how easy to add extra config for NAND-less beagle?

[Jean-Christophe PLAGNIOL-VILLARD]

On 11:39 Thu 15 Nov     , Robert P. J. Day wrote:
> On Thu, 15 Nov 2012, Sascha Hauer wrote:
> 
> > Hi Robert,
> >
> > On Thu, Nov 15, 2012 at 09:36:37AM -0500, Robert P. J. Day wrote:
> > >
> > >   returning to playing with barebox after lengthy hiatus and i asked
> > > an equivalent question on the u-boot list, let's see if it's relevant
> > > here.
> > >
> > >   i did a regular configure and build for my beagle xM (rev C) which,
> > > unlike the beagle classic, has no NAND flash:
> > >
> > > $ make omap3530_beagle_xload_defconfig ; make
> > > $ make omap3530_beagle_defconfig ; make
> > >
> > > then copied MLO and barebox.bin to an appropriate card and, lo, it
> > > booted nicely and i'm currently sitting in barebox:
> > >
> > >   barebox at Texas Instrument's Beagle:/ version
> > >
> > >   barebox 2012.10.0-00283-gd65d9df #2 Thu Nov 15 06:45:21 EST 2012
> > >
> > > thing is, this build has a good deal of NAND-related functionality
> > > that is of no use whatsoever on the current beagle xMs, so i'm
> > > interested in how little work it would take to add an extra config
> > > that would deselect everything related to NAND.  (obviously, having
> > > that functionality there doesn't *hurt*, but i'm planning to use
> > > barebox in my new embedded linux courses and it would be nice to be
> > > able to build for an xM and have it *totally* correspond to the actual
> > > hardware.)  it shouldn't be hard -- simply deselecting anything
> > > related to NAND, MTD or JFFS2 should do the trick.
> >
> > Disable MTD support and if you want also the protect/erase commands:
> >
> > make menuconfig
> >
> > Drivers                         --->
> >   [ ] Memory Technology Device (MTD) support  --->
> >
> > commands                        --->
> >   flash                           --->
> >     [ ] protect/erase
> >
> > Saves you around 35Kb of binary space
> 
>   yup, i'm testing that shortly, but my question was more along the
> lines of, rather than having to disable all NAND-related
> functionality *manually*, how easy/worthwhile would it be to create an
> additional make target that reflects a beagle *without* NAND flash?
> 
>   one significant difference between a classic beagle and a current xM
> is the total lack of NAND flash, and that's not a minor difference.
> it means you can remove all barebox functionality related to that --
> NAND routines and support, MTD stuff, JFFS2(?) support, and so on.
> this could be automated by creating a couple new configs, say:
> 
>   make dm3730_beaglexm_xload_defconfig
>   make dm3730_beaglexm_defconfig
> 
> so that the result really matches the underlying board.
> 
>   is this worth doing?  it would seem to be fairly easy, i can whip
> something up and test it.
> 
> rday
> 
> p.s.  there are other significant differences as well -- onboard
> ethernet, 4-port USB hub.  it seems to me that there is enough of a
> difference to warrant a separate configuration.  thoughts?
no can you detect it?

on at91 we have teh 9x5ek which can a 5 different soc with different daughter

which we detetct

Best Regards,
J.
> 
> -- 
> 
> ========================================================================
> Robert P. J. Day                                 Ottawa, Ontario, CANADA
>                         http://crashcourse.ca
> 
> Twitter:                                       http://twitter.com/rpjday
> LinkedIn:                               http://ca.linkedin.com/in/rpjday
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