Dear Nikita,
In message 5110AC16.9000306@compulab.co.il you wrote:
That's true, but when md traps you simply restart the board and everything's fine. If displaying a splash screen traps- you're stuck.
In such a case you have forgotten to test your settings before activation these as default, i. e. you have committed a sin that carries with it its own punishment ;-)
There's a difference between a bicycle with no training wheels and one that falls apart when you turn it the wrong way.
It's not the bicyle falling apart, it's the rider falling down (with the risk of getting hurt) - and yes, exactly this happens in real life when you disobey basic caution.
The same will happen for other stupid settings, too - like setting a bootdelay of 0 with a non-working bootcmd; or incorrect update commands that blow away U-Boot, or ...
This is a boot loader, and there are no seatbelts or airbags; nothing prevents you to shoot yourself into the foot.
Best regards,
Wolfgang Denk