Yep, the same goes for any BT, WiFi or storage controller chip. You can download the specs for most protocols, you might even be able to the get datasheet for t

Yep, the same goes for any BT, WiFi or storage controller chip. You can download the specs for most protocols, you might even be able to the get datasheet for the controllers, but writing a new (FOSS) firmware for the chip would be a huge undertaking.