[U-Boot] environment reliability after "env default -f -a"

[Sam Protsenko]

Hi,

On Fri, Nov 16, 2018 at 3:20 PM Wolfgang Denk <wd at denx.de> wrote:
>
> Dear Sam,
>
> In message <CAKaJLVveZcdD-OCCRXCSJT0KVeWD1M9G+AqPxX9pSs4MRoLoaw at mail.gmail.com> you wrote:
> >
> > My question is: do we rely on environment to be the same after doing
> > "env default -f -a", comparing to environment after reboot? If so,
> > should I provide some sort of env callback to run corresponding
> > routines on "env default" event (like [1])?
>
> We should rather not rely on this.
>
> I think many boards contain board-specific code to manipulate the
> environment, especially on first boot (and resetting the env usually
> makes the next boot a "first" one).  You cannot scan all board
> specific code for such actions, or implement any generic handler for
> this.
>
> [Well yes, maybe one could rewrite all such board-specific code into
> some common "first boot handler" that could be called from a central
> place,  but who should do that?
>

Sounds logical. Thank you for confirming this, Wolfgang!

> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> As usual, this being a 1.3.x release, I haven't  even  compiled  this
> kernel yet. So if it works, you should be doubly impressed.
>       - Linus Torvalds in <199506181536.SAA10638 at keos.cs.Helsinki.FI>