crypto: xilinx - Add Xilinx SHA3 driver

This patch adds SHA3 driver support for the Xilinx ZynqMP SoC.
Xilinx ZynqMP SoC has SHA3 engine used for secure hash calculation.
The flow is
SHA3 request from Userspace -> SHA3 driver-> ZynqMp driver-> Firmware ->
SHA3 HW Engine

SHA3 HW engine in Xilinx ZynqMP SoC, does not support parallel processing
of 2 hash requests.
Therefore, software fallback is being used for init, update, final,
export and import in the ZynqMP SHA driver
For digest, the calculation of SHA3 hash is done by the hardened
SHA3 accelerator in Xilinx ZynqMP SoC.

Signed-off-by: Harsha <harsha.harsha@xilinx.com>
Signed-off-by: Kalyani Akula <kalyani.akula@xilinx.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 4f705674f94f..bf4e55e730aa 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -808,6 +808,16 @@ config CRYPTO_DEV_ZYNQMP_AES
 	  accelerator. Select this if you want to use the ZynqMP module
 	  for AES algorithms.
 
+config CRYPTO_DEV_ZYNQMP_SHA3
+	bool "Support for Xilinx ZynqMP SHA3 hardware accelerator"
+	depends on ARCH_ZYNQMP
+	select CRYPTO_SHA3
+	help
+	  Xilinx ZynqMP has SHA3 engine used for secure hash calculation.
+	  This driver interfaces with SHA3 hardware engine.
+	  Select this if you want to use the ZynqMP module
+	  for SHA3 hash computation.
+
 source "drivers/crypto/chelsio/Kconfig"
 
 source "drivers/crypto/virtio/Kconfig"