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gerrit.openbmc.org / openbmc / openpower-occ-control / 358d3966d3381c7e404a546dbf0e9a33473ef398
commit358d3966d3381c7e404a546dbf0e9a33473ef398[log] [tgz]
authorChris Cain <cjcain@us.ibm.com>Fri Aug 23 15:29:38 2024 -0500
committerChris Cain <cjcain@us.ibm.com>Mon Aug 26 09:28:34 2024 -0500
tree4b8858ca6f99a909dc80e8726268789f068509d3
parentd7542c83b1acd145e0bbf2c1b6307911dfcebf7a [diff]
Fix OCC response checksum calculation

The OCC checksum calculation should be ignoring overflow.

Removed redundant trace of the occActive state:
'''
Aug 23 18:38:52 rain100bmc openpower-occ-control[6515]: updateOCCActive: OCC0 active=true
Aug 23 18:38:52 rain100bmc openpower-occ-control[6515]: Status::occActive OCC0 changed to true
'''

Added trace of first 4 bytes of data for pass-through commands:
'''
Aug 23 19:19:30 rain100bmc openpower-occ-control[27848]: PassThrough::send() Sending 0x00 command to OCC0 (data len=1, data=0x20)
Aug 23 19:19:40 rain100bmc openpower-occ-control[27848]: PassThrough::send() Sending 0x40 command to OCC0 (data len=5, data=0x07001000...)
'''

Change-Id: I632b0e0af214858e15f3d5c196723dc6ffe12445
Signed-off-by: Chris Cain <cjcain@us.ibm.com>
3 files changed
tree: 4b8858ca6f99a909dc80e8726268789f068509d3
  1. example/
  2. service_files/
  3. subprojects/
  4. test/
  5. .clang-format
  6. .gitignore
  7. app.cpp
  8. file.hpp
  9. i2c_occ.cpp
  10. i2c_occ.hpp
  11. LICENSE
  12. meson.build
  13. meson.options
  14. occ-active.sh
  15. occ_command.cpp
  16. occ_command.hpp
  17. occ_dbus.cpp
  18. occ_dbus.hpp
  19. occ_device.cpp
  20. occ_device.hpp
  21. occ_errors.cpp
  22. occ_errors.hpp
  23. occ_events.hpp
  24. occ_ffdc.cpp
  25. occ_ffdc.hpp
  26. occ_manager.cpp
  27. occ_manager.hpp
  28. occ_pass_through.cpp
  29. occ_pass_through.hpp
  30. occ_presence.cpp
  31. occ_presence.hpp
  32. occ_sensor.mako.hpp
  33. occ_status.cpp
  34. occ_status.hpp
  35. OWNERS
  36. pldm.cpp
  37. pldm.hpp
  38. powercap.cpp
  39. powercap.hpp
  40. powermode.cpp
  41. powermode.hpp
  42. README.md
  43. sensor_gen.py
  44. utils.cpp
  45. 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