New MACH Addition

[Robert Schwebel]

Hi Sascha,

On Mon, Apr 18, 2011 at 08:33:13PM +0200, Sascha Hauer wrote:
> On Mon, Apr 18, 2011 at 12:17:47PM -0600, Marko Milutinovic wrote:
> > I recently ported barebox to a platform using an old AT91 chip
> > (at91m55800a, ARM7TDMI core). There is already a MACH_AT91 folder
> > but this chip is sufficiently different that I just made a new
> > folder MACH_AT91_legacy. This was just a test project for me to get
> > familiar with using barebox.
> >
> > I'm just wondering if there is any value in me merging in the code
> > for this? I realize it's a pretty old chipset, but I'm finding
> > barebox very useful and would like to contribute to it.
>
> I never even heard of this chip. I think adding support for it should
> be ok, but we might remove it in the future should non trivial
> architecture changes become necessary and nobody cares for updating
> this.

We should somewhere have a board with this chip in the archive:
http://www.phytec.de/de/produkte/module-im-ueberblick/phycore/produktdetails/p/phycore-at91m55800a.html

Marko, are you working with a recent mainline kernel on this cpu? I'm
wondering about the mmu-less state of the kernel. Havn't tried for some
time.

rsc
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