[PATCH] ARM: explicitly disable BTB on ixp2350
We don't enable the BTB on the ixp2350 as that can cause weird crashes (erratum #42.) However, some bootloaders enable the BTB, which means that we have to disable the BTB explicitly. Found thanks to Tom Rini. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -427,12 +427,13 @@ __xsc3_setup:
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#endif
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mcr p15, 0, r0, c1, c0, 1 @ set auxiliary control reg
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mrc p15, 0, r0, c1, c0, 0 @ get control register
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bic r0, r0, #0x0200 @ .... ..R. .... ....
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bic r0, r0, #0x0002 @ .... .... .... ..A.
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orr r0, r0, #0x0005 @ .... .... .... .C.M
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#if BTB_ENABLE
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bic r0, r0, #0x0200 @ .... ..R. .... ....
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orr r0, r0, #0x3900 @ ..VI Z..S .... ....
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#else
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bic r0, r0, #0x0a00 @ .... Z.R. .... ....
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orr r0, r0, #0x3100 @ ..VI ...S .... ....
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#endif
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#if L2_CACHE_ENABLE
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