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 S3C2410_WATCHDOG
119 tristate "S3C2410 Watchdog"
120 depends on ARCH_S3C2410
122 Watchdog timer block in the Samsung S3C2410 chips. This will
123 reboot the system when the timer expires with the watchdog
126 The driver is limited by the speed of the system's PCLK
127 signal, so with reasonably fast systems (PCLK around 50-66MHz)
128 then watchdog intervals of over approximately 20seconds are
131 The driver can be built as a module by choosing M, and will
132 be called s3c2410_wdt
134 config SA1100_WATCHDOG
135 tristate "SA1100/PXA2xx watchdog"
136 depends on ARCH_SA1100 || ARCH_PXA
138 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
139 reboot your system when timeout is reached.
141 NOTE: once enabled, this timer cannot be disabled.
143 To compile this driver as a module, choose M here: the
144 module will be called sa1100_wdt.
146 config MPCORE_WATCHDOG
147 tristate "MPcore watchdog"
148 depends on ARM_MPCORE_PLATFORM && LOCAL_TIMERS
150 Watchdog timer embedded into the MPcore system.
152 To compile this driver as a module, choose M here: the
153 module will be called mpcore_wdt.
155 config EP93XX_WATCHDOG
156 tristate "EP93xx Watchdog"
157 depends on ARCH_EP93XX
159 Say Y here if to include support for the watchdog timer
160 embedded in the Cirrus Logic EP93xx family of devices.
162 To compile this driver as a module, choose M here: the
163 module will be called ep93xx_wdt.
166 tristate "OMAP Watchdog"
167 depends on ARCH_OMAP16XX || ARCH_OMAP24XX
169 Support for TI OMAP1610/OMAP1710/OMAP2420 watchdog. Say 'Y' here to
170 enable the OMAP1610/OMAP1710 watchdog timer.
172 config PNX4008_WATCHDOG
173 tristate "PNX4008 Watchdog"
174 depends on ARCH_PNX4008
176 Say Y here if to include support for the watchdog timer
177 in the PNX4008 processor.
178 This driver can be built as a module by choosing M. The module
179 will be called pnx4008_wdt.
181 Say N if you are unsure.
183 # X86 (i386 + ia64 + x86_64) Architecture
186 tristate "Acquire SBC Watchdog Timer"
189 This is the driver for the hardware watchdog on Single Board
190 Computers produced by Acquire Inc (and others). This watchdog
191 simply watches your kernel to make sure it doesn't freeze, and if
192 it does, it reboots your computer after a certain amount of time.
194 To compile this driver as a module, choose M here: the
195 module will be called acquirewdt.
197 Most people will say N.
200 tristate "Advantech SBC Watchdog Timer"
203 If you are configuring a Linux kernel for the Advantech single-board
204 computer, say `Y' here to support its built-in watchdog timer
205 feature. More information can be found at
206 <http://www.advantech.com.tw/products/>
209 tristate "ALi M1535 PMU Watchdog Timer"
210 depends on X86 && PCI
212 This is the driver for the hardware watchdog on the ALi M1535 PMU.
214 To compile this driver as a module, choose M here: the
215 module will be called alim1535_wdt.
217 Most people will say N.
220 tristate "ALi M7101 PMU Computer Watchdog"
221 depends on X86 && PCI
223 This is the driver for the hardware watchdog on the ALi M7101 PMU
224 as used in the x86 Cobalt servers.
226 To compile this driver as a module, choose M here: the
227 module will be called alim7101_wdt.
229 Most people will say N.
232 tristate "AMD Elan SC520 processor Watchdog"
235 This is the driver for the hardware watchdog built in to the
236 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
237 This watchdog simply watches your kernel to make sure it doesn't
238 freeze, and if it does, it reboots your computer after a certain
241 You can compile this driver directly into the kernel, or use
242 it as a module. The module will be called sc520_wdt.
245 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
248 Enable support for the watchdog timer on the Eurotech CPU-1220 and
249 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
250 information are at <http://www.eurotech.it/>.
253 tristate "IB700 SBC Watchdog Timer"
256 This is the driver for the hardware watchdog on the IB700 Single
257 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
258 simply watches your kernel to make sure it doesn't freeze, and if
259 it does, it reboots your computer after a certain amount of time.
261 This driver is like the WDT501 driver but for slightly different hardware.
263 To compile this driver as a module, choose M here: the
264 module will be called ib700wdt.
266 Most people will say N.
269 tristate "IBM Automatic Server Restart"
272 This is the driver for the IBM Automatic Server Restart watchdog
273 timer built-in into some eServer xSeries machines.
