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
19 <file:Documentation/watchdog/watchdog-api.txt> in the kernel source.
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
32 bool "WatchDog Timer Driver Core"
34 Say Y here if you want to use the new watchdog timer driver core.
35 This driver provides a framework for all watchdog timer drivers
36 and gives them the /dev/watchdog interface (and later also the
39 config WATCHDOG_NOWAYOUT
40 bool "Disable watchdog shutdown on close"
42 The default watchdog behaviour (which you get if you say N here) is
43 to stop the timer if the process managing it closes the file
44 /dev/watchdog. It's always remotely possible that this process might
45 get killed. If you say Y here, the watchdog cannot be stopped once
49 # General Watchdog drivers
52 comment "Watchdog Device Drivers"
54 # Architecture Independent
57 tristate "Software watchdog"
60 A software monitoring watchdog. This will fail to reboot your system
61 from some situations that the hardware watchdog will recover
62 from. Equally it's a lot cheaper to install.
64 To compile this driver as a module, choose M here: the
65 module will be called softdog.
67 config DA9052_WATCHDOG
68 tristate "Dialog DA9052 Watchdog"
69 depends on PMIC_DA9052
72 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
75 Say Y here to include support for the DA9052 watchdog.
76 Alternatively say M to compile the driver as a module,
77 which will be called da9052_wdt.
79 config DA9055_WATCHDOG
80 tristate "Dialog Semiconductor DA9055 Watchdog"
84 If you say yes here you get support for watchdog on the Dialog
85 Semiconductor DA9055 PMIC.
87 This driver can also be built as a module. If so, the module
88 will be called da9055_wdt.
91 tristate "Watchdog device controlled through GPIO-line"
95 If you say yes here you get support for watchdog device
96 controlled through GPIO-line.
98 config MENF21BMC_WATCHDOG
99 tristate "MEN 14F021P00 BMC Watchdog"
100 depends on MFD_MENF21BMC
103 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
105 This driver can also be built as a module. If so the module
106 will be called menf21bmc_wdt.
108 config WM831X_WATCHDOG
109 tristate "WM831x watchdog"
110 depends on MFD_WM831X
113 Support for the watchdog in the WM831x AudioPlus PMICs. When
114 the watchdog triggers the system will be reset.
116 config WM8350_WATCHDOG
117 tristate "WM8350 watchdog"
118 depends on MFD_WM8350
121 Support for the watchdog in the WM8350 AudioPlus PMIC. When
122 the watchdog triggers the system will be reset.
124 config XILINX_WATCHDOG
125 tristate "Xilinx Watchdog timer"
128 Watchdog driver for the xps_timebase_wdt ip core.
130 To compile this driver as a module, choose M here: the
131 module will be called of_xilinx_wdt.
137 config ARM_SP805_WATCHDOG
138 tristate "ARM SP805 Watchdog"
139 depends on (ARM || ARM64) && ARM_AMBA
142 ARM Primecell SP805 Watchdog timer. This will reboot your system when
143 the timeout is reached.
145 config AT91RM9200_WATCHDOG
146 tristate "AT91RM9200 watchdog"
147 depends on ARCH_AT91RM9200
149 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
150 system when the timeout is reached.
152 config AT91SAM9X_WATCHDOG
153 tristate "AT91SAM9X / AT91CAP9 watchdog"
154 depends on ARCH_AT91 && !ARCH_AT91RM9200
157 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
158 reboot your system when the timeout is reached.
160 config 21285_WATCHDOG
161 tristate "DC21285 watchdog"
162 depends on FOOTBRIDGE
164 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
165 here if you wish to use this. Alternatively say M to compile the
166 driver as a module, which will be called wdt285.
168 This driver does not work on all machines. In particular, early CATS
169 boards have hardware problems that will cause the machine to simply
170 lock up if the watchdog fires.
172 "If in doubt, leave it out" - say N.
175 tristate "NetWinder WB83C977 watchdog"
176 depends on FOOTBRIDGE && ARCH_NETWINDER
178 Say Y here to include support for the WB977 watchdog included in
179 NetWinder machines. Alternatively say M to compile the driver as
180 a module, which will be called wdt977.
182 Not sure? It's safe to say N.
184 config IXP4XX_WATCHDOG
185 tristate "IXP4xx Watchdog"
186 depends on ARCH_IXP4XX
188 Say Y here if to include support for the watchdog timer
189 in the Intel IXP4xx network processors. This driver can
190 be built as a module by choosing M. The module will
191 be called ixp4xx_wdt.
193 Note: The internal IXP4xx watchdog does a soft CPU reset
194 which doesn't reset any peripherals. There are circumstances
195 where the watchdog will fail to reset the board correctly
196 (e.g., if the boot ROM is in an unreadable state).
198 Say N if you are unsure.
200 config KS8695_WATCHDOG
201 tristate "KS8695 watchdog"
202 depends on ARCH_KS8695
204 Watchdog timer embedded into KS8695 processor. This will reboot your
205 system when the timeout is reached.
