target/linux/ar71xx/base-files/lib/upgrade/platform.sh

   1 #
   2 # Copyright (C) 2011 OpenWrt.org
   3 #
   4
   5 . /lib/functions/system.sh
   6 . /lib/ar71xx.sh
   7
   8 PART_NAME=firmware
   9 RAMFS_COPY_DATA=/lib/ar71xx.sh
  10 [ -x /usr/sbin/nandwrite ] && RAMFS_COPY_BIN=/usr/sbin/nandwrite
  11
  12 CI_BLKSZ=65536
  13 CI_LDADR=0x80060000
  14
  15 PLATFORM_DO_UPGRADE_COMBINED_SEPARATE_MTD=0
  16
  17 platform_find_partitions() {
  18         local first dev size erasesize name
  19         while read dev size erasesize name; do
  20                 name=${name#'"'}; name=${name%'"'}
  21                 case "$name" in
  22                         vmlinux.bin.l7|vmlinux|kernel|linux|linux.bin|rootfs|filesystem)
  23                                 if [ -z "$first" ]; then
  24                                         first="$name"
  25                                 else
  26                                         echo "$erasesize:$first:$name"
  27                                         break
  28                                 fi
  29                         ;;
  30                 esac
  31         done < /proc/mtd
  32 }
  33
  34 platform_find_kernelpart() {
  35         local part
  36         for part in "${1%:*}" "${1#*:}"; do
  37                 case "$part" in
  38                         vmlinux.bin.l7|vmlinux|kernel|linux|linux.bin)
  39                                 echo "$part"
  40                                 break
  41                         ;;
  42                 esac
  43         done
  44 }
  45
  46 platform_find_rootfspart() {
  47         local part
  48         for part in "${1%:*}" "${1#*:}"; do
  49                 [ "$part" != "$2" ] && echo "$part" && break
  50         done
  51 }
  52
  53 platform_do_upgrade_combined() {
  54         local partitions=$(platform_find_partitions)
  55         local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
  56         local erase_size=$((0x${partitions%%:*})); partitions="${partitions#*:}"
  57         local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
  58         local kern_blocks=$(($kern_length / $CI_BLKSZ))
  59         local root_blocks=$((0x$(dd if="$1" bs=2 skip=5 count=4 2>/dev/null) / $CI_BLKSZ))
  60
  61         if [ -n "$partitions" ] && [ -n "$kernelpart" ] && \
  62            [ ${kern_blocks:-0} -gt 0 ] && \
  63            [ ${root_blocks:-0} -gt 0 ] && \
  64            [ ${erase_size:-0} -gt 0 ];
  65         then
  66                 local rootfspart=$(platform_find_rootfspart "$partitions" "$kernelpart")
  67                 local append=""
  68                 [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
  69
  70                 if [ "$PLATFORM_DO_UPGRADE_COMBINED_SEPARATE_MTD" -ne 1 ]; then
  71                     ( dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null; \
  72                       dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null ) | \
  73                             mtd -r $append -F$kernelpart:$kern_length:$CI_LDADR,rootfs write - $partitions
  74                 elif [ -n "$rootfspart" ]; then
  75                     dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null | \
  76                             mtd write - $kernelpart
  77                     dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null | \
  78                             mtd -r $append write - $rootfspart
  79                 fi
  80         fi
  81         PLATFORM_DO_UPGRADE_COMBINED_SEPARATE_MTD=0
  82 }
  83
  84 tplink_get_image_hwid() {
  85         get_image "$@" | dd bs=4 count=1 skip=16 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
