[U-Boot] WARNING: Caches not enabled on openrd based board

[Lukasz Majewski]

On Fri, 17 Aug 2012 12:16:56 +0100
Alex Zeffertt <azeffertt at cambridgesys.com> wrote:

> Hi U-Booters,
> 
> 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
> 
> I am running the latest code from git with a small number of changes
> to make it work with our hardware.
> (In particular we have had to rewrite
> board/Marvell/openrd/kwbimage.cfg.)
> 
> My question is: does the warning about caches affect only U-Boot (in
> which case I don't mind) or will it also affect Linux?

As fair as I know, it will only affect u-boot. If I remember correctly,
caches are disabled (and fulshed) just before passing execution to
linux.

Those caches are disabled, since some time ago it turns out, that many
drivers had problems with unaligned buffers allocation.  

> 
> TIA,
> 
> Alex
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-- 
Best regards,

Lukasz Majewski

Samsung Poland R&D Center | Linux Platform Group