diff options
Diffstat (limited to 'target/linux/armsr/base-files/lib/upgrade')
| -rw-r--r-- | target/linux/armsr/base-files/lib/upgrade/platform.sh | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/target/linux/armsr/base-files/lib/upgrade/platform.sh b/target/linux/armsr/base-files/lib/upgrade/platform.sh new file mode 100644 index 0000000000..8263b9c7e3 --- /dev/null +++ b/target/linux/armsr/base-files/lib/upgrade/platform.sh @@ -0,0 +1,164 @@ +# SPDX-License-Identifier: GPL-2.0-or-later + +RAMFS_COPY_BIN="/usr/sbin/blkid" + +platform_check_image() { + local board=$(board_name) + local diskdev partdev diff + [ "$#" -gt 1 ] && return 1 + + v "Board is ${board}" + + export_bootdevice && export_partdevice diskdev 0 || { + v "platform_check_image: Unable to determine upgrade device" + return 1 + } + + get_partitions "/dev/$diskdev" bootdisk + + v "Extract boot sector from the image" + get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b + + get_partitions /tmp/image.bs image + + #compare tables + diff="$(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 + v "Partition layout has changed. Full image will be written." + ask_bool 0 "Abort" && exit 1 + return 0 + fi +} + +platform_copy_config() { + local partdev parttype=ext4 + + if export_partdevice partdev 2; then + mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt + cp -af "$UPGRADE_BACKUP" "/mnt/$BACKUP_FILE" + umount /mnt + else + v "ERROR: Unable to find partition to copy config data to" + fi + + sleep 5 +} + +# To avoid writing over any firmware +# files (e.g ubootefi.var or firmware/X/ aka EBBR) +# Copy efi/openwrt and efi/boot from the new image +# to the existing ESP +platform_do_upgrade_efi_system_partition() { + local image_file=$1 + local target_partdev=$2 + local image_efisp_start=$3 + local image_efisp_size=$4 + + v "Updating ESP on ${target_partdev}" + NEW_ESP_DIR="/mnt/new_esp_loop" + CUR_ESP_DIR="/mnt/cur_esp" + mkdir "${NEW_ESP_DIR}" + mkdir "${CUR_ESP_DIR}" + + get_image_dd "$image_file" of="/tmp/new_efi_sys_part.img" \ + skip="$image_efisp_start" count="$image_efisp_size" + + mount -t vfat -o loop -o ro /tmp/new_efi_sys_part.img "${NEW_ESP_DIR}" + if [ ! -d "${NEW_ESP_DIR}/efi/boot" ]; then + v "ERROR: Image does not contain EFI boot files (/efi/boot)" + return 1 + fi + + mount -t vfat "/dev/$partdev" "${CUR_ESP_DIR}" + + for d in $(find "${NEW_ESP_DIR}/efi/" -mindepth 1 -maxdepth 1 -type d); do + v "Copying ${d}" + newdir_bname=$(basename "${d}") + rm -rf "${CUR_ESP_DIR}/efi/${newdir_bname}" + cp -r "${d}" "${CUR_ESP_DIR}/efi" + done + + umount "${NEW_ESP_DIR}" + umount "${CUR_ESP_DIR}" +} + +platform_do_upgrade() { + local board=$(board_name) + local diskdev partdev diff + + export_bootdevice && export_partdevice diskdev 0 || { + v "platform_do_upgrade: Unable to determine upgrade device" + return 1 + } + + sync + + if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then + get_partitions "/dev/$diskdev" bootdisk + + v "Extract boot sector from the image" + get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b + + get_partitions /tmp/image.bs image + + #compare tables + diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)" + else + diff=1 + fi + + # Only change the partition table if sysupgrade -p is set, + # otherwise doing so could interfere with embedded "single storage" + # (e.g SoC boot from SD card) setups, as well as other user + # created storage (like uvol) + if [ -n "$diff" ] && [ "${UPGRADE_OPT_SAVE_PARTITIONS}" = "0" ]; then + # Need to remove partitions before dd, otherwise the partitions + # that are added after will have minor numbers offset + partx -d - "/dev/$diskdev" + + get_image_dd "$1" of="/dev/$diskdev" bs=4096 conv=fsync + + # Separate removal and addtion is necessary; otherwise, partition 1 + # will be missing if it overlaps with the old partition 2 + 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 $part; then + v "Writing image to /dev/$partdev..." + if [ "$part" = "1" ]; then + platform_do_upgrade_efi_system_partition \ + $1 $partdev $start $size || return 1 + else + v "Normal partition, doing DD" + get_image_dd "$1" of="/dev/$partdev" ibs=512 obs=1M skip="$start" \ + count="$size" conv=fsync + fi + else + v "Unable to find partition $part device, skipped." + fi + done < /tmp/partmap.image + + local parttype=ext4 + + if (blkid > /dev/null) && export_partdevice partdev 1; then + part_magic_fat "/dev/$partdev" && parttype=vfat + mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt + if export_partdevice partdev 2; then + THIS_PART_BLKID=$(blkid -o value -s PARTUUID "/dev/${partdev}") + v "Setting rootfs PARTUUID=${THIS_PART_BLKID}" + sed -i "s/\(PARTUUID=\)[a-f0-9-]\+/\1${THIS_PART_BLKID}/ig" \ + /mnt/efi/openwrt/grub.cfg + fi + umount /mnt + fi + # Provide time for the storage medium to flush before system reset + # (despite the sync/umount it appears NVMe etc. do it in the background) + sleep 5 +} |