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nextpnr portable FPGA place and route tool
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README.md

nextpnr -- a portable FPGA place and route tool

Supported Architectures

  • iCE40

Prequisites

  • CMake 3.3 or later
  • Modern C++11 compiler, clang recommended
  • Qt5 or later (qt5-default for Ubuntu 16.04)
  • Python 3.5 or later, including development libraries (python3-dev for Ubuntu)
  • Boost libraries (libboost-dev or libboost-all-dev for Ubuntu)
  • Icestorm, with chipdbs installed in /usr/local/share/icebox

Building

  • Use CMake to generate the Makefiles (only needs to be done when CMakeLists.txt changes)
    • For a debug build, run cmake -DCMAKE_BUILD_TYPE=Debug .
    • For a debug build with HX1K support only, run cmake -DCMAKE_BUILD_TYPE=Debug -DICE40_HX1K_ONLY=1 .
    • For a release build, run cmake .
  • Use Make to run the build itself
    • For all targets, just run make
    • For just the iCE40 CLI binary, run make nextpnr-ice40
    • For just the iCE40 Python module, run make nextpnrpy_ice40
    • Using too many parallel jobs may lead to out-of-memory issues due to the significant memory needed to build the chipdbs

Running

  • To run the CLI binary, just run ./nextpnr-ice40
  • The Python module is called nextpnrpy_ice40.so. To test it, run PYTHONPATH=. python3 python/python_test.py