package/system/procd/files/nand.sh

   1 #!/bin/sh
   2 # Copyright (C) 2014 OpenWrt.org
   3 #
   4
   5 . /lib/functions.sh
   6
   7 # 'kernel' partition on NAND contains the kernel
   8 CI_KERNPART="kernel"
   9
  10 # 'ubi' partition on NAND contains UBI
  11 CI_UBIPART="ubi"
  12
  13 nand_find_volume() {
  14         local ubidevdir ubivoldir
  15         ubidevdir="/sys/devices/virtual/ubi/$1"
  16         [ ! -d "$ubidevdir" ] && return 1
  17         for ubivoldir in $ubidevdir/${1}_*; do
  18                 [ ! -d "$ubivoldir" ] && continue
  19                 if [ "$( cat $ubivoldir/name )" = "$2" ]; then
  20                         basename $ubivoldir
  21                         return 0
  22                 fi
  23         done
  24 }
  25
  26 nand_find_ubi() {
  27         local ubidevdir ubidev mtdnum
  28         mtdnum="$( find_mtd_index $1 )"
  29         [ ! "$mtdnum" ] && return 1
  30         for ubidevdir in /sys/devices/virtual/ubi/ubi*; do
  31                 [ ! -d "$ubidevdir" ] && continue
  32                 cmtdnum="$( cat $ubidevdir/mtd_num )"
  33                 [ ! "$mtdnum" ] && continue
  34                 if [ "$mtdnum" = "$cmtdnum" ]; then
  35                         ubidev=$( basename $ubidevdir )
  36                         echo $ubidev
  37                         return 0
  38                 fi
  39         done
  40 }
  41
  42 nand_get_magic_long() {
  43         dd if="$1" skip=$2 bs=4 count=1 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
  44 }
  45
  46 get_magic_long_tar() {
  47         ( tar xf $1 $2 -O | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2> /dev/null
  48 }
  49
  50 identify_magic() {
  51         local magic=$1
  52         case "$magic" in
  53                 "55424923")
  54                         echo "ubi"
  55                         ;;
  56                 "31181006")
  57                         echo "ubifs"
  58                         ;;
  59                 "68737173")
  60                         echo "squashfs"
  61                         ;;
  62                 "d00dfeed")
  63                         echo "fit"
  64                         ;;
  65                 "4349"*)
  66                         echo "combined"
  67                         ;;
  68                 *)
  69                         echo "unknown $magic"
  70                         ;;
  71         esac
  72 }
  73
  74
  75 identify() {
  76         identify_magic $(nand_get_magic_long "$1" "${2:-0}")
  77 }
  78
  79 identify_tar() {
  80         identify_magic $(get_magic_long_tar "$1" "$2")
  81 }
  82
  83 nand_restore_config() {
  84         sync
  85         local ubidev=$( nand_find_ubi $CI_UBIPART )
  86         local ubivol="$( nand_find_volume $ubidev rootfs_data )"
  87         [ ! "$ubivol" ] &&
  88                 ubivol="$( nand_find_volume $ubidev rootfs )"
  89         mkdir /tmp/new_root
  90         if ! mount -t ubifs /dev/$ubivol /tmp/new_root; then
  91                 echo "mounting ubifs $ubivol failed"
  92                 rmdir /tmp/new_root
  93                 return 1
  94         fi
  95         mv "$1" "/tmp/new_root/sysupgrade.tgz"
  96         umount /tmp/new_root
  97         sync
  98         rmdir /tmp/new_root
  99 }
 100
 101 nand_upgrade_prepare_ubi() {
 102         local rootfs_length="$1"
 103         local rootfs_type="$2"
 104         local has_kernel="${3:-0}"
 105         local has_env="${4:-0}"
 106
 107         local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
 108         if [ ! "$mtdnum" ]; then
 109                 echo "cannot find ubi mtd partition $CI_UBIPART"
 110                 return 1
 111         fi
 112
 113         local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
 114         if [ ! "$ubidev" ]; then
 115                 ubiattach -m "$mtdnum"
 116                 sync
