In the Firefox OS documentation, one can read :
If your device isn't listed, you should stop right now and either help port B2G to your device or wait until someone else does it. We'd prefer it if you help out!
How should I help to port B2G to my device (Alcatel Orange Klif / OneTouch 4022D) ?
MDN has a full guide for beginning a new port of Firefox OS to a specific device:
https://developer.mozilla.org/en-US/Firefox_OS/Developing_Firefox_OS/Porting
There's a similar question here:
Porting Firefox OS to Android device