FPGA Builds

RadBuild models FPGA work as graph systems. A project can contain one FPGA system or an FPGA system that feeds Linux, firmware, software, package, and deployment systems.

RadBuild 0.2.2-beta.1 supports both vendor and open-source FPGA flows:

• fpga.vivado through Xilinx Vivado.
• fpga.litex through the existing LiteX provider path.
• fpga.ecp5 through OSS CAD Suite, currently focused on the Colorlight i9

ECP5 45F template.

Minimal Vivado System

{
  "radbuild_schema": "2.0",
  "radbuild_version": "0.2.2-beta.1",
  "project_name": "example-fpga",
  "systems": [
    {
      "id": "vivado",
      "type": "fpga.vivado",
      "provider": "vivado",
      "depends_on": [],
      "config": {
        "project_name": "example_hw",
        "part_number": "xc7a35tcsg324-1",
        "version": "2024.1"
      }
    }
  ],
  "connections": [],
  "artifacts": [],
  "deploy": [],
  "packages": {}
}

Commands

radbuild project validate --settings settings.json
radbuild graph --settings settings.json --json
radbuild build fpga --settings settings.json --dry-run --json-events

Expected dry-run output:

{"event":"build_started","systems":1}
{"event":"system_planned","system":"vivado","type":"fpga.vivado"}
{"event":"build_finished","status":"dry-run"}

Generated Evidence

RadBuild writes build metadata under .radmeta/, including artifact manifests and JSON event streams suitable for IDE integration.

Minimal ECP5 System

The ECP5 provider uses OSS CAD Suite for GHDL/Yosys/nextpnr/ecppack. The first packaged template targets the Colorlight i9 v7.2:

radbuild project create ./workspace \
  --non-interactive \
  --template fpga-ecp5-colorlight-i9 \
  --project-name colorlight-i9-smoke

radbuild project validate --settings ./workspace/colorlight-i9-smoke/settings.json
radbuild build fpga --settings ./workspace/colorlight-i9-smoke/settings.json --system colorlight-i9-ecp5

See ECP5 OSS CAD Suite Flow for setup and settings.