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_support_list() {
  97         local image="$1"
  98         local offset="$2"
  99         local model="$3"
 100
 101         # Here $image is given to dd directly instead of using get_image;
 102         # otherwise the skip will take almost a second (as dd can't seek)
 103         dd if="$image" bs=1 skip=$offset count=1024 2>/dev/null | (
 104                 while IFS= read -r line; do
 105                         [ "$line" = "$model" ] && exit 0
 106                 done
 107
 108                 exit 1
 109         )
 110 }
 111
 112 tplink_pharos_check_image() {
 113         local magic_long="$(get_magic_long "$1")"
 114         [ "$magic_long" != "7f454c46" ] && {
 115                 echo "Invalid image magic '$magic_long'"
 116                 return 1
 117         }
 118
 119         local model_string="$(tplink_pharos_get_model_string)"
 120
 121         # New images have the support list at 7802888, old ones at 1511432
 122         tplink_pharos_check_support_list "$1" 7802888 "$model_string" || \
 123         tplink_pharos_check_support_list "$1" 1511432 "$model_string" || {
 124                 echo "Unsupported image (model not in support-list)"
 125                 return 1
 126         }
 127
 128         return 0
 129 }
 130
 131 seama_get_type_magic() {
 132         get_image "$@" | dd bs=1 count=4 skip=53 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 133 }
 134
 135 wrgg_get_image_magic() {
 136         get_image "$@" | dd bs=4 count=1 skip=8 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 137 }
 138
 139 cybertan_get_image_magic() {
 140         get_image "$@" | dd bs=8 count=1 skip=0  2>/dev/null | hexdump -v -n 8 -e '1/1 "%02x"'
 141 }
 142
 143 cybertan_check_image() {
 144         local magic="$(cybertan_get_image_magic "$1")"
 145         local fw_magic="$(cybertan_get_hw_magic)"
 146
 147         [ "$fw_magic" != "$magic" ] && {
 148                 echo "Invalid image, ID mismatch, got:$magic, but need:$fw_magic"
 149                 return 1
 150         }
 151
 152         return 0
 153 }
 154
 155 platform_do_upgrade_compex() {
 156         local fw_file=$1
 157         local fw_part=$PART_NAME
 158         local fw_mtd=$(find_mtd_part $fw_part)
 159         local fw_length=0x$(dd if="$fw_file" bs=2 skip=1 count=4 2>/dev/null)
 160         local fw_blocks=$(($fw_length / 65536))
 161
 162         if [ -n "$fw_mtd" ] &&  [ ${fw_blocks:-0} -gt 0 ]; then
 163                 local append=""
 164                 [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
 165
 166                 sync
 167                 dd if="$fw_file" bs=64k skip=1 count=$fw_blocks 2>/dev/null | \
 168                         mtd $append write - "$fw_part"
 169         fi
 170 }
 171
 172 alfa_check_image() {
 173         local magic_long="$(get_magic_long "$1")"
 174         local fw_part_size=$(mtd_get_part_size firmware)
 175
 176         case "$magic_long" in
 177         "27051956")
 178                 [ "$fw_part_size" != "16318464" ] && {
 179                         echo "Invalid image magic \"$magic_long\" for $fw_part_size bytes"
 180                         return 1
 181                 }
 182                 ;;
 183         "68737173")
 184                 [ "$fw_part_size" != "7929856" ] && {
 185                         echo "Invalid image magic \"$magic_long\" for $fw_part_size bytes"
 186                         return 1
 187                 }
 188                 ;;
