powerpc: udbg based backend for hvc_console

[David Gibson]

On Tue, Nov 18, 2008 at 09:06:17AM -0600, Timur Tabi wrote:
> David Gibson wrote:
> 
> > Given the variety of strange I/O configurations in prototype and
> > embedded platforms, I can't imagine this was a unique situation.  So
> > I've pushed my patch out, so anyone else in a similar situation can
> > immediately turn their little udbg methods for whatever strange I/O
> > they have into a fully-functional console.  Maybe it's not something
> > you'd want to go to release with, but it certainly simplifies life
> > during bringup.
> 
> Ok, I understand now.  However, I would like to see two changes:
> 
> 1) Re-arrange the Makefile as I pointed out in another post.

Um.. yeah.. I'm a bit baffled by this.. all the existing backends
are listed after hvc_console, I just added hvc_udbg to the end.  I
didn't really understand the rationale in that commit, but then I
haven't had time to look at it very much yet.

> 2) Update the Kconfig help file to be very clear that this feature
> is only meaningful if the platform has a udbg back-end but no other
> console or TTY driver.

Alrighty...

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson