diff options
author | Ji Luo <ji.luo@nxp.com> | 2018-12-20 15:33:26 +0800 |
---|---|---|
committer | Ji Luo <ji.luo@nxp.com> | 2018-12-24 09:14:31 +0800 |
commit | de975d8500dc9423d10faf8c8290f6463662144c (patch) | |
tree | f5271186a9c1234a1be789300d53d24593fabec2 /lib | |
parent | 68261e4ca35d6b5eaa0c75a0579ec59d8c6f4503 (diff) |
MA-13831-3 [trusty] Add command to generate rng with CAAM
Add new hwcrypto command to support rng generation with CAAM.
Test: rng generated on imx8qxp_mek.
Change-Id: I756f3e99423f0f9dfc2bcd30117a3f96e9f5f2f7
Signed-off-by: Ji Luo <ji.luo@nxp.com>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/trusty/ql-tipc/hwcrypto.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/trusty/ql-tipc/hwcrypto.c b/lib/trusty/ql-tipc/hwcrypto.c index 02b7b198eb..ccaf18b427 100644 --- a/lib/trusty/ql-tipc/hwcrypto.c +++ b/lib/trusty/ql-tipc/hwcrypto.c @@ -218,3 +218,25 @@ int hwcrypto_gen_blob(uint32_t plain_pa, sizeof(req), NULL, 0, false); return rc; } + +int hwcrypto_gen_rng(uint32_t buf, uint32_t len) +{ + hwcrypto_rng_msg req; + unsigned long start, end; + + /* check the address */ + if (buf == 0) + return TRUSTY_ERR_INVALID_ARGS; + /* fill the request buffer */ + req.buf = buf; + req.len = len; + + /* invalidate dcache for output buffer */ + start = (unsigned long)buf & ~(ARCH_DMA_MINALIGN - 1); + end = ALIGN((unsigned long)buf + len, ARCH_DMA_MINALIGN); + invalidate_dcache_range(start, end); + + int rc = hwcrypto_do_tipc(HWCRYPTO_GEN_RNG, (void*)&req, + sizeof(req), NULL, 0, false); + return rc; +} |