A lot of the closed source boot Roms look to be SOC vendor code: they'd buy a subsystem ip from someone and have to redistribute the code for that thing but don

A lot of the closed source boot Roms look to be SOC vendor code: they'd buy a subsystem ip from someone and have to redistribute the code for that thing but don't have the source licensed. Unlikely that will ever be cleared up since the IP vendors are very precious about their stuff