1 2# 3# Watchdog device configuration 4# 5 6menuconfig WATCHDOG 7 bool "Watchdog Timer Support" 8 ---help--- 9 If you say Y here (and to one of the following options) and create a 10 character special file /dev/watchdog with major number 10 and minor 11 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.: 12 subsequently opening the file and then failing to write to it for 13 longer than 1 minute will result in rebooting the machine. This 14 could be useful for a networked machine that needs to come back 15 on-line as fast as possible after a lock-up. There's both a watchdog 16 implementation entirely in software (which can sometimes fail to 17 reboot the machine) and a driver for hardware watchdog boards, which 18 are more robust and can also keep track of the temperature inside 19 your computer. For details, read 20 <file:Documentation/watchdog/watchdog-api.txt> in the kernel source. 21 22 The watchdog is usually used together with the watchdog daemon 23 which is available from 24 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can 25 also monitor NFS connections and can reboot the machine when the process 26 table is full. 27 28 If unsure, say N. 29 30if WATCHDOG 31 32config WATCHDOG_CORE 33 bool "WatchDog Timer Driver Core" 34 ---help--- 35 Say Y here if you want to use the new watchdog timer driver core. 36 This driver provides a framework for all watchdog timer drivers 37 and gives them the /dev/watchdog interface (and later also the 38 sysfs interface). 39 40config WATCHDOG_NOWAYOUT 41 bool "Disable watchdog shutdown on close" 42 help 43 The default watchdog behaviour (which you get if you say N here) is 44 to stop the timer if the process managing it closes the file 45 /dev/watchdog. It's always remotely possible that this process might 46 get killed. If you say Y here, the watchdog cannot be stopped once 47 it has been started. 48 49config WATCHDOG_HANDLE_BOOT_ENABLED 50 bool "Update boot-enabled watchdog until userspace takes over" 51 default y 52 help 53 The default watchdog behaviour (which you get if you say Y here) is 54 to ping watchdog devices that were enabled before the driver has 55 been loaded until control is taken over from userspace using the 56 /dev/watchdog file. If you say N here, the kernel will not update 57 the watchdog on its own. Thus if your userspace does not start fast 58 enough your device will reboot. 59 60config WATCHDOG_SYSFS 61 bool "Read different watchdog information through sysfs" 62 help 63 Say Y here if you want to enable watchdog device status read through 64 sysfs attributes. 65 66# 67# General Watchdog drivers 68# 69 70comment "Watchdog Device Drivers" 71 72# Architecture Independent 73 74config SOFT_WATCHDOG 75 tristate "Software watchdog" 76 select WATCHDOG_CORE 77 help 78 A software monitoring watchdog. This will fail to reboot your system 79 from some situations that the hardware watchdog will recover 80 from. Equally it's a lot cheaper to install. 81 82 To compile this driver as a module, choose M here: the 83 module will be called softdog. 84 85config SOFT_WATCHDOG_PRETIMEOUT 86 bool "Software watchdog pretimeout governor support" 87 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV 88 help 89 Enable this if you want to use pretimeout governors with the software 90 watchdog. Be aware that governors might affect the watchdog because it 91 is purely software, e.g. the panic governor will stall it! 92 93config DA9052_WATCHDOG 94 tristate "Dialog DA9052 Watchdog" 95 depends on PMIC_DA9052 || COMPILE_TEST 96 select WATCHDOG_CORE 97 help 98 Support for the watchdog in the DA9052 PMIC. Watchdog trigger 99 cause system reset. 100 101 Say Y here to include support for the DA9052 watchdog. 102 Alternatively say M to compile the driver as a module, 103 which will be called da9052_wdt. 104 105config DA9055_WATCHDOG 106 tristate "Dialog Semiconductor DA9055 Watchdog" 107 depends on MFD_DA9055 || COMPILE_TEST 108 select WATCHDOG_CORE 109 help 110 If you say yes here you get support for watchdog on the Dialog 111 Semiconductor DA9055 PMIC. 112 113 This driver can also be built as a module. If so, the module 114 will be called da9055_wdt. 115 116config DA9063_WATCHDOG 117 tristate "Dialog DA9063 Watchdog" 118 depends on MFD_DA9063 || COMPILE_TEST 119 select WATCHDOG_CORE 120 help 121 Support for the watchdog in the DA9063 PMIC. 122 123 This driver can be built as a module. The module name is da9063_wdt. 124 125config DA9062_WATCHDOG 126 tristate "Dialog DA9062/61 Watchdog" 127 depends on MFD_DA9062 || COMPILE_TEST 128 select WATCHDOG_CORE 129 help 130 Support for the watchdog in the DA9062 and DA9061 PMICs. 131 132 This driver can be built as a module. The module name is da9062_wdt. 133 134config GPIO_WATCHDOG 135 tristate "Watchdog device controlled through GPIO-line" 136 depends on OF_GPIO 137 select WATCHDOG_CORE 138 help 139 If you say yes here you get support for watchdog device 140 controlled through GPIO-line. 141 142config GPIO_WATCHDOG_ARCH_INITCALL 143 bool "Register the watchdog as early as possible" 144 depends on GPIO_WATCHDOG=y 145 help 146 In some situations, the default initcall level (module_init) 147 in not early enough in the boot process to avoid the watchdog 148 to be triggered. 149 If you say yes here, the initcall level would be raised to 150 arch_initcall. 151 If in doubt, say N. 152 153config MENF21BMC_WATCHDOG 154 tristate "MEN 14F021P00 BMC Watchdog" 155 depends on MFD_MENF21BMC || COMPILE_TEST 156 depends on I2C 157 select WATCHDOG_CORE 158 help 159 Say Y here to include support for the MEN 14F021P00 BMC Watchdog. 160 161 This driver can also be built as a module. If so the module 162 will be called menf21bmc_wdt. 163 164config TANGOX_WATCHDOG 165 tristate "Sigma Designs SMP86xx/SMP87xx watchdog" 166 select WATCHDOG_CORE 167 depends on ARCH_TANGO || COMPILE_TEST 168 depends on HAS_IOMEM 169 help 170 Support for the watchdog in Sigma Designs SMP86xx (tango3) 171 and SMP87xx (tango4) family chips. 172 173 This driver can be built as a module. The module name is tangox_wdt. 174 175config WDAT_WDT 176 tristate "ACPI Watchdog Action Table (WDAT)" 177 depends on ACPI 178 select WATCHDOG_CORE 179 select ACPI_WATCHDOG 180 help 181 This driver adds support for systems with ACPI Watchdog Action 182 Table (WDAT) table. Servers typically have this but it can be 183 found on some desktop machines as well. This driver will take 184 over the native iTCO watchdog driver found on many Intel CPUs. 185 186 To compile this driver as module, choose M here: the module will 187 be called wdat_wdt. 188 189config WM831X_WATCHDOG 190 tristate "WM831x watchdog" 191 depends on MFD_WM831X 192 select WATCHDOG_CORE 193 help 194 Support for the watchdog in the WM831x AudioPlus PMICs. When 195 the watchdog triggers the system will be reset. 196 197config WM8350_WATCHDOG 198 tristate "WM8350 watchdog" 199 depends on MFD_WM8350 200 select WATCHDOG_CORE 201 help 202 Support for the watchdog in the WM8350 AudioPlus PMIC. When 203 the watchdog triggers the system will be reset. 204 205config XILINX_WATCHDOG 206 tristate "Xilinx Watchdog timer" 207 depends on HAS_IOMEM 208 select WATCHDOG_CORE 209 help 210 Watchdog driver for the xps_timebase_wdt ip core. 211 212 To compile this driver as a module, choose M here: the 213 module will be called of_xilinx_wdt. 214 215config ZIIRAVE_WATCHDOG 216 tristate "Zodiac RAVE Watchdog Timer" 217 depends on I2C 218 select WATCHDOG_CORE 219 help 220 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog 221 Processor. 222 223 To compile this driver as a module, choose M here: the 224 module will be called ziirave_wdt. 225 226# ALPHA Architecture 227 228# ARM Architecture 229 230config ARM_SP805_WATCHDOG 231 tristate "ARM SP805 Watchdog" 232 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA 233 select WATCHDOG_CORE 234 help 235 ARM Primecell SP805 Watchdog timer. This will reboot your system when 236 the timeout is reached. 237 238config ARM_SBSA_WATCHDOG 239 tristate "ARM SBSA Generic Watchdog" 240 depends on ARM64 241 depends on ARM_ARCH_TIMER 242 select WATCHDOG_CORE 243 help 244 ARM SBSA Generic Watchdog has two stage timeouts: 245 the first signal (WS0) is for alerting the system by interrupt, 246 the second one (WS1) is a real hardware reset. 247 More details: ARM DEN0029B - Server Base System Architecture (SBSA) 248 249 This driver can operate ARM SBSA Generic Watchdog as a single stage 250 or a two stages watchdog, it depends on the module parameter "action". 