Re: [Trisquel-users] Coreboot

[vitacell]

You can configure and compile Coreboot blobless (no non-free), but the  
problem is the hardware. X220-X230-X220t, are great computers, but those  
won't boot without some Intel ME code.

So, yes, Coreboot is free software but people can build it with blobs.
Libreboot only want stable version and fully non-blob software.