package/system/procd/files/nand.sh

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