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https://github.com/ARM-software/arm-trusted-firmware.git
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78da42a5f1
With RSS now introduced, we have 2 Measured Boot backends. Both backends can be used in the same firmware build with potentially different hash algorithms, so now there can be more than one hash algorithm in a build. Therefore the logic for selecting the measured boot hash algorithm needs to be updated and the coordination of algorithm selection added. This is done by: - Adding MBOOT_EL_HASH_ALG for Event Log to define the hash algorithm to replace TPM_HASH_ALG, removing reference to TPM. - Adding MBOOT_RSS_HASH_ALG for RSS to define the hash algorithm to replace TPM_HASH_ALG. - Coordinating MBOOT_EL_HASH_ALG and MBOOT_RSS_HASH_ALG to define the Measured Boot configuration macros through defining TF_MBEDTLS_MBOOT_USE_SHA512 to pull in SHA-512 support if either backend requires a stronger algorithm than SHA-256. Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com> Change-Id: I4ddf06ebdc3835beb4d1b6c7bab5a257ffc5c71a
111 lines
2.8 KiB
Makefile
111 lines
2.8 KiB
Makefile
#
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# Copyright (c) 2015-2022, Arm Limited. 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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ifneq (${MBEDTLS_COMMON_MK},1)
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MBEDTLS_COMMON_MK := 1
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# MBEDTLS_DIR must be set to the mbed TLS main directory (it must contain
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# the 'include' and 'library' subdirectories).
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ifeq (${MBEDTLS_DIR},)
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$(error Error: MBEDTLS_DIR not set)
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endif
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MBEDTLS_INC = -I${MBEDTLS_DIR}/include
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# Specify mbed TLS configuration file
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MBEDTLS_CONFIG_FILE ?= "<drivers/auth/mbedtls/mbedtls_config.h>"
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$(eval $(call add_define,MBEDTLS_CONFIG_FILE))
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MBEDTLS_SOURCES += drivers/auth/mbedtls/mbedtls_common.c
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LIBMBEDTLS_SRCS := $(addprefix ${MBEDTLS_DIR}/library/, \
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aes.c \
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asn1parse.c \
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asn1write.c \
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cipher.c \
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cipher_wrap.c \
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memory_buffer_alloc.c \
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oid.c \
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platform.c \
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platform_util.c \
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bignum.c \
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gcm.c \
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md.c \
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pk.c \
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pk_wrap.c \
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pkparse.c \
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pkwrite.c \
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sha256.c \
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sha512.c \
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ecdsa.c \
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ecp_curves.c \
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ecp.c \
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rsa.c \
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rsa_internal.c \
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x509.c \
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x509_crt.c \
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constant_time.c \
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)
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# The platform may define the variable 'TF_MBEDTLS_KEY_ALG' to select the key
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# algorithm to use. If the variable is not defined, select it based on
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# algorithm used for key generation `KEY_ALG`. If `KEY_ALG` is not defined,
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# then it is set to `rsa`.
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ifeq (${TF_MBEDTLS_KEY_ALG},)
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ifeq (${KEY_ALG}, ecdsa)
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TF_MBEDTLS_KEY_ALG := ecdsa
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else
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TF_MBEDTLS_KEY_ALG := rsa
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endif
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endif
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ifeq (${TF_MBEDTLS_KEY_SIZE},)
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ifneq ($(findstring rsa,${TF_MBEDTLS_KEY_ALG}),)
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ifeq (${KEY_SIZE},)
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TF_MBEDTLS_KEY_SIZE := 2048
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else
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TF_MBEDTLS_KEY_SIZE := ${KEY_SIZE}
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endif
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endif
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endif
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ifeq (${HASH_ALG}, sha384)
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TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA384
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else ifeq (${HASH_ALG}, sha512)
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TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA512
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else
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TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA256
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endif
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ifeq (${TF_MBEDTLS_KEY_ALG},ecdsa)
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TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_ECDSA
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else ifeq (${TF_MBEDTLS_KEY_ALG},rsa)
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TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_RSA
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else ifeq (${TF_MBEDTLS_KEY_ALG},rsa+ecdsa)
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TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_RSA_AND_ECDSA
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else
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$(error "TF_MBEDTLS_KEY_ALG=${TF_MBEDTLS_KEY_ALG} not supported on mbed TLS")
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endif
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ifeq (${DECRYPTION_SUPPORT}, aes_gcm)
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TF_MBEDTLS_USE_AES_GCM := 1
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else
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TF_MBEDTLS_USE_AES_GCM := 0
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endif
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# Needs to be set to drive mbed TLS configuration correctly
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$(eval $(call add_defines,\
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$(sort \
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TF_MBEDTLS_KEY_ALG_ID \
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TF_MBEDTLS_KEY_SIZE \
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TF_MBEDTLS_HASH_ALG_ID \
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TF_MBEDTLS_USE_AES_GCM \
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)))
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$(eval $(call MAKE_LIB,mbedtls))
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endif
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