251 252 Note: the maximum timeout in the two stages mode is half of that in 253 the single stage mode. 254 255 To compile this driver as module, choose M here: The module 256 will be called sbsa_gwdt. 257 258config ASM9260_WATCHDOG 259 tristate "Alphascale ASM9260 watchdog" 260 depends on MACH_ASM9260 || COMPILE_TEST 261 depends on OF 262 select WATCHDOG_CORE 263 select RESET_CONTROLLER 264 help 265 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your 266 system when the timeout is reached. 267 268config AT91RM9200_WATCHDOG 269 tristate "AT91RM9200 watchdog" 270 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST 271 help 272 Watchdog timer embedded into AT91RM9200 chips. This will reboot your 273 system when the timeout is reached. 274 275config AT91SAM9X_WATCHDOG 276 tristate "AT91SAM9X / AT91CAP9 watchdog" 277 depends on ARCH_AT91 || COMPILE_TEST 278 select WATCHDOG_CORE 279 help 280 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will 281 reboot your system when the timeout is reached. 282 283config SAMA5D4_WATCHDOG 284 tristate "Atmel SAMA5D4 Watchdog Timer" 285 depends on ARCH_AT91 || COMPILE_TEST 286 select WATCHDOG_CORE 287 help 288 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips. 289 Its Watchdog Timer Mode Register can be written more than once. 290 This will reboot your system when the timeout is reached. 291 292config CADENCE_WATCHDOG 293 tristate "Cadence Watchdog Timer" 294 depends on HAS_IOMEM 295 select WATCHDOG_CORE 296 help 297 Say Y here if you want to include support for the watchdog 298 timer in the Xilinx Zynq. 299 300config 21285_WATCHDOG 301 tristate "DC21285 watchdog" 302 depends on FOOTBRIDGE 303 help 304 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y 305 here if you wish to use this. Alternatively say M to compile the 306 driver as a module, which will be called wdt285. 307 308 This driver does not work on all machines. In particular, early CATS 309 boards have hardware problems that will cause the machine to simply 310 lock up if the watchdog fires. 311 312 "If in doubt, leave it out" - say N. 313 314config 977_WATCHDOG 315 tristate "NetWinder WB83C977 watchdog" 316 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST) 317 help 318 Say Y here to include support for the WB977 watchdog included in 319 NetWinder machines. Alternatively say M to compile the driver as 320 a module, which will be called wdt977. 321 322 Not sure? It's safe to say N. 323 324config GEMINI_WATCHDOG 325 tristate "Gemini watchdog" 326 depends on ARCH_GEMINI 327 select WATCHDOG_CORE 328 help 329 Say Y here if to include support for the watchdog timer 330 embedded in the Cortina Systems Gemini family of devices. 331 332 To compile this driver as a module, choose M here: the 333 module will be called gemini_wdt. 334 335config IXP4XX_WATCHDOG 336 tristate "IXP4xx Watchdog" 337 depends on ARCH_IXP4XX 338 help 339 Say Y here if to include support for the watchdog timer 340 in the Intel IXP4xx network processors. This driver can 341 be built as a module by choosing M. The module will 342 be called ixp4xx_wdt. 343 344 Note: The internal IXP4xx watchdog does a soft CPU reset 345 which doesn't reset any peripherals. There are circumstances 346 where the watchdog will fail to reset the board correctly 347 (e.g., if the boot ROM is in an unreadable state). 348 349 Say N if you are unsure. 350 351config KS8695_WATCHDOG 352 tristate "KS8695 watchdog" 353 depends on ARCH_KS8695 354 help 355 Watchdog timer embedded into KS8695 processor. This will reboot your 356 system when the timeout is reached. 357 358config HAVE_S3C2410_WATCHDOG 359 bool 360 help 361 This will include watchdog timer support for Samsung SoCs. If 362 you want to include watchdog support for any machine, kindly 363 select this in the respective mach-XXXX/Kconfig file. 364 365config S3C2410_WATCHDOG 366 tristate "S3C2410 Watchdog" 367 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST 368 select WATCHDOG_CORE 369 select MFD_SYSCON if ARCH_EXYNOS 370 help 371 Watchdog timer block in the Samsung SoCs. This will reboot 372 the system when the timer expires with the watchdog enabled. 373 374 The driver is limited by the speed of the system's PCLK 375 signal, so with reasonably fast systems (PCLK around 50-66MHz) 376 then watchdog intervals of over approximately 20seconds are 377 unavailable. 378 379 The driver can be built as a module by choosing M, and will 380 be called s3c2410_wdt 381 382config SA1100_WATCHDOG 383 tristate "SA1100/PXA2xx watchdog" 384 depends on ARCH_SA1100 || ARCH_PXA 385 help 386 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will 387 reboot your system when timeout is reached. 388 389 NOTE: once enabled, this timer cannot be disabled. 390 391 To compile this driver as a module, choose M here: the 392 module will be called sa1100_wdt. 393 394config DW_WATCHDOG 395 tristate "Synopsys DesignWare watchdog" 396 depends on HAS_IOMEM 397 select WATCHDOG_CORE 398 help 399 Say Y here if to include support for the Synopsys DesignWare 400 watchdog timer found in many chips. 401 To compile this driver as a module, choose M here: the 402 module will be called dw_wdt. 403 404config EP93XX_WATCHDOG 405 tristate "EP93xx Watchdog" 406 depends on ARCH_EP93XX || COMPILE_TEST 407 select WATCHDOG_CORE 408 help 409 Say Y here if to include support for the watchdog timer 410 embedded in the Cirrus Logic EP93xx family of devices. 411 412 To compile this driver as a module, choose M here: the 413 module will be called ep93xx_wdt. 414 415config OMAP_WATCHDOG 416 tristate "OMAP Watchdog" 417 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST 418 select WATCHDOG_CORE 419 help 420 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y' 421 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer. 422 423config PNX4008_WATCHDOG 424 tristate "LPC32XX Watchdog" 425 depends on ARCH_LPC32XX 426 select WATCHDOG_CORE 427 help 428 Say Y here if to include support for the watchdog timer 429 in the LPC32XX processor. 430 This driver can be built as a module by choosing M. The module 431 will be called pnx4008_wdt. 432 433 Say N if you are unsure. 434 435config IOP_WATCHDOG 436 tristate "IOP Watchdog" 437 depends on ARCH_IOP13XX 438 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X) 439 help 440 Say Y here if to include support for the watchdog timer 441 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can 442 be built as a module by choosing M. The module will 443 be called iop_wdt. 444 445 Note: The IOP13XX watchdog does an Internal Bus Reset which will 446 affect both cores and the peripherals of the IOP. The ATU-X 447 and/or ATUe configuration registers will remain intact, but if 448 operating as an Root Complex and/or Central Resource, the PCI-X 449 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER. 450 451config DAVINCI_WATCHDOG 452 tristate "DaVinci watchdog" 453 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST 454 select WATCHDOG_CORE 455 help 456 Say Y here if to include support for the watchdog timer 457 in the DaVinci DM644x/DM646x or Keystone processors. 458 To compile this driver as a module, choose M here: the 459 module will be called davinci_wdt. 460 461 NOTE: once enabled, this timer cannot be disabled. 462 Say N if you are unsure. 463 464config ORION_WATCHDOG 465 tristate "Orion watchdog" 466 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110) 467 depends on ARM 468 select WATCHDOG_CORE 469 help 470 Say Y here if to include support for the watchdog timer 471 in the Marvell Orion5x and Kirkwood ARM SoCs. 472 To compile this driver as a module, choose M here: the 473 module will be called orion_wdt. 474 475config RN5T618_WATCHDOG 476 tristate "Ricoh RN5T618 watchdog" 477 depends on MFD_RN5T618 || COMPILE_TEST 478 select WATCHDOG_CORE 479 help 480 If you say yes here you get support for watchdog on the Ricoh 481 RN5T618 PMIC. 482 483 This driver can also be built as a module. If so, the module 484 will be called rn5t618_wdt. 485 486config SUNXI_WATCHDOG 487 tristate "Allwinner SoCs watchdog support" 488 depends on ARCH_SUNXI || COMPILE_TEST 489 select WATCHDOG_CORE 490 help 491 Say Y here to include support for the watchdog timer 492 in Allwinner SoCs. 493 To compile this driver as a module, choose M here: the 494 module will be called sunxi_wdt. 495 496config COH901327_WATCHDOG 497 bool "ST-Ericsson COH 901 327 watchdog" 498 depends on ARCH_U300 || (ARM && COMPILE_TEST) 499 default y if MACH_U300 500 select WATCHDOG_CORE 501 help 502 Say Y here to include Watchdog timer support for the 503 watchdog embedded into the ST-Ericsson U300 series platforms. 