  86 }
  87
  88 tplink_get_image_mid() {
  89         get_image "$@" | dd bs=4 count=1 skip=17 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
  90 }
  91
  92 tplink_get_image_boot_size() {
  93         get_image "$@" | dd bs=4 count=1 skip=37 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
  94 }
  95
  96 tplink_pharos_check_image() {
  97         local magic_long="$(get_magic_long "$1")"
  98         [ "$magic_long" != "7f454c46" ] && {
  99                 echo "Invalid image magic '$magic_long'"
 100                 return 1
 101         }
 102
 103         local model_string="$(tplink_pharos_get_model_string)"
 104         local line
 105
 106         # Here $1 is given to dd directly instead of get_image as otherwise the skip
 107         # will take almost a second (as dd can't seek then)
 108         #
 109         # This will fail if the image isn't local, but that's fine: as the
 110         # read loop won't be executed at all, it will return true, so the image
 111         # is accepted (loading the first 1.5M of a remote image for this check seems
 112         # a bit extreme)
 113         dd if="$1" bs=1 skip=1511432 count=1024 2>/dev/null | while read line; do
 114                 [ "$line" == "$model_string" ] && break
 115         done || {
 116                 echo "Unsupported image (model not in support-list)"
 117                 return 1
 118         }
 119
 120         return 0
 121 }
 122
 123 seama_get_type_magic() {
 124         get_image "$@" | dd bs=1 count=4 skip=53 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 125 }
 126
 127 wrgg_get_image_magic() {
 128         get_image "$@" | dd bs=4 count=1 skip=8 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 129 }
 130
 131 cybertan_get_image_magic() {
 132         get_image "$@" | dd bs=8 count=1 skip=0  2>/dev/null | hexdump -v -n 8 -e '1/1 "%02x"'
 133 }
 134
 135 cybertan_check_image() {
 136         local magic="$(cybertan_get_image_magic "$1")"
 137         local fw_magic="$(cybertan_get_hw_magic)"
 138
 139         [ "$fw_magic" != "$magic" ] && {
 140                 echo "Invalid image, ID mismatch, got:$magic, but need:$fw_magic"
 141                 return 1
 142         }
 143
 144         return 0
 145 }
 146
 147 platform_do_upgrade_compex() {
 148         local fw_file=$1
 149         local fw_part=$PART_NAME
 150         local fw_mtd=$(find_mtd_part $fw_part)
 151         local fw_length=0x$(dd if="$fw_file" bs=2 skip=1 count=4 2>/dev/null)
 152         local fw_blocks=$(($fw_length / 65536))
 153
 154         if [ -n "$fw_mtd" ] &&  [ ${fw_blocks:-0} -gt 0 ]; then
 155                 local append=""
 156                 [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
 157
 158                 sync
 159                 dd if="$fw_file" bs=64k skip=1 count=$fw_blocks 2>/dev/null | \
 160                         mtd $append write - "$fw_part"
 161         fi
 162 }
 163
 164 alfa_check_image() {
 165         local magic_long="$(get_magic_long "$1")"
 166         local fw_part_size=$(mtd_get_part_size firmware)
 167
 168         case "$magic_long" in
 169         "27051956")
 170                 [ "$fw_part_size" != "16318464" ] && {
 171                         echo "Invalid image magic \"$magic_long\" for $fw_part_size bytes"
 172                         return 1
 173                 }
 174                 ;;
 175         "68737173")
 176                 [ "$fw_part_size" != "7929856" ] && {
 177                         echo "Invalid image magic \"$magic_long\" for $fw_part_size bytes"
 178                         return 1
 179                 }
 180                 ;;
