NxM is done. We took it down last year. 
It's no longer available via coreboot.org

If you're still interested in giving it a try, 


https://github.com/rminnich/NxM




On Sat, Mar 15, 2014 at 10:49 AM, Gregg Levine <gregg.drwho8@gmail.com> wrote:
Hello!
I just tried to retrieve the latest NXM code via git. Instead of
seeing the usual things happen when the tool started working, I saw
instead an HTTP 502 error message. It translated it as bad gateway.
And even trying to click on the link to bring it up in the browser
(Chrome) caused that to happen.
-----
Gregg C Levine gregg.drwho8@gmail.com
"This signature fought the Time Wars, time and again."

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