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96 lines
4.0 KiB
96 lines
4.0 KiB
Trusted Firmware-A Documentation
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================================
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.. toctree::
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:maxdepth: 1
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:hidden:
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Home<self>
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about/index
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getting_started/index
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process/index
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components/index
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design/index
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plat/index
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perf/index
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security_advisories/index
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design_documents/index
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threat_model/index
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change-log
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glossary
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license
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Trusted Firmware-A (TF-A) provides a reference implementation of secure world
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software for `Armv7-A and Armv8-A`_, including a `Secure Monitor`_ executing
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at Exception Level 3 (EL3). It implements various Arm interface standards,
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such as:
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- The `Power State Coordination Interface (PSCI)`_
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- `Trusted Board Boot Requirements CLIENT (TBBR-CLIENT)`_
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- `SMC Calling Convention`_
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- `System Control and Management Interface (SCMI)`_
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- `Software Delegated Exception Interface (SDEI)`_
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- `PSA FW update specification`_
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Where possible, the code is designed for reuse or porting to other Armv7-A and
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Armv8-A model and hardware platforms.
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This release provides a suitable starting point for productization of secure
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world boot and runtime firmware, in either the AArch32 or AArch64 execution
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states.
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Users are encouraged to do their own security validation, including penetration
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testing, on any secure world code derived from TF-A.
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In collaboration with interested parties, we will continue to enhance |TF-A|
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with reference implementations of Arm standards to benefit developers working
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with Armv7-A and Armv8-A TrustZone technology.
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Getting Started
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---------------
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The |TF-A| documentation contains guidance for obtaining and building the
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software for existing, supported platforms, as well as supporting information
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for porting the software to a new platform.
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The **About** chapter gives a high-level overview of |TF-A| features as well as
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some information on the project and how it is organized.
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Refer to the documents in the **Getting Started** chapter for information about
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the prerequisites and requirements for building |TF-A|.
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The **Processes & Policies** chapter explains the project's release schedule
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and process, how security disclosures are handled, and the guidelines for
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contributing to the project (including the coding style).
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The **Components** chapter holds documents that explain specific components
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that make up the |TF-A| software, the :ref:`Exception Handling Framework`, for
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example.
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In the **System Design** chapter you will find documents that explain the
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design of portions of the software that involve more than one component, such
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as the :ref:`Trusted Board Boot` process.
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**Platform Ports** provides a list of the supported hardware and software-model
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platforms that are supported upstream in |TF-A|. Most of these platforms also
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have additional documentation that has been provided by the maintainers of the
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platform.
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The results of any performance evaluations are added to the
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**Performance & Testing** chapter.
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**Security Advisories** holds a list of documents relating to |CVE| entries that
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have previously been raised against the software.
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--------------
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*Copyright (c) 2013-2021, Arm Limited and Contributors. All rights reserved.*
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.. _Armv7-A and Armv8-A: https://developer.arm.com/products/architecture/a-profile
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.. _Secure Monitor: http://www.arm.com/products/processors/technologies/trustzone/tee-smc.php
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.. _Power State Coordination Interface (PSCI): http://infocenter.arm.com/help/topic/com.arm.doc.den0022d/Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf
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.. _Trusted Board Boot Requirements CLIENT (TBBR-CLIENT): https://developer.arm.com/docs/den0006/latest/trusted-board-boot-requirements-client-tbbr-client-armv8-a
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.. _System Control and Management Interface (SCMI): http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
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.. _Software Delegated Exception Interface (SDEI): http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf
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.. _SMC Calling Convention: https://developer.arm.com/docs/den0028/latest
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.. _PSA FW update specification: https://developer.arm.com/documentation/den0118/a/
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