[U-Boot-Users] Delete all env vars except read onlys

[Stefan Roese <sr@denx.de>]

Hi Matthias,

On Tuesday 12 February 2008, Matthias Fuchs wrote:
> I am wondering if there is a way to delete all environment variables
> but not the readonly ones. The common way to delete all variables
> is to make the environment CRC invalid an do a reset. After reset
> a saveenv saves a default environment.
>
> What I want to do is to delete all variables (preferable from an autoscr
> script) but not the vendor variables like serial# and eth?addr.
>
> Wildcards in the setenv parameters would solve this issue,
> but chars like '*' or '?' are valid chars for environment variables.
>
> Any idea?

I don't know of such a solution. But such a "feature" would be handy 
sometimes. So perhaps this needs to get implemented as a new U-Boot command. 
But you should be careful. Such a command should require probably a password, 
to that users don't unintentionally erase their environment.

Best regards,
Stefan

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