[U-Boot] [Patch 0/8] add at91 SoC access with c structures

[Jens Scharsig <js_at_ng@scharsoft.de>]

Hello,

on request by Wolfgang, I have try to implement SoC access for AT91
arch with c structures. Additional I have add support for AT91RM9200
in at91 tree.
I need to switch to a different project for more than half a year.
So I think, it's time to publish the result.

What this Patch set do:

* add's the new temporary CONFIG_AT91_LEGACY to all board configs
  that not converted by this patch
* add's a warning to all files, that not converted by this patch
* add's the support for AT91RM9200 in at91 tree
* add's c stucture SoC defines
* convert all files cpu/../at91 to use c stucture SoC access
* move the at gpio access to a real driver
* add's at91_emac (AT91RM9200) network driver (NET_MULTI)
* add's a new board (eb_cpux9k2) which demonstrates, how to use
  boards with AT91RM9200 cpu in at91 arch tree
* convert following board: at91sam9263ek

this patch was tested with at91sam9263ek, eb_cpux9k2 and
eol board with at91sam9261 cpu. 

What is to do:

* convert all at91sam boards to new soc access
* convert all at91rm9200 boards from AT91RM9200 arch to at91 arch
* convert driver to new soc access
* remove legacy code, if all boards and drives are ready

I hope there are somewhere a some volunteers to make the next steps.

Best regards

Jens Scharsig