Using one RPI2 as a serial terminal for a second RPI2

[Ian Lepore]

On Wed, 2016-03-23 at 10:02 +0200, Borodin Oleg wrote:
> On Wed, 23 Mar 2016 00:49:03 -0300
> Luiz Otavio O Souza <lists.br at gmail.com> wrote:
> 
> > On 22 March 2016 at 22:24, bob prohaska wrote:
> > > 
> > > Is there a way to operate an RPI2  single user with the HDMI
> > > monitor
> > > and a USB keyboard?  
> > 
> > Try this:
> > 
> > # sysctl kern.console=ttyv0
> > 
> > and then:
> > 
> > # shutdown now
> 
> 
> How use usb keyboard _before_ kernel loading, with uboot/loader?
> 

That cannot be done, because u-boot still doesn't have support for low
-speed usb devices on rpi.  At least, it didn't last time I checked (in
January), I think there's a new version of u-boot out, I'll try to find
time to test it soon.

-- Ian