On 31 December 2016 at 10:25, Stefan Wallentowitz
On 30.12.2016 20:42, Brad Walker wrote:
> I've noticed there is a port, with bitstreams, of the Low-Risc processor to
> the Nexy Artix-7 FPGA board.
> Has anyone done any work to get the processor instantiated on the Xilinx
> Zynq family (i.e. Zedboard/Microzed) of FPGAs?
the first release of lowRISC was actually moving away from the Zynq
platform, because the original Rocket chip was (is?) tethered to the ARM
on that. For that we moved to a logic only FPGA. I think moving back to
the Zynq and use the AXI (for example with Xilibus or so) to communicate
with the debug interface instead of the Rocket's HTIF is a neat project.
If you or anyone else want to undertake it, I would be happy to assist.
I think it would be interesting to reuse the in-kernel drivers for
virtio devices to support the PS-side (ARM-side) devices such as
ethernet, framebuffer etc.