ar71xx: add support for Rockeetech AP531B0
[oweals/openwrt.git] / 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         ap531b0|\
208         ap90q|\
209         archer-c59-v1|\
210         archer-c60-v1|\
211         bullet-m|\
212         c-55|\
213         carambola2|\
214         cf-e316n-v2|\
215         cf-e320n-v2|\
216         cf-e380ac-v1|\
217         cf-e380ac-v2|\
218         cf-e520n|\
219         cf-e530n|\
220         cpe830|\
221         cpe870|\
222         dgl-5500-a1|\
223         dhp-1565-a1|\
224         dir-505-a1|\
225         dir-600-a1|\
226         dir-615-c1|\
227         dir-615-e1|\
228         dir-615-e4|\
229         dir-615-i1|\
230         dir-825-c1|\
231         dir-835-a1|\
232         dlan-hotspot|\
233         dlan-pro-1200-ac|\
234         dlan-pro-500-wp|\
235         dr531|\
236         dragino2|\
237         ebr-2310-c1|\
238         epg5000|\
239         esr1750|\
240         esr900|\
241         ew-dorin-router|\
242         ew-dorin|\
243         gl-ar150|\
244         gl-ar300m|\
245         gl-ar300|\
246         gl-domino|\
247         gl-mifi|\
248         hiwifi-hc6361|\
249         hornet-ub-x2|\
250         jwap230|\
251         lima|\
252         loco-m-xw|\
253         mzk-w04nu|\
254         mzk-w300nh|\
255         nanostation-m-xw|\
256         nanostation-m|\
257         nbg460n_550n_550nh|\
258         pqi-air-pen|\
259         rocket-m-ti|\
260         rocket-m-xw|\
261         rocket-m|\
262         rw2458n|\
263         sc1750|\
264         sc300m|\
265         sc450|\
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 "$1" && return 0
337                 return 1
338                 ;;
339         all0305|\
340         eap300v2|\
341         eap7660d|\
342         ja76pf2|\
343         ja76pf|\
344         jwap003|\
345         ls-sr71|\
346         pb42|\
347         pb44|\
348         routerstation-pro|\
349         routerstation|\
350         wp543|\
351         wpe72)
352                 [ "$magic" != "4349" ] && {
353                         echo "Invalid image. Use *-sysupgrade.bin files on this board"
354                         return 1
355                 }
356
357                 local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
358                 local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
359
360                 if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
361                         return 0
362                 else
363                         echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
364                         return 1
365                 fi
366
367                 return 0
368                 ;;
369         antminer-s1|\
370         antminer-s3|\
371         antrouter-r1|\
372         archer-c5|\
373         archer-c7|\
374         el-m150|\
375         el-mini|\
376         gl-inet|\
377         mc-mac1200r|\
378         minibox-v1|\
379         omy-g1|\
380         omy-x1|\
381         onion-omega|\
382         oolite|\
383         re450|\
384         smart-300|\
385         som9331|\
386         tellstick-znet-lite|\
387         tl-mr10u|\
388         tl-mr11u|\
389         tl-mr12u|\
390         tl-mr13u|\
391         tl-mr3020|\
392         tl-mr3040-v2|\
393         tl-mr3040|\
394         tl-mr3220-v2|\
395         tl-mr3220|\
396         tl-mr3420-v2|\
397         tl-mr3420|\
398         tl-wa701nd-v2|\
399         tl-wa7210n-v2|\
400         tl-wa750re|\
401         tl-wa7510n|\
402         tl-wa801nd-v2|\
403         tl-wa801nd-v3|\
404         tl-wa830re-v2|\
405         tl-wa850re|\
406         tl-wa850re-v2|\
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-wr802n-v2|\
430         tl-wr810n|\
431         tl-wr841n-v11|\
432         tl-wr841n-v1|\
433         tl-wr841n-v7|\
434         tl-wr841n-v8|\
435         tl-wr841n-v9|\
436         tl-wr842n-v2|\
437         tl-wr842n-v3|\
438         tl-wr941nd-v5|\
439         tl-wr941nd-v6|\
440         tl-wr940n-v4|\
441         tl-wr941nd)
442                 local magic_ver="0100"
443
444                 case "$board" in
445                 tl-wdr6500-v2)
446                         magic_ver="0200"
447                         ;;
448                 esac
449
450                 [ "$magic" != "$magic_ver" ] && {
451                         echo "Invalid image type."
452                         return 1
453                 }
454
455                 local hwid
456                 local mid
457                 local imagehwid
458                 local imagemid
459
460                 hwid=$(tplink_get_hwid)
461                 mid=$(tplink_get_mid)
462                 imagehwid=$(tplink_get_image_hwid "$1")
463                 imagemid=$(tplink_get_image_mid "$1")
464
465                 [ "$hwid" != "$imagehwid" -o "$mid" != "$imagemid" ] && {
466                         echo "Invalid image, hardware ID mismatch, hw:$hwid $mid image:$imagehwid $imagemid."
