I wrote a while back about Sun’s decision to GPL the design for its Niagara T1 chip.
As Larry Lessig reports, there is now a company in Europe that is shipping a modified design targeted at embedded systems. Check out the Simply RISC homepage!
Also, the problem of having to use proprietary software to work on the chip design seems to be solved. This is an excerpt from the SimplyRISC homepage:
The development environment of the S1 Core can run on any Unix/(GNU/)Linux box and no commercial tools are required, since both simulation and synthesis of the Verilog files of the design can be performed using the free software Icarus Verilog.
Way, way cool.