[Buildroot] inittab for different systems

[Buildroot] inittab for different systems

[Yegor Yefremov]

I have two systems that use DT and thus can share one uImage. I'd like
to use one rootfs image for both. How do I configure console in
inittab, so that it can deal with different systems (one has ttyO2 the
other ttyO3 as console)?

Yegor

[Buildroot] inittab for different systems

[Arnout Vandecappelle]

On 12/21/12 16:36, Yegor Yefremov wrote:
> I have two systems that use DT and thus can share one uImage. I'd like
> to use one rootfs image for both. How do I configure console in
> inittab, so that it can deal with different systems (one has ttyO2 the
> other ttyO3 as console)?

  I think the simplest way is to have a custom inittab that opens a getty 
on both ttyO2 and ttyO3.

  I _think_ you can also use /dev/console (assuming console is set up in 
your DT) - but I guess strange things will happen if you have multiple 
consoles.

  Regards,
  Arnout


-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
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[Buildroot] inittab for different systems

[Yegor Yefremov]

On Wed, Jan 2, 2013 at 7:37 AM, Arnout Vandecappelle <arnout@mind.be> wrote:
> On 12/21/12 16:36, Yegor Yefremov wrote:
>>
>> I have two systems that use DT and thus can share one uImage. I'd like
>> to use one rootfs image for both. How do I configure console in
>> inittab, so that it can deal with different systems (one has ttyO2 the
>> other ttyO3 as console)?
>
>
>  I think the simplest way is to have a custom inittab that opens a getty on
> both ttyO2 and ttyO3.
>
>  I _think_ you can also use /dev/console (assuming console is set up in your
> DT) - but I guess strange things will happen if you have multiple consoles.
>
>  Regards,
>  Arnout

/dev/console has just once small drawback: you can't login as root
AFAIK, But with this patch (tty_io.c)
http://svn.visionsystems.de/cgi-bin/viewvc.cgi/trunk/buildroot-2011.08/board/vscom/linux-3.0/linux-0013-dev-console-fix.patch?revision=26&root=buildroot&view=markup
one can fix this. But I would like the "official" way. By the way why
this /dev/console restriction?

Yegor