 181         esac
 182
 183         return 0
 184 }
 185
 186 platform_nand_board_name() {
 187         local board=$(ar71xx_board_name)
 188
 189         case "$board" in
 190         rb*) echo "routerboard";;
 191         *) echo "$board";;
 192         esac
 193 }
 194
 195 platform_check_image() {
 196         local board=$(ar71xx_board_name)
 197         local magic="$(get_magic_word "$1")"
 198         local magic_long="$(get_magic_long "$1")"
 199
 200         [ "$#" -gt 1 ] && return 1
 201
 202         case "$board" in
 203         airgatewaypro|\
 204         airgateway|\
 205         airrouter|\
 206         ap132|\
 207         ap90q|\
 208         archer-c59-v1|\
 209         archer-c60-v1|\
 210         bullet-m|\
 211         c-55|\
 212         carambola2|\
 213         cf-e316n-v2|\
 214         cf-e320n-v2|\
 215         cf-e380ac-v1|\
 216         cf-e380ac-v2|\
 217         cf-e520n|\
 218         cf-e530n|\
 219         cpe830|\
 220         cpe870|\
 221         dgl-5500-a1|\
 222         dhp-1565-a1|\
 223         dir-505-a1|\
 224         dir-600-a1|\
 225         dir-615-c1|\
 226         dir-615-e1|\
 227         dir-615-e4|\
 228         dir-615-i1|\
 229         dir-825-c1|\
 230         dir-835-a1|\
 231         dlan-hotspot|\
 232         dlan-pro-1200-ac|\
 233         dlan-pro-500-wp|\
 234         dr531|\
 235         dragino2|\
 236         epg5000|\
 237         esr1750|\
 238         esr900|\
 239         ew-dorin-router|\
 240         ew-dorin|\
 241         gl-ar150|\
 242         gl-ar300m|\
 243         gl-ar300|\
 244         gl-domino|\
 245         gl-mifi|\
 246         hiwifi-hc6361|\
 247         hornet-ub-x2|\
 248         jwap230|\
 249         loco-m-xw|\
 250         mzk-w04nu|\
 251         mzk-w300nh|\
 252         nanostation-m-xw|\
 253         nanostation-m|\
 254         nbg460n_550n_550nh|\
 255         pqi-air-pen|\
 256         rocket-m-ti|\
 257         rocket-m-xw|\
 258         rocket-m|\
 259         rw2458n|\
 260         sc1750|\
 261         sc300m|\
 262         sc450|\
 263         sr3200|\
 264         tew-632brp|\
 265         tew-712br|\
 266         tew-732br|\
 267         tew-823dru|\
 268         unifi-outdoor|\
 269         unifiac-lite|\
 270         unifiac-pro|\
 271         unifi|\
 272         weio|\
 273         whr-g301n|\
 274         whr-hp-g300n|\
 275         whr-hp-gn|\
 276         wlae-ag300n|\
 277         wndap360|\
 278         wpj342|\
 279         wpj344|\
 280         wpj531|\
 281         wrt400n|\
 282         wrtnode2q|\
 283         wzr-450hp2|\
 284         wzr-hp-ag300h|\
 285         wzr-hp-g300nh2|\
 286         wzr-hp-g300nh|\
 287         wzr-hp-g450h|\
 288         xd3200)
 289                 [ "$magic" != "2705" ] && {
 290                         echo "Invalid image type."
 291                         return 1
 292                 }
 293
 294                 return 0
 295                 ;;
 296         alfa-ap96|\
 297         alfa-nx|\
 298         ap121-mini|\
 299         ap121|\
 300         ap135-020|\
 301         ap136-010|\
 302         ap136-020|\
 303         ap147-010|\
 304         ap152|\
 305         ap96|\
 306         arduino-yun|\
 307         bhr-4grv2|\
 308         bxu2000n-2-a1|\
 309         db120|\
 310         dr344|\
 311         dw33d|\
 312         f9k1115v2|\
 313         hornet-ub|\
 314         mr12|\
 315         mr16|\
 316         wpj558|\
 317         zbt-we1526|\
 318         zcn-1523h-2|\
 319         zcn-1523h-5)
 320                 [ "$magic_long" != "68737173" -a "$magic_long" != "19852003" ] && {
 321                         echo "Invalid image type."
