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gerrit.openbmc.org / openbmc / openpower-vpd-parser / 043955d2f6725a239a76285574f9493535e177d9
commit043955d2f6725a239a76285574f9493535e177d9[log] [tgz]
authorSunny Srivastava <sunnsr25@in.ibm.com>Tue Jan 21 18:04:49 2025 +0530
committerSunny Srivastava <sunnsr25@in.ibm.com>Mon Mar 17 14:32:51 2025 +0530
tree3dc29cf8623efea8d1be9ee52f3b8a405cdf37d2
parentd34c10cc9d2c068cfc2d1c6444e622ce02e7c761 [diff]
Handling of PELs while collecting system VPD

The commit updates handling of PEL in the path of system VPD collection.
Any error in the flow needs to be handled at worker end and should not
be propagated to Manager preventing service from failing.

Change-Id: Ia06e5a4debe2fd3f8541d7975509449e86b23fcc
Signed-off-by: Sunny Srivastava <sunnsr25@in.ibm.com>
2 files changed
tree: 3dc29cf8623efea8d1be9ee52f3b8a405cdf37d2
  1. configuration/
  2. scripts/
  3. service_files/
  4. test/
  5. vpd-manager/
  6. vpd-tool/
  7. vpdecc/
  8. .clang-format
  9. .gitignore
  10. LICENSE
  11. meson.build
  12. meson_options.txt
  13. OWNERS
  14. README.md
README.md

Overview

This repository hosts code for OpenPower and IBM IPZ format VPD parsers. Both OpenPower VPD and IPZ VPD formats are structured binaries that consist of records and keywords. A record is a collection of multiple keywords. More information about the format can be found here.

The repository consists of two distinct applications, which are:

OpenPower VPD Parser

This is a build-time YAML driven application that parses the OpenPower VPD format and uses the YAML configuration (see extra-properties-example.yaml and writefru.yaml) to determine:

  • The supported records and keywords.
  • How VPD data is translated into D-Bus interfaces and properties.

The application instance must be passed in the file path to the VPD (this can, for example, be a sysfs path exposed by the EEPROM device driver) and also the D-Bus object path(s) that EEPROM data needs to be published under.

IBM VPD Parser

This parser is can be built by passing in the --enable-ibm-parser configure option. This parser differs from the OpenPower VPD parser in the following ways:

  • It parses all the records and keywords from the VPD, including large keywords (Keywords that begin with a # and are > 255 bytes in length).
  • It relies on a runtime JSON configuration (see examples/inventory.json) to determine the D-Bus object path(s) that hold interfaces and properties representing the VPD for a given VPD file path.

Making the application runtime JSON driven allows us to support multiple systems (with different FRU configurations) to be supported in a single code image as well as making the application more flexible for future improvements.

TODOs and Future Improvements

  1. The long-term goal is to completely do away with the build time YAML driven configurations and instead reconcile the OpenPower VPD parser and the IBM VPD parser applications into a single runtime JSON driven application.
  2. Add details to the README on how to configure and build the application.
  3. More JSON documentation.
  4. Support for more IBM VPD formats.
  5. VPD Write and tool documentation.