Is linuxbios GPL ?

[Christopher Bergeron]

Is the linuxbios code GPL?  Does the GPL allow for inclusion into other 
operating systems?  The reason I'm asking is because I'm very concerned 
that some other OS maker (ahem: MSFT) may take this codebase and try to 
create a MSFT version.  Is this possible or am I worrying needlessly?  I 
kow MSFT steals code (BSD tcp/ip stack comes to mind) and I'm wondering 
what provisions are out there to protect this amazing project.

And while I'm at it, kudos to all the developers!
-Chris