207 config HAVE_S3C2410_WATCHDOG
210 This will include watchdog timer support for Samsung SoCs. If
211 you want to include watchdog support for any machine, kindly
212 select this in the respective mach-XXXX/Kconfig file.
214 config S3C2410_WATCHDOG
215 tristate "S3C2410 Watchdog"
216 depends on HAVE_S3C2410_WATCHDOG
218 select MFD_SYSCON if ARCH_EXYNOS5
220 Watchdog timer block in the Samsung SoCs. This will reboot
221 the system when the timer expires with the watchdog enabled.
223 The driver is limited by the speed of the system's PCLK
224 signal, so with reasonably fast systems (PCLK around 50-66MHz)
225 then watchdog intervals of over approximately 20seconds are
228 The driver can be built as a module by choosing M, and will
229 be called s3c2410_wdt
231 config SA1100_WATCHDOG
232 tristate "SA1100/PXA2xx watchdog"
233 depends on ARCH_SA1100 || ARCH_PXA
235 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
236 reboot your system when timeout is reached.
238 NOTE: once enabled, this timer cannot be disabled.
240 To compile this driver as a module, choose M here: the
241 module will be called sa1100_wdt.
244 tristate "Synopsys DesignWare watchdog"
247 Say Y here if to include support for the Synopsys DesignWare
248 watchdog timer found in many chips.
249 To compile this driver as a module, choose M here: the
250 module will be called dw_wdt.
252 config EP93XX_WATCHDOG
253 tristate "EP93xx Watchdog"
254 depends on ARCH_EP93XX
257 Say Y here if to include support for the watchdog timer
258 embedded in the Cirrus Logic EP93xx family of devices.
260 To compile this driver as a module, choose M here: the
261 module will be called ep93xx_wdt.
264 tristate "OMAP Watchdog"
265 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS
268 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
269 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
271 config PNX4008_WATCHDOG
272 tristate "LPC32XX Watchdog"
273 depends on ARCH_LPC32XX
276 Say Y here if to include support for the watchdog timer
277 in the LPC32XX processor.
278 This driver can be built as a module by choosing M. The module
279 will be called pnx4008_wdt.
281 Say N if you are unsure.
284 tristate "IOP Watchdog"
285 depends on ARCH_IOP13XX
286 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
288 Say Y here if to include support for the watchdog timer
289 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
290 be built as a module by choosing M. The module will
293 Note: The IOP13XX watchdog does an Internal Bus Reset which will
294 affect both cores and the peripherals of the IOP. The ATU-X
295 and/or ATUe configuration registers will remain intact, but if
296 operating as an Root Complex and/or Central Resource, the PCI-X
297 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
299 config DAVINCI_WATCHDOG
300 tristate "DaVinci watchdog"
301 depends on ARCH_DAVINCI || ARCH_KEYSTONE
304 Say Y here if to include support for the watchdog timer
305 in the DaVinci DM644x/DM646x or Keystone processors.
306 To compile this driver as a module, choose M here: the
307 module will be called davinci_wdt.
309 NOTE: once enabled, this timer cannot be disabled.
310 Say N if you are unsure.
312 config ORION_WATCHDOG
313 tristate "Orion watchdog"
314 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU
317 Say Y here if to include support for the watchdog timer
318 in the Marvell Orion5x and Kirkwood ARM SoCs.
319 To compile this driver as a module, choose M here: the
320 module will be called orion_wdt.
322 config SUNXI_WATCHDOG
323 tristate "Allwinner SoCs watchdog support"
324 depends on ARCH_SUNXI
327 Say Y here to include support for the watchdog timer
329 To compile this driver as a module, choose M here: the
330 module will be called sunxi_wdt.
332 config COH901327_WATCHDOG
333 bool "ST-Ericsson COH 901 327 watchdog"
335 default y if MACH_U300
338 Say Y here to include Watchdog timer support for the
339 watchdog embedded into the ST-Ericsson U300 series platforms.
340 This watchdog is used to reset the system and thus cannot be
341 compiled as a module.
343 config TWL4030_WATCHDOG
344 tristate "TWL4030 Watchdog"
345 depends on TWL4030_CORE
348 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
349 watchdog timer support for TWL4030 chips.
351 config STMP3XXX_RTC_WATCHDOG
352 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
353 depends on RTC_DRV_STMP
356 Say Y here to include support for the watchdog timer inside
357 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
358 To compile this driver as a module, choose M here: the
359 module will be called stmp3xxx_rtc_wdt.
361 config NUC900_WATCHDOG
362 tristate "Nuvoton NUC900 watchdog"
363 depends on ARCH_W90X900
365 Say Y here if to include support for the watchdog timer
366 for the Nuvoton NUC900 series SoCs.
367 To compile this driver as a module, choose M here: the
368 module will be called nuc900_wdt.
