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

[Alex Zeffertt]

On Aug 17, 2012 4:26 PM, "Lukasz Majewski" <l.majewski at samsung.com> wrote:
>
> 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.
>

Ah yes. I remember hitting that problem myself with the openrd board gig
eth driver. And that does appear to have been resolved as you say.

Thanks for the explanation.

Alex
> >
> > TIA,
> >
> > Alex
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>
>
>
> --
> Best regards,
>
> Lukasz Majewski
>
> Samsung Poland R&D Center | Linux Platform Group