 117                 ubidev="$( nand_find_ubi "$CI_UBIPART" )"
 118         fi
 119
 120         if [ ! "$ubidev" ]; then
 121                 ubiformat /dev/mtd$mtdnum -y
 122                 ubiattach -m "$mtdnum"
 123                 sync
 124                 ubidev="$( nand_find_ubi "$CI_UBIPART" )"
 125                 [ "$has_env" -gt 0 ] && {
 126                         ubimkvol /dev/$ubidev -n 0 -N ubootenv -s 1MiB
 127                         ubimkvol /dev/$ubidev -n 1 -N ubootenv2 -s 1MiB
 128                 }
 129         fi
 130
 131         local kern_ubivol="$( nand_find_volume $ubidev kernel )"
 132         local root_ubivol="$( nand_find_volume $ubidev rootfs )"
 133         local data_ubivol="$( nand_find_volume $ubidev rootfs_data )"
 134
 135         # remove ubiblock device of rootfs
 136         local root_ubiblk="ubiblock${root_ubivol:3}"
 137         if [ "$root_ubivol" -a -e "/dev/$root_ubiblk" ]; then
 138                 echo "removing $root_ubiblk"
 139                 if ! ubiblock -r /dev/$root_ubivol; then
 140                         echo "cannot remove $root_ubiblk"
 141                         return 1;
 142                 fi
 143         fi
 144
 145         # kill volumes
 146         [ "$kern_ubivol" ] && ubirmvol /dev/$ubidev -N kernel || true
 147         [ "$root_ubivol" ] && ubirmvol /dev/$ubidev -N rootfs || true
 148         [ "$data_ubivol" ] && ubirmvol /dev/$ubidev -N rootfs_data || true
 149
 150         # update kernel
 151         if [ "$has_kernel" = "1" ]; then
 152                 if ! ubimkvol /dev/$ubidev -N kernel -s $kernel_length; then
 153                         echo "cannot create kernel volume"
 154                         return 1;
 155                 fi
 156         fi
 157
 158         # update rootfs
 159         local root_size_param
 160         if [ "$rootfs_type" = "ubifs" ]; then
 161                 root_size_param="-m"
 162         else
 163                 root_size_param="-s $rootfs_length"
 164         fi
 165         if ! ubimkvol /dev/$ubidev -N rootfs $root_size_param; then
 166                 echo "cannot create rootfs volume"
 167                 return 1;
 168         fi
 169
 170         # create rootfs_data for non-ubifs rootfs
 171         if [ "$rootfs_type" != "ubifs" ]; then
 172                 if ! ubimkvol /dev/$ubidev -N rootfs_data -m; then
 173                         echo "cannot initialize rootfs_data volume"
 174                         return 1
 175                 fi
 176         fi
 177         sync
 178         return 0
 179 }
 180
 181 nand_do_upgrade_success() {
 182         local conf_tar="/tmp/sysupgrade.tgz"
 183
 184         sync
 185         [ -f "$conf_tar" ] && nand_restore_config "$conf_tar"
 186         echo "sysupgrade successful"
 187         reboot -f
 188 }
 189
 190 nand_upgrade_ubinized() {
 191         local ubi_file="$1"
 192         local mtdnum="$(find_mtd_index "$CI_UBIPART")"
 193
 194         [ ! "$mtdnum" ] && {
 195                 CI_UBIPART="rootfs"
 196                 mtdnum="$(find_mtd_index "$CI_UBIPART")"
 197         }
 198
 199         if [ ! "$mtdnum" ]; then
 200                 echo "cannot find mtd device $CI_UBIPART"
 201                 reboot -f
 202         fi
 203
 204         local mtddev="/dev/mtd${mtdnum}"
 205         ubidetach -p "${mtddev}" || true
 206         sync
 207         ubiformat "${mtddev}" -y -f "${ubi_file}"
 208         ubiattach -p "${mtddev}"
 209         nand_do_upgrade_success
 210 }
 211
 212 nand_upgrade_ubifs() {
 213         local rootfs_length=`(cat $1 | wc -c) 2> /dev/null`
 214
 215         nand_upgrade_prepare_ubi "$rootfs_length" "ubifs" "0" "0"
 216
 217         local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
 218         local root_ubivol="$(nand_find_volume $ubidev rootfs)"
 219         ubiupdatevol /dev/$root_ubivol -s $rootfs_length $1
 220
 221         nand_do_upgrade_success
