diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 11 |
1 files changed, 9 insertions, 2 deletions
@@ -840,11 +840,18 @@ ${TLCL_OBJS}: CFLAGS += -DTPM_BLOCKING_CONTINUESELFTEST # CFLAGS += -DTPM_MANUAL_SELFTEST +# NOTE: UNROLL_LOOPS *only* affects SHA256, *not* SHA512. This seems to have +# been a conscious decision at some point (see b/35501356) but whether it still +# holds up in all situations on all architectures today might need to be +# reevaluated. For now, since we currently always use SHA256 for (non-recovery) +# kernel bodies and don't unroll loops for firmware verification, it's not very +# relevant in practice. To unroll SHA512, UNROLL_LOOPS_SHA512 would need to be +# defined. ifneq ($(filter-out 0,$(UNROLL_LOOPS)),) -$(info vboot hash algos built with unrolled loops (faster, larger code size)) +$(info vboot SHA256 built with unrolled loops (faster, larger code size)) CFLAGS += -DUNROLL_LOOPS else -$(info vboot hash algos built with tight loops (slower, smaller code size)) +$(info vboot SHA256 built with tight loops (slower, smaller code size)) endif .PHONY: fwlib |