SHA256 commands weren't giving desired output since the data we set in the memory addresses through mw.l commands was not getting updated in actual memory. Adding this patch resolves the issue.
TEST=sha256 0x40008000 0x2B 0x40009000 Used mm and md to write a standard string to memory location 0x40008000 and ran the above command to verify the output.
Signed-off-by: Ajay Kumar ajaykumar.rs@samsung.com Signed-off-by: Akshay Saraswat akshay.s@samsung.com --- arch/arm/cpu/armv7/exynos/ace_sha.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm/cpu/armv7/exynos/ace_sha.c b/arch/arm/cpu/armv7/exynos/ace_sha.c index 2715a03..9ac34be 100644 --- a/arch/arm/cpu/armv7/exynos/ace_sha.c +++ b/arch/arm/cpu/armv7/exynos/ace_sha.c @@ -51,6 +51,11 @@ int ace_sha_hash_digest( struct exynos_ace_sfr *ace_sha_reg = (struct exynos_ace_sfr *) samsung_get_base_ace_sfr();
+ /* Flush input and output memory buffers berore starting DMA */ + flush_dcache_range((unsigned long) pout, (unsigned long)(pout + 0x20)); + flush_dcache_range((unsigned long) pbuf, + (unsigned long)(pbuf + buf_len)); + if (buf_len == 0) { /* ACE H/W cannot compute hash value for empty string */ if (hash_type == ACE_SHA_TYPE_SHA1)