Hi, I wrote a patch which adds support for the PowerPC 405 hard core in Xilinx Virtex2-Pro and Virtex4 FPGAs. It is not targeted to a specific board. The only assumption on hardware is that the FPGA design implements the Xilinx UARTLITE IP core. You can download it from http://www.michaelgeng.de/newlib/xilinx-powerpc.patch Michael