imx.mk - OP-TEE/build - TrustedFirmware Git Browser

 ################################################################################
 # Following variables defines how the NS_USER (Non Secure User - Client
 # Application), NS_KERNEL (Non Secure Kernel), S_KERNEL (Secure Kernel) and
 # S_USER (Secure User - TA) are compiled
 ################################################################################
 override COMPILE_NS_USER   := 64
 override COMPILE_NS_KERNEL := 64
 override COMPILE_S_USER    := 64
 override COMPILE_S_KERNEL  := 64

 TFA_PLATFORM      ?= imx8mq
 OPTEE_OS_PLATFORM ?= imx-mx8mqevk
 U_BOOT_DEFCONFIG  ?= imx8mq_evk_defconfig
 U_BOOT_DT         ?= imx8mq-evk.dtb
 LINUX_DT          ?= imx8mq-evk.dtb
 MKIMAGE_DT        ?= fsl-imx8mq-evk.dtb
 MKIMAGE_SOC       ?= iMX8MQ

 BR2_TARGET_GENERIC_GETTY_PORT ?= ttymxc0
 BR2_TARGET_ROOTFS_EXT2 ?= y
 BR2_TARGET_ROOTFS_EXT2_4 ?= y

 include common.mk

 ################################################################################
 # Paths to git projects and various binaries
 ################################################################################
 ifeq ($(DEBUG),1)
 TF_A_BUILD		?= debug
 else
 TF_A_BUILD		?= release
 endif

 FIRMWARE_PATH		?= $(ROOT)/out-firmware
 MKIMAGE_PATH		?= $(ROOT)/imx-mkimage
 MKIMAGE_SOC_PATH	?= $(MKIMAGE_PATH)/iMX8M
 TF_A_PATH		?= $(ROOT)/trusted-firmware-a

 FIRMWARE_VERSION	?= firmware-imx-8.0
 FIRMWARE_BIN_SHA256_SUM ?= 63ec62f5d229cbed00918c8449173933f1c9d594c59396b8dd217e94f47138b0
 FIRMWARE_BIN		?= $(FIRMWARE_VERSION).bin
 FIRMWARE_BIN_URL	?= https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/$(FIRMWARE_BIN)

 BOOT_IMG		?= $(ROOT)/out/boot.img

 # Set the variable to include the board config snippet
 # Default value is empty, will select the imx8mq-evk board.
 # Possible values: "imx8mp-evk" or "imx8mp-verdin"
 IMX_BOARD ?=
 ifneq (,$(IMX_BOARD))
 include $(IMX_BOARD).inc.mk
 endif

 ################################################################################
 # Targets
 ################################################################################
 all: tfa u-boot linux optee-os buildroot flash-image
 clean: ddr-firmware-clean optee-os-clean tfa-clean u-boot-clean buildroot-clean

 include toolchain.mk

 ################################################################################
 # ARM Trusted Firmware
 ################################################################################
 TF_A_EXPORTS = CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"

 #	BL32=$(OPTEE_OS_HEADER_V2_BIN) \
 #	BL32_EXTRA1=$(OPTEE_OS_PAGER_V2_BIN) \
 #	BL32_EXTRA2=$(OPTEE_OS_PAGEABLE_V2_BIN) \

 TF_A_FLAGS += PLAT=$(TFA_PLATFORM) SPD=opteed DEBUG_CONSOLE=1 DEBUG=0 V=1
 TF_A_FLAGS += BL32=$(OPTEE_OS_PATH)/out/arm/core/tee-raw.bin

 tfa: optee-os
 	$(TF_A_EXPORTS) $(MAKE) -C $(TF_A_PATH) $(TF_A_FLAGS) all fip

 tfa-clean:
 	$(TF_A_EXPORTS) $(MAKE) -C $(TF_A_PATH) $(TF_A_FLAGS) clean

 ################################################################################
 # U-Boot
 ################################################################################

 U-BOOT_EXPORTS = CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"

 U-BOOT_DEFCONFIG_FILES := $(UBOOT_PATH)/configs/$(U_BOOT_DEFCONFIG) \
 			  $(BUILD_PATH)/kconfigs/uboot_imx8.conf

