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gerrit.openbmc.org / openbmc / openpower-libhei / 6eb619035ae8a57d8e532b23d8bc1966eb032f7d
commit6eb619035ae8a57d8e532b23d8bc1966eb032f7d[log] [tgz]
authorZane Shelley <zshelle@us.ibm.com>Fri May 15 22:25:58 2020 -0500
committerZane Shelley <zshelle@us.ibm.com>Sat May 16 10:18:23 2020 -0500
tree241898253f82fc72c7a666c409ab6508e991e71e
parentd0659241dc96f934486d108c73aa43565d905e9a [diff]
Add capture regs from Chip Data File to IsolationNode

Change-Id: Ia91821f2b14e12ed917c97b622789710ffb8bdb4
Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
8 files changed
tree: 241898253f82fc72c7a666c409ab6508e991e71e
  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_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 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>