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 226config RAVE_SP_WATCHDOG 227 tristate "RAVE SP Watchdog timer" 228 depends on RAVE_SP_CORE 229 select WATCHDOG_CORE 230 help 231 Support for the watchdog on RAVE SP device. 232 233# ALPHA Architecture 234 235# ARM Architecture 236 237config ARM_SP805_WATCHDOG 238 tristate "ARM SP805 Watchdog" 239 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA 240 select WATCHDOG_CORE 241 help 242 ARM Primecell SP805 Watchdog timer. This will reboot your system when 243 the timeout is reached. 244 245config ARM_SBSA_WATCHDOG 246 tristate "ARM SBSA Generic Watchdog" 247 depends on ARM64 248 depends on ARM_ARCH_TIMER 249 select WATCHDOG_CORE 250 help 251 ARM SBSA Generic Watchdog has two stage timeouts: 252 the first signal (WS0) is for alerting the system by interrupt, 253 the second one (WS1) is a real hardware reset. 254 More details: ARM DEN0029B - Server Base System Architecture (SBSA) 255 256 This driver can operate ARM SBSA Generic Watchdog as a single stage 257 or a two stages watchdog, it depends on the module parameter "action". 258 259 Note: the maximum timeout in the two stages mode is half of that in 260 the single stage mode. 261 262 To compile this driver as module, choose M here: The module 263 will be called sbsa_gwdt. 264 265config ASM9260_WATCHDOG 266 tristate "Alphascale ASM9260 watchdog" 267 depends on MACH_ASM9260 || COMPILE_TEST 268 depends on OF 269 select WATCHDOG_CORE 270 select RESET_CONTROLLER 271 help 272 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your 273 system when the timeout is reached. 274 275config AT91RM9200_WATCHDOG 276 tristate "AT91RM9200 watchdog" 277 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST 278 help 279 Watchdog timer embedded into AT91RM9200 chips. This will reboot your 280 system when the timeout is reached. 281 282config AT91SAM9X_WATCHDOG 283 tristate "AT91SAM9X / AT91CAP9 watchdog" 284 depends on ARCH_AT91 || COMPILE_TEST 285 select WATCHDOG_CORE 286 help 287 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will 288 reboot your system when the timeout is reached. 289 290config SAMA5D4_WATCHDOG 291 tristate "Atmel SAMA5D4 Watchdog Timer" 292 depends on ARCH_AT91 || COMPILE_TEST 293 select WATCHDOG_CORE 294 help 295 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips. 296 Its Watchdog Timer Mode Register can be written more than once. 297 This will reboot your system when the timeout is reached. 298 299config CADENCE_WATCHDOG 300 tristate "Cadence Watchdog Timer" 301 depends on HAS_IOMEM 302 select WATCHDOG_CORE 303 help 304 Say Y here if you want to include support for the watchdog 305 timer in the Xilinx Zynq. 306 307config 21285_WATCHDOG 308 tristate "DC21285 watchdog" 309 depends on FOOTBRIDGE 310 help 311 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y 312 here if you wish to use this. Alternatively say M to compile the 313 driver as a module, which will be called wdt285. 314 315 This driver does not work on all machines. In particular, early CATS 316 boards have hardware problems that will cause the machine to simply 317 lock up if the watchdog fires. 318 319 "If in doubt, leave it out" - say N. 320 321config 977_WATCHDOG 322 tristate "NetWinder WB83C977 watchdog" 323 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST) 324 help 325 Say Y here to include support for the WB977 watchdog included in 326 NetWinder machines. Alternatively say M to compile the driver as 327 a module, which will be called wdt977. 328 329 Not sure? It's safe to say N. 330 331config GEMINI_WATCHDOG 332 tristate "Gemini watchdog" 333 depends on ARCH_GEMINI 334 select WATCHDOG_CORE 335 help 336 Say Y here if to include support for the watchdog timer 337 embedded in the Cortina Systems Gemini family of devices. 338 339 To compile this driver as a module, choose M here: the 340 module will be called gemini_wdt. 341 342config IXP4XX_WATCHDOG 343 tristate "IXP4xx Watchdog" 344 depends on ARCH_IXP4XX 345 help 346 Say Y here if to include support for the watchdog timer 347 in the Intel IXP4xx network processors. This driver can 348 be built as a module by choosing M. The module will 349 be called ixp4xx_wdt. 350 351 Note: The internal IXP4xx watchdog does a soft CPU reset 352 which doesn't reset any peripherals. There are circumstances 353 where the watchdog will fail to reset the board correctly 354 (e.g., if the boot ROM is in an unreadable state). 355 356 Say N if you are unsure. 357 358config KS8695_WATCHDOG 359 tristate "KS8695 watchdog" 360 depends on ARCH_KS8695 361 help 362 Watchdog timer embedded into KS8695 processor. This will reboot your 363 system when the timeout is reached. 364 365config HAVE_S3C2410_WATCHDOG 366 bool 367 help 368 This will include watchdog timer support for Samsung SoCs. If 369 you want to include watchdog support for any machine, kindly 370 select this in the respective mach-XXXX/Kconfig file. 371 372config S3C2410_WATCHDOG 373 tristate "S3C2410 Watchdog" 374 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST 375 select WATCHDOG_CORE 376 select MFD_SYSCON if ARCH_EXYNOS 377 help 378 Watchdog timer block in the Samsung SoCs. This will reboot 379 the system when the timer expires with the watchdog enabled. 380 381 The driver is limited by the speed of the system's PCLK 382 signal, so with reasonably fast systems (PCLK around 50-66MHz) 383 then watchdog intervals of over approximately 20seconds are 384 unavailable. 385 386 The driver can be built as a module by choosing M, and will 387 be called s3c2410_wdt 388 389config SA1100_WATCHDOG 390 tristate "SA1100/PXA2xx watchdog" 391 depends on ARCH_SA1100 || ARCH_PXA 392 help 393 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will 394 reboot your system when timeout is reached. 395 396 NOTE: once enabled, this timer cannot be disabled. 397 398 To compile this driver as a module, choose M here: the 399 module will be called sa1100_wdt. 400 401config DW_WATCHDOG 402 tristate "Synopsys DesignWare watchdog" 403 depends on HAS_IOMEM 404 select WATCHDOG_CORE 405 help 406 Say Y here if to include support for the Synopsys DesignWare 407 watchdog timer found in many chips. 408 To compile this driver as a module, choose M here: the 409 module will be called dw_wdt. 410 411config EP93XX_WATCHDOG 412 tristate "EP93xx Watchdog" 413 depends on ARCH_EP93XX || COMPILE_TEST 414 select WATCHDOG_CORE 415 help 416 Say Y here if to include support for the watchdog timer 417 embedded in the Cirrus Logic EP93xx family of devices. 418 419 To compile this driver as a module, choose M here: the 420 module will be called ep93xx_wdt. 421 422config OMAP_WATCHDOG 423 tristate "OMAP Watchdog" 424 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST 425 select WATCHDOG_CORE 426 help 427 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y' 428 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer. 429 430config PNX4008_WATCHDOG 431 tristate "LPC32XX Watchdog" 432 depends on ARCH_LPC32XX 433 select WATCHDOG_CORE 434 help 435 Say Y here if to include support for the watchdog timer 436 in the LPC32XX processor. 437 This driver can be built as a module by choosing M. The module 438 will be called pnx4008_wdt. 439 440 Say N if you are unsure. 