467                         return 1
468                 }
469
470                 local boot_size
471
472                 boot_size=$(tplink_get_image_boot_size "$1")
473                 [ "$boot_size" != "00000000" ] && {
474                         echo "Invalid image, it contains a bootloader."
475                         return 1
476                 }
477
478                 return 0
479                 ;;
480         bsb|\
481         dir-825-b1|\
482         tew-673gru)
483                 dir825b_check_image "$1" && return 0
484                 ;;
485         rb-411|\
486         rb-411u|\
487         rb-433|\
488         rb-433u|\
489         rb-435g|\
490         rb-450|\
491         rb-450g|\
492         rb-493|\
493         rb-493g|\
494         rb-750|\
495         rb-750gl|\
496         rb-751|\
497         rb-751g|\
498         rb-911g-2hpnd|\
499         rb-911g-5hpnd|\
500         rb-911g-5hpacd|\
501         rb-912uag-2hpnd|\
502         rb-912uag-5hpnd|\
503         rb-951g-2hnd|\
504         rb-951ui-2hnd|\
505         rb-2011l|\
506         rb-2011uas|\
507         rb-2011uias|\
508         rb-2011uas-2hnd|\
509         rb-2011uias-2hnd|\
510         rb-sxt2n|\
511         rb-sxt5n)
512                 nand_do_platform_check routerboard $1
513                 return $?
514                 ;;
515         c-60|\
516         nbg6716|\
517         r6100|\
518         wndr3700v4|\
519         wndr4300)
520                 nand_do_platform_check $board $1
521                 return $?
522                 ;;
523         cpe210|\
524         cpe510|\
525         eap120|\
526         wbs210|\
527         wbs510)
528                 tplink_pharos_check_image "$1" && return 0
529                 return 1
530                 ;;
531         a40|\
532         a60|\
533         mr1750v2|\
534         mr1750|\
535         mr600v2|\
536         mr600|\
537         mr900v2|\
538         mr900|\
539         om2p-hsv2|\
540         om2p-hsv3|\
541         om2p-hsv4|\
542         om2p-hs|\
543         om2p-lc|\
544         om2pv2|\
545         om2pv4|\
546         om2p|\
547         om5p-acv2|\
548         om5p-ac|\
549         om5p-an|\
550         om5p)
551                 platform_check_image_openmesh "$magic_long" "$1" && return 0
552                 return 1
553                 ;;
554         mr18|\
555         z1)
556                 merakinand_do_platform_check $board $1
557                 return $?
558                 ;;
559         dir-869-a1|\
560         mynet-n600|\
561         mynet-n750|\
562         qihoo-c301)
563                 [ "$magic_long" != "5ea3a417" ] && {
564                         echo "Invalid image, bad magic: $magic_long"
565                         return 1
566                 }
567
568                 local typemagic=$(seama_get_type_magic "$1")
569                 [ "$typemagic" != "6669726d" ] && {
570                         echo "Invalid image, bad type: $typemagic"
571                         return 1
572                 }
573
574                 return 0
575                 ;;
576         e2100l|\
577         mynet-rext|\
578         wrt160nl)
579                 cybertan_check_image "$1" && return 0
580                 return 1
581                 ;;
582         nbg6616|\
583         uap-pro|\
584         unifi-outdoor-plus)
585                 [ "$magic_long" != "19852003" ] && {
586                         echo "Invalid image type."
587                         return 1
588                 }
589
590                 return 0
591                 ;;
592         tube2h)
593                 alfa_check_image "$1" && return 0
594                 return 1
595                 ;;
596         wndr3700|\
597         wnr1000-v2|\
598         wnr2000-v3|\
599         wnr612-v2|\
600         wpn824n)
601                 local hw_magic
602
603                 hw_magic="$(ar71xx_get_mtd_part_magic firmware)"
604                 [ "$magic_long" != "$hw_magic" ] && {
605                         echo "Invalid image, hardware ID mismatch, hw:$hw_magic image:$magic_long."
606                         return 1
607                 }
608
609                 return 0
610                 ;;
611         wnr2000-v4)
612                 [ "$magic_long" != "32303034" ] && {
613                         echo "Invalid image type."
614                         return 1
615                 }
616
617                 return 0
618                 ;;
619         wnr2200)
620                 [ "$magic_long" != "32323030" ] && {
621                         echo "Invalid image type."
