IIRC, BAP is on github; it might well be as simple as forking it, and doing a search/replace to change the architecture specified in the scripts.
I might have a look myself when i have a moment.
(EDIT) - following up on Julian's observation on his attempt, the scripts seem to be mainly APT based, so it's likely to just be a matter of fine-tuning them rather than needing the fullblown architecture change I'd envisioned.
73
Phil
2E0HGU