-USE_REFRESH=1
+platform_export_bootpart() {
+ local cmdline uuid disk
+
+ if read cmdline < /proc/cmdline; then
+ case "$cmdline" in
+ *block2mtd=*)
+ disk="${cmdline##*block2mtd=}"
+ disk="${disk%%,*}"
+ ;;
+ *root=*)
+ disk="${cmdline##*root=}"
+ disk="${disk%% *}"
+ ;;
+ esac
+
+ case "$disk" in
+ PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
+ uuid="${disk#PARTUUID=}"
+ uuid="${uuid%-02}"
+ for disk in /dev/[hsv]d[a-z]; do
+ set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
+ if [ "$4$3$2$1" = "$uuid" ]; then
+ export BOOTPART="${disk}1"
+ return 0
+ fi
+ done
+ ;;
+ /dev/*)
+ export BOOTPART="${disk%[0-9]}1"
+ return 0
+ ;;
+ esac
+ fi
+
+ return 1
+}
platform_check_image() {
- [ "$ARGC" -gt 1 ] && return 1
+ [ "$#" -gt 1 ] && return 1
case "$(get_magic_word "$1")" in
- eb48) return 0;;
+ eb48|eb63) return 0;;
*)
echo "Invalid image type"
return 1
esac
}
-platform_do_upgrade() {
- local ROOTFS
- sync
- grep -q -e "jffs2" -e "squashfs" /proc/cmdline \
- && ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "block2mtd.block2mtd") { print substr($2,1,index($2, ",")-1) }' < /proc/cmdline)" \
- || ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "root") { print $2 ) }' < /proc/cmdline)"
- [ -b ${ROOTFS%[0-9]} ] && get_image "$1" > ${ROOTFS%[0-9]}
+platform_copy_config() {
+ if [ -b "$BOOTPART" ]; then
+ mount -t ext4 -o rw,noatime "$BOOTPART" /mnt
+ cp -af "$CONF_TAR" /mnt/
+ umount /mnt
+ fi
}
-x86_prepare_ext2() {
- # if we're running from ext2, we need to make sure that we have a mtd
- # partition that points to the active rootfs partition.
- # however this only matters if we actually need to preserve the config files
- [ "$SAVE_CONFIG" -eq 1 ] || return 0
- grep rootfs /proc/mtd >/dev/null || {
- echo /dev/hda2,65536,rootfs > /sys/module/block2mtd/parameters/block2mtd
- }
+get_partitions() { # <device> <filename>
+ local disk="$1"
+ local filename="$2"
+
+ if [ -b "$disk" -o -f "$disk" ]; then
+ echo "Reading partition table from $filename..."
+ partx -r "$disk" -gbo NR,START,SECTORS > "/tmp/partx.$filename"
+ fi
+}
+
+platform_do_upgrade() {
+ platform_export_bootpart
+ disk="${BOOTPART%[0-9]}"
+
+ if [ -b "$disk" ]; then
+ sync
+ if [ "$SAVE_PARTITIONS" = "1" ]; then
+ get_partitions "$disk" bootdisk
+
+
+ #get block size
+ sectors="$(partx -r $disk -gbo SECTORS --nr 1:1)"
+ size="$(partx -r $disk -gbo SIZE --nr 1:1)"
+ ibs="$(($size / $sectors))"
+
+ #extract the boot sector from the image
+ get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
+
+ get_partitions /tmp/image.bs image
+
+ #compare tables
+ diff="$(grep -F -x -v -f /tmp/partx.bootdisk /tmp/partx.image)"
+ if [ -n "$diff" ]; then
+ echo "Partition layout is changed. Full image will be written."
+ ask_bool 0 "Abort" && exit
+
+ get_image "$@" | dd of="$disk" bs=4096 conv=fsync
+ return 0
+ fi
+
+ #iterate over each partition from the image and write it to the boot disk
+ while read part start size; do
+ echo "Writing image to $disk$part..."
+ get_image "$@" | dd of="$disk$part" ibs="$ibs" obs=1M skip="$start" count="$size" conv=fsync
+ done < /tmp/partx.image
+
+ #copy partition uuid
+ echo "Writing new UUID to $disk$part..."
+ get_image "$@" | dd of="$disk" bs=1 skip=440 count=4 seek=440 conv=fsync
+ else
+ get_image "$@" | dd of="$disk" bs=4096 conv=fsync
+ fi
+
+ sleep 1
+ fi
}
-append sysupgrade_pre_upgrade x86_prepare_ext2