My EVB is Rangeley Mohon peak.
I was successfuly build and boot the coreboot on my EVB.
But, not running the GbE interface.
So, I was try to find the mailing list . and Got a some threads.
1. Message for GbE(This
is perfectly same that my issue)
https://www.coreboot.org/pipermail/coreboot/2015-January/079074.html
=> But this mail is not include detail procedure.(some link
a brokened.)
Anyway. got a important thing. That "Must need a
descriptor.bin".