SymbiFlow examples ================== This repository provides example FPGA designs that can be built using the SymbiFlow open source toolchain. The examples target the Xilinx Artix-7 and the QuickLogic EOS S3 devices. The repository includes: * `eos-s3 `_ - Example FPGA designs for the QuickLogic EOS S3 series of parts: * Verilog code * Pin constraints files * Timing constraints files * Makefiles for running the SymbiFlow toolchain * `xc7 `_ - Example FPGA designs for the Xilinx 7 series of parts: * Verilog code * Pin constraints files * Timing constraints files * Makefiles for running the SymbiFlow toolchain * `.travis.yml <.travis.yml>`_ - Travis CI configuration file Clone this repository --------------------- If you have not already done so, clone this repository and ``cd`` into it: .. code:: bash sudo apt install git git clone https://github.com/SymbiFlow/symbiflow-examples.git && cd symbiflow-examples Prerequisites ------------- Install the following prerequisites before using symbiflow-examples: * For Ubuntu: .. code:: bash :name: install-req-ubuntu apt update && apt install -y wget * For CentOS: .. code:: bash :name: install-req-centos yum install -y wget which Toolchain installation ---------------------- This section describes how to install the toolchain. This procedure is divided in three steps: - Installing the Conda package manager - Choosing an installation directory - Downloading the architecture definitions and installing the toolchain 1. Conda .. code:: bash :name: wget-conda wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O conda_installer.sh 2. Choose the install directory The install directory can either be in your home directory such as ``~/opt/symbiflow`` or in a system directory such as ``/opt/symbiflow``. If you choose a system directory, you will need root permission to perform the installation, and so you will need to add some ``sudo`` commands to the instructions below. .. code:: bash INSTALL_DIR=~/opt/symbiflow 3. Toolchain * For the Artix-7 devices: .. code:: bash :name: xc7-setup-toolchain bash conda_installer.sh -b -p $INSTALL_DIR/xc7/conda source "$INSTALL_DIR/xc7/conda/etc/profile.d/conda.sh" conda env create -f xc7/environment.yml conda activate xc7 mkdir -p $INSTALL_DIR/xc7/install wget -qO- https://storage.googleapis.com/symbiflow-arch-defs/artifacts/prod/foss-fpga-tools/symbiflow-arch-defs/presubmit/install/1049/20201123-030526/symbiflow-arch-defs-install-05bd35c7.tar.xz | tar -xJC $INSTALL_DIR/xc7/install mkdir -p $INSTALL_DIR/xc7/install/share/symbiflow/arch wget -qO- https://storage.googleapis.com/symbiflow-arch-defs/artifacts/prod/foss-fpga-tools/symbiflow-arch-defs/presubmit/install/1049/20201123-030526/symbiflow-xc7a50t_test.tar.xz | tar -xJC $INSTALL_DIR/xc7/install/share/symbiflow/arch wget -qO- https://storage.googleapis.com/symbiflow-arch-defs/artifacts/prod/foss-fpga-tools/symbiflow-arch-defs/presubmit/install/1049/20201123-030526/symbiflow-xc7a100t_test.tar.xz | tar -xJC $INSTALL_DIR/xc7/install/share/symbiflow/arch conda deactivate * For the EOS S3 devices: .. code:: bash :name: eos-s3-setup-toolchain bash conda_installer.sh -b -p $INSTALL_DIR/eos-s3/conda source "$INSTALL_DIR/eos-s3/conda/etc/profile.d/conda.sh" conda env create -f eos-s3/environment.yml conda activate eos-s3 wget -qO- https://quicklogic-my.sharepoint.com/:u:/p/kkumar/EWuqtXJmalROpI2L5XeewMIBRYVCY8H4yc10nlli-Xq79g?download=1 | tar -xJ -C $INSTALL_DIR/eos-s3/ conda deactivate Build Example Designs --------------------- With the toolchain installed, you can build the example designs. The example designs are provided in separate directories: * ``xc7`` directory for the Artix-7 devices * ``eos-s3`` directory for the EOS S3 devices Example designs for the Artix-7 devices: **************************************** Before building any example, set the installation directory to match what you set it to earlier, .. code:: bash export INSTALL_DIR=~/opt/symbiflow and prepare the environment: .. code:: bash :name: xc7-prepare-env # adding symbiflow toolchain binaries to PATH export PATH="$INSTALL_DIR/xc7/install/bin:$PATH" source "$INSTALL_DIR/xc7/conda/etc/profile.d/conda.sh" conda activate xc7 To build the counter example, run any or all of the following commands: .. code:: bash :name: xc7-counter pushd xc7/counter_test && TARGET="arty_35" make && popd pushd xc7/counter_test && TARGET="arty_100" make && popd pushd xc7/counter_test && TARGET="basys3" make && popd To build the picosoc example, run the following commands: .. code:: bash :name: xc7-picosoc pushd xc7/picosoc_demo && make && popd To build the litex example, run the following commands: .. code:: bash :name: xc7-litex mkdir xc7/litex_demo pushd xc7/litex_demo wget https://raw.githubusercontent.com/enjoy-digital/litex/master/litex_setup.py chmod +x litex_setup.py ./litex_setup.py init ./litex_setup.py install wget https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz tar -xf riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz export PATH=$PATH:$PWD/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14/bin/ pushd litex/litex/boards/targets && ./arty.py --toolchain symbiflow --cpu-type vexriscv --sys-clk-freq 80e6 --no-ident-version --build && popd popd To build the linux-litex-demo example, run the following commands: .. code:: bash :name: xc7-linux pushd xc7/linux_litex_demo && make && popd pushd xc7/linux_litex_demo && TARGET="arty_100" make && popd Example design for the EOS S3 devices: ************************************** Before building any example, set the installation directory to match what you set it to earlier, .. code:: bash export INSTALL_DIR=~/opt/symbiflow and prepare the environment: .. code:: bash :name: eos-s3-prepare-env export PATH="$INSTALL_DIR/eos-s3/install/bin:$PATH" source "$INSTALL_DIR/eos-s3/conda/etc/profile.d/conda.sh" conda activate eos-s3 To build the example, run the following command: .. code:: bash :name: eos-s3-counter pushd eos-s3/btn_counter && make && popd