target/linux/x86/base-files/lib/upgrade/platform.sh

   1 USE_REFRESH=1
   2
   3 platform_check_image() {
   4         [ "$ARGC" -gt 1 ] && return 1
   5
   6         case "$(get_magic_word "$1")" in
   7                 eb48) return 0;;
   8                 *)
   9                         echo "Invalid image type"
  10                         return 1
  11                 ;;
  12         esac
  13 }
  14
  15 platform_do_upgrade() {
  16         local ROOTFS
  17         sync
  18         grep -q -e "jffs2" -e "squashfs" /proc/cmdline \
  19                 && ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "block2mtd.block2mtd") { print substr($2,1,index($2, ",")-1) }' < /proc/cmdline)" \
  20                 || ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "root") { print $2 ) }' < /proc/cmdline)"
  21         [ -b ${ROOTFS%[0-9]} ] && get_image "$1" > ${ROOTFS%[0-9]}
  22 }
  23
  24 x86_prepare_ext2() {
  25         # if we're running from ext2, we need to make sure that we have a mtd
  26         # partition that points to the active rootfs partition.
  27         # however this only matters if we actually need to preserve the config files
  28         [ "$SAVE_CONFIG" -eq 1 ] || return 0
  29         grep rootfs /proc/mtd >/dev/null || {
  30                 echo /dev/hda2,65536,rootfs > /sys/module/block2mtd/parameters/block2mtd
  31         }
  32 }
  33 append sysupgrade_pre_upgrade x86_prepare_ext2