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MIPS: bootm: add support for LMB

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This is required for init ramdisk relocation and device tree
support.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Daniel Schwierzeck 2013-05-09 17:10:06 +02:00
parent c4b37847d3
commit f66cc1e348
2 changed files with 23 additions and 0 deletions
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2
arch/mips/include/asm/config.h
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@ -7,4 +7,6 @@
#ifndef _ASM_CONFIG_H_ #ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_ #define _ASM_CONFIG_H_
#define CONFIG_LMB
#endif #endif

21
arch/mips/lib/bootm.c
View file

@ -27,6 +27,27 @@ static int linux_env_idx;
static void linux_params_init(ulong start, char *commandline); static void linux_params_init(ulong start, char *commandline);
static void linux_env_set(char *env_name, char *env_val); static void linux_env_set(char *env_name, char *env_val);
static ulong arch_get_sp(void)
{
ulong ret;
__asm__ __volatile__("move %0, $sp" : "=r"(ret) : );
return ret;
}
void arch_lmb_reserve(struct lmb *lmb)
{
ulong sp;
sp = arch_get_sp();
debug("## Current stack ends at 0x%08lx\n", sp);
/* adjust sp by 4K to be safe */
sp -= 4096;
lmb_reserve(lmb, sp, CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp);
}
static void boot_prep_linux(bootm_headers_t *images) static void boot_prep_linux(bootm_headers_t *images)
{ {
char *commandline = getenv("bootargs"); char *commandline = getenv("bootargs");