crypto: sa2ul - Add crypto driver

Adds a basic crypto driver and currently supports AES/3DES
in cbc mode for both encryption and decryption.

Signed-off-by: Keerthy <[email protected]>
[[email protected]: major re-work to fix various bugs in the driver and to
 cleanup the code]
Signed-off-by: Tero Kristo <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: Keerthyj

drivers/crypto/Kconfig

@@ -866,4 +866,18 @@ source "drivers/crypto/hisilicon/Kconfig"
 
 source "drivers/crypto/amlogic/Kconfig"
 
+config CRYPTO_DEV_SA2UL
+	tristate "Support for TI security accelerator"
+	depends on ARCH_K3 || COMPILE_TEST
+	select ARM64_CRYPTO
+	select CRYPTO_AES
+	select CRYPTO_AES_ARM64
+	select CRYPTO_ALGAPI
+	select HW_RANDOM
+	select SG_SPLIT
+	help
+	  K3 devices include a security accelerator engine that may be
+	  used for crypto offload.  Select this if you want to use hardware
+	  acceleration for cryptographic algorithms on these devices.
+
 endif # CRYPTO_HW

drivers/crypto/Makefile

@@ -38,6 +38,7 @@ obj-$(CONFIG_CRYPTO_DEV_QCE) += qce/
 obj-$(CONFIG_CRYPTO_DEV_QCOM_RNG) += qcom-rng.o
 obj-$(CONFIG_CRYPTO_DEV_ROCKCHIP) += rockchip/
 obj-$(CONFIG_CRYPTO_DEV_S5P) += s5p-sss.o
+obj-$(CONFIG_CRYPTO_DEV_SA2UL) += sa2ul.o
 obj-$(CONFIG_CRYPTO_DEV_SAHARA) += sahara.o
 obj-$(CONFIG_ARCH_STM32) += stm32/
 obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o