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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2016-11-20 14:42:01 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2016-11-28 14:58:05 +0300
commit7918ecef073fe80eeb399a37d8d48561864eedf1 (patch)
tree036a8a9af759569f280cfe1f8c604a7f07fb0c28 /arch/arm64/crypto/Makefile
parented424bb3680b6e6167a44c5c195ec8f9aea3ab3b (diff)
downloadlinux-7918ecef073fe80eeb399a37d8d48561864eedf1.tar.xz
crypto: arm64/sha2 - integrate OpenSSL implementations of SHA256/SHA512
This integrates both the accelerated scalar and the NEON implementations of SHA-224/256 as well as SHA-384/512 from the OpenSSL project. Relative performance compared to the respective generic C versions: | SHA256-scalar | SHA256-NEON* | SHA512 | ------------+-----------------+--------------+----------+ Cortex-A53 | 1.63x | 1.63x | 2.34x | Cortex-A57 | 1.43x | 1.59x | 1.95x | Cortex-A73 | 1.26x | 1.56x | ? | The core crypto code was authored by Andy Polyakov of the OpenSSL project, in collaboration with whom the upstream code was adapted so that this module can be built from the same version of sha512-armv8.pl. The version in this patch was taken from OpenSSL commit 32bbb62ea634 ("sha/asm/sha512-armv8.pl: fix big-endian support in __KERNEL__ case.") * The core SHA algorithm is fundamentally sequential, but there is a secondary transformation involved, called the schedule update, which can be performed independently. The NEON version of SHA-224/SHA-256 only implements this part of the algorithm using NEON instructions, the sequential part is always done using scalar instructions. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto/Makefile')
-rw-r--r--arch/arm64/crypto/Makefile17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/crypto/Makefile b/arch/arm64/crypto/Makefile
index abb79b3cfcfe..770786728082 100644
--- a/arch/arm64/crypto/Makefile
+++ b/arch/arm64/crypto/Makefile
@@ -29,6 +29,12 @@ aes-ce-blk-y := aes-glue-ce.o aes-ce.o
obj-$(CONFIG_CRYPTO_AES_ARM64_NEON_BLK) += aes-neon-blk.o
aes-neon-blk-y := aes-glue-neon.o aes-neon.o
+obj-$(CONFIG_CRYPTO_SHA256_ARM64) += sha256-arm64.o
+sha256-arm64-y := sha256-glue.o sha256-core.o
+
+obj-$(CONFIG_CRYPTO_SHA512_ARM64) += sha512-arm64.o
+sha512-arm64-y := sha512-glue.o sha512-core.o
+
AFLAGS_aes-ce.o := -DINTERLEAVE=4
AFLAGS_aes-neon.o := -DINTERLEAVE=4
@@ -40,3 +46,14 @@ CFLAGS_crc32-arm64.o := -mcpu=generic+crc
$(obj)/aes-glue-%.o: $(src)/aes-glue.c FORCE
$(call if_changed_rule,cc_o_c)
+
+quiet_cmd_perlasm = PERLASM $@
+ cmd_perlasm = $(PERL) $(<) void $(@)
+
+$(src)/sha256-core.S_shipped: $(src)/sha512-armv8.pl
+ $(call cmd,perlasm)
+
+$(src)/sha512-core.S_shipped: $(src)/sha512-armv8.pl
+ $(call cmd,perlasm)
+
+.PRECIOUS: $(obj)/sha256-core.S $(obj)/sha512-core.S