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authorKamil Konieczny <k.konieczny@partner.samsung.com>2017-10-25 17:27:35 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2017-11-03 22:11:25 +0800
commitc2afad6c6105783a72a2f7b69834a489120a1a7c (patch)
tree1a3541f847009de42124e69bbf08b4878e678da5 /drivers/crypto/Kconfig
parente5e4090884cbd109dab00f1ff96b98f551e55445 (diff)
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crypto: s5p-sss - Add HASH support for Exynos
Add support for MD5, SHA1, SHA256 hash algorithms for Exynos HW. It uses the crypto framework asynchronous hash api. It is based on omap-sham.c driver. S5P has some HW differencies and is not implemented. Modifications in s5p-sss: - Add hash supporting structures and functions. - Modify irq handler to handle both aes and hash signals. - Resize resource end in probe if EXYNOS_HASH is enabled in Kconfig. - Add new copyright line and new author. - Tested on Odroid-U3 with Exynos 4412 CPU, kernel 4.13-rc6 with crypto run-time self test testmgr and with tcrypt module with: modprobe tcrypt sec=1 mode=N where N=402, 403, 404 (MD5, SHA1, SHA256). Modifications in drivers/crypto/Kconfig: - Add new CRYPTO_DEV_EXYNOS_HASH, depend on !EXYNOS_RNG and CRYPTO_DEV_S5P - Select sw algorithms MD5, SHA1 and SHA256 in EXYNOS_HASH as they are needed for fallback. Acked-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/Kconfig')
-rw-r--r--drivers/crypto/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 9f55be46a07d..47ec920d5b71 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -427,6 +427,20 @@ config CRYPTO_DEV_S5P
Select this to offload Samsung S5PV210 or S5PC110, Exynos from AES
algorithms execution.
+config CRYPTO_DEV_EXYNOS_HASH
+ bool "Support for Samsung Exynos HASH accelerator"
+ depends on CRYPTO_DEV_S5P
+ depends on !CRYPTO_DEV_EXYNOS_RNG && CRYPTO_DEV_EXYNOS_RNG!=m
+ select CRYPTO_SHA1
+ select CRYPTO_MD5
+ select CRYPTO_SHA256
+ help
+ Select this to offload Exynos from HASH MD5/SHA1/SHA256.
+ This will select software SHA1, MD5 and SHA256 as they are
+ needed for small and zero-size messages.
+ HASH algorithms will be disabled if EXYNOS_RNG
+ is enabled due to hw conflict.
+
config CRYPTO_DEV_NX
bool "Support for IBM PowerPC Nest (NX) cryptographic acceleration"
depends on PPC64