mvebu: use ptgen instead of fdisk to make the clearfog image script more portable
[openwrt/openwrt.git] / target / linux / mvebu / image / gen_mvebu_sdcard_img.sh
1 #!/usr/bin/env bash
2 #
3 # Copyright (C) 2016 Josua Mayer
4 #
5 # This program is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU General Public License
7 # as published by the Free Software Foundation; either version 2
8 # of the License, or (at your option) any later version.
9 #
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
14 #
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 #
19
20 usage() {
21 echo "$0 <sectors> <outfile> <bootloader> [<type_partitionN> <sectors_partitionN> <img_partitionN>]?"
22 }
23
24 # always require first 3 arguments
25 # then in pairs up to 8 more for a total of up to 4 partitions
26 if [ $# -lt 3 ] || [ $# -gt 15 ] || [ $(($#%3)) -ne 0 ]; then
27 usage
28 exit 1
29 fi
30
31 set -e
32
33 # parameters
34 IMGSIZE=$1; shift
35 OUTFILE="$1"; shift
36 BOOTLOADER="$1"; shift
37
38 # generate image file
39 printf "Creating $OUTFILE from /dev/zero: "
40 dd if=/dev/zero of="$OUTFILE" bs=512 count=1 >/dev/null
41 printf "Done\n"
42
43 while [ "$#" -ge 3 ]; do
44 ptgen_args="$ptgen_args -p $(($2 / 2)) -S 0x$1"
45 parts="$parts$3 "
46 shift; shift; shift
47 done
48
49 head=16
50 sect=63
51
52 # create real partition table using fdisk
53 printf "Creating partition table: "
54 set `ptgen -o "$OUTFILE" -h $head -s $sect -l 1024 $ptgen_args`
55 printf "Done\n"
56
57 # install bootloader
58 printf "Writing bootloader: "
59 dd of="$OUTFILE" if="$BOOTLOADER" bs=512 seek=1 conv=notrunc 2>/dev/null
60 printf "Done\n"
61
62 i=1
63 while [ "$#" -ge 2 ]; do
64 img="${parts%% *}"
65 parts="${parts#* }"
66
67 printf "Writing %s to partition %i: " "$img" $i
68 dd if="$img" of="$OUTFILE" bs=512 seek=$(($1 / 512)) conv=notrunc 2>/dev/null
69 printf "Done\n"
70
71 let i=i+1
72 shift; shift
73 done