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#
# Copyright (c) 2015-2023, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
ifneq (${MBEDTLS_COMMON_MK},1)
MBEDTLS_COMMON_MK := 1
# MBEDTLS_DIR must be set to the mbed TLS main directory (it must contain
# the 'include' and 'library' subdirectories).
ifeq (${MBEDTLS_DIR},)
$(error Error: MBEDTLS_DIR not set)
endif
MBEDTLS_INC = -I${MBEDTLS_DIR}/include
MBEDTLS_MAJOR=$(shell grep -hP "define MBEDTLS_VERSION_MAJOR" ${MBEDTLS_DIR}/include/mbedtls/*.h | grep -oe '\([0-9.]*\)')
MBEDTLS_MINOR=$(shell grep -hP "define MBEDTLS_VERSION_MINOR" ${MBEDTLS_DIR}/include/mbedtls/*.h | grep -oe '\([0-9.]*\)')
$(info MBEDTLS_VERSION_MAJOR is [${MBEDTLS_MAJOR}] MBEDTLS_VERSION_MINOR is [${MBEDTLS_MINOR}])
# Specify mbed TLS configuration file
ifeq (${MBEDTLS_MAJOR}, 2)
$(info Deprecation Notice: Please migrate to Mbedtls version 3.x (refer to TF-A documentation for the exact version number))
MBEDTLS_CONFIG_FILE ?= "<drivers/auth/mbedtls/mbedtls_config-2.h>"
else ifeq (${MBEDTLS_MAJOR}, 3)
ifeq (${PSA_CRYPTO},1)
MBEDTLS_CONFIG_FILE ?= "<drivers/auth/mbedtls/psa_mbedtls_config.h>"
else
MBEDTLS_CONFIG_FILE ?= "<drivers/auth/mbedtls/mbedtls_config-3.h>"
endif
endif
$(eval $(call add_define,MBEDTLS_CONFIG_FILE))
MBEDTLS_SOURCES += drivers/auth/mbedtls/mbedtls_common.c
LIBMBEDTLS_SRCS += $(addprefix ${MBEDTLS_DIR}/library/, \
aes.c \
asn1parse.c \
asn1write.c \
cipher.c \
cipher_wrap.c \
constant_time.c \
memory_buffer_alloc.c \
oid.c \
platform.c \
platform_util.c \
bignum.c \
gcm.c \
md.c \
pk.c \
pk_wrap.c \
pkparse.c \
pkwrite.c \
sha256.c \
sha512.c \
ecdsa.c \
ecp_curves.c \
ecp.c \
rsa.c \
x509.c \
x509_crt.c \
)
ifeq (${MBEDTLS_MAJOR}, 2)
LIBMBEDTLS_SRCS += $(addprefix ${MBEDTLS_DIR}/library/, \
rsa_internal.c \
)
else ifeq (${MBEDTLS_MAJOR}, 3)
LIBMBEDTLS_SRCS += $(addprefix ${MBEDTLS_DIR}/library/, \
bignum_core.c \
rsa_alt_helpers.c \
hash_info.c \
)
# Currently on Mbedtls-3 there is outstanding bug due to usage
# of redundant declaration[1], So disable redundant-decls
# compilation flag to avoid compilation error when compiling with
# Mbedtls-3.
# [1]: https://github.com/Mbed-TLS/mbedtls/issues/6910
LIBMBEDTLS_CFLAGS += -Wno-error=redundant-decls
endif
ifeq (${PSA_CRYPTO},1)
LIBMBEDTLS_SRCS += $(addprefix ${MBEDTLS_DIR}/library/, \
psa_crypto.c \
psa_crypto_client.c \
psa_crypto_driver_wrappers.c \
psa_crypto_hash.c \
psa_crypto_rsa.c \
psa_crypto_ecp.c \
psa_crypto_slot_management.c \
)
endif
# The platform may define the variable 'TF_MBEDTLS_KEY_ALG' to select the key
# algorithm to use. If the variable is not defined, select it based on
# algorithm used for key generation `KEY_ALG`. If `KEY_ALG` is not defined,
# then it is set to `rsa`.
ifeq (${TF_MBEDTLS_KEY_ALG},)
ifeq (${KEY_ALG}, ecdsa)
TF_MBEDTLS_KEY_ALG := ecdsa
else
TF_MBEDTLS_KEY_ALG := rsa
endif
endif
ifeq (${TF_MBEDTLS_KEY_SIZE},)
ifneq ($(findstring rsa,${TF_MBEDTLS_KEY_ALG}),)
ifeq (${KEY_SIZE},)
TF_MBEDTLS_KEY_SIZE := 2048
else ifneq ($(filter $(KEY_SIZE), 1024 2048 3072 4096),)
TF_MBEDTLS_KEY_SIZE := ${KEY_SIZE}
else
$(error "Invalid value for KEY_SIZE: ${KEY_SIZE}")
endif
else ifneq ($(findstring ecdsa,${TF_MBEDTLS_KEY_ALG}),)
ifeq (${KEY_SIZE},)
TF_MBEDTLS_KEY_SIZE := 256
else ifneq ($(filter $(KEY_SIZE), 256 384),)
TF_MBEDTLS_KEY_SIZE := ${KEY_SIZE}
else
$(error "Invalid value for KEY_SIZE: ${KEY_SIZE}")
endif
endif
endif
ifeq (${HASH_ALG}, sha384)
TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA384
else ifeq (${HASH_ALG}, sha512)
TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA512
else
TF_MBEDTLS_HASH_ALG_ID := TF_MBEDTLS_SHA256
endif
ifeq (${TF_MBEDTLS_KEY_ALG},ecdsa)
TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_ECDSA
else ifeq (${TF_MBEDTLS_KEY_ALG},rsa)
TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_RSA
else ifeq (${TF_MBEDTLS_KEY_ALG},rsa+ecdsa)
TF_MBEDTLS_KEY_ALG_ID := TF_MBEDTLS_RSA_AND_ECDSA
else
$(error "TF_MBEDTLS_KEY_ALG=${TF_MBEDTLS_KEY_ALG} not supported on mbed TLS")
endif
ifeq (${DECRYPTION_SUPPORT}, aes_gcm)
TF_MBEDTLS_USE_AES_GCM := 1
else
TF_MBEDTLS_USE_AES_GCM := 0
endif
# Needs to be set to drive mbed TLS configuration correctly
$(eval $(call add_defines,\
$(sort \
TF_MBEDTLS_KEY_ALG_ID \
TF_MBEDTLS_KEY_SIZE \
TF_MBEDTLS_HASH_ALG_ID \
TF_MBEDTLS_USE_AES_GCM \
)))
$(eval $(call MAKE_LIB,mbedtls))
endif
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