Request review of device tree documentation

[Benjamin Herrenschmidt]

On Fri, 2010-06-11 at 22:19 -1000, Mitch Bradley wrote:
> It seems that many of the differences at the CPU level can be determined 
> by looking at "coprocessor" registers.  For what purpose(s) do we need 
> to identify the core?  That will inform our choice of a core ID schema.

The primary thing I see would be architecture version compliance,
though this is better carried additionally via a binary field in
the header or a GPR at the entry point, to help the initial asm
code to setup the MMU etc... before getting into C code.

Cheers,
Ben.