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authorNicolas Boichat <drinkcat@google.com>2017-06-22 10:34:39 +0800
committerchrome-bot <chrome-bot@chromium.org>2017-07-03 21:44:34 -0700
commitedc668ea6cca1d4f3e53c211406d6a8bf5fe6364 (patch)
tree6ee9dcc2fd49d6d34da4c108093ee322212823ce /common/build.mk
parent136a80e1138633c2f2ac249c15078b587af9c7ec (diff)
downloadchrome-ec-edc668ea6cca1d4f3e53c211406d6a8bf5fe6364.tar.gz
core/cortex-m0/curve25519: Integrate fast curve25519 implementation
- Move generic implementation to curve25519-generic.o - Always use optimized version on cortex-m0. - Rename .s files to .S, remove unnecessary lines in assembly files. - Rename crypto_scalarmult_curve25519 to x25519_scalar_mult to match the signature provided by the generic implementation. - Replace some handcoded memcpy with function calls - Remove unnecessary "volatile" specifications in the code. BRANCH=none BUG=b:62813194 TEST=To test old implementation only: - Increase CONFIG_RO_SIZE to 60kb - Increase console stack size to 2048 make BOARD=hammer PROJECT=x25519 TEST_BUILD=y ./util/flash_ec --board=hammer --image=build/hammer/x25519.bin EC console: runtest, taskinfo => Used to takes ~4'17" to run (X25519 duration 256347 us). 1496/2048 stack size usage in CONSOLE task => Now takes ~1'25" to run (X25519 duration 84520 us) 732/2048 stack size usage in CONSOLE task TEST=In test/x25519.c, uncomment #define TEST_X25519_1M_ITERATIONS make BOARD=hammer PROJECT=x25519 TEST_BUILD=y ./util/flash_ec --board=hammer --image=build/hammer/x25519.bin EC console: runtest, wait ~23 hours, test passes. TEST=- Define CONFIG_CURVE25519_CORTEXM0 (next patch) makes newsizes build/hammer/RW/ec.RW.flat shrank by 1888 bytes: (52208 to 50320) Change-Id: Icce38d3c32f431a85ac0f951cf34456b490dc665 Reviewed-on: https://chromium-review.googlesource.com/540962 Commit-Ready: Nicolas Boichat <drinkcat@chromium.org> Tested-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'common/build.mk')
-rw-r--r--common/build.mk3
1 files changed, 3 insertions, 0 deletions
diff --git a/common/build.mk b/common/build.mk
index 9954798988..7907a87e30 100644
--- a/common/build.mk
+++ b/common/build.mk
@@ -45,6 +45,9 @@ common-$(CONFIG_COMMON_RUNTIME)+=hooks.o main.o system.o
common-$(CONFIG_COMMON_TIMER)+=timer.o
common-$(CONFIG_CRC8)+= crc8.o
common-$(CONFIG_CURVE25519)+=curve25519.o
+ifneq ($(CORE),cortex-m0)
+common-$(CONFIG_CURVE25519)+=curve25519-generic.o
+endif
common-$(CONFIG_DEVICE_EVENT)+=device_event.o
common-$(CONFIG_DEVICE_STATE)+=device_state.o
common-$(CONFIG_DPTF)+=dptf.o