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review.trustedfirmware.org / rust-spmc / arm-psci / a2a7e5aab37c68430fcdd930d019336565456e88
commita2a7e5aab37c68430fcdd930d019336565456e88[log] [tgz]
authorImre Kis <imre.kis@arm.com>Wed Mar 19 18:51:14 2025 +0100
committerImre Kis <imre.kis@arm.com>Mon Mar 24 12:41:27 2025 +0100
tree8f70fd41afc48e76a76b2b17aa4240a38153a7e3
parent7c3135c519ef34938f8e68ca54dea968b42c9553 [diff]
Relax Mpidr conversion constraints

* Allow converting Mpidr to u32 if aff3 is set to zero
* Allow converting Mpidr to u64 if aff3 is not set

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: I439cb0c40ea70eeda937ac50157e18284440cce2
1 file changed
tree: 8f70fd41afc48e76a76b2b17aa4240a38153a7e3
  1. src/
  2. .gitignore
  3. Cargo.lock
  4. Cargo.toml
  5. dco.txt
  6. LICENSE-APACHE
  7. LICENSE-MIT
  8. README.md
README.md

Arm Power State Coordination Interface (PSCI) library

This crate aims to offer functions and user-friendly types for parsing and constructing arguments of Arm Power State Coordination Interface (PSCI) calls. This functionality can be beneficial for both firmware and OS components.

However, doing the actual SMC/HVC/ERET calls, or implementing power management logic is beyond the scope of this crate.

Implemented features

  • Handling all PSCI 1.3 mandatory and optional functions
  • Handling both 32-bit and 64-bit call formats
  • Dedicated types for common PSCI call arguments
  • Unit tests

Limitations

  • The implementation does not handle pre-1.0 format suspend power state (see 5.4.2.1 Original format)

License

The project is MIT and Apache-2.0 dual licensed, see LICENSE-APACHE and LICENSE-MIT.

Maintainers

arm-psci is a trustedfirmware.org maintained project. All contributions are ultimately merged by the maintainers listed below.

Contributing

Please follow the directions of the Trusted Firmware Processes.

Contributions are handled through review.trustedfirmware.org.

Reporting Security Issues

Please follow the directions of the Trusted Firmware Security Center.

Copyright 2025 Arm Limited and/or its affiliates open-source-office@arm.com