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140 lines
5.3 KiB
140 lines
5.3 KiB
#
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# Copyright (c) 2015-2023, ARM Limited and Contributors. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# This file defines the keys and certificates that must be created to establish
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# a Chain of Trust following the TBBR document. These definitions include the
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# command line options passed to the cert_create and fiptool commands.
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#
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# Expected environment:
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#
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# BUILD_PLAT: output directory
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# NEED_BL2: indicates whether BL2 is needed by the platform
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# NEED_BL32: indicates whether BL32 is needed by the platform
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# BL2: image filename (optional). Default is IMG_BIN(2) (see macro IMG_BIN)
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# SCP_BL2: image filename (optional). Default is IMG_BIN(30)
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# BL31: image filename (optional). Default is IMG_BIN(31)
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# BL32: image filename (optional). Default is IMG_BIN(32)
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# BL33: image filename (optional). Default is IMG_BIN(33)
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#
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# Build options added by this file:
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#
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# KEY_ALG
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# KEY_SIZE
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# ROT_KEY
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# PROT_KEY
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# PLAT_KEY
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# SWD_ROT_KEY
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# CORE_SWD_KEY
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# TRUSTED_WORLD_KEY
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# NON_TRUSTED_WORLD_KEY
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# SCP_BL2_KEY
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# BL31_KEY
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# BL32_KEY
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# BL33_KEY
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#
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# Certificate generation tool default parameters
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TRUSTED_KEY_CERT ?= ${BUILD_PLAT}/trusted_key.crt
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FWU_CERT := ${BUILD_PLAT}/fwu_cert.crt
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# Default non-volatile counter values (overridable by the platform)
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TFW_NVCTR_VAL ?= 0
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NTFW_NVCTR_VAL ?= 0
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# Pass the non-volatile counters to the cert_create tool
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$(eval $(call CERT_ADD_CMD_OPT,${TFW_NVCTR_VAL},--tfw-nvctr))
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$(eval $(call CERT_ADD_CMD_OPT,${NTFW_NVCTR_VAL},--ntfw-nvctr))
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# Add Trusted Key certificate to the fiptool and cert_create command line options
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ifneq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${TRUSTED_KEY_CERT},--trusted-key-cert))
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else
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/cca.crt,--cca-cert))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/core-swd.crt,--core-swd-cert))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/plat-key.crt,--plat-key-cert))
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endif
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# Add fwu certificate to the fiptool and cert_create command line options
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ifneq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${FWU_CERT},--fwu-cert,,FWU_))
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endif
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# Add the keys to the cert_create command line options (private keys are NOT
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# packed in the FIP). Developers can use their own keys by specifying the proper
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# build option in the command line when building the Trusted Firmware
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$(if ${KEY_ALG},$(eval $(call CERT_ADD_CMD_OPT,${KEY_ALG},--key-alg)))
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$(if ${KEY_ALG},$(eval $(call CERT_ADD_CMD_OPT,${KEY_ALG},--key-alg,FWU_)))
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$(if ${KEY_SIZE},$(eval $(call CERT_ADD_CMD_OPT,${KEY_SIZE},--key-size)))
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$(if ${KEY_SIZE},$(eval $(call CERT_ADD_CMD_OPT,${KEY_SIZE},--key-size,FWU_)))
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$(if ${HASH_ALG},$(eval $(call CERT_ADD_CMD_OPT,${HASH_ALG},--hash-alg)))
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$(if ${HASH_ALG},$(eval $(call CERT_ADD_CMD_OPT,${HASH_ALG},--hash-alg,FWU_)))
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$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key)))
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$(if ${ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${ROT_KEY},--rot-key,FWU_)))
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$(if ${PROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${PROT_KEY},--prot-key)))
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$(if ${PLAT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${PLAT_KEY},--plat-key)))
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$(if ${SWD_ROT_KEY},$(eval $(call CERT_ADD_CMD_OPT,${SWD_ROT_KEY},--swd-rot-key)))
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$(if ${CORE_SWD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${CORE_SWD_KEY},--core-swd-key)))
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$(if ${TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${TRUSTED_WORLD_KEY},--trusted-world-key)))
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$(if ${NON_TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${NON_TRUSTED_WORLD_KEY},--non-trusted-world-key)))
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# Add the BL2 CoT (image cert)
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ifeq (${NEED_BL2},yes)
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ifeq (${RESET_TO_BL2}, 0)
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ifneq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert))
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endif
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endif
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endif
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# Add the SCP_BL2 CoT (key cert + img cert)
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ifneq (${SCP_BL2},)
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ifneq (${COT},cca)
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$(if ${SCP_BL2_KEY},$(eval $(call CERT_ADD_CMD_OPT,${SCP_BL2_KEY},--scp-fw-key)))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_content.crt,--scp-fw-cert))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/scp_fw_key.crt,--scp-fw-key-cert))
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endif
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endif
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ifeq (${ARCH},aarch64)
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ifeq (${NEED_BL31},yes)
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# Add the BL31 CoT (key cert + img cert)
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$(if ${BL31_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL31_KEY},--soc-fw-key)))
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ifneq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_content.crt,--soc-fw-cert))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/soc_fw_key.crt,--soc-fw-key-cert))
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endif
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endif
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endif
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# Add the BL32 CoT (key cert + img cert)
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ifeq (${NEED_BL32},yes)
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$(if ${BL32_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL32_KEY},--tos-fw-key)))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_content.crt,--tos-fw-cert))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tos_fw_key.crt,--tos-fw-key-cert))
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endif
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# Add the BL33 CoT (key cert + img cert)
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ifneq (${BL33},)
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$(if ${BL33_KEY},$(eval $(call CERT_ADD_CMD_OPT,${BL33_KEY},--nt-fw-key)))
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_content.crt,--nt-fw-cert))
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ifneq (${COT},dualroot)
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ifneq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/nt_fw_key.crt,--nt-fw-key-cert))
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endif
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endif
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endif
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# Add SiP owned Secure Partitions CoT (image cert)
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ifneq (${SP_LAYOUT_FILE},)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/sip_sp_content.crt,--sip-sp-cert))
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ifeq (${COT},dualroot)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/plat_sp_content.crt,--plat-sp-cert))
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endif
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ifeq (${COT},cca)
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$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/plat_sp_content.crt,--plat-sp-cert))
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endif
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endif
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