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authorDeepak Saxena <dsaxena@plexity.net>2006-05-30 14:36:49 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-05-30 20:33:20 -0700
commite6ed89ac9f5da16fea5111651b6de0ff0a76a5c2 (patch)
tree99f8afada42812b3ca5e1546584dc6e915b039f6 /arch/arm
parent9a8fca0499c611ab37b5c0d4481ca09d3f6e8101 (diff)
downloadop-kernel-dev-e6ed89ac9f5da16fea5111651b6de0ff0a76a5c2.zip
op-kernel-dev-e6ed89ac9f5da16fea5111651b6de0ff0a76a5c2.tar.gz
[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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mm/proc-xsc3.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 80873b3..8d32e21 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -427,12 +427,13 @@ __xsc3_setup:
#endif
mcr p15, 0, r0, c1, c0, 1 @ set auxiliary control reg
mrc p15, 0, r0, c1, c0, 0 @ get control register
- bic r0, r0, #0x0200 @ .... ..R. .... ....
bic r0, r0, #0x0002 @ .... .... .... ..A.
orr r0, r0, #0x0005 @ .... .... .... .C.M
#if BTB_ENABLE
+ bic r0, r0, #0x0200 @ .... ..R. .... ....
orr r0, r0, #0x3900 @ ..VI Z..S .... ....
#else
+ bic r0, r0, #0x0a00 @ .... Z.R. .... ....
orr r0, r0, #0x3100 @ ..VI ...S .... ....
#endif
#if L2_CACHE_ENABLE
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