Here's a starting point for a possible Python P2 tool chain.
It converts an object file to the P2 base64 download protocol and loads @ 3Mbaid.
It's bare bones at present but things like multi P2 support can added as we move forward.
Give it a try!
Python P2 loader V0.1 Ozpropdev 2018
Prop_Chk = Prop_Ver E
HUBSET Ok, max clock speed enabled
Update: 14th Jan 2019 - Version 1.2 with P2 auto detect and better command line usage.