441 442config IOP_WATCHDOG 443 tristate "IOP Watchdog" 444 depends on ARCH_IOP13XX 445 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X) 446 help 447 Say Y here if to include support for the watchdog timer 448 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can 449 be built as a module by choosing M. The module will 450 be called iop_wdt. 451 452 Note: The IOP13XX watchdog does an Internal Bus Reset which will 453 affect both cores and the peripherals of the IOP. The ATU-X 454 and/or ATUe configuration registers will remain intact, but if 455 operating as an Root Complex and/or Central Resource, the PCI-X 456 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER. 457 458config DAVINCI_WATCHDOG 459 tristate "DaVinci watchdog" 460 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST 461 select WATCHDOG_CORE 462 help 463 Say Y here if to include support for the watchdog timer 464 in the DaVinci DM644x/DM646x or Keystone processors. 465 To compile this driver as a module, choose M here: the 466 module will be called davinci_wdt. 467 468 NOTE: once enabled, this timer cannot be disabled. 469 Say N if you are unsure. 470 471config ORION_WATCHDOG 472 tristate "Orion watchdog" 473 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110) 474 depends on ARM 475 select WATCHDOG_CORE 476 help 477 Say Y here if to include support for the watchdog timer 478 in the Marvell Orion5x and Kirkwood ARM SoCs. 479 To compile this driver as a module, choose M here: the 480 module will be called orion_wdt. 481 482config RN5T618_WATCHDOG 483 tristate "Ricoh RN5T618 watchdog" 484 depends on MFD_RN5T618 || COMPILE_TEST 485 select WATCHDOG_CORE 486 help 487 If you say yes here you get support for watchdog on the Ricoh 488 RN5T618 PMIC. 489 490 This driver can also be built as a module. If so, the module 491 will be called rn5t618_wdt. 492 493config SUNXI_WATCHDOG 494 tristate "Allwinner SoCs watchdog support" 495 depends on ARCH_SUNXI || COMPILE_TEST 496 select WATCHDOG_CORE 497 help 498 Say Y here to include support for the watchdog timer 499 in Allwinner SoCs. 500 To compile this driver as a module, choose M here: the 501 module will be called sunxi_wdt. 502 503config COH901327_WATCHDOG 504 bool "ST-Ericsson COH 901 327 watchdog" 505 depends on ARCH_U300 || (ARM && COMPILE_TEST) 506 default y if MACH_U300 507 select WATCHDOG_CORE 508 help 509 Say Y here to include Watchdog timer support for the 510 watchdog embedded into the ST-Ericsson U300 series platforms. 511 This watchdog is used to reset the system and thus cannot be 512 compiled as a module. 513 514config TWL4030_WATCHDOG 515 tristate "TWL4030 Watchdog" 516 depends on TWL4030_CORE 517 select WATCHDOG_CORE 518 help 519 Support for TI TWL4030 watchdog. Say 'Y' here to enable the 520 watchdog timer support for TWL4030 chips. 521 522config STMP3XXX_RTC_WATCHDOG 523 tristate "Freescale STMP3XXX & i.MX23/28 watchdog" 524 depends on RTC_DRV_STMP || COMPILE_TEST 525 select WATCHDOG_CORE 526 help 527 Say Y here to include support for the watchdog timer inside 528 the RTC for the STMP37XX/378X or i.MX23/28 SoC. 529 To compile this driver as a module, choose M here: the 530 module will be called stmp3xxx_rtc_wdt. 531 532config NUC900_WATCHDOG 533 tristate "Nuvoton NUC900 watchdog" 534 depends on ARCH_W90X900 || COMPILE_TEST 535 help 536 Say Y here if to include support for the watchdog timer 537 for the Nuvoton NUC900 series SoCs. 538 To compile this driver as a module, choose M here: the 539 module will be called nuc900_wdt. 540 541config TS4800_WATCHDOG 542 tristate "TS-4800 Watchdog" 543 depends on HAS_IOMEM && OF 544 depends on SOC_IMX51 || COMPILE_TEST 545 select WATCHDOG_CORE 546 select MFD_SYSCON 547 help 548 Technologic Systems TS-4800 has watchdog timer implemented in 549 an external FPGA. Say Y here if you want to support for the 550 watchdog timer on TS-4800 board. 551 552config TS72XX_WATCHDOG 553 tristate "TS-72XX SBC Watchdog" 554 depends on MACH_TS72XX || COMPILE_TEST 555 help 556 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have 557 watchdog timer implemented in a external CPLD chip. Say Y here 558 if you want to support for the watchdog timer on TS-72XX boards. 559 560 To compile this driver as a module, choose M here: the 561 module will be called ts72xx_wdt. 562 563config MAX63XX_WATCHDOG 564 tristate "Max63xx watchdog" 565 depends on HAS_IOMEM 566 select WATCHDOG_CORE 567 help 568 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer. 569 570config MAX77620_WATCHDOG 571 tristate "Maxim Max77620 Watchdog Timer" 572 depends on MFD_MAX77620 || COMPILE_TEST 573 help 574 This is the driver for the Max77620 watchdog timer. 575 Say 'Y' here to enable the watchdog timer support for 576 MAX77620 chips. To compile this driver as a module, 577 choose M here: the module will be called max77620_wdt. 578 579config IMX2_WDT 580 tristate "IMX2+ Watchdog" 581 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST 582 select REGMAP_MMIO 583 select WATCHDOG_CORE 584 help 585 This is the driver for the hardware watchdog 586 on the Freescale IMX2 and later processors. 587 If you have one of these processors and wish to have 588 watchdog support enabled, say Y, otherwise say N. 589 590 To compile this driver as a module, choose M here: the 591 module will be called imx2_wdt. 592 593config UX500_WATCHDOG 594 tristate "ST-Ericsson Ux500 watchdog" 595 depends on MFD_DB8500_PRCMU 596 select WATCHDOG_CORE 597 default y 598 help 599 Say Y here to include Watchdog timer support for the watchdog 600 existing in the prcmu of ST-Ericsson Ux500 series platforms. 601 602 To compile this driver as a module, choose M here: the 603 module will be called ux500_wdt. 604 605config RETU_WATCHDOG 606 tristate "Retu watchdog" 607 depends on MFD_RETU 608 select WATCHDOG_CORE 609 help 610 Retu watchdog driver for Nokia Internet Tablets (770, N800, 611 N810). At least on N800 the watchdog cannot be disabled, so 612 this driver is essential and you should enable it. 613 614 To compile this driver as a module, choose M here: the 615 module will be called retu_wdt. 616 617config MOXART_WDT 618 tristate "MOXART watchdog" 619 depends on ARCH_MOXART || COMPILE_TEST 620 help 621 Say Y here to include Watchdog timer support for the watchdog 622 existing on the MOXA ART SoC series platforms. 623 624 To compile this driver as a module, choose M here: the 625 module will be called moxart_wdt. 626 627config SIRFSOC_WATCHDOG 628 tristate "SiRFSOC watchdog" 629 depends on ARCH_SIRF || COMPILE_TEST 630 select WATCHDOG_CORE 631 default y 632 help 633 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When 634 the watchdog triggers the system will be reset. 635 636config ST_LPC_WATCHDOG 637 tristate "STMicroelectronics LPC Watchdog" 638 depends on ARCH_STI || COMPILE_TEST 639 depends on OF 640 select WATCHDOG_CORE 641 help 642 Say Y here to include STMicroelectronics Low Power Controller 643 (LPC) based Watchdog timer support. 644 645 To compile this driver as a module, choose M here: the 646 module will be called st_lpc_wdt. 647 648config TEGRA_WATCHDOG 649 tristate "Tegra watchdog" 650 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM 651 select WATCHDOG_CORE 652 help 653 Say Y here to include support for the watchdog timer 654 embedded in NVIDIA Tegra SoCs. 655 656 To compile this driver as a module, choose M here: the 657 module will be called tegra_wdt. 658 659config QCOM_WDT 660 tristate "QCOM watchdog" 661 depends on HAS_IOMEM 662 depends on ARCH_QCOM || COMPILE_TEST 663 select WATCHDOG_CORE 664 help 665 Say Y here to include Watchdog timer support for the watchdog found 666 on QCOM chipsets. Currently supported targets are the MSM8960, 667 APQ8064, and IPQ8064. 