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SECLIB-667: Accelerate SHA-256 with A64 crypto extensions

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Provide an additional pair of #defines, MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
and MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY. At most one of them may be
specified. If used, it is necessary to compile with -march=armv8-a+crypto.

The MBEDTLS_SHA256_PROCESS_ALT and MBEDTLS_SHA256_ALT mechanisms
continue to work, and are mutually exclusive with A64_CRYPTO.

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

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
This commit is contained in:
Tom Cosgrove 2022-02-20 22:25:31 +00:00
parent 9b545c04f7
commit f3ebd90a1c
6 changed files with 364 additions and 11 deletions
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5
tests/scripts/all.sh
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@ -1498,6 +1498,9 @@ component_build_module_alt () {
# The SpecifiedECDomain parsing code accesses mbedtls_ecp_group fields
# directly and assumes the implementation works with partial groups.
scripts/config.py unset MBEDTLS_PK_PARSE_EC_EXTENDED
# 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
# 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'
@ -2702,7 +2705,7 @@ component_build_armcc () {
armc6_build_test "--target=arm-arm-none-eabi -march=armv8-m.main"
# ARM Compiler 6 - Target ARMv8-A - AArch64
armc6_build_test "--target=aarch64-arm-none-eabi -march=armv8.2-a"
armc6_build_test "--target=aarch64-arm-none-eabi -march=armv8.2-a+crypto"
}
component_test_tls13 () {