2 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 online as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read <file:Documentation/watchdog/watchdog.txt>
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26 also monitor NFS connections and can reboot the machine when the process
31 config WATCHDOG_NOWAYOUT
32 bool "Disable watchdog shutdown on close"
35 The default watchdog behaviour (which you get if you say N here) is
36 to stop the timer if the process managing it closes the file
37 /dev/watchdog. It's always remotely possible that this process might
38 get killed. If you say Y here, the watchdog cannot be stopped once
42 # General Watchdog drivers
45 comment "Watchdog Device Drivers"
48 # Architecture Independant
51 tristate "Software watchdog"
54 A software monitoring watchdog. This will fail to reboot your system
55 from some situations that the hardware watchdog will recover
56 from. Equally it's a lot cheaper to install.
58 To compile this driver as a module, choose M here: the
59 module will be called softdog.
64 tristate "DC21285 watchdog"
65 depends on WATCHDOG && FOOTBRIDGE
67 The Intel Footbridge chip contains a builtin watchdog circuit. Say Y
68 here if you wish to use this. Alternatively say M to compile the
69 driver as a module, which will be called wdt285.
71 This driver does not work on all machines. In particular, early CATS
72 boards have hardware problems that will cause the machine to simply
73 lock up if the watchdog fires.
75 "If in doubt, leave it out" - say N.
78 tristate "NetWinder WB83C977 watchdog"
79 depends on WATCHDOG && FOOTBRIDGE && ARCH_NETWINDER
81 Say Y here to include support for the WB977 watchdog included in
82 NetWinder machines. Alternatively say M to compile the driver as
83 a module, which will be called wdt977.
85 Not sure? It's safe to say N.
87 config IXP4XX_WATCHDOG
88 tristate "IXP4xx Watchdog"
89 depends on WATCHDOG && ARCH_IXP4XX
91 Say Y here if to include support for the watchdog timer
92 in the Intel IXP4xx network processors. This driver can
93 be built as a module by choosing M. The module will
96 Say N if you are unsure.
98 config SA1100_WATCHDOG
99 tristate "SA1100 watchdog"
100 depends on WATCHDOG && ARCH_SA1100
102 Watchdog timer embedded into SA11x0 chips. This will reboot your
103 system when timeout is reached.
104 NOTE, that once enabled, this timer cannot be disabled.
106 To compile this driver as a module, choose M here: the
107 module will be called sa1100_wdt.
109 # X86 (i386 + ia64 + x86_64) Architecture
112 tristate "Acquire SBC Watchdog Timer"
113 depends on WATCHDOG && X86
115 This is the driver for the hardware watchdog on Single Board
116 Computers produced by Acquire Inc (and others). This watchdog
117 simply watches your kernel to make sure it doesn't freeze, and if
118 it does, it reboots your computer after a certain amount of time.
120 To compile this driver as a module, choose M here: the
121 module will be called acquirewdt.
123 Most people will say N.
126 tristate "Advantech SBC Watchdog Timer"
127 depends on WATCHDOG && X86
129 If you are configuring a Linux kernel for the Advantech single-board
130 computer, say `Y' here to support its built-in watchdog timer
131 feature. More information can be found at
132 <http://www.advantech.com.tw/products/>
135 tristate "ALi M1535 PMU Watchdog Timer"
136 depends on WATCHDOG && X86 && PCI
138 This is the driver for the hardware watchdog on the ALi M1535 PMU.
140 To compile this driver as a module, choose M here: the
141 module will be called alim1535_wdt.
143 Most people will say N.
146 tristate "ALi M7101 PMU Computer Watchdog"
147 depends on WATCHDOG && X86 && PCI
149 This is the driver for the hardware watchdog on the ALi M7101 PMU
150 as used in the x86 Cobalt servers.
152 To compile this driver as a module, choose M here: the
153 module will be called alim7101_wdt.
155 Most people will say N.
158 tristate "AMD Elan SC520 processor Watchdog"
159 depends on WATCHDOG && X86
161 This is the driver for the hardware watchdog built in to the
162 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
163 This watchdog simply watches your kernel to make sure it doesn't
164 freeze, and if it does, it reboots your computer after a certain
167 You can compile this driver directly into the kernel, or use
168 it as a module. The module will be called sc520_wdt.
171 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
172 depends on WATCHDOG && X86
174 Enable support for the watchdog timer on the Eurotech CPU-1220 and
175 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
176 information are at <http://www.eurotech.it/>.
179 tristate "IB700 SBC Watchdog Timer"
180 depends on WATCHDOG && X86
182 This is the driver for the hardware watchdog on the IB700 Single
183 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
184 simply watches your kernel to make sure it doesn't freeze, and if
185 it does, it reboots your computer after a certain amount of time.
