ref: e2e9ffea72073b3b706d1e7f7c07b3ccf79e9864
dir: /sys/src/boot/bcm/mkfile/
URL=https://github.com/raspberrypi/firmware/raw/master/boot
FILES=bootcode.bin fixup_cd.dat start_cd.elf fixup4cd.dat start4cd.elf \
	bcm2711-rpi-4-b.dtb \
	bcm2711-rpi-400.dtb \
	bcm2711-rpi-cm4.dtb \
	LICENCE.broadcom
all:V:	$FILES
clean:V:
	rm -f $FILES
$FILES:
	for(i in $target){
		hget -o $i $URL/$i
	}