Gowin might just fill this niche. They are working with yosys on open source support as well. https://www.gowinsemi.com/en/product/detail/2/ https://www.gowins

Gowin might just fill this niche. They are working with yosys on open source support as well. https://www.gowinsemi.com/en/product/detail/2/ https://www.gowinsemi.com/en/product/detail/2/ http://www.clifford.at/yosys/cmd_synth_gowin.html http://www.clifford.at/yosys/cmd_synth_gowin.html