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gerrit.openbmc.org / openbmc / openpower-libhei / 6223ab56b43401eb0fe9201680edc3302294ba9a
commit6223ab56b43401eb0fe9201680edc3302294ba9a[log] [tgz]
authorBen Tyner <ben.tyner@ibm.com>Tue Mar 02 13:24:57 2021 -0600
committerBen Tyner <ben.tyner@ibm.com>Tue Mar 02 13:24:57 2021 -0600
treee860901d99a9989df57a61f3835e5d782e035346
parentfc4aa5ecebfbc8d6fab8b0d88d3d9c1bbbcde8ab [diff]
Fix compiler warning on signed-unsigned compare

Compiler was generating a warning for test case that was comparing a
constant integer to a size. Cast the constant integer as size_t.

Signed-off-by: Ben Tyner <ben.tyner@ibm.com>
Change-Id: I7c1c5c852a3cdf0f2f1c6908cc3647c90fa635c3
1 file changed
tree: e860901d99a9989df57a61f3835e5d782e035346
  1. src/
  2. test/
  3. xml/
  4. .clang-format
  5. .gitignore
  6. LICENSE
  7. MAINTAINERS
  8. meson.build
  9. meson_options.txt
  10. 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