622                         return 1
623                 }
624
625                 return 0
626                 ;;
627         dap-2695-a1)
628                 local magic=$(wrgg_get_image_magic "$1")
629                 [ "$magic" != "21030820" ] && {
630                         echo "Invalid image, bad type: $magic"
631                         return 1
632                 }
633
634                 return 0;
635                 ;;
636         # these boards use metadata images
637         rb-750-r2|\
638         rb-750up-r2|\
639         rb-941-2nd|\
640         rb-951ui-2nd|\
641         rb-mapl-2nd)
642                 return 0
643                 ;;
644         esac
645
646         echo "Sysupgrade is not yet supported on $board."
647         return 1
648 }
649
650 platform_pre_upgrade() {
651         local board=$(ar71xx_board_name)
652
653         case "$board" in
654         c-60|\
655         nbg6716|\
656         r6100|\
657         rb-411|\
658         rb-411u|\
659         rb-433|\
660         rb-433u|\
661         rb-435g|\
662         rb-450|\
663         rb-450g|\
664         rb-493|\
665         rb-493g|\
666         rb-750|\
667         rb-750gl|\
668         rb-751|\
669         rb-751g|\
670         rb-911g-2hpnd|\
671         rb-911g-5hpnd|\
672         rb-911g-5hpacd|\
673         rb-912uag-2hpnd|\
674         rb-912uag-5hpnd|\
675         rb-951g-2hnd|\
676         rb-951ui-2hnd|\
677         rb-2011l|\
678         rb-2011uas|\
679         rb-2011uias|\
680         rb-2011uas-2hnd|\
681         rb-2011uias-2hnd|\
682         rb-sxt2n|\
683         rb-sxt5n|\
684         wndr3700v4|\
685         wndr4300)
686                 nand_do_upgrade "$1"
687                 ;;
688         rb-750-r2|\
689         rb-750up-r2|\
690         rb-941-2nd|\
691         rb-951ui-2nd|\
692         rb-mapl-2nd)
693                 # erase firmware if booted from initramfs
694                 [ -z "$(rootfs_type)" ] && mtd erase firmware
695                 ;;
696         mr18|\
697         z1)
698                 merakinand_do_upgrade "$1"
699                 ;;
700         esac
701 }
702
703 platform_nand_pre_upgrade() {
704         local board=$(ar71xx_board_name)
705
706         case "$board" in
707         rb*)
708                 CI_KERNPART=none
709                 local fw_mtd=$(find_mtd_part kernel)
710                 fw_mtd="${fw_mtd/block/}"
711                 [ -n "$fw_mtd" ] || return
712                 mtd erase kernel
713                 tar xf "$1" sysupgrade-routerboard/kernel -O | nandwrite -o "$fw_mtd" -
714                 ;;
715         esac
716 }
717
718 platform_do_upgrade() {
719         local board=$(ar71xx_board_name)
720
721         case "$board" in
722         all0258n)
723                 platform_do_upgrade_allnet "0x9f050000" "$ARGV"
724                 ;;
725         all0305|\
726         eap7660d|\
727         ja76pf2|\
728         ja76pf|\
729         jwap003|\
730         ls-sr71|\
731         pb42|\
732         pb44|\
733         routerstation-pro|\
734         routerstation)
735                 platform_do_upgrade_combined "$ARGV"
736                 ;;
737         all0315n)
738                 platform_do_upgrade_allnet "0x9f080000" "$ARGV"
739                 ;;
740         cap4200ag|\
741         eap300v2)
742                 platform_do_upgrade_allnet "0xbf0a0000" "$ARGV"
743                 ;;
744         dir-825-b1|\
745         tew-673gru)
746                 platform_do_upgrade_dir825b "$ARGV"
747                 ;;
748         a40|\
749         a60|\
750         mr1750v2|\
751         mr1750|\
752         mr600v2|\
753         mr600|\
754         mr900v2|\
755         mr900|\
756         om2p-hsv2|\
757         om2p-hsv3|\
758         om2p-hsv4|\
759         om2p-hs|\
760         om2p-lc|\
761         om2pv2|\
762         om2pv4|\
763         om2p|\
764         om5p-acv2|\
765         om5p-ac|\
766         om5p-an|\
767         om5p)
768                 platform_do_upgrade_openmesh "$ARGV"
769                 ;;
770         uap-pro|\
771         unifi-outdoor-plus)
772                 MTD_CONFIG_ARGS="-s 0x180000"
773                 default_do_upgrade "$ARGV"
774                 ;;
775         wp543|\
776         wpe72)
777                 platform_do_upgrade_compex "$ARGV"
778                 ;;
779         *)
780                 default_do_upgrade "$ARGV"
781                 ;;
782         esac
783 }
784
785 disable_watchdog() {
786         killall watchdog
787         ( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
788                 echo 'Could not disable watchdog'
789                 return 1
790         }
791 }
792
793 append sysupgrade_pre_upgrade disable_watchdog