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review.trustedfirmware.org / hafnium / hafnium.git / 66a38bd5184d941f5319a5e38d389986f64a4f7c
commit66a38bd5184d941f5319a5e38d389986f64a4f7c[log] [tgz]
authorKarl Meakin <karl.meakin@arm.com>Tue May 28 16:00:56 2024 +0100
committerKarl Meakin <karl.meakin@arm.com>Thu Jul 25 14:49:00 2024 +0100
treeec455201b70e42b00a490c8b251f445af35c9a77
parenta5ea909bfc615d84e6ae9e4791014d81d39b71e8 [diff]
fix: fix build with clang-18

Some uses of inline assembly for accessing floating point registers did
not enable the FP extension and were failing with clang-18.

The check in the linker script for the `hftest_enable` variable fails
under clang-18. However, hftest still compiles and passes without the
check, so it was removed.

Fix new warnings from `clang-tidy`.

Apply `make format`.

Change-Id: I43996abb4c42de54be807dcdb76107b9752c62fb
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
18 files changed
tree: ec455201b70e42b00a490c8b251f445af35c9a77
  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.