target/linux/ipq806x/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 [ "$cur_boot_part" = "1" ]
   9         then
  10                 # current primary boot - update alt boot
  11                 target_firmware="kernel2"
  12                 fw_setenv boot_part 2
  13                 #In EA8500 bootcmd is always "bootipq", so don't change
  14                 #fw_setenv bootcmd "run altnandboot"
  15         elif [ "$cur_boot_part" = "2" ]
  16         then
  17                 # current alt boot - update primary boot
  18                 target_firmware="kernel1"
  19                 fw_setenv boot_part 1
  20                 #In EA8500 bootcmd is always "bootipq", so don't change
  21                 #fw_setenv bootcmd "run nandboot"
  22         fi
  23
  24         # re-enable recovery so we get back if the new firmware is broken
  25         fw_setenv auto_recovery yes
  26
  27         echo "$target_firmware"
  28 }
  29
  30 linksys_get_root_magic() {
  31         (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
  32 }
  33
  34 platform_do_upgrade_linksys() {
  35         local magic_long="$(get_magic_long "$1")"
  36
  37         mkdir -p /var/lock
  38         local part_label="$(linksys_get_target_firmware)"
  39         touch /var/lock/fw_printenv.lock
  40
  41         if [ ! -n "$part_label" ]
  42         then
  43                 echo "cannot find target partition"
  44                 exit 1
  45         fi
  46
  47         local target_mtd=$(find_mtd_part $part_label)
  48
  49         [ "$magic_long" = "73797375" ] && {
  50                 CI_KERNPART="$part_label"
  51                 if [ "$part_label" = "kernel1" ]
  52                 then
  53                         CI_UBIPART="rootfs1"
  54                 else
  55                         CI_UBIPART="rootfs2"
  56                 fi
  57
  58                 nand_upgrade_tar "$1"
  59         }
  60         [ "$magic_long" = "27051956" ] && {
  61                 # check firmwares' rootfs types
  62                 local target_mtd=$(find_mtd_part $part_label)
  63                 local oldroot="$(linksys_get_root_magic $target_mtd)"
  64                 local newroot="$(linksys_get_root_magic "$1")"
  65
  66                 if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
  67                 # we're upgrading from a firmware with UBI to one with UBI
  68                 then
  69                         # erase everything to be safe
  70                         mtd erase $part_label
  71                         get_image "$1" | mtd -n write - $part_label
  72                 else
  73                         get_image "$1" | mtd write - $part_label
  74                 fi
  75         }
  76 }
  77
  78 linksys_preupgrade() {
  79         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/sbin/fw_printenv /usr/sbin/fw_setenv"
  80         export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /bin/mkdir /bin/touch"
  81         export RAMFS_COPY_DATA="${RAMFS_COPY_DATA} /etc/fw_env.config /var/lock/fw_printenv.lock"
  82
  83         [ -f /tmp/sysupgrade.tgz ] && {
  84                 cp /tmp/sysupgrade.tgz /tmp/syscfg/sysupgrade.tgz
  85         }
  86 }
  87
  88 append sysupgrade_pre_upgrade linksys_preupgrade