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[ARM] pxa: enable L2 if present in XSC3

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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>
This commit is contained in:
Haojian Zhuang 2009-12-30 10:02:57 -05:00 committed by Eric Miao
parent dc8601a224
commit 548c6af462
1 changed files with 7 additions and 0 deletions
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7
arch/arm/mm/proc-xsc3.S
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@ -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)