ref: d4033c31bb1707cc4d2c6c394a6e1793bc1d6d04
dir: /sys/src/boot/bcm/mkfile/
URL=https://github.com/raspberrypi/firmware/raw/master/boot
FILES=bootcode.bin fixup_cd.dat start_cd.elf LICENCE.broadcom
all:V: $FILES
clean:V:
rm -f $FILES
$FILES:
for(i in $target){
hget -o $i $URL/$i
}