 $(UBOOT_PATH)/.config: $(U-BOOT_DEFCONFIG_FILES)
 	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH) $(U_BOOT_DEFCONFIG)
 	(cd $(UBOOT_PATH) && ARCH=arm64 scripts/kconfig/merge_config.sh \
 		$(U-BOOT_DEFCONFIG_FILES))

 .PHONY: u-boot-defconfig
 u-boot-defconfig: $(UBOOT_PATH)/.config

 .PHONY: u-boot
 u-boot: u-boot-defconfig tfa ddr-firmware
 	# Copy DDR4 firmware
 	cp $(FIRMWARE_PATH)/$(FIRMWARE_VERSION)/firmware/ddr/synopsys/lpddr4_pmu_train_*.bin \
 		$(UBOOT_PATH)
 	# Copy BL31 binary from TF-A
 	cp $(TF_A_PATH)/build/$(TFA_PLATFORM)/$(TF_A_BUILD)/bl31.bin $(UBOOT_PATH)
 	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH)

 .PHONY: u-boot-clean
 u-boot-clean:
 	cd $(UBOOT_PATH) && git clean -xdf

 .PHONY: u-boot-cscope
 u-boot-cscope:
 	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH) cscope


 ################################################################################
 # Linux kernel
 ################################################################################
 LINUX_DEFCONFIG_COMMON_ARCH := arm64
 LINUX_DEFCONFIG_COMMON_FILES := \
 		$(LINUX_PATH)/arch/arm64/configs/defconfig \
 		$(CURDIR)/kconfigs/imx.conf

 linux-defconfig: $(LINUX_PATH)/.config

 LINUX_COMMON_FLAGS += ARCH=arm64

 linux: linux-common

 linux-defconfig-clean: linux-defconfig-clean-common

 LINUX_CLEAN_COMMON_FLAGS += ARCH=arm64

 linux-clean: linux-clean-common

 LINUX_CLEANER_COMMON_FLAGS += ARCH=arm64

 linux-cleaner: linux-cleaner-common

 ################################################################################
 # OP-TEE
 ################################################################################
 optee-os: optee-os-common
 optee-os-clean: optee-os-clean-common

 ################################################################################
 # DDR firmware
 ################################################################################
 # This is prebuilt binaries by NXP, download them and use them. Update path if
 # it changes in the future.

 $(FIRMWARE_PATH)/$(FIRMWARE_BIN):
 	mkdir -p $(FIRMWARE_PATH)
 	(cd $(FIRMWARE_PATH) && wget $(FIRMWARE_BIN_URL))

 $(FIRMWARE_PATH)/.unpacked: $(FIRMWARE_PATH)/$(FIRMWARE_BIN)
 	(cd $(FIRMWARE_PATH) && \
 	 echo $(FIRMWARE_BIN_SHA256_SUM) $(FIRMWARE_BIN) | sha256sum -c)
 	(cd $(FIRMWARE_PATH) && \
 	 chmod 711 $(FIRMWARE_BIN) && ./$(FIRMWARE_BIN) --auto-accept)
 	touch $(FIRMWARE_PATH)/.unpacked

 .PHONY: ddr-firmware
 ddr-firmware: $(FIRMWARE_PATH)/.unpacked

 ddr-firmware-clean:
 	rm -rf $(FIRMWARE_PATH)

