3 # Copyright © 2008 Andres Salomon <dilinger@queued.net>
5 # This file is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 # see the update-nand format definition
20 # http://wiki.laptop.org/go/OFW_NAND_FLASH_Updater
27 echo "Usage: $0 <root directory> <img>" 1>&2
32 if [ "$#" != "2" ]; then
39 if [ "${IMG_NAME}" == "${IMG_NAME/.img/.dat}" ]; then
40 DAT_NAME=${IMG_NAME}.dat
42 DAT_NAME=${IMG_NAME/.img/.dat}
45 if [ ! -d "${ROOT_DIR}" ]; then
47 echo "*** Unable to find root directory!" 1>&2
51 check_for_cmds mkfs.jffs2 sumtool || exit 1
52 create_fstab ${ROOT_DIR} jffs2
53 create_ofwboot ${ROOT_DIR} jffs2
60 # XXX: do we want to switch to lzo? (mkfs.jffs2 -X lzo)
61 mkfs.jffs2 -n -e128KiB -r ${root_dir} -o ${out}.pre
62 sumtool -n -p -e 128KiB -i ${out}.pre -o ${out}
69 eblocks=$((`stat --printf "%s\n" $f` / (128*1024)))
70 for b in $(seq 0 $(($eblocks - 1))); do
71 sha=$(dd status=noxfer bs=128KiB skip=$b count=1 if=$f 2>/dev/null | sha256sum | cut -d- -f1)
72 echo "eblock: `printf '%x' $b` sha256 $sha" >> ${IMG_NAME}
78 # 0x190 * 128KiB = 50MiB boot, and the rest for root
82 partitions: boot 190 root -1
87 cat >>${IMG_NAME}<<EOF
94 cat >>${IMG_NAME}<<EOF
100 # create the boot partition
101 ln -s . ${ROOT_DIR}/boot/boot
102 create_jffs2 ${ROOT_DIR}/boot _boot.img
103 rm -f ${ROOT_DIR}/boot/boot
105 # create the root partition
106 mv ${ROOT_DIR}/boot _boot
107 mkdir ${ROOT_DIR}/boot
108 create_jffs2 ${ROOT_DIR} _root.img
109 rmdir ${ROOT_DIR}/boot
110 mv _boot ${ROOT_DIR}/boot
112 # concat partitions, finish up
114 cat _boot.img _root.img > ${DAT_NAME}
115 rm -f _boot.img _root.img