370 config TS72XX_WATCHDOG
371 tristate "TS-72XX SBC Watchdog"
372 depends on MACH_TS72XX
374 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
375 watchdog timer implemented in a external CPLD chip. Say Y here
376 if you want to support for the watchdog timer on TS-72XX boards.
378 To compile this driver as a module, choose M here: the
379 module will be called ts72xx_wdt.
381 config MAX63XX_WATCHDOG
382 tristate "Max63xx watchdog"
383 depends on ARM && HAS_IOMEM
386 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
389 tristate "IMX2+ Watchdog"
394 This is the driver for the hardware watchdog
395 on the Freescale IMX2 and later processors.
396 If you have one of these processors and wish to have
397 watchdog support enabled, say Y, otherwise say N.
399 To compile this driver as a module, choose M here: the
400 module will be called imx2_wdt.
402 config UX500_WATCHDOG
403 tristate "ST-Ericsson Ux500 watchdog"
404 depends on MFD_DB8500_PRCMU
408 Say Y here to include Watchdog timer support for the watchdog
409 existing in the prcmu of ST-Ericsson Ux500 series platforms.
411 To compile this driver as a module, choose M here: the
412 module will be called ux500_wdt.
415 tristate "Retu watchdog"
419 Retu watchdog driver for Nokia Internet Tablets (770, N800,
420 N810). At least on N800 the watchdog cannot be disabled, so
421 this driver is essential and you should enable it.
423 To compile this driver as a module, choose M here: the
424 module will be called retu_wdt.
427 tristate "MOXART watchdog"
428 depends on ARCH_MOXART
430 Say Y here to include Watchdog timer support for the watchdog
431 existing on the MOXA ART SoC series platforms.
433 To compile this driver as a module, choose M here: the
434 module will be called moxart_wdt.
436 config SIRFSOC_WATCHDOG
437 tristate "SiRFSOC watchdog"
442 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
443 the watchdog triggers the system will be reset.
445 config TEGRA_WATCHDOG
446 tristate "Tegra watchdog"
447 depends on ARCH_TEGRA || COMPILE_TEST
450 Say Y here to include support for the watchdog timer
451 embedded in NVIDIA Tegra SoCs.
453 To compile this driver as a module, choose M here: the
454 module will be called tegra_wdt.
458 config AT32AP700X_WDT
459 tristate "AT32AP700x watchdog"
460 depends on CPU_AT32AP700X
462 Watchdog timer embedded into AT32AP700x devices. This will reboot
463 your system when the timeout is reached.
465 # BLACKFIN Architecture
468 tristate "Blackfin On-Chip Watchdog Timer"
471 If you say yes here you will get support for the Blackfin On-Chip
472 Watchdog Timer. If you have one of these processors and wish to
473 have watchdog support enabled, say Y, otherwise say N.
475 To compile this driver as a module, choose M here: the
476 module will be called bfin_wdt.
482 # X86 (i386 + ia64 + x86_64) Architecture
485 tristate "Acquire SBC Watchdog Timer"
488 This is the driver for the hardware watchdog on Single Board
489 Computers produced by Acquire Inc (and others). This watchdog
490 simply watches your kernel to make sure it doesn't freeze, and if
491 it does, it reboots your computer after a certain amount of time.
493 To compile this driver as a module, choose M here: the
494 module will be called acquirewdt.
496 Most people will say N.
499 tristate "Advantech SBC Watchdog Timer"
502 If you are configuring a Linux kernel for the Advantech single-board
503 computer, say `Y' here to support its built-in watchdog timer
504 feature. More information can be found at
505 <http://www.advantech.com.tw/products/>
508 tristate "ALi M1535 PMU Watchdog Timer"
509 depends on X86 && PCI
511 This is the driver for the hardware watchdog on the ALi M1535 PMU.
513 To compile this driver as a module, choose M here: the
514 module will be called alim1535_wdt.
516 Most people will say N.
519 tristate "ALi M7101 PMU Computer Watchdog"
522 This is the driver for the hardware watchdog on the ALi M7101 PMU
523 as used in the x86 Cobalt servers and also found in some
524 SPARC Netra servers too.
526 To compile this driver as a module, choose M here: the
527 module will be called alim7101_wdt.
529 Most people will say N.
532 tristate "Fintek F71808E, F71862FG, F71869, F71882FG and F71889FG Watchdog"
535 This is the driver for the hardware watchdog on the Fintek
536 F71808E, F71862FG, F71869, F71882FG and F71889FG Super I/O controllers.
538 You can compile this driver directly into the kernel, or use
539 it as a module. The module will be called f71808e_wdt.
542 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
543 depends on X86 && PCI
545 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
546 (Total Cost of Ownership) timer is a watchdog timer that will reboot
547 the machine after its expiration. The expiration time can be
548 configured with the "heartbeat" parameter.
550 To compile this driver as a module, choose M here: the
551 module will be called sp5100_tco.
