[U-Boot] break command.

[Harvey Chapman]

On Feb 15, 2013, at 7:38 AM, Albert ARIBAUD <albert.u.boot at aribaud.net> wrote:
> On Thu, 14 Feb 2013 12:19:11 -0800
> (PST), Sean Omalley <omalley_s at rocketmail.com> wrote:
> 
>> Is there anyway to break back into u-boot after trying to boot from linux (arm)? Similar to Open Firmwares stop-a, ctrl-break? I didn't see anything in the documentation nor poking around online. I am really hoping I missed something, or there is support that just needs to be compiled in. :)
>> 
> 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)