[U-Boot] [PATCH] wandboard: add pxe support, set default boot command like highbank

[Tom Rini]

On Tue, Aug 06, 2013 at 01:58:22PM -0300, Otavio Salvador wrote:
> On Tue, Aug 6, 2013 at 1:54 PM, Stephen Warren <swarren at wwwdotorg.org> wrote:
> >> How can someone 'overwrite' the default environment from system or
> >> when generating a FIT image?
> >
> > If U-Boot is running, you can get back to the default environment by
> > running exactly the commands you wrote below.
> >
> > If you're flashing U-Boot, you could force it to use the default
> > environment when it boots by erasing/corrupting the copy of the
> > environment that's stored in flash (or wherever ENV_IS points) at the
> > same time that you flash the new U-Boot binary.
> >
> > The question of how to get the default environment when generating a FIT
> > image doesn't make sense; generating a FIT image of something (kernel,
> > initrd, DTB?) is entirely unrelated to the environment content that
> > U-Boot uses when running.
> 
> Ok but when I do env -f -d -a it uses the built-in environment as
> default. How can I 'change' this default without rebuilding U-Boot
> binary?

What you want (and I'm not saying this works today) would be:
load ... $addr otavios-sane-env.txt
env import -t --reset-to $addr

Where --reset-to cleared the current environment and set it to only the
valid env found at $addr.

-- 
Tom
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