 189         esac
 190
 191         return 0
 192 }
 193
 194 platform_nand_board_name() {
 195         local board=$(ar71xx_board_name)
 196
 197         case "$board" in
 198         rb*) echo "routerboard";;
 199         *) echo "$board";;
 200         esac
 201 }
 202
 203 platform_check_image() {
 204         local board=$(ar71xx_board_name)
 205         local magic="$(get_magic_word "$1")"
 206         local magic_long="$(get_magic_long "$1")"
 207
 208         [ "$#" -gt 1 ] && return 1
 209
 210         case "$board" in
 211         airgatewaypro|\
 212         airgateway|\
 213         airrouter|\
 214         ap121f|\
 215         ap132|\
 216         ap90q|\
 217         bullet-m|\
 218         c-55|\
 219         carambola2|\
 220         cf-e316n-v2|\
 221         cf-e320n-v2|\
 222         cf-e380ac-v1|\
 223         cf-e380ac-v2|\
 224         cf-e520n|\
 225         cf-e530n|\
 226         cpe830|\
 227         cpe870|\
 228         dgl-5500-a1|\
 229         dhp-1565-a1|\
 230         dir-505-a1|\
 231         dir-600-a1|\
 232         dir-615-c1|\
 233         dir-615-e1|\
 234         dir-615-e4|\
 235         dir-615-i1|\
 236         dir-825-c1|\
 237         dir-835-a1|\
 238         dlan-hotspot|\
 239         dlan-pro-1200-ac|\
 240         dlan-pro-500-wp|\
 241         dr531|\
 242         dragino2|\
 243         epg5000|\
 244         esr1750|\
 245         esr900|\
 246         ew-dorin-router|\
 247         ew-dorin|\
 248         gl-ar150|\
 249         gl-ar300m|\
 250         gl-ar300|\
 251         gl-domino|\
 252         gl-mifi|\
 253         hiwifi-hc6361|\
 254         hornet-ub-x2|\
 255         jwap230|\
 256         loco-m-xw|\
 257         mzk-w04nu|\
 258         mzk-w300nh|\
 259         nanostation-m-xw|\
 260         nanostation-m|\
 261         nbg460n_550n_550nh|\
 262         rocket-m-ti|\
 263         rocket-m-xw|\
 264         rocket-m|\
 265         rw2458n|\
 266         sr3200|\
 267         tew-632brp|\
 268         tew-712br|\
 269         tew-732br|\
 270         tew-823dru|\
 271         unifi-outdoor|\
 272         unifiac-lite|\
 273         unifiac-pro|\
 274         unifi|\
 275         weio|\
 276         whr-g301n|\
 277         whr-hp-g300n|\
 278         whr-hp-gn|\
 279         wlae-ag300n|\
 280         wndap360|\
 281         wpj342|\
 282         wpj344|\
 283         wpj531|\
 284         wrt400n|\
 285         wrtnode2q|\
 286         wzr-450hp2|\
 287         wzr-hp-ag300h|\
 288         wzr-hp-g300nh2|\
 289         wzr-hp-g300nh|\
 290         wzr-hp-g450h|\
 291         xd3200)
 292                 [ "$magic" != "2705" ] && {
 293                         echo "Invalid image type."
 294                         return 1
 295                 }
 296
 297                 return 0
 298                 ;;
 299         alfa-ap96|\
 300         alfa-nx|\
 301         ap121-mini|\
 302         ap121|\
 303         ap135-020|\
 304         ap136-010|\
 305         ap136-020|\
 306         ap147-010|\
 307         ap152|\
 308         ap96|\
 309         arduino-yun|\
 310         bhr-4grv2|\
 311         bxu2000n-2-a1|\
 312         db120|\
 313         dr344|\
 314         dw33d|\
 315         f9k1115v2|\
 316         hornet-ub|\
 317         mr12|\
 318         mr16|\
 319         wpj558|\
 320         zbt-we1526|\
 321         zcn-1523h-2|\
 322         zcn-1523h-5)
 323                 [ "$magic_long" != "68737173" -a "$magic_long" != "19852003" ] && {
 324                         echo "Invalid image type."
