[U-Boot-Users] switching serial console on or off

Wolfgang Denk wd at denx.de
Tue Mar 27 17:02:52 CEST 2007

In message <87r6raloo5.fsf at z1.synertronixx> you wrote:
> Again I wonder if it is possible to switch off the serial console in
> u-boot and only switching it on for debugging purposes so its free for
> other applications in the daily work.

Yes, this is possible.

> I wonder if it is possible to determine a level of a GPIO pin and set
> (okay, this will work for sure) an env variable on that. This decides
> wether the serial console is enabled or the linux kernel gets booted
> silently. 

Yes, this is possible.

> Is something like that possible?

Yes, and it has been implemented before on several boards.

Best regards,

Wolfgang Denk

DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk
Office:  Kirchenstr. 5,       D-82194 Groebenzell,            Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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