[U-Boot] [PATCH v4 24/28] armv8/ls2085aqds: NAND boot support

[Scott Wood]

On Fri, 2015-03-20 at 20:18 -0400, Tom Rini wrote:
> On Fri, Mar 20, 2015 at 04:44:19PM -0500, Scott Wood wrote:
> > On Fri, 2015-03-20 at 17:37 -0400, Tom Rini wrote:
> > > On Fri, Mar 20, 2015 at 04:15:40PM -0500, Scott Wood wrote:
> > > 
> > > [snip]
> > > > It would also be nice to sort out loading the environment during SPL.
> > > 
> > > *ears perk up*.  Please elaborate :)  We have SPL environment support,
> > > we have SPL NAND Environment support today.  It doesn't get passed along
> > > to the running U-Boot and it's used for some limited cases (network and
> > > redundancy).  I'd like to hear about more and better ways of using it.
> > 
> > In common/spl/spl_nand.c, why does it only load the environment when
> > CONFIG_NAND_ENV_DST is defined, yet it never uses the value of
> > CONFIG_NAND_ENV_DST?  I also don't see any boards definind
> > CONFIG_NAND_ENV_DST (apparently the only one that ever used it was
> > smdk6400 which has been removed).
> > 
> > Is there some other way that the environment is supposed to be getting
> > loaded from NAND (rather than using the default environment) during SPL?
> 
> Yeah, it's loaded via env_init() being called (see spl_net.c or
> board/ti/).

The NAND version of env_init() does not access NAND.  It loads from
CONFIG_NAND_ENV_DST (but again, no board sets that) or from an embedded
environment.

-Scott