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- #!/usr/bin/env bash
- # Copyright (C) 2006-2012 OpenWrt.org
- set -x
- [ $# -eq 5 -o $# -eq 6 ] || {
- echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image> [<align>]"
- exit 1
- }
- OUTPUT="$1"
- KERNELSIZE="$2"
- KERNELDIR="$3"
- ROOTFSSIZE="$4"
- ROOTFSIMAGE="$5"
- ALIGN="$6"
- rm -f "$OUTPUT"
- head=16
- sect=63
- cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
- # create partition table
- set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE}`
- KERNELOFFSET="$(($1 / 512))"
- KERNELSIZE="$(($2 / 512))"
- ROOTFSOFFSET="$(($3 / 512))"
- ROOTFSSIZE="$(($4 / 512))"
- BLOCKS="$((($KERNELSIZE / 2) - 1))"
- [ -n "$PADDING" ] && dd if=/dev/zero of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc count="$ROOTFSSIZE"
- dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
- [ -n "$NOGRUB" ] && exit 0
- genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel"
- dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc
- rm -f "$OUTPUT.kernel"
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