On Fri, Feb 15, 2013 at 02:00:10PM -0500, Harvey Chapman wrote: > On Feb 15, 2013, at 7:38 AM, Albert ARIBAUD <albert.u.b...@aribaud.net> wrote: > > On Thu, 14 Feb 2013 12:19:11 -0800 > > (PST), Sean Omalley <omalle...@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) >
I have a BayTech network-attached powerstrip that does something similar. It has switchable AC outlets and network-accessible serial ports, but it doesn't have controllable GPIOs or a USB interface. Ira _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
