diff options
| author | Breno Lima | 2018-01-17 10:03:45 -0200 |
|---|---|---|
| committer | York Sun | 2018-01-23 11:21:20 -0800 |
| commit | d7af2baa49c60c097d77986f49d7c2db06080c8e (patch) | |
| tree | 327bddb0940eab3f21c1b0a22a15826594f16178 /common/hash.c | |
| parent | 6d48d1c4b45fe8d308c45115946a5730b102f3ab (diff) | |
crypto/fsl: Fix HW accelerated hash commands
The hash command function were not flushing the dcache before passing data
to CAAM/DMA and not invalidating the dcache when getting data back.
Due the data cache incoherency, HW accelerated hash commands used to fail
with CAAM errors like "Invalid KEY Command".
Check if pbuf and pout buffers are properly aligned to the cache line size
and flush/invalidate the memory regions to address this issue.
This solution is based in a previous work from Clemens Gruber in
commit 598e9dccc75d ("crypto/fsl: fix BLOB encapsulation and
decapsulation")
Reported-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'common/hash.c')
| -rw-r--r-- | common/hash.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/common/hash.c b/common/hash.c index cf4d70f852c..69d53ed251c 100644 --- a/common/hash.c +++ b/common/hash.c @@ -390,7 +390,7 @@ int hash_command(const char *algo_name, int flags, cmd_tbl_t *cmdtp, int flag, if (multi_hash()) { struct hash_algo *algo; - uint8_t output[HASH_MAX_DIGEST_SIZE]; + u8 *output; uint8_t vsum[HASH_MAX_DIGEST_SIZE]; void *buf; @@ -405,6 +405,9 @@ int hash_command(const char *algo_name, int flags, cmd_tbl_t *cmdtp, int flag, return 1; } + output = memalign(ARCH_DMA_MINALIGN, + sizeof(uint32_t) * HASH_MAX_DIGEST_SIZE); + buf = map_sysmem(addr, len); algo->hash_func_ws(buf, len, output, algo->chunk_size); unmap_sysmem(buf); @@ -440,6 +443,8 @@ int hash_command(const char *algo_name, int flags, cmd_tbl_t *cmdtp, int flag, store_result(algo, output, *argv, flags & HASH_FLAG_ENV); } + unmap_sysmem(output); + } /* Horrible code size hack for boards that just want crc32 */ |