This repository contains all tools that I require for a fully open source FPGA toolchain for Lattice FPGAs. I keep these tools in a repo because major distributions don't package them up-to-date or at all, and because they are under heavy development.
This repo is optimized for use on linux, and can be used after build.shing it.
From the source-directory that you want to compile, just run environment.sh and you can use the tools.
This repo contains submodules for:
- https://github.com/cliffordwolf/yosys.git -- verilog compiler -- http://www.clifford.at/yosys/ , http://www.clifford.at/yosys/files/yosys_manual.pdf
- https://github.com/cseed/arachne-pnr.git -- legacy place&route
- https://github.com/YosysHQ/nextpnr -- new place&route
- https://github.com/cliffordwolf/icestorm.git -- reverse-engineered bitstream format and tools for lattice iCE40 -- see http://www.clifford.at/icestorm/
- https://github.com/SymbiFlow/prjtrellis.git --reverse-engineered bitstream format and tools for lattice ECP5
Other tools one might want to give a try:
- icestudio -- https://github.com/FPGAwars/icestudio -- GUI workflow for verilog, optimized for yosys/lattice FPGAs
- iverilog -- verilog compiler for simulations (usually packaged by distro)
- gtkwave -- show output of compiled verilog simulations (usually packaged by distro)
Alternatives to this repo:
Related links:
- Lattice iCEstick Evaluation Kit:
http://www.latticesemi.com/icestick - Lattice iCE40 LP/HX Family Datasheet:
http://www.latticesemi.com/~/media/LatticeSemi/Documents/DataSheets/iCE/iCE40LPHXFamilyDataSheet.pdf - Pinout:
http://www.pighixxx.com/test/portfolio-items/icestick/