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MIPS: add support for CONFIG_SYS_INIT_SP_ADDR

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Support the existing config option CONFIG_SYS_INIT_SP_ADDR on
MIPS. This allows to move the initial stack to other places
than the beginning of RAM.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Daniel Schwierzeck 2015-01-18 22:18:38 +01:00
parent 9d638eeab7
commit dd82128ef5
2 changed files with 12 additions and 2 deletions
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7
arch/mips/cpu/mips32/start.S
View File

@ -15,6 +15,11 @@
#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
#endif
#ifndef CONFIG_SYS_INIT_SP_ADDR
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
CONFIG_SYS_INIT_SP_OFFSET)
#endif
/*
* For the moment disable interrupts, mark the kernel mode and
* set ST0_KX so that the CPU does not spit fire when using
@ -135,7 +140,7 @@ reset:
#endif
/* Set up temporary stack */
li sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
li sp, CONFIG_SYS_INIT_SP_ADDR
move fp, sp
la t9, board_init_f

7
arch/mips/cpu/mips64/start.S
View File

@ -15,6 +15,11 @@
#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
#endif
#ifndef CONFIG_SYS_INIT_SP_ADDR
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
CONFIG_SYS_INIT_SP_OFFSET)
#endif
#ifdef CONFIG_SYS_LITTLE_ENDIAN
#define MIPS64_R_INFO(ssym, r_type3, r_type2, r_type) \
(((r_type) << 24) | ((r_type2) << 16) | ((r_type3) << 8) | (ssym))
@ -129,7 +134,7 @@ reset:
#endif
/* Set up temporary stack */
dli sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
dli sp, CONFIG_SYS_INIT_SP_ADDR
move fp, sp
dla t9, board_init_f