2 # Watchdog device configuration
6 bool "Watchdog Timer Support"
8 If you say Y here (and to one of the following options) and create a
9 character special file /dev/watchdog with major number 10 and minor
10 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
11 subsequently opening the file and then failing to write to it for
12 longer than 1 minute will result in rebooting the machine. This
13 could be useful for a networked machine that needs to come back
14 on-line as fast as possible after a lock-up. There's both a watchdog
15 implementation entirely in software (which can sometimes fail to
16 reboot the machine) and a driver for hardware watchdog boards, which
17 are more robust and can also keep track of the temperature inside
18 your computer. For details, read <file:Documentation/watchdog/watchdog.txt>
21 The watchdog is usually used together with the watchdog daemon
22 which is available from
23 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
24 also monitor NFS connections and can reboot the machine when the process
31 config WATCHDOG_NOWAYOUT
32 bool "Disable watchdog shutdown on close"
34 The default watchdog behaviour (which you get if you say N here) is
35 to stop the timer if the process managing it closes the file
36 /dev/watchdog. It's always remotely possible that this process might
37 get killed. If you say Y here, the watchdog cannot be stopped once
41 # General Watchdog drivers
44 comment "Watchdog Device Drivers"
46 # Architecture Independent
49 tristate "Software watchdog"
51 A software monitoring watchdog. This will fail to reboot your system
52 from some situations that the hardware watchdog will recover
53 from. Equally it's a lot cheaper to install.
55 To compile this driver as a module, choose M here: the
56 module will be called softdog.
60 config AT91RM9200_WATCHDOG
61 tristate "AT91RM9200 watchdog"
62 depends on ARCH_AT91RM9200
64 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
65 system when the timeout is reached.
68 tristate "DC21285 watchdog"
71 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
72 here if you wish to use this. Alternatively say M to compile the
73 driver as a module, which will be called wdt285.
75 This driver does not work on all machines. In particular, early CATS
76 boards have hardware problems that will cause the machine to simply
77 lock up if the watchdog fires.
79 "If in doubt, leave it out" - say N.
82 tristate "NetWinder WB83C977 watchdog"
83 depends on FOOTBRIDGE && ARCH_NETWINDER
85 Say Y here to include support for the WB977 watchdog included in
86 NetWinder machines. Alternatively say M to compile the driver as
87 a module, which will be called wdt977.
89 Not sure? It's safe to say N.
91 config IXP2000_WATCHDOG
92 tristate "IXP2000 Watchdog"
93 depends on ARCH_IXP2000
95 Say Y here if to include support for the watchdog timer
96 in the Intel IXP2000(2400, 2800, 2850) network processors.
97 This driver can be built as a module by choosing M. The module
98 will be called ixp2000_wdt.
100 Say N if you are unsure.
102 config IXP4XX_WATCHDOG
103 tristate "IXP4xx Watchdog"
104 depends on ARCH_IXP4XX
106 Say Y here if to include support for the watchdog timer
107 in the Intel IXP4xx network processors. This driver can
108 be built as a module by choosing M. The module will
109 be called ixp4xx_wdt.
111 Note: The internal IXP4xx watchdog does a soft CPU reset
112 which doesn't reset any peripherals. There are circumstances
113 where the watchdog will fail to reset the board correctly
114 (e.g., if the boot ROM is in an unreadable state).
116 Say N if you are unsure.
118 config KS8695_WATCHDOG
119 tristate "KS8695 watchdog"
120 depends on ARCH_KS8695
122 Watchdog timer embedded into KS8695 processor. This will reboot your
123 system when the timeout is reached.
125 config S3C2410_WATCHDOG
126 tristate "S3C2410 Watchdog"
127 depends on ARCH_S3C2410
129 Watchdog timer block in the Samsung S3C2410 chips. This will
130 reboot the system when the timer expires with the watchdog
133 The driver is limited by the speed of the system's PCLK
134 signal, so with reasonably fast systems (PCLK around 50-66MHz)
135 then watchdog intervals of over approximately 20seconds are
138 The driver can be built as a module by choosing M, and will
139 be called s3c2410_wdt
141 config SA1100_WATCHDOG
142 tristate "SA1100/PXA2xx watchdog"
143 depends on ARCH_SA1100 || ARCH_PXA
145 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
146 reboot your system when timeout is reached.
148 NOTE: once enabled, this timer cannot be disabled.
150 To compile this driver as a module, choose M here: the
151 module will be called sa1100_wdt.