554 tristate "AMD Geode CS5535/CS5536 Watchdog"
555 depends on CS5535_MFGPT
557 This driver enables a watchdog capability built into the
558 CS5535/CS5536 companion chips for the AMD Geode GX and LX
559 processors. This watchdog watches your kernel to make sure
560 it doesn't freeze, and if it does, it reboots your computer after
561 a certain amount of time.
563 You can compile this driver directly into the kernel, or use
564 it as a module. The module will be called geodewdt.
567 tristate "AMD Elan SC520 processor Watchdog"
570 This is the driver for the hardware watchdog built in to the
571 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
572 This watchdog simply watches your kernel to make sure it doesn't
573 freeze, and if it does, it reboots your computer after a certain
576 You can compile this driver directly into the kernel, or use
577 it as a module. The module will be called sc520_wdt.
579 config SBC_FITPC2_WATCHDOG
580 tristate "Compulab SBC-FITPC2 watchdog"
583 This is the driver for the built-in watchdog timer on the fit-PC2,
584 fit-PC2i, CM-iAM single-board computers made by Compulab.
586 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
587 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
589 Entering BIOS setup temporary disables watchdog operation regardless to current state,
590 so system will not be restarted while user in BIOS setup.
592 Once watchdog was enabled the system will be restarted every
593 "Watchdog Timer Value" period, so to prevent it user can restart or
594 disable the watchdog.
596 To compile this driver as a module, choose M here: the
597 module will be called sbc_fitpc2_wdt.
599 Most people will say N.
602 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
605 Enable support for the watchdog timer on the Eurotech CPU-1220 and
606 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
607 information are at <http://www.eurotech.it/>.
610 tristate "IB700 SBC Watchdog Timer"
613 This is the driver for the hardware watchdog on the IB700 Single
614 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
615 simply watches your kernel to make sure it doesn't freeze, and if
616 it does, it reboots your computer after a certain amount of time.
618 This driver is like the WDT501 driver but for slightly different hardware.
620 To compile this driver as a module, choose M here: the
621 module will be called ib700wdt.
623 Most people will say N.
626 tristate "IBM Automatic Server Restart"
629 This is the driver for the IBM Automatic Server Restart watchdog
630 timer built-in into some eServer xSeries machines.
632 To compile this driver as a module, choose M here: the
633 module will be called ibmasr.
636 tristate "ICP Single Board Computer Watchdog Timer"
639 This is a driver for the hardware watchdog on the ICP Single
640 Board Computer. This driver is working on (at least) the following
641 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
643 To compile this driver as a module, choose M here: the
644 module will be called wafer5823wdt.
647 tristate "Intel 6300ESB Timer/Watchdog"
650 Hardware driver for the watchdog timer built into the Intel
651 6300ESB controller hub.
653 To compile this driver as a module, choose M here: the
654 module will be called i6300esb.
657 tristate "Intel Atom E6xx Watchdog"
658 depends on X86 && PCI
663 Hardware driver for the watchdog timer built into the Intel
664 Atom E6XX (TunnelCreek) processor.
666 To compile this driver as a module, choose M here: the
667 module will be called ie6xx_wdt.
669 config INTEL_SCU_WATCHDOG
670 bool "Intel SCU Watchdog for Mobile Platforms"
671 depends on X86_INTEL_MID
673 Hardware driver for the watchdog time built into the Intel SCU
674 for Intel Mobile Platforms.
676 To compile this driver as a module, choose M here.
678 config INTEL_MID_WATCHDOG
679 tristate "Intel MID Watchdog Timer"
680 depends on X86_INTEL_MID
683 Watchdog timer driver built into the Intel SCU for Intel MID
686 This driver currently supports only the watchdog evolution
687 implementation in SCU, available for Merrifield generation.
689 To compile this driver as a module, choose M here.
692 tristate "Intel TCO Timer/Watchdog"
693 depends on (X86 || IA64) && PCI
697 Hardware driver for the intel TCO timer based watchdog devices.
698 These drivers are included in the Intel 82801 I/O Controller
699 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
702 The TCO (Total Cost of Ownership) timer is a watchdog timer
703 that will reboot the machine after its second expiration. The
704 expiration time can be configured with the "heartbeat" parameter.
706 On some motherboards the driver may fail to reset the chipset's
707 NO_REBOOT flag which prevents the watchdog from rebooting the
708 machine. If this is the case you will get a kernel message like
709 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
711 To compile this driver as a module, choose M here: the
712 module will be called iTCO_wdt.
714 config ITCO_VENDOR_SUPPORT
715 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
718 Add vendor specific support to the intel TCO timer based watchdog
719 devices. At this moment we only have additional support for some
720 SuperMicro Inc. motherboards.
723 tristate "IT8712F (Smart Guardian) Watchdog Timer"
726 This is the driver for the built-in watchdog timer on the IT8712F
727 Super I/0 chipset used on many motherboards.
729 If the driver does not work, then make sure that the game port in
732 To compile this driver as a module, choose M here: the
733 module will be called it8712f_wdt.
