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ramips: allow to use custom code for memory size detection

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33570 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2012-09-27 10:18:14 +00:00
parent ea2de79f86
commit 4110f0d379
2 changed files with 13 additions and 6 deletions
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1
target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h
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@ -14,6 +14,7 @@ extern unsigned char ramips_sys_type[RAMIPS_SYS_TYPE_LEN];
extern unsigned long ramips_mem_base;
extern unsigned long ramips_mem_size_min;
extern unsigned long ramips_mem_size_max;
extern unsigned long (*ramips_get_mem_size)(void);
void ramips_intc_irq_init(unsigned intc_base, unsigned irq, unsigned irq_base);
u32 ramips_intc_get_status(void);

18
target/linux/ramips/files/arch/mips/ralink/common/setup.c
View File

@ -21,6 +21,7 @@
#include <asm/mach-ralink/machine.h>
unsigned char ramips_sys_type[RAMIPS_SYS_TYPE_LEN];
unsigned long (*ramips_get_mem_size)(void);
const char *get_system_type(void)
{
@ -30,13 +31,18 @@ const char *get_system_type(void)
static void __init detect_mem_size(void)
{
unsigned long size;
void *base;
base = (void *) KSEG1ADDR(detect_mem_size);
for (size = ramips_mem_size_min; size < ramips_mem_size_max;
size <<= 1 ) {
if (!memcmp(base, base + size, 1024))
break;
if (ramips_get_mem_size) {
size = ramips_get_mem_size();
} else {
void *base;
base = (void *) KSEG1ADDR(detect_mem_size);
for (size = ramips_mem_size_min; size < ramips_mem_size_max;
size <<= 1 ) {
if (!memcmp(base, base + size, 1024))
break;
}
}
add_memory_region(ramips_mem_base, size, BOOT_MEM_RAM);