How to port PReP to arch/powerpc?

How to port PReP to arch/powerpc?

[Meelis Roos]

It seems no one cares for arch/ppc any more but the move to powerpc was 
not finished completely (PReP subarch was not migrated but sees users, I 
do not know about the user base of the other subarches). So I have been 
thinking about migrating PReP support to arch/powerpc myself since I use 
it.

Any general guidelines or specific hints about that? I have looked 
around in the code and some pieces are clearly PReP specific (setup, 
pci, boot) but others seem wuite a bit mixed up with other subarches.

-- 
Meelis Roos (mroos@linux.ee)

Re: How to port PReP to arch/powerpc?

[Josh Boyer]

On Wed, 22 Aug 2007 14:50:07 +0300 (EEST)
Meelis Roos <mroos@linux.ee> wrote:

> It seems no one cares for arch/ppc any more but the move to powerpc was 
> not finished completely (PReP subarch was not migrated but sees users, I 
> do not know about the user base of the other subarches). So I have been 
> thinking about migrating PReP support to arch/powerpc myself since I use 
> it.

The merge is still on-going.  So it's not "finished" at all.

> Any general guidelines or specific hints about that? I have looked 
> around in the code and some pieces are clearly PReP specific (setup, 
> pci, boot) but others seem wuite a bit mixed up with other subarches.

David Gibson and Rob Landley had a quite interesting discussion about
PReP last night on IRC.  You might want to contact them and see if they
came to any conclusions.

josh

Re: How to port PReP to arch/powerpc?

[Linas Vepstas]

On Wed, Aug 22, 2007 at 07:29:56AM -0500, Josh Boyer wrote:
> 
> David Gibson and Rob Landley had a quite interesting discussion about
> PReP last night on IRC. 

?? Where? I scrolled back on #ppc64 on freenode, and see no such
conversation.

--linas

Re: How to port PReP to arch/powerpc?

[Olof Johansson]

On Wed, Aug 22, 2007 at 11:19:34AM -0500, Linas Vepstas wrote:
> On Wed, Aug 22, 2007 at 07:29:56AM -0500, Josh Boyer wrote:
> > 
> > David Gibson and Rob Landley had a quite interesting discussion about
> > PReP last night on IRC. 
> 
> ?? Where? I scrolled back on #ppc64 on freenode, and see no such
> conversation.

It was on #mklinux


-Olof

Re: How to port PReP to arch/powerpc?

[Josh Boyer]

On Wed, 22 Aug 2007 10:27:16 -0500
Olof Johansson <olof@lixom.net> wrote:

> On Wed, Aug 22, 2007 at 11:19:34AM -0500, Linas Vepstas wrote:
> > On Wed, Aug 22, 2007 at 07:29:56AM -0500, Josh Boyer wrote:
> > > 
> > > David Gibson and Rob Landley had a quite interesting discussion about
> > > PReP last night on IRC. 
> > 
> > ?? Where? I scrolled back on #ppc64 on freenode, and see no such
> > conversation.
> 
> It was on #mklinux

Right.  There's actually quite a bit discussed in #mklinux about
various merge port stuff.  And cars.

josh

Re: How to port PReP to arch/powerpc?

[David Gibson]

On Wed, Aug 22, 2007 at 07:29:56AM -0500, Josh Boyer wrote:
> On Wed, 22 Aug 2007 14:50:07 +0300 (EEST)
> Meelis Roos <mroos@linux.ee> wrote:
> 
> > It seems no one cares for arch/ppc any more but the move to powerpc was 
> > not finished completely (PReP subarch was not migrated but sees users, I 
> > do not know about the user base of the other subarches). So I have been 
> > thinking about migrating PReP support to arch/powerpc myself since I use 
> > it.
> 
> The merge is still on-going.  So it's not "finished" at all.
> 
> > Any general guidelines or specific hints about that? I have looked 
> > around in the code and some pieces are clearly PReP specific (setup, 
> > pci, boot) but others seem wuite a bit mixed up with other subarches.
> 
> David Gibson and Rob Landley had a quite interesting discussion about
> PReP last night on IRC.  You might want to contact them and see if they
> came to any conclusions.

Yes, my draft PReP support patch, tweaked this morning to build again
(changes roughly identical to Rob Landley's patch, I believe) is at:
	http://ozlabs.org/~dgibson/home/tmp/prep-support

-- 
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

Re: How to port PReP to arch/powerpc?

[Sven Luther]

On Wed, Aug 22, 2007 at 02:50:07PM +0300, Meelis Roos wrote:
> It seems no one cares for arch/ppc any more but the move to powerpc was 
> not finished completely (PReP subarch was not migrated but sees users, I 
> do not know about the user base of the other subarches). So I have been 
> thinking about migrating PReP support to arch/powerpc myself since I use 
> it.
> 
> Any general guidelines or specific hints about that? I have looked 
> around in the code and some pieces are clearly PReP specific (setup, 
> pci, boot) but others seem wuite a bit mixed up with other subarches.

I don't have much time for this right now, but i am interested in
helping out in a PReP arch/powerpc port, as this would allow debian to
drop the arch/ppc -prep flavour. I have both a motorola and an IBM PReP
box here to play with and test.

Friendly,

Sven Luther