diff options
| author | Shengyu Qu | 2023-08-09 21:11:32 +0800 |
|---|---|---|
| committer | Leo Yu-Chi Liang | 2023-08-10 10:58:12 +0800 |
| commit | 6419f8e9fdc63ee411e1f012d412f8ae17283432 (patch) | |
| tree | 5738ae924d5181bb1865c9ad13501138fe8f7316 /common/init | |
| parent | d365f6646aa4ecaabc58c07ecc432a3177f13138 (diff) | |
riscv: Add SPL_ZERO_MEM_BEFORE_USE implementation
Add the actual support code for SPL_ZERO_MEM_BEFORE_USE and remove
existing Starfive JH7110's L2 LIM clean code, since existing code has
following issues:
1. Each hart (in the middle of a function call) overwriting its own
stack and other harts' stacks.
(data-race and data-corruption)
2. Lottery winner hart can be doing "board_init_f_init_reserve",
while other harts are in the middle of zeroing L2 LIM.
(data-race)
Signed-off-by: Bo Gan <ganboing@gmail.com>
Signed-off-by: Shengyu Qu <wiagn233@outlook.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Diffstat (limited to 'common/init')
| -rw-r--r-- | common/init/board_init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/common/init/board_init.c b/common/init/board_init.c index 96ffb79a986..ab8c508ad83 100644 --- a/common/init/board_init.c +++ b/common/init/board_init.c @@ -162,6 +162,9 @@ void board_init_f_init_reserve(ulong base) #if CONFIG_VAL(SYS_MALLOC_F_LEN) /* go down one 'early malloc arena' */ gd->malloc_base = base; +#if CONFIG_IS_ENABLED(ZERO_MEM_BEFORE_USE) + memset((void *)base, '\0', CONFIG_VAL(SYS_MALLOC_F_LEN)); +#endif #endif if (CONFIG_IS_ENABLED(SYS_REPORT_STACK_F_USAGE)) |