 ################################################################################
 # imx-mkimage
 ################################################################################
 mkimage: u-boot
 	ln -sf $(OPTEE_OS_PATH)/out/arm/core/tee-raw.bin \
 		$(MKIMAGE_SOC_PATH)/tee.bin
 	ln -sf $(TF_A_PATH)/build/$(TFA_PLATFORM)/$(TF_A_BUILD)/bl31.bin \
 		$(MKIMAGE_SOC_PATH)/
 	ln -sf $(FIRMWARE_PATH)/$(FIRMWARE_VERSION)/firmware/ddr/synopsys/lpddr4_pmu_train_*.bin \
 		$(MKIMAGE_SOC_PATH)/
 	ln -sf $(UBOOT_PATH)/u-boot-nodtb.bin $(MKIMAGE_SOC_PATH)/
 	ln -sf $(UBOOT_PATH)/spl/u-boot-spl.bin $(MKIMAGE_SOC_PATH)/
 	ln -sf $(UBOOT_PATH)/arch/arm/dts/$(U_BOOT_DT) \
 		$(MKIMAGE_SOC_PATH)/$(MKIMAGE_DT)
 	ln -sf $(UBOOT_PATH)/tools/mkimage $(MKIMAGE_SOC_PATH)/mkimage_uboot
 	# imx8mp: allow to override TEE_LOAD_ADDR
 	# https://github.com/nxp-imx/imx-mkimage/pull/3
 	sed -i 's/TEE_LOAD_ADDR =  /TEE_LOAD_ADDR ?= /' $(MKIMAGE_SOC_PATH)/soc.mak
 	$(MAKE) -C $(MKIMAGE_PATH) SOC=$(MKIMAGE_SOC) flash_spl_uboot
 #> +If you want to run with HDMI, copy signed_hdmi_imx8m.bin to imx-mkimage/iMX8M
 #> +make SOC=iMX8M flash_spl_uboot or make SOC=iMX8M flash_hdmi_spl_uboot to
 #> +generate flash.bin.
 mkimage-clean:
 	cd $(MKIMAGE_PATH) && git clean -xdf
 	rm -f $(BUILD_PATH)/mkimage_imx8

 $(ROOT)/out-br/images/ramdisk.img: $(ROOT)/out-br/images/rootfs.cpio.gz
 	$(UBOOT_PATH)/tools/mkimage -A arm64 -O linux -T ramdisk -C gzip \
 		-d $< $@

 $(ROOT)/out:
 	mkdir -p $@

 $(ROOT)/out/boot.scr: $(BUILD_PATH)/imx/u-boot_boot_script | $(ROOT)/out
 	$(UBOOT_PATH)/tools/mkimage -T script -C none -n 'Boot script' \
 		-d $< $@

 ################################################################################
 # Flash images
 ################################################################################
 USE_PERSISTENT_ROOTFS ?= 0

 # Configuration of the BOOT partition
 FLASH_PARTITIONS_BLOCK_SIZE = 512
 FLASH_PARTITION_BOOT_START_BLOCK = 16384
 FLASH_PARTITION_BOOT_SIZE_IN_BYTES = \
 	$(shell echo $$(( 64 * 1024 * 1024 )))
 FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS = \
 	$(shell echo $$(( $(FLASH_PARTITION_BOOT_SIZE_IN_BYTES) / $(FLASH_PARTITIONS_BLOCK_SIZE) )))
 FLASH_PARTITIONS_TABLE = "\
 	start=$(FLASH_PARTITION_BOOT_START_BLOCK) \
 	size=$(FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS) \
 	type=7\n"
 FLASH_IMAGE_SIZE = \
 	$(shell echo $$(( $(FLASH_PARTITION_BOOT_START_BLOCK) * $(FLASH_PARTITIONS_BLOCK_SIZE) \
 	+ $(FLASH_PARTITION_BOOT_SIZE_IN_BYTES) )))

 # Configuration of the ROOTFS partition if enabled
 ifeq ($(USE_PERSISTENT_ROOTFS),1)
 FLASH_PARTITION_ROOTFS_IMAGE_PATH = $(ROOT)/out-br/images/rootfs.ext4
 FLASH_PARTITION_ROOTFS_START_BLOCK = \
 	$(shell echo $$(( $(FLASH_PARTITION_BOOT_START_BLOCK) + $(FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS) )))
 FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES = \
 	$(shell stat -L --printf="%s" $(FLASH_PARTITION_ROOTFS_IMAGE_PATH))
 FLASH_PARTITION_ROOTFS_SIZE_IN_BLOCKS = \
 	$(shell echo $$(( $(FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES) / $(FLASH_PARTITIONS_BLOCK_SIZE) )))
 FLASH_PARTITIONS_TABLE += "\
 	start=$(FLASH_PARTITION_ROOTFS_START_BLOCK) \
 	size=$(FLASH_PARTITION_ROOTFS_SIZE_IN_BLOCKS) \
 	type=83\n"
 FLASH_IMAGE_SIZE := $(shell echo $$(( $(FLASH_IMAGE_SIZE) + $(FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES) )))
 endif

