[U-Boot] PPC4xx without CONFIG_NET_MULTI

[Stefan Roese <sr@denx.de>]

Hi Ben,

On Tuesday 28 April 2009, Ben Warren wrote:
> Hi Stefan (and anybody else that can answer),
>
> I'm trying to understand why some 4xx boards use CONFIG_NET_MULTI and a
> few don't.  Is there a technical reason why these few can't (limited
> storage or something else) or are they just older?

Yes, they are just older. Nobody found the time to clear this up till now.

> There are 47 boards 
> in-tree that use CONFIG_PPC4xx_EMAC and the following 18 use the older
> net API.
> ---
>
> bwarren at bwarren-bldsrv:~/src/u-boot-net/include/configs$ grep -l
> PPC4xx_EMAC *
>
> | xargs grep -L CONFIG_NET_MULTI
>
> AR405.h
> CPCIISER4.h
> CRAYL1.h
> csb272.h
> csb472.h
> DP405.h
> ERIC.h
> EXBITGEN.h
> HUB405.h
> JSE.h
> MIP405.h
> OCRTC.h
> ORSG.h
> PIP405.h
> sbc405.h
> W7OLMC.h
> W7OLMG.h
> WUH405.h
> ---
>
> I'd like to move all over to CONFIG_NET_MULTI,

That would be great. I thought about this as well but didn't find the time yet 
to do so.

> which in itself is 
> trivial since the EMAC driver supports both APIs, but am wary of
> breaking something.

The reason for this (as far as I overlook things) is simply historical. Nobody 
found the time to clear this up till now. Chances are good that such a 
transitions doesn't break anything. I can't test though, since I don't have 
access to any of those boards. I added Matthias to cc, he is maintaining some 
of those boards. Maybe he could test if you provided a patch for this?

Thanks.

Best regards,
Stefan

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