diff options
| author | Angus Gratton <angus@redyak.com.au> | 2024-02-20 12:48:04 +1100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2024-03-08 10:38:35 +1100 |
| commit | 5fe99013b6a58d6743706c5d76a1dbad133c300a (patch) | |
| tree | fc5495bad18847e1ea9611cf7905c15b7a3f39e9 | |
| parent | bf68bb95f9774127a026845e286822ca83bcaa37 (diff) | |
stm32: Simplify D-cache clean and invalidate macros.
The inline functions that these are wrappers around already account for
cache line size.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
| -rw-r--r-- | ports/stm32/mpconfigboard_common.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/ports/stm32/mpconfigboard_common.h b/ports/stm32/mpconfigboard_common.h index 6d9ef8de3..16ee01b67 100644 --- a/ports/stm32/mpconfigboard_common.h +++ b/ports/stm32/mpconfigboard_common.h @@ -632,12 +632,12 @@ // D-cache clean/invalidate helpers #if __DCACHE_PRESENT == 1 -#define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) \ - (SCB_CleanInvalidateDCache_by_Addr((uint32_t *)((uint32_t)addr & ~0x1f), \ - ((uint32_t)((uint8_t *)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) -#define MP_HAL_CLEAN_DCACHE(addr, size) \ - (SCB_CleanDCache_by_Addr((uint32_t *)((uint32_t)addr & ~0x1f), \ - ((uint32_t)((uint8_t *)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) +// Note: The SCB_Clean<...> functions automatically align their arguments to cover full cache lines. +// CLEANINVALIDATE will write back (flush) any dirty lines in this region to RAM, then +// invalidate (evict) the whole region from the cache. +#define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) SCB_CleanInvalidateDCache_by_Addr((volatile void *)(addr), (size)) +// CLEAN will write back (flush) any dirty lines in this region to RAM. +#define MP_HAL_CLEAN_DCACHE(addr, size) SCB_CleanDCache_by_Addr((volatile void *)(addr), (size)) #else #define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) #define MP_HAL_CLEAN_DCACHE(addr, size) |