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# SPDX-License-Identifier: GPL-2.0+
#
# Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
# Lokesh Vutla <lokeshvutla@ti.com>
ifdef CONFIG_SPL_BUILD
# Openssl is required to generate x509 certificate.
# Error out if openssl is not available.
ifeq ($(shell which openssl),)
$(error "No openssl in $(PATH), consider installing openssl")
endif
SHA_VALUE= $(shell openssl dgst -sha512 -hex $(obj)/u-boot-spl.bin | sed -e "s/^.*= //g")
IMAGE_SIZE= $(shell cat $(obj)/u-boot-spl.bin | wc -c)
LOADADDR= $(shell echo $(CONFIG_SPL_TEXT_BASE) | sed -e "s/^0x//g")
MAX_SIZE= $(shell printf "%d" $(CONFIG_SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE))
# Parameters to get populated into the x509 template
SED_OPTS= -e s/TEST_IMAGE_LENGTH/$(IMAGE_SIZE)/
SED_OPTS+= -e s/TEST_IMAGE_SHA_VAL/$(SHA_VALUE)/
SED_OPTS+= -e s/TEST_CERT_TYPE/1/ # CERT_TYPE_PRIMARY_IMAGE_BIN
SED_OPTS+= -e s/TEST_BOOT_CORE/$(CONFIG_SYS_K3_BOOT_CORE_ID)/
SED_OPTS+= -e s/TEST_BOOT_ARCH_WIDTH/32/
SED_OPTS+= -e s/TEST_BOOT_ADDR/$(LOADADDR)/
# Command to generate ecparam key
quiet_cmd_genkey = OPENSSL $@
cmd_genkey = openssl ecparam -out $@ -name prime256v1 -genkey
# Command to generate x509 certificate
quiet_cmd_gencert = OPENSSL $@
cmd_gencert = cat $(srctree)/tools/k3_x509template.txt | sed $(SED_OPTS) > u-boot-spl-x509.txt; \
openssl req -new -x509 -key $(KEY) -nodes -outform DER -out $@ -config u-boot-spl-x509.txt -sha512
# If external key is not provided, generate key using openssl.
ifeq ($(CONFIG_SYS_K3_KEY), "")
KEY=u-boot-spl-eckey.pem
else
KEY=$(patsubst "%",%,$(CONFIG_SYS_K3_KEY))
endif
u-boot-spl-eckey.pem: FORCE
$(call if_changed,genkey)
# tiboot3.bin is mandated by ROM and ROM only supports R5 boot.
# So restrict tiboot3.bin creation for CPU_V7R.
ifdef CONFIG_CPU_V7R
u-boot-spl-cert.bin: $(KEY) $(obj)/u-boot-spl.bin image_check FORCE
$(call if_changed,gencert)
image_check: $(obj)/u-boot-spl.bin FORCE
@if [ $(IMAGE_SIZE) -gt $(MAX_SIZE) ]; then \
echo "===============================================" >&2; \
echo "ERROR: Final Image too big. " >&2; \
echo "$< size = $(IMAGE_SIZE), max size = $(MAX_SIZE)" >&2; \
echo "===============================================" >&2; \
exit 1; \
fi
tiboot3.bin: u-boot-spl-cert.bin $(obj)/u-boot-spl.bin FORCE
$(call if_changed,cat)
ALL-y += tiboot3.bin
endif
ifdef CONFIG_ARM64
SPL_ITS := u-boot-spl-k3.its
$(SPL_ITS): FORCE
$(srctree)/tools/k3_fit_atf.sh \
$(patsubst %,$(obj)/dts/%.dtb,$(subst ",,$(CONFIG_SPL_OF_LIST))) > $@
ALL-y += tispl.bin
endif
else
ALL-y += u-boot.img
endif
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