2 # Copyright (C) 2006-2012 OpenWrt.org
4 if [ $# -ne 5 ] && [ $# -ne 6 ]; then
5 echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image> [<align>]"
12 KERNELPARTTYPE
=${KERNELPARTTYPE:-83}
15 ROOTFSPARTTYPE
=${ROOTFSPARTTYPE:-83}
23 # create partition table
24 set $
(ptgen
-o "$OUTPUT" -h $head -s $sect ${GUID:+-g} -t "${KERNELPARTTYPE}" -p "${KERNELSIZE}m${PARTOFFSET:+@$PARTOFFSET}" -t "${ROOTFSPARTTYPE}" -p "${ROOTFSSIZE}m" ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE} ${GUID:+-G $GUID})
26 KERNELOFFSET
="$(($1 / 512))"
28 ROOTFSOFFSET
="$(($3 / 512))"
29 ROOTFSSIZE
="$(($4 / 512))"
31 # Using mcopy -s ... is using READDIR(3) to iterate through the directory
32 # entries, hence they end up in the FAT filesystem in traversal order which
33 # breaks reproducibility.
34 # Implement recursive copy with reproducible order.
38 for entry
in "$1"/* ; do
39 if [ -f "$entry" ]; then
40 mcopy
-i "$OUTPUT.kernel" "$entry" ::"$2"
41 elif [ -d "$entry" ]; then
42 baseentry
="$(basename "$entry")"
43 mmd
-i "$OUTPUT.kernel" ::"$2""$baseentry"
44 dos_dircopy
"$entry" "$2""$baseentry"/
49 [ -n "$PADDING" ] && dd if=/dev
/zero of
="$OUTPUT" bs
=512 seek
="$ROOTFSOFFSET" conv
=notrunc count
="$ROOTFSSIZE"
50 dd if="$ROOTFSIMAGE" of
="$OUTPUT" bs
=512 seek
="$ROOTFSOFFSET" conv
=notrunc
52 if [ -n "$GUID" ]; then
53 [ -n "$PADDING" ] && dd if=/dev
/zero of
="$OUTPUT" bs
=512 seek
="$((ROOTFSOFFSET + ROOTFSSIZE))" conv
=notrunc count
="$sect"
54 mkfs.fat
--invariant -n kernel
-C "$OUTPUT.kernel" -S 512 "$((KERNELSIZE / 1024))"
55 LC_ALL
=C dos_dircopy
"$KERNELDIR" /
57 make_ext4fs
-J -L kernel
-l "$KERNELSIZE" ${SOURCE_DATE_EPOCH:+-T ${SOURCE_DATE_EPOCH}} "$OUTPUT.kernel" "$KERNELDIR"
59 dd if="$OUTPUT.kernel" of
="$OUTPUT" bs
=512 seek
="$KERNELOFFSET" conv
=notrunc
60 rm -f "$OUTPUT.kernel"