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