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gerrit.openbmc.org / openbmc / openpower-libhei / e4ad4e3c08992c7d697ef0b8416c3656a81c4c79
commite4ad4e3c08992c7d697ef0b8416c3656a81c4c79[log] [tgz]
authorCaleb Palmer <cnpalmer@us.ibm.com>Wed Aug 07 09:48:14 2024 -0500
committerCaleb Palmer <cnpalmer@us.ibm.com>Tue Aug 13 13:14:53 2024 -0500
treea3f74c81dd57d8917c9c8744498fda4765f92cdd
parenta27b584cb2153070872b2a9c3f16020a4cd348f3 [diff]
Add support in the isolator to perform write operations on a signature

Signed-off-by: Caleb Palmer <cnpalmer@us.ibm.com>
Change-Id: Ia1f189a8ce7d1d71efc0ae81942151c31d63a4f5
10 files changed
tree: a3f74c81dd57d8917c9c8744498fda4765f92cdd
  1. chip_data/
  2. src/
  3. subprojects/
  4. test/
  5. .clang-format
  6. .eslintignore
  7. .gitignore
  8. .prettierignore
  9. .prettierrc.yaml
  10. buildinfo.hpp.in
  11. LICENSE
  12. meson.build
  13. meson_options.txt
  14. OWNERS
  15. README.md
README.md

openpower-libhei: Hardware Error Isolation for POWER Systems

This library is a common, portable code base for isolating errors reported by hardware registers on POWER Systems chips.

The primary consumers (and requirements drivers) will be:

Core API

See the primary API definitions for details on how to use this library.

Integration

This library can be integrated into a user application's source (either imported, or as a git subtree/submodule) or built as static library.

User Application Requirements and APIs

  • The process to access hardware register data will vary per user application. Therefore, this library will declare the hardware access user APIs, but each user application must implement the APIs for their own environment.
  • This library will not contain data regarding hardware specific information. Instead, that information will be provided by the user application in the form of the Chip Data Files.
  • Tracing, or logging, methods will vary per user application. Therefore, this library will declare the tracing/logging user APIs, but each user application must implement the APIs for their own environment.

Environment configuration

  • __HEI_ENABLE_HW_WRITE: When defined, it will allow hardware write support. Note that the Chip Data Files will contain rules for clearing and masking register bits. Both of which will require modifying hardware registers, which is not allowed by user applications like OpenBMC or FSP firmware.

Development Notes

  • The Hostboot environment only supports up to C++14. Therefore, this library cannot use anything newer at this time.
  • Hostboot has a very limited environment. It does not include libc or libstdc++. However, Hostboot has implemented select functions from those libraries as needed. For details, you can reference src/include/ in the POWER Systems Hostboot firmware.

Building

For a standard OpenBMC release build, you want something like:

meson -Dtests=disabled <build_dir>
ninja -C <build_dir>
ninja -C <build_dir> install

For a test / debug build, a typical configuration is:

meson -Dtests=enabled <build_dir>
ninja -C <build_dir> test