275 To compile this driver as a module, choose M here: the
276 module will be called ibmasr.
279 tristate "ICP Wafer 5823 Single Board Computer Watchdog"
282 This is a driver for the hardware watchdog on the ICP Wafer 5823
283 Single Board Computer (and probably other similar models).
285 To compile this driver as a module, choose M here: the
286 module will be called wafer5823wdt.
289 tristate "Intel 6300ESB Timer/Watchdog"
290 depends on X86 && PCI
292 Hardware driver for the watchdog timer built into the Intel
293 6300ESB controller hub.
295 To compile this driver as a module, choose M here: the
296 module will be called i6300esb.
299 tristate "Intel TCO Timer/Watchdog"
300 depends on (X86 || IA64) && PCI
302 Hardware driver for the intel TCO timer based watchdog devices.
303 These drivers are included in the Intel 82801 I/O Controller
304 Hub family (from ICH0 up to ICH8) and in the Intel 6300ESB
307 The TCO (Total Cost of Ownership) timer is a watchdog timer
308 that will reboot the machine after its second expiration. The
309 expiration time can be configured with the "heartbeat" parameter.
311 On some motherboards the driver may fail to reset the chipset's
312 NO_REBOOT flag which prevents the watchdog from rebooting the
313 machine. If this is the case you will get a kernel message like
314 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
316 To compile this driver as a module, choose M here: the
317 module will be called iTCO_wdt.
319 config ITCO_VENDOR_SUPPORT
320 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
323 Add vendor specific support to the intel TCO timer based watchdog
324 devices. At this moment we only have additional support for some
325 SuperMicro Inc. motherboards.
328 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
331 This is a driver for National Semiconductor PC87307/PC97307 hardware
332 watchdog cards as found on the SC1200. This watchdog is mainly used
333 for power management purposes and can be used to power down the device
334 during inactivity periods (includes interrupt activity monitoring).
336 To compile this driver as a module, choose M here: the
337 module will be called sc1200wdt.
339 Most people will say N.
342 tristate "National Semiconductor SCx200 Watchdog"
343 depends on SCx200 && PCI
345 Enable the built-in watchdog timer support on the National
346 Semiconductor SCx200 processors.
348 If compiled as a module, it will be called scx200_wdt.
351 tristate "NS PC87413 watchdog"
354 This is the driver for the hardware watchdog on the PC87413 chipset
355 This watchdog simply watches your kernel to make sure it doesn't
356 freeze, and if it does, it reboots your computer after a certain
359 To compile this driver as a module, choose M here: the
360 module will be called pc87413_wdt.
362 Most people will say N.
365 tristate "SBC-60XX Watchdog Timer"
368 This driver can be used with the watchdog timer found on some
369 single board computers, namely the 6010 PII based computer.
370 It may well work with other cards. It reads port 0x443 to enable
371 and re-set the watchdog timer, and reads port 0x45 to disable
372 the watchdog. If you have a card that behave in similar ways,
373 you can probably make this driver work with your card as well.
375 You can compile this driver directly into the kernel, or use
376 it as a module. The module will be called sbc60xxwdt.
379 tristate "SBC8360 Watchdog Timer"
383 This is the driver for the hardware watchdog on the SBC8360 Single
384 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
386 To compile this driver as a module, choose M here: the
387 module will be called sbc8360.ko.
389 Most people will say N.
392 tristate "SMA CPU5 Watchdog"
396 To compile this driver as a module, choose M here: the
397 module will be called cpu5wdt.
399 config SMSC37B787_WDT
400 tristate "Winbond SMsC37B787 Watchdog Timer"
403 This is the driver for the hardware watchdog component on the
404 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
405 from Vision Systems and maybe others.
407 This watchdog simply watches your kernel to make sure it doesn't
408 freeze, and if it does, it reboots your computer after a certain
411 Usually a userspace daemon will notify the kernel WDT driver that
412 userspace is still alive, at regular intervals.
414 To compile this driver as a module, choose M here: the
415 module will be called smsc37b787_wdt.
417 Most people will say N.
420 tristate "W83627HF Watchdog Timer"
423 This is the driver for the hardware watchdog on the W83627HF chipset
424 as used in Advantech PC-9578 and Tyan S2721-533 motherboards
425 (and likely others). This watchdog simply watches your kernel to
426 make sure it doesn't freeze, and if it does, it reboots your computer
427 after a certain amount of time.
429 To compile this driver as a module, choose M here: the
430 module will be called w83627hf_wdt.
