SMP support for ZEDBOARD

[Ian Lepore]

On Tue, 2014-04-29 at 23:03 +0200, Bernd Walter wrote:
> On Tue, Apr 29, 2014 at 10:57:41PM +0200, Bernd Walter wrote:
> > On Tue, Apr 29, 2014 at 01:21:05PM -0700, Thomas Skibo wrote:
> > > 
> > > 
> > > On 4/29/14, 11:34 AM, Bernd Walter wrote:
> > > >On Tue, Apr 29, 2014 at 09:40:53AM -0700, Thomas Skibo wrote:
> > > >>
> > > >>My parallella hasn't shipped but I think I'll get it mid-May.
> > > >
> > > >Backer or preorder?
> > > >I have a rather high 3k backer number.
> > > 
> > > Preorder #2081.  Mine is a 7010 and for some reason I think they are 
> > > going out later than 7020's.
> > 
> > Yes - they likely will :-(
> > They produced 7020 for the backers and I think there are also some
> > or all for preorders, but I didn't hear anything about 7010 in production
> > yet.
> > 
> > > >>It will probably require tweaking their version of u-boot.  I'm looking
> > > >>into that.  But the Zedboard image with a few modified boot files should
> > > >>work.
> > > >
> > > >Good to know that you get a parallella as well.
> > > >I still struggle a lot with all this Linux influence in u-boot.
> > > >I will never get those Linux thinking...
> > > >Things had been so much easier without u-boot on RM9200 and Warner
> > > >did a so clean, nice and understandable bootcode for it.
> > > >
> > > 
> > > I looked at their u-boot code and they don't have the CONFIG_API flag 
> > > necessary for ubldr to work.
> > > 
> > > I also didn't realize that the Parallella must boot FSBL/u-boot from the 
> > > QSPI flash.  I hate to require reprogramming the QSPI flash and risk 
> > > bricking the board.
> > 
> > Oh - interesting.
> > I thought it is just booting from SD and assumed we can use what you
> > did for the Zedboard to begin with.
> > Wonder why they added a flash chip, when they could have gone without.
> > Is this a pin strapping configuration, or something, which can be
> > changed?
> 
> Mmm - ok they have an QSPI Micro Flash in their BOM.
> Currently printing the schematics.
> 
> But my Zedboard also has SPI memory - Spansion S25FL256S.
> Don't know how it is used - didn't care about until now.
> 

I wonder if a chain-loader is possible?  Have the u-boot in flash load a
better u-boot from sdcard that has API and other goodies.

-- Ian