 322                         return 1
 323                 }
 324
 325                 return 0
 326                 ;;
 327         all0258n|\
 328         all0315n|\
 329         cap324|\
 330         cap4200ag|\
 331         cr3000|\
 332         cr5000)
 333                 platform_check_image_allnet "$1" && return 0
 334                 return 1
 335                 ;;
 336         all0305|\
 337         eap300v2|\
 338         eap7660d|\
 339         ja76pf2|\
 340         ja76pf|\
 341         jwap003|\
 342         ls-sr71|\
 343         pb42|\
 344         pb44|\
 345         rb-941-2nd|\
 346         routerstation-pro|\
 347         routerstation|\
 348         wp543|\
 349         wpe72)
 350                 [ "$magic" != "4349" ] && {
 351                         echo "Invalid image. Use *-sysupgrade.bin files on this board"
 352                         return 1
 353                 }
 354
 355                 local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
 356                 local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
 357
 358                 if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
 359                         return 0
 360                 else
 361                         echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
 362                         return 1
 363                 fi
 364
 365                 return 0
 366                 ;;
 367         antminer-s1|\
 368         antminer-s3|\
 369         antrouter-r1|\
 370         archer-c5|\
 371         archer-c7|\
 372         el-m150|\
 373         el-mini|\
 374         gl-inet|\
 375         mc-mac1200r|\
 376         minibox-v1|\
 377         omy-g1|\
 378         omy-x1|\
 379         onion-omega|\
 380         oolite|\
 381         re450|\
 382         smart-300|\
 383         som9331|\
 384         tellstick-znet-lite|\
 385         tl-mr10u|\
 386         tl-mr11u|\
 387         tl-mr12u|\
 388         tl-mr13u|\
 389         tl-mr3020|\
 390         tl-mr3040-v2|\
 391         tl-mr3040|\
 392         tl-mr3220-v2|\
 393         tl-mr3220|\
 394         tl-mr3420-v2|\
 395         tl-mr3420|\
 396         tl-wa701nd-v2|\
 397         tl-wa7210n-v2|\
 398         tl-wa750re|\
 399         tl-wa7510n|\
 400         tl-wa801nd-v2|\
 401         tl-wa801nd-v3|\
 402         tl-wa830re-v2|\
 403         tl-wa850re|\
 404         tl-wa850re-v2|\
 405         tl-wa860re|\
 406         tl-wa901nd-v2|\
 407         tl-wa901nd-v3|\
 408         tl-wa901nd-v4|\
 409         tl-wa901nd|\
 410         tl-wdr3320-v2|\
 411         tl-wdr3500|\
 412         tl-wdr4300|\
 413         tl-wdr4900-v2|\
 414         tl-wdr6500-v2|\
 415         tl-wpa8630|\
 416         tl-wr1041n-v2|\
 417         tl-wr1043nd-v2|\
 418         tl-wr1043nd-v4|\
 419         tl-wr1043nd|\
 420         tl-wr2543n|\
 421         tl-wr703n|\
 422         tl-wr710n|\
 423         tl-wr720n-v3|\
 424         tl-wr741nd-v4|\
 425         tl-wr741nd|\
 426         tl-wr802n-v1|\
 427         tl-wr810n|\
 428         tl-wr841n-v11|\
 429         tl-wr841n-v1|\
 430         tl-wr841n-v7|\
 431         tl-wr841n-v8|\
 432         tl-wr841n-v9|\
 433         tl-wr842n-v2|\
 434         tl-wr842n-v3|\
 435         tl-wr941nd-v5|\
 436         tl-wr941nd-v6|\
 437         tl-wr940n-v4|\
 438         tl-wr941nd)
 439                 local magic_ver="0100"
 440
 441                 case "$board" in
 442                 tl-wdr6500-v2)
 443                         magic_ver="0200"
 444                         ;;
 445                 esac
 446
 447                 [ "$magic" != "$magic_ver" ] && {
 448                         echo "Invalid image type."
 449                         return 1
 450                 }
 451
 452                 local hwid
 453                 local mid
 454                 local imagehwid
 455                 local imagemid
 456
 457                 hwid=$(tplink_get_hwid)
 458                 mid=$(tplink_get_mid)
 459                 imagehwid=$(tplink_get_image_hwid "$1")
 460                 imagemid=$(tplink_get_image_mid "$1")
 461
 462                 [ "$hwid" != "$imagehwid" -o "$mid" != "$imagemid" ] && {
 463                         echo "Invalid image, hardware ID mismatch, hw:$hwid $mid image:$imagehwid $imagemid."