187 This driver is like the WDT501 driver but for slightly different hardware.
189 To compile this driver as a module, choose M here: the
190 module will be called ib700wdt.
192 Most people will say N.
195 tristate "ICP Wafer 5823 Single Board Computer Watchdog"
196 depends on WATCHDOG && X86
198 This is a driver for the hardware watchdog on the ICP Wafer 5823
199 Single Board Computer (and probably other similar models).
201 To compile this driver as a module, choose M here: the
202 module will be called wafer5823wdt.
205 tristate "Intel i8xx TCO Timer/Watchdog"
206 depends on WATCHDOG && (X86 || IA64) && PCI
208 Hardware driver for the TCO timer built into the Intel 82801
209 I/O Controller Hub family. The TCO (Total Cost of Ownership)
210 timer is a watchdog timer that will reboot the machine after
211 its second expiration. The expiration time can be configured
212 with the "heartbeat" parameter.
214 On some motherboards the driver may fail to reset the chipset's
215 NO_REBOOT flag which prevents the watchdog from rebooting the
216 machine. If this is the case you will get a kernel message like
217 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
219 To compile this driver as a module, choose M here: the
220 module will be called i8xx_tco.
223 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
224 depends on WATCHDOG && X86
226 This is a driver for National Semiconductor PC87307/PC97307 hardware
227 watchdog cards as found on the SC1200. This watchdog is mainly used
228 for power management purposes and can be used to power down the device
229 during inactivity periods (includes interrupt activity monitoring).
231 To compile this driver as a module, choose M here: the
232 module will be called sc1200wdt.
234 Most people will say N.
237 tristate "National Semiconductor SCx200 Watchdog"
238 depends on WATCHDOG && X86 && PCI
240 Enable the built-in watchdog timer support on the National
241 Semiconductor SCx200 processors.
243 If compiled as a module, it will be called scx200_watchdog.
246 tristate "SBC-60XX Watchdog Timer"
247 depends on WATCHDOG && X86
249 This driver can be used with the watchdog timer found on some
250 single board computers, namely the 6010 PII based computer.
251 It may well work with other cards. It reads port 0x443 to enable
252 and re-set the watchdog timer, and reads port 0x45 to disable
253 the watchdog. If you have a card that behave in similar ways,
254 you can probably make this driver work with your card as well.
256 You can compile this driver directly into the kernel, or use
257 it as a module. The module will be called sbc60xxwdt.
260 tristate "SMA CPU5 Watchdog"
261 depends on WATCHDOG && X86
264 To compile this driver as a module, choose M here: the
265 module will be called cpu5wdt.
268 tristate "W83627HF Watchdog Timer"
269 depends on WATCHDOG && X86
271 This is the driver for the hardware watchdog on the W83627HF chipset
272 as used in Advantech PC-9578 and Tyan S2721-533 motherboards
273 (and likely others). This watchdog simply watches your kernel to
274 make sure it doesn't freeze, and if it does, it reboots your computer
275 after a certain amount of time.
277 To compile this driver as a module, choose M here: the
278 module will be called w83627hf_wdt.
280 Most people will say N.
283 tristate "W83877F (EMACS) Watchdog Timer"
284 depends on WATCHDOG && X86
286 This is the driver for the hardware watchdog on the W83877F chipset
287 as used in EMACS PC-104 motherboards (and likely others). This
288 watchdog simply watches your kernel to make sure it doesn't freeze,
289 and if it does, it reboots your computer after a certain amount of
292 To compile this driver as a module, choose M here: the
293 module will be called w83877f_wdt.
295 Most people will say N.
298 tristate "ZF MachZ Watchdog"
299 depends on WATCHDOG && X86
301 If you are using a ZF Micro MachZ processor, say Y here, otherwise
302 N. This is the driver for the watchdog timer builtin on that
303 processor using ZF-Logic interface. This watchdog simply watches
304 your kernel to make sure it doesn't freeze, and if it does, it
305 reboots your computer after a certain amount of time.
307 To compile this driver as a module, choose M here: the
308 module will be called machzwd.
313 tristate "Indy/I2 Hardware Watchdog"
314 depends on WATCHDOG && SGI_IP22
316 Hardwaredriver for the Indy's/I2's watchdog. This is a
317 watchdog timer that will reboot the machine after a 60 second
318 timer expired and no process has written to /dev/watchdog during
321 # SUPERH Architecture
324 tristate "SuperH Watchdog"
325 depends on WATCHDOG && SUPERH
327 This driver adds watchdog support for the integrated watchdog in the
328 SuperH processors. If you have one of these processors and wish
329 to have watchdog support enabled, say Y, otherwise say N.
331 As a side note, saying Y here will automatically boost HZ to 1000
332 so that the timer has a chance to clear the overflow counter. On
333 slower systems (such as the SH-2 and SH-3) this will likely yield
334 some performance issues. As such, the WDT should be avoided here
335 unless it is absolutely necessary.
