Not exactly, I just want to find out if the machine has some password before booting, perhaps that can do the job
from the Open Solaris 10 eeprom manpage
Firmware security level (options: none, command, or
full). If set to command or full, system will prompt for
PROM security password. Defaults to none.This property
has no special meaning or behavior on x86 based systems.
From fedora 11 dmidecode manpage
24 Hardware Security
Of course, anny comment of this approach will be greatly appreciated. I will keep on my research, and will post any thing i find out.