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SECLIB-667: Accelerate SHA-512 with A64 crypto extensions

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Provide an additional pair of #defines, MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
and MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY. At most one of them may be
specified. If used, it is necessary to compile with -march=armv8.2-a+sha3.

The MBEDTLS_SHA512_PROCESS_ALT and MBEDTLS_SHA512_ALT mechanisms
continue to work, and are mutually exclusive with SHA512_USE_A64_CRYPTO.

There should be minimal code size impact if no A64_CRYPTO option is set.

The SHA-512 implementation was originally written by Simon Tatham for PuTTY,
under the MIT licence; dual-licensed as Apache 2 with his kind permission.

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
This commit is contained in:
Tom Cosgrove
2022-03-15 10:51:52 +00:00
parent 5e4bf95d09
commit 87fbfb5d82
6 changed files with 549 additions and 12 deletions
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8
tests/scripts/all.sh
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@ -1558,6 +1558,9 @@ component_build_module_alt () {
# MBEDTLS_SHA256_*ALT can't be used with MBEDTLS_SHA256_USE_A64_CRYPTO_*
scripts/config.py unset MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
scripts/config.py unset MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
# MBEDTLS_SHA512_*ALT can't be used with MBEDTLS_SHA512_USE_A64_CRYPTO_*
scripts/config.py unset MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
scripts/config.py unset MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY
# Enable all MBEDTLS_XXX_ALT for whole modules. Do not enable
# MBEDTLS_XXX_YYY_ALT which are for single functions.
scripts/config.py set-all 'MBEDTLS_([A-Z0-9]*|NIST_KW)_ALT'
@ -2742,6 +2745,9 @@ component_build_arm_none_eabi_gcc_no_64bit_multiplication () {
component_build_armcc () {
msg "build: ARM Compiler 5"
scripts/config.py baremetal
# armc[56] don't support SHA-512 intrinsics
scripts/config.py unset MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
make CC="$ARMC5_CC" AR="$ARMC5_AR" WARNING_CFLAGS='--strict --c99' lib
msg "size: ARM Compiler 5"
@ -2761,7 +2767,7 @@ component_build_armcc () {
# ARM Compiler 6 - Target ARMv8-M
armc6_build_test "--target=arm-arm-none-eabi -march=armv8-m.main"
# ARM Compiler 6 - Target ARMv8-A - AArch64
# ARM Compiler 6 - Target ARMv8.2-A - AArch64
armc6_build_test "--target=aarch64-arm-none-eabi -march=armv8.2-a+crypto"
}