mpc744x, Marvell mv6446x kernel guidance please

Mark A. Greer mgreer at
Tue Jul 29 02:51:08 EST 2008

On Thu, Jul 10, 2008 at 10:46:49PM -0500, Stephen Horton wrote:
> Hello folks,
> In a current work project, I have inherited a compactPCI board that has
> an mpc7447/7448 powerpc processor as well as a Marvell system
> controller, model mv64462 (stripped down mv64460). The board has a
> somewhat working Gentoo Linux port running on it from long ago and a
> company far far away (kernel version 2.6.9 built using arch/ppc). To
> prepare for an upcoming deployment, I would like to bring the OS
> up-to-date on this board with a newer kernel (targeting Gentoo 2008),
> but I am unsure of the approach to take. I am a software developer, but
> normally do not work on kernel porting / board integration. I have
> researched the arch/ppc to arch/powerpc migration, but I'm a bit
> intimidated by the 'new' device tree symantics and other changes to the
> stream. Here are some questions:
> 1.	Is it possible with the 2.6.24 (Gentoo 2008) kernel to still use
> arch/ppc for this platform architecture?  I've tried to get this to
> compile, but am having trouble with files from arch/powerpc getting
> pulled in; then I read some comments (from I believe this forum) that
> indicated that arch/ppc is not longer supposed to compile

arch/ppc is gone now.  You should spend you effort working in

> 2.	Does anyone have example code for this platform architecture?
> Any freebees I could use for creating my device tree?

You can use prpmc2800 as an example.

> 3.	Any advice of any kind?

Its not as bad as it looks.  Just dig into it and don't give up.


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