[commit] r907 - trunk/openbios-devel/arch/ppc/qemu

[repository service]

Author: blueswirl
Date: Sat Oct 16 19:36:15 2010
New Revision: 907
URL: http://tracker.coreboot.org/trac/openbios/changeset/907

Log:
ppc: Fix stack setup

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 
Cc: Segher Boessenkool 
Signed-off-by: Andreas Färber 
Signed-off-by: Blue Swirl

Modified:
   trunk/openbios-devel/arch/ppc/qemu/start.S

Modified: trunk/openbios-devel/arch/ppc/qemu/start.S
==============================================================================
--- trunk/openbios-devel/arch/ppc/qemu/start.S	Sat Oct 16 19:36:12 2010	(r906)
+++ trunk/openbios-devel/arch/ppc/qemu/start.S	Sat Oct 16 19:36:15 2010	(r907)
@@ -334,9 +334,13 @@

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 */