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pxa: turn icache off in cpu_init_crit()

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The comment in the low-level initialization function cpu_init_crit() says that
the caches are being disabled, but (oddly) the icache is actually turned on.
This is probably not a good idea prior to relocating code, so this patch turns
it off.  Tested on the pxa270.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
This commit is contained in:
Mike Dunn 2013-06-17 10:47:28 -07:00 committed by Marek Vasut
parent 3497d43215
commit 097d86d098
1 changed files with 1 additions and 2 deletions
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3
arch/arm/cpu/pxa/start.S
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@ -208,10 +208,9 @@ cpu_init_crit:
* disable MMU stuff and caches
*/
mrc p15, 0, r0, c1, c0, 0
bic r0, r0, #0x00002300 @ clear bits 13, 9:8 (--V- --RS)
bic r0, r0, #0x00003300 @ clear bits 13:12, 9:8 (--VI --RS)
bic r0, r0, #0x00000087 @ clear bits 7, 2:0 (B--- -CAM)
orr r0, r0, #0x00000002 @ set bit 2 (A) Align
orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache
mcr p15, 0, r0, c1, c0, 0
mov pc, lr /* back to my caller */