504 This watchdog is used to reset the system and thus cannot be 505 compiled as a module. 506 507config TWL4030_WATCHDOG 508 tristate "TWL4030 Watchdog" 509 depends on TWL4030_CORE 510 select WATCHDOG_CORE 511 help 512 Support for TI TWL4030 watchdog. Say 'Y' here to enable the 513 watchdog timer support for TWL4030 chips. 514 515config STMP3XXX_RTC_WATCHDOG 516 tristate "Freescale STMP3XXX & i.MX23/28 watchdog" 517 depends on RTC_DRV_STMP || COMPILE_TEST 518 select WATCHDOG_CORE 519 help 520 Say Y here to include support for the watchdog timer inside 521 the RTC for the STMP37XX/378X or i.MX23/28 SoC. 522 To compile this driver as a module, choose M here: the 523 module will be called stmp3xxx_rtc_wdt. 524 525config NUC900_WATCHDOG 526 tristate "Nuvoton NUC900 watchdog" 527 depends on ARCH_W90X900 || COMPILE_TEST 528 help 529 Say Y here if to include support for the watchdog timer 530 for the Nuvoton NUC900 series SoCs. 531 To compile this driver as a module, choose M here: the 532 module will be called nuc900_wdt. 533 534config TS4800_WATCHDOG 535 tristate "TS-4800 Watchdog" 536 depends on HAS_IOMEM && OF 537 depends on SOC_IMX51 || COMPILE_TEST 538 select WATCHDOG_CORE 539 select MFD_SYSCON 540 help 541 Technologic Systems TS-4800 has watchdog timer implemented in 542 an external FPGA. Say Y here if you want to support for the 543 watchdog timer on TS-4800 board. 544 545config TS72XX_WATCHDOG 546 tristate "TS-72XX SBC Watchdog" 547 depends on MACH_TS72XX || COMPILE_TEST 548 help 549 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have 550 watchdog timer implemented in a external CPLD chip. Say Y here 551 if you want to support for the watchdog timer on TS-72XX boards. 552 553 To compile this driver as a module, choose M here: the 554 module will be called ts72xx_wdt. 555 556config MAX63XX_WATCHDOG 557 tristate "Max63xx watchdog" 558 depends on HAS_IOMEM 559 select WATCHDOG_CORE 560 help 561 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer. 562 563config MAX77620_WATCHDOG 564 tristate "Maxim Max77620 Watchdog Timer" 565 depends on MFD_MAX77620 || COMPILE_TEST 566 help 567 This is the driver for the Max77620 watchdog timer. 568 Say 'Y' here to enable the watchdog timer support for 569 MAX77620 chips. To compile this driver as a module, 570 choose M here: the module will be called max77620_wdt. 571 572config IMX2_WDT 573 tristate "IMX2+ Watchdog" 574 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST 575 select REGMAP_MMIO 576 select WATCHDOG_CORE 577 help 578 This is the driver for the hardware watchdog 579 on the Freescale IMX2 and later processors. 580 If you have one of these processors and wish to have 581 watchdog support enabled, say Y, otherwise say N. 582 583 To compile this driver as a module, choose M here: the 584 module will be called imx2_wdt. 585 586config UX500_WATCHDOG 587 tristate "ST-Ericsson Ux500 watchdog" 588 depends on MFD_DB8500_PRCMU 589 select WATCHDOG_CORE 590 default y 591 help 592 Say Y here to include Watchdog timer support for the watchdog 593 existing in the prcmu of ST-Ericsson Ux500 series platforms. 594 595 To compile this driver as a module, choose M here: the 596 module will be called ux500_wdt. 597 598config RETU_WATCHDOG 599 tristate "Retu watchdog" 600 depends on MFD_RETU 601 select WATCHDOG_CORE 602 help 603 Retu watchdog driver for Nokia Internet Tablets (770, N800, 604 N810). At least on N800 the watchdog cannot be disabled, so 605 this driver is essential and you should enable it. 606 607 To compile this driver as a module, choose M here: the 608 module will be called retu_wdt. 609 610config MOXART_WDT 611 tristate "MOXART watchdog" 612 depends on ARCH_MOXART || COMPILE_TEST 613 help 614 Say Y here to include Watchdog timer support for the watchdog 615 existing on the MOXA ART SoC series platforms. 616 617 To compile this driver as a module, choose M here: the 618 module will be called moxart_wdt. 619 620config SIRFSOC_WATCHDOG 621 tristate "SiRFSOC watchdog" 622 depends on ARCH_SIRF || COMPILE_TEST 623 select WATCHDOG_CORE 624 default y 625 help 626 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When 627 the watchdog triggers the system will be reset. 628 629config ST_LPC_WATCHDOG 630 tristate "STMicroelectronics LPC Watchdog" 631 depends on ARCH_STI || COMPILE_TEST 632 depends on OF 633 select WATCHDOG_CORE 634 help 635 Say Y here to include STMicroelectronics Low Power Controller 636 (LPC) based Watchdog timer support. 637 638 To compile this driver as a module, choose M here: the 639 module will be called st_lpc_wdt. 640 641config TEGRA_WATCHDOG 642 tristate "Tegra watchdog" 643 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM 644 select WATCHDOG_CORE 645 help 646 Say Y here to include support for the watchdog timer 647 embedded in NVIDIA Tegra SoCs. 648 649 To compile this driver as a module, choose M here: the 650 module will be called tegra_wdt. 651 652config QCOM_WDT 653 tristate "QCOM watchdog" 654 depends on HAS_IOMEM 655 depends on ARCH_QCOM || COMPILE_TEST 656 select WATCHDOG_CORE 657 help 658 Say Y here to include Watchdog timer support for the watchdog found 659 on QCOM chipsets. Currently supported targets are the MSM8960, 660 APQ8064, and IPQ8064. 661 662 To compile this driver as a module, choose M here: the 663 module will be called qcom_wdt. 664 665config MESON_GXBB_WATCHDOG 666 tristate "Amlogic Meson GXBB SoCs watchdog support" 667 depends on ARCH_MESON || COMPILE_TEST 668 select WATCHDOG_CORE 669 help 670 Say Y here to include support for the watchdog timer 671 in Amlogic Meson GXBB SoCs. 672 To compile this driver as a module, choose M here: the 673 module will be called meson_gxbb_wdt. 674 675config MESON_WATCHDOG 676 tristate "Amlogic Meson SoCs watchdog support" 677 depends on ARCH_MESON || COMPILE_TEST 678 select WATCHDOG_CORE 679 help 680 Say Y here to include support for the watchdog timer 681 in Amlogic Meson SoCs. 682 To compile this driver as a module, choose M here: the 683 module will be called meson_wdt. 684 685config MEDIATEK_WATCHDOG 686 tristate "Mediatek SoCs watchdog support" 687 depends on ARCH_MEDIATEK || COMPILE_TEST 688 select WATCHDOG_CORE 689 help 690 Say Y here to include support for the watchdog timer 691 in Mediatek SoCs. 692 To compile this driver as a module, choose M here: the 693 module will be called mtk_wdt. 694 695config DIGICOLOR_WATCHDOG 696 tristate "Conexant Digicolor SoCs watchdog support" 697 depends on ARCH_DIGICOLOR || COMPILE_TEST 698 select WATCHDOG_CORE 699 help 700 Say Y here to include support for the watchdog timer 701 in Conexant Digicolor SoCs. 702 To compile this driver as a module, choose M here: the 703 module will be called digicolor_wdt. 704 705config LPC18XX_WATCHDOG 706 tristate "LPC18xx/43xx Watchdog" 707 depends on ARCH_LPC18XX || COMPILE_TEST 708 depends on HAS_IOMEM 709 select WATCHDOG_CORE 710 help 711 Say Y here if to include support for the watchdog timer 712 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx 713 processors. 714 To compile this driver as a module, choose M here: the 715 module will be called lpc18xx_wdt. 716 717config ATLAS7_WATCHDOG 718 tristate "CSRatlas7 watchdog" 719 depends on ARCH_ATLAS7 || COMPILE_TEST 720 help 721 Say Y here to include Watchdog timer support for the watchdog 722 existing on the CSRatlas7 series platforms. 723 724 To compile this driver as a module, choose M here: the 725 module will be called atlas7_wdt. 726 727config RENESAS_WDT 728 tristate "Renesas WDT Watchdog" 729 depends on ARCH_RENESAS || COMPILE_TEST 730 select WATCHDOG_CORE 731 help 732 This driver adds watchdog support for the integrated watchdogs in the 733 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT). 734 735config RENESAS_RZAWDT 736 tristate "Renesas RZ/A WDT Watchdog" 737 depends on ARCH_RENESAS || COMPILE_TEST 738 select WATCHDOG_CORE 739 help 740 This driver adds watchdog support for the integrated watchdogs in the 741 Renesas RZ/A SoCs. These watchdogs can be used to reset a system. 