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

   1 #
   2 # Copyright (C) 2014-2015 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         # re-enable recovery so we get back if the new firmware is broken
  23         fw_setenv auto_recovery yes
  24
  25         echo "$target_firmware"
  26 }
  27
  28 linksys_get_root_magic() {
  29         (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
  30 }
  31
  32 platform_do_upgrade_linksys() {
  33         local magic_long="$(get_magic_long "$1")"
  34
  35         mkdir -p /var/lock
  36         local part_label="$(linksys_get_target_firmware)"
  37         touch /var/lock/fw_printenv.lock
  38
  39         if [ ! -n "$part_label" ]
  40         then
  41                 echo "cannot find target partition"
  42                 exit 1
  43         fi
  44
  45         local target_mtd=$(find_mtd_part $part_label)
  46
  47         [ "$magic_long" = "73797375" ] && {
  48                 CI_KERNPART="$part_label"
  49                 if [ "$part_label" = "kernel1" ]
  50                 then
  51                         CI_UBIPART="rootfs1"
  52                 else
  53                         CI_UBIPART="rootfs2"
  54                 fi
  55
  56                 nand_upgrade_tar "$1"
  57         }
  58         [ "$magic_long" = "27051956" ] && {
  59                 # check firmwares' rootfs types
  60                 local target_mtd=$(find_mtd_part $part_label)
  61                 local oldroot="$(linksys_get_root_magic $target_mtd)"
  62                 local newroot="$(linksys_get_root_magic "$1")"
  63
  64                 if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
  65                 # we're upgrading from a firmware with UBI to one with UBI
  66                 then
  67                         # erase everything to be safe
  68                         mtd erase $part_label
  69                         get_image "$1" | mtd -n write - $part_label
  70                 else
  71                         get_image "$1" | mtd write - $part_label
  72                 fi
  73         }
  74 }
  75
  76 linksys_preupgrade() {
  77         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/sbin/fw_printenv /usr/sbin/fw_setenv"
  78         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /bin/mkdir /bin/touch"
  79         export RAMFS_COPY_DATA="${RAMFS_COPY_DATA} /etc/fw_env.config /var/lock/fw_printenv.lock"
  80
  81         [ -f /tmp/sysupgrade.tgz ] && {
  82                 cp /tmp/sysupgrade.tgz /tmp/syscfg/sysupgrade.tgz
  83         }
  84 }
  85
  86 append sysupgrade_pre_upgrade linksys_preupgrade