Manual Reference Pages - WBWD (4)
- device driver for watchdog timer found on Winbond Super I/O chips
To compile this driver into the kernel, place the following line in your
kernel configuration file:
.Cd device wbwd
Alternatively, to load the driver as a module at boot time, place the following
support for the watchdog interrupt timer present on at least the following
Winbond Super I/O chips:
- 83627HF/F/HG/G Rev. G
- 83627HF/F/HG/G Rev. J
- 83627HF/F/HG/G Rev. UD-A
- 83627DHG IC ver. 5
driver provides the following options as
This variable allows to program the timer to a value independent on the one
provided by the
framework while still relying on the regular updates from e.g.
This is particularly useful if your system provides multiple watchdogs and
you want them to fire in a special sequence to trigger an NMI after a shorter
period than the reset timeout for example.
The value set must not be lower than the sleep time of
A value of 0 disables this feature and the timeout value provided by
will be used.
If set this sysctl will tell the driver to log its current state before and
after the timer reset on each invocation from
to the kernel message buffer for debugging.
This read-only value gives the state of some registers on last update.
driver also provides further sysctl options that are hidden by default.
See the source code for more information.
driver first appeared in
.Fx 10.0 .
This manual page was written by
.An Bjoern A. Zeeb Aq bz@FreeBSD.org .
Visit the GSP FreeBSD Man Page Interface.
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