[U-Boot] SPL framework re-design

[Wolfgang Denk]

Dear Aneesh V,

In message <4DFA0759.2060606 at ti.com> you wrote:
>
> >> Can you please extend this to show the SoC/board directories etc. I
> >> guess they will go under spl/ and not under each media.
> >
> > Correct, i. e. please add for example:
> >
> > 	spl/board/freescale/mx31pdk/
> > 	spl/board/freescale/mx31pdk/Makefile
> > 	...
> 
> I thought we were going to have cpu directory SoC directory etc in this
> directory structure.

If needed, yes.  This example showed a board directory.

> > Can we not use the objects that get normally built, with the existing
> > Makefiles?
> 
> But where do you add the reference to SoC level and CPU level object
> files? Which library do you make them part of? I thought the board
> level Makefile was meant only to build the board specific library.

Sorry, I don;t understand your questions (because I don't understand
which problem you see).

Yes, the board directories will contain only board specific stuff.

> For example, let's say we have board 'a' and 'b' of same SoC(soc).
> Unless we have a SoC directory we may have to do something like this.

Why should we not have a SoC dir?

> >> Also, at least some files will have to be built separately for SPL
> >> because they have conditional compilation with CONFIG_PRELOADER kind of
> >> flags.
> >
> > Please let's check where this is needed, and how we can handle this.
> > I'd really like to get rid of this symlinking.
> 
> One case is start.S. We need a simplified start.S for SPL(no
> relocation, no interrupt handling etc).

OK.

> There are places where CONFIG_PRELOADER is used today. But maybe, these
> could be avoided it we try.

We should carefully check these.

Best regards,

Wolfgang Denk

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