2 # Copyright (C) 2006-2012 OpenWrt.org
4 [ $# == 5 -o $# == 6 ] || {
5 echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image> [<align>]"
20 cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
22 # create partition table
23 set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN}`
25 KERNELOFFSET="$(($1 / 512))"
26 KERNELSIZE="$(($2 / 512))"
27 ROOTFSOFFSET="$(($3 / 512))"
28 ROOTFSSIZE="$(($4 / 512))"
30 BLOCKS="$((($KERNELSIZE / 2) - 1))"
32 [ -n "$PADDING" ] && dd if=/dev/zero of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc count="$ROOTFSSIZE"
33 dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
35 [ -n "$NOGRUB" ] && exit 0
37 genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel"
38 dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc
39 rm -f "$OUTPUT.kernel"