Re: @ Palpy: I think we speak of different things??
From a page in the Libreboot project:
"ME firmware versions 6.0 and later, which are found on all systems with an Intel Core i3/i5/i7 CPU and a PCH, include 'ME Ignition' firmware that performs some hardware initialization and power management. ... Due to the signature verification, developing free replacement firmware for the ME is basically impossible.
Since you quote Libreboot (as I have myself done in several posts), don't forget that Intel is not alone. AMD is equally evil with its equivalent PSP.