668 669 To compile this driver as a module, choose M here: the 670 module will be called qcom_wdt. 671 672config MESON_GXBB_WATCHDOG 673 tristate "Amlogic Meson GXBB SoCs watchdog support" 674 depends on ARCH_MESON || COMPILE_TEST 675 select WATCHDOG_CORE 676 help 677 Say Y here to include support for the watchdog timer 678 in Amlogic Meson GXBB SoCs. 679 To compile this driver as a module, choose M here: the 680 module will be called meson_gxbb_wdt. 681 682config MESON_WATCHDOG 683 tristate "Amlogic Meson SoCs watchdog support" 684 depends on ARCH_MESON || COMPILE_TEST 685 select WATCHDOG_CORE 686 help 687 Say Y here to include support for the watchdog timer 688 in Amlogic Meson SoCs. 689 To compile this driver as a module, choose M here: the 690 module will be called meson_wdt. 691 692config MEDIATEK_WATCHDOG 693 tristate "Mediatek SoCs watchdog support" 694 depends on ARCH_MEDIATEK || COMPILE_TEST 695 select WATCHDOG_CORE 696 help 697 Say Y here to include support for the watchdog timer 698 in Mediatek SoCs. 699 To compile this driver as a module, choose M here: the 700 module will be called mtk_wdt. 701 702config DIGICOLOR_WATCHDOG 703 tristate "Conexant Digicolor SoCs watchdog support" 704 depends on ARCH_DIGICOLOR || COMPILE_TEST 705 select WATCHDOG_CORE 706 help 707 Say Y here to include support for the watchdog timer 708 in Conexant Digicolor SoCs. 709 To compile this driver as a module, choose M here: the 710 module will be called digicolor_wdt. 711 712config LPC18XX_WATCHDOG 713 tristate "LPC18xx/43xx Watchdog" 714 depends on ARCH_LPC18XX || COMPILE_TEST 715 depends on HAS_IOMEM 716 select WATCHDOG_CORE 717 help 718 Say Y here if to include support for the watchdog timer 719 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx 720 processors. 721 To compile this driver as a module, choose M here: the 722 module will be called lpc18xx_wdt. 723 724config ATLAS7_WATCHDOG 725 tristate "CSRatlas7 watchdog" 726 depends on ARCH_ATLAS7 || COMPILE_TEST 727 help 728 Say Y here to include Watchdog timer support for the watchdog 729 existing on the CSRatlas7 series platforms. 730 731 To compile this driver as a module, choose M here: the 732 module will be called atlas7_wdt. 733 734config RENESAS_WDT 735 tristate "Renesas WDT Watchdog" 736 depends on ARCH_RENESAS || COMPILE_TEST 737 select WATCHDOG_CORE 738 help 739 This driver adds watchdog support for the integrated watchdogs in the 740 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT). 741 742config RENESAS_RZAWDT 743 tristate "Renesas RZ/A WDT Watchdog" 744 depends on ARCH_RENESAS || COMPILE_TEST 745 select WATCHDOG_CORE 746 help 747 This driver adds watchdog support for the integrated watchdogs in the 748 Renesas RZ/A SoCs. These watchdogs can be used to reset a system. 749 750config ASPEED_WATCHDOG 751 tristate "Aspeed 2400 watchdog support" 752 depends on ARCH_ASPEED || COMPILE_TEST 753 select WATCHDOG_CORE 754 help 755 Say Y here to include support for the watchdog timer 756 in Apseed BMC SoCs. 757 758 This driver is required to reboot the SoC. 759 760 To compile this driver as a module, choose M here: the 761 module will be called aspeed_wdt. 762 763config ZX2967_WATCHDOG 764 tristate "ZTE zx2967 SoCs watchdog support" 765 depends on ARCH_ZX 766 select WATCHDOG_CORE 767 help 768 Say Y here to include support for the watchdog timer 769 in ZTE zx2967 SoCs. 770 To compile this driver as a module, choose M here: the 771 module will be called zx2967_wdt. 772 773config STM32_WATCHDOG 774 tristate "STM32 Independent WatchDoG (IWDG) support" 775 depends on ARCH_STM32 776 select WATCHDOG_CORE 777 default y 778 help 779 Say Y here to include support for the watchdog timer 780 in stm32 SoCs. 781 782 To compile this driver as a module, choose M here: the 783 module will be called stm32_iwdg. 784 785config UNIPHIER_WATCHDOG 786 tristate "UniPhier watchdog support" 787 depends on ARCH_UNIPHIER || COMPILE_TEST 788 depends on OF && MFD_SYSCON 789 select WATCHDOG_CORE 790 help 791 Say Y here to include support watchdog timer embedded 792 into the UniPhier system. 793 794 To compile this driver as a module, choose M here: the 795 module will be called uniphier_wdt. 796 797# AVR32 Architecture 798 799config AT32AP700X_WDT 800 tristate "AT32AP700x watchdog" 801 depends on CPU_AT32AP700X || COMPILE_TEST 802 help 803 Watchdog timer embedded into AT32AP700x devices. This will reboot 804 your system when the timeout is reached. 805 806# BLACKFIN Architecture 807 808config BFIN_WDT 809 tristate "Blackfin On-Chip Watchdog Timer" 810 depends on BLACKFIN 811 ---help--- 812 If you say yes here you will get support for the Blackfin On-Chip 813 Watchdog Timer. If you have one of these processors and wish to 814 have watchdog support enabled, say Y, otherwise say N. 815 816 To compile this driver as a module, choose M here: the 817 module will be called bfin_wdt. 818 819# CRIS Architecture 820 821# FRV Architecture 822 823# X86 (i386 + ia64 + x86_64) Architecture 824 825config ACQUIRE_WDT 826 tristate "Acquire SBC Watchdog Timer" 827 depends on X86 828 ---help--- 829 This is the driver for the hardware watchdog on Single Board 830 Computers produced by Acquire Inc (and others). This watchdog 831 simply watches your kernel to make sure it doesn't freeze, and if 832 it does, it reboots your computer after a certain amount of time. 833 834 To compile this driver as a module, choose M here: the 835 module will be called acquirewdt. 836 837 Most people will say N. 838 839config ADVANTECH_WDT 840 tristate "Advantech SBC Watchdog Timer" 841 depends on X86 842 help 843 If you are configuring a Linux kernel for the Advantech single-board 844 computer, say `Y' here to support its built-in watchdog timer 845 feature. More information can be found at 846 <http://www.advantech.com.tw/products/> 847 848config ALIM1535_WDT 849 tristate "ALi M1535 PMU Watchdog Timer" 850 depends on X86 && PCI 851 ---help--- 852 This is the driver for the hardware watchdog on the ALi M1535 PMU. 853 854 To compile this driver as a module, choose M here: the 855 module will be called alim1535_wdt. 856 857 Most people will say N. 858 859config ALIM7101_WDT 860 tristate "ALi M7101 PMU Computer Watchdog" 861 depends on PCI 862 help 863 This is the driver for the hardware watchdog on the ALi M7101 PMU 864 as used in the x86 Cobalt servers and also found in some 865 SPARC Netra servers too. 866 867 To compile this driver as a module, choose M here: the 868 module will be called alim7101_wdt. 869 870 Most people will say N. 871 872config EBC_C384_WDT 873 tristate "WinSystems EBC-C384 Watchdog Timer" 874 depends on X86 && ISA_BUS_API 875 select WATCHDOG_CORE 876 help 877 Enables watchdog timer support for the watchdog timer on the 878 WinSystems EBC-C384 motherboard. The timeout may be configured via 879 the timeout module parameter. 880 881config F71808E_WDT 882 tristate "Fintek F718xx, F818xx Super I/O Watchdog" 883 depends on X86 884 help 885 This is the driver for the hardware watchdog on the Fintek F71808E, 886 F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866 887 Super I/O controllers. 888 889 You can compile this driver directly into the kernel, or use 890 it as a module. The module will be called f71808e_wdt. 891 892config SP5100_TCO 893 tristate "AMD/ATI SP5100 TCO Timer/Watchdog" 894 depends on X86 && PCI 895 ---help--- 896 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO 897 (Total Cost of Ownership) timer is a watchdog timer that will reboot 898 the machine after its expiration. The expiration time can be 899 configured with the "heartbeat" parameter. 