337 To compile this driver as a module, choose M here: the
338 module will be called shwdt.
340 # SPARC64 Architecture
342 config WATCHDOG_CP1XXX
343 tristate "CP1XXX Hardware Watchdog support"
344 depends on WATCHDOG && SPARC64 && PCI
346 This is the driver for the hardware watchdog timers present on
347 Sun Microsystems CompactPCI models CP1400 and CP1500.
349 To compile this driver as a module, choose M here: the
350 module will be called cpwatchdog.
352 If you do not have a CompactPCI model CP1400 or CP1500, or
353 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
354 you should say N to this option.
357 tristate "RIO Hardware Watchdog support"
358 depends on WATCHDOG && SPARC64 && PCI
360 Say Y here to support the hardware watchdog capability on Sun RIO
361 machines. The watchdog timeout period is normally one minute but
362 can be changed with a boot-time parameter.
365 # ISA-based Watchdog Cards
368 comment "ISA-based Watchdog Cards"
369 depends on WATCHDOG && ISA
372 tristate "Berkshire Products ISA-PC Watchdog"
373 depends on WATCHDOG && ISA
375 This is the driver for the Berkshire Products ISA-PC Watchdog card.
376 This card simply watches your kernel to make sure it doesn't freeze,
377 and if it does, it reboots your computer after a certain amount of
378 time. This driver is like the WDT501 driver but for different
379 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
380 watchdog cards can be ordered from <http://www.berkprod.com/>.
382 To compile this driver as a module, choose M here: the
383 module will be called pcwd.
385 Most people will say N.
388 tristate "Mixcom Watchdog"
389 depends on WATCHDOG && ISA
391 This is a driver for the Mixcom hardware watchdog cards. This
392 watchdog simply watches your kernel to make sure it doesn't freeze,
393 and if it does, it reboots your computer after a certain amount of
396 To compile this driver as a module, choose M here: the
397 module will be called mixcomwd.
399 Most people will say N.
402 tristate "WDT Watchdog timer"
403 depends on WATCHDOG && ISA
405 If you have a WDT500P or WDT501P watchdog board, say Y here,
406 otherwise N. It is not possible to probe for this board, which means
407 that you have to inform the kernel about the IO port and IRQ that
408 is needed (you can do this via the io and irq parameters)
410 To compile this driver as a module, choose M here: the
411 module will be called wdt.
414 bool "WDT501 features"
417 Saying Y here and creating a character special file /dev/temperature
418 with major number 10 and minor number 131 ("man mknod") will give
419 you a thermometer inside your computer: reading from
420 /dev/temperature yields one byte, the temperature in degrees
421 Fahrenheit. This works only if you have a WDT501P watchdog board
424 If you want to enable the Fan Tachometer on the WDT501P, then you
425 can do this via the tachometer parameter. Only do this if you have a
426 fan tachometer actually set up.
429 # PCI-based Watchdog Cards
432 comment "PCI-based Watchdog Cards"
433 depends on WATCHDOG && PCI
436 tristate "Berkshire Products PCI-PC Watchdog"
437 depends on WATCHDOG && PCI
439 This is the driver for the Berkshire Products PCI-PC Watchdog card.
440 This card simply watches your kernel to make sure it doesn't freeze,
441 and if it does, it reboots your computer after a certain amount of
442 time. The card can also monitor the internal temperature of the PC.
443 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
445 To compile this driver as a module, choose M here: the
446 module will be called pcwd_pci.
448 Most people will say N.
451 tristate "PCI-WDT500/501 Watchdog timer"
452 depends on WATCHDOG && PCI
454 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
456 To compile this driver as a module, choose M here: the
457 module will be called wdt_pci.
460 bool "PCI-WDT501 features"
463 Saying Y here and creating a character special file /dev/temperature
464 with major number 10 and minor number 131 ("man mknod") will give
465 you a thermometer inside your computer: reading from
466 /dev/temperature yields one byte, the temperature in degrees
467 Fahrenheit. This works only if you have a PCI-WDT501 watchdog board
470 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
471 can do this via the tachometer parameter. Only do this if you have a
472 fan tachometer actually set up.
475 # USB-based Watchdog Cards
478 comment "USB-based Watchdog Cards"
479 depends on WATCHDOG && USB
482 tristate "Berkshire Products USB-PC Watchdog"
483 depends on WATCHDOG && USB
485 This is the driver for the Berkshire Products USB-PC Watchdog card.
486 This card simply watches your kernel to make sure it doesn't freeze,
487 and if it does, it reboots your computer after a certain amount of
488 time. The card can also monitor the internal temperature of the PC.
489 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
491 To compile this driver as a module, choose M here: the
492 module will be called pcwd_usb.
494 Most people will say N.