 222 }
 223
 224 nand_upgrade_tar() {
 225         local tar_file="$1"
 226         local board_name="$(cat /tmp/sysinfo/board_name)"
 227         local kernel_mtd="$(find_mtd_index $CI_KERNPART)"
 228
 229         local kernel_length=`(tar xf $tar_file sysupgrade-$board_name/kernel -O | wc -c) 2> /dev/null`
 230         local rootfs_length=`(tar xf $tar_file sysupgrade-$board_name/root -O | wc -c) 2> /dev/null`
 231
 232         local rootfs_type="$(identify_tar "$tar_file" sysupgrade-$board_name/root)"
 233
 234         local has_kernel=1
 235         local has_env=0
 236
 237         [ "kernel_length" = 0 -o -z "$kernel_mtd" ] || {
 238                 tar xf $tar_file sysupgrade-$board_name/kernel -O | mtd write - $CI_KERNPART
 239         }
 240         [ "kernel_length" = 0 -o ! -z "$kernel_mtd" ] && has_kernel=0
 241
 242         nand_upgrade_prepare_ubi "$rootfs_length" "$rootfs_type" "$has_kernel" "$has_env"
 243
 244         local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
 245         [ "$has_kernel" = "1" ] && {
 246                 local kern_ubivol="$(nand_find_volume $ubidev kernel)"
 247                 tar xf $tar_file sysupgrade-$board_name/kernel -O | \
 248                         ubiupdatevol /dev/$kern_ubivol -s $kernel_length -
 249         }
 250
 251         local root_ubivol="$(nand_find_volume $ubidev rootfs)"
 252         tar xf $tar_file sysupgrade-$board_name/root -O | \
 253                 ubiupdatevol /dev/$root_ubivol -s $rootfs_length -
 254
 255         nand_do_upgrade_success
 256 }
 257
 258 nand_do_upgrade_stage2() {
 259         local file_type=$(identify $1)
 260
 261         [ ! "$(find_mtd_index "$CI_UBIPART")" ] && CI_UBIPART="rootfs"
 262
 263         [ "$file_type" == "ubi" ] && nand_upgrade_ubinized $1
 264         [ "$file_type" == "ubifs" ] && nand_upgrade_ubifs $1
 265         nand_upgrade_tar $1
 266 }
 267
 268 nand_upgrade_stage2() {
 269         [ $1 = "nand" ] && {
 270                 [ -f "$2" ] && {
 271                         touch /tmp/sysupgrade
 272
 273                         killall -9 telnetd
 274                         killall -9 dropbear
 275                         killall -9 ash
 276
 277                         kill_remaining TERM
 278                         sleep 3
 279                         kill_remaining KILL
 280
 281                         sleep 1
 282
 283                         if [ -n "$(rootfs_type)" ]; then
 284                                 v "Switching to ramdisk..."
 285                                 run_ramfs ". /lib/functions.sh; include /lib/upgrade; nand_do_upgrade_stage2 $2"
 286                         else
 287                                 nand_do_upgrade_stage2 $2
 288                         fi
 289                         return 0
 290                 }
 291                 echo "Nand upgrade failed"
 292                 exit 1
 293         }
 294 }
 295
 296 nand_upgrade_stage1() {
 297         [ -f /tmp/sysupgrade-nand-path ] && {
 298                 path="$(cat /tmp/sysupgrade-nand-path)"
 299                 [ "$SAVE_CONFIG" != 1 -a -f "$CONF_TAR" ] &&
 300                         rm $CONF_TAR
 301
 302                 ubus call system nandupgrade "{\"path\": \"$path\" }"
 303                 exit 0
 304         }
 305 }
 306 append sysupgrade_pre_upgrade nand_upgrade_stage1
 307
 308 nand_do_platform_check() {
 309         local board_name="$1"
 310         local tar_file="$2"
 311         local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
 312         local file_type="$(identify $2)"
 313
 314         [ "$control_length" = 0 -a "$file_type" != "ubi" -a "$file_type" != "ubifs" ] && {
 315                 echo "Invalid sysupgrade file."
 316                 return 1
 317         }
 318
 319         echo -n $2 > /tmp/sysupgrade-nand-path
 320         cp /sbin/upgraded /tmp/
 321
 322         return 0
 323 }