# # Character device configuration # menu "Watchdog Cards" config WATCHDOG bool "Watchdog Timer Support" ---help--- If you say Y here (and to one of the following options) and create a character special file /dev/watchdog with major number 10 and minor number 130 using mknod ("man mknod"), you will get a watchdog, i.e.: subsequently opening the file and then failing to write to it for longer than 1 minute will result in rebooting the machine. This could be useful for a networked machine that needs to come back online as fast as possible after a lock-up. There's both a watchdog implementation entirely in software (which can sometimes fail to reboot the machine) and a driver for hardware watchdog boards, which are more robust and can also keep track of the temperature inside your computer. For details, read <file:Documentation/watchdog.txt> in the kernel source. The watchdog is usually used together with the watchdog daemon which is available from <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can also monitor NFS connections and can reboot the machine when the process table is full. If unsure, say N. config WATCHDOG_NOWAYOUT bool "Disable watchdog shutdown on close" depends on WATCHDOG help The default watchdog behaviour (which you get if you say N here) is to stop the timer if the process managing it closes the file /dev/watchdog. It's always remotely possible that this process might get killed. If you say Y here, the watchdog cannot be stopped once it has been started. config SOFT_WATCHDOG tristate "Software watchdog" depends on WATCHDOG help A software monitoring watchdog. This will fail to reboot your system from some situations that the hardware watchdog will recover from. Equally it's a lot cheaper to install. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. The module will be called softdog. config WDT tristate "WDT Watchdog timer" depends on WATCHDOG ---help--- If you have a WDT500P or WDT501P watchdog board, say Y here, otherwise N. It is not possible to probe for this board, which means that you have to inform the kernel about the IO port and IRQ using the "wdt=" kernel option (try "man bootparam" or see the documentation of your boot loader (lilo or loadlin) about how to pass options to the kernel at boot time). If you want to compile this as a module ( = code which can be inserted in and removed from the running kernel whenever you want), say M here and read <file:Documentation/modules.txt>. The module will be called wdt. config WDTPCI tristate "WDT PCI Watchdog timer" depends on WATCHDOG ---help--- If you have a PCI WDT500/501 watchdog board, say Y here, otherwise N. It is not possible to probe for this board, which means that you have to inform the kernel about the IO port and IRQ using the "wdt=" kernel option (try "man bootparam" or see the documentation of your boot loader (lilo or loadlin) about how to pass options to the kernel at boot time). If you want to compile this as a module ( = code which can be inserted in and removed from the running kernel whenever you want), say M here and read <file:Documentation/modules.txt>. The module will be called wdt_pci. config WDT_501 bool "WDT501 features" depends on WDT help Saying Y here and creating a character special file /dev/temperature with major number 10 and minor number 131 ("man mknod") will give you a thermometer inside your computer: reading from /dev/temperature yields one byte, the temperature in degrees Fahrenheit. This works only if you have a WDT501P watchdog board installed. config WDT_501_FAN bool "Fan Tachometer" depends on WDT_501 help Enable the Fan Tachometer on the WDT501. Only do this if you have a fan tachometer actually set up. config PCWATCHDOG tristate "Berkshire Products PC Watchdog" depends on WATCHDOG ---help--- This is the driver for the Berkshire Products PC Watchdog card. This card simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is like the WDT501 driver but for different hardware. Please read <file:Documentation/pcwd-watchdog.txt>. The PC watchdog cards can be ordered from <http://www.berkprod.com/>. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called pcwd. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. Most people will say N. config ACQUIRE_WDT tristate "Acquire SBC Watchdog Timer" depends on WATCHDOG ---help--- This is the driver for the hardware watchdog on the PSC-6x86 Single Board Computer produced by Acquire Inc (and others). This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is like the WDT501 driver but for different hardware. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called pscwdt. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. Most people will say N. config ADVANTECH_WDT tristate "Advantech SBC Watchdog Timer" depends on WATCHDOG help If you are configuring a Linux kernel for the Advantech single-board computer, say `Y' here to support its built-in watchdog timer feature. See the help for CONFIG_WATCHDOG for discussion. config 21285_WATCHDOG tristate "DC21285 watchdog" depends on WATCHDOG && FOOTBRIDGE help The Intel Footbridge chip contains a builtin watchdog circuit. Say Y here if you wish to use this. Alternatively say M to compile the driver as a module, which will be called wdt285. This driver does not work on all machines. In particular, early CATS boards have hardware problems that will cause the machine to simply lock up if the watchdog fires. "If in doubt, leave it out" - say N. config 977_WATCHDOG tristate "NetWinder WB83C977 watchdog" depends on WATCHDOG && FOOTBRIDGE && ARCH_NETWINDER help Say Y here to include support for the WB977 watchdog included in NetWinder machines. Alternatively say M to compile the driver as a module, which will be called wdt977. Not sure? It's safe to say N. config SA1100_WATCHDOG tristate "SA1100 watchdog" depends on WATCHDOG && ARCH_SA1100 help Watchdog timer embedded into SA11x0 chips. This will reboot your system when timeout is reached. NOTE, that once enabled, this timer cannot be disabled. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). If you want to compile it as a module, say M here and read Documentation/modules.txt. The module will be called sa1100_wdt. config EUROTECH_WDT tristate "Eurotech CPU-1220/1410 Watchdog Timer" depends on WATCHDOG help Enable support for the watchdog timer on the Eurotech CPU-1220 and CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product information are at <http://www.eurotech.it/>. config IB700_WDT tristate "IB700 SBC Watchdog Timer" depends on WATCHDOG ---help--- This is the driver for the hardware watchdog on the IB700 Single Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is like the WDT501 driver but for slightly different hardware. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called ib700wdt. If you want to compile it as a module, say M here and read Documentation/modules.txt. Most people will say N. config I810_TCO tristate "Intel i810 TCO timer / Watchdog" depends on WATCHDOG ---help--- Hardware driver for the TCO timer built into the Intel i810 and i815 chipset family. The TCO (Total Cost of Ownership) timer is a watchdog timer that will reboot the machine after its second expiration. The expiration time can be configured by commandline argument "i810_margin=<n>" where <n> is the counter initial value. It is decremented every 0.6 secs, the default is 50 which gives a timeout of 30 seconds and one minute until reset. On some motherboards the driver may fail to reset the chipset's NO_REBOOT flag which prevents the watchdog from rebooting the machine. If this is the case you will get a kernel message like "i810tco init: failed to reset NO_REBOOT flag". If you want to compile this as a module, say M and read <file:Documentation/modules.txt>. The module will be called i810-tco. config MIXCOMWD tristate "Mixcom Watchdog" depends on WATCHDOG ---help--- This is a driver for the Mixcom hardware watchdog cards. This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called mixcomwd. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. Most people will say N. config SCx200_WDT tristate "NatSemi SCx200 Watchdog" depends on WATCHDOG help Enable the built-in watchdog timer support on the National Semiconductor SCx200 processors. If compiled as a module, it will be called scx200_watchdog. config 60XX_WDT tristate "SBC-60XX Watchdog Timer" depends on WATCHDOG help This driver can be used with the watchdog timer found on some single board computers, namely the 6010 PII based computer. It may well work with other cards. It reads port 0x443 to enable and re-set the watchdog timer, and reads port 0x45 to disable the watchdog. If you have a card that behave in similar ways, you can probably make this driver work with your card as well. You can compile this driver directly into the kernel, or use it as a module. The module will be called sbc60xxwdt. config W83877F_WDT tristate "W83877F (EMACS) Watchdog Timer" depends on WATCHDOG ---help--- This is the driver for the hardware watchdog on the W83877F chipset as used in EMACS PC-104 motherboards (and likely others). This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called mixcomwd. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. Most people will say N. config MACHZ_WDT tristate "ZF MachZ Watchdog" depends on WATCHDOG ---help--- If you are using a ZF Micro MachZ processor, say Y here, otherwise N. This is the driver for the watchdog timer builtin on that processor using ZF-Logic interface. This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called machzwd. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. config W83877F_WDT tristate "W83877F Computer Watchdog" depends on WATCHDOG config SC520_WDT tristate "AMD Elan SC520 processor Watchdog" depends on WATCHDOG help This is the driver for the hardware watchdog built in to the AMD "Elan" SC520 microcomputer commonly used in embedded systems. This watchdog simply watches your kernel to make sure it doesn't freeze, and if it does, it reboots your computer after a certain amount of time. You can compile this driver directly into the kernel, or use it as a module. The module will be called sc520_wdt.o. config ALIM7101_WDT tristate "ALi M7101 PMU Computer Watchdog" depends on WATCHDOG help This is the driver for the hardware watchdog on the ALi M7101 PMU as used in the x86 Cobalt servers. This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called alim7101_wdt.o. If you want to compile it as a module, say M here and read Documentation/modules.txt. Most people will say N. config SC1200_WDT tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" depends on WATCHDOG help This is a driver for National Semiconductor PC87307/PC97307 hardware watchdog cards as found on the SC1200. This watchdog is mainly used for power management purposes and can be used to power down the device during inactivity periods (includes interrupt activity monitoring). This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). The module is called sc1200wdt.o. If you want to compile it as a module, say M here and read Documentation/modules.txt. Most people will say N. config WAFER_WDT tristate "ICP Wafer 5823 Single Board Computer Watchdog" depends on WATCHDOG help This is a driver for the hardware watchdog on the ICP Wafer 5823 Single Board Computer (and probably other similar models). This driver is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). If you want to compile it as a module, say M here and read Documentation/modules.txt. The module will be called wafer5823wdt.o endmenu