path: root/drivers/char/watchdog/Kconfig

#
# Watchdog 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/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.

#
# General Watchdog drivers
#

comment "Watchdog Device Drivers"
	depends on WATCHDOG

# Architecture Independant

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.

	  To compile this driver as a module, choose M here: the
	  module will be called softdog.

# ARM Architecture

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 IXP4XX_WATCHDOG
	tristate "IXP4xx Watchdog"
	depends on WATCHDOG && ARCH_IXP4XX
	help
	  Say Y here if to include support for the watchdog timer
	  in the Intel IXP4xx network processors. This driver can
	  be built as a module by choosing M. The module will
	  be called ixp4xx_wdt.

	  Note: The internal IXP4xx watchdog does a soft CPU reset
	  which doesn't reset any peripherals. There are circumstances
	  where the watchdog will fail to reset the board correctly
	  (e.g., if the boot ROM is in an unreadable state).

	  Say N if you are unsure.

config IXP2000_WATCHDOG
	tristate "IXP2000 Watchdog"
	depends on WATCHDOG && ARCH_IXP2000
	help
	  Say Y here if to include support for the watchdog timer
	  in the Intel IXP2000(2400, 2800, 2850) network processors.
	  This driver can be built as a module by choosing M. The module
	  will be called ixp2000_wdt.

	  Say N if you are unsure.

config S3C2410_WATCHDOG
	tristate "S3C2410 Watchdog"
	depends on WATCHDOG && ARCH_S3C2410
	help
	  Watchdog timer block in the Samsung S3C2410 chips. This will
	  reboot the system when the timer expires with the watchdog
	  enabled.

	  The driver is limited by the speed of the system's PCLK
	  signal, so with reasonbaly fast systems (PCLK around 50-66MHz)
	  then watchdog intervals of over approximately 20seconds are
	  unavailable.

	  The driver can be built as a module by choosing M, and will
	  be called s3c2410_wdt

config SA1100_WATCHDOG
	tristate "SA1100/PXA2xx watchdog"
	depends on WATCHDOG && ( ARCH_SA1100 || ARCH_PXA )
	help
	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
	  reboot your system when timeout is reached.

	  NOTE: once enabled, this timer cannot be disabled.

	  To compile this driver as a module, choose M here: the
	  module will be called sa1100_wdt.

# X86 (i386 + ia64 + x86_64) Architecture

config ACQUIRE_WDT
	tristate "Acquire SBC Watchdog Timer"
	depends on WATCHDOG && X86
	---help---
	  This is the driver for the hardware watchdog on Single Board
	  Computers 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.

	  To compile this driver as a module, choose M here: the
	  module will be called acquirewdt.

	  Most people will say N.

config ADVANTECH_WDT
	tristate "Advantech SBC Watchdog Timer"
	depends on WATCHDOG && X86
	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. More information can be found at
	  <http://www.advantech.com.tw/products/>

config ALIM1535_WDT
	tristate "ALi M1535 PMU Watchdog Timer"
	depends on WATCHDOG && X86 && PCI
	---help---
	  This is the driver for the hardware watchdog on the ALi M1535 PMU.

	  To compile this driver as a module, choose M here: the
	  module will be called alim1535_wdt.

	  Most people will say N.

config ALIM7101_WDT
	tristate "ALi M7101 PMU Computer Watchdog"
	depends on WATCHDOG && X86 && PCI
	help
	  This is the driver for the hardware watchdog on the ALi M7101 PMU
	  as used in the x86 Cobalt servers.

	  To compile this driver as a module, choose M here: the
	  module will be called alim7101_wdt.

	  Most people will say N.

config SC520_WDT
	tristate "AMD Elan SC520 processor Watchdog"
	depends on WATCHDOG && X86
	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.

config EUROTECH_WDT
	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
	depends on WATCHDOG && X86
	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 && X86
	---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.

	  To compile this driver as a module, choose M here: the
	  module will be called ib700wdt.