153 config MPCORE_WATCHDOG
154 tristate "MPcore watchdog"
155 depends on ARM_MPCORE_PLATFORM && LOCAL_TIMERS
157 Watchdog timer embedded into the MPcore system.
159 To compile this driver as a module, choose M here: the
160 module will be called mpcore_wdt.
162 config EP93XX_WATCHDOG
163 tristate "EP93xx Watchdog"
164 depends on ARCH_EP93XX
166 Say Y here if to include support for the watchdog timer
167 embedded in the Cirrus Logic EP93xx family of devices.
169 To compile this driver as a module, choose M here: the
170 module will be called ep93xx_wdt.
173 tristate "OMAP Watchdog"
174 depends on ARCH_OMAP16XX || ARCH_OMAP24XX
176 Support for TI OMAP1610/OMAP1710/OMAP2420 watchdog. Say 'Y' here to
177 enable the OMAP1610/OMAP1710 watchdog timer.
179 config PNX4008_WATCHDOG
180 tristate "PNX4008 Watchdog"
181 depends on ARCH_PNX4008
183 Say Y here if to include support for the watchdog timer
184 in the PNX4008 processor.
185 This driver can be built as a module by choosing M. The module
186 will be called pnx4008_wdt.
188 Say N if you are unsure.
192 config AT32AP700X_WDT
193 tristate "AT32AP700x watchdog"
194 depends on WATCHDOG && CPU_AT32AP7000
196 Watchdog timer embedded into AT32AP700x devices. This will reboot
197 your system when the timeout is reached.
199 config AT32AP700X_WDT_TIMEOUT
200 int "Timeout value for AT32AP700x watchdog"
201 depends on AT32AP700X_WDT
205 Sets the timeout value for the watchdog in AT32AP700x devices.
206 Limited by hardware to be 1 or 2 seconds.
208 Set to 2 seconds by default.
210 # X86 (i386 + ia64 + x86_64) Architecture
213 tristate "Acquire SBC Watchdog Timer"
216 This is the driver for the hardware watchdog on Single Board
217 Computers produced by Acquire Inc (and others). This watchdog
218 simply watches your kernel to make sure it doesn't freeze, and if
219 it does, it reboots your computer after a certain amount of time.
221 To compile this driver as a module, choose M here: the
222 module will be called acquirewdt.
224 Most people will say N.
227 tristate "Advantech SBC Watchdog Timer"
230 If you are configuring a Linux kernel for the Advantech single-board
231 computer, say `Y' here to support its built-in watchdog timer
232 feature. More information can be found at
233 <http://www.advantech.com.tw/products/>
236 tristate "ALi M1535 PMU Watchdog Timer"
237 depends on X86 && PCI
239 This is the driver for the hardware watchdog on the ALi M1535 PMU.
241 To compile this driver as a module, choose M here: the
242 module will be called alim1535_wdt.
244 Most people will say N.
247 tristate "ALi M7101 PMU Computer Watchdog"
248 depends on X86 && PCI
250 This is the driver for the hardware watchdog on the ALi M7101 PMU
251 as used in the x86 Cobalt servers.
253 To compile this driver as a module, choose M here: the
254 module will be called alim7101_wdt.
256 Most people will say N.
259 tristate "AMD Elan SC520 processor Watchdog"
262 This is the driver for the hardware watchdog built in to the
263 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
264 This watchdog simply watches your kernel to make sure it doesn't
265 freeze, and if it does, it reboots your computer after a certain
268 You can compile this driver directly into the kernel, or use
269 it as a module. The module will be called sc520_wdt.
272 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
275 Enable support for the watchdog timer on the Eurotech CPU-1220 and
276 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
277 information are at <http://www.eurotech.it/>.
280 tristate "IB700 SBC Watchdog Timer"
283 This is the driver for the hardware watchdog on the IB700 Single
284 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
285 simply watches your kernel to make sure it doesn't freeze, and if
286 it does, it reboots your computer after a certain amount of time.
288 This driver is like the WDT501 driver but for slightly different hardware.
290 To compile this driver as a module, choose M here: the
291 module will be called ib700wdt.
293 Most people will say N.
296 tristate "IBM Automatic Server Restart"
299 This is the driver for the IBM Automatic Server Restart watchdog
300 timer built-in into some eServer xSeries machines.
302 To compile this driver as a module, choose M here: the
303 module will be called ibmasr.
