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ECP5 Toolchain

This repository contains prebuilt versions of all the tools you will need to develop for an ECP5 board.

Usage

Download the latest release for your platform and extract it somewhere on your disk. Then set your PATH:

  • MacOS: export PATH=[path-to-bin]:$PATH
  • Linux: export PATH=[path-to-bin]:$PATH
  • Windows Powershell: $ENV:PATH = "[path-to-bin];" + $ENV:PATH
  • Windows cmd.exe: PATH=[path-to-bin];%PATH%

To confirm installation, run a command such as nextpnr-ecp5 or yosys.

What's included

This contains almost everything you'll need to develop on Fomu:

  • yosys -- synthesis
  • nextpnr-ecp5 -- place-and-route
  • dfu-util -- upload bitstream to the FPGA
  • python3 -- required for nextpnr-ecp5 and to build litex projects
  • riscv-gcc -- compile code for Risc-V CPUs, such as the Risc-V softcore
  • wishbone-tool -- access the Wishbone debug bus over USB or SPI

Additionally, the macOS and Windows versions include make.

It is strongly recommended that you install git to manage repositories and check out code, though it is not strictly necessary.

About

Open-source ECP5 toolchain, including synthesis, place-and-route, and Risc-V GCC

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