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| author | Chen Liqin <liqin.chen@sunplusct.com> | 2009-08-30 12:31:58 +0800 |
|---|---|---|
| committer | Chen Liqin <liqin.chen@sunplusct.com> | 2009-08-30 12:31:58 +0800 |
| commit | 324f40fbb02ed9339ddbdc450ff8ba614a92a630 (patch) | |
| tree | ee25761ee677ad2558ef9a9fdb721eb6bdb8febd /arch | |
| parent | ffa818b4b099f65b6cb74750bdb979061716e020 (diff) | |
| download | linux-3.10-324f40fbb02ed9339ddbdc450ff8ba614a92a630.tar.gz linux-3.10-324f40fbb02ed9339ddbdc450ff8ba614a92a630.tar.bz2 linux-3.10-324f40fbb02ed9339ddbdc450ff8ba614a92a630.zip | |
score: add MEMORY_START and MEMORY_SIZE define, to make the code clear
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/score/include/asm/setup.h | 3 | ||||
| -rw-r--r-- | arch/score/kernel/setup.c | 32 |
2 files changed, 19 insertions, 16 deletions
diff --git a/arch/score/include/asm/setup.h b/arch/score/include/asm/setup.h index de89eff98da..3cb944dc68d 100644 --- a/arch/score/include/asm/setup.h +++ b/arch/score/include/asm/setup.h @@ -2,7 +2,8 @@ #define _ASM_SCORE_SETUP_H #define COMMAND_LINE_SIZE 256 -#define MEM_SIZE 0x2000000 +#define MEMORY_START 0 +#define MEMORY_SIZE 0x2000000 #ifdef __KERNEL__ diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c index a172ce170f6..6a2503c75c4 100644 --- a/arch/score/kernel/setup.c +++ b/arch/score/kernel/setup.c @@ -26,10 +26,12 @@ #include <linux/bootmem.h> #include <linux/initrd.h> #include <linux/ioport.h> +#include <linux/mm.h> #include <linux/seq_file.h> #include <linux/screen_info.h> #include <asm-generic/sections.h> +#include <asm/setup.h> struct screen_info screen_info; unsigned long kernelsp; @@ -40,25 +42,25 @@ static struct resource data_resource = { .name = "Kernel data",}; static void __init bootmem_init(void) { - unsigned long reserved_end, bootmap_size; + unsigned long start_pfn, bootmap_size; unsigned long size = initrd_end - initrd_start; - reserved_end = (unsigned long)_end; + start_pfn = PFN_UP(__pa(&_end)); - min_low_pfn = 0; - max_low_pfn = MEM_SIZE / PAGE_SIZE; + min_low_pfn = PFN_UP(MEMORY_START); + max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE); /* Initialize the boot-time allocator with low memory only. */ - bootmap_size = init_bootmem_node(NODE_DATA(0), reserved_end, + bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn, min_low_pfn, max_low_pfn); add_active_range(0, min_low_pfn, max_low_pfn); - free_bootmem(PFN_PHYS(reserved_end), - (max_low_pfn - reserved_end) << PAGE_SHIFT); - memory_present(0, reserved_end, max_low_pfn); + free_bootmem(PFN_PHYS(start_pfn), + (max_low_pfn - start_pfn) << PAGE_SHIFT); + memory_present(0, start_pfn, max_low_pfn); /* Reserve space for the bootmem bitmap. */ - reserve_bootmem(PFN_PHYS(reserved_end), bootmap_size, BOOTMEM_DEFAULT); + reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT); if (size == 0) { printk(KERN_INFO "Initrd not found or empty"); @@ -87,15 +89,15 @@ static void __init resource_init(void) { struct resource *res; - code_resource.start = (unsigned long)_text; - code_resource.end = (unsigned long)_etext - 1; - data_resource.start = (unsigned long)_etext; - data_resource.end = (unsigned long)_edata - 1; + code_resource.start = __pa(&_text); + code_resource.end = __pa(&_etext) - 1; + data_resource.start = __pa(&_etext); + data_resource.end = __pa(&_edata) - 1; res = alloc_bootmem(sizeof(struct resource)); res->name = "System RAM"; - res->start = 0; - res->end = MEM_SIZE - 1; + res->start = MEMORY_START; + res->end = MEMORY_START + MEMORY_SIZE - 1; res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; request_resource(&iomem_resource, res); |