306 tristate "ICP Wafer 5823 Single Board Computer Watchdog"
309 This is a driver for the hardware watchdog on the ICP Wafer 5823
310 Single Board Computer (and probably other similar models).
312 To compile this driver as a module, choose M here: the
313 module will be called wafer5823wdt.
316 tristate "Intel 6300ESB Timer/Watchdog"
317 depends on X86 && PCI
319 Hardware driver for the watchdog timer built into the Intel
320 6300ESB controller hub.
322 To compile this driver as a module, choose M here: the
323 module will be called i6300esb.
326 tristate "Intel TCO Timer/Watchdog"
327 depends on (X86 || IA64) && PCI
329 Hardware driver for the intel TCO timer based watchdog devices.
330 These drivers are included in the Intel 82801 I/O Controller
331 Hub family (from ICH0 up to ICH8) and in the Intel 6300ESB
334 The TCO (Total Cost of Ownership) timer is a watchdog timer
335 that will reboot the machine after its second expiration. The
336 expiration time can be configured with the "heartbeat" parameter.
338 On some motherboards the driver may fail to reset the chipset's
339 NO_REBOOT flag which prevents the watchdog from rebooting the
340 machine. If this is the case you will get a kernel message like
341 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
343 To compile this driver as a module, choose M here: the
344 module will be called iTCO_wdt.
346 config ITCO_VENDOR_SUPPORT
347 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
350 Add vendor specific support to the intel TCO timer based watchdog
351 devices. At this moment we only have additional support for some
352 SuperMicro Inc. motherboards.
355 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
358 This is a driver for National Semiconductor PC87307/PC97307 hardware
359 watchdog cards as found on the SC1200. This watchdog is mainly used
360 for power management purposes and can be used to power down the device
361 during inactivity periods (includes interrupt activity monitoring).
363 To compile this driver as a module, choose M here: the
364 module will be called sc1200wdt.
366 Most people will say N.
369 tristate "National Semiconductor SCx200 Watchdog"
370 depends on SCx200 && PCI
372 Enable the built-in watchdog timer support on the National
373 Semiconductor SCx200 processors.
375 If compiled as a module, it will be called scx200_wdt.
378 tristate "NS PC87413 watchdog"
381 This is the driver for the hardware watchdog on the PC87413 chipset
382 This watchdog simply watches your kernel to make sure it doesn't
383 freeze, and if it does, it reboots your computer after a certain
386 To compile this driver as a module, choose M here: the
387 module will be called pc87413_wdt.
389 Most people will say N.
392 tristate "SBC-60XX Watchdog Timer"
395 This driver can be used with the watchdog timer found on some
396 single board computers, namely the 6010 PII based computer.
397 It may well work with other cards. It reads port 0x443 to enable
398 and re-set the watchdog timer, and reads port 0x45 to disable
399 the watchdog. If you have a card that behave in similar ways,
400 you can probably make this driver work with your card as well.
402 You can compile this driver directly into the kernel, or use
403 it as a module. The module will be called sbc60xxwdt.
406 tristate "SBC8360 Watchdog Timer"
410 This is the driver for the hardware watchdog on the SBC8360 Single
411 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
413 To compile this driver as a module, choose M here: the
414 module will be called sbc8360.ko.
416 Most people will say N.
419 tristate "SMA CPU5 Watchdog"
423 To compile this driver as a module, choose M here: the
424 module will be called cpu5wdt.
426 config SMSC37B787_WDT
427 tristate "Winbond SMsC37B787 Watchdog Timer"
430 This is the driver for the hardware watchdog component on the
431 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
432 from Vision Systems and maybe others.
434 This watchdog simply watches your kernel to make sure it doesn't
435 freeze, and if it does, it reboots your computer after a certain
438 Usually a userspace daemon will notify the kernel WDT driver that
439 userspace is still alive, at regular intervals.
441 To compile this driver as a module, choose M here: the
442 module will be called smsc37b787_wdt.
444 Most people will say N.
447 tristate "W83627HF Watchdog Timer"
450 This is the driver for the hardware watchdog on the W83627HF chipset
451 as used in Advantech PC-9578 and Tyan S2721-533 motherboards
452 (and likely others). This watchdog simply watches your kernel to
453 make sure it doesn't freeze, and if it does, it reboots your computer
454 after a certain amount of time.
456 To compile this driver as a module, choose M here: the
457 module will be called w83627hf_wdt.
459 Most people will say N.
462 tristate "W83697HF/W83697HG Watchdog Timer"
465 This is the driver for the hardware watchdog on the W83697HF/HG
466 chipset as used in Dedibox/VIA motherboards (and likely others).