 325                         return 1
 326                 }
 327
 328                 return 0
 329                 ;;
 330         all0258n|\
 331         all0315n|\
 332         cap324|\
 333         cap4200ag|\
 334         cr3000|\
 335         cr5000)
 336                 platform_check_image_allnet "$1" && return 0
 337                 return 1
 338                 ;;
 339         all0305|\
 340         eap300v2|\
 341         eap7660d|\
 342         ja76pf2|\
 343         ja76pf|\
 344         jwap003|\
 345         ls-sr71|\
 346         pb42|\
 347         pb44|\
 348         rb-941-2nd|\
 349         routerstation-pro|\
 350         routerstation|\
 351         wp543|\
 352         wpe72)
 353                 [ "$magic" != "4349" ] && {
 354                         echo "Invalid image. Use *-sysupgrade.bin files on this board"
 355                         return 1
 356                 }
 357
 358                 local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
 359                 local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
 360
 361                 if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
 362                         return 0
 363                 else
 364                         echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
 365                         return 1
 366                 fi
 367
 368                 return 0
 369                 ;;
 370         antminer-s1|\
 371         antminer-s3|\
 372         antrouter-r1|\
 373         archer-c5|\
 374         archer-c7|\
 375         el-m150|\
 376         el-mini|\
 377         gl-inet|\
 378         mc-mac1200r|\
 379         minibox-v1|\
 380         omy-g1|\
 381         omy-x1|\
 382         onion-omega|\
 383         oolite|\
 384         re450|\
 385         smart-300|\
 386         som9331|\
 387         tellstick-znet-lite|\
 388         tl-mr10u|\
 389         tl-mr11u|\
 390         tl-mr12u|\
 391         tl-mr13u|\
 392         tl-mr3020|\
 393         tl-mr3040-v2|\
 394         tl-mr3040|\
 395         tl-mr3220-v2|\
 396         tl-mr3220|\
 397         tl-mr3420-v2|\
 398         tl-mr3420|\
 399         tl-wa701nd-v2|\
 400         tl-wa7210n-v2|\
 401         tl-wa750re|\
 402         tl-wa7510n|\
 403         tl-wa801nd-v2|\
 404         tl-wa801nd-v3|\
 405         tl-wa830re-v2|\
 406         tl-wa850re|\
 407         tl-wa860re|\
 408         tl-wa901nd-v2|\
 409         tl-wa901nd-v3|\
 410         tl-wa901nd-v4|\
 411         tl-wa901nd|\
 412         tl-wdr3320-v2|\
 413         tl-wdr3500|\
 414         tl-wdr4300|\
 415         tl-wdr4900-v2|\
 416         tl-wdr6500-v2|\
 417         tl-wpa8630|\
 418         tl-wr1041n-v2|\
 419         tl-wr1043nd-v2|\
 420         tl-wr1043nd-v4|\
 421         tl-wr1043nd|\
 422         tl-wr2543n|\
 423         tl-wr703n|\
 424         tl-wr710n|\
 425         tl-wr720n-v3|\
 426         tl-wr741nd-v4|\
 427         tl-wr741nd|\
 428         tl-wr802n-v1|\
 429         tl-wr810n|\
 430         tl-wr841n-v11|\
 431         tl-wr841n-v1|\
 432         tl-wr841n-v7|\
 433         tl-wr841n-v8|\
 434         tl-wr841n-v9|\
 435         tl-wr842n-v2|\
 436         tl-wr842n-v3|\
 437         tl-wr941nd-v5|\
 438         tl-wr941nd-v6|\
 439         tl-wr940n-v4|\
 440         tl-wr941nd)
 441                 local magic_ver="0100"
 442
 443                 case "$board" in
 444                 tl-wdr6500-v2)
 445                         magic_ver="0200"
 446                         ;;
 447                 esac
 448
 449                 [ "$magic" != "$magic_ver" ] && {
 450                         echo "Invalid image type."
 451                         return 1
 452                 }
 453
 454                 local hwid
 455                 local mid
 456                 local imagehwid
 457                 local imagemid
 458
 459                 hwid=$(tplink_get_hwid)
 460                 mid=$(tplink_get_mid)
 461                 imagehwid=$(tplink_get_image_hwid "$1")
 462                 imagemid=$(tplink_get_image_mid "$1")
 463
 464                 [ "$hwid" != "$imagehwid" -o "$mid" != "$imagemid" ] && {
 465                         echo "Invalid image, hardware ID mismatch, hw:$hwid $mid image:$imagehwid $imagemid."
