[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

-- 
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The software required `Windows 95 or better', so I installed Linux.




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