467 This watchdog simply watches your kernel to make sure it doesn't
468 freeze, and if it does, it reboots your computer after a certain
471 To compile this driver as a module, choose M here: the
472 module will be called w83697hf_wdt.
474 Most people will say N.
477 tristate "W83877F (EMACS) Watchdog Timer"
480 This is the driver for the hardware watchdog on the W83877F chipset
481 as used in EMACS PC-104 motherboards (and likely others). This
482 watchdog simply watches your kernel to make sure it doesn't freeze,
483 and if it does, it reboots your computer after a certain amount of
486 To compile this driver as a module, choose M here: the
487 module will be called w83877f_wdt.
489 Most people will say N.
492 tristate "W83977F (PCM-5335) Watchdog Timer"
495 This is the driver for the hardware watchdog on the W83977F I/O chip
496 as used in AAEON's PCM-5335 SBC (and likely others). This
497 watchdog simply watches your kernel to make sure it doesn't freeze,
498 and if it does, it reboots your computer after a certain amount of
501 To compile this driver as a module, choose M here: the
502 module will be called w83977f_wdt.
505 tristate "ZF MachZ Watchdog"
508 If you are using a ZF Micro MachZ processor, say Y here, otherwise
509 N. This is the driver for the watchdog timer built-in on that
510 processor using ZF-Logic interface. This watchdog simply watches
511 your kernel to make sure it doesn't freeze, and if it does, it
512 reboots your computer after a certain amount of time.
514 To compile this driver as a module, choose M here: the
515 module will be called machzwd.
517 config SBC_EPX_C3_WATCHDOG
518 tristate "Winsystems SBC EPX-C3 watchdog"
521 This is the driver for the built-in watchdog timer on the EPX-C3
522 Single-board computer made by Winsystems, Inc.
524 *Note*: This hardware watchdog is not probeable and thus there
525 is no way to know if writing to its IO address will corrupt
526 your system or have any real effect. The only way to be sure
527 that this driver does what you want is to make sure you
528 are running it on an EPX-C3 from Winsystems with the watchdog
529 timer at IO address 0x1ee and 0x1ef. It will write to both those
530 IO ports. Basically, the assumption is made that if you compile
531 this driver into your kernel and/or load it as a module, that you
532 know what you are doing and that you are in fact running on an
535 To compile this driver as a module, choose M here: the
536 module will be called sbc_epx_c3.
538 # PowerPC Architecture
541 tristate "MPC8xx Watchdog Timer"
545 tristate "MPC83xx Watchdog Timer"
549 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
553 bool "PowerPC Book-E Watchdog Timer"
554 depends on BOOKE || 4xx
556 Please see Documentation/watchdog/watchdog-api.txt for
562 tristate "RTAS watchdog"
565 This driver adds watchdog support for the RTAS watchdog.
567 To compile this driver as a module, choose M here. The module
568 will be called wdrtas.
573 tristate "Indy/I2 Hardware Watchdog"
576 Hardware driver for the Indy's/I2's watchdog. This is a
577 watchdog timer that will reboot the machine after a 60 second
578 timer expired and no process has written to /dev/watchdog during
582 tristate "MTX-1 Hardware Watchdog"
585 Hardware driver for the MTX-1 boards. This is a watchdog timer that
586 will reboot the machine after a 100 seconds timer expired.
589 tristate "RM9000/GPI hardware watchdog"
590 depends on CPU_RM9000
592 Watchdog implementation using the GPI hardware found on
593 PMC-Sierra RM9xxx CPUs.
595 To compile this driver as a module, choose M here: the
596 module will be called rm9k_wdt.
601 tristate "z/VM Watchdog Timer"
604 IBM s/390 and zSeries machines running under z/VM 5.1 or later
605 provide a virtual watchdog timer to their guest that cause a
606 user define Control Program command to be executed after a
609 To compile this driver as a module, choose M here. The module
610 will be called vmwatchdog.
612 # SUPERH Architecture
615 tristate "SuperH Watchdog"
618 This driver adds watchdog support for the integrated watchdog in the
619 SuperH processors. If you have one of these processors and wish
620 to have watchdog support enabled, say Y, otherwise say N.
622 As a side note, saying Y here will automatically boost HZ to 1000
623 so that the timer has a chance to clear the overflow counter. On
624 slower systems (such as the SH-2 and SH-3) this will likely yield
625 some performance issues. As such, the WDT should be avoided here
626 unless it is absolutely necessary.