900 901 To compile this driver as a module, choose M here: the 902 module will be called sp5100_tco. 903 904config GEODE_WDT 905 tristate "AMD Geode CS5535/CS5536 Watchdog" 906 depends on CS5535_MFGPT 907 help 908 This driver enables a watchdog capability built into the 909 CS5535/CS5536 companion chips for the AMD Geode GX and LX 910 processors. This watchdog watches your kernel to make sure 911 it doesn't freeze, and if it does, it reboots your computer after 912 a certain amount of time. 913 914 You can compile this driver directly into the kernel, or use 915 it as a module. The module will be called geodewdt. 916 917config SC520_WDT 918 tristate "AMD Elan SC520 processor Watchdog" 919 depends on MELAN || COMPILE_TEST 920 help 921 This is the driver for the hardware watchdog built in to the 922 AMD "Elan" SC520 microcomputer commonly used in embedded systems. 923 This watchdog simply watches your kernel to make sure it doesn't 924 freeze, and if it does, it reboots your computer after a certain 925 amount of time. 926 927 You can compile this driver directly into the kernel, or use 928 it as a module. The module will be called sc520_wdt. 929 930config SBC_FITPC2_WATCHDOG 931 tristate "Compulab SBC-FITPC2 watchdog" 932 depends on X86 933 ---help--- 934 This is the driver for the built-in watchdog timer on the fit-PC2, 935 fit-PC2i, CM-iAM single-board computers made by Compulab. 936 937 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux. 938 When "Watchdog Timer Value" enabled one can set 31-255 s operational range. 939 940 Entering BIOS setup temporary disables watchdog operation regardless to current state, 941 so system will not be restarted while user in BIOS setup. 942 943 Once watchdog was enabled the system will be restarted every 944 "Watchdog Timer Value" period, so to prevent it user can restart or 945 disable the watchdog. 946 947 To compile this driver as a module, choose M here: the 948 module will be called sbc_fitpc2_wdt. 949 950 Most people will say N. 951 952config EUROTECH_WDT 953 tristate "Eurotech CPU-1220/1410 Watchdog Timer" 954 depends on X86 955 help 956 Enable support for the watchdog timer on the Eurotech CPU-1220 and 957 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product 958 information are at <http://www.eurotech.it/>. 959 960config IB700_WDT 961 tristate "IB700 SBC Watchdog Timer" 962 depends on X86 963 ---help--- 964 This is the driver for the hardware watchdog on the IB700 Single 965 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog 966 simply watches your kernel to make sure it doesn't freeze, and if 967 it does, it reboots your computer after a certain amount of time. 968 969 This driver is like the WDT501 driver but for slightly different hardware. 970 971 To compile this driver as a module, choose M here: the 972 module will be called ib700wdt. 973 974 Most people will say N. 975 976config IBMASR 977 tristate "IBM Automatic Server Restart" 978 depends on X86 979 help 980 This is the driver for the IBM Automatic Server Restart watchdog 981 timer built-in into some eServer xSeries machines. 982 983 To compile this driver as a module, choose M here: the 984 module will be called ibmasr. 985 986config WAFER_WDT 987 tristate "ICP Single Board Computer Watchdog Timer" 988 depends on X86 989 help 990 This is a driver for the hardware watchdog on the ICP Single 991 Board Computer. This driver is working on (at least) the following 992 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782. 993 994 To compile this driver as a module, choose M here: the 995 module will be called wafer5823wdt. 996 997config I6300ESB_WDT 998 tristate "Intel 6300ESB Timer/Watchdog" 999 depends on PCI 1000 ---help--- 1001 Hardware driver for the watchdog timer built into the Intel 1002 6300ESB controller hub. 1003 1004 To compile this driver as a module, choose M here: the 1005 module will be called i6300esb. 1006 1007config IE6XX_WDT 1008 tristate "Intel Atom E6xx Watchdog" 1009 depends on X86 && PCI 1010 select WATCHDOG_CORE 1011 select MFD_CORE 1012 select LPC_SCH 1013 ---help--- 1014 Hardware driver for the watchdog timer built into the Intel 1015 Atom E6XX (TunnelCreek) processor. 1016 1017 To compile this driver as a module, choose M here: the 1018 module will be called ie6xx_wdt. 1019 1020config INTEL_SCU_WATCHDOG 1021 bool "Intel SCU Watchdog for Mobile Platforms" 1022 depends on X86_INTEL_MID 1023 ---help--- 1024 Hardware driver for the watchdog time built into the Intel SCU 1025 for Intel Mobile Platforms. 1026 1027 To compile this driver as a module, choose M here. 1028 1029config INTEL_MID_WATCHDOG 1030 tristate "Intel MID Watchdog Timer" 1031 depends on X86_INTEL_MID 1032 select WATCHDOG_CORE 1033 ---help--- 1034 Watchdog timer driver built into the Intel SCU for Intel MID 1035 Platforms. 1036 1037 This driver currently supports only the watchdog evolution 1038 implementation in SCU, available for Merrifield generation. 1039 1040 To compile this driver as a module, choose M here. 1041 1042config ITCO_WDT 1043 tristate "Intel TCO Timer/Watchdog" 1044 depends on (X86 || IA64) && PCI 1045 select WATCHDOG_CORE 1046 depends on I2C || I2C=n 1047 select LPC_ICH if !EXPERT 1048 select I2C_I801 if !EXPERT && I2C 1049 ---help--- 1050 Hardware driver for the intel TCO timer based watchdog devices. 1051 These drivers are included in the Intel 82801 I/O Controller 1052 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB 1053 controller hub. 1054 1055 The TCO (Total Cost of Ownership) timer is a watchdog timer 1056 that will reboot the machine after its second expiration. The 1057 expiration time can be configured with the "heartbeat" parameter. 1058 1059 On some motherboards the driver may fail to reset the chipset's 1060 NO_REBOOT flag which prevents the watchdog from rebooting the 1061 machine. If this is the case you will get a kernel message like 1062 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1063 1064 To compile this driver as a module, choose M here: the 1065 module will be called iTCO_wdt. 1066 1067config ITCO_VENDOR_SUPPORT 1068 bool "Intel TCO Timer/Watchdog Specific Vendor Support" 1069 depends on ITCO_WDT 1070 ---help--- 1071 Add vendor specific support to the intel TCO timer based watchdog 1072 devices. At this moment we only have additional support for some 1073 SuperMicro Inc. motherboards. 1074 1075config IT8712F_WDT 1076 tristate "IT8712F (Smart Guardian) Watchdog Timer" 1077 depends on X86 1078 ---help--- 1079 This is the driver for the built-in watchdog timer on the IT8712F 1080 Super I/0 chipset used on many motherboards. 1081 1082 If the driver does not work, then make sure that the game port in 1083 the BIOS is enabled. 1084 1085 To compile this driver as a module, choose M here: the 1086 module will be called it8712f_wdt. 1087 1088config IT87_WDT 1089 tristate "IT87 Watchdog Timer" 1090 depends on X86 1091 select WATCHDOG_CORE 1092 ---help--- 1093 This is the driver for the hardware watchdog on the ITE IT8607, 1094 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702, 1095 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and 1096 IT8783 Super I/O chips. 1097 1098 This watchdog simply watches your kernel to make sure it doesn't 1099 freeze, and if it does, it reboots your computer after a certain 1100 amount of time. 1101 1102 To compile this driver as a module, choose M here: the module will 1103 be called it87_wdt. 1104 1105config HP_WATCHDOG 1106 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer" 1107 depends on X86 && PCI 1108 help 1109 A software monitoring watchdog and NMI sourcing driver. This driver 1110 will detect lockups and provide a stack trace. This is a driver that 1111 will only load on an HP ProLiant system with a minimum of iLO2 support. 