Re: Xilinx PowerPC

["Grant Likely" <grant.likely@secretlab.ca>]

On Thu, Feb 21, 2008 at 10:50 AM, Stephen Neuendorffer
<stephen.neuendorffer@xilinx.com> wrote:
>  >     Step 2).
>  >              the code in arch/powerpc/???? is the devicetree equvalent
>  to
>  >              arch/ppc/platforms/4xx/xilinx_ml410.c
>  http://git.xilinx.com/linux-2.6-xlnx.git contains a preliminary stab at
>  the bootcode for Virtex.  I've been using this for a while with
>  ARCH=powerpc.  There isn't really much need for board specific platform
>  code: This should (I think) be handled by the device tree.  All of this
>  is still pretty preliminary at the moment however.  The big problem with
>  the boot code in the Xilinx tree is that you need to be able to allocate
>  memory in order to parse the device tree in order to figure out how much
>  memory you have.  I just haven't rewritten the code to use libfdt, which
>  can query the device tree without memory allocation yet.  Grant has a
>  slightly different scheme in his tree, but it works as well.  Generally
>  I've been more focused on avoiding u-boot, whereas Grant has been using
>  u-boot exclusively, I think.

Actually, I'm not using u-boot at all.  I've reworked the 'raw' image
target to use libfdt and properly initialize the cache and stuff.
I'll be merging it in the .26 merge window.

Cheers,
g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.