 466                         return 1
 467                 }
 468
 469                 local boot_size
 470
 471                 boot_size=$(tplink_get_image_boot_size "$1")
 472                 [ "$boot_size" != "00000000" ] && {
 473                         echo "Invalid image, it contains a bootloader."
 474                         return 1
 475                 }
 476
 477                 return 0
 478                 ;;
 479         bsb|\
 480         dir-825-b1|\
 481         tew-673gru)
 482                 dir825b_check_image "$1" && return 0
 483                 ;;
 484         rb*)
 485                 nand_do_platform_check routerboard $1
 486                 return $?
 487                 ;;
 488         c-60|\
 489         nbg6716|\
 490         r6100|\
 491         wndr3700v4|\
 492         wndr4300)
 493                 nand_do_platform_check $board $1
 494                 return $?
 495                 ;;
 496         cpe210|\
 497         cpe510|\
 498         eap120|\
 499         wbs210|\
 500         wbs510)
 501                 tplink_pharos_check_image "$1" && return 0
 502                 return 1
 503                 ;;
 504         a40|\
 505         a60|\
 506         mr1750v2|\
 507         mr1750|\
 508         mr600v2|\
 509         mr600|\
 510         mr900v2|\
 511         mr900|\
 512         om2p-hsv2|\
 513         om2p-hsv3|\
 514         om2p-hsv4|\
 515         om2p-hs|\
 516         om2p-lc|\
 517         om2pv2|\
 518         om2pv4|\
 519         om2p|\
 520         om5p-acv2|\
 521         om5p-ac|\
 522         om5p-an|\
 523         om5p)
 524                 platform_check_image_openmesh "$magic_long" "$1" && return 0
 525                 return 1
 526                 ;;
 527         mr18|\
 528         z1)
 529                 merakinand_do_platform_check $board $1
 530                 return $?
 531                 ;;
 532         dir-869-a1|\
 533         mynet-n600|\
 534         mynet-n750|\
 535         qihoo-c301)
 536                 [ "$magic_long" != "5ea3a417" ] && {
 537                         echo "Invalid image, bad magic: $magic_long"
 538                         return 1
 539                 }
 540
 541                 local typemagic=$(seama_get_type_magic "$1")
 542                 [ "$typemagic" != "6669726d" ] && {
 543                         echo "Invalid image, bad type: $typemagic"
 544                         return 1
 545                 }
 546
 547                 return 0
 548                 ;;
 549         e2100l|\
 550         mynet-rext|\
 551         wrt160nl)
 552                 cybertan_check_image "$1" && return 0
 553                 return 1
 554                 ;;
 555         nbg6616|\
 556         uap-pro|\
 557         unifi-outdoor-plus)
 558                 [ "$magic_long" != "19852003" ] && {
 559                         echo "Invalid image type."
 560                         return 1
 561                 }
 562
 563                 return 0
 564                 ;;
 565         tube2h)
 566                 alfa_check_image "$1" && return 0
 567                 return 1
 568                 ;;
 569         wndr3700|\
 570         wnr1000-v2|\
 571         wnr2000-v3|\
 572         wnr612-v2|\
 573         wpn824n)
 574                 local hw_magic
 575
 576                 hw_magic="$(ar71xx_get_mtd_part_magic firmware)"
 577                 [ "$magic_long" != "$hw_magic" ] && {
 578                         echo "Invalid image, hardware ID mismatch, hw:$hw_magic image:$magic_long."
 579                         return 1
 580                 }
 581
 582                 return 0
 583                 ;;
 584         wnr2000-v4)
 585                 [ "$magic_long" != "32303034" ] && {
 586                         echo "Invalid image type."
 587                         return 1
 588                 }
 589
 590                 return 0
 591                 ;;
 592         wnr2200)
 593                 [ "$magic_long" != "32323030" ] && {
 594                         echo "Invalid image type."
