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gerrit.openbmc.org / openbmc / openpower-occ-control / 764d3599a7f72177cc1e63f2685d3e1a21fcf005
commit764d3599a7f72177cc1e63f2685d3e1a21fcf005[log] [tgz]
authorPatrick Williams <patrick@stwcx.xyz>Wed Nov 05 00:11:16 2025 -0500
committerPatrick Williams <patrick@stwcx.xyz>Wed Nov 05 00:11:16 2025 -0500
tree9ad8f4d73bbc774aa289d3c6456aa7c7e51a5469
parentcbeaa78bbd543fea96d050a3ba3f4ca1e29efd68 [diff]
use sdbusplus unpack syntax

Rather than defining a variable and then reading it from a message,
sdbusplus also supports directly unpack-ing from the message.  Use
this syntax instead as it is more efficient and succinct.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Id36cca2ca362f505ed9f70d30f6665a8c1a62722
3 files changed
tree: 9ad8f4d73bbc774aa289d3c6456aa7c7e51a5469
  1. example/
  2. service_files/
  3. subprojects/
  4. test/
  5. .clang-format
  6. .gitignore
  7. app.cpp
  8. file.hpp
  9. LICENSE
  10. meson.build
  11. meson.options
  12. occ-active.sh
  13. occ_command.cpp
  14. occ_command.hpp
  15. occ_dbus.cpp
  16. occ_dbus.hpp
  17. occ_device.cpp
  18. occ_device.hpp
  19. occ_errors.cpp
  20. occ_errors.hpp
  21. occ_events.hpp
  22. occ_ffdc.cpp
  23. occ_ffdc.hpp
  24. occ_manager.cpp
  25. occ_manager.hpp
  26. occ_pass_through.cpp
  27. occ_pass_through.hpp
  28. occ_presence.cpp
  29. occ_presence.hpp
  30. occ_sensor.mako.hpp
  31. occ_status.cpp
  32. occ_status.hpp
  33. OWNERS
  34. pldm.cpp
  35. pldm.hpp
  36. powercap.cpp
  37. powercap.hpp
  38. powermode.cpp
  39. powermode.hpp
  40. README.md
  41. sensor_gen.py
  42. utils.cpp
  43. utils.hpp
README.md

OpenPOWER OCC Control Service

This service will handle communications to the On-Chip Controller (OCC) on Power processors. The OCC provides processor and memory temperatures, power readings, power cap support, system power mode support, and idle power saver support. OCC Control will be interfacing with the OCC to collect the temperatures and power readings, updating the system power mode, setting power caps, and idle power save parameters.

The service is started automatically when the BMC is started.

Build Project

This project can be built with meson. The typical meson workflow is: meson builddir && ninja -C builddir.

Server

The server will start automatically after BMC is powered on.

Server status: systemctl status org.open_power.OCC.Control.service

To restart the service: systemctl restart org.open_power.OCC.Control.service

Configuration

Service files are located in service_files subdirectory.

References

Power10

IBM EnergyScale for Power10 Processor-Based Systems whitepaper: https://www.ibm.com/downloads/cas/E7RL9N4E

OCC Firmware Interface Spec for Power10: https://github.com/open-power/docs/blob/P10/occ/OCC_P10_FW_Interfaces_v1_17.pdf

OCC Firmware: https://github.com/open-power/occ/tree/master-p10

Power9

IBM EnergyScale for POWER9 Processor-Based Systems: https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?htmlfid=49019149USEN&

OCC Firmware Interface Spec for POWER9: https://github.com/open-power/docs/blob/P9/occ/OCC_P9_FW_Interfaces.pdf