Propel is a RISC-V design tool exclusively for Lattice.

To implement RISC-V on Lattice FPGAs, use Propel and Diamond/Radiant.

Propel also consists of the Propel SDK and the Propel Builder.

The Propel SDK lets you create, build, and debug software projects.

Propel Builder allows you to design and generate SoC projects, including RISC-V, for integration into FPGAs.

The implementation guide explains how to create an SoC project and a software project, as well as how to configure debugging.