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 --- arch/mips/include/asm/config.h | 2 ++ arch/mips/lib/bootm.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+)
diff --git a/arch/mips/include/asm/config.h b/arch/mips/include/asm/config.h index 049c44e..36438be 100644 --- a/arch/mips/include/asm/config.h +++ b/arch/mips/include/asm/config.h @@ -21,4 +21,6 @@ #ifndef _ASM_CONFIG_H_ #define _ASM_CONFIG_H_
+#define CONFIG_LMB + #endif diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 5540477..1b0b06a 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -43,6 +43,27 @@ static int linux_env_idx; static void linux_params_init(ulong start, char *commandline); 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) { char *commandline = getenv("bootargs");