Almost all the tooling in FPGAs is proprietary because the vendors don't provide the information needed to develop open source tools around them. They'll also o

Almost all the tooling in FPGAs is proprietary because the vendors don't provide the information needed to develop open source tools around them. They'll also often obsfucate the bitstreams to make the reverse engineering process more difficult. Progress is being made but it is a slow and painstaking process.