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diff --git a/docs/getting_started/prerequisites.rst b/docs/getting_started/prerequisites.rst new file mode 100644 index 0000000..3723294 --- /dev/null +++ b/docs/getting_started/prerequisites.rst @@ -0,0 +1,181 @@ +Prerequisites +============= + +This document describes the software requirements for building |TF-A| for +AArch32 and AArch64 target platforms. + +It may possible to build |TF-A| with combinations of software packages that are +different from those listed below, however only the software described in this +document can be officially supported. + +Build Host +---------- + +|TF-A| can be built using either a Linux or a Windows machine as the build host. + +A relatively recent Linux distribution is recommended for building |TF-A|. We +have performed tests using Ubuntu 20.04 LTS (64-bit) but other distributions +should also work fine as a base, provided that the necessary tools and libraries +can be installed. + +.. _prerequisites_toolchain: + +Toolchain +--------- + +|TF-A| can be built with any of the following *cross-compiler* toolchains that +target the Armv7-A or Armv8-A architectures: + +- GCC >= 11.3.Rel1 (from the `Arm Developer website`_) + + You will need the targets ``arm-none-eabi`` and ``aarch64-none-elf`` for + AArch32 and AArch64 builds respectively. + +- Clang >= 14.0.0 +- Arm Compiler >= 6.18 + +In addition, a native compiler is required to build the supporting tools. + +.. note:: + The software has also been built on Windows 7 Enterprise SP1, using CMD.EXE, + Cygwin, and Msys (MinGW) shells, using version 5.3.1 of the GNU toolchain. + +.. note:: + For instructions on how to select the cross compiler refer to + :ref:`Performing an Initial Build`. + +.. _prerequisites_software_and_libraries: + +Software and Libraries +---------------------- + +The following tools are required to obtain and build |TF-A|: + +- An appropriate toolchain (see :ref:`prerequisites_toolchain`) +- GNU Make +- Git + +The following libraries must be available to build one or more components or +supporting tools: + +- OpenSSL >= 1.1.1 (v3.0.0 to v3.0.6 highly discouraged due to security issues) + + Required to build the cert_create, encrypt_fw, and fiptool tools. + + .. note:: + + If using OpenSSL 3, older Linux versions may require it to be built from + source code, as it may not be available in the default package repositories. + Please refer to the OpenSSL project documentation for more information. + +The following libraries are required for Trusted Board Boot and Measured Boot +support: + +- mbed TLS == 2.28.1 (tag: ``mbedtls-2.28.1``) + +These tools are optional: + +- Device Tree Compiler (DTC) >= 1.4.6 + + Needed if you want to rebuild the provided Flattened Device Tree (FDT) + source files (``.dts`` files). DTC is available for Linux through the package + repositories of most distributions. + +- Arm `Development Studio (Arm-DS)`_ + + The standard software package used for debugging software on Arm development + platforms and |FVP| models. + +- Node.js >= 16 + + Highly recommended, and necessary in order to install and use the packaged + Git hooks and helper tools. Without these tools you will need to rely on the + CI for feedback on commit message conformance. + +Package Installation (Linux) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +If you are using the recommended Ubuntu distribution then you can install the +required packages with the following command: + +.. code:: shell + + sudo apt install build-essential git + +The optional packages can be installed using: + +.. code:: shell + + sudo apt install device-tree-compiler + +Additionally, to install a version of Node.js compatible with TF-A's repository +scripts, you can use the `Node Version Manager`_. To install both NVM and an +appropriate version of Node.js, run the following **from the root directory of +the repository**: + +.. code:: shell + + curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash + exec "$SHELL" -ic "nvm install; exec $SHELL" + +.. _Node Version Manager: https://github.com/nvm-sh/nvm#install--update-script + +Supporting Files +---------------- + +TF-A has been tested with pre-built binaries and file systems from `Linaro +Release 20.01`_. Alternatively, you can build the binaries from source using +instructions in :ref:`Performing an Initial Build`. + +.. _prerequisites_get_source: + +Getting the TF-A Source +----------------------- + +Source code for |TF-A| is maintained in a Git repository hosted on +TrustedFirmware.org. To clone this repository from the server, run the following +in your shell: + +.. code:: shell + + git clone "https://review.trustedfirmware.org/TF-A/trusted-firmware-a" + +Additional Steps for Contributors +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +If you are planning on contributing back to TF-A, there are some things you'll +want to know. + +TF-A is hosted by a `Gerrit Code Review`_ server. Gerrit requires that all +commits include a ``Change-Id`` footer, and this footer is typically +automatically generated by a Git hook installed by you, the developer. + +If you have Node.js installed already, you can automatically install this hook, +along with any additional hooks and Javascript-based tooling that we use, by +running from within your newly-cloned repository: + +.. code:: shell + + npm install --no-save + +If you have opted **not** to install Node.js, you can install the Gerrit hook +manually by running: + +.. code:: shell + + curl -Lo $(git rev-parse --git-dir)/hooks/commit-msg https://review.trustedfirmware.org/tools/hooks/commit-msg + chmod +x $(git rev-parse --git-dir)/hooks/commit-msg + +You can read more about Git hooks in the *githooks* page of the Git +documentation, available `here <https://git-scm.com/docs/githooks>`_. + +-------------- + +*Copyright (c) 2021-2022, Arm Limited. All rights reserved.* + +.. _Arm Developer website: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/downloads +.. _Gerrit Code Review: https://www.gerritcodereview.com/ +.. _Linaro Release Notes: https://community.arm.com/dev-platforms/w/docs/226/old-release-notes +.. _Linaro instructions: https://community.arm.com/dev-platforms/w/docs/304/arm-reference-platforms-deliverables +.. _Development Studio (Arm-DS): https://developer.arm.com/Tools%20and%20Software/Arm%20Development%20Studio +.. _Linaro Release 20.01: http://releases.linaro.org/members/arm/platforms/20.01 |