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TF-A aims to comply with MISRA C:2012 Guidelines. We maintain a list of all rules and directives and whether the project aims to comply with them or not. A rationale is given for each deviation. This list used to be provided as an '.ods' spreadsheet file hosted on developer.trustedfirmware.org. This raises the following issues: - The list is not version-controlled under the same scheme as TF-A source code. This could lead to synchronization issues between the two. - The file needs to be open in a separate program, which is not as straightforward as reading it from TF-A documentation itself. - developer.trustedfirmware.org is deprecated, thus the file cannot be safely kept there for any longer. To address these issues, convert the '.ods' file into a CSV (Comma Separated Values) file, which we import into TF-A source tree itself. Make use of Sphinx's ability to process and render CSV files as tables to display that information directly into the Coding Guidelines document. Also make the following minor changes along the way: - Remove dead link to MISRA C:2012 Guidelines page. Replace it with a link to a Wikipedia page to give a bit of context to the reader. - We no longer use Coverity for MISRA compliance checks. Instead, we use ECLAIR nowadays. Reflect this in the document. Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com> Change-Id: I422fdd8246f4f9c2498c1be18115408a873b86ac |
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Trusted Firmware-A ================== Trusted Firmware-A (TF-A) is a reference implementation of secure world software for `Arm A-Profile architectures`_ (Armv8-A and Armv7-A), including an Exception Level 3 (EL3) `Secure Monitor`_. It provides a suitable starting point for productization of secure world boot and runtime firmware, in either the AArch32 or AArch64 execution states. TF-A implements Arm interface standards, including: - `Power State Coordination Interface (PSCI)`_ - `Trusted Board Boot Requirements CLIENT (TBBR-CLIENT)`_ - `SMC Calling Convention`_ - `System Control and Management Interface (SCMI)`_ - `Software Delegated Exception Interface (SDEI)`_ The code is designed to be portable and reusable across hardware platforms and software models that are based on the Armv8-A and Armv7-A architectures. In collaboration with interested parties, we will continue to enhance TF-A with reference implementations of Arm standards to benefit developers working with Armv7-A and Armv8-A TrustZone technology. Users are encouraged to do their own security validation, including penetration testing, on any secure world code derived from TF-A. More Info and Documentation --------------------------- To find out more about Trusted Firmware-A, please `view the full documentation`_ that is available through `trustedfirmware.org`_. -------------- *Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.* .. _Armv7-A and Armv8-A: https://developer.arm.com/products/architecture/a-profile .. _Secure Monitor: http://www.arm.com/products/processors/technologies/trustzone/tee-smc.php .. _Power State Coordination Interface (PSCI): PSCI_ .. _PSCI: http://infocenter.arm.com/help/topic/com.arm.doc.den0022d/Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf .. _Trusted Board Boot Requirements CLIENT (TBBR-CLIENT): https://developer.arm.com/docs/den0006/latest/trusted-board-boot-requirements-client-tbbr-client-armv8-a .. _SMC Calling Convention: http://infocenter.arm.com/help/topic/com.arm.doc.den0028b/ARM_DEN0028B_SMC_Calling_Convention.pdf .. _System Control and Management Interface (SCMI): SCMI_ .. _SCMI: http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf .. _Software Delegated Exception Interface (SDEI): SDEI_ .. _SDEI: http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf .. _Arm A-Profile architectures: https://developer.arm.com/architectures/cpu-architecture/a-profile .. _view the full documentation: https://www.trustedfirmware.org/docs/tf-a .. _trustedfirmware.org: http://www.trustedfirmware.org