[U-Boot] Password protection of U-Boot command line

[Mike Frysinger]

On Friday 10 February 2012 09:12:10 Frans Meulenbroeks wrote:
> E.g. if you deliver boards/systems with u-boot on it and you do not
> want customers to enter u-boot (e.g. by accident or because they want
> to hack the board), but you would allow authorized service personnel
> to access the board.

i've seen people in the past ship their boards with u-boot defaulting to 
silent mode and the autostop key set to a ctrl sequence.  that addresses 
pretty much addresses this.
-mike
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