TrustedFirmware Git Browser
Code Review Sign In
review.trustedfirmware.org / hafnium / hafnium.git / 486ffdce7223f836ce7ee86f484b267a15dd1cdb
commit486ffdce7223f836ce7ee86f484b267a15dd1cdb[log] [tgz]
authorKathleen Capella <kathleen.capella@arm.com>Tue Aug 20 12:50:23 2024 -0400
committerKathleen Capella <kathleen.capella@arm.com>Mon Sep 16 11:56:56 2024 -0400
tree3f98e297c6f73f6a94d94e572325180aec63bb2f
parent337dbdfa04ee96084d3826f0157d4ae1e53ee8bb [diff]
test(ff-a): FFA_MSG_WAIT multicore RX buffer test

Add a test case in which multiple SP vcpus potentially interact with the
SP's RX buffer.

The test follows the following steps:
 * Send an indirect message to the SP with a constant value.
 * Use the FFA_MSG_WAIT ABI with the retain RX buffer flag in one SP
   vcpu. RX buffer should be retained by the SP.
 * The other vcpu attempts to read the RX buffer after the FFA_MSG_WAIT
   call. It should succeed and see the same constant value that was
   sent.

Signed-off-by: Kathleen Capella <kathleen.capella@arm.com>
Change-Id: Ieb49ec9062c9e6e0bff85be55e27300ef6f7aed8
2 files changed
tree: 3f98e297c6f73f6a94d94e572325180aec63bb2f
  1. .vscode/
  2. build/
  3. docs/
  4. driver/
  5. inc/
  6. kokoro/
  7. project/
  8. src/
  9. test/
  10. third_party/
  11. vmlib/
  12. prebuilts
  13. .clang-format
  14. .clang-tidy
  15. .gitignore
  16. .gitmodules
  17. .gn
  18. .readthedocs.yaml
  19. AUTHORS
  20. BUILD.gn
  21. CONTRIBUTING.md
  22. dco.txt
  23. LICENSE
  24. Makefile
  25. navbar.md
  26. pyproject.toml
  27. README.md
README.md

Hafnium

Hafnium is the Secure Partition Manager(SPM) reference implementation, following the Arm's Firmware Framework specification.

It leverages Arm's virtualization extensions in the secure world of Arm's A class of devices (feature introduced with Armv8.4 FEAT_SEL2) to allow multiple Trusted OSes or Applications to run concurrently, inside the Trusted Execution Environment, each running as a Secure Partition (SP). Its main goal is to control the system access given to Trusted OSes, and serve as a mediator to the rest of the system.

For example, it limits the memory use, and handles all system calls from Trusted OS. Thus the SPM can enforce spacial isolation, and enforce some level of access control, protecting other critical system resources such as: the secure monitor, the normal world software stack, the SPM itself and other SPs/Trusted Applications. Other important features are: secure interrupt handling, device assignment, inter-partition communication and with the Normal World Software stack, also known as Rich Execution Environment (REE).

The following diagram shows an overview of a typical aarch64-based system, and where Hafnium fits:

Hafnium Architecture

Get in touch and keep up-to-date at:

See feature requests and bugs through github.

Documentation

To find more about Hafnium, view the full documentation. It includes valuable resources such as: Getting Started guide, Threat Model, and other documentation.