[coreboot] Booting from MiniPCI on X230

[Matt B]

Hi,

Does anyone know of a payload (or payloads) that would allow booting from
an mSATA SSD within the second MiniPCI Express slot in an X230 thinkpad?

http://www.thinkwiki.org/wiki/Category:X230 notes that it's possible under
the stock BIOS when a HDD is not present, but is it possible under
Coreboot? Has anyone tried?

Thanks,
    -Matt