Commit 548c6af4 authored Dec 30, 2009 by Haojian Zhuang Committed by Eric Miao Jan 01, 2010

[ARM] pxa: enable L2 if present in XSC3



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@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

parent dc8601a2

arch/arm/mm/proc-xsc3.S

+7 −0

Original line number	Diff line number	Diff line
		@@ -407,6 +407,13 @@ __xsc3_setup:

		adr r5, xsc3_crval
		ldmia r5, {r5, r6}

		#ifdef CONFIG_CACHE_XSC3L2
		mrc p15, 1, r0, c0, c0, 1 @ get L2 present information
		ands r0, r0, #0xf8
		orrne r6, r6, #(1 << 26) @ enable L2 if present
		#endif

		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)

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