Discontiguous Memory for MPC85xx Series

I am working on a separate project where there is a
discontiguous physical memory map . In looking at
solutions, it looks like the way to go is to=20
use something like a SPARSEMEM option.=20

FWIW, it even mentions something about discontinuous=20
memory in the Device Tree example about the 970 CPU
(Documentation/powerpc/booting-without-of.txt)

I am wondering if there is an implementation for
SPARSEMEM or DISCONTIGMEM being worked on in the=20
powerpc branch that I could use for the mpc85xx family?=20

Or does somebody have another suggestion on how=20
I would do this?

Thanks in advance you can suggest!

Tom Morrison
Principal S/W Engineer
Empirix, Inc (www.empirix.com)
tmorrison@empirix.com
(781) 266 - 3567