316c5cc6a2
The TBBR documentation has been written along with an early implementation of the code. At that time, the range of supported encryption and hash algorithms was failry limited. Since then, support for other algorithms has been added in TF-A but the documentation has not been updated. Instead of listing them all, which would clutter this document while still leaving it at risk of going stale in the future, remove specific references to the original algorithms and point the reader at the relevant comprehensive document for further details. Change-Id: I29dc50bc1d53b728091a1fbaa1c3970fb999f7d5 Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com> |
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readme.rst
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.