1112 To compile this driver as a module, choose M here: the module will be 1113 called hpwdt. 1114 1115config KEMPLD_WDT 1116 tristate "Kontron COM Watchdog Timer" 1117 depends on MFD_KEMPLD 1118 select WATCHDOG_CORE 1119 help 1120 Support for the PLD watchdog on some Kontron ETX and COMexpress 1121 (ETXexpress) modules 1122 1123 This driver can also be built as a module. If so, the module will be 1124 called kempld_wdt. 1125 1126config HPWDT_NMI_DECODING 1127 bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer" 1128 depends on HP_WATCHDOG 1129 default y 1130 help 1131 When an NMI occurs this feature will make the necessary BIOS calls to 1132 log the cause of the NMI. 1133 1134config SC1200_WDT 1135 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" 1136 depends on X86 1137 help 1138 This is a driver for National Semiconductor PC87307/PC97307 hardware 1139 watchdog cards as found on the SC1200. This watchdog is mainly used 1140 for power management purposes and can be used to power down the device 1141 during inactivity periods (includes interrupt activity monitoring). 1142 1143 To compile this driver as a module, choose M here: the 1144 module will be called sc1200wdt. 1145 1146 Most people will say N. 1147 1148config SCx200_WDT 1149 tristate "National Semiconductor SCx200 Watchdog" 1150 depends on SCx200 && PCI 1151 help 1152 Enable the built-in watchdog timer support on the National 1153 Semiconductor SCx200 processors. 1154 1155 If compiled as a module, it will be called scx200_wdt. 1156 1157config PC87413_WDT 1158 tristate "NS PC87413 watchdog" 1159 depends on X86 1160 ---help--- 1161 This is the driver for the hardware watchdog on the PC87413 chipset 1162 This watchdog simply watches your kernel to make sure it doesn't 1163 freeze, and if it does, it reboots your computer after a certain 1164 amount of time. 1165 1166 To compile this driver as a module, choose M here: the 1167 module will be called pc87413_wdt. 1168 1169 Most people will say N. 1170 1171config NV_TCO 1172 tristate "nVidia TCO Timer/Watchdog" 1173 depends on X86 && PCI 1174 ---help--- 1175 Hardware driver for the TCO timer built into the nVidia Hub family 1176 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a 1177 watchdog timer that will reboot the machine after its second 1178 expiration. The expiration time can be configured with the 1179 "heartbeat" parameter. 1180 1181 On some motherboards the driver may fail to reset the chipset's 1182 NO_REBOOT flag which prevents the watchdog from rebooting the 1183 machine. If this is the case you will get a kernel message like 1184 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1185 1186 To compile this driver as a module, choose M here: the 1187 module will be called nv_tco. 1188 1189config RDC321X_WDT 1190 tristate "RDC R-321x SoC watchdog" 1191 depends on X86_RDC321X || COMPILE_TEST 1192 depends on PCI 1193 help 1194 This is the driver for the built in hardware watchdog 1195 in the RDC R-321x SoC. 1196 1197 To compile this driver as a module, choose M here: the 1198 module will be called rdc321x_wdt. 1199 1200config 60XX_WDT 1201 tristate "SBC-60XX Watchdog Timer" 1202 depends on X86 1203 help 1204 This driver can be used with the watchdog timer found on some 1205 single board computers, namely the 6010 PII based computer. 1206 It may well work with other cards. It reads port 0x443 to enable 1207 and re-set the watchdog timer, and reads port 0x45 to disable 1208 the watchdog. If you have a card that behave in similar ways, 1209 you can probably make this driver work with your card as well. 1210 1211 You can compile this driver directly into the kernel, or use 1212 it as a module. The module will be called sbc60xxwdt. 1213 1214config SBC8360_WDT 1215 tristate "SBC8360 Watchdog Timer" 1216 depends on X86_32 1217 ---help--- 1218 1219 This is the driver for the hardware watchdog on the SBC8360 Single 1220 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com). 1221 1222 To compile this driver as a module, choose M here: the 1223 module will be called sbc8360. 1224 1225 Most people will say N. 1226 1227config SBC7240_WDT 1228 tristate "SBC Nano 7240 Watchdog Timer" 1229 depends on X86_32 && !UML 1230 ---help--- 1231 This is the driver for the hardware watchdog found on the IEI 1232 single board computers EPIC Nano 7240 (and likely others). This 1233 watchdog simply watches your kernel to make sure it doesn't freeze, 1234 and if it does, it reboots your computer after a certain amount of 1235 time. 1236 1237 To compile this driver as a module, choose M here: the 1238 module will be called sbc7240_wdt. 1239 1240config CPU5_WDT 1241 tristate "SMA CPU5 Watchdog" 1242 depends on X86 1243 ---help--- 1244 TBD. 1245 To compile this driver as a module, choose M here: the 1246 module will be called cpu5wdt. 1247 1248config SMSC_SCH311X_WDT 1249 tristate "SMSC SCH311X Watchdog Timer" 1250 depends on X86 1251 ---help--- 1252 This is the driver for the hardware watchdog timer on the 1253 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset 1254 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple 1255 serial ports). 1256 1257 To compile this driver as a module, choose M here: the 1258 module will be called sch311x_wdt. 1259 1260config SMSC37B787_WDT 1261 tristate "Winbond SMsC37B787 Watchdog Timer" 1262 depends on X86 1263 ---help--- 1264 This is the driver for the hardware watchdog component on the 1265 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard 1266 from Vision Systems and maybe others. 1267 1268 This watchdog simply watches your kernel to make sure it doesn't 1269 freeze, and if it does, it reboots your computer after a certain 1270 amount of time. 1271 1272 Usually a userspace daemon will notify the kernel WDT driver that 1273 userspace is still alive, at regular intervals. 1274 1275 To compile this driver as a module, choose M here: the 1276 module will be called smsc37b787_wdt. 1277 1278 Most people will say N. 1279 1280config VIA_WDT 1281 tristate "VIA Watchdog Timer" 1282 depends on X86 && PCI 1283 select WATCHDOG_CORE 1284 ---help--- 1285 This is the driver for the hardware watchdog timer on VIA 1286 southbridge chipset CX700, VX800/VX820 or VX855/VX875. 1287 1288 To compile this driver as a module, choose M here; the module 1289 will be called via_wdt. 1290 1291 Most people will say N. 1292 1293config W83627HF_WDT 1294 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles" 1295 depends on X86 1296 select WATCHDOG_CORE 1297 ---help--- 1298 This is the driver for the hardware watchdog on the following 1299 Super I/O chips. 