 464                         return 1
 465                 }
 466
 467                 local boot_size
 468
 469                 boot_size=$(tplink_get_image_boot_size "$1")
 470                 [ "$boot_size" != "00000000" ] && {
 471                         echo "Invalid image, it contains a bootloader."
 472                         return 1
 473                 }
 474
 475                 return 0
 476                 ;;
 477         bsb|\
 478         dir-825-b1|\
 479         tew-673gru)
 480                 dir825b_check_image "$1" && return 0
 481                 ;;
 482         rb*)
 483                 nand_do_platform_check routerboard $1
 484                 return $?
 485                 ;;
 486         c-60|\
 487         nbg6716|\
 488         r6100|\
 489         wndr3700v4|\
 490         wndr4300)
 491                 nand_do_platform_check $board $1
 492                 return $?
 493                 ;;
 494         cpe210|\
 495         cpe510|\
 496         eap120|\
 497         wbs210|\
 498         wbs510)
 499                 tplink_pharos_check_image "$1" && return 0
 500                 return 1
 501                 ;;
 502         a40|\
 503         a60|\
 504         mr1750v2|\
 505         mr1750|\
 506         mr600v2|\
 507         mr600|\
 508         mr900v2|\
 509         mr900|\
 510         om2p-hsv2|\
 511         om2p-hsv3|\
 512         om2p-hsv4|\
 513         om2p-hs|\
 514         om2p-lc|\
 515         om2pv2|\
 516         om2pv4|\
 517         om2p|\
 518         om5p-acv2|\
 519         om5p-ac|\
 520         om5p-an|\
 521         om5p)
 522                 platform_check_image_openmesh "$magic_long" "$1" && return 0
 523                 return 1
 524                 ;;
 525         mr18|\
 526         z1)
 527                 merakinand_do_platform_check $board $1
 528                 return $?
 529                 ;;
 530         dir-869-a1|\
 531         mynet-n600|\
 532         mynet-n750|\
 533         qihoo-c301)
 534                 [ "$magic_long" != "5ea3a417" ] && {
 535                         echo "Invalid image, bad magic: $magic_long"
 536                         return 1
 537                 }
 538
 539                 local typemagic=$(seama_get_type_magic "$1")
 540                 [ "$typemagic" != "6669726d" ] && {
 541                         echo "Invalid image, bad type: $typemagic"
 542                         return 1
 543                 }
 544
 545                 return 0
 546                 ;;
 547         e2100l|\
 548         mynet-rext|\
 549         wrt160nl)
 550                 cybertan_check_image "$1" && return 0
 551                 return 1
 552                 ;;
 553         nbg6616|\
 554         uap-pro|\
 555         unifi-outdoor-plus)
 556                 [ "$magic_long" != "19852003" ] && {
 557                         echo "Invalid image type."
 558                         return 1
 559                 }
 560
 561                 return 0
 562                 ;;
 563         tube2h)
 564                 alfa_check_image "$1" && return 0
 565                 return 1
 566                 ;;
 567         wndr3700|\
 568         wnr1000-v2|\
 569         wnr2000-v3|\
 570         wnr612-v2|\
 571         wpn824n)
 572                 local hw_magic
 573
 574                 hw_magic="$(ar71xx_get_mtd_part_magic firmware)"
 575                 [ "$magic_long" != "$hw_magic" ] && {
 576                         echo "Invalid image, hardware ID mismatch, hw:$hw_magic image:$magic_long."
 577                         return 1
 578                 }
 579
 580                 return 0
 581                 ;;
 582         wnr2000-v4)
 583                 [ "$magic_long" != "32303034" ] && {
 584                         echo "Invalid image type."
 585                         return 1
 586                 }
 587
 588                 return 0
 589                 ;;
 590         wnr2200)
 591                 [ "$magic_long" != "32323030" ] && {
 592                         echo "Invalid image type."