736 tristate "IT87 Watchdog Timer"
739 This is the driver for the hardware watchdog on the ITE IT8702,
740 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726 and IT8728
743 If the driver does not work, then make sure that the game port in
746 This watchdog simply watches your kernel to make sure it doesn't
747 freeze, and if it does, it reboots your computer after a certain
750 To compile this driver as a module, choose M here: the module will
754 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
755 depends on X86 && PCI
757 A software monitoring watchdog and NMI sourcing driver. This driver
758 will detect lockups and provide a stack trace. This is a driver that
759 will only load on an HP ProLiant system with a minimum of iLO2 support.
760 To compile this driver as a module, choose M here: the module will be
764 tristate "Kontron COM Watchdog Timer"
765 depends on MFD_KEMPLD
768 Support for the PLD watchdog on some Kontron ETX and COMexpress
771 This driver can also be built as a module. If so, the module will be
774 config HPWDT_NMI_DECODING
775 bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
776 depends on HP_WATCHDOG
779 When an NMI occurs this feature will make the necessary BIOS calls to
780 log the cause of the NMI.
783 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
786 This is a driver for National Semiconductor PC87307/PC97307 hardware
787 watchdog cards as found on the SC1200. This watchdog is mainly used
788 for power management purposes and can be used to power down the device
789 during inactivity periods (includes interrupt activity monitoring).
791 To compile this driver as a module, choose M here: the
792 module will be called sc1200wdt.
794 Most people will say N.
797 tristate "National Semiconductor SCx200 Watchdog"
798 depends on SCx200 && PCI
800 Enable the built-in watchdog timer support on the National
801 Semiconductor SCx200 processors.
803 If compiled as a module, it will be called scx200_wdt.
806 tristate "NS PC87413 watchdog"
809 This is the driver for the hardware watchdog on the PC87413 chipset
810 This watchdog simply watches your kernel to make sure it doesn't
811 freeze, and if it does, it reboots your computer after a certain
814 To compile this driver as a module, choose M here: the
815 module will be called pc87413_wdt.
817 Most people will say N.
820 tristate "nVidia TCO Timer/Watchdog"
821 depends on X86 && PCI
823 Hardware driver for the TCO timer built into the nVidia Hub family
824 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
825 watchdog timer that will reboot the machine after its second
826 expiration. The expiration time can be configured with the
827 "heartbeat" parameter.
829 On some motherboards the driver may fail to reset the chipset's
830 NO_REBOOT flag which prevents the watchdog from rebooting the
831 machine. If this is the case you will get a kernel message like
832 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
834 To compile this driver as a module, choose M here: the
835 module will be called nv_tco.
838 tristate "RDC R-321x SoC watchdog"
839 depends on X86_RDC321X
841 This is the driver for the built in hardware watchdog
842 in the RDC R-321x SoC.
844 To compile this driver as a module, choose M here: the
845 module will be called rdc321x_wdt.
848 tristate "SBC-60XX Watchdog Timer"
851 This driver can be used with the watchdog timer found on some
852 single board computers, namely the 6010 PII based computer.
853 It may well work with other cards. It reads port 0x443 to enable
854 and re-set the watchdog timer, and reads port 0x45 to disable
855 the watchdog. If you have a card that behave in similar ways,
856 you can probably make this driver work with your card as well.
858 You can compile this driver directly into the kernel, or use
859 it as a module. The module will be called sbc60xxwdt.
862 tristate "SBC8360 Watchdog Timer"
866 This is the driver for the hardware watchdog on the SBC8360 Single
867 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
869 To compile this driver as a module, choose M here: the
870 module will be called sbc8360.
872 Most people will say N.
875 tristate "SBC Nano 7240 Watchdog Timer"
876 depends on X86_32 && !UML
878 This is the driver for the hardware watchdog found on the IEI
879 single board computers EPIC Nano 7240 (and likely others). This
880 watchdog simply watches your kernel to make sure it doesn't freeze,
881 and if it does, it reboots your computer after a certain amount of
884 To compile this driver as a module, choose M here: the
885 module will be called sbc7240_wdt.
888 tristate "SMA CPU5 Watchdog"
892 To compile this driver as a module, choose M here: the
893 module will be called cpu5wdt.
895 config SMSC_SCH311X_WDT
896 tristate "SMSC SCH311X Watchdog Timer"
899 This is the driver for the hardware watchdog timer on the
900 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
901 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
904 To compile this driver as a module, choose M here: the
905 module will be called sch311x_wdt.
907 config SMSC37B787_WDT
908 tristate "Winbond SMsC37B787 Watchdog Timer"
911 This is the driver for the hardware watchdog component on the
912 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
913 from Vision Systems and maybe others.
915 This watchdog simply watches your kernel to make sure it doesn't
916 freeze, and if it does, it reboots your computer after a certain
919 Usually a userspace daemon will notify the kernel WDT driver that
920 userspace is still alive, at regular intervals.