1300 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG 1301 W83637HF 1302 W83667HG/HG-B 1303 W83687THF 1304 W83697HF 1305 W83697UG 1306 NCT6775 1307 NCT6776 1308 NCT6779 1309 NCT6791 1310 NCT6792 1311 NCT6102D/04D/06D 1312 1313 This watchdog simply watches your kernel to make sure it doesn't 1314 freeze, and if it does, it reboots your computer after a certain 1315 amount of time. 1316 1317 To compile this driver as a module, choose M here: the 1318 module will be called w83627hf_wdt. 1319 1320 Most people will say N. 1321 1322config W83877F_WDT 1323 tristate "W83877F (EMACS) Watchdog Timer" 1324 depends on X86 1325 ---help--- 1326 This is the driver for the hardware watchdog on the W83877F chipset 1327 as used in EMACS PC-104 motherboards (and likely others). This 1328 watchdog simply watches your kernel to make sure it doesn't freeze, 1329 and if it does, it reboots your computer after a certain amount of 1330 time. 1331 1332 To compile this driver as a module, choose M here: the 1333 module will be called w83877f_wdt. 1334 1335 Most people will say N. 1336 1337config W83977F_WDT 1338 tristate "W83977F (PCM-5335) Watchdog Timer" 1339 depends on X86 1340 ---help--- 1341 This is the driver for the hardware watchdog on the W83977F I/O chip 1342 as used in AAEON's PCM-5335 SBC (and likely others). This 1343 watchdog simply watches your kernel to make sure it doesn't freeze, 1344 and if it does, it reboots your computer after a certain amount of 1345 time. 1346 1347 To compile this driver as a module, choose M here: the 1348 module will be called w83977f_wdt. 1349 1350config MACHZ_WDT 1351 tristate "ZF MachZ Watchdog" 1352 depends on X86 1353 ---help--- 1354 If you are using a ZF Micro MachZ processor, say Y here, otherwise 1355 N. This is the driver for the watchdog timer built-in on that 1356 processor using ZF-Logic interface. This watchdog simply watches 1357 your kernel to make sure it doesn't freeze, and if it does, it 1358 reboots your computer after a certain amount of time. 1359 1360 To compile this driver as a module, choose M here: the 1361 module will be called machzwd. 1362 1363config SBC_EPX_C3_WATCHDOG 1364 tristate "Winsystems SBC EPX-C3 watchdog" 1365 depends on X86 1366 ---help--- 1367 This is the driver for the built-in watchdog timer on the EPX-C3 1368 Single-board computer made by Winsystems, Inc. 1369 1370 *Note*: This hardware watchdog is not probeable and thus there 1371 is no way to know if writing to its IO address will corrupt 1372 your system or have any real effect. The only way to be sure 1373 that this driver does what you want is to make sure you 1374 are running it on an EPX-C3 from Winsystems with the watchdog 1375 timer at IO address 0x1ee and 0x1ef. It will write to both those 1376 IO ports. Basically, the assumption is made that if you compile 1377 this driver into your kernel and/or load it as a module, that you 1378 know what you are doing and that you are in fact running on an 1379 EPX-C3 board! 1380 1381 To compile this driver as a module, choose M here: the 1382 module will be called sbc_epx_c3. 1383 1384config INTEL_MEI_WDT 1385 tristate "Intel MEI iAMT Watchdog" 1386 depends on INTEL_MEI && X86 1387 select WATCHDOG_CORE 1388 ---help--- 1389 A device driver for the Intel MEI iAMT watchdog. 1390 1391 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog. 1392 Whenever the OS hangs or crashes, iAMT will send an event 1393 to any subscriber to this event. The watchdog doesn't reset the 1394 the platform. 1395 1396 To compile this driver as a module, choose M here: 1397 the module will be called mei_wdt. 1398 1399config NI903X_WDT 1400 tristate "NI 903x/913x Watchdog" 1401 depends on X86 && ACPI 1402 select WATCHDOG_CORE 1403 ---help--- 1404 This is the driver for the watchdog timer on the National Instruments 1405 903x/913x real-time controllers. 1406 1407 To compile this driver as a module, choose M here: the module will be 1408 called ni903x_wdt. 1409 1410config NIC7018_WDT 1411 tristate "NIC7018 Watchdog" 1412 depends on X86 && ACPI 1413 select WATCHDOG_CORE 1414 ---help--- 1415 Support for National Instruments NIC7018 Watchdog. 1416 1417 To compile this driver as a module, choose M here: the module will be 1418 called nic7018_wdt. 1419 1420# M32R Architecture 1421 1422# M68K Architecture 1423 1424config M54xx_WATCHDOG 1425 tristate "MCF54xx watchdog support" 1426 depends on M548x 1427 help 1428 To compile this driver as a module, choose M here: the 1429 module will be called m54xx_wdt. 1430 1431# MicroBlaze Architecture 1432 1433# MIPS Architecture 1434 1435config ATH79_WDT 1436 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog" 1437 depends on ATH79 || (ARM && COMPILE_TEST) 1438 help 1439 Hardware driver for the built-in watchdog timer on the Atheros 1440 AR71XX/AR724X/AR913X SoCs. 1441 1442config BCM47XX_WDT 1443 tristate "Broadcom BCM47xx Watchdog Timer" 1444 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST 1445 select WATCHDOG_CORE 1446 help 1447 Hardware driver for the Broadcom BCM47xx Watchdog Timer. 1448 1449config RC32434_WDT 1450 tristate "IDT RC32434 SoC Watchdog Timer" 1451 depends on MIKROTIK_RB532 1452 help 1453 Hardware driver for the IDT RC32434 SoC built-in 1454 watchdog timer. 1455 1456 To compile this driver as a module, choose M here: the 1457 module will be called rc32434_wdt. 1458 1459config INDYDOG 1460 tristate "Indy/I2 Hardware Watchdog" 1461 depends on SGI_HAS_INDYDOG || (MIPS && COMPILE_TEST) 1462 help 1463 Hardware driver for the Indy's/I2's watchdog. This is a 1464 watchdog timer that will reboot the machine after a 60 second 1465 timer expired and no process has written to /dev/watchdog during 1466 that time. 1467 1468config JZ4740_WDT 1469 tristate "Ingenic jz4740 SoC hardware watchdog" 1470 depends on MACH_JZ4740 || MACH_JZ4780 1471 select WATCHDOG_CORE 1472 help 1473 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. 1474 1475config WDT_MTX1 1476 tristate "MTX-1 Hardware Watchdog" 1477 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST) 1478 help 1479 Hardware driver for the MTX-1 boards. This is a watchdog timer that 1480 will reboot the machine after a 100 seconds timer expired. 1481 1482config PNX833X_WDT 1483 tristate "PNX833x Hardware Watchdog" 1484 depends on SOC_PNX8335 1485 depends on BROKEN 1486 help 1487 Hardware driver for the PNX833x's watchdog. This is a 1488 watchdog timer that will reboot the machine after a programmable 1489 timer has expired and no process has written to /dev/watchdog during 1490 that time. 1491 1492config SIBYTE_WDOG 1493 tristate "Sibyte SoC hardware watchdog" 1494 depends on CPU_SB1 || (MIPS && COMPILE_TEST) 1495 help 1496 Watchdog driver for the built in watchdog hardware in Sibyte 1497 SoC processors. There are apparently two watchdog timers 1498 on such processors; this driver supports only the first one, 1499 because currently Linux only supports exporting one watchdog 1500 to userspace. 1501 1502 To compile this driver as a loadable module, choose M here. 1503 The module will be called sb_wdog. 1504 1505config AR7_WDT 1506 tristate "TI AR7 Watchdog Timer" 1507 depends on AR7 || (MIPS && COMPILE_TEST) 1508 help 1509 Hardware driver for the TI AR7 Watchdog Timer. 1510 1511config TXX9_WDT 1512 tristate "Toshiba TXx9 Watchdog Timer" 1513 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST) 1514 select WATCHDOG_CORE 1515 help 1516 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. 1517 1518config OCTEON_WDT 1519 tristate "Cavium OCTEON SOC family Watchdog Timer" 1520 depends on CAVIUM_OCTEON_SOC 1521 default y 1522 select WATCHDOG_CORE 1523 select EXPORT_UASM if OCTEON_WDT = m 1524 help 1525 Hardware driver for OCTEON's on chip watchdog timer. 1526 Enables the watchdog for all cores running Linux. It 1527 installs a NMI handler and pokes the watchdog based on an 1528 interrupt. On first expiration of the watchdog, the 1529 interrupt handler pokes it. The second expiration causes an 1530 NMI that prints a message. The third expiration causes a 1531 global soft reset. 1532 1533 When userspace has /dev/watchdog open, no poking is done 1534 from the first interrupt, it is then only poked when the 1535 device is written. 