 .PHONY: flash-image
 flash-image: buildroot mkimage linux
 	$(MAKE) flash-image-only

 .PHONY: flash-image-only
 flash-image-only: $(ROOT)/out-br/images/ramdisk.img $(ROOT)/out/boot.scr
 	rm -f $(BOOT_IMG)
 	truncate -s $(FLASH_IMAGE_SIZE) $(BOOT_IMG)
 	echo -ne $(FLASH_PARTITIONS_TABLE) | sfdisk $(BOOT_IMG)
 	mformat -i $(BOOT_IMG).fat -n 64 -h 255 -T 131072 -v "BOOT IMG" -C ::
 	mcopy -i $(BOOT_IMG).fat $(LINUX_PATH)/arch/arm64/boot/Image ::
 	mcopy -i $(BOOT_IMG).fat \
 		$(LINUX_PATH)/arch/arm64/boot/dts/freescale/$(LINUX_DT) ::
 	mcopy -i $(BOOT_IMG).fat $(ROOT)/out/boot.scr ::

 ifeq ($(USE_PERSISTENT_ROOTFS),1)
 	dd if=$(FLASH_PARTITION_ROOTFS_IMAGE_PATH) of=$(BOOT_IMG) bs=$(FLASH_PARTITIONS_BLOCK_SIZE) \
 		seek=$(FLASH_PARTITION_ROOTFS_START_BLOCK) conv=fsync,notrunc
 else
 	mcopy -i $(BOOT_IMG).fat $(ROOT)/out-br/images/ramdisk.img ::
 endif

 	dd if=$(BOOT_IMG).fat of=$(BOOT_IMG) bs=$(FLASH_PARTITIONS_BLOCK_SIZE) \
 		seek=$(FLASH_PARTITION_BOOT_START_BLOCK) conv=fsync,notrunc
 	dd if=$(MKIMAGE_SOC_PATH)/flash.bin of=$(BOOT_IMG) bs=1k seek=33 \
 		conv=fsync,notrunc
	################################################################################
	# Following variables defines how the NS_USER (Non Secure User - Client
	# Application), NS_KERNEL (Non Secure Kernel), S_KERNEL (Secure Kernel) and
	# S_USER (Secure User - TA) are compiled
	################################################################################
	override COMPILE_NS_USER := 64
	override COMPILE_NS_KERNEL := 64
	override COMPILE_S_USER := 64
	override COMPILE_S_KERNEL := 64

	TFA_PLATFORM ?= imx8mq
	OPTEE_OS_PLATFORM ?= imx-mx8mqevk
	U_BOOT_DEFCONFIG ?= imx8mq_evk_defconfig
	U_BOOT_DT ?= imx8mq-evk.dtb
	LINUX_DT ?= imx8mq-evk.dtb
	MKIMAGE_DT ?= fsl-imx8mq-evk.dtb
	MKIMAGE_SOC ?= iMX8MQ

	BR2_TARGET_GENERIC_GETTY_PORT ?= ttymxc0
	BR2_TARGET_ROOTFS_EXT2 ?= y
	BR2_TARGET_ROOTFS_EXT2_4 ?= y

	include common.mk

	################################################################################
	# Paths to git projects and various binaries
	################################################################################
	ifeq ($(DEBUG),1)
	TF_A_BUILD ?= debug
	else
	TF_A_BUILD ?= release
	endif

	FIRMWARE_PATH ?= $(ROOT)/out-firmware
	MKIMAGE_PATH ?= $(ROOT)/imx-mkimage
	MKIMAGE_SOC_PATH ?= $(MKIMAGE_PATH)/iMX8M
	TF_A_PATH ?= $(ROOT)/trusted-firmware-a

	FIRMWARE_VERSION ?= firmware-imx-8.0
	FIRMWARE_BIN_SHA256_SUM ?= 63ec62f5d229cbed00918c8449173933f1c9d594c59396b8dd217e94f47138b0
	FIRMWARE_BIN ?= $(FIRMWARE_VERSION).bin
	FIRMWARE_BIN_URL ?= https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/$(FIRMWARE_BIN)

