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authorChen Liqin <liqin.chen@sunplusct.com>2009-08-30 12:31:58 +0800
committerChen Liqin <liqin.chen@sunplusct.com>2009-08-30 12:31:58 +0800
commit324f40fbb02ed9339ddbdc450ff8ba614a92a630 (patch)
treeee25761ee677ad2558ef9a9fdb721eb6bdb8febd /arch/score
parentffa818b4b099f65b6cb74750bdb979061716e020 (diff)
downloadblackbird-op-linux-324f40fbb02ed9339ddbdc450ff8ba614a92a630.tar.gz
blackbird-op-linux-324f40fbb02ed9339ddbdc450ff8ba614a92a630.zip
score: add MEMORY_START and MEMORY_SIZE define, to make the code clear
Diffstat (limited to 'arch/score')
-rw-r--r--arch/score/include/asm/setup.h3
-rw-r--r--arch/score/kernel/setup.c32
2 files changed, 19 insertions, 16 deletions
diff --git a/arch/score/include/asm/setup.h b/arch/score/include/asm/setup.h
index de89eff98dae..3cb944dc68dc 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 a172ce170f62..6a2503c75c4e 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);
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