how to persistently save config values

[Sascha Hauer]

On Fri, Sep 29, 2017 at 02:31:40PM +0200, Giorgio Dal Molin wrote:
> Hi Sascha,
> 
> thank you for the answer.
> 
> I just experimented a bit with the environment and the nv vars
> and I think I'll go this way.
> 
> I was a bit surprised by the saveenv command though: my understanding
> of the (default) environment was that it was a read only blob
> hardcoded in the barebox image

Yes, it is.

> I thought if I want some new/dynamic
> env content to be saved for the next reboot I have to explicitly provide
> a storage disk/cf/mtd partition to the saveenv and then to the loadenv.

Yes, true. Normally the board code provides a storage place. In case of
UEFI the storage place is set to a EFI Variable in common/efi/efi.c:305

Sascha

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