SMP support for ZEDBOARD

[Ian Lepore]

On Wed, 2014-04-30 at 17:19 +0200, Bernd Walter wrote:
> On Wed, Apr 30, 2014 at 07:53:28AM -0700, Thomas Skibo wrote:
> > 
> > The more I think about this, this is probably the way to go rather than 
> > risk people bricking their Parallella trying to reprogram the QSPI 
> > flash.  Cram a new u-boot into a uImage and then have the new u-boot 
> > load ubldr.  I'll try to prototype this on the Zedboard.
> 
> Aren't there problems when u-boot starts with a system, which
> already has more initialisation done as usual?
> E.g. first u-boot enabled cache already.

I was wondering about that too, some of the "first time init" type
things that u-boot does may not work if it tries to do them over.  The
caches should get turned off if the program is launched with bootm or
bootelf, but won't be if it's launched with "go xxxxxxxx", but you can
work around that using "dcache off; dcache flush; go xxxxxxx".

-- Ian