pxa: turn icache off in cpu_init_crit()

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>

diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index 2e3f65ee8493ddd061e7fe869827226b8937dd7e..2e623b108354b0d2cced8d49f1e1bb6daae4a48a 100644 (file)
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -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 */