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gerrit.openbmc.org / openbmc / phosphor-power / 1f8b110353c9b4c53d220a5009885063e65f2d88
commit1f8b110353c9b4c53d220a5009885063e65f2d88[log] [tgz]
authorShawn McCarney <shawnmm@us.ibm.com>Fri Jun 21 18:57:46 2024 -0500
committerShawn McCarney <shawnmm@us.ibm.com>Tue Jul 02 11:03:32 2024 -0500
treeeae66fd466dde6653dc6d478a64e7ec2f346018a
parentce1aaddda1d926711e31c4c944a75fbd8719b9e0 [diff]
pseq: Switch to new pgood isolation support

Switch to the new C++ implementation of pgood isolation support.  When a
pgood fault occurs, this support attempts to find the voltage rail that
caused the fault.

The new implementation includes the following:
* PowerSequencerDevice class hierarchy
* Rail class
* Services class
* CompatibleSystemTypesFinder class
* DeviceFinder class
* config_file_parser functions
* New JSON configuration files

Tested:
* Verified all automated tests ran successfully.
* Verified all new/modified code in this commit via manual testing.
* Tested on Rainier and Everest systems
  * Verified system powered on and off without errors.
  * Tested with pgood injection in every rail both during and after the
    power on sequence.  Verified rail was identified and correct error
    was logged.

Change-Id: I83d7fdc45bd0a000a31d98f67ecdd5a54f24b939
Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
3 files changed
tree: eae66fd466dde6653dc6d478a64e7ec2f346018a
  1. cold-redundancy/
  2. example/
  3. org/
  4. phosphor-power-sequencer/
  5. phosphor-power-supply/
  6. phosphor-regulators/
  7. power-sequencer/
  8. power-supply/
  9. services/
  10. subprojects/
  11. test/
  12. tools/
  13. .clang-format
  14. .gitignore
  15. .shellcheck
  16. compatible_system_types_finder.cpp
  17. compatible_system_types_finder.hpp
  18. dbus_interfaces_finder.cpp
  19. dbus_interfaces_finder.hpp
  20. device.hpp
  21. device_monitor.hpp
  22. elog-errors.hpp
  23. file_descriptor.hpp
  24. gpio.cpp
  25. gpio.hpp
  26. LICENSE
  27. meson.build
  28. meson.options
  29. names_values.hpp
  30. OWNERS
  31. pmbus.cpp
  32. pmbus.hpp
  33. README.md
  34. temporary_file.cpp
  35. temporary_file.hpp
  36. temporary_subdirectory.cpp
  37. temporary_subdirectory.hpp
  38. types.hpp
  39. utility.cpp
  40. utility.hpp
README.md

Overview

This repository contains applications for configuring and monitoring devices that deliver power to the system.

  • cold-redundancy: Application that makes power supplies work in Cold Redundancy mode and rotates them at intervals.
  • phosphor-power-sequencer: Applications for configuring and monitoring power sequencer and related devices that support JSON-driven configuration.
  • phosphor-power-supply: Next generation power supply monitoring application.
  • phosphor-regulators: JSON-driven application that configures and monitors voltage regulators.
  • power-sequencer: A power sequencer monitoring application.
  • power-supply: Original power supply monitoring application.
  • tools/power-utils: Power supply utilities.

Build

To build all applications in this repository:

  meson setup build
  ninja -C build

To clean the repository and remove all build output:

  rm -rf build

You can specify meson options to customize the build process. For example, you can specify:

  • Which applications to build and install.
  • Application-specific configuration data, such as power sequencer type.
  • Whether to build tests.

Power Supply Monitor and Util JSON config

Several applications in this repository require a PSU JSON config to run. The JSON config file provides information for:

  • Where to access the pmbus attributes
  • Which attribute file in pmbus maps to which property and interface in D-Bus
  • Which kernel device directory is used on which PSU

There is an example psu.json to describe the necessary configurations.

  • inventoryPMBusAccessType defines the pmbus access type, which tells the service which sysfs type to use to read the attributes. The possible values are:
    • Base: The base dir, e.g. /sys/bus/i2c/devices/3-0069/
    • Hwmon: The hwmon dir, e.g. /sys/bus/i2c/devices/3-0069/hwmon/hwmonX/
    • Debug: The pmbus debug dir, e.g. /sys/kernel/debug/pmbus/hwmonX/
    • DeviceDebug: The device debug dir, e.g. '/sys/kernel/debug/./`
    • HwmonDeviceDebug: The hwmon device debug dir, e.g. /sys/kernel/debug/pmbus/hwmonX/cffps1/
  • fruConfigs defines the mapping between the attribute file and the FRU inventory interface and property. The configuration example below indicates that the service will read part_number attribute file from a directory specified by the above pmbus access type, and assign to PartNumber property in xyz.openbmc_project.Inventory.Decorator.Asset interface.
      "fruConfigs": [
    {
      "propertyName": "PartNumber",
      "fileName": "part_number",
      "interface": "xyz.openbmc_project.Inventory.Decorator.Asset"
    }
  ]
  • psuDevices defines the kernel device dir for each PSU in inventory. The configuration example below indicates that powersupply0's device is located in /sys/bus/i2c/devices/3-0069.
      "psuDevices": {
    "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply0" : "/sys/bus/i2c/devices/3-0069",
  }