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# use sudo (non interactively) when running as regular user
ifneq ($(shell id -u),0)
AS_ROOT := sudo -n
endif
MOUNT := $(AS_ROOT) mount
UMOUNT := $(AS_ROOT) umount
CTR := podman
CP := cp
GIT := git
CTR_IMG_TAG := avans-linux
CTRIZE := $(CTR) run
CTRIZE += --rm
CTRIZE += --tty
CTRIZE += --volume /tmp:/tmp:rw
CTRIZE += --volume .:/workdir:rw
CTRIZE += --env-file ./env
CTRIZE += --env MAKE*
CTRIZE += $(CTR_IMG_TAG)
export
# create dummy files to represent non-file targets (container image build
# status, sd card partition status, git submodule initialization, etc.)
$(eval $(shell state/gen))
# read environment variables from ./env
include ./env
export
# shortcuts
.PHONY: all
all: $(BOOTLOADER_FILES)
.PHONY: sd_format sd_partition
sd_format: state/sdcard_fmt
sd_partition: state/sdcard_part
state/container_img: Containerfile
$(CTR) build --tag $(CTR_IMG_TAG) .
touch $@
state/submodules:
$(GIT) submodule update --init
touch $@
state/sdcard_part:
$(AS_ROOT) util/part $(SDCARD_DISK)
touch $@
state/sdcard_fmt: state/sdcard_part
$(eval $(shell state/gen))
$(AS_ROOT) mkfs.vfat -n BOOT -F 32 $(SDCARD_PART_BOOT)
$(AS_ROOT) mkfs.ext4 -L ROOTFS -F $(SDCARD_PART_ROOTFS)
touch $@
bootloader/.config: state/submodules state/container_img
$(CTRIZE) $(MAKE) -C bootloader am335x_evm_config
.PHONY: build_bootloader
build_bootloader: bootloader/.config state/container_img
$(CTRIZE) $(MAKE) -C bootloader
BOOTLOADER_FILES += bootloader/u-boot.img
BOOTLOADER_FILES += bootloader/u-boot.dtb
BOOTLOADER_FILES += bootloader/MLO
$(BOOTLOADER_FILES): build_bootloader
kernel/.config: state/submodules state/container_img
$(CTRIZE) $(MAKE) -C kernel bb.org_defconfig
.PHONY: build_kernel
build_kernel: kernel/.config state/container_img
$(CTRIZE) $(MAKE) -C kernel zImage
KERNEL_FILES += kernel/arch/$(ARCH)/boot/dts/am335x-boneblack.dtb
KERNEL_FILES += kernel/arch/$(ARCH)/boot/zImage
$(KERNEL_FILES): build_kernel
FILES_PART_BOOT += $(BOOTLOADER_FILES)
FILES_PART_BOOT += $(KERNEL_FILES)
.PHONY: load_boot load_rootfs
load_boot: $(FILES_PART_BOOT) state/sdcard_fmt
mkdir -p mnt/boot
$(MOUNT) $(SDCARD_PART_BOOT) mnt/boot
$(AS_ROOT) $(CP) $(FILES_PART_BOOT) mnt/boot
$(AS_ROOT) sync
$(UMOUNT) mnt/boot
# TODO
# FILES_PART_ROOTFS += ....
load_rootfs: state/sdcard_fmt
mkdir -p mnt/rootfs
$(MOUNT) $(SDCARD_PART_ROOTFS) mnt/rootfs
$(AS_ROOT) $(CP) $(FILES_PART_ROOTFS) mnt/boot
$(AS_ROOT) sync
$(UMOUNT) mnt/rootfs
.PHONY: status
status:
@echo '### STATUS REPORT'
@echo '# ENVIRONMENT'
state/gen
@echo '# TARGETS'
@ls state | awk '$$0 == "gen" || $$0 == "auto.mk" { next } { print }'
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