15dd6f19da
Add the support to save Nwd's floating point registers before switching to SEL0 and then restore it after coming out of it. Emit a warning message if SPM_MM is built with CTX_INCLUDE_FPREGS == 0 There is no need to save FP registers of SEL0 because secure partitions run to completion. This change is used to prevent context corruption if secure partition enabled and Nwd decide to use floating point registers. Signed-off-by: Nishant Sharma <nishant.sharma@arm.com> Change-Id: I1eea16ea2311a4f00a806ea72c118752821b9abb |
||
|---|---|---|
| .husky | ||
| bl1 | ||
| bl2 | ||
| bl2u | ||
| bl31 | ||
| bl32 | ||
| common | ||
| docs | ||
| drivers | ||
| fdts | ||
| include | ||
| lib | ||
| licenses | ||
| make_helpers | ||
| plat | ||
| services | ||
| tools | ||
| .checkpatch.conf | ||
| .commitlintrc.js | ||
| .cz.json | ||
| .editorconfig | ||
| .gitignore | ||
| .gitreview | ||
| .versionrc.js | ||
| Makefile | ||
| changelog.yaml | ||
| dco.txt | ||
| license.rst | ||
| package-lock.json | ||
| package.json | ||
| readme.rst | ||
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.