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Commit 548c6af4 authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Eric Miao
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[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: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent dc8601a2

arch/arm/mm/proc-xsc3.S

+7 −0
Original line number Original line Diff line number Diff line
@@ -407,6 +407,13 @@ __xsc3_setup: 




	adr	r5, xsc3_crval

	adr	r5, xsc3_crval

	ldmia	r5, {r5, r6}

	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

	mrc	p15, 0, r0, c1, c0, 0		@ get control register

	bic	r0, r0, r5			@ ..V. ..R. .... ..A.

	bic	r0, r0, r5			@ ..V. ..R. .... ..A.

	orr	r0, r0, r6			@ ..VI Z..S .... .C.M (mmu)

	orr	r0, r0, r6			@ ..VI Z..S .... .C.M (mmu)