Daniel Ng wrote:

We are migrating our PowerPC 8272-based board from 2.6.14 to 2.6.27.

One of the big changes is the need for a Device Tree for bootup.

So far, my bootup looks like the below (using u-boot).

I am just using arch/powerpc/boot/cuboot-824x.c 

cuboot-824x is for 8240, 8245, and similar chips.  You want cuboot-pq2.

When I change the settings in mpc8272ads.dts and do a fresh recompile, the 
settings do not change. However, if I use another cuboot*.c file, I get a 
different set of printed settings eg. 2 ethernet ports instead of 1. This is 
fine, but I don't see where in the cuboot*.c file these settings are 
specified. Can someone suggest where these might be?

The cuboot file defines things like TARGET_CPM2 or TARGET_824x, which 
influences the compilation of the bd_t struct.  It's messy, which is why 
we use device trees now. :-)

-Scott