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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
This commit is contained in:
Andreas Färber
2010-10-16 17:36:15 +00:00
committed by Blue Swirl
parent 7a86728b19
commit 0c3891e2c9
1 changed files with 5 additions and 1 deletions
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6
arch/ppc/qemu/start.S
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@@ -334,9 +334,13 @@ GLOBL(_entry):
addis r1, r3, -16 /* ramsize - 1MB */ addis r1, r3, -16 /* ramsize - 1MB */
/* setup exception stack */ /* setup hash table */
addis r1, r1, -1 /* - 64 kB */ addis r1, r1, -1 /* - 64 kB */
clrrwi r1, r1, 5*4 /* & ~0xfffff */
/* setup exception stack */
mtsprg0 r1 mtsprg0 r1
/* setup stack */ /* setup stack */