mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 08:21:14 +00:00
fe0081eecf
This allows booting from USB/NVME while keeping SD compatibility. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
131 lines
2.9 KiB
Bash
131 lines
2.9 KiB
Bash
. /lib/functions.sh
|
|
|
|
REQUIRE_IMAGE_METADATA=1
|
|
|
|
# copied from x86's platform.sh
|
|
|
|
platform_check_image() {
|
|
local diskdev partdev diff
|
|
|
|
[ "$#" -gt 1 ] && return 1
|
|
|
|
export_bootdevice && export_partdevice diskdev 0 || {
|
|
echo "Unable to determine upgrade device"
|
|
return 1
|
|
}
|
|
|
|
get_partitions "/dev/$diskdev" bootdisk
|
|
|
|
#extract the boot sector from the image
|
|
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
|
|
|
|
get_partitions /tmp/image.bs image
|
|
|
|
#compare tables
|
|
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
|
|
|
|
rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
|
|
|
|
if [ -n "$diff" ]; then
|
|
echo "Partition layout has changed. Full image will be written."
|
|
ask_bool 0 "Abort" && exit 1
|
|
return 0
|
|
fi
|
|
|
|
return 0;
|
|
}
|
|
|
|
platform_do_upgrade() {
|
|
local diskdev partdev diff
|
|
|
|
export_bootdevice && export_partdevice diskdev 0 || {
|
|
echo "Unable to determine upgrade device"
|
|
return 1
|
|
}
|
|
|
|
sync
|
|
|
|
if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
|
|
get_partitions "/dev/$diskdev" bootdisk
|
|
|
|
#extract the boot sector from the image
|
|
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
|
|
|
|
get_partitions /tmp/image.bs image
|
|
|
|
#compare tables
|
|
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
|
|
else
|
|
diff=1
|
|
fi
|
|
|
|
if [ -n "$diff" ]; then
|
|
get_image "$@" | dd of="/dev/$diskdev" bs=2M conv=fsync
|
|
|
|
# Separate removal and addtion is necessary; otherwise, partition 1
|
|
# will be missing if it overlaps with the old partition 2
|
|
partx -d - "/dev/$diskdev"
|
|
partx -a - "/dev/$diskdev"
|
|
|
|
return 0
|
|
fi
|
|
|
|
#iterate over each partition from the image and write it to the boot disk
|
|
while read part start size; do
|
|
if export_partdevice partdev $part; then
|
|
echo "Writing image to /dev/$partdev..."
|
|
get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
|
|
else
|
|
echo "Unable to find partition $part device, skipped."
|
|
fi
|
|
done < /tmp/partmap.image
|
|
|
|
#copy partition uuid
|
|
echo "Writing new UUID to /dev/$diskdev..."
|
|
get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
|
|
}
|
|
|
|
bcm27xx_set_root_part() {
|
|
local root_part
|
|
|
|
if [ -f "/boot/partuuid.txt" ]; then
|
|
root_part="PARTUUID=$(cat "/boot/partuuid.txt")-02"
|
|
else
|
|
root_part="/dev/mmcblk0p2"
|
|
fi
|
|
|
|
sed -i "s#\broot=[^ ]*#root=${root_part}#g" "/boot/cmdline.txt"
|
|
}
|
|
|
|
platform_copy_config() {
|
|
local partdev
|
|
|
|
if export_partdevice partdev 1; then
|
|
mkdir -p /boot
|
|
[ -f /boot/kernel*.img ] || mount -t vfat -o rw,noatime "/dev/$partdev" /boot
|
|
|
|
tar -C / -zxvf "$UPGRADE_BACKUP" boot/cmdline.txt boot/config.txt
|
|
bcm27xx_set_root_part
|
|
|
|
local backup_tmp="/tmp/backup-update"
|
|
mkdir -p $backup_tmp
|
|
tar -C $backup_tmp -zxvf $UPGRADE_BACKUP
|
|
cp -af /boot/cmdline.txt $backup_tmp/boot/
|
|
|
|
local work_dir=$(pwd)
|
|
cd $backup_tmp
|
|
tar -C $backup_tmp -zcvf /boot/$BACKUP_FILE *
|
|
cd $work_dir
|
|
|
|
sync
|
|
umount /boot
|
|
fi
|
|
}
|
|
|
|
platform_restore_backup() {
|
|
local TAR_V=$1
|
|
|
|
tar -C / -x${TAR_V}zf "$CONF_RESTORE"
|
|
bcm27xx_set_root_part
|
|
}
|