1536 1537config BCM63XX_WDT 1538 tristate "Broadcom BCM63xx hardware watchdog" 1539 depends on BCM63XX 1540 help 1541 Watchdog driver for the built in watchdog hardware in Broadcom 1542 BCM63xx SoC. 1543 1544 To compile this driver as a loadable module, choose M here. 1545 The module will be called bcm63xx_wdt. 1546 1547config BCM2835_WDT 1548 tristate "Broadcom BCM2835 hardware watchdog" 1549 depends on ARCH_BCM2835 || (OF && COMPILE_TEST) 1550 select WATCHDOG_CORE 1551 help 1552 Watchdog driver for the built in watchdog hardware in Broadcom 1553 BCM2835 SoC. 1554 1555 To compile this driver as a loadable module, choose M here. 1556 The module will be called bcm2835_wdt. 1557 1558config BCM_KONA_WDT 1559 tristate "BCM Kona Watchdog" 1560 depends on ARCH_BCM_MOBILE || COMPILE_TEST 1561 select WATCHDOG_CORE 1562 help 1563 Support for the watchdog timer on the following Broadcom BCM281xx 1564 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and 1565 BCM28155 variants. 1566 1567 Say 'Y' or 'M' here to enable the driver. The module will be called 1568 bcm_kona_wdt. 1569 1570config BCM_KONA_WDT_DEBUG 1571 bool "DEBUGFS support for BCM Kona Watchdog" 1572 depends on BCM_KONA_WDT || COMPILE_TEST 1573 help 1574 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides 1575 access to the driver's internal data structures as well as watchdog 1576 timer hardware registres. 1577 1578 If in doubt, say 'N'. 1579 1580config BCM7038_WDT 1581 tristate "BCM7038 Watchdog" 1582 select WATCHDOG_CORE 1583 depends on HAS_IOMEM 1584 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST 1585 help 1586 Watchdog driver for the built-in hardware in Broadcom 7038 and 1587 later SoCs used in set-top boxes. BCM7038 was made public 1588 during the 2004 CES, and since then, many Broadcom chips use this 1589 watchdog block, including some cable modem chips. 1590 1591config IMGPDC_WDT 1592 tristate "Imagination Technologies PDC Watchdog Timer" 1593 depends on HAS_IOMEM 1594 depends on METAG || MIPS || COMPILE_TEST 1595 select WATCHDOG_CORE 1596 help 1597 Driver for Imagination Technologies PowerDown Controller 1598 Watchdog Timer. 1599 1600 To compile this driver as a loadable module, choose M here. 1601 The module will be called imgpdc_wdt. 1602 1603config LANTIQ_WDT 1604 tristate "Lantiq SoC watchdog" 1605 depends on LANTIQ 1606 help 1607 Hardware driver for the Lantiq SoC Watchdog Timer. 1608 1609config LOONGSON1_WDT 1610 tristate "Loongson1 SoC hardware watchdog" 1611 depends on MACH_LOONGSON32 1612 select WATCHDOG_CORE 1613 help 1614 Hardware driver for the Loongson1 SoC Watchdog Timer. 1615 1616config RALINK_WDT 1617 tristate "Ralink SoC watchdog" 1618 select WATCHDOG_CORE 1619 depends on RALINK 1620 help 1621 Hardware driver for the Ralink SoC Watchdog Timer. 1622 1623config MT7621_WDT 1624 tristate "Mediatek SoC watchdog" 1625 select WATCHDOG_CORE 1626 depends on SOC_MT7620 || SOC_MT7621 1627 help 1628 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer. 1629 1630config PIC32_WDT 1631 tristate "Microchip PIC32 hardware watchdog" 1632 select WATCHDOG_CORE 1633 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1634 help 1635 Watchdog driver for the built in watchdog hardware in a PIC32. 1636 1637 Configuration bits must be set appropriately for the watchdog to be 1638 controlled by this driver. 1639 1640 To compile this driver as a loadable module, choose M here. 1641 The module will be called pic32-wdt. 1642 1643config PIC32_DMT 1644 tristate "Microchip PIC32 Deadman Timer" 1645 select WATCHDOG_CORE 1646 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1647 help 1648 Watchdog driver for PIC32 instruction fetch counting timer. This specific 1649 timer is typically be used in misson critical and safety critical 1650 applications, where any single failure of the software functionality 1651 and sequencing must be detected. 1652 1653 To compile this driver as a loadable module, choose M here. 1654 The module will be called pic32-dmt. 1655 1656# PARISC Architecture 1657 1658# POWERPC Architecture 1659 1660config GEF_WDT 1661 tristate "GE Watchdog Timer" 1662 depends on GE_FPGA 1663 ---help--- 1664 Watchdog timer found in a number of GE single board computers. 1665 1666config MPC5200_WDT 1667 bool "MPC52xx Watchdog Timer" 1668 depends on PPC_MPC52xx || COMPILE_TEST 1669 help 1670 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog. 1671 1672config 8xxx_WDT 1673 tristate "MPC8xxx Platform Watchdog Timer" 1674 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x 1675 select WATCHDOG_CORE 1676 help 1677 This driver is for a SoC level watchdog that exists on some 1678 Freescale PowerPC processors. So far this driver supports: 1679 - MPC8xx watchdogs 1680 - MPC83xx watchdogs 1681 - MPC86xx watchdogs 1682 1683 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead. 1684 1685config MV64X60_WDT 1686 tristate "MV64X60 (Marvell Discovery) Watchdog Timer" 1687 depends on MV64X60 || COMPILE_TEST 1688 1689config PIKA_WDT 1690 tristate "PIKA FPGA Watchdog" 1691 depends on WARP || (PPC64 && COMPILE_TEST) 1692 default y 1693 help 1694 This enables the watchdog in the PIKA FPGA. Currently used on 1695 the Warp platform. 1696 1697config BOOKE_WDT 1698 tristate "PowerPC Book-E Watchdog Timer" 1699 depends on BOOKE || 4xx 1700 select WATCHDOG_CORE 1701 ---help--- 1702 Watchdog driver for PowerPC Book-E chips, such as the Freescale 1703 MPC85xx SOCs and the IBM PowerPC 440. 1704 1705 Please see Documentation/watchdog/watchdog-api.txt for 1706 more information. 1707 1708config BOOKE_WDT_DEFAULT_TIMEOUT 1709 int "PowerPC Book-E Watchdog Timer Default Timeout" 1710 depends on BOOKE_WDT 1711 default 38 if PPC_FSL_BOOK3E 1712 range 0 63 if PPC_FSL_BOOK3E 1713 default 3 if !PPC_FSL_BOOK3E 1714 range 0 3 if !PPC_FSL_BOOK3E 1715 help 1716 Select the default watchdog timer period to be used by the PowerPC 1717 Book-E watchdog driver. A watchdog "event" occurs when the bit 1718 position represented by this number transitions from zero to one. 1719 1720 For Freescale Book-E processors, this is a number between 0 and 63. 1721 For other Book-E processors, this is a number between 0 and 3. 1722 1723 The value can be overridden by the wdt_period command-line parameter. 1724 1725config MEN_A21_WDT 1726 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer" 1727 select WATCHDOG_CORE 1728 depends on GPIOLIB || COMPILE_TEST 1729 help 1730 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards. 1731 1732 The driver can also be built as a module. If so, the module will be 1733 called mena21_wdt. 1734 1735 If unsure select N here. 1736 1737# PPC64 Architecture 1738 1739config WATCHDOG_RTAS 1740 tristate "RTAS watchdog" 1741 depends on PPC_RTAS 1742 help 1743 This driver adds watchdog support for the RTAS watchdog. 1744 1745 To compile this driver as a module, choose M here. The module 1746 will be called wdrtas. 1747 1748# S390 Architecture 1749 1750config DIAG288_WATCHDOG 1751 tristate "System z diag288 Watchdog" 1752 depends on S390 1753 select WATCHDOG_CORE 1754 help 1755 IBM s/390 and zSeries machines running under z/VM 5.1 or later 1756 provide a virtual watchdog timer to their guest that cause a 1757 user define Control Program command to be executed after a 1758 timeout. 1759 LPAR provides a very similar interface. This driver handles 1760 both. 1761 1762 To compile this driver as a module, choose M here. The module 1763 will be called diag288_wdt. 1764 1765# SUPERH (sh + sh64) Architecture 1766 1767config SH_WDT 1768 tristate "SuperH Watchdog" 1769 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST) 1770 select WATCHDOG_CORE 1771 help 1772 This driver adds watchdog support for the integrated watchdog in the 1773 SuperH processors. If you have one of these processors and wish 1774 to have watchdog support enabled, say Y, otherwise say N. 1775 1776 As a side note, saying Y here will automatically boost HZ to 1000 1777 so that the timer has a chance to clear the overflow counter. On 1778 slower systems (such as the SH-2 and SH-3) this will likely yield 1779 some performance issues. As such, the WDT should be avoided here 1780 unless it is absolutely necessary. 