_nr);
boot_params.e820_entries = new_nr;
if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
-#ifdef CONFIG_X86_64
- early_panic("Cannot find a valid memory map");
-#else
- unsigned long mem_size;
+ u64 mem_size;
/* compare results from other methods and take the greater */
if (boot_params.alt_mem_k
@@ -1063,13 +1060,17 @@ char *__init __attribute__((weak)) machi
e820.nr_map = 0;
e820_add_region(0, LOWMEMSIZE(), E820_RAM);
e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
-#endif
}
/* In case someone cares... */
return who;
}
+char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+{
+ return default_machine_specific_memory_setup();
+}
+
/* Overridden in paravirt.c if CONFIG_PARAVIRT */
char * __init __attribute__((weak)) memory_setup(void)
{
Index: linux-2.6/arch/x86/mach-voyager/setup.c
===================================================================
--- linux-2.6.orig/arch/x86/mach-voyager/setup.c
+++ linux-2.6/arch/x86/mach-voyager/setup.c
@@ -104,35 +104,5 @@ char *__init machine_specific_memory_set
return who;
}
- who = "BIOS-e820";
-
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
- ARRAY_SIZE(boot_params.e820_map),
- &new_nr);
- boot_params.e820_entries = new_nr;
- if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
- < 0) {
- unsigned long mem_size;
-
- /* compare results from other methods and take the greater */
- if (boot_params.alt_mem_k < boot_params.screen_info.ext_mem_k) {
- mem_size = boot_params.screen_info.ext_mem_k;
- who = "BIOS-88";
- } else {
- mem_size = boot_params.alt_mem_k;
- who = "BIOS-e801";
- }
-
- e820.nr_map = 0;
- e820_add_region(0, LOWMEMSIZE(), E820_RAM);
- e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
- }
- return who;
+ return default_machine_specific_memory_setup();
}
Index: linux-2.6/include/asm-x86/e820.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820.h
+++ linux-2.6/include/asm-x86/e820.h
@@ -102,6 +102,7 @@ extern u64 e820_hole_size(u64 start, u64
extern void finish_e820_parsing(void);
extern void e820_reserve_resources(void);
extern void setup_memory_map(void);
+extern char *default_machine_specific_memory_setup(void);
extern char *machine_specific_memory_setup(void);
extern char *memory_setup(void);
1. let 64bit support 88 and e801 too
2. introduce default_machine_specific_memory_setup, and reuse it
for voyager
v2: fix 64 bit compiling
Signed-off-by: Yinghai Lu <[email protected]>
---
arch/x86/kernel/e820.c | 13 +++++++------
arch/x86/mach-voyager/setup.c | 32 +-------------------------------
include/asm-x86/e820.h | 3 +--
include/asm-x86/setup.h | 3 ++-
4 files changed, 11 insertions(+), 40 deletions(-)
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -1029,7 +1029,7 @@ void __init e820_reserve_resources(void)
}
}
-char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+char *__init default_machine_specific_memory_setup(void)
{
char *who = "BIOS-e820";
int new_nr;
@@ -1045,10 +1045,7 @@ char *__init __attribute__((weak)) machi
&new_nr);
boot_params.e820_entries = new_nr;
if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
-#ifdef CONFIG_X86_64
- early_panic("Cannot find a valid memory map");
-#else
- unsigned long mem_size;
+ u64 mem_size;
/* compare results from other methods and take the greater */
if (boot_params.alt_mem_k
@@ -1063,13 +1060,17 @@ char *__init __attribute__((weak)) machi
e820.nr_map = 0;
e820_add_region(0, LOWMEMSIZE(), E820_RAM);
e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
-#endif
}
/* In case someone cares... */
return who;
}
+char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+{
+ return default_machine_specific_memory_setup();
+}
+
/* Overridden in paravirt.c if CONFIG_PARAVIRT */
char * __init __attribute__((weak)) memory_setup(void)
{
Index: linux-2.6/arch/x86/mach-voyager/setup.c
===================================================================
--- linux-2.6.orig/arch/x86/mach-voyager/setup.c
+++ linux-2.6/arch/x86/mach-voyager/setup.c
@@ -104,35 +104,5 @@ char *__init machine_specific_memory_set
return who;
}
- who = "BIOS-e820";
-
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
- ARRAY_SIZE(boot_params.e820_map),
- &new_nr);
- boot_params.e820_entries = new_nr;
- if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries)
- < 0) {
- unsigned long mem_size;
-
- /* compare results from other methods and take the greater */
- if (boot_params.alt_mem_k < boot_params.screen_info.ext_mem_k) {
- mem_size = boot_params.screen_info.ext_mem_k;
- who = "BIOS-88";
- } else {
- mem_size = boot_params.alt_mem_k;
- who = "BIOS-e801";
- }
-
- e820.nr_map = 0;
- e820_add_region(0, LOWMEMSIZE(), E820_RAM);
- e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
- }
- return who;
+ return default_machine_specific_memory_setup();
}
Index: linux-2.6/include/asm-x86/e820.h
===================================================================
--- linux-2.6.orig/include/asm-x86/e820.h
+++ linux-2.6/include/asm-x86/e820.h
@@ -102,6 +102,7 @@ extern u64 e820_hole_size(u64 start, u64
extern void finish_e820_parsing(void);
extern void e820_reserve_resources(void);
extern void setup_memory_map(void);
+extern char *default_machine_specific_memory_setup(void);
extern char *machine_specific_memory_setup(void);
extern char *memory_setup(void);
@@ -116,9 +117,7 @@ extern char *memory_setup(void);
#ifdef __KERNEL__
#include <linux/ioport.h>
-#ifdef CONFIG_X86_32
#define HIGH_MEMORY (1024*1024)
-#endif
#endif /* __KERNEL__ */
#endif /* __ASM_E820_H */
Index: linux-2.6/include/asm-x86/setup.h
===================================================================
--- linux-2.6.orig/include/asm-x86/setup.h
+++ linux-2.6/include/asm-x86/setup.h
@@ -42,13 +42,14 @@ void vsmp_init(void);
*/
extern struct boot_params boot_params;
-#ifdef __i386__
/*
* Do NOT EVER look at the BIOS memory size location.
* It does not work on many machines.
*/
#define LOWMEMSIZE() (0x9f000)
+#ifdef __i386__
+
void __init i386_start_kernel(void);
extern unsigned long init_pg_tables_start;
* Yinghai Lu <[email protected]> wrote:
> 1. let 64bit support 88 and e801 too
> 2. introduce default_machine_specific_memory_setup, and reuse it
> for voyager
>
> v2: fix 64 bit compiling
applied to tip/x86/mpparse - thanks Yinghai.
Ingo