[U-Boot] break command.

[Wolfgang Denk]

Dear Harvey Chapman,

In message <2586B402-FB69-465C-82A4-62A065C74234 at 3gfp.com> you wrote:
>
> > As soon as U-Boot gives control to the payload (Linux or whatever)
> > there is no possible assumption that U-Boot remains intact in RAM, so
> > your only chance is indeed some hardware reset... But then the question
> > is not related to U-Boot any more.
> 
> On that note, does anyone know of a device that would do this? Perhaps a combination device like this:
> 
> - USB interface to a pc
> - serial port for device
> - relay controllable A/C power plug (U.S.)
> - controllable gpio (for wiring to a power button, reset switch, etc)

The standard approach is to use a hardware watchdog that will reset
the board if it is not triggered in time.

Best regards,

Wolfgang Denk

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