linux-imx

# SPDX-License-Identifier: GPL-2.0

#

# Makefile for the linux kernel signature checking certificates.

#

​

obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o

obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o

ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"")

obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o

else

obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o

endif

​

ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)

​

$(eval $(call config_filename,SYSTEM_TRUSTED_KEYS))

​

# GCC doesn't include .incbin files in -MD generated dependencies (PR#66871)

$(obj)/system_certificates.o: $(obj)/x509_certificate_list

​

# Cope with signing_key.x509 existing in $(srctree) not $(objtree)

AFLAGS_system_certificates.o := -I$(srctree)

​

quiet_cmd_extract_certs  = EXTRACT_CERTS   $(patsubst "%",%,$(2))

      cmd_extract_certs  = scripts/extract-cert $(2) $@

​

targets += x509_certificate_list

$(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(SYSTEM_TRUSTED_KEYS_FILENAME) FORCE

    $(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))

endif # CONFIG_SYSTEM_TRUSTED_KEYRING

​

clean-files := x509_certificate_list .x509.list

​

ifeq ($(CONFIG_MODULE_SIG),y)

###############################################################################

#

# If module signing is requested, say by allyesconfig, but a key has not been

# supplied, then one will need to be generated to make sure the build does not

# fail and that the kernel may be used afterwards.

#

###############################################################################

ifndef CONFIG_MODULE_SIG_HASH

$(error Could not determine digest type to use from kernel config)

endif

​

redirect_openssl    = 2>&1

quiet_redirect_openssl  = 2>&1

silent_redirect_openssl = 2>/dev/null

​

# We do it this way rather than having a boolean option for enabling an

# external private key, because 'make randconfig' might enable such a

# boolean option and we unfortunately can't make it depend on !RANDCONFIG.

ifeq ($(CONFIG_MODULE_SIG_KEY),"certs/signing_key.pem")

$(obj)/signing_key.pem: $(obj)/x509.genkey

    @$(kecho) "###"

    @$(kecho) "### Now generating an X.509 key pair to be used for signing modules."

    @$(kecho) "###"

    @$(kecho) "### If this takes a long time, you might wish to run rngd in the"

    @$(kecho) "### background to keep the supply of entropy topped up.  It"

    @$(kecho) "### needs to be run as root, and uses a hardware random"

    @$(kecho) "### number generator if one is available."

    @$(kecho) "###"

    $(Q)openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \