about linux bios on newer boards...

[Tamer Higazi]

Hi!
I'd like to buy a new Computer and i am using Linux continuesly. I have 
asked myself if a Linuxbios could run on a newer board.

Either i am asking myself, if a linuxbios could halt (run down) my linux 
machine if i push the power switch on my computer as it is allready 
possible on WinXP.

For any help and answer thank you

Tamer