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authorFabien DESSENNE <fabien.dessenne@st.com>2017-03-21 16:13:28 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2017-04-05 21:58:33 +0800
commitb51dbe90912a0ce0c78717d2a8374af80b18ed11 (patch)
tree8291565588ac7913bbac172ebfb9caf85f3171f4 /drivers/crypto/stm32/Kconfig
parentdt-bindings: Document STM32 CRC bindings (diff)
downloadlinux-dev-b51dbe90912a0ce0c78717d2a8374af80b18ed11.tar.xz
linux-dev-b51dbe90912a0ce0c78717d2a8374af80b18ed11.zip
crypto: stm32 - Support for STM32 CRC32 crypto module
This module registers a CRC32 ("Ethernet") and a CRC32C (Castagnoli) algorithm that make use of the STMicroelectronics STM32 crypto hardware. Theses algorithms are compatible with the little-endian generic ones. Both algorithms use ~0 as default seed (key). With CRC32C the output is xored with ~0. Using TCRYPT CRC32C speed test, this shows up to 900% speedup compared to the crc32c-generic algorithm. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/stm32/Kconfig')
-rw-r--r--drivers/crypto/stm32/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/crypto/stm32/Kconfig b/drivers/crypto/stm32/Kconfig
new file mode 100644
index 000000000000..09b4ec87c212
--- /dev/null
+++ b/drivers/crypto/stm32/Kconfig
@@ -0,0 +1,7 @@
+config CRYPTO_DEV_STM32
+ tristate "Support for STM32 crypto accelerators"
+ depends on ARCH_STM32
+ select CRYPTO_HASH
+ help
+ This enables support for the CRC32 hw accelerator which can be found
+ on STMicroelectronis STM32 SOC.