[U-Boot-Users] Watchdog
Wolfgang Denk
wd at denx.de
Thu Feb 12 11:52:21 CET 2004
In message <OFFAEBF961.315F63C1-ON42256E38.003AD8E6-08256E38.003AE977 at mksinternal.com> you wrote:
>
> Will this disturb u-boots operation?
Sorry, only now I realize that this was sent to the u-boot list, too.
I wrote:
> Yes, you need to enable CONFIG_WATCHDOG and CONFIG_WDT_MPC8XX to get
> access to the features documented in Documentation/man4/wdt_mpc8xx.4
This was for Linux. If you do this, you must set CONFIG_WATCHDOG in
U-Boot, too.
CONFIG_WATCHDOG in U-Boot will enable the watchdog (actually for
MPC8xx it will _not_ disable it). If the watchdog is running, any
software you run must make sure to trigger it, i. e. a Linux kernel
without watchdog support will be reset very quickly.
Best regards,
Wolfgang Denk
--
See us @ Embedded World, Nuremberg, Feb 17 - 19, Hall 12.0 Booth 440
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
The software required `Windows 95 or better', so I installed Linux.
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