From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Date: Sat, 18 Aug 2012 12:03:58 +0200
Subject: [U-Boot] WARNING: Caches not enabled on openrd based board
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Am 17.08.2012 13:16, schrieb Alex Zeffertt:
> I get the following warning when I boot our openrd based board:
>
>> U-Boot 2012.07 (Aug 17 2012 - 10:45:29)
>> OpenRD-Base
>>
>> SoC:   Kirkwood 88F6281_A1
>> DRAM:  128 MiB
>> WARNING: Caches not enabled
>> NAND:  512 MiB
The warning tells you that the plaform has no implementation of function 
enable_caches.

At the moment the l2cache and icache is enabled in function arch_misc_init.