922 To compile this driver as a module, choose M here: the
923 module will be called smsc37b787_wdt.
925 Most people will say N.
928 tristate "VIA Watchdog Timer"
929 depends on X86 && PCI
932 This is the driver for the hardware watchdog timer on VIA
933 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
935 To compile this driver as a module, choose M here; the module
936 will be called via_wdt.
938 Most people will say N.
941 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
945 This is the driver for the hardware watchdog on the following
947 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
957 This watchdog simply watches your kernel to make sure it doesn't
958 freeze, and if it does, it reboots your computer after a certain
961 To compile this driver as a module, choose M here: the
962 module will be called w83627hf_wdt.
964 Most people will say N.
967 tristate "W83877F (EMACS) Watchdog Timer"
970 This is the driver for the hardware watchdog on the W83877F chipset
971 as used in EMACS PC-104 motherboards (and likely others). This
972 watchdog simply watches your kernel to make sure it doesn't freeze,
973 and if it does, it reboots your computer after a certain amount of
976 To compile this driver as a module, choose M here: the
977 module will be called w83877f_wdt.
979 Most people will say N.
982 tristate "W83977F (PCM-5335) Watchdog Timer"
985 This is the driver for the hardware watchdog on the W83977F I/O chip
986 as used in AAEON's PCM-5335 SBC (and likely others). This
987 watchdog simply watches your kernel to make sure it doesn't freeze,
988 and if it does, it reboots your computer after a certain amount of
991 To compile this driver as a module, choose M here: the
992 module will be called w83977f_wdt.
995 tristate "ZF MachZ Watchdog"
998 If you are using a ZF Micro MachZ processor, say Y here, otherwise
999 N. This is the driver for the watchdog timer built-in on that
1000 processor using ZF-Logic interface. This watchdog simply watches
1001 your kernel to make sure it doesn't freeze, and if it does, it
1002 reboots your computer after a certain amount of time.
1004 To compile this driver as a module, choose M here: the
1005 module will be called machzwd.
1007 config SBC_EPX_C3_WATCHDOG
1008 tristate "Winsystems SBC EPX-C3 watchdog"
1011 This is the driver for the built-in watchdog timer on the EPX-C3
1012 Single-board computer made by Winsystems, Inc.
1014 *Note*: This hardware watchdog is not probeable and thus there
1015 is no way to know if writing to its IO address will corrupt
1016 your system or have any real effect. The only way to be sure
1017 that this driver does what you want is to make sure you
1018 are running it on an EPX-C3 from Winsystems with the watchdog
1019 timer at IO address 0x1ee and 0x1ef. It will write to both those
1020 IO ports. Basically, the assumption is made that if you compile
1021 this driver into your kernel and/or load it as a module, that you
1022 know what you are doing and that you are in fact running on an
1025 To compile this driver as a module, choose M here: the
1026 module will be called sbc_epx_c3.
1032 config M54xx_WATCHDOG
1033 tristate "MCF54xx watchdog support"
1036 To compile this driver as a module, choose M here: the
1037 module will be called m54xx_wdt.
1039 # MicroBlaze Architecture
1044 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1047 Hardware driver for the built-in watchdog timer on the Atheros
1048 AR71XX/AR724X/AR913X SoCs.
1051 tristate "Broadcom BCM47xx Watchdog Timer"
1053 select WATCHDOG_CORE
1055 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1058 tristate "IDT RC32434 SoC Watchdog Timer"
1059 depends on MIKROTIK_RB532
1061 Hardware driver for the IDT RC32434 SoC built-in
1064 To compile this driver as a module, choose M here: the
1065 module will be called rc32434_wdt.
1068 tristate "Indy/I2 Hardware Watchdog"
1069 depends on SGI_HAS_INDYDOG
1071 Hardware driver for the Indy's/I2's watchdog. This is a
1072 watchdog timer that will reboot the machine after a 60 second
1073 timer expired and no process has written to /dev/watchdog during
1077 tristate "Ingenic jz4740 SoC hardware watchdog"
1078 depends on MACH_JZ4740
1079 select WATCHDOG_CORE
1081 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1084 tristate "MTX-1 Hardware Watchdog"
1085 depends on MIPS_MTX1
1087 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1088 will reboot the machine after a 100 seconds timer expired.