432 Most people will say N.
435 tristate "W83697HF/W83697HG Watchdog Timer"
438 This is the driver for the hardware watchdog on the W83697HF/HG
439 chipset as used in Dedibox/VIA motherboards (and likely others).
440 This watchdog simply watches your kernel to make sure it doesn't
441 freeze, and if it does, it reboots your computer after a certain
444 To compile this driver as a module, choose M here: the
445 module will be called w83697hf_wdt.
447 Most people will say N.
450 tristate "W83877F (EMACS) Watchdog Timer"
453 This is the driver for the hardware watchdog on the W83877F chipset
454 as used in EMACS PC-104 motherboards (and likely others). This
455 watchdog simply watches your kernel to make sure it doesn't freeze,
456 and if it does, it reboots your computer after a certain amount of
459 To compile this driver as a module, choose M here: the
460 module will be called w83877f_wdt.
462 Most people will say N.
465 tristate "W83977F (PCM-5335) Watchdog Timer"
468 This is the driver for the hardware watchdog on the W83977F I/O chip
469 as used in AAEON's PCM-5335 SBC (and likely others). This
470 watchdog simply watches your kernel to make sure it doesn't freeze,
471 and if it does, it reboots your computer after a certain amount of
474 To compile this driver as a module, choose M here: the
475 module will be called w83977f_wdt.
478 tristate "ZF MachZ Watchdog"
481 If you are using a ZF Micro MachZ processor, say Y here, otherwise
482 N. This is the driver for the watchdog timer built-in on that
483 processor using ZF-Logic interface. This watchdog simply watches
484 your kernel to make sure it doesn't freeze, and if it does, it
485 reboots your computer after a certain amount of time.
487 To compile this driver as a module, choose M here: the
488 module will be called machzwd.
490 config SBC_EPX_C3_WATCHDOG
491 tristate "Winsystems SBC EPX-C3 watchdog"
494 This is the driver for the built-in watchdog timer on the EPX-C3
495 Single-board computer made by Winsystems, Inc.
497 *Note*: This hardware watchdog is not probeable and thus there
498 is no way to know if writing to its IO address will corrupt
499 your system or have any real effect. The only way to be sure
500 that this driver does what you want is to make sure you
501 are running it on an EPX-C3 from Winsystems with the watchdog
502 timer at IO address 0x1ee and 0x1ef. It will write to both those
503 IO ports. Basically, the assumption is made that if you compile
504 this driver into your kernel and/or load it as a module, that you
505 know what you are doing and that you are in fact running on an
508 To compile this driver as a module, choose M here: the
509 module will be called sbc_epx_c3.
511 # PowerPC Architecture
514 tristate "MPC8xx Watchdog Timer"
518 tristate "MPC83xx Watchdog Timer"
522 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
526 bool "PowerPC Book-E Watchdog Timer"
527 depends on BOOKE || 4xx
529 Please see Documentation/watchdog/watchdog-api.txt for
535 tristate "RTAS watchdog"
538 This driver adds watchdog support for the RTAS watchdog.
540 To compile this driver as a module, choose M here. The module
541 will be called wdrtas.
546 tristate "Indy/I2 Hardware Watchdog"
549 Hardware driver for the Indy's/I2's watchdog. This is a
550 watchdog timer that will reboot the machine after a 60 second
551 timer expired and no process has written to /dev/watchdog during
555 tristate "MTX-1 Hardware Watchdog"
558 Hardware driver for the MTX-1 boards. This is a watchdog timer that
559 will reboot the machine after a 100 seconds timer expired.
562 tristate "RM9000/GPI hardware watchdog"
563 depends on CPU_RM9000
565 Watchdog implementation using the GPI hardware found on
566 PMC-Sierra RM9xxx CPUs.
568 To compile this driver as a module, choose M here: the
569 module will be called rm9k_wdt.
574 tristate "z/VM Watchdog Timer"
577 IBM s/390 and zSeries machines running under z/VM 5.1 or later
578 provide a virtual watchdog timer to their guest that cause a
579 user define Control Program command to be executed after a
582 To compile this driver as a module, choose M here. The module
583 will be called vmwatchdog.
585 # SUPERH Architecture
588 tristate "SuperH Watchdog"
591 This driver adds watchdog support for the integrated watchdog in the
592 SuperH processors. If you have one of these processors and wish
593 to have watchdog support enabled, say Y, otherwise say N.
595 As a side note, saying Y here will automatically boost HZ to 1000
596 so that the timer has a chance to clear the overflow counter. On
597 slower systems (such as the SH-2 and SH-3) this will likely yield
598 some performance issues. As such, the WDT should be avoided here
599 unless it is absolutely necessary.
