Commit e2ae483c authored by Heinrich Schuchardt's avatar Heinrich Schuchardt 💬
Browse files

hash: Kconfig option for SHA512 hardware acceleration

Commit a479f103 ("hash: Allow for SHA512 hardware implementations")
defined function definitions for hardware accelerated SHA384 and SHA512.
If CONFIG_SHA_HW_ACCEL=y, these functions are used.

We already have boards using CONFIG_SHA_HW_ACCEL=y but none implements the
new functions hw_sha384() and hw_sha512().

For implementing the EFI TCG2 protocol we need SHA384 and SHA512. The
missing hardware acceleration functions lead to build errors on boards like
peach-pi_defconfig.

Introduce a new Kconfig symbol CONFIG_SHA512_HW_ACCEL to control if the
functions hw_sha384() and hw_sha512() shall be used to implement the SHA384
and SHA512 algorithms.

Fixes: a479f103

 ("hash: Allow for SHA512 hardware implementations")
Signed-off-by: Heinrich Schuchardt's avatarHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass's avatarSimon Glass <sjg@chromium.org>
parent 700f68c3
......@@ -260,12 +260,12 @@ static struct hash_algo hash_algo[] = {
.name = "sha384",
.digest_size = SHA384_SUM_LEN,
.chunk_size = CHUNKSZ_SHA384,
#ifdef CONFIG_SHA_HW_ACCEL
#ifdef CONFIG_SHA512_HW_ACCEL
.hash_func_ws = hw_sha384,
#else
.hash_func_ws = sha384_csum_wd,
#endif
#ifdef CONFIG_SHA_PROG_HW_ACCEL
#if defined(CONFIG_SHA512_HW_ACCEL) && defined(CONFIG_SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
......@@ -281,12 +281,12 @@ static struct hash_algo hash_algo[] = {
.name = "sha512",
.digest_size = SHA512_SUM_LEN,
.chunk_size = CHUNKSZ_SHA512,
#ifdef CONFIG_SHA_HW_ACCEL
#ifdef CONFIG_SHA512_HW_ACCEL
.hash_func_ws = hw_sha512,
#else
.hash_func_ws = sha512_csum_wd,
#endif
#ifdef CONFIG_SHA_PROG_HW_ACCEL
#if defined(CONFIG_SHA512_HW_ACCEL) && defined(CONFIG_SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
......
......@@ -389,21 +389,32 @@ config SHA384
(digest).
config SHA_HW_ACCEL
bool "Enable hashing using hardware"
bool "Enable hardware acceleration for SHA hash functions"
help
This option enables hardware acceleration for SHA hashing.
This affects the 'hash' command and also the hash_lookup_algo()
function.
This option enables hardware acceleration for the SHA1 and SHA256
hashing algorithms. This affects the 'hash' command and also the
hash_lookup_algo() function.
if SHA_HW_ACCEL
config SHA512_HW_ACCEL
bool "Enable hardware acceleration for SHA512"
depends on SHA512_ALGO
help
This option enables hardware acceleration for the SHA384 and SHA512
hashing algorithms. This affects the 'hash' command and also the
hash_lookup_algo() function.
config SHA_PROG_HW_ACCEL
bool "Enable Progressive hashing support using hardware"
depends on SHA_HW_ACCEL
help
This option enables hardware-acceleration for SHA progressive
hashing.
Data can be streamed in a block at a time and the hashing is
performed in hardware.
endif
config MD5
bool "Support MD5 algorithm"
help
......
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