[RFC RFT PATCH] env: spl: filter the variables in default environment of SPL or TPL

[Wolfgang Denk]

Dear Patrick,

In message <20200318143602.23253-1-patrick.delaunay at st.com> you wrote:
> Use a new option CONFIG_SPL_ENV_VARS to filter the variables included
> in the default environment used in SPL (and TPL).
>
> That allows to reduce the size of default_environment[].

Sorry, but NAK.  we had this discussion a couple of times before.
It is mandatory that both SPL and U-Boot proper will use the _same_
environment, including the same default environment, or all kind of
havoc may result.  Just think of situations where Falcon Mode is
being used and SPL and U-Boot proper would be using different
settings.

If your default environment is too big for the SPL, then make it
smaller.  If you need additional settings in U-Boot, there are many
ways to load thise there.

Best regards,

Wolfgang Denk

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