	BOOT_IMG ?= $(ROOT)/out/boot.img

	# Set the variable to include the board config snippet
	# Default value is empty, will select the imx8mq-evk board.
	# Possible values: "imx8mp-evk" or "imx8mp-verdin"
	IMX_BOARD ?=
	ifneq (,$(IMX_BOARD))
	include $(IMX_BOARD).inc.mk
	endif

	################################################################################
	# Targets
	################################################################################
	all: tfa u-boot linux optee-os buildroot flash-image
	clean: ddr-firmware-clean optee-os-clean tfa-clean u-boot-clean buildroot-clean

	include toolchain.mk

	################################################################################
	# ARM Trusted Firmware
	################################################################################
	TF_A_EXPORTS = CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"

	# BL32=$(OPTEE_OS_HEADER_V2_BIN) \
	# BL32_EXTRA1=$(OPTEE_OS_PAGER_V2_BIN) \
	# BL32_EXTRA2=$(OPTEE_OS_PAGEABLE_V2_BIN) \

	TF_A_FLAGS += PLAT=$(TFA_PLATFORM) SPD=opteed DEBUG_CONSOLE=1 DEBUG=0 V=1
	TF_A_FLAGS += BL32=$(OPTEE_OS_PATH)/out/arm/core/tee-raw.bin

	tfa: optee-os
	$(TF_A_EXPORTS) $(MAKE) -C $(TF_A_PATH) $(TF_A_FLAGS) all fip

	tfa-clean:
	$(TF_A_EXPORTS) $(MAKE) -C $(TF_A_PATH) $(TF_A_FLAGS) clean

	################################################################################
	# U-Boot
	################################################################################

	U-BOOT_EXPORTS = CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"

	U-BOOT_DEFCONFIG_FILES := $(UBOOT_PATH)/configs/$(U_BOOT_DEFCONFIG) \
	$(BUILD_PATH)/kconfigs/uboot_imx8.conf

	$(UBOOT_PATH)/.config: $(U-BOOT_DEFCONFIG_FILES)
	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH) $(U_BOOT_DEFCONFIG)
	(cd $(UBOOT_PATH) && ARCH=arm64 scripts/kconfig/merge_config.sh \
	$(U-BOOT_DEFCONFIG_FILES))

	.PHONY: u-boot-defconfig
	u-boot-defconfig: $(UBOOT_PATH)/.config

	.PHONY: u-boot
	u-boot: u-boot-defconfig tfa ddr-firmware
	# Copy DDR4 firmware
	cp $(FIRMWARE_PATH)/$(FIRMWARE_VERSION)/firmware/ddr/synopsys/lpddr4_pmu_train_*.bin \
	$(UBOOT_PATH)
	# Copy BL31 binary from TF-A
	cp $(TF_A_PATH)/build/$(TFA_PLATFORM)/$(TF_A_BUILD)/bl31.bin $(UBOOT_PATH)
	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH)

	.PHONY: u-boot-clean
	u-boot-clean:
	cd $(UBOOT_PATH) && git clean -xdf

	.PHONY: u-boot-cscope
	u-boot-cscope:
	$(U-BOOT_EXPORTS) $(MAKE) -C $(UBOOT_PATH) cscope


	################################################################################
	# Linux kernel
	################################################################################
	LINUX_DEFCONFIG_COMMON_ARCH := arm64
	LINUX_DEFCONFIG_COMMON_FILES := \
	$(LINUX_PATH)/arch/arm64/configs/defconfig \
	$(CURDIR)/kconfigs/imx.conf

	linux-defconfig: $(LINUX_PATH)/.config

	LINUX_COMMON_FLAGS += ARCH=arm64

	linux: linux-common

	linux-defconfig-clean: linux-defconfig-clean-common

	LINUX_CLEAN_COMMON_FLAGS += ARCH=arm64

	linux-clean: linux-clean-common

	LINUX_CLEANER_COMMON_FLAGS += ARCH=arm64

	linux-cleaner: linux-cleaner-common

	################################################################################
	# OP-TEE
	################################################################################
	optee-os: optee-os-common
	optee-os-clean: optee-os-clean-common

	################################################################################
	# DDR firmware
	################################################################################
	# This is prebuilt binaries by NXP, download them and use them. Update path if
	# it changes in the future.