742 743config ASPEED_WATCHDOG 744 tristate "Aspeed 2400 watchdog support" 745 depends on ARCH_ASPEED || COMPILE_TEST 746 select WATCHDOG_CORE 747 help 748 Say Y here to include support for the watchdog timer 749 in Apseed BMC SoCs. 750 751 This driver is required to reboot the SoC. 752 753 To compile this driver as a module, choose M here: the 754 module will be called aspeed_wdt. 755 756config ZX2967_WATCHDOG 757 tristate "ZTE zx2967 SoCs watchdog support" 758 depends on ARCH_ZX 759 select WATCHDOG_CORE 760 help 761 Say Y here to include support for the watchdog timer 762 in ZTE zx2967 SoCs. 763 To compile this driver as a module, choose M here: the 764 module will be called zx2967_wdt. 765 766config STM32_WATCHDOG 767 tristate "STM32 Independent WatchDoG (IWDG) support" 768 depends on ARCH_STM32 769 select WATCHDOG_CORE 770 default y 771 help 772 Say Y here to include support for the watchdog timer 773 in stm32 SoCs. 774 775 To compile this driver as a module, choose M here: the 776 module will be called stm32_iwdg. 777 778config UNIPHIER_WATCHDOG 779 tristate "UniPhier watchdog support" 780 depends on ARCH_UNIPHIER || COMPILE_TEST 781 depends on OF && MFD_SYSCON 782 select WATCHDOG_CORE 783 help 784 Say Y here to include support watchdog timer embedded 785 into the UniPhier system. 786 787 To compile this driver as a module, choose M here: the 788 module will be called uniphier_wdt. 789 790# AVR32 Architecture 791 792config AT32AP700X_WDT 793 tristate "AT32AP700x watchdog" 794 depends on CPU_AT32AP700X || COMPILE_TEST 795 help 796 Watchdog timer embedded into AT32AP700x devices. This will reboot 797 your system when the timeout is reached. 798 799# BLACKFIN Architecture 800 801config BFIN_WDT 802 tristate "Blackfin On-Chip Watchdog Timer" 803 depends on BLACKFIN 804 ---help--- 805 If you say yes here you will get support for the Blackfin On-Chip 806 Watchdog Timer. If you have one of these processors and wish to 807 have watchdog support enabled, say Y, otherwise say N. 808 809 To compile this driver as a module, choose M here: the 810 module will be called bfin_wdt. 811 812# CRIS Architecture 813 814# FRV Architecture 815 816# X86 (i386 + ia64 + x86_64) Architecture 817 818config ACQUIRE_WDT 819 tristate "Acquire SBC Watchdog Timer" 820 depends on X86 821 ---help--- 822 This is the driver for the hardware watchdog on Single Board 823 Computers produced by Acquire Inc (and others). This watchdog 824 simply watches your kernel to make sure it doesn't freeze, and if 825 it does, it reboots your computer after a certain amount of time. 826 827 To compile this driver as a module, choose M here: the 828 module will be called acquirewdt. 829 830 Most people will say N. 831 832config ADVANTECH_WDT 833 tristate "Advantech SBC Watchdog Timer" 834 depends on X86 835 help 836 If you are configuring a Linux kernel for the Advantech single-board 837 computer, say `Y' here to support its built-in watchdog timer 838 feature. More information can be found at 839 <http://www.advantech.com.tw/products/> 840 841config ALIM1535_WDT 842 tristate "ALi M1535 PMU Watchdog Timer" 843 depends on X86 && PCI 844 ---help--- 845 This is the driver for the hardware watchdog on the ALi M1535 PMU. 846 847 To compile this driver as a module, choose M here: the 848 module will be called alim1535_wdt. 849 850 Most people will say N. 851 852config ALIM7101_WDT 853 tristate "ALi M7101 PMU Computer Watchdog" 854 depends on PCI 855 help 856 This is the driver for the hardware watchdog on the ALi M7101 PMU 857 as used in the x86 Cobalt servers and also found in some 858 SPARC Netra servers too. 859 860 To compile this driver as a module, choose M here: the 861 module will be called alim7101_wdt. 862 863 Most people will say N. 864 865config EBC_C384_WDT 866 tristate "WinSystems EBC-C384 Watchdog Timer" 867 depends on X86 && ISA_BUS_API 868 select WATCHDOG_CORE 869 help 870 Enables watchdog timer support for the watchdog timer on the 871 WinSystems EBC-C384 motherboard. The timeout may be configured via 872 the timeout module parameter. 873 874config F71808E_WDT 875 tristate "Fintek F718xx, F818xx Super I/O Watchdog" 876 depends on X86 877 help 878 This is the driver for the hardware watchdog on the Fintek F71808E, 879 F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866 880 Super I/O controllers. 881 882 You can compile this driver directly into the kernel, or use 883 it as a module. The module will be called f71808e_wdt. 884 885config SP5100_TCO 886 tristate "AMD/ATI SP5100 TCO Timer/Watchdog" 887 depends on X86 && PCI 888 ---help--- 889 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO 890 (Total Cost of Ownership) timer is a watchdog timer that will reboot 891 the machine after its expiration. The expiration time can be 892 configured with the "heartbeat" parameter. 893 894 To compile this driver as a module, choose M here: the 895 module will be called sp5100_tco. 896 897config GEODE_WDT 898 tristate "AMD Geode CS5535/CS5536 Watchdog" 899 depends on CS5535_MFGPT 900 help 901 This driver enables a watchdog capability built into the 902 CS5535/CS5536 companion chips for the AMD Geode GX and LX 903 processors. This watchdog watches your kernel to make sure 904 it doesn't freeze, and if it does, it reboots your computer after 905 a certain amount of time. 906 907 You can compile this driver directly into the kernel, or use 908 it as a module. The module will be called geodewdt. 909 910config SC520_WDT 911 tristate "AMD Elan SC520 processor Watchdog" 912 depends on MELAN || COMPILE_TEST 913 help 914 This is the driver for the hardware watchdog built in to the 915 AMD "Elan" SC520 microcomputer commonly used in embedded systems. 916 This watchdog simply watches your kernel to make sure it doesn't 917 freeze, and if it does, it reboots your computer after a certain 918 amount of time. 919 920 You can compile this driver directly into the kernel, or use 921 it as a module. The module will be called sc520_wdt. 922 923config SBC_FITPC2_WATCHDOG 924 tristate "Compulab SBC-FITPC2 watchdog" 925 depends on X86 926 ---help--- 927 This is the driver for the built-in watchdog timer on the fit-PC2, 928 fit-PC2i, CM-iAM single-board computers made by Compulab. 929 930 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux. 931 When "Watchdog Timer Value" enabled one can set 31-255 s operational range. 932 933 Entering BIOS setup temporary disables watchdog operation regardless to current state, 934 so system will not be restarted while user in BIOS setup. 935 936 Once watchdog was enabled the system will be restarted every 937 "Watchdog Timer Value" period, so to prevent it user can restart or 938 disable the watchdog. 939 940 To compile this driver as a module, choose M here: the 941 module will be called sbc_fitpc2_wdt. 942 943 Most people will say N. 944 945config EUROTECH_WDT 946 tristate "Eurotech CPU-1220/1410 Watchdog Timer" 947 depends on X86 948 help 949 Enable support for the watchdog timer on the Eurotech CPU-1220 and 950 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product 951 information are at <http://www.eurotech.it/>. 952 953config IB700_WDT 954 tristate "IB700 SBC Watchdog Timer" 955 depends on X86 956 ---help--- 957 This is the driver for the hardware watchdog on the IB700 Single 958 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog 959 simply watches your kernel to make sure it doesn't freeze, and if 960 it does, it reboots your computer after a certain amount of time. 961 962 This driver is like the WDT501 driver but for slightly different hardware. 963 964 To compile this driver as a module, choose M here: the 965 module will be called ib700wdt. 966 967 Most people will say N. 968 969config IBMASR 970 tristate "IBM Automatic Server Restart" 971 depends on X86 972 help 973 This is the driver for the IBM Automatic Server Restart watchdog 974 timer built-in into some eServer xSeries machines. 975 976 To compile this driver as a module, choose M here: the 977 module will be called ibmasr. 978 979config WAFER_WDT 980 tristate "ICP Single Board Computer Watchdog Timer" 981 depends on X86 982 help 983 This is a driver for the hardware watchdog on the ICP Single 984 Board Computer. This driver is working on (at least) the following 985 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782. 986 987 To compile this driver as a module, choose M here: the 988 module will be called wafer5823wdt. 989 990config I6300ESB_WDT 991 tristate "Intel 6300ESB Timer/Watchdog" 992 depends on PCI 993 ---help--- 994 Hardware driver for the watchdog timer built into the Intel 995 6300ESB controller hub. 996 997 To compile this driver as a module, choose M here: the 998 module will be called i6300esb. 999 1000config IE6XX_WDT 1001 tristate "Intel Atom E6xx Watchdog" 1002 depends on X86 && PCI 1003 select WATCHDOG_CORE 1004 select MFD_CORE 1005 select LPC_SCH 1006 ---help--- 1007 Hardware driver for the watchdog timer built into the Intel 1008 Atom E6XX (TunnelCreek) processor. 