[U-Boot] Watchdog support for ppc4xx

[Wolfgang Denk]

Dear Stefan Roese,

In message <201005201355.01964.sr at denx.de> you wrote:
> 
> > Also I would like to determine in u-boot if a
> > reset was caused by the watchdog timer using the TSR WRS field.  If it
> > was reset by the watchdog we will boot into a failsafe partition to
> > protect against system update errors.
> > 
> > Has anyone done something like this?
> 
> Such a detection is not implemented for PPC4xx. Not sure if it's implemented 
> for any other architecture.

I think lwmon5 performs such checking; eventually this is buryied
somewhere in the POST code.

Best regards,

Wolfgang Denk

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