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RE: Cirrus Logic EP93XX ARM9 support


On Saturday, September 19, 2009 11:48 AM, Evgeniy Dushistov wrote:
> On Wed, Jun 10, 2009 at 02:15:17PM -0400, H Hartley Sweeten wrote:
>> Hello all,
>> 
>> Does anyone know the status of the Cirrus Logic EP93XX ARM9 support?
>> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000739
>> 
>> Was the copyright assignment to the FSF completed?  If so, would it
>> be possible to at least get the new file pieces of the patch into
>> CVS so that they can be cleaned up?  The diff appears fairly clean
>> except for a couple of issues.  Following are the files in the patch.
>> 
>
> If you are working on this, better support of ep93xx (I used ep9315),
> we can merge our forces. Recently I start working with custom
> board which used ep9315, and see several possible improvements of
> current patch:
>
> - macroses/functions to work with egpio 
> - make the way of configuration of MMU more easy, like in others
> arm9 ports, not in asm code as now

Hello,

The original patch still needs to get merged into CVS.  I think
Brian Austin at Cirrus finally got the information sent off to
FSF.  Hopefully that process does not take forever...

I have been maintaining a local branch of the port for my use
for quite a while.  It's current to the last CVS update I did
on 9/16/2009.  The port works fine but my source would need some
cleanup in order to get merged into the CVS, mostly for style
issues.

I have looked at implementing a gpio system for the ep93xx.  I'm
just not sure where this would go into ecos.  I have also cleaned
up the SPI access functions in the Ethernet driver and started
looking at a true SPI driver.  I did dump all the Cirrus pkgconf
files a while back and just put in what I needed for my board.
The original files will need to be added back and cleaned up.

Most of my changes to the original port were done simply because
I couldn't follow what Cirrus was doing ;-).  My need is only
for RedBoot but I would be glad to help with anything that I can.
A lot of ecos I really don't "get" so bear with me...

If you want I can send you a diff of what I have right now.  It
might not all be "right" but RedBoot does at least work.

Regards,
Hartley


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