1009 1010 To compile this driver as a module, choose M here: the 1011 module will be called ie6xx_wdt. 1012 1013config INTEL_SCU_WATCHDOG 1014 bool "Intel SCU Watchdog for Mobile Platforms" 1015 depends on X86_INTEL_MID 1016 ---help--- 1017 Hardware driver for the watchdog time built into the Intel SCU 1018 for Intel Mobile Platforms. 1019 1020 To compile this driver as a module, choose M here. 1021 1022config INTEL_MID_WATCHDOG 1023 tristate "Intel MID Watchdog Timer" 1024 depends on X86_INTEL_MID 1025 select WATCHDOG_CORE 1026 ---help--- 1027 Watchdog timer driver built into the Intel SCU for Intel MID 1028 Platforms. 1029 1030 This driver currently supports only the watchdog evolution 1031 implementation in SCU, available for Merrifield generation. 1032 1033 To compile this driver as a module, choose M here. 1034 1035config ITCO_WDT 1036 tristate "Intel TCO Timer/Watchdog" 1037 depends on (X86 || IA64) && PCI 1038 select WATCHDOG_CORE 1039 depends on I2C || I2C=n 1040 select LPC_ICH if !EXPERT 1041 select I2C_I801 if !EXPERT && I2C 1042 ---help--- 1043 Hardware driver for the intel TCO timer based watchdog devices. 1044 These drivers are included in the Intel 82801 I/O Controller 1045 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB 1046 controller hub. 1047 1048 The TCO (Total Cost of Ownership) timer is a watchdog timer 1049 that will reboot the machine after its second expiration. The 1050 expiration time can be configured with the "heartbeat" parameter. 1051 1052 On some motherboards the driver may fail to reset the chipset's 1053 NO_REBOOT flag which prevents the watchdog from rebooting the 1054 machine. If this is the case you will get a kernel message like 1055 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1056 1057 To compile this driver as a module, choose M here: the 1058 module will be called iTCO_wdt. 1059 1060config ITCO_VENDOR_SUPPORT 1061 bool "Intel TCO Timer/Watchdog Specific Vendor Support" 1062 depends on ITCO_WDT 1063 ---help--- 1064 Add vendor specific support to the intel TCO timer based watchdog 1065 devices. At this moment we only have additional support for some 1066 SuperMicro Inc. motherboards. 1067 1068config IT8712F_WDT 1069 tristate "IT8712F (Smart Guardian) Watchdog Timer" 1070 depends on X86 1071 ---help--- 1072 This is the driver for the built-in watchdog timer on the IT8712F 1073 Super I/0 chipset used on many motherboards. 1074 1075 If the driver does not work, then make sure that the game port in 1076 the BIOS is enabled. 1077 1078 To compile this driver as a module, choose M here: the 1079 module will be called it8712f_wdt. 1080 1081config IT87_WDT 1082 tristate "IT87 Watchdog Timer" 1083 depends on X86 1084 select WATCHDOG_CORE 1085 ---help--- 1086 This is the driver for the hardware watchdog on the ITE IT8607, 1087 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702, 1088 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and 1089 IT8783 Super I/O chips. 1090 1091 This watchdog simply watches your kernel to make sure it doesn't 1092 freeze, and if it does, it reboots your computer after a certain 1093 amount of time. 1094 1095 To compile this driver as a module, choose M here: the module will 1096 be called it87_wdt. 1097 1098config HP_WATCHDOG 1099 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer" 1100 depends on X86 && PCI 1101 help 1102 A software monitoring watchdog and NMI sourcing driver. This driver 1103 will detect lockups and provide a stack trace. This is a driver that 1104 will only load on an HP ProLiant system with a minimum of iLO2 support. 1105 To compile this driver as a module, choose M here: the module will be 1106 called hpwdt. 1107 1108config KEMPLD_WDT 1109 tristate "Kontron COM Watchdog Timer" 1110 depends on MFD_KEMPLD 1111 select WATCHDOG_CORE 1112 help 1113 Support for the PLD watchdog on some Kontron ETX and COMexpress 1114 (ETXexpress) modules 1115 1116 This driver can also be built as a module. If so, the module will be 1117 called kempld_wdt. 1118 1119config HPWDT_NMI_DECODING 1120 bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer" 1121 depends on HP_WATCHDOG 1122 default y 1123 help 1124 When an NMI occurs this feature will make the necessary BIOS calls to 1125 log the cause of the NMI. 1126 1127config SC1200_WDT 1128 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" 1129 depends on X86 1130 help 1131 This is a driver for National Semiconductor PC87307/PC97307 hardware 1132 watchdog cards as found on the SC1200. This watchdog is mainly used 1133 for power management purposes and can be used to power down the device 1134 during inactivity periods (includes interrupt activity monitoring). 1135 1136 To compile this driver as a module, choose M here: the 1137 module will be called sc1200wdt. 1138 1139 Most people will say N. 1140 1141config SCx200_WDT 1142 tristate "National Semiconductor SCx200 Watchdog" 1143 depends on SCx200 && PCI 1144 help 1145 Enable the built-in watchdog timer support on the National 1146 Semiconductor SCx200 processors. 1147 1148 If compiled as a module, it will be called scx200_wdt. 1149 1150config PC87413_WDT 1151 tristate "NS PC87413 watchdog" 1152 depends on X86 1153 ---help--- 1154 This is the driver for the hardware watchdog on the PC87413 chipset 1155 This watchdog simply watches your kernel to make sure it doesn't 1156 freeze, and if it does, it reboots your computer after a certain 1157 amount of time. 1158 1159 To compile this driver as a module, choose M here: the 1160 module will be called pc87413_wdt. 1161 1162 Most people will say N. 1163 1164config NV_TCO 1165 tristate "nVidia TCO Timer/Watchdog" 1166 depends on X86 && PCI 1167 ---help--- 1168 Hardware driver for the TCO timer built into the nVidia Hub family 1169 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a 1170 watchdog timer that will reboot the machine after its second 1171 expiration. The expiration time can be configured with the 1172 "heartbeat" parameter. 1173 1174 On some motherboards the driver may fail to reset the chipset's 1175 NO_REBOOT flag which prevents the watchdog from rebooting the 1176 machine. If this is the case you will get a kernel message like 1177 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1178 1179 To compile this driver as a module, choose M here: the 1180 module will be called nv_tco. 1181 1182config RDC321X_WDT 1183 tristate "RDC R-321x SoC watchdog" 1184 depends on X86_RDC321X || COMPILE_TEST 1185 depends on PCI 1186 help 1187 This is the driver for the built in hardware watchdog 1188 in the RDC R-321x SoC. 1189 1190 To compile this driver as a module, choose M here: the 1191 module will be called rdc321x_wdt. 1192 1193config 60XX_WDT 1194 tristate "SBC-60XX Watchdog Timer" 1195 depends on X86 1196 help 1197 This driver can be used with the watchdog timer found on some 1198 single board computers, namely the 6010 PII based computer. 1199 It may well work with other cards. It reads port 0x443 to enable 1200 and re-set the watchdog timer, and reads port 0x45 to disable 1201 the watchdog. If you have a card that behave in similar ways, 1202 you can probably make this driver work with your card as well. 1203 1204 You can compile this driver directly into the kernel, or use 1205 it as a module. The module will be called sbc60xxwdt. 1206 1207config SBC8360_WDT 1208 tristate "SBC8360 Watchdog Timer" 1209 depends on X86_32 1210 ---help--- 1211 1212 This is the driver for the hardware watchdog on the SBC8360 Single 1213 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com). 1214 1215 To compile this driver as a module, choose M here: the 1216 module will be called sbc8360. 1217 1218 Most people will say N. 1219 1220config SBC7240_WDT 1221 tristate "SBC Nano 7240 Watchdog Timer" 1222 depends on X86_32 && !UML 1223 ---help--- 1224 This is the driver for the hardware watchdog found on the IEI 1225 single board computers EPIC Nano 7240 (and likely others). This 1226 watchdog simply watches your kernel to make sure it doesn't freeze, 1227 and if it does, it reboots your computer after a certain amount of 1228 time. 1229 1230 To compile this driver as a module, choose M here: the 1231 module will be called sbc7240_wdt. 1232 1233config CPU5_WDT 1234 tristate "SMA CPU5 Watchdog" 1235 depends on X86 1236 ---help--- 1237 TBD. 1238 To compile this driver as a module, choose M here: the 1239 module will be called cpu5wdt. 1240 1241config SMSC_SCH311X_WDT 1242 tristate "SMSC SCH311X Watchdog Timer" 1243 depends on X86 1244 ---help--- 1245 This is the driver for the hardware watchdog timer on the 1246 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset 1247 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple 1248 serial ports). 