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review.trustedfirmware.org / arm-firmware-crates / arm-generic-timer / db5d9567fb842d77e3fcdd4ea3d8310730e8a7ef
commitdb5d9567fb842d77e3fcdd4ea3d8310730e8a7ef[log] [tgz]
authorImre Kis <imre.kis@arm.com>Fri Aug 01 16:36:01 2025 +0200
committerImre Kis <imre.kis@arm.com>Tue Aug 12 16:07:44 2025 +0200
treec35fbbec61a18db79b237e69cc9e6530f1cf2145
parent2dd2a4966e8f72c77bd0fe25363d7082a4f8df1d [diff]
Initial implementation of the Arm generic timer driver

The implementation provides register descriptions and drivers for the
CNTControlBase, CNTCTLBase, CNTReadBase, CNTBaseN, CNTEL0BaseN frames.
It also implements blocking and interrupt based timer wait functions.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: Ie0f06bfc1e35d38c3e4929fe2288dc510b8cd8ee
8 files changed
tree: c35fbbec61a18db79b237e69cc9e6530f1cf2145
  1. src/
  2. .gitignore
  3. Cargo.lock
  4. Cargo.toml
  5. dco.txt
  6. LICENSE-Apache-2.0
  7. LICENSE-MIT
  8. README.md
README.md

Arm Generic Timer driver

Driver implementation for the memory mapped Generic Timer peripheral of the Arm A-profile architecture. The implementation is based on the following sections of the Arm Architecture Reference Manual for A-profile architecture.

  • I2.2.3 Counter module control and status register summary
  • I2.3 Memory-mapped timer components
  • I5.6 Generic Timer memory-mapped registers overview
  • I5.7 Generic Timer memory-mapped register descriptions

Implemented features

  • Register descriptions and drivers for the following frames:
    • CNTControlBase
    • CNTCTLBase
    • CNTReadBase
    • CNTBaseN
    • CNTEL0BaseN
  • Blocking and interrupt based timer wait functions.

License

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

Maintainers

arm-generic-timer 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.

Arm trademark notice

Arm is a registered trademark of Arm Limited (or its subsidiaries or affiliates).

This project uses some of the Arm product, service or technology trademarks, as listed in the Trademark List, in accordance with the Arm Trademark Use Guidelines.

Subsequent uses of these trademarks throughout this repository do not need to be prefixed with the Arm word trademark.

Copyright The arm-generic-timer Contributors.