80 lines
3.7 KiB
ReStructuredText
80 lines
3.7 KiB
ReStructuredText
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SymbiFlow Toolchain Examples for Xilinx 7 Series
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================================================
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#. ``counter`` - simple 4-bit counter driving LEDs. The design targets the `Basys3 board <https://store.digilentinc.com/basys-3-artix-7-fpga-trainer-board-recommended-for-introductory-users/>`__ and the `Arty board <https://store.digilentinc.com/arty-a7-artix-7-fpga-development-board-for-makers-and-hobbyists/>`__.
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#. ``picosoc`` - `picorv32 <https://github.com/cliffordwolf/picorv32>`__ based SoC. The design targets the `Basys3 board <https://store.digilentinc.com/basys-3-artix-7-fpga-trainer-board-recommended-for-introductory-users/>`__.
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#. ``linux_litex`` - `LiteX <https://github.com/enjoy-digital/litex>`__ based system with Linux capable `VexRiscv core <https://github.com/SpinalHDL/VexRiscv>`__. The design includes `DDR <https://github.com/enjoy-digital/litedram>`__ and `Ethernet <https://github.com/enjoy-digital/liteeth>`__ controllers. The design targets the `Arty board <https://store.digilentinc.com/arty-a7-artix-7-fpga-development-board-for-makers-and-hobbyists/>`__.
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The Linux images for the ``linux_litex`` example can be built following the `linux on litex vexriscv <https://github.com/litex-hub/linux-on-litex-vexriscv>`__ instructions.
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The ``linux_litex`` example is already provided with working Linux images.
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Setting up the toolchain
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------------------------
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.. toolchain_include_begin_label
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.. code:: bash
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INSTALL_DIR="/opt/symbiflow/xc7"
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bash conda_installer.sh -b -p $INSTALL_DIR/conda && rm conda_installer.sh
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source "$INSTALL_DIR/conda/etc/profile.d/conda.sh"
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conda env create -f xc7/environment.yml
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conda activate xc7
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wget -qO- https://storage.googleapis.com/symbiflow-arch-defs/artifacts/prod/foss-fpga-tools/symbiflow-arch-defs/presubmit/install/477/20200714-082108/symbiflow-arch-defs-install-8eb88e76.tar.xz | tar -xJ --one-top-level=$INSTALL_DIR/install
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conda deactivate
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.. toolchain_include_end_label
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Building the examples
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---------------------
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.. build_examples_include_begin_label
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Before building any example, prepare environment:
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.. code:: bash
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export INSTALL_DIR="/opt/symbiflow/xc7"
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# adding symbiflow toolchain binaries to PATH
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export PATH="$INSTALL_DIR/install/bin:$PATH"
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source "$INSTALL_DIR/conda/etc/profile.d/conda.sh"
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conda activate xc7
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git clone https://github.com/SymbiFlow/symbiflow-examples && cd symbiflow-examples
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To build the counter example, run the following commands:
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.. code:: bash
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pushd xc7/counter_test && make clean && TARGET="arty_50" make && popd
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pushd xc7/counter_test && make clean && TARGET="arty_100" make && popd
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pushd xc7/counter_test && make clean && TARGET="basys3" make && popd
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To build the picosoc example, run the following commands:
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.. code:: bash
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pushd xc7/picosoc_demo && make && popd
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To build the litex example, run the following commands:
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.. code:: bash
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wget https://raw.githubusercontent.com/enjoy-digital/litex/master/litex_setup.py
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chmod +x litex_setup.py
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./litex_setup.py init
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./litex_setup.py install
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wget https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz
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tar -xf riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz
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export PATH=$PATH:$PWD/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14/bin/
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pushd litex/litex/boards/targets && ./arty.py --toolchain symbiflow --cpu-type vexriscv --build && popd
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To build the linux-litex-demo example, run the following commands:
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.. code:: bash
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pushd xc7/linux_litex_demo && make && popd
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.. build_examples_include_end_label
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