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| author | Tetsuyuki Kobayashi <koba@kmckk.co.jp> | 2012-07-06 21:14:20 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 14:58:22 +0200 |
| commit | 6f0dba85a92b55f67a3610241060caaa41b5939e (patch) | |
| tree | e0bbc888c5d401a3661023bb736657cdaf3b637a /arch | |
| parent | cca60769fc46ed27edbcb915f95351e6bb577ee0 (diff) | |
| download | u-boot-6f0dba85a92b55f67a3610241060caaa41b5939e.tar.gz u-boot-6f0dba85a92b55f67a3610241060caaa41b5939e.tar.xz u-boot-6f0dba85a92b55f67a3610241060caaa41b5939e.zip | |
arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0
save_boot_params_default() in cpu.c accesses uninitialized stack area
when it compiled with -O0 (not optimized).
This patch removes save_boot_params_default() and put the equivalent in start.S
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Acked-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/cpu.c | 7 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/start.S | 14 |
2 files changed, 14 insertions, 7 deletions
diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index f01989fbf5..39a80237cd 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -38,13 +38,6 @@ #include <asm/armv7.h> #include <linux/compiler.h> -void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) -{ -} - -void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) - __attribute__((weak, alias("save_boot_params_default"))); - void __weak cpu_cache_initialization(void){} int cleanup_before_linux(void) diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index b06bafde91..32658eb7a5 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -305,6 +305,20 @@ ENDPROC(relocate_code) /************************************************************************* * + * void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) + * __attribute__((weak)); + * + * Stack pointer is not yet initialized at this moment + * Don't save anything to stack even if compiled with -O0 + * + *************************************************************************/ +ENTRY(save_boot_params) + bx lr @ back to my caller +ENDPROC(save_boot_params) + .weak save_boot_params + +/************************************************************************* + * * cpu_init_cp15 * * Setup CP15 registers (cache, MMU, TLBs). The I-cache is turned on unless |