601 To compile this driver as a module, choose M here: the
602 module will be called shwdt.
605 bool "Allow mmap of SH WDT"
609 If you say Y here, user applications will be able to mmap the
612 # SPARC64 Architecture
614 config WATCHDOG_CP1XXX
615 tristate "CP1XXX Hardware Watchdog support"
616 depends on SPARC64 && PCI
618 This is the driver for the hardware watchdog timers present on
619 Sun Microsystems CompactPCI models CP1400 and CP1500.
621 To compile this driver as a module, choose M here: the
622 module will be called cpwatchdog.
624 If you do not have a CompactPCI model CP1400 or CP1500, or
625 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
626 you should say N to this option.
629 tristate "RIO Hardware Watchdog support"
630 depends on SPARC64 && PCI
632 Say Y here to support the hardware watchdog capability on Sun RIO
633 machines. The watchdog timeout period is normally one minute but
634 can be changed with a boot-time parameter.
637 # ISA-based Watchdog Cards
640 comment "ISA-based Watchdog Cards"
644 tristate "Berkshire Products ISA-PC Watchdog"
647 This is the driver for the Berkshire Products ISA-PC Watchdog card.
648 This card simply watches your kernel to make sure it doesn't freeze,
649 and if it does, it reboots your computer after a certain amount of
650 time. This driver is like the WDT501 driver but for different
651 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
652 watchdog cards can be ordered from <http://www.berkprod.com/>.
654 To compile this driver as a module, choose M here: the
655 module will be called pcwd.
657 Most people will say N.
660 tristate "Mixcom Watchdog"
663 This is a driver for the Mixcom hardware watchdog cards. This
664 watchdog simply watches your kernel to make sure it doesn't freeze,
665 and if it does, it reboots your computer after a certain amount of
668 To compile this driver as a module, choose M here: the
669 module will be called mixcomwd.
671 Most people will say N.
674 tristate "WDT Watchdog timer"
677 If you have a WDT500P or WDT501P watchdog board, say Y here,
678 otherwise N. It is not possible to probe for this board, which means
679 that you have to inform the kernel about the IO port and IRQ that
680 is needed (you can do this via the io and irq parameters)
682 To compile this driver as a module, choose M here: the
683 module will be called wdt.
686 bool "WDT501 features"
689 Saying Y here and creating a character special file /dev/temperature
690 with major number 10 and minor number 131 ("man mknod") will give
691 you a thermometer inside your computer: reading from
692 /dev/temperature yields one byte, the temperature in degrees
693 Fahrenheit. This works only if you have a WDT501P watchdog board
696 If you want to enable the Fan Tachometer on the WDT501P, then you
697 can do this via the tachometer parameter. Only do this if you have a
698 fan tachometer actually set up.
701 # PCI-based Watchdog Cards
704 comment "PCI-based Watchdog Cards"
708 tristate "Berkshire Products PCI-PC Watchdog"
711 This is the driver for the Berkshire Products PCI-PC Watchdog card.
712 This card simply watches your kernel to make sure it doesn't freeze,
713 and if it does, it reboots your computer after a certain amount of
714 time. The card can also monitor the internal temperature of the PC.
715 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
717 To compile this driver as a module, choose M here: the
718 module will be called pcwd_pci.
720 Most people will say N.
723 tristate "PCI-WDT500/501 Watchdog timer"
726 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
728 To compile this driver as a module, choose M here: the
729 module will be called wdt_pci.
732 bool "PCI-WDT501 features"
735 Saying Y here and creating a character special file /dev/temperature
736 with major number 10 and minor number 131 ("man mknod") will give
737 you a thermometer inside your computer: reading from
738 /dev/temperature yields one byte, the temperature in degrees
739 Fahrenheit. This works only if you have a PCI-WDT501 watchdog board
742 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
743 can do this via the tachometer parameter. Only do this if you have a
744 fan tachometer actually set up.
747 # USB-based Watchdog Cards
750 comment "USB-based Watchdog Cards"
754 tristate "Berkshire Products USB-PC Watchdog"
757 This is the driver for the Berkshire Products USB-PC Watchdog card.
758 This card simply watches your kernel to make sure it doesn't freeze,
759 and if it does, it reboots your computer after a certain amount of
760 time. The card can also monitor the internal temperature of the PC.
761 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
763 To compile this driver as a module, choose M here: the
764 module will be called pcwd_usb.
766 Most people will say N.