[S] Change in coreboot[master]: vboot: Add VBOOT_ARMV8_CE_SHA256_ACCELERATION config

[Yidi Lin (Code Review)]

Attention is currently required from: Julius Werner, Yu-Ping Wu.

Yidi Lin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/72711 )

Change subject: vboot: Add VBOOT_ARMV8_CE_SHA256_ACCELERATION config
......................................................................

vboot: Add VBOOT_ARMV8_CE_SHA256_ACCELERATION config

Add Kconfig option for VBOOT_ARMV8_CE_SHA256_ACCELERATION, which will
use ARMv8 Crypto Extension for SHA256[1] instead of software
implementatin.

This will speed up firmware verification in verstage.

[1] https://crrev.com/c/4170144

BUG=b:263514393
TEST='calculating body hash (SHA2)' get 13 msecs improvement on Tentacruel.
Before:
 509:finished calculating body hash (SHA2)             161,548 (14,490)

After:
 509:finished calculating body hash (SHA2)             155,101 (1,187)

Change-Id: I02671338fd9e0deb5294dbb7c03528061edc18c4
Signed-off-by: Yidi Lin 
---
M src/security/vboot/Kconfig
M src/security/vboot/Makefile.inc
2 files changed, 34 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/11/72711/1

diff --git a/src/security/vboot/Kconfig b/src/security/vboot/Kconfig
index 9025979..af51083 100644
--- a/src/security/vboot/Kconfig
+++ b/src/security/vboot/Kconfig
@@ -291,6 +291,13 @@
      Use sha256msg1, sha256msg2, sha256rnds2 instruction to accelerate
      SHA hash calculation in vboot.

+config VBOOT_ARMV8_CE_SHA256_ACCELERATION
+	bool "Use ARMv8 Crypto Extension for sha256 hash calculation"
+	default n
+	depends on ARCH_ARM64
+	help
+	  Use ARMv8 Crypto Extension to accelerate SHA hash calculation in vboot.
+
 config VBOOT_DEFINE_WIDEVINE_COUNTERS
    bool
    default n
diff --git a/src/security/vboot/Makefile.inc b/src/security/vboot/Makefile.inc
index 8747e02..616e6c8 100644
--- a/src/security/vboot/Makefile.inc
+++ b/src/security/vboot/Makefile.inc
@@ -30,6 +30,7 @@
    EC_EFS="$(CONFIG_VBOOT_EC_EFS)" \
    X86_SHA_EXT="$(if $(CONFIG_ARCH_$(call toupper,$(1))_X86_32)$(CONFIG_ARCH_$(call toupper,$(1))_X86_64),$\
    		$(CONFIG_VBOOT_X86_SHA256_ACCELERATION))" \
+	SHA_ARMV8_CE="$(if $(CONFIG_ARCH_$(call toupper,$(1))_ARMV8_64),$$(CONFIG_VBOOT_ARMV8_CE_SHA256_ACCELERATION))" \
    $(MAKE) -C $(VBOOT_SOURCE) \
    	BUILD=$$(abspath $$(dir $$(VBOOT_LIB_$(1)))) \
    	V=$(V) \