43 lines
1.8 KiB
ReStructuredText
43 lines
1.8 KiB
ReStructuredText
Initial Repository Setup
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========================================================
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Requirements
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Chipyard is developed and tested on Linux-based systems.
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.. Warning:: It is possible to use this on macOS or other BSD-based systems, although GNU tools will need to be installed; it is also recommended to install the RISC-V toolchain from ``brew``.
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.. Warning:: Working under Windows is not recommended.
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Checking out the sources
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------------------------
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After cloning this repo, you will need to initialize all of the submodules.
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.. code-block:: shell
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git clone https://github.com/ucb-bar/chipyard.git
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cd chipyard
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./scripts/init-submodules-no-riscv-tools.sh
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Building a Toolchain
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------------------------
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The `toolchains` directory contains toolchains that include a cross-compiler toolchain, frontend server, and proxy kernel, which you will need in order to compile code to RISC-V instructions and run them on your design.
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Currently there are two toolchains, one for normal RISC-V programs, and another for Hwacha (``esp-tools``).
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For custom installations, Each tool within the toolchains contains individual installation procedures within its README file.
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To get a basic installation (which is the only thing needed for most Chipyard use-cases), just the following steps are necessary.
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.. code-block:: shell
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./scripts/build-toolchains.sh riscv-tools # for a normal risc-v toolchain
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# OR
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./scripts/build-toolchains.sh esp-tools # for a modified risc-v toolchain with Hwacha vector instructions
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Once the script is run, a ``env.sh`` file is emitted that sets the ``PATH``, ``RISCV``, and ``LD_LIBRARY_PATH`` environment variables.
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You can put this in your ``.bashrc`` or equivalent environment setup file to get the proper variables.
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These variables need to be set for the ``make`` system to work properly.
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