1# 2# Copyright (c) 2015-2021, 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_BL2: indicates whether BL2 is needed by the platform 15# NEED_BL32: indicates whether BL32 is needed by the platform 16# BL2: image filename (optional). Default is IMG_BIN(2) (see macro IMG_BIN) 17# SCP_BL2: image filename (optional). Default is IMG_BIN(30) 18# BL31: image filename (optional). Default is IMG_BIN(31) 19# BL32: image filename (optional). Default is IMG_BIN(32) 20# BL33: image filename (optional). Default is IMG_BIN(33) 21# 22# Build options added by this file: 23# 24# KEY_ALG 25# KEY_SIZE 26# ROT_KEY 27# PROT_KEY 28# TRUSTED_WORLD_KEY 29# NON_TRUSTED_WORLD_KEY 30# SCP_BL2_KEY 31# BL31_KEY 32# BL32_KEY 33# BL33_KEY 34# 35 36# Certificate generation tool default parameters 37TRUSTED_KEY_CERT ?= ${BUILD_PLAT}/trusted_key.crt 38FWU_CERT := ${BUILD_PLAT}/fwu_cert.crt 39 40# Default non-volatile counter values (overridable by the platform) 41TFW_NVCTR_VAL ?= 0 42NTFW_NVCTR_VAL ?= 0 43 44# Pass the non-volatile counters to the cert_create tool 45$(eval $(call CERT_ADD_CMD_OPT,${TFW_NVCTR_VAL},--tfw-nvctr)) 46$(eval $(call CERT_ADD_CMD_OPT,${NTFW_NVCTR_VAL},--ntfw-nvctr)) 47 48# Add Trusted Key certificate to the fiptool and cert_create command line options 49$(eval $(call TOOL_ADD_PAYLOAD,${TRUSTED_KEY_CERT},--trusted-key-cert)) 50 51# Add fwu certificate to the fiptool and cert_create command line options 52$(eval $(call TOOL_ADD_PAYLOAD,${FWU_CERT},--fwu-cert,,FWU_)) 53 54# Add the keys to the cert_create command line options (private keys are NOT 55# packed in the FIP). Developers can use their own keys by specifying the proper 56# build option in the command line when building the Trusted Firmware 57$(if ${KEY_ALG},$(eval $(call CERT_ADD_CMD_OPT,${KEY_ALG},--key-alg))) 58$(if ${KEY_ALG},$(eval $(call CERT_ADD_CMD_OPT,${KEY_ALG},--key-alg,FWU_))) 59$(if ${KEY_SIZE},$(eval $(call CERT_ADD_CMD_OPT,${KEY_SIZE},--key-size))) 60$(if ${KEY_SIZE},$(eval $(call CERT_ADD_CMD_OPT,${KEY_SIZE},--key-size,FWU_))) 61$(if ${HASH_ALG},$(eval $(call CERT_ADD_CMD_OPT,${HASH_ALG},--hash-alg))) 62$(if ${HASH_ALG},$(eval $(call CERT_ADD_CMD_OPT,${HASH_ALG},--hash-alg,FWU_))) 63$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key))) 64$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key,FWU_))) 65$(if ${PROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${PROT_KEY},--prot-key))) 66$(if ${TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${TRUSTED_WORLD_KEY},--trusted-world-key))) 67$(if ${NON_TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${NON_TRUSTED_WORLD_KEY},--non-trusted-world-key))) 68 69 70# Add the BL2 CoT (image cert) 71ifeq (${NEED_BL2},yes) 72ifeq (${BL2_AT_EL3}, 0) 73$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert)) 74endif 75endif 76 77# Add the SCP_BL2 CoT (key cert + img cert) 78ifneq (${SCP_BL2},) 79 $(if ${SCP_BL2_KEY},$(eval $(call CERT_ADD_CMD_OPT,${SCP_BL2_KEY},--scp-fw-key))) 80 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_content.crt,--scp-fw-cert)) 81 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_key.crt,--scp-fw-key-cert)) 82endif 83 84ifeq (${ARCH},aarch64) 85ifeq (${NEED_BL31},yes) 86# Add the BL31 CoT (key cert + img cert) 87$(if ${BL31_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL31_KEY},--soc-fw-key))) 88$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_content.crt,--soc-fw-cert)) 89$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_key.crt,--soc-fw-key-cert)) 90endif 91endif 92 93# Add the BL32 CoT (key cert + img cert) 94ifeq (${NEED_BL32},yes) 95 $(if ${BL32_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL32_KEY},--tos-fw-key))) 96 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_content.crt,--tos-fw-cert)) 97 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_key.crt,--tos-fw-key-cert)) 98endif 99 100# Add the BL33 CoT (key cert + img cert) 101ifneq (${BL33},) 102 $(if ${BL33_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL33_KEY},--nt-fw-key))) 103 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_content.crt,--nt-fw-cert)) 104ifneq (${COT},dualroot) 105 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_key.crt,--nt-fw-key-cert)) 106endif 107endif 108 109# Add SiP owned Secure Partitions CoT (image cert) 110ifneq (${SP_LAYOUT_FILE},) 111 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/sip_sp_content.crt,--sip-sp-cert)) 112ifeq (${COT},dualroot) 113 $(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/plat_sp_content.crt,--plat-sp-cert)) 114endif 115endif 116