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#!/bin/bash
# Copyright (C) 2015 "IoT.bzh"
# Authors: Jose Bollo, Stephane Desneux, Yannick Gicquel
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -e
usage() {
echo "Usage: $0 <image.rootfs.tar.*> [output_file_or_dir [size_in_GB]]" >&2
echo "<image tarball> is usually located in \$builddir/tmp/deploy/images" >&2
exit 1
}
IMGTAR=$1
[[ ! -f $IMGTAR ]] && { echo "Image file not found." >&2; usage; }
if [[ $IMGTAR =~ ^.*\.(rootfs.tar\..*)$ ]]; then
ext=${BASH_REMATCH[1]}
IMGBASE=$(basename $IMGTAR .$ext)
else
echo "Invalid image archive (not a tarball?)" >&2; usage;
fi
OUTPUT=${2:-.}
if [[ -z $OUTPUT ]]; then
echo "Invalid output file/dir." >&2
usage
elif [[ -d $OUTPUT ]]; then
# output is a dir, use input file for name
OUTPUT=$OUTPUT/$IMGBASE.raw
fi
SIZE=${3:-2} # size in giga
initdisk() {
local size=$1 file=$2 ; #size is in giga
{
head -c 446 /dev/zero
printf '\x00\x00\x00\x00\x83\x00\x00\x00\x01\x00\x00\x00'
printf $(printf %08x $(( ( (size * 1073741824) - 1) / 512 )) |
sed 's:\(..\)\(..\)\(..\)\(..\):\\x\4\\x\3\\x\2\\x\1:')
head -c 48 /dev/zero
printf '\x55\xAA'
} > $file
dd if=/dev/zero of=$file bs=1 count=0 seek=${size}G
}
make_image() {
local imgtar=$1
local ydir=$(dirname $imgtar)
local machine=$(cd $ydir && basename $(pwd -P))
local image=$2
local size=$3
local tmpd=/tmp/dir$$
echo
echo
echo "Creating the image $image ..."
[[ -f $image ]] && rm $image
[[ -f $image.tar.xz ]] && rm $image.tar.xz
initdisk $size $image
[[ ! -e /dev/loop-control ]] && sudo mknod /dev/loop-control c 10 237
for i in $(seq 0 9); do
[[ ! -b /dev/loop$i ]] && sudo mknod /dev/loop$i b 7 $i
done
local loop=$(sudo losetup -f)
sudo losetup -o 512 $loop $image
sudo mke2fs -t ext3 $loop
sudo mkdir $tmpd
sudo mount $loop $tmpd
echo "Extracting image tarball..."
sudo tar pxf $imgtar -C $tmpd --xattrs-include='*'
echo "Detected machine $machine"
case $machine in
porter)
sudo cp -v $ydir/uImage+dtb $tmpd/boot
;;
m3ulcb|h3ulcb)
sudo cp -v $ydir/Image-*-$machine.dtb $tmpd/boot
;;
*)
echo "Unknown machine '$machine': don't know how to handle kernel ..." >&2
;;
esac
sudo umount $loop
sudo losetup -d $loop
sudo rmdir $tmpd
if which bmaptool &>/dev/null; then
echo "Creating bitmap file..."
bmaptool create -o $image.bmap $image
fi
# echo "Creating compressed image $image.bz2 ..."
# BZIP2=$(which pbzip2 2>/dev/null || which bzip2 2>/dev/null)
# $BZIP2 -f -c $image >$image.bz2
echo "Creating compressed image $image.xz..."
xz -0 -T 0 -f -c $image >$image.xz
rm $image
echo "done"
echo
echo
echo
echo
echo
echo "Image $image created!"
echo
echo "On Porter board, this image can be booted with the following uboot environment:"
cat <<'EOF'
---
setenv bootargs_console 'console=ttySC6,38400 ignore_loglevel'
setenv bootargs_video 'vmalloc=384M video=HDMI-A-1:1920x1080-32@60'
setenv bootargs_root 'root=/dev/mmcblk0p1 rootdelay=3 rw rootfstype=ext3 rootwait'
setenv bootmmc '1:1'
setenv bootcmd_sd 'ext4load mmc ${bootmmc} 0x40007fc0 boot/uImage+dtb'
setenv bootcmd 'setenv bootargs ${bootargs_console} ${bootargs_video} ${bootargs_root}; run bootcmd_sd; bootm 0x40007fc0'
saveenv
---
EOF
echo
echo "NB: replace bootmmc value '1:1' with '0:1' or '2:1' to access the good slot"
echo " use 'ext4ls mmc XXX:1' to test access"
}
make_image $IMGTAR $OUTPUT $SIZE
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