1d7a7df893584ff90725