linux support for freescale e5500 core?
benh at kernel.crashing.org
Fri Sep 17 08:03:48 EST 2010
On Thu, 2010-09-16 at 15:44 -0600, Chris Friesen wrote:
> On 09/16/2010 03:39 PM, Scott Wood wrote:
> > On Thu, 16 Sep 2010 14:06:37 -0600
> > Chris Friesen <chris.friesen at genband.com> wrote:
> >> We're looking at maybe doing some work with an e5500-based system. Is
> >> there any support existing/planned for this core?
> > Check with whoever you'd be getting the hardware from about a BSP.
> > And yes, it should be supported upstream at some point.
> We haven't settled on a vendor yet, so I was just wondering in general
> what the story was around support.
Well, the "core" support for 64-bit BookE is upstream (and has been for
a little while) so +/- specific tweaks FSL may have done and the usual
SoC/board support, it shouldn't be too far off.
> Right. We currently use a 970-series cpu and have implemented a
> per-process flag to indicate whether 32-byte mode is needed or not.
> We'd have to do something similar with the new cpu.
Sounds like a candidate for upstreaming the patch :-)
> One last question--can you comment on the speed of an e5500 relative to
> a 970 for integer operations?
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