bazel_rules_hdl

Hardware Description Language (Verilog, VHDL, Chisel, nMigen, etc) with open tools (Yosys, Verilator, OpenROAD, etc) rules for Bazel (https://bazel.build)

Project Vision

hdl/bazel_rules_hdl is a project that is designed to be a one stop shop for doing hardware dev with bazel.

Through iteration we hope to eventually become an official bazel ruleset for doing HDL development.

So that includes;

• Supporting designs targeting FPGAs and ASIC.
• Supporting software targeted to run on this custom hardware.
• Supporting testing via simulation, formal verification, emulation and others.

Having rules that can take RTL and be chained to emit GDSII (Sky130/FOSS-PDKs), but that can also be used to target FPGAs and soft CPUs. We want to take advantage of remote builders to accelerate verification with massively parallel clusters. Using the open source community's tools like Yosys, OpenROAD, Verilator, Surelog etc.

The vision of this is that this repository enables bazel test //mychip/... and bazel build //mychip:gds and in 10 minutes you have verified and emitted a fabricatable design even for the most complex designs.

Testing

For testing pull requests please run:

bazel_rules_hdl$ python tools/test_everything.py

Note: bazel test ... does not run the tests in Bazel "remote" repositories, and bazel_rules_hdl bundles together support for several remote repositories -- this script serves as a helper for testing them all explicitly.