	  Most people will say N.

config WAFER_WDT
	tristate "ICP Wafer 5823 Single Board Computer Watchdog"
	depends on WATCHDOG && X86
	help
	  This is a driver for the hardware watchdog on the ICP Wafer 5823
	  Single Board Computer (and probably other similar models).

	  To compile this driver as a module, choose M here: the
	  module will be called wafer5823wdt.

config I8XX_TCO
	tristate "Intel i8xx TCO Timer/Watchdog"
	depends on WATCHDOG && (X86 || IA64) && PCI
	---help---
	  Hardware driver for the TCO timer built into the Intel 82801
	  I/O Controller Hub 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
	  with the "heartbeat" parameter.

	  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
	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".

	  To compile this driver as a module, choose M here: the
	  module will be called i8xx_tco.

config SC1200_WDT
	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
	depends on WATCHDOG && X86
	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).

	  To compile this driver as a module, choose M here: the
	  module will be called sc1200wdt.

	  Most people will say N.

config SCx200_WDT
	tristate "National Semiconductor SCx200 Watchdog"
	depends on WATCHDOG && SCx200 && PCI
	help
	  Enable the built-in watchdog timer support on the National
	  Semiconductor SCx200 processors.

	  If compiled as a module, it will be called scx200_wdt.

config 60XX_WDT
	tristate "SBC-60XX Watchdog Timer"
	depends on WATCHDOG && X86
	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 CPU5_WDT
	tristate "SMA CPU5 Watchdog"
	depends on WATCHDOG && X86
	---help---
	  TBD.
	  To compile this driver as a module, choose M here: the
	  module will be called cpu5wdt.

config W83627HF_WDT
	tristate "W83627HF Watchdog Timer"
	depends on WATCHDOG && X86
	---help---
	  This is the driver for the hardware watchdog on the W83627HF chipset
	  as used in Advantech PC-9578 and Tyan S2721-533 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.

	  To compile this driver as a module, choose M here: the
	  module will be called w83627hf_wdt.

	  Most people will say N.

config W83877F_WDT
	tristate "W83877F (EMACS) Watchdog Timer"
	depends on WATCHDOG && X86
	---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.

	  To compile this driver as a module, choose M here: the
	  module will be called w83877f_wdt.

	  Most people will say N.

config MACHZ_WDT
	tristate "ZF MachZ Watchdog"
	depends on WATCHDOG && X86
	---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.

	  To compile this driver as a module, choose M here: the
	  module will be called machzwd.

# PowerPC Architecture

config 8xx_WDT
	tristate "MPC8xx Watchdog Timer"
	depends on WATCHDOG && 8xx

config BOOKE_WDT
	tristate "PowerPC Book-E Watchdog Timer"
	depends on WATCHDOG && (BOOKE || 4xx)
	---help---
	  Please see Documentation/watchdog/watchdog-api.txt for
	  more information.

# MIPS Architecture

config INDYDOG
	tristate "Indy/I2 Hardware Watchdog"
	depends on WATCHDOG && SGI_IP22
	help
	  Hardwaredriver for the Indy's/I2's watchdog. This is a
	  watchdog timer that will reboot the machine after a 60 second
	  timer expired and no process has written to /dev/watchdog during
	  that time.

# S390 Architecture

config ZVM_WATCHDOG
	tristate "z/VM Watchdog Timer"
	depends on WATCHDOG && ARCH_S390
	help
	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
	  provide a virtual watchdog timer to their guest that cause a
	  user define Control Program command to be executed after a
	  timeout.

	  To compile this driver as a module, choose M here. The module
	  will be called vmwatchdog.

# SUPERH Architecture

config SH_WDT
	tristate "SuperH Watchdog"
	depends on WATCHDOG && SUPERH
	help
	  This driver adds watchdog support for the integrated watchdog in the
	  SuperH processors. If you have one of these processors and wish
	  to have watchdog support enabled, say Y, otherwise say N.

	  As a side note, saying Y here will automatically boost HZ to 1000
	  so that the timer has a chance to clear the overflow counter. On
	  slower systems (such as the SH-2 and SH-3) this will likely yield
	  some performance issues. As such, the WDT should be avoided here
	  unless it is absolutely necessary.

