[U-Boot] break command.

[Albert ARIBAUD]

Hi Sean,

(can you please set your mailer to wrap lines at about 70è75
characters? Thanks in advance!)

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. :)
> 
> Even if it resets the cpu, or sends a signal to the jtag_reset would be fine. When the machine locks up, I don't want to have to push a button or unplug it since most of the time, I am not in the same vicinity as the machine. Leaving a serial console attached and remoting into another machine is easier and cheaper, then other alternatives. I could send a signal from a gpio to the jtag_reset (or short it), but the machine I would -want- to use doesn't have a gpio, and I don't want to spend money for multiple jtags when it seems more logical to do it through the serial console. 

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.

> Thanks! 

No problem.

Amicalement,
-- 
Albert.