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libpayload: armv7: Add cache control function to invalidate range.

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When dealing with DMA, we need a function to invalidate cache without corrupting
contents on main memory (clean).

BUG=none
TEST=emerge-peach_pit libpayload
BRANC=NONE

Change-Id: I28e632ae57a7b7ed1accee74e76045b92f92a699
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/61078
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
This commit is contained in:
Hung-Te Lin 2013-07-08 12:27:13 +08:00 • committed by ChromeBot
commit a3b4cd8d22
2 changed files with 12 additions and 0 deletions
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3
payloads/libpayload/include/armv7/arch/cache.h
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@ -266,6 +266,9 @@ void dcache_clean_by_mva(unsigned long addr, unsigned long len);
/* dcache clean and invalidate by modified virtual address to PoC */
void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len);
/* dcache invalidate by modified virtual address to PoC */
void dcache_invalidate_by_mva(unsigned long addr, unsigned long len);
/* dcache invalidate all (on current level given by CCSELR) */
void dcache_invalidate_all(void);