There has been significant progress in reverse engineering bitstream formats of some FPGAs which has allowed the development of open source FPGA workflows. If y

There has been significant progress in reverse engineering bitstream formats of some FPGAs which has allowed the development of open source FPGA workflows. If you want to know more, take a look at: Icestorm http://www.clifford.at/icestorm/ http://www.clifford.at/icestorm/ Yosys http://www.clifford.at/yosys/ http://www.clifford.at/yosys/ NextPNR https://github.com/YosysHQ/nextpnr https://github.com/YosysHQ/nextpnr SymbiFlow https://symbiflow.github.io/ https://symbiflow.github.io/