 593                         return 1
 594                 }
 595
 596                 return 0
 597                 ;;
 598         dap-2695-a1)
 599                 local magic=$(wrgg_get_image_magic "$1")
 600                 [ "$magic" != "21030820" ] && {
 601                         echo "Invalid image, bad type: $magic"
 602                         return 1
 603                 }
 604
 605                 return 0;
 606                 ;;
 607         esac
 608
 609         echo "Sysupgrade is not yet supported on $board."
 610         return 1
 611 }
 612
 613 platform_pre_upgrade() {
 614         local board=$(ar71xx_board_name)
 615
 616         case "$board" in
 617         rb-941-2nd)
 618                 ;;
 619         rb*|\
 620         c-60|\
 621         nbg6716|\
 622         r6100|\
 623         wndr3700v4|\
 624         wndr4300)
 625                 nand_do_upgrade "$1"
 626                 ;;
 627         mr18|\
 628         z1)
 629                 merakinand_do_upgrade "$1"
 630                 ;;
 631         esac
 632 }
 633
 634 platform_nand_pre_upgrade() {
 635         local board=$(ar71xx_board_name)
 636
 637         case "$board" in
 638         rb*)
 639                 CI_KERNPART=none
 640                 local fw_mtd=$(find_mtd_part kernel)
 641                 fw_mtd="${fw_mtd/block/}"
 642                 [ -n "$fw_mtd" ] || return
 643                 mtd erase kernel
 644                 tar xf "$1" sysupgrade-routerboard/kernel -O | nandwrite -o "$fw_mtd" -
 645                 ;;
 646         esac
 647 }
 648
 649 platform_do_upgrade() {
 650         local board=$(ar71xx_board_name)
 651
 652         case "$board" in
 653         rb-941-2nd)
 654                 PLATFORM_DO_UPGRADE_COMBINED_SEPARATE_MTD=1
 655                 platform_do_upgrade_combined "$ARGV"
 656                 ;;
 657         all0258n)
 658                 platform_do_upgrade_allnet "0x9f050000" "$ARGV"
 659                 ;;
 660         all0305|\
 661         eap7660d|\
 662         ja76pf2|\
 663         ja76pf|\
 664         jwap003|\
 665         ls-sr71|\
 666         pb42|\
 667         pb44|\
 668         routerstation-pro|\
 669         routerstation)
 670                 platform_do_upgrade_combined "$ARGV"
 671                 ;;
 672         all0315n)
 673                 platform_do_upgrade_allnet "0x9f080000" "$ARGV"
 674                 ;;
 675         cap4200ag|\
 676         eap300v2)
 677                 platform_do_upgrade_allnet "0xbf0a0000" "$ARGV"
 678                 ;;
 679         dir-825-b1|\
 680         tew-673gru)
 681                 platform_do_upgrade_dir825b "$ARGV"
 682                 ;;
 683         a40|\
 684         a60|\
 685         mr1750v2|\
 686         mr1750|\
 687         mr600v2|\
 688         mr600|\
 689         mr900v2|\
 690         mr900|\
 691         om2p-hsv2|\
 692         om2p-hsv3|\
 693         om2p-hsv4|\
 694         om2p-hs|\
 695         om2p-lc|\
 696         om2pv2|\
 697         om2pv4|\
 698         om2p|\
 699         om5p-acv2|\
 700         om5p-ac|\
 701         om5p-an|\
 702         om5p)
 703                 platform_do_upgrade_openmesh "$ARGV"
 704                 ;;
 705         uap-pro|\
 706         unifi-outdoor-plus)
 707                 MTD_CONFIG_ARGS="-s 0x180000"
 708                 default_do_upgrade "$ARGV"
 709                 ;;
 710         wp543|\
 711         wpe72)
 712                 platform_do_upgrade_compex "$ARGV"
 713                 ;;
 714         *)
 715                 default_do_upgrade "$ARGV"
 716                 ;;
 717         esac
 718 }
 719
 720 disable_watchdog() {
 721         killall watchdog
 722         ( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
 723                 echo 'Could not disable watchdog'
 724                 return 1
 725         }
 726 }
 727
 728 append sysupgrade_pre_upgrade disable_watchdog