armv8 SHA-1 using ARMv8 Crypto Extensions:
This patch adds support for the SHA-1 Secure Hash Algorithm for CPUs
that have support for the SHA-1 part of the ARM v8 Crypto Extensions.
It greatly improves sha-1 based operations, about 10x faster on iMX8M
evk board. ~12ms vs ~165ms for a 20MiB kernel sha-1 verification.
asm implementation is a simplified version of the Linux version (from
Ard Biesheuvel).
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig
index 09f3f50..1768e67 100644
--- a/arch/arm/cpu/armv8/Kconfig
+++ b/arch/arm/cpu/armv8/Kconfig
@@ -185,4 +185,15 @@
Exception handling at all exception levels for External Abort and
SError interrupt exception are taken in EL3.
+menuconfig ARMV8_CRYPTO
+ bool "ARM64 Accelerated Cryptographic Algorithms"
+
+if ARMV8_CRYPTO
+
+config ARMV8_CE_SHA1
+ bool "SHA-1 digest algorithm (ARMv8 Crypto Extensions)"
+ default y if SHA1
+
+endif
+
endif