	$(FIRMWARE_PATH)/$(FIRMWARE_BIN):
	mkdir -p $(FIRMWARE_PATH)
	(cd $(FIRMWARE_PATH) && wget $(FIRMWARE_BIN_URL))

	$(FIRMWARE_PATH)/.unpacked: $(FIRMWARE_PATH)/$(FIRMWARE_BIN)
	(cd $(FIRMWARE_PATH) && \
	echo $(FIRMWARE_BIN_SHA256_SUM) $(FIRMWARE_BIN) \| sha256sum -c)
	(cd $(FIRMWARE_PATH) && \
	chmod 711 $(FIRMWARE_BIN) && ./$(FIRMWARE_BIN) --auto-accept)
	touch $(FIRMWARE_PATH)/.unpacked

	.PHONY: ddr-firmware
	ddr-firmware: $(FIRMWARE_PATH)/.unpacked

	ddr-firmware-clean:
	rm -rf $(FIRMWARE_PATH)

	################################################################################
	# imx-mkimage
	################################################################################
	mkimage: u-boot
	ln -sf $(OPTEE_OS_PATH)/out/arm/core/tee-raw.bin \
	$(MKIMAGE_SOC_PATH)/tee.bin
	ln -sf $(TF_A_PATH)/build/$(TFA_PLATFORM)/$(TF_A_BUILD)/bl31.bin \
	$(MKIMAGE_SOC_PATH)/
	ln -sf $(FIRMWARE_PATH)/$(FIRMWARE_VERSION)/firmware/ddr/synopsys/lpddr4_pmu_train_*.bin \
	$(MKIMAGE_SOC_PATH)/
	ln -sf $(UBOOT_PATH)/u-boot-nodtb.bin $(MKIMAGE_SOC_PATH)/
	ln -sf $(UBOOT_PATH)/spl/u-boot-spl.bin $(MKIMAGE_SOC_PATH)/
	ln -sf $(UBOOT_PATH)/arch/arm/dts/$(U_BOOT_DT) \
	$(MKIMAGE_SOC_PATH)/$(MKIMAGE_DT)
	ln -sf $(UBOOT_PATH)/tools/mkimage $(MKIMAGE_SOC_PATH)/mkimage_uboot
	# imx8mp: allow to override TEE_LOAD_ADDR
	# https://github.com/nxp-imx/imx-mkimage/pull/3
	sed -i 's/TEE_LOAD_ADDR = /TEE_LOAD_ADDR ?= /' $(MKIMAGE_SOC_PATH)/soc.mak
	$(MAKE) -C $(MKIMAGE_PATH) SOC=$(MKIMAGE_SOC) flash_spl_uboot
	#> +If you want to run with HDMI, copy signed_hdmi_imx8m.bin to imx-mkimage/iMX8M
	#> +make SOC=iMX8M flash_spl_uboot or make SOC=iMX8M flash_hdmi_spl_uboot to
	#> +generate flash.bin.
	mkimage-clean:
	cd $(MKIMAGE_PATH) && git clean -xdf
	rm -f $(BUILD_PATH)/mkimage_imx8

	$(ROOT)/out-br/images/ramdisk.img: $(ROOT)/out-br/images/rootfs.cpio.gz
	$(UBOOT_PATH)/tools/mkimage -A arm64 -O linux -T ramdisk -C gzip \
	-d $< $@

	$(ROOT)/out:
	mkdir -p $@

	$(ROOT)/out/boot.scr: $(BUILD_PATH)/imx/u-boot_boot_script \| $(ROOT)/out
	$(UBOOT_PATH)/tools/mkimage -T script -C none -n 'Boot script' \
	-d $< $@

	################################################################################
	# Flash images
	################################################################################
	USE_PERSISTENT_ROOTFS ?= 0

