[PATCH] ppc: Add support for AMCC Taishan 440GX eval board

[Kumar Gala]

On Feb 12, 2007, at 6:46 PM, David Gibson wrote:

> On Mon, Feb 12, 2007 at 02:41:36PM -0600, Kumar Gala wrote:
>>
>> On Feb 12, 2007, at 2:23 PM, Benjamin Herrenschmidt wrote:
>>
>>> On Mon, 2007-02-12 at 14:16 -0600, Jon Loeliger wrote:
>>>> So, like, the other day Benjamin Herrenschmidt mumbled:
>>>>>
>>>>> Note that there are still things that we might want to change. For
>>>>> example, I think we really should look into adding a macro  
>>>>> mecanism
>>>>> and/or an include mecanism to dtc so that we can do things like
>>>>> #include
>>>>> <ibm440gp.dtc> to get the base processor/SoC definition and then
>>>>> "overlay" some properties on top of it (like emac phy mode etc...)
>>>>
>>>> What do people prefer here?  Straight CPP pre-run?
>>>
>>> CPP pre-run has issue, notably due to the usage of "#" in property
>>> names.
>>
>> You can get around that by invoking cpp with the right flags,  I
>> looked at doing this a while back and had it working.
>
> Umm.. which flags?

cpp -undef -P -x assembler-with-cpp

>>>> Direct support built into dtc to do file-inclusion, macros?
>>>
>>> We aren't sure yet, though David might have ideas.
>>
>> Would be nice for simple math as well (addition, subtraction, bitwise
>> ops, and shifts).  For example was thinking that having some macro's
>> around the PCI dev node's would make it a bit more readable to mere
>> mortals.
>
> Yes.  Adding an expression model would be more complex though.

Is there somewhere we can grab one from?

- k