1781 1782 To compile this driver as a module, choose M here: the 1783 module will be called shwdt. 1784 1785# SPARC Architecture 1786 1787# SPARC64 Architecture 1788 1789config WATCHDOG_CP1XXX 1790 tristate "CP1XXX Hardware Watchdog support" 1791 depends on SPARC64 && PCI 1792 ---help--- 1793 This is the driver for the hardware watchdog timers present on 1794 Sun Microsystems CompactPCI models CP1400 and CP1500. 1795 1796 To compile this driver as a module, choose M here: the 1797 module will be called cpwatchdog. 1798 1799 If you do not have a CompactPCI model CP1400 or CP1500, or 1800 another UltraSPARC-IIi-cEngine boardset with hardware watchdog, 1801 you should say N to this option. 1802 1803config WATCHDOG_RIO 1804 tristate "RIO Hardware Watchdog support" 1805 depends on SPARC64 && PCI 1806 help 1807 Say Y here to support the hardware watchdog capability on Sun RIO 1808 machines. The watchdog timeout period is normally one minute but 1809 can be changed with a boot-time parameter. 1810 1811config WATCHDOG_SUN4V 1812 tristate "Sun4v Watchdog support" 1813 select WATCHDOG_CORE 1814 depends on SPARC64 1815 help 1816 Say Y here to support the hypervisor watchdog capability embedded 1817 in the SPARC sun4v architecture. 1818 1819 To compile this driver as a module, choose M here. The module will 1820 be called sun4v_wdt. 1821 1822# XTENSA Architecture 1823 1824# Xen Architecture 1825 1826config XEN_WDT 1827 tristate "Xen Watchdog support" 1828 depends on XEN 1829 help 1830 Say Y here to support the hypervisor watchdog capability provided 1831 by Xen 4.0 and newer. The watchdog timeout period is normally one 1832 minute but can be changed with a boot-time parameter. 1833 1834config UML_WATCHDOG 1835 tristate "UML watchdog" 1836 depends on UML || COMPILE_TEST 1837 1838# 1839# ISA-based Watchdog Cards 1840# 1841 1842comment "ISA-based Watchdog Cards" 1843 depends on ISA 1844 1845config PCWATCHDOG 1846 tristate "Berkshire Products ISA-PC Watchdog" 1847 depends on ISA 1848 ---help--- 1849 This is the driver for the Berkshire Products ISA-PC Watchdog card. 1850 This card simply watches your kernel to make sure it doesn't freeze, 1851 and if it does, it reboots your computer after a certain amount of 1852 time. This driver is like the WDT501 driver but for different 1853 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC 1854 watchdog cards can be ordered from <http://www.berkprod.com/>. 1855 1856 To compile this driver as a module, choose M here: the 1857 module will be called pcwd. 1858 1859 Most people will say N. 1860 1861config MIXCOMWD 1862 tristate "Mixcom Watchdog" 1863 depends on ISA 1864 ---help--- 1865 This is a driver for the Mixcom hardware watchdog cards. This 1866 watchdog simply watches your kernel to make sure it doesn't freeze, 1867 and if it does, it reboots your computer after a certain amount of 1868 time. 1869 1870 To compile this driver as a module, choose M here: the 1871 module will be called mixcomwd. 1872 1873 Most people will say N. 1874 1875config WDT 1876 tristate "WDT Watchdog timer" 1877 depends on ISA 1878 ---help--- 1879 If you have a WDT500P or WDT501P watchdog board, say Y here, 1880 otherwise N. It is not possible to probe for this board, which means 1881 that you have to inform the kernel about the IO port and IRQ that 1882 is needed (you can do this via the io and irq parameters) 1883 1884 To compile this driver as a module, choose M here: the 1885 module will be called wdt. 1886 1887# 1888# PCI-based Watchdog Cards 1889# 1890 1891comment "PCI-based Watchdog Cards" 1892 depends on PCI 1893 1894config PCIPCWATCHDOG 1895 tristate "Berkshire Products PCI-PC Watchdog" 1896 depends on PCI 1897 ---help--- 1898 This is the driver for the Berkshire Products PCI-PC Watchdog card. 1899 This card simply watches your kernel to make sure it doesn't freeze, 1900 and if it does, it reboots your computer after a certain amount of 1901 time. The card can also monitor the internal temperature of the PC. 1902 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>. 1903 1904 To compile this driver as a module, choose M here: the 1905 module will be called pcwd_pci. 1906 1907 Most people will say N. 1908 1909config WDTPCI 1910 tristate "PCI-WDT500/501 Watchdog timer" 1911 depends on PCI 1912 ---help--- 1913 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N. 1914 1915 If you have a PCI-WDT501 watchdog board then you can enable the 1916 temperature sensor by setting the type parameter to 501. 1917 1918 If you want to enable the Fan Tachometer on the PCI-WDT501, then you 1919 can do this via the tachometer parameter. Only do this if you have a 1920 fan tachometer actually set up. 1921 1922 To compile this driver as a module, choose M here: the 1923 module will be called wdt_pci. 1924 1925# 1926# USB-based Watchdog Cards 1927# 1928 1929comment "USB-based Watchdog Cards" 1930 depends on USB 1931 1932config USBPCWATCHDOG 1933 tristate "Berkshire Products USB-PC Watchdog" 1934 depends on USB 1935 ---help--- 1936 This is the driver for the Berkshire Products USB-PC Watchdog card. 1937 This card simply watches your kernel to make sure it doesn't freeze, 1938 and if it does, it reboots your computer after a certain amount of 1939 time. The card can also monitor the internal temperature of the PC. 1940 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>. 1941 1942 To compile this driver as a module, choose M here: the 1943 module will be called pcwd_usb. 1944 1945 Most people will say N. 1946 1947comment "Watchdog Pretimeout Governors" 1948 1949config WATCHDOG_PRETIMEOUT_GOV 1950 bool "Enable watchdog pretimeout governors" 1951 help 1952 The option allows to select watchdog pretimeout governors. 1953 1954if WATCHDOG_PRETIMEOUT_GOV 1955 1956choice 1957 prompt "Default Watchdog Pretimeout Governor" 1958 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC 1959 help 1960 This option selects a default watchdog pretimeout governor. 1961 The governor takes its action, if a watchdog is capable 1962 to report a pretimeout event. 1963 1964config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP 1965 bool "noop" 1966 select WATCHDOG_PRETIMEOUT_GOV_NOOP 1967 help 1968 Use noop watchdog pretimeout governor by default. If noop 1969 governor is selected by a user, write a short message to 1970 the kernel log buffer and don't do any system changes. 1971 1972config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC 1973 bool "panic" 1974 select WATCHDOG_PRETIMEOUT_GOV_PANIC 1975 help 1976 Use panic watchdog pretimeout governor by default, if 1977 a watchdog pretimeout event happens, consider that 1978 a watchdog feeder is dead and reboot is unavoidable. 1979 1980endchoice 1981 1982config WATCHDOG_PRETIMEOUT_GOV_NOOP 1983 tristate "Noop watchdog pretimeout governor" 1984 help 1985 Noop watchdog pretimeout governor, only an informational 1986 message is added to kernel log buffer. 1987 1988config WATCHDOG_PRETIMEOUT_GOV_PANIC 1989 tristate "Panic watchdog pretimeout governor" 1990 help 1991 Panic watchdog pretimeout governor, on watchdog pretimeout 1992 event put the kernel into panic. 1993 1994endif # WATCHDOG_PRETIMEOUT_GOV 1995 1996endif # WATCHDOG 1997