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review.trustedfirmware.org / hafnium / hafnium.git / 5e425040abf468e0e82615f7185cd9ab5f755ace
commit5e425040abf468e0e82615f7185cd9ab5f755ace[log] [tgz]
authorDaniel Boulby <daniel.boulby@arm.com>Thu Feb 22 14:18:43 2024 +0000
committerJoao Alves <joao.alves@arm.com>Tue Mar 05 16:38:02 2024 +0100
treef12f05a47708510966cacb41a44dbd4d07cfa48c
parenta76fd9165b4b03e93d22ce5879f816b8c44b68ea [diff]
test(memory share): multiple borrowers from v1.1 SP

An issue was found when a v1.1 SP would share memory to
mutiple borrowers. This patch introduces a test to catch this
case. The issue was fixed in the previous patch.

In addition this patch expands the exisiting current version
to v1.1 test to share to multiple borrowers.

Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
Change-Id: Idc60c33aa86703fd7735861a0c139c272e7867cb
4 files changed
tree: f12f05a47708510966cacb41a44dbd4d07cfa48c
  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.