blob: 01545afeb38cf28dd842ca4b0030e1702d70d6b3 [file] [log] [blame]
#
# Copyright (c) 2022, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
# Hash algorithm for measured boot
# SHA-256 (or stronger) is required.
# TODO: The measurement algorithm incorrectly suggests that the TPM backend
# is used which may not be the case. It is currently being worked on and
# soon TPM_HASH_ALG will be replaced by a more generic name.
TPM_HASH_ALG := sha256
ifeq (${TPM_HASH_ALG}, sha512)
MBOOT_ALG_ID := MBOOT_ALG_SHA512
MBOOT_DIGEST_SIZE := 64U
else ifeq (${TPM_HASH_ALG}, sha384)
MBOOT_ALG_ID := MBOOT_ALG_SHA384
MBOOT_DIGEST_SIZE := 48U
else
MBOOT_ALG_ID := MBOOT_ALG_SHA256
MBOOT_DIGEST_SIZE := 32U
endif #TPM_HASH_ALG
# Set definitions for Measured Boot driver.
$(eval $(call add_defines,\
$(sort \
MBOOT_ALG_ID \
MBOOT_DIGEST_SIZE \
MBOOT_RSS_BACKEND \
)))
MEASURED_BOOT_SRC_DIR := drivers/measured_boot/rss/
MEASURED_BOOT_SOURCES += ${MEASURED_BOOT_SRC_DIR}rss_measured_boot.c