]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] ppc32: Added support for the Book-E style Watchdog Timer
authorKumar Gala <galak@freescale.com>
Sat, 3 Sep 2005 22:55:33 +0000 (15:55 -0700)
committerLinus Torvalds <torvalds@evo.osdl.org>
Mon, 5 Sep 2005 07:05:56 +0000 (00:05 -0700)
commita2f40ccd294d14e5aca464c1913e8e0d8de35fca
treed900ebdbf37656d77acf7934db40021b21d49fde
parent886b9fa49900b055e20cd98f379fda49835d1ee6
[PATCH] ppc32: Added support for the Book-E style Watchdog Timer

PowerPC 40x and Book-E processors support a watchdog timer at the processor
core level.  The timer has implementation dependent timeout frequencies
that can be configured by software.

One the first Watchdog timeout we get a critical exception.  It is left to
board specific code to determine what should happen at this point.  If
nothing is done and another timeout period expires the processor may
attempt to reset the machine.

Command line parameters:
  wdt=0 : disable watchdog (default)
  wdt=1 : enable watchdog

  wdt_period=N : N sets the value of the Watchdog Timer Period.

  The Watchdog Timer Period meaning is implementation specific. Check
  User Manual for the processor for more details.

This patch is based off of work done by Takeharu Kato.

Signed-off-by: Matt McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Documentation/watchdog/watchdog-api.txt
arch/ppc/kernel/head_44x.S
arch/ppc/kernel/head_4xx.S
arch/ppc/kernel/head_fsl_booke.S
arch/ppc/kernel/setup.c
arch/ppc/kernel/traps.c
arch/ppc/syslib/ppc4xx_setup.c
drivers/char/watchdog/Kconfig
drivers/char/watchdog/Makefile
drivers/char/watchdog/booke_wdt.c [new file with mode: 0644]