85xx FDT updates?

[Kumar Gala]

On Apr 25, 2006, at 2:14 PM, Andy Fleming wrote:

>
> On Apr 25, 2006, at 13:48, Eugene Surovegin wrote:
>
>> On Tue, Apr 25, 2006 at 01:29:34PM -0500, Brent Cook wrote:
>>>> ....
>
>>>> Providing compatibility for non-flat-tree firmware. This doesn't
>>>> mean
>>>> keeping arch/ppc.
>>>
>>> Would it be possible to create the device tree in the kernel and
>>> then jump
>>> into the normal entry point? We need some sort of translation shim
>>> between
>>> the normal kernel and whatever oddball method firmware X chooses
>>> to hand-off
>>> to the kernel.
>>
>> Yes. This was suggested numerous number of times. Kumar, for some
>> reason which I don't understand, keeps ignoring this.
>>
>> And yes, I think person who breaks compatibility is the one who  
>> should
>> be doing this work :).
>
> I think there's some confusion here (at least, I'm confused), so let
> me see if I have this right:
>
> 1) Kumar is advocating the eventual removal of support for booting
> the 85xx CDS and 85xx ADS boards without a flat-device tree
>
> 2) Eugene and Dan say this will break systems that are already  
> deployed
>
> 3) Kumar says that the 85xx CDS and ADS systems are reference
> platforms, and therefore not meant for deployment.

I'd say production instead of deployment.

> 4) Eugene implies that removal of 85xx CDS and ADS support from arch/
> ppc should be accompanied by some sort of compatibility options for
> booting arch/powerpc Linux from an old u-boot
>
> Do I have this right?
>
> Oh, and 5) Kumar implies that anyone who buys a repackaged CDS system
> is a sucker, and should be parted from his or her money with all
> possible speed.  :)

(as a production system).

I think everything else is correct.

- kumar