25ac87940c
This patch introduces a better separation between the trusted-boot related properties, and the dynamic configuration DTBs loading information. The dynamic configuration DTBs properties are moved to a new node: `dtb-registry`. All the sub-nodes present will be provided to the dynamic config framework to be loaded. The node currently only contains the already defined configuration DTBs, but can be extended for future features if necessary. The dynamic config framework is modified to use the abstraction provided by the fconf framework, instead of directly accessing the DTBs. The trusted-boot properties are kept under the "arm,tb_fw" compatible string, but in a separate `tb_fw-config` node. The `tb_fw-config` property of the `dtb-registry` node simply points to the load address of `fw_config`, as the `tb_fw-config` is currently part of the same DTB. Change-Id: Iceb6c4c2cb92b692b6e28dbdc9fb060f1c46de82 Signed-off-by: Louis Mayencourt <louis.mayencourt@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.