Add FuseSoC support

[olofk]

This adds support for building the simulation model, linting and running synthesis of OpenC910 using FuseSoC, as well as making it easier to integrate in other FuseSoC-based designs.

To test this, first install FuseSoC

pip3 install fusesoc

Create an empty directory, enter it and add openc910 as a library

fusesoc library add openc910 https://github.com/T-head-Semi/openc910

(or if openc910 is already available locally, run)

fusesoc library add openc910 /path/to/openc910/repo

Check that FuseSoC can find the core

fusesoc core list

...and see some basic info...

fusesoc core show openc910

Build the simulation model with the default tool (icarus)

fusesoc run --target=sim openc910

...or with xsim...

fusesoc run --target=sim --tool=xsim openc910

...or Questa/ModelSim...

fusesoc run --target=sim --tool=modelsim openc910

Should hopefully also work with rivierapro, vcs, ncsim etc

Lint the code using Verilator

fusesoc run --target=lint openc910

...or run synthesis with Vivado...

fusesoc run --target=synth openc910

To target a specific part, run e.g. with

fusesoc run --target=synth openc910 --part=xc7a100tcsg324-1

Other synthesis tools have not yet been tested

Signed-off-by: Olof Kindgren olof.kindgren@gmail.com

[olofk]

ping

[CLAassistant]

All committers have signed the CLA.

[olofk]

Are there any steps remaining after signing the CLA?