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authorGabor Juhos <juhosg@openwrt.org>2012-09-27 10:18:14 +0000
committerGabor Juhos <juhosg@openwrt.org>2012-09-27 10:18:14 +0000
commit80d2da9f0ffcc665ac7a383b571bc07574dd3aff (patch)
treea02dc02e5be1d4470336f733b6dc8e4d956427e1 /target/linux/ramips
parent4ea68a13e3195576ae87589b12f3a3639358fb5f (diff)
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ramips: allow to use custom code for memory size detection
SVN-Revision: 33570
Diffstat (limited to 'target/linux/ramips')
-rw-r--r--target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h1
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/common/setup.c18
2 files changed, 13 insertions, 6 deletions
diff --git a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h
index 111dd06407..bb6e12bf86 100644
--- a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h
+++ b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/common.h
@@ -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);
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/setup.c b/target/linux/ramips/files/arch/mips/ralink/common/setup.c
index 0d6b8d8c90..1af855e649 100644
--- a/target/linux/ramips/files/arch/mips/ralink/common/setup.c
+++ b/target/linux/ramips/files/arch/mips/ralink/common/setup.c
@@ -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);