target/linux/kirkwood/base-files/lib/upgrade/linksys.sh

   1 #
   2 # Copyright (C) 2014 OpenWrt.org
   3 #
   4
   5 linksys_get_target_firmware() {
   6         cur_boot_part=`/usr/sbin/fw_printenv -n boot_part`
   7         target_firmware=""
   8         if [ "$cur_boot_part" = "1" ]
   9         then
  10                 # current primary boot - update alt boot
  11                 target_firmware="kernel2"
  12                 fw_setenv boot_part 2
  13                 fw_setenv bootcmd "run altnandboot"
  14         elif [ "$cur_boot_part" = "2" ]
  15         then
  16                 # current alt boot - update primary boot
  17                 target_firmware="kernel1"
  18                 fw_setenv boot_part 1
  19                 fw_setenv bootcmd "run nandboot"
  20         fi
  21
  22         echo "$target_firmware"
  23 }
  24
  25 linksys_get_root_magic() {
  26         (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
  27 }
  28
  29 platform_do_upgrade_linksys() {
  30         local magic_long="$(get_magic_long "$1")"
  31
  32         mkdir -p /var/lock
  33         local part_label="$(linksys_get_target_firmware)"
  34         touch /var/lock/fw_printenv.lock
  35
  36         if [ ! -n "$part_label" ]
  37         then
  38                 echo "cannot find target partition"
  39                 exit 1
  40         fi
  41
  42         local target_mtd=$(find_mtd_part $part_label)
  43
  44         [ "$magic_long" = "73797375" ] && {
  45                 CI_KERNPART="$part_label"
  46                 if [ "$part_label" = "kernel1" ]
  47                 then
  48                         CI_UBIPART="rootfs1"
  49                 else
  50                         CI_UBIPART="rootfs2"
  51                 fi
  52
  53                 nand_upgrade_tar "$1"
  54         }
  55         [ "$magic_long" = "27051956" ] && {
  56                 # check firmwares' rootfs types
  57                 local target_mtd=$(find_mtd_part $part_label)
  58                 local oldroot="$(linksys_get_root_magic $target_mtd)"
  59                 local newroot="$(linksys_get_root_magic "$1")"
  60
  61                 if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
  62                 # we're upgrading from a firmware with UBI to one with UBI
  63                 then
  64                         # erase everything to be safe
  65                         mtd erase $part_label
  66                         get_image "$1" | mtd -n write - $part_label
  67                 else
  68                         get_image "$1" | mtd write - $part_label
  69                 fi
  70         }
  71 }
  72
  73 linksys_preupgrade() {
  74         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/sbin/fw_printenv /usr/sbin/fw_setenv"
  75         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /bin/mkdir /bin/touch"
  76         export RAMFS_COPY_DATA="${RAMFS_COPY_DATA} /etc/fw_env.config /var/lock/fw_printenv.lock"
  77 }
  78
  79 append sysupgrade_pre_upgrade linksys_preupgrade