| 1 | #!/usr/bin/env bash |
| 2 | # Copyright (C) 2006-2012 OpenWrt.org |
| 3 | set -x |
| 4 | [ $# == 5 -o $# == 6 ] || { |
| 5 | echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image> [<align>]" |
| 6 | exit 1 |
| 7 | } |
| 8 | |
| 9 | OUTPUT="$1" |
| 10 | KERNELSIZE="$2" |
| 11 | KERNELDIR="$3" |
| 12 | ROOTFSSIZE="$4" |
| 13 | ROOTFSIMAGE="$5" |
| 14 | ALIGN="$6" |
| 15 | |
| 16 | rm -f "$OUTPUT" |
| 17 | |
| 18 | head=16 |
| 19 | sect=63 |
| 20 | cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512))) |
| 21 | |
| 22 | # create partition table |
| 23 | set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN}` |
| 24 | |
| 25 | KERNELOFFSET="$(($1 / 512))" |
| 26 | KERNELSIZE="$(($2 / 512))" |
| 27 | ROOTFSOFFSET="$(($3 / 512))" |
| 28 | ROOTFSSIZE="$(($4 / 512))" |
| 29 | |
| 30 | BLOCKS="$((($KERNELSIZE / 2) - 1))" |
| 31 | |
| 32 | [ -n "$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 |
| 34 | |
| 35 | [ -n "$NOGRUB" ] && exit 0 |
| 36 | |
| 37 | genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel" |
| 38 | dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc |
| 39 | rm -f "$OUTPUT.kernel" |
| 40 | |
