[coreboot] Is it possible to use an Ivy Bridge CPU in an Sandy Bridge laptop?

[Iru Cai]

Hi,

Ivy Bridge processor can be installed on a 6 series motherboard on desktop.
However, Intel didn't give official support for snb laptops to install an
ivb processor. Did anyone tried to insall an ivb processor into an snb
machine (I think ThinkPad T520 is a good choice.) to check whether coreboot
can support this?

Thanks,
Iru