	  To compile this driver as a module, choose M here: the
	  module will be called shwdt.

# SPARC64 Architecture

config WATCHDOG_CP1XXX
	tristate "CP1XXX Hardware Watchdog support"
	depends on WATCHDOG && SPARC64 && PCI
	---help---
	  This is the driver for the hardware watchdog timers present on
	  Sun Microsystems CompactPCI models CP1400 and CP1500.

	  To compile this driver as a module, choose M here: the
	  module will be called cpwatchdog.

	  If you do not have a CompactPCI model CP1400 or CP1500, or
	  another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
	  you should say N to this option.

config WATCHDOG_RIO
	tristate "RIO Hardware Watchdog support"
	depends on WATCHDOG && SPARC64 && PCI
	help
	  Say Y here to support the hardware watchdog capability on Sun RIO
	  machines.  The watchdog timeout period is normally one minute but
	  can be changed with a boot-time parameter.

# ppc64 RTAS watchdog
config WATCHDOG_RTAS
	tristate "RTAS watchdog"
	depends on WATCHDOG && PPC_RTAS
	help
	  This driver adds watchdog support for the RTAS watchdog.

          To compile this driver as a module, choose M here. The module
	  will be called wdrtas.

#
# ISA-based Watchdog Cards
#

comment "ISA-based Watchdog Cards"
	depends on WATCHDOG && ISA

config PCWATCHDOG
	tristate "Berkshire Products ISA-PC Watchdog"
	depends on WATCHDOG && ISA
	---help---
	  This is the driver for the Berkshire Products ISA-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/watchdog/pcwd-watchdog.txt>. The PC
	  watchdog cards can be ordered from <http://www.berkprod.com/>.

	  To compile this driver as a module, choose M here: the
	  module will be called pcwd.

	  Most people will say N.

config MIXCOMWD
	tristate "Mixcom Watchdog"
	depends on WATCHDOG && ISA
	---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.

	  To compile this driver as a module, choose M here: the
	  module will be called mixcomwd.

	  Most people will say N.

config WDT
	tristate "WDT Watchdog timer"
	depends on WATCHDOG && ISA
	---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 that
	  is needed (you can do this via the io and irq parameters)

	  To compile this driver as a module, choose M here: the
	  module will be called wdt.

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.

	  If you want to enable the Fan Tachometer on the WDT501P, then you
	  can do this via the tachometer parameter. Only do this if you have a
	  fan tachometer actually set up.

#
# PCI-based Watchdog Cards
#

comment "PCI-based Watchdog Cards"
	depends on WATCHDOG && PCI

config PCIPCWATCHDOG
	tristate "Berkshire Products PCI-PC Watchdog"
	depends on WATCHDOG && PCI
	---help---
	  This is the driver for the Berkshire Products PCI-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. The card can also monitor the internal temperature of the PC.
	  More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.

	  To compile this driver as a module, choose M here: the
	  module will be called pcwd_pci.

	  Most people will say N.

config WDTPCI
	tristate "PCI-WDT500/501 Watchdog timer"
	depends on WATCHDOG && PCI
	---help---
	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.

	  To compile this driver as a module, choose M here: the
	  module will be called wdt_pci.

config WDT_501_PCI
	bool "PCI-WDT501 features"
	depends on WDTPCI
	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 PCI-WDT501 watchdog board
	  installed.

	  If you want to enable the Fan Tachometer on the PCI-WDT501, then you
	  can do this via the tachometer parameter. Only do this if you have a
	  fan tachometer actually set up.

#
# USB-based Watchdog Cards
#

comment "USB-based Watchdog Cards"
	depends on WATCHDOG && USB

config USBPCWATCHDOG
	tristate "Berkshire Products USB-PC Watchdog"
	depends on WATCHDOG && USB
	---help---
	  This is the driver for the Berkshire Products USB-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. The card can also monitor the internal temperature of the PC.
	  More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.

	  To compile this driver as a module, choose M here: the
	  module will be called pcwd_usb.

	  Most people will say N.

endmenu