config/scripts/create_prima_disk.sh

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2019-05-17 12:49:42 +02:00
#!/bin/bash
bootimg=""
rootimg=""
qemuroot=""
while getopts "b:r:q:" opt; do
case $opt in
b)
bootimg=$OPTARG
;;
r)
rootimg=$OPTARG
;;
q)
qemuroot=$OPTARG
;;
esac
done
create_empty_disk()
{
img_name=$1
echo "Creating disk image $img_name"
dd if=/dev/zero of=$img_name bs=4M count=300 > /dev/null
}
create_loopback()
{
img_name=$1
device=$(losetup -f)
sudo losetup $device $img_name
echo $device
}
get_partition_name()
{
echo "/dev/mapper/${1##*/}p"$2
}
format_sdcard()
{
device=$1
img_name=$2
system_size="+1100M"
boot_size="+70M"
set +e
mounts=`cat /proc/mounts | grep "$device" | cut -d' ' -f1`
set -e
if [ "$mounts" != "" ];then
for i in $mounts;
do
sudo umount $i -l
done
fi
echo "making partitions on ${device}..."
set +e
sleep 1
sudo fdisk $device > /tmp/log << EOF
n
p
1
$boot_size
n
p
2
$system_size
t
1
c
a
1
w
EOF
set -e
#With loop block devices, new partition are not automatically associated to a new loop partition. kpartx do that for us !
if [[ $device == *"loop"* ]]; then
sudo losetup -d $device
sudo kpartx -a $img_name
fi
echo "$(get_partition_name $device 1) formatting..."
part=$(get_partition_name $device 1)
sudo dd if=$bootimg of=$part > /dev/null
echo "$(get_partition_name $device 2) formatting... (takes some minutes)"
part=$(get_partition_name $device 2)
sudo dd if=$rootimg of=$part > /dev/null
tmp_dir=$(mktemp -d)
sudo mount $part $tmp_dir
sudo cp -r $qemuroot/target/lib/modules/4.9.6/ ${tmp_dir}/lib/modules
sudo umount $tmp_dir
rm -r $tmp_dir
}
name=disk.img
create_empty_disk $name
device=$(create_loopback $name)
format_sdcard ${device} ${name}
sudo kpartx -d ${name}