From 0c3891e2c95c5a7e7a9bfeecb57d5ebb5bfc5707 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20F=C3=A4rber?= <andreas.faerber@web.de>
Date: Sat, 16 Oct 2010 17:36:15 +0000
Subject: [PATCH] ppc: Fix stack setup
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The exception stack was always set up 64 KiB below the ROM,
ignoring hash table alignment.
Align the stack pointer appropriately.

v2:
* Drop buggy distinction based on PVR value since the previous patch
  unifies alignment. Suggested by Segher Boessenkool.

Cc: Alexander Graf <agraf@suse.de>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@907 f158a5a8-5612-0410-a976-696ce0be7e32
---
 arch/ppc/qemu/start.S | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/ppc/qemu/start.S b/arch/ppc/qemu/start.S
index d0d51b5..0775536 100644
--- a/arch/ppc/qemu/start.S
+++ b/arch/ppc/qemu/start.S
@@ -334,9 +334,13 @@ GLOBL(_entry):
 
 	addis	r1, r3, -16		/* ramsize - 1MB */
 
-	/* setup exception stack */
+	/* setup hash table */
 
 	addis	r1, r1, -1		/* - 64 kB */
+	clrrwi	r1, r1, 5*4		/* & ~0xfffff */
+
+	/* setup exception stack */
+
 	mtsprg0	r1
 
 	/* setup stack */