ref: d116b2d47ca4d0e5895c360f4cbcb51d6a19e0da
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
}