[U-Boot] i.MX5/6 U-Boot: Cache enabling

[Marek Vasut]

> On 04.02.2012 11:18, Marek Vasut wrote:
> >> Let's discuss how to enable the i.MX5/6 caches in U-Boot:
> >> 
> >> On 03.02.2012 12:00, Stefano Babic wrote:
> >>> On 03/02/2012 11:18, Dirk Behme wrote:
> >> ...
> >> 
> >>>>> As your concerns are surely related to speed up the boot process,
> >>>>> IMHO we can focus efforts to add cache support for MX5 / MX6.
> >>>> 
> >>>> Ok, sounds good. Any idea what has to be done for this? Or what would
> >>>> be the steps for this?
> >>> 
> >>> As armv7 architecture, the MX can profit of the work already done for
> >>> other SOCs. Functions for enabling / disabling / invalidate caches are
> >>> already provided, in arch/arm/lib and arch/arm/cpu/armv7/cache_v7.c. So
> >>> at least for MX5/MX6.
> >>> 
> >>> But we should change MXC drivers to be cache-aware. At least the FEC
> >>> driver and MMC driver are known to not work when dcache is on.
> >> 
> >> Marek, Troy, Fabio: What do you think is needed to make the i.MX5/6
> >> FEC driver cache-aware?
> > 
> > I already have a partly finished implementation of FEC ethernet with
> > cache support somewhere on my drive.
> 
> Do you like to share this?
> 
> Many thanks and best regards

Try the attached stuff, it's likely crap and needs rebasing. It might give you 
some pointers as of how to handle this.

> 
> Dirk
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0045-FEC-Fix-to-work-with-data-cache-enabled.patch
Type: text/x-patch
Size: 14678 bytes
Desc: not available
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20120209/55443b2f/attachment.bin>