diff options
| author | Julius Werner <jwerner@chromium.org> | 2024-01-05 10:40:43 -0800 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2024-02-24 02:02:34 +0000 |
| commit | 366ceeef0f07d3962ee6e6a0f3151a7f438c97ed (patch) | |
| tree | 759b0461f6ecdcb046d14f1bdce340ecf1e85008 /payloads | |
| parent | c57b902f9ba65cdaaceec262e7abf5b240a51d26 (diff) | |
vboot: Enable new arm64 SIMD crypto acceleration
This patch passes the correct flag to vboot to enable SIMD crypto
acceleration on arm64 devices. This uses a core part of the ISA and
should thus be supported on all arm64 SoCs -- so we normally always
want it enabled, but there should still be a Kconfig in case a SoC wants
to use the hwcrypto interface for its own (off-CPU) crypto acceleration
engine instead. (You could also disable it to save a small amount of
code size at the cost of speed, if necessary.)
Change-Id: I3820bd6b7505202b7edb6768385ce5deb18777a4
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80710
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Diffstat (limited to 'payloads')
| -rw-r--r-- | payloads/libpayload/vboot/Kconfig | 12 | ||||
| -rw-r--r-- | payloads/libpayload/vboot/Makefile.mk | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/payloads/libpayload/vboot/Kconfig b/payloads/libpayload/vboot/Kconfig index 23d61f4e5e..6d71a7ca50 100644 --- a/payloads/libpayload/vboot/Kconfig +++ b/payloads/libpayload/vboot/Kconfig @@ -49,4 +49,16 @@ config VBOOT_SHA_ARMV8_CE help This option enables SHA256 implementation using ARMv8 Crypto Extension. +config VBOOT_ARM64_RSA_ACCELERATION + bool "Use arm64 SIMD instructions to accelerate RSA signature verification" + default y + depends on ARCH_ARM64 + help + Use arm64 SIMD instructions (NEON) to parallelize two multiplications + in the modulus exponentiation algorithm, which speeds up RSA signature + verification in vboot. This is supported on all arm64 CPUs so you'd + generally always want this enabled, unless your SoC is overriding + vboot's hwcrypto API with its own crypto accelerator IP instead (or + you're trying really hard to save on code size). + endif diff --git a/payloads/libpayload/vboot/Makefile.mk b/payloads/libpayload/vboot/Makefile.mk index bdc9ad2ad6..554fec864f 100644 --- a/payloads/libpayload/vboot/Makefile.mk +++ b/payloads/libpayload/vboot/Makefile.mk @@ -46,6 +46,7 @@ $(VBOOT_FW_LIB): $(obj)/libpayload-config.h X86_SHA_EXT=$(call kconfig-to-binary, $(CONFIG_LP_VBOOT_X86_SHA_EXT)) \ VB2_X86_RSA_ACCELERATION=$(call kconfig-to-binary, $(CONFIG_LP_VBOOT_X86_RSA_ACCELERATION)) \ ARMV8_CRYPTO_EXT=$(call kconfig-to-binary, $(CONFIG_LP_VBOOT_SHA_ARMV8_CE)) \ + ARM64_RSA_ACCELERATION=$(call kconfig-to-binary, $(CONFIG_LP_VBOOT_ARM64_RSA_ACCELERATION)) \ UNROLL_LOOPS=1 \ BUILD="$(VBOOT_BUILD_DIR)" \ V=$(V) \ |