1091 tristate "PNX833x Hardware Watchdog"
1092 depends on SOC_PNX8335
1094 Hardware driver for the PNX833x's watchdog. This is a
1095 watchdog timer that will reboot the machine after a programmable
1096 timer has expired and no process has written to /dev/watchdog during
1100 tristate "Sibyte SoC hardware watchdog"
1103 Watchdog driver for the built in watchdog hardware in Sibyte
1104 SoC processors. There are apparently two watchdog timers
1105 on such processors; this driver supports only the first one,
1106 because currently Linux only supports exporting one watchdog
1109 To compile this driver as a loadable module, choose M here.
1110 The module will be called sb_wdog.
1113 tristate "TI AR7 Watchdog Timer"
1116 Hardware driver for the TI AR7 Watchdog Timer.
1119 tristate "Toshiba TXx9 Watchdog Timer"
1120 depends on CPU_TX39XX || CPU_TX49XX
1121 select WATCHDOG_CORE
1123 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1126 tristate "Cavium OCTEON SOC family Watchdog Timer"
1127 depends on CAVIUM_OCTEON_SOC
1129 select EXPORT_UASM if OCTEON_WDT = m
1131 Hardware driver for OCTEON's on chip watchdog timer.
1132 Enables the watchdog for all cores running Linux. It
1133 installs a NMI handler and pokes the watchdog based on an
1134 interrupt. On first expiration of the watchdog, the
1135 interrupt handler pokes it. The second expiration causes an
1136 NMI that prints a message. The third expiration causes a
1139 When userspace has /dev/watchdog open, no poking is done
1140 from the first interrupt, it is then only poked when the
1144 tristate "Broadcom BCM63xx hardware watchdog"
1147 Watchdog driver for the built in watchdog hardware in Broadcom
1150 To compile this driver as a loadable module, choose M here.
1151 The module will be called bcm63xx_wdt.
1154 tristate "Broadcom BCM2835 hardware watchdog"
1155 depends on ARCH_BCM2835
1156 select WATCHDOG_CORE
1158 Watchdog driver for the built in watchdog hardware in Broadcom
1161 To compile this driver as a loadable module, choose M here.
1162 The module will be called bcm2835_wdt.
1165 tristate "BCM Kona Watchdog"
1166 depends on ARCH_BCM_MOBILE
1167 select WATCHDOG_CORE
1169 Support for the watchdog timer on the following Broadcom BCM281xx
1170 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1173 Say 'Y' or 'M' here to enable the driver. The module will be called
1176 config BCM_KONA_WDT_DEBUG
1177 bool "DEBUGFS support for BCM Kona Watchdog"
1178 depends on BCM_KONA_WDT
1180 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1181 access to the driver's internal data structures as well as watchdog
1182 timer hardware registres.
1184 If in doubt, say 'N'.
1187 tristate "Lantiq SoC watchdog"
1190 Hardware driver for the Lantiq SoC Watchdog Timer.
1193 tristate "Ralink SoC watchdog"
1194 select WATCHDOG_CORE
1197 Hardware driver for the Ralink SoC Watchdog Timer.
1199 # PARISC Architecture
1201 # POWERPC Architecture
1204 tristate "GE Watchdog Timer"
1207 Watchdog timer found in a number of GE single board computers.
1210 bool "MPC52xx Watchdog Timer"
1211 depends on PPC_MPC52xx
1213 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1216 tristate "MPC8xxx Platform Watchdog Timer"
1217 depends on PPC_8xx || PPC_83xx || PPC_86xx
1218 select WATCHDOG_CORE
1220 This driver is for a SoC level watchdog that exists on some
1221 Freescale PowerPC processors. So far this driver supports:
1226 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1229 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1233 tristate "PIKA FPGA Watchdog"
1237 This enables the watchdog in the PIKA FPGA. Currently used on
1241 tristate "PowerPC Book-E Watchdog Timer"
1242 depends on BOOKE || 4xx
1243 select WATCHDOG_CORE
1245 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1246 MPC85xx SOCs and the IBM PowerPC 440.
1248 Please see Documentation/watchdog/watchdog-api.txt for
1251 config BOOKE_WDT_DEFAULT_TIMEOUT
1252 int "PowerPC Book-E Watchdog Timer Default Timeout"
1253 depends on BOOKE_WDT
1254 default 38 if PPC_FSL_BOOK3E
1255 range 0 63 if PPC_FSL_BOOK3E
1256 default 3 if !PPC_FSL_BOOK3E
1257 range 0 3 if !PPC_FSL_BOOK3E
1259 Select the default watchdog timer period to be used by the PowerPC
1260 Book-E watchdog driver. A watchdog "event" occurs when the bit
1261 position represented by this number transitions from zero to one.
1263 For Freescale Book-E processors, this is a number between 0 and 63.
1264 For other Book-E processors, this is a number between 0 and 3.
1266 The value can be overridden by the wdt_period command-line parameter.
1269 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1270 select WATCHDOG_CORE
1273 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1275 The driver can also be built as a module. If so, the module will be
1278 If unsure select N here.
1280 # PPC64 Architecture
1282 config WATCHDOG_RTAS
1283 tristate "RTAS watchdog"
1286 This driver adds watchdog support for the RTAS watchdog.
1288 To compile this driver as a module, choose M here. The module
1289 will be called wdrtas.
1293 config DIAG288_WATCHDOG
1294 tristate "System z diag288 Watchdog"
1296 select WATCHDOG_CORE
1298 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1299 provide a virtual watchdog timer to their guest that cause a
1300 user define Control Program command to be executed after a
1302 LPAR provides a very similar interface. This driver handles
1305 To compile this driver as a module, choose M here. The module
1306 will be called diag288_wdt.