	# Configuration of the BOOT partition
	FLASH_PARTITIONS_BLOCK_SIZE = 512
	FLASH_PARTITION_BOOT_START_BLOCK = 16384
	FLASH_PARTITION_BOOT_SIZE_IN_BYTES = \
	$(shell echo $$(( 64 * 1024 * 1024 )))
	FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS = \
	$(shell echo $$(( $(FLASH_PARTITION_BOOT_SIZE_IN_BYTES) / $(FLASH_PARTITIONS_BLOCK_SIZE) )))
	FLASH_PARTITIONS_TABLE = "\
	start=$(FLASH_PARTITION_BOOT_START_BLOCK) \
	size=$(FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS) \
	type=7\n"
	FLASH_IMAGE_SIZE = \
	$(shell echo $$(( $(FLASH_PARTITION_BOOT_START_BLOCK) * $(FLASH_PARTITIONS_BLOCK_SIZE) \
	+ $(FLASH_PARTITION_BOOT_SIZE_IN_BYTES) )))

	# Configuration of the ROOTFS partition if enabled
	ifeq ($(USE_PERSISTENT_ROOTFS),1)
	FLASH_PARTITION_ROOTFS_IMAGE_PATH = $(ROOT)/out-br/images/rootfs.ext4
	FLASH_PARTITION_ROOTFS_START_BLOCK = \
	$(shell echo $$(( $(FLASH_PARTITION_BOOT_START_BLOCK) + $(FLASH_PARTITION_BOOT_SIZE_IN_BLOCKS) )))
	FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES = \
	$(shell stat -L --printf="%s" $(FLASH_PARTITION_ROOTFS_IMAGE_PATH))
	FLASH_PARTITION_ROOTFS_SIZE_IN_BLOCKS = \
	$(shell echo $$(( $(FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES) / $(FLASH_PARTITIONS_BLOCK_SIZE) )))
	FLASH_PARTITIONS_TABLE += "\
	start=$(FLASH_PARTITION_ROOTFS_START_BLOCK) \
	size=$(FLASH_PARTITION_ROOTFS_SIZE_IN_BLOCKS) \
	type=83\n"
	FLASH_IMAGE_SIZE := $(shell echo $$(( $(FLASH_IMAGE_SIZE) + $(FLASH_PARTITION_ROOTFS_SIZE_IN_BYTES) )))
	endif

	.PHONY: flash-image
	flash-image: buildroot mkimage linux
	$(MAKE) flash-image-only

	.PHONY: flash-image-only
	flash-image-only: $(ROOT)/out-br/images/ramdisk.img $(ROOT)/out/boot.scr
	rm -f $(BOOT_IMG)
	truncate -s $(FLASH_IMAGE_SIZE) $(BOOT_IMG)
	echo -ne $(FLASH_PARTITIONS_TABLE) \| sfdisk $(BOOT_IMG)
	mformat -i $(BOOT_IMG).fat -n 64 -h 255 -T 131072 -v "BOOT IMG" -C ::
	mcopy -i $(BOOT_IMG).fat $(LINUX_PATH)/arch/arm64/boot/Image ::
	mcopy -i $(BOOT_IMG).fat \
	$(LINUX_PATH)/arch/arm64/boot/dts/freescale/$(LINUX_DT) ::
	mcopy -i $(BOOT_IMG).fat $(ROOT)/out/boot.scr ::

	ifeq ($(USE_PERSISTENT_ROOTFS),1)
	dd if=$(FLASH_PARTITION_ROOTFS_IMAGE_PATH) of=$(BOOT_IMG) bs=$(FLASH_PARTITIONS_BLOCK_SIZE) \
	seek=$(FLASH_PARTITION_ROOTFS_START_BLOCK) conv=fsync,notrunc
	else
	mcopy -i $(BOOT_IMG).fat $(ROOT)/out-br/images/ramdisk.img ::
	endif

	dd if=$(BOOT_IMG).fat of=$(BOOT_IMG) bs=$(FLASH_PARTITIONS_BLOCK_SIZE) \
	seek=$(FLASH_PARTITION_BOOT_START_BLOCK) conv=fsync,notrunc
	dd if=$(MKIMAGE_SOC_PATH)/flash.bin of=$(BOOT_IMG) bs=1k seek=33 \
	conv=fsync,notrunc