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

[Otavio Salvador]

On Tue, Aug 6, 2013 at 6:37 PM, Tom Rini <trini at ti.com> wrote:
> 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.

and a way to do it from build host (OE, for example) without from runtime.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://projetos.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750