1308 # SUPERH (sh + sh64) Architecture
1311 tristate "SuperH Watchdog"
1312 depends on SUPERH && (CPU_SH3 || CPU_SH4)
1313 select WATCHDOG_CORE
1315 This driver adds watchdog support for the integrated watchdog in the
1316 SuperH processors. If you have one of these processors and wish
1317 to have watchdog support enabled, say Y, otherwise say N.
1319 As a side note, saying Y here will automatically boost HZ to 1000
1320 so that the timer has a chance to clear the overflow counter. On
1321 slower systems (such as the SH-2 and SH-3) this will likely yield
1322 some performance issues. As such, the WDT should be avoided here
1323 unless it is absolutely necessary.
1325 To compile this driver as a module, choose M here: the
1326 module will be called shwdt.
1328 # SPARC Architecture
1330 # SPARC64 Architecture
1332 config WATCHDOG_CP1XXX
1333 tristate "CP1XXX Hardware Watchdog support"
1334 depends on SPARC64 && PCI
1336 This is the driver for the hardware watchdog timers present on
1337 Sun Microsystems CompactPCI models CP1400 and CP1500.
1339 To compile this driver as a module, choose M here: the
1340 module will be called cpwatchdog.
1342 If you do not have a CompactPCI model CP1400 or CP1500, or
1343 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1344 you should say N to this option.
1347 tristate "RIO Hardware Watchdog support"
1348 depends on SPARC64 && PCI
1350 Say Y here to support the hardware watchdog capability on Sun RIO
1351 machines. The watchdog timeout period is normally one minute but
1352 can be changed with a boot-time parameter.
1354 # XTENSA Architecture
1359 tristate "Xen Watchdog support"
1362 Say Y here to support the hypervisor watchdog capability provided
1363 by Xen 4.0 and newer. The watchdog timeout period is normally one
1364 minute but can be changed with a boot-time parameter.
1367 tristate "UML watchdog"
1371 # ISA-based Watchdog Cards
1374 comment "ISA-based Watchdog Cards"
1378 tristate "Berkshire Products ISA-PC Watchdog"
1381 This is the driver for the Berkshire Products ISA-PC Watchdog card.
1382 This card simply watches your kernel to make sure it doesn't freeze,
1383 and if it does, it reboots your computer after a certain amount of
1384 time. This driver is like the WDT501 driver but for different
1385 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
1386 watchdog cards can be ordered from <http://www.berkprod.com/>.
1388 To compile this driver as a module, choose M here: the
1389 module will be called pcwd.
1391 Most people will say N.
1394 tristate "Mixcom Watchdog"
1397 This is a driver for the Mixcom hardware watchdog cards. This
1398 watchdog simply watches your kernel to make sure it doesn't freeze,
1399 and if it does, it reboots your computer after a certain amount of
1402 To compile this driver as a module, choose M here: the
1403 module will be called mixcomwd.
1405 Most people will say N.
1408 tristate "WDT Watchdog timer"
1411 If you have a WDT500P or WDT501P watchdog board, say Y here,
1412 otherwise N. It is not possible to probe for this board, which means
1413 that you have to inform the kernel about the IO port and IRQ that
1414 is needed (you can do this via the io and irq parameters)
1416 To compile this driver as a module, choose M here: the
1417 module will be called wdt.
1420 # PCI-based Watchdog Cards
1423 comment "PCI-based Watchdog Cards"
1426 config PCIPCWATCHDOG
1427 tristate "Berkshire Products PCI-PC Watchdog"
1430 This is the driver for the Berkshire Products PCI-PC Watchdog card.
1431 This card simply watches your kernel to make sure it doesn't freeze,
1432 and if it does, it reboots your computer after a certain amount of
1433 time. The card can also monitor the internal temperature of the PC.
1434 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
1436 To compile this driver as a module, choose M here: the
1437 module will be called pcwd_pci.
1439 Most people will say N.
1442 tristate "PCI-WDT500/501 Watchdog timer"
1445 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
1447 If you have a PCI-WDT501 watchdog board then you can enable the
1448 temperature sensor by setting the type parameter to 501.
1450 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
1451 can do this via the tachometer parameter. Only do this if you have a
1452 fan tachometer actually set up.
1454 To compile this driver as a module, choose M here: the
1455 module will be called wdt_pci.
1458 # USB-based Watchdog Cards
1461 comment "USB-based Watchdog Cards"
1464 config USBPCWATCHDOG
1465 tristate "Berkshire Products USB-PC Watchdog"
1468 This is the driver for the Berkshire Products USB-PC Watchdog card.
1469 This card simply watches your kernel to make sure it doesn't freeze,
1470 and if it does, it reboots your computer after a certain amount of
1471 time. The card can also monitor the internal temperature of the PC.
1472 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
1474 To compile this driver as a module, choose M here: the
1475 module will be called pcwd_usb.
1477 Most people will say N.