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gerrit.openbmc.org / openbmc / openpower-libhei / dd69c96b56f16f3f752b3e094230a2aac396e3ba
commitdd69c96b56f16f3f752b3e094230a2aac396e3ba[log] [tgz]
authorZane Shelley <zshelle@us.ibm.com>Tue May 05 22:19:11 2020 -0500
committerZane Shelley <zshelle@us.ibm.com>Fri May 08 21:47:16 2020 -0500
treede752947601612010e7aeb9115e12fe06bedf326
parent01e590b752118f09db9f89f6aa37ab6b4b22cb84 [diff]
Initial support to parse a Chip Data File

Change-Id: Ib5a7d8344922f8288c23f5bedd304e282dcfaada
Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
8 files changed
tree: de752947601612010e7aeb9115e12fe06bedf326
  1. src/
  2. test/
  3. .clang-format
  4. .gitignore
  5. LICENSE
  6. MAINTAINERS
  7. meson.build
  8. meson_options.txt
  9. 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_READ_ONLY: When defined, it will ensure any hardware write support is disabled. 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 setup -Dtests=disabled <build_dir>
ninja -C <build_dir>
ninja -C <build_dir> install

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

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