[PATCH] [ARM] pxa: enable L2 if present in XSC3

[Haojian Zhuang]

Check whether L2 is present or not in XSC3. If it's present, enable L2
immediately.

Disabling L2 after L2 is enabled that would result in unpredicatable behavior
of XSC3 processor.

Signed-off-by: Haojian Zhuang <haojian.zhuang at marvell.com>
---
 arch/arm/mm/proc-xsc3.S |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 33515c2..8fbe21f 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -406,6 +406,11 @@ __xsc3_setup:

 	adr	r5, xsc3_crval
 	ldmia	r5, {r5, r6}
+
+	mrc	p15, 1, r0, c0, c0, 1		@ get L2 present information
+	ands	r0, r0, #0xf8
+	orrne	r6, r6, #(1 << 26)		@ enable L2 if present
+
 	mrc	p15, 0, r0, c1, c0, 0		@ get control register
 	bic	r0, r0, r5			@ ..V. ..R. .... ..A.
 	orr	r0, r0, r6			@ ..VI Z..S .... .C.M (mmu)
-- 
1.5.6.5