target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh

   1 linksys_get_target_firmware() {
   2         local cur_boot_part mtd_ubi0
   3
   4         cur_boot_part="$(/usr/sbin/fw_printenv -n boot_part)"
   5         if [ -z "${cur_boot_part}" ]; then
   6                 mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
   7                 case "$(grep -E "^mtd${mtd_ubi0}:" /proc/mtd | cut -d '"' -f 2)" in
   8                 kernel|rootfs)
   9                         cur_boot_part=1
  10                         ;;
  11                 alt_kernel|alt_rootfs)
  12                         cur_boot_part=2
  13                         ;;
  14                 esac
  15                 >&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
  16                         "${cur_boot_part}" "${mtd_ubi0}"
  17         fi
  18
  19         # OEM U-Boot for EA6350v3, EA8300 and MR8300; bootcmd=
  20         #  if test $auto_recovery = no;
  21         #      then bootipq;
  22         #  elif test $boot_part = 1;
  23         #      then run bootpart1;
  24         #      else run bootpart2;
  25         #  fi
  26
  27         case "$cur_boot_part" in
  28         1)
  29                 fw_setenv -s - <<-EOF
  30                         boot_part 2
  31                         auto_recovery yes
  32                 EOF
  33                 printf "alt_kernel"
  34                 return
  35                 ;;
  36         2)
  37                 fw_setenv -s - <<-EOF
  38                         boot_part 1
  39                         auto_recovery yes
  40                 EOF
  41                 printf "kernel"
  42                 return
  43                 ;;
  44         *)
  45                 return
  46                 ;;
  47         esac
  48 }
  49
  50 linksys_is_factory_image() {
  51         local board=$(board_name)
  52         board=${board##*,}
  53
  54         # check matching footer signature
  55         tail -c 256 $1 | grep -q -i "\.LINKSYS\.........${board}"
  56 }
  57
  58 platform_do_upgrade_linksys() {
  59         local magic_long="$(get_magic_long "$1")"
  60
  61         local rm_oem_fw_vols="squashfs ubifs"   # from OEM [alt_]rootfs UBI
  62         local vol
  63
  64         mkdir -p /var/lock
  65         local part_label="$(linksys_get_target_firmware)"
  66         touch /var/lock/fw_printenv.lock
  67
  68         if [ -z "$part_label" ]; then
  69                 echo "cannot find target partition"
  70                 exit 1
  71         fi
  72
  73         local target_mtd=$(find_mtd_part "$part_label")
  74
  75         [ "$magic_long" = "73797375" ] && {
  76                 CI_KERNPART="$part_label"
  77                 if [ "$part_label" = "kernel" ]; then
  78                         CI_UBIPART="rootfs"
  79                 else
  80                         CI_UBIPART="alt_rootfs"
  81                 fi
  82
  83                 local mtdnum="$(find_mtd_index "$CI_UBIPART")"
  84                 if [ ! "$mtdnum" ]; then
  85                         echo "cannot find ubi mtd partition $CI_UBIPART"
  86                         return 1
  87                 fi
  88
  89                 local ubidev="$(nand_find_ubi "$CI_UBIPART")"
  90                 if [ ! "$ubidev" ]; then
  91                         ubiattach -m "$mtdnum"
  92                         sync
  93                         ubidev="$(nand_find_ubi "$CI_UBIPART")"
  94                 fi
  95
  96                 if [ "$ubidev" ]; then
  97                         for vol in $rm_oem_fw_vols; do
  98                                 ubirmvol "/dev/$ubidev" -N "$vol" 2>/dev/null
  99                         done
 100                 fi
 101
 102                 # complete std upgrade
 103                 nand_upgrade_tar "$1"
 104         }
 105
 106         [ "$magic_long" = "27051956" ] && {
 107                 echo "writing \"$1\" image to \"$part_label\""
 108                 get_image "$1" | mtd write - "$part_label"
 109         }
 110
 111         [ "$magic_long" = "d00dfeed" ] && {
 112                 if ! linksys_is_factory_image "$1"; then
 113                         echo "factory image doesn't match device"
 114                         return 1
 115                 fi
 116
 117                 echo "writing \"$1\" factory image to \"$part_label\""
 118                 get_image "$1" | mtd -e "$part_label" write - "$part_label"
 119         }
 120 }