From: Janice M. Girouard <jgirouar@redhat.com>
Subject: [RHEL 5.1 FEATURE] bz# 228091 2/2 [PPC]: Handle Power6 partition  modes
Date: Wed, 18 Apr 2007 17:06:26 -0400 (Eastern Daylight Time)
Bugzilla: 228091
Message-Id: <Pine.WNT.4.64.0704181703130.7600@IBM-3MTQI3AXJFW>
Changelog: [PPC64] Handle Power6 partition modes (2)



RHBZ#:
------
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228091

Description:
------------

2 of 2 patches required to support power6 partition modes.

This patch tells the firmware that we can handle POWER6 compatibile mode.  It adds the 'logical" PVR values that the kernel uses to communicate with the firmware.

RHEL Version Found:
-------------------
feature enhancement for cell to be supported in 5.1.

Upstream Status:
----------------
This code is accepted upstream and can be viewed in the 2.6.20.7 kernel.

Test Status:
------------
Tested by Manoj Iyer of IBM using the at_plat.c code attached to the bz.

This patch is dependent on 31034 (which must be applied first).
This patch is builds and compiles cleanly using kernel-2.6.18-15.el5.src.rpm.


Proposed Patch:
----------------
Please review and ACK for RHEL 5.1
-

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 396109a..46cf326 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -643,6 +643,7 @@ static void __init early_cmdline_parse(void)
 static unsigned char ibm_architecture_vec[] = {
 	W(0xfffe0000), W(0x003a0000),	/* POWER5/POWER5+ */
 	W(0xffff0000), W(0x003e0000),	/* POWER6 */
+	W(0xffffffff), W(0x0f000002),	/* all 2.05-compliant */
 	W(0xfffffffe), W(0x0f000001),	/* all 2.04-compliant and earlier */
 	5 - 1,				/* 5 option vectors */