2.6.15 failure on power4 iSeries

[will schmidt]

attempting to boot current kernels on a power4 iSeries doesnt work.  have tried both the powerpc-git tree and the torvalds-git tree.

OS/400 RefCode is "C200 82FF".  (which means nothing to me :-)

no console output at all.

did a bunch of git bisects in the torvalds tree to try and narrow this down.
came up with this:
-----
cc5d0189b9ba95260857a5018a1c2fef90008507 is first bad commit
diff-tree cc5d0189b9ba95260857a5018a1c2fef90008507 (from 9cf84d7c97992dbe5360b241327341c07ce30fc9)
Author: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Date:   Tue Dec 13 18:01:21 2005 +1100

     [PATCH] powerpc: Remove device_node addrs/n_addr

     The pre-parsed addrs/n_addrs fields in struct device_node are finally
     gone. Remove the dodgy heuristics that did that parsing at boot and
     remove the fields themselves since we now have a good replacement with
     the new OF parsing code. This patch also fixes a bunch of drivers to use
     the new code instead, so that at least pmac32, pseries, iseries and g5
     defconfigs build.

     Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
     Signed-off-by: Paul Mackerras <paulus at samba.org>

:040000 040000 9946b49ba087766d624c0e3aec0aacf10def46d5 c3ace2665f7af6cecedb4af1e91e8f7a297c1810 M      arch
:040000 040000 50d697c7cd7d7fe83708da8d984552156220eb6b b1c4acfc8a51b0ddd033b94b77c8f1c13cac3a7b M      drivers
:040000 040000 c147e5b58c5e209cfa1e0e23fde1e8dfeebc74cb 74f710b4ce19a09b2d1ec786e623c7b533b6e099 M      include
:040000 040000 069d365401f8661df52ffbdc4efad2c760199228 becfd9ac59e0c409a860f75620619640f41a5c5a M      sound
----

I dont see any obvious iSeries reference in this patch, but have only given it a brief look.    Any suggestions on how to track this down further?

-Will