1# 2# Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. 3# 4# SPDX-License-Identifier: BSD-3-Clause 5# 6 7# This file defines the keys and certificates that must be created to establish 8# a Chain of Trust following the TBBR document. These definitions include the 9# command line options passed to the cert_create and fiptool commands. 10# 11# Expected environment: 12# 13# BUILD_PLAT: output directory 14# NEED_BL32: indicates whether BL32 is needed by the platform 15# BL2: image filename (optional). Default is IMG_BIN(2) (see macro IMG_BIN) 16# SCP_BL2: image filename (optional). Default is IMG_BIN(30) 17# BL31: image filename (optional). Default is IMG_BIN(31) 18# BL32: image filename (optional). Default is IMG_BIN(32) 19# BL33: image filename (optional). Default is IMG_BIN(33) 20# 21# Build options added by this file: 22# 23# KEY_ALG 24# ROT_KEY 25# TRUSTED_WORLD_KEY 26# NON_TRUSTED_WORLD_KEY 27# SCP_BL2_KEY 28# BL31_KEY 29# BL32_KEY 30# BL33_KEY 31# 32 33# Certificate generation tool default parameters 34TRUSTED_KEY_CERT := ${BUILD_PLAT}/trusted_key.crt 35FWU_CERT := ${BUILD_PLAT}/fwu_cert.crt 36 37# Default non-volatile counter values (overridable by the platform) 38TFW_NVCTR_VAL ?= 0 39NTFW_NVCTR_VAL ?= 0 40 41# Pass the non-volatile counters to the cert_create tool 42$(eval $(call CERT_ADD_CMD_OPT,${TFW_NVCTR_VAL},--tfw-nvctr)) 43$(eval $(call CERT_ADD_CMD_OPT,${NTFW_NVCTR_VAL},--ntfw-nvctr)) 44 45# Add Trusted Key certificate to the fiptool and cert_create command line options 46$(eval $(call TOOL_ADD_PAYLOAD,${TRUSTED_KEY_CERT},--trusted-key-cert)) 47 48# Add fwu certificate to the fiptool and cert_create command line options 49$(eval $(call TOOL_ADD_PAYLOAD,${FWU_CERT},--fwu-cert,,FWU_)) 50 51# Add the keys to the cert_create command line options (private keys are NOT 52# packed in the FIP). Developers can use their own keys by specifying the proper 53# build option in the command line when building the Trusted Firmware 54$(if ${KEY_ALG},$(eval $(call CERT_ADD_CMD_OPT,${KEY_ALG},--key-alg))) 55$(if ${HASH_ALG},$(eval $(call CERT_ADD_CMD_OPT,${HASH_ALG},--hash-alg))) 56$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key))) 57$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key,FWU_))) 58$(if ${TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${TRUSTED_WORLD_KEY},--trusted-world-key))) 59$(if ${NON_TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${NON_TRUSTED_WORLD_KEY},--non-trusted-world-key))) 60 61 62# Add the BL2 CoT (image cert) 63ifeq (${BL2_AT_EL3}, 0) 64$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert)) 65endif 66 67# Add the SCP_BL2 CoT (key cert + img cert) 68ifneq (${SCP_BL2},) 69 $(if ${SCP_BL2_KEY},$(eval $(call CERT_ADD_CMD_OPT,${SCP_BL2_KEY},--scp-fw-key))) 70 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_content.crt,--scp-fw-cert)) 71 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_key.crt,--scp-fw-key-cert)) 72endif 73 74ifeq (${ARCH},aarch64) 75ifeq (${NEED_BL31},yes) 76# Add the BL31 CoT (key cert + img cert) 77$(if ${BL31_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL31_KEY},--soc-fw-key))) 78$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_content.crt,--soc-fw-cert)) 79$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_key.crt,--soc-fw-key-cert)) 80endif 81endif 82 83# Add the BL32 CoT (key cert + img cert) 84ifeq (${NEED_BL32},yes) 85 $(if ${BL32_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL32_KEY},--tos-fw-key))) 86 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_content.crt,--tos-fw-cert)) 87 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_key.crt,--tos-fw-key-cert)) 88endif 89 90# Add the BL33 CoT (key cert + img cert) 91ifneq (${BL33},) 92 $(if ${BL33_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL33_KEY},--nt-fw-key))) 93 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_content.crt,--nt-fw-cert)) 94 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_key.crt,--nt-fw-key-cert)) 95endif 96