 595                         return 1
 596                 }
 597
 598                 return 0
 599                 ;;
 600         dap-2695-a1)
 601                 local magic=$(wrgg_get_image_magic "$1")
 602                 [ "$magic" != "21030820" ] && {
 603                         echo "Invalid image, bad type: $magic"
 604                         return 1
 605                 }
 606
 607                 return 0;
 608                 ;;
 609         esac
 610
 611         echo "Sysupgrade is not yet supported on $board."
 612         return 1
 613 }
 614
 615 platform_pre_upgrade() {
 616         local board=$(ar71xx_board_name)
 617
 618         case "$board" in
 619         rb-941-2nd)
 620                 ;;
 621         rb*|\
 622         c-60|\
 623         nbg6716|\
 624         r6100|\
 625         wndr3700v4|\
 626         wndr4300)
 627                 nand_do_upgrade "$1"
 628                 ;;
 629         mr18|\
 630         z1)
 631                 merakinand_do_upgrade "$1"
 632                 ;;
 633         esac
 634 }
 635
 636 platform_nand_pre_upgrade() {
 637         local board=$(ar71xx_board_name)
 638
 639         case "$board" in
 640         rb*)
 641                 CI_KERNPART=none
 642                 local fw_mtd=$(find_mtd_part kernel)
 643                 fw_mtd="${fw_mtd/block/}"
 644                 [ -n "$fw_mtd" ] || return
 645                 mtd erase kernel
 646                 tar xf "$1" sysupgrade-routerboard/kernel -O | nandwrite -o "$fw_mtd" -
 647                 ;;
 648         esac
 649 }
 650
 651 platform_do_upgrade() {
 652         local board=$(ar71xx_board_name)
 653
 654         case "$board" in
 655         rb-941-2nd)
 656                 PLATFORM_DO_UPGRADE_COMBINED_SEPARATE_MTD=1
 657                 platform_do_upgrade_combined "$ARGV"
 658                 ;;
 659         all0258n)
 660                 platform_do_upgrade_allnet "0x9f050000" "$ARGV"
 661                 ;;
 662         all0305|\
 663         eap7660d|\
 664         ja76pf2|\
 665         ja76pf|\
 666         jwap003|\
 667         ls-sr71|\
 668         pb42|\
 669         pb44|\
 670         routerstation-pro|\
 671         routerstation)
 672                 platform_do_upgrade_combined "$ARGV"
 673                 ;;
 674         all0315n)
 675                 platform_do_upgrade_allnet "0x9f080000" "$ARGV"
 676                 ;;
 677         cap4200ag|\
 678         eap300v2)
 679                 platform_do_upgrade_allnet "0xbf0a0000" "$ARGV"
 680                 ;;
 681         dir-825-b1|\
 682         tew-673gru)
 683                 platform_do_upgrade_dir825b "$ARGV"
 684                 ;;
 685         a40|\
 686         a60|\
 687         mr1750v2|\
 688         mr1750|\
 689         mr600v2|\
 690         mr600|\
 691         mr900v2|\
 692         mr900|\
 693         om2p-hsv2|\
 694         om2p-hsv3|\
 695         om2p-hsv4|\
 696         om2p-hs|\
 697         om2p-lc|\
 698         om2pv2|\
 699         om2pv4|\
 700         om2p|\
 701         om5p-acv2|\
 702         om5p-ac|\
 703         om5p-an|\
 704         om5p)
 705                 platform_do_upgrade_openmesh "$ARGV"
 706                 ;;
 707         uap-pro|\
 708         unifi-outdoor-plus)
 709                 MTD_CONFIG_ARGS="-s 0x180000"
 710                 default_do_upgrade "$ARGV"
 711                 ;;
 712         wp543|\
 713         wpe72)
 714                 platform_do_upgrade_compex "$ARGV"
 715                 ;;
 716         *)
 717                 default_do_upgrade "$ARGV"
 718                 ;;
 719         esac
 720 }
 721
 722 disable_watchdog() {
 723         killall watchdog
 724         ( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
 725                 echo 'Could not disable watchdog'
 726                 return 1
 727         }
 728 }
 729
 730 append sysupgrade_pre_upgrade disable_watchdog