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gerrit.openbmc.org / openbmc / openpower-vpd-parser / b2c2ccc2449704363042ba188abdffc404d6a78e
commitb2c2ccc2449704363042ba188abdffc404d6a78e[log] [tgz]
authorSantosh Puranik <santosh.puranik@in.ibm.com>Sat May 14 05:15:44 2022 -0500
committerSantosh Puranik <santosh.puranik@in.ibm.com>Mon Oct 17 06:16:32 2022 +0000
treee27200dabbf472b55c5a42cb1dd83a2be79fb068
parent253fbe9ff3889b5da9be83076b663f08d82fece9 [diff]
manager: Add some attributes to BIOS restore

This commit adds support to synchronize the pvm_keep_and_clear
and pvm_create_default_lpar BIOS attributes to the UTIL/D1
keyword in the motherboard VPD.

The use-case for doing this is the same as the other attributes we
already handle - that to restore them post a factory reset.

pvm_keep_and_clear - Backed up to UTIL/D1, bit 0
pvm_create_default_lpar - Backed up to UTIL/D1, bit 1

Signed-off-by: Santosh Puranik <santosh.puranik@in.ibm.com>
Change-Id: I8a2c08a06a17d15ed9a607a482a2c8a88173fddd
Signed-off-by: Santosh Puranik <santosh.puranik@in.ibm.com>
2 files changed
tree: e27200dabbf472b55c5a42cb1dd83a2be79fb068
  1. examples/
  2. subprojects/
  3. test/
  4. vpd-manager/
  5. vpd-parser/
  6. vpdecc/
  7. .clang-format
  8. .gitignore
  9. app.cpp
  10. args.cpp
  11. args.hpp
  12. common_utility.cpp
  13. common_utility.hpp
  14. const.hpp
  15. defines.hpp
  16. extra-properties-example.yaml
  17. extra-properties.mako.hpp
  18. extra-properties.py
  19. ibm_vpd_app.cpp
  20. ibm_vpd_utils.cpp
  21. ibm_vpd_utils.hpp
  22. impl.cpp
  23. impl.hpp
  24. LICENSE
  25. meson.build
  26. meson_options.txt
  27. OWNERS
  28. README.md
  29. store.hpp
  30. types.hpp
  31. utilInterface.hpp
  32. vpd_exceptions.hpp
  33. vpd_tool.cpp
  34. vpd_tool_impl.cpp
  35. vpd_tool_impl.hpp
  36. write.cpp
  37. write.hpp
  38. writefru.mako.hpp
  39. writefru.py
  40. writefru.yaml
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.