628 To compile this driver as a module, choose M here: the
629 module will be called shwdt.
632 bool "Allow mmap of SH WDT"
636 If you say Y here, user applications will be able to mmap the
639 # SPARC64 Architecture
641 config WATCHDOG_CP1XXX
642 tristate "CP1XXX Hardware Watchdog support"
643 depends on SPARC64 && PCI
645 This is the driver for the hardware watchdog timers present on
646 Sun Microsystems CompactPCI models CP1400 and CP1500.
648 To compile this driver as a module, choose M here: the
649 module will be called cpwatchdog.
651 If you do not have a CompactPCI model CP1400 or CP1500, or
652 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
653 you should say N to this option.
656 tristate "RIO Hardware Watchdog support"
657 depends on SPARC64 && PCI
659 Say Y here to support the hardware watchdog capability on Sun RIO
660 machines. The watchdog timeout period is normally one minute but
661 can be changed with a boot-time parameter.
664 # ISA-based Watchdog Cards
667 comment "ISA-based Watchdog Cards"
671 tristate "Berkshire Products ISA-PC Watchdog"
674 This is the driver for the Berkshire Products ISA-PC Watchdog card.
675 This card simply watches your kernel to make sure it doesn't freeze,
676 and if it does, it reboots your computer after a certain amount of
677 time. This driver is like the WDT501 driver but for different
678 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
679 watchdog cards can be ordered from <http://www.berkprod.com/>.
681 To compile this driver as a module, choose M here: the
682 module will be called pcwd.
684 Most people will say N.
687 tristate "Mixcom Watchdog"
690 This is a driver for the Mixcom hardware watchdog cards. This
691 watchdog simply watches your kernel to make sure it doesn't freeze,
692 and if it does, it reboots your computer after a certain amount of
695 To compile this driver as a module, choose M here: the
696 module will be called mixcomwd.
698 Most people will say N.
701 tristate "WDT Watchdog timer"
704 If you have a WDT500P or WDT501P watchdog board, say Y here,
705 otherwise N. It is not possible to probe for this board, which means
706 that you have to inform the kernel about the IO port and IRQ that
707 is needed (you can do this via the io and irq parameters)
709 To compile this driver as a module, choose M here: the
710 module will be called wdt.
713 bool "WDT501 features"
716 Saying Y here and creating a character special file /dev/temperature
717 with major number 10 and minor number 131 ("man mknod") will give
718 you a thermometer inside your computer: reading from
719 /dev/temperature yields one byte, the temperature in degrees
720 Fahrenheit. This works only if you have a WDT501P watchdog board
723 If you want to enable the Fan Tachometer on the WDT501P, then you
724 can do this via the tachometer parameter. Only do this if you have a
725 fan tachometer actually set up.
728 # PCI-based Watchdog Cards
731 comment "PCI-based Watchdog Cards"
735 tristate "Berkshire Products PCI-PC Watchdog"
738 This is the driver for the Berkshire Products PCI-PC Watchdog card.
739 This card simply watches your kernel to make sure it doesn't freeze,
740 and if it does, it reboots your computer after a certain amount of
741 time. The card can also monitor the internal temperature of the PC.
742 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
744 To compile this driver as a module, choose M here: the
745 module will be called pcwd_pci.
747 Most people will say N.
750 tristate "PCI-WDT500/501 Watchdog timer"
753 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
755 To compile this driver as a module, choose M here: the
756 module will be called wdt_pci.
759 bool "PCI-WDT501 features"
762 Saying Y here and creating a character special file /dev/temperature
763 with major number 10 and minor number 131 ("man mknod") will give
764 you a thermometer inside your computer: reading from
765 /dev/temperature yields one byte, the temperature in degrees
766 Fahrenheit. This works only if you have a PCI-WDT501 watchdog board
769 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
770 can do this via the tachometer parameter. Only do this if you have a
771 fan tachometer actually set up.
774 # USB-based Watchdog Cards
777 comment "USB-based Watchdog Cards"
781 tristate "Berkshire Products USB-PC Watchdog"
784 This is the driver for the Berkshire Products USB-PC Watchdog card.
785 This card simply watches your kernel to make sure it doesn't freeze,
786 and if it does, it reboots your computer after a certain amount of
787 time. The card can also monitor the internal temperature of the PC.
788 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
790 To compile this driver as a module, choose M here: the
791 module will be called pcwd_usb.
793 Most people will say N.