Re: [PATCH] Use platform device for 8250 registration

[Tom Rini <trini@kernel.crashing.org>]

On Wed, Aug 17, 2005 at 09:27:03AM -0700, Matt Porter wrote:
> On Wed, Aug 17, 2005 at 11:16:39AM -0500, Kumar Gala wrote:
> > 
> > On Aug 17, 2005, at 10:30 AM, Tom Rini wrote:
> > 
> > > On Wed, Aug 17, 2005 at 10:22:54AM -0500, Kumar Gala wrote:
> > >
> > >
> > >>> So long as you convert arch/ppc/boot/ to this as well, why not  
> > >>> (or at
> > >>> least being able to grab the infos from these structs somehow).
> > >>>
> > >>> Once everyone is on a flat tree, I don't object to killing all of  
> > >>> the
> > >>> old-style uart definitions steaming out of <asm-ppc/serial.h>.
> > >>>
> > >>
> > >> Tom, do have a test system that I can look at converting that you
> > >> would be willing to test the changes to arch/ppc/boot for me.
> > >>
> > >
> > > With Matt's patch, you could boot a PReP kernel (no VGA con) :)
> > > But if you convert LoPEC, I'll throw the kernel at it.
> > 
> > Does PReP use bootcode?  I thought it was OF based, but what do I know.
> 
> Are you asking on a real machine or on qemu?  On real PReP hardwrae
> you can find both OF and other firmware like PPCBUG...in both cases
> they dump residual data.  On qemu, jmayer wrote the openhackware bios
> with is supposed to be some minimal OF-like thing...it dumps
> residual data too.

But either way, the kernel boots using the code in arch/ppc/boot/simple/
which uses serial values from <asm-ppc/pc_serial.h>

-- 
Tom Rini
http://gate.crashing.org/~trini/