1249 1250 To compile this driver as a module, choose M here: the 1251 module will be called sch311x_wdt. 1252 1253config SMSC37B787_WDT 1254 tristate "Winbond SMsC37B787 Watchdog Timer" 1255 depends on X86 1256 ---help--- 1257 This is the driver for the hardware watchdog component on the 1258 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard 1259 from Vision Systems and maybe others. 1260 1261 This watchdog simply watches your kernel to make sure it doesn't 1262 freeze, and if it does, it reboots your computer after a certain 1263 amount of time. 1264 1265 Usually a userspace daemon will notify the kernel WDT driver that 1266 userspace is still alive, at regular intervals. 1267 1268 To compile this driver as a module, choose M here: the 1269 module will be called smsc37b787_wdt. 1270 1271 Most people will say N. 1272 1273config VIA_WDT 1274 tristate "VIA Watchdog Timer" 1275 depends on X86 && PCI 1276 select WATCHDOG_CORE 1277 ---help--- 1278 This is the driver for the hardware watchdog timer on VIA 1279 southbridge chipset CX700, VX800/VX820 or VX855/VX875. 1280 1281 To compile this driver as a module, choose M here; the module 1282 will be called via_wdt. 1283 1284 Most people will say N. 1285 1286config W83627HF_WDT 1287 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles" 1288 depends on X86 1289 select WATCHDOG_CORE 1290 ---help--- 1291 This is the driver for the hardware watchdog on the following 1292 Super I/O chips. 1293 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG 1294 W83637HF 1295 W83667HG/HG-B 1296 W83687THF 1297 W83697HF 1298 W83697UG 1299 NCT6775 1300 NCT6776 1301 NCT6779 1302 NCT6791 1303 NCT6792 1304 NCT6102D/04D/06D 1305 1306 This watchdog simply watches your kernel to make sure it doesn't 1307 freeze, and if it does, it reboots your computer after a certain 1308 amount of time. 1309 1310 To compile this driver as a module, choose M here: the 1311 module will be called w83627hf_wdt. 1312 1313 Most people will say N. 1314 1315config W83877F_WDT 1316 tristate "W83877F (EMACS) Watchdog Timer" 1317 depends on X86 1318 ---help--- 1319 This is the driver for the hardware watchdog on the W83877F chipset 1320 as used in EMACS PC-104 motherboards (and likely others). This 1321 watchdog simply watches your kernel to make sure it doesn't freeze, 1322 and if it does, it reboots your computer after a certain amount of 1323 time. 1324 1325 To compile this driver as a module, choose M here: the 1326 module will be called w83877f_wdt. 1327 1328 Most people will say N. 1329 1330config W83977F_WDT 1331 tristate "W83977F (PCM-5335) Watchdog Timer" 1332 depends on X86 1333 ---help--- 1334 This is the driver for the hardware watchdog on the W83977F I/O chip 1335 as used in AAEON's PCM-5335 SBC (and likely others). This 1336 watchdog simply watches your kernel to make sure it doesn't freeze, 1337 and if it does, it reboots your computer after a certain amount of 1338 time. 1339 1340 To compile this driver as a module, choose M here: the 1341 module will be called w83977f_wdt. 1342 1343config MACHZ_WDT 1344 tristate "ZF MachZ Watchdog" 1345 depends on X86 1346 ---help--- 1347 If you are using a ZF Micro MachZ processor, say Y here, otherwise 1348 N. This is the driver for the watchdog timer built-in on that 1349 processor using ZF-Logic interface. This watchdog simply watches 1350 your kernel to make sure it doesn't freeze, and if it does, it 1351 reboots your computer after a certain amount of time. 1352 1353 To compile this driver as a module, choose M here: the 1354 module will be called machzwd. 1355 1356config SBC_EPX_C3_WATCHDOG 1357 tristate "Winsystems SBC EPX-C3 watchdog" 1358 depends on X86 1359 ---help--- 1360 This is the driver for the built-in watchdog timer on the EPX-C3 1361 Single-board computer made by Winsystems, Inc. 1362 1363 *Note*: This hardware watchdog is not probeable and thus there 1364 is no way to know if writing to its IO address will corrupt 1365 your system or have any real effect. The only way to be sure 1366 that this driver does what you want is to make sure you 1367 are running it on an EPX-C3 from Winsystems with the watchdog 1368 timer at IO address 0x1ee and 0x1ef. It will write to both those 1369 IO ports. Basically, the assumption is made that if you compile 1370 this driver into your kernel and/or load it as a module, that you 1371 know what you are doing and that you are in fact running on an 1372 EPX-C3 board! 1373 1374 To compile this driver as a module, choose M here: the 1375 module will be called sbc_epx_c3. 1376 1377config INTEL_MEI_WDT 1378 tristate "Intel MEI iAMT Watchdog" 1379 depends on INTEL_MEI && X86 1380 select WATCHDOG_CORE 1381 ---help--- 1382 A device driver for the Intel MEI iAMT watchdog. 1383 1384 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog. 1385 Whenever the OS hangs or crashes, iAMT will send an event 1386 to any subscriber to this event. The watchdog doesn't reset the 1387 the platform. 1388 1389 To compile this driver as a module, choose M here: 1390 the module will be called mei_wdt. 1391 1392config NI903X_WDT 1393 tristate "NI 903x/913x Watchdog" 1394 depends on X86 && ACPI 1395 select WATCHDOG_CORE 1396 ---help--- 1397 This is the driver for the watchdog timer on the National Instruments 1398 903x/913x real-time controllers. 1399 1400 To compile this driver as a module, choose M here: the module will be 1401 called ni903x_wdt. 1402 1403config NIC7018_WDT 1404 tristate "NIC7018 Watchdog" 1405 depends on X86 && ACPI 1406 select WATCHDOG_CORE 1407 ---help--- 1408 Support for National Instruments NIC7018 Watchdog. 1409 1410 To compile this driver as a module, choose M here: the module will be 1411 called nic7018_wdt. 1412 1413# M32R Architecture 1414 1415# M68K Architecture 1416 1417config M54xx_WATCHDOG 1418 tristate "MCF54xx watchdog support" 1419 depends on M548x 1420 help 1421 To compile this driver as a module, choose M here: the 1422 module will be called m54xx_wdt. 1423 1424# MicroBlaze Architecture 1425 1426# MIPS Architecture 1427 1428config ATH79_WDT 1429 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog" 1430 depends on ATH79 || (ARM && COMPILE_TEST) 1431 help 1432 Hardware driver for the built-in watchdog timer on the Atheros 1433 AR71XX/AR724X/AR913X SoCs. 1434 1435config BCM47XX_WDT 1436 tristate "Broadcom BCM47xx Watchdog Timer" 1437 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST 1438 select WATCHDOG_CORE 1439 help 1440 Hardware driver for the Broadcom BCM47xx Watchdog Timer. 1441 1442config RC32434_WDT 1443 tristate "IDT RC32434 SoC Watchdog Timer" 1444 depends on MIKROTIK_RB532 1445 help 1446 Hardware driver for the IDT RC32434 SoC built-in 1447 watchdog timer. 1448 1449 To compile this driver as a module, choose M here: the 1450 module will be called rc32434_wdt. 1451 1452config INDYDOG 1453 tristate "Indy/I2 Hardware Watchdog" 1454 depends on SGI_HAS_INDYDOG || (MIPS && COMPILE_TEST) 1455 help 1456 Hardware driver for the Indy's/I2's watchdog. This is a 1457 watchdog timer that will reboot the machine after a 60 second 1458 timer expired and no process has written to /dev/watchdog during 1459 that time. 1460 1461config JZ4740_WDT 1462 tristate "Ingenic jz4740 SoC hardware watchdog" 1463 depends on MACH_JZ4740 1464 select WATCHDOG_CORE 1465 help 1466 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. 1467 1468config WDT_MTX1 1469 tristate "MTX-1 Hardware Watchdog" 1470 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST) 1471 help 1472 Hardware driver for the MTX-1 boards. This is a watchdog timer that 1473 will reboot the machine after a 100 seconds timer expired. 1474 1475config PNX833X_WDT 1476 tristate "PNX833x Hardware Watchdog" 1477 depends on SOC_PNX8335 1478 depends on BROKEN 1479 help 1480 Hardware driver for the PNX833x's watchdog. This is a 1481 watchdog timer that will reboot the machine after a programmable 1482 timer has expired and no process has written to /dev/watchdog during 1483 that time. 1484 1485config SIBYTE_WDOG 1486 tristate "Sibyte SoC hardware watchdog" 1487 depends on CPU_SB1 || (MIPS && COMPILE_TEST) 1488 help 1489 Watchdog driver for the built in watchdog hardware in Sibyte 1490 SoC processors. There are apparently two watchdog timers 1491 on such processors; this driver supports only the first one, 1492 because currently Linux only supports exporting one watchdog 1493 to userspace. 1494 1495 To compile this driver as a loadable module, choose M here. 1496 The module will be called sb_wdog. 1497 1498config AR7_WDT 1499 tristate "TI AR7 Watchdog Timer" 1500 depends on AR7 || (MIPS && COMPILE_TEST) 1501 help 1502 Hardware driver for the TI AR7 Watchdog Timer. 1503 1504config TXX9_WDT 1505 tristate "Toshiba TXx9 Watchdog Timer" 1506 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST) 1507 select WATCHDOG_CORE 1508 help 1509 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. 1510 1511config OCTEON_WDT 1512 tristate "Cavium OCTEON SOC family Watchdog Timer" 1513 depends on CAVIUM_OCTEON_SOC 1514 default y 1515 select WATCHDOG_CORE 1516 select EXPORT_UASM if OCTEON_WDT = m 1517 help 1518 Hardware driver for OCTEON's on chip watchdog timer. 1519 Enables the watchdog for all cores running Linux. It 1520 installs a NMI handler and pokes the watchdog based on an 1521 interrupt. On first expiration of the watchdog, the 1522 interrupt handler pokes it. The second expiration causes an 1523 NMI that prints a message. The third expiration causes a 1524 global soft reset. 1525 1526 When userspace has /dev/watchdog open, no poking is done 1527 from the first interrupt, it is then only poked when the 1528 device is written. 1529 1530config BCM63XX_WDT 1531 tristate "Broadcom BCM63xx hardware watchdog" 1532 depends on BCM63XX 1533 help 1534 Watchdog driver for the built in watchdog hardware in Broadcom 1535 BCM63xx SoC. 1536 1537 To compile this driver as a loadable module, choose M here. 1538 The module will be called bcm63xx_wdt. 1539 1540config BCM2835_WDT 1541 tristate "Broadcom BCM2835 hardware watchdog" 1542 depends on ARCH_BCM2835 || (OF && COMPILE_TEST) 1543 select WATCHDOG_CORE 1544 help 1545 Watchdog driver for the built in watchdog hardware in Broadcom 1546 BCM2835 SoC. 1547 1548 To compile this driver as a loadable module, choose M here. 1549 The module will be called bcm2835_wdt. 1550 1551config BCM_KONA_WDT 1552 tristate "BCM Kona Watchdog" 1553 depends on ARCH_BCM_MOBILE || COMPILE_TEST 1554 select WATCHDOG_CORE 1555 help 1556 Support for the watchdog timer on the following Broadcom BCM281xx 1557 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and 1558 BCM28155 variants. 1559 1560 Say 'Y' or 'M' here to enable the driver. The module will be called 1561 bcm_kona_wdt. 1562 1563config BCM_KONA_WDT_DEBUG 1564 bool "DEBUGFS support for BCM Kona Watchdog" 1565 depends on BCM_KONA_WDT || COMPILE_TEST 1566 help 1567 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides 1568 access to the driver's internal data structures as well as watchdog 1569 timer hardware registres. 1570 1571 If in doubt, say 'N'. 1572 1573config BCM7038_WDT 1574 tristate "BCM7038 Watchdog" 1575 select WATCHDOG_CORE 1576 depends on HAS_IOMEM 1577 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST 1578 help 1579 Watchdog driver for the built-in hardware in Broadcom 7038 and 1580 later SoCs used in set-top boxes. BCM7038 was made public 1581 during the 2004 CES, and since then, many Broadcom chips use this 1582 watchdog block, including some cable modem chips. 1583 1584config IMGPDC_WDT 1585 tristate "Imagination Technologies PDC Watchdog Timer" 1586 depends on HAS_IOMEM 1587 depends on METAG || MIPS || COMPILE_TEST 1588 select WATCHDOG_CORE 1589 help 1590 Driver for Imagination Technologies PowerDown Controller 1591 Watchdog Timer. 1592 1593 To compile this driver as a loadable module, choose M here. 1594 The module will be called imgpdc_wdt. 1595 1596config LANTIQ_WDT 1597 tristate "Lantiq SoC watchdog" 1598 depends on LANTIQ 1599 help 1600 Hardware driver for the Lantiq SoC Watchdog Timer. 1601 1602config LOONGSON1_WDT 1603 tristate "Loongson1 SoC hardware watchdog" 1604 depends on MACH_LOONGSON32 1605 select WATCHDOG_CORE 1606 help 1607 Hardware driver for the Loongson1 SoC Watchdog Timer. 1608 1609config RALINK_WDT 1610 tristate "Ralink SoC watchdog" 1611 select WATCHDOG_CORE 1612 depends on RALINK 1613 help 1614 Hardware driver for the Ralink SoC Watchdog Timer. 1615 1616config MT7621_WDT 1617 tristate "Mediatek SoC watchdog" 1618 select WATCHDOG_CORE 1619 depends on SOC_MT7620 || SOC_MT7621 1620 help 1621 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer. 1622 1623config PIC32_WDT 1624 tristate "Microchip PIC32 hardware watchdog" 1625 select WATCHDOG_CORE 1626 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1627 help 1628 Watchdog driver for the built in watchdog hardware in a PIC32. 1629 1630 Configuration bits must be set appropriately for the watchdog to be 1631 controlled by this driver. 1632 1633 To compile this driver as a loadable module, choose M here. 1634 The module will be called pic32-wdt. 1635 1636config PIC32_DMT 1637 tristate "Microchip PIC32 Deadman Timer" 1638 select WATCHDOG_CORE 1639 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1640 help 1641 Watchdog driver for PIC32 instruction fetch counting timer. This specific 1642 timer is typically be used in misson critical and safety critical 1643 applications, where any single failure of the software functionality 1644 and sequencing must be detected. 1645 1646 To compile this driver as a loadable module, choose M here. 1647 The module will be called pic32-dmt. 1648 1649# PARISC Architecture 1650 1651# POWERPC Architecture 1652 1653config GEF_WDT 1654 tristate "GE Watchdog Timer" 1655 depends on GE_FPGA 1656 ---help--- 1657 Watchdog timer found in a number of GE single board computers. 1658 1659config MPC5200_WDT 1660 bool "MPC52xx Watchdog Timer" 1661 depends on PPC_MPC52xx || COMPILE_TEST 1662 help 1663 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog. 1664 1665config 8xxx_WDT 1666 tristate "MPC8xxx Platform Watchdog Timer" 1667 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x 1668 select WATCHDOG_CORE 1669 help 1670 This driver is for a SoC level watchdog that exists on some 1671 Freescale PowerPC processors. So far this driver supports: 1672 - MPC8xx watchdogs 1673 - MPC83xx watchdogs 1674 - MPC86xx watchdogs 1675 1676 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead. 1677 1678config MV64X60_WDT 1679 tristate "MV64X60 (Marvell Discovery) Watchdog Timer" 1680 depends on MV64X60 || COMPILE_TEST 1681 1682config PIKA_WDT 1683 tristate "PIKA FPGA Watchdog" 1684 depends on WARP || (PPC64 && COMPILE_TEST) 1685 default y 1686 help 1687 This enables the watchdog in the PIKA FPGA. Currently used on 1688 the Warp platform. 1689 1690config BOOKE_WDT 1691 tristate "PowerPC Book-E Watchdog Timer" 1692 depends on BOOKE || 4xx 1693 select WATCHDOG_CORE 1694 ---help--- 1695 Watchdog driver for PowerPC Book-E chips, such as the Freescale 1696 MPC85xx SOCs and the IBM PowerPC 440. 1697 1698 Please see Documentation/watchdog/watchdog-api.txt for 1699 more information. 1700 1701config BOOKE_WDT_DEFAULT_TIMEOUT 1702 int "PowerPC Book-E Watchdog Timer Default Timeout" 1703 depends on BOOKE_WDT 1704 default 38 if PPC_FSL_BOOK3E 1705 range 0 63 if PPC_FSL_BOOK3E 1706 default 3 if !PPC_FSL_BOOK3E 1707 range 0 3 if !PPC_FSL_BOOK3E 1708 help 1709 Select the default watchdog timer period to be used by the PowerPC 1710 Book-E watchdog driver. A watchdog "event" occurs when the bit 1711 position represented by this number transitions from zero to one. 1712 1713 For Freescale Book-E processors, this is a number between 0 and 63. 1714 For other Book-E processors, this is a number between 0 and 3. 1715 1716 The value can be overridden by the wdt_period command-line parameter. 1717 1718config MEN_A21_WDT 1719 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer" 1720 select WATCHDOG_CORE 1721 depends on GPIOLIB || COMPILE_TEST 1722 help 1723 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards. 1724 1725 The driver can also be built as a module. If so, the module will be 1726 called mena21_wdt. 1727 1728 If unsure select N here. 1729 1730# PPC64 Architecture 1731 1732config WATCHDOG_RTAS 1733 tristate "RTAS watchdog" 1734 depends on PPC_RTAS 1735 help 1736 This driver adds watchdog support for the RTAS watchdog. 1737 1738 To compile this driver as a module, choose M here. The module 1739 will be called wdrtas. 1740 1741# S390 Architecture 1742 1743config DIAG288_WATCHDOG 1744 tristate "System z diag288 Watchdog" 1745 depends on S390 1746 select WATCHDOG_CORE 1747 help 1748 IBM s/390 and zSeries machines running under z/VM 5.1 or later 1749 provide a virtual watchdog timer to their guest that cause a 1750 user define Control Program command to be executed after a 1751 timeout. 1752 LPAR provides a very similar interface. This driver handles 1753 both. 1754 1755 To compile this driver as a module, choose M here. The module 1756 will be called diag288_wdt. 1757 1758# SUPERH (sh + sh64) Architecture 1759 1760config SH_WDT 1761 tristate "SuperH Watchdog" 1762 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST) 1763 select WATCHDOG_CORE 1764 help 1765 This driver adds watchdog support for the integrated watchdog in the 1766 SuperH processors. If you have one of these processors and wish 1767 to have watchdog support enabled, say Y, otherwise say N. 1768 1769 As a side note, saying Y here will automatically boost HZ to 1000 1770 so that the timer has a chance to clear the overflow counter. On 1771 slower systems (such as the SH-2 and SH-3) this will likely yield 1772 some performance issues. As such, the WDT should be avoided here 1773 unless it is absolutely necessary. 1774 1775 To compile this driver as a module, choose M here: the 1776 module will be called shwdt. 1777 1778# SPARC Architecture 1779 1780# SPARC64 Architecture 1781 1782config WATCHDOG_CP1XXX 1783 tristate "CP1XXX Hardware Watchdog support" 1784 depends on SPARC64 && PCI 1785 ---help--- 1786 This is the driver for the hardware watchdog timers present on 1787 Sun Microsystems CompactPCI models CP1400 and CP1500. 1788 1789 To compile this driver as a module, choose M here: the 1790 module will be called cpwatchdog. 1791 1792 If you do not have a CompactPCI model CP1400 or CP1500, or 1793 another UltraSPARC-IIi-cEngine boardset with hardware watchdog, 1794 you should say N to this option. 1795 1796config WATCHDOG_RIO 1797 tristate "RIO Hardware Watchdog support" 1798 depends on SPARC64 && PCI 1799 help 1800 Say Y here to support the hardware watchdog capability on Sun RIO 1801 machines. The watchdog timeout period is normally one minute but 1802 can be changed with a boot-time parameter. 1803 1804config WATCHDOG_SUN4V 1805 tristate "Sun4v Watchdog support" 1806 select WATCHDOG_CORE 1807 depends on SPARC64 1808 help 1809 Say Y here to support the hypervisor watchdog capability embedded 1810 in the SPARC sun4v architecture. 1811 1812 To compile this driver as a module, choose M here. The module will 1813 be called sun4v_wdt. 1814 1815# XTENSA Architecture 1816 1817# Xen Architecture 1818 1819config XEN_WDT 1820 tristate "Xen Watchdog support" 1821 depends on XEN 1822 help 1823 Say Y here to support the hypervisor watchdog capability provided 1824 by Xen 4.0 and newer. The watchdog timeout period is normally one 1825 minute but can be changed with a boot-time parameter. 1826 1827config UML_WATCHDOG 1828 tristate "UML watchdog" 1829 depends on UML || COMPILE_TEST 1830 1831# 1832# ISA-based Watchdog Cards 1833# 1834 1835comment "ISA-based Watchdog Cards" 1836 depends on ISA 1837 1838config PCWATCHDOG 1839 tristate "Berkshire Products ISA-PC Watchdog" 1840 depends on ISA 1841 ---help--- 1842 This is the driver for the Berkshire Products ISA-PC Watchdog card. 1843 This card simply watches your kernel to make sure it doesn't freeze, 1844 and if it does, it reboots your computer after a certain amount of 1845 time. This driver is like the WDT501 driver but for different 1846 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC 1847 watchdog cards can be ordered from <http://www.berkprod.com/>. 1848 1849 To compile this driver as a module, choose M here: the 1850 module will be called pcwd. 1851 1852 Most people will say N. 1853 1854config MIXCOMWD 1855 tristate "Mixcom Watchdog" 1856 depends on ISA 1857 ---help--- 1858 This is a driver for the Mixcom hardware watchdog cards. This 1859 watchdog simply watches your kernel to make sure it doesn't freeze, 1860 and if it does, it reboots your computer after a certain amount of 1861 time. 1862 1863 To compile this driver as a module, choose M here: the 1864 module will be called mixcomwd. 1865 1866 Most people will say N. 1867 1868config WDT 1869 tristate "WDT Watchdog timer" 1870 depends on ISA 1871 ---help--- 1872 If you have a WDT500P or WDT501P watchdog board, say Y here, 1873 otherwise N. It is not possible to probe for this board, which means 1874 that you have to inform the kernel about the IO port and IRQ that 1875 is needed (you can do this via the io and irq parameters) 1876 1877 To compile this driver as a module, choose M here: the 1878 module will be called wdt. 1879 1880# 1881# PCI-based Watchdog Cards 1882# 1883 1884comment "PCI-based Watchdog Cards" 1885 depends on PCI 1886 1887config PCIPCWATCHDOG 1888 tristate "Berkshire Products PCI-PC Watchdog" 1889 depends on PCI 1890 ---help--- 1891 This is the driver for the Berkshire Products PCI-PC Watchdog card. 1892 This card simply watches your kernel to make sure it doesn't freeze, 1893 and if it does, it reboots your computer after a certain amount of 1894 time. The card can also monitor the internal temperature of the PC. 1895 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>. 1896 1897 To compile this driver as a module, choose M here: the 1898 module will be called pcwd_pci. 1899 1900 Most people will say N. 1901 1902config WDTPCI 1903 tristate "PCI-WDT500/501 Watchdog timer" 1904 depends on PCI 1905 ---help--- 1906 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N. 1907 1908 If you have a PCI-WDT501 watchdog board then you can enable the 1909 temperature sensor by setting the type parameter to 501. 1910 1911 If you want to enable the Fan Tachometer on the PCI-WDT501, then you 1912 can do this via the tachometer parameter. Only do this if you have a 1913 fan tachometer actually set up. 1914 1915 To compile this driver as a module, choose M here: the 1916 module will be called wdt_pci. 1917 1918# 1919# USB-based Watchdog Cards 1920# 1921 1922comment "USB-based Watchdog Cards" 1923 depends on USB 1924 1925config USBPCWATCHDOG 1926 tristate "Berkshire Products USB-PC Watchdog" 1927 depends on USB 1928 ---help--- 1929 This is the driver for the Berkshire Products USB-PC Watchdog card. 1930 This card simply watches your kernel to make sure it doesn't freeze, 1931 and if it does, it reboots your computer after a certain amount of 1932 time. The card can also monitor the internal temperature of the PC. 1933 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>. 1934 1935 To compile this driver as a module, choose M here: the 1936 module will be called pcwd_usb. 1937 1938 Most people will say N. 1939 1940comment "Watchdog Pretimeout Governors" 1941 1942config WATCHDOG_PRETIMEOUT_GOV 1943 bool "Enable watchdog pretimeout governors" 1944 help 1945 The option allows to select watchdog pretimeout governors. 1946 1947if WATCHDOG_PRETIMEOUT_GOV 1948 1949choice 1950 prompt "Default Watchdog Pretimeout Governor" 1951 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC 1952 help 1953 This option selects a default watchdog pretimeout governor. 1954 The governor takes its action, if a watchdog is capable 1955 to report a pretimeout event. 1956 1957config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP 1958 bool "noop" 1959 select WATCHDOG_PRETIMEOUT_GOV_NOOP 1960 help 1961 Use noop watchdog pretimeout governor by default. If noop 1962 governor is selected by a user, write a short message to 1963 the kernel log buffer and don't do any system changes. 1964 1965config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC 1966 bool "panic" 1967 select WATCHDOG_PRETIMEOUT_GOV_PANIC 1968 help 1969 Use panic watchdog pretimeout governor by default, if 1970 a watchdog pretimeout event happens, consider that 1971 a watchdog feeder is dead and reboot is unavoidable. 1972 1973endchoice 1974 1975config WATCHDOG_PRETIMEOUT_GOV_NOOP 1976 tristate "Noop watchdog pretimeout governor" 1977 help 1978 Noop watchdog pretimeout governor, only an informational 1979 message is added to kernel log buffer. 1980 1981config WATCHDOG_PRETIMEOUT_GOV_PANIC 1982 tristate "Panic watchdog pretimeout governor" 1983 help 1984 Panic watchdog pretimeout governor, on watchdog pretimeout 1985 event put the kernel into panic. 1986 1987endif # WATCHDOG_PRETIMEOUT_GOV 1988 1989endif # WATCHDOG 1990