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gerrit.openbmc.org / openbmc / openpower-vpd-parser / 0f370434621997eea8ac37d69834e9ada810068d
commit0f370434621997eea8ac37d69834e9ada810068d[log] [tgz]
authorSouvik Roy <souvikroyofficial10@gmail.com>Tue Apr 08 01:55:58 2025 -0500
committerJinu Joy Thomas <jinu.joy.thomas@in.ibm.com>Wed Apr 09 07:12:52 2025 +0000
treef23e2c492f3859dc965fb5e7af6b69d5eb706cf7
parente8dfecd57258c51cda7ccd5e6dbbc594c877b8c1 [diff]
Change bad VPD dump directory

This commit changes the bad VPD dump directory from /tmp/bad-vpd to
/var/lib/vpd/dumps. This change is done to ensure bad VPD dumps persist
across BMC reboots. The parent directory /var/lib/vpd is created by
vpd-manager during genesis boot/factory reset.

This commit also updates references to the bad VPD dump directory in the
utility API used to dump bad VPD.

Change-Id: Ibdb53e38c1afd15d4324f7bc04dec4d35e70d46a
Signed-off-by: Souvik Roy <souvikroyofficial10@gmail.com>
4 files changed
tree: f23e2c492f3859dc965fb5e7af6b69d5eb706cf7
  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
  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.