[RFC,PATCH 0/2] Allow late mdesc detection

[Nicolas Pitre]

On Mon, 12 Jul 2010, Jeremy Kerr wrote:

> Hi Nicolas,
> 
> > The fundamental problem with those patches is that we actually want to 
> > move in the opposite direction for the eventual support of multiple SOCs 
> > in the same kernel, i.e. rely on the machine ID -> mdesc to determine 
> > the right debug addresses at run time and eventually make the addruart 
> > into something that is not hardcoded at compile time.
> 
> Sure, I think that's where we're going in general, but I think the debug
> stuff is an exception - we want that up as early as possible, and with
> as few dependencies on other bits of code as possible.
[...]
> I also think it's good to only specify the debug parameters in one place
> (addruart), rather than have to provide them in adduart *and* the mdesc.

OK I'm convinced.

I'll comment on the actual implementation separately.

PS: I still believe in a per SOC machine ID for DT despite of this, at 
    least for now.  If we end up not needing it eventually then it could 
    be ignored which is a far easier thing to do (start to ignore stuff) 
    than bite our fingers because we prematurely ditched it.


Nicolas