[PATCH] arm: proc-v7: pc phy addresses before disable MMU

[Per Forlin]

PC runs virtual addresses when calling cpu_v7_reset(). The MMU
is switched off and "mov pc, r0" sets pc back to
virtual addresses even though the MMU is switched off.
This will result in a crash if the pipeline delay after
MMU disable is one instruction. To prevent this set PC
to physical addresses before disabling the MMU.

Signed-off-by: Per Fransson <per.xx.fransson at stericsson.com>
Signed-off-by: Per Forlin <per.forlin at stericsson.com>
---
 arch/arm/mm/proc-v7.S |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 9049c07..f26e831 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -64,6 +64,7 @@ ENDPROC(cpu_v7_proc_fin)
  */
 	.align	5
 ENTRY(cpu_v7_reset)
+	sub	pc, pc, #PAGE_OFFSET+4		@ go to physical addresses
 	mrc	p15, 0, r1, c1, c0, 0		@ ctrl register
 	bic	r1, r1, #0x1			@ ...............m
  THUMB(	bic	r1, r1, #1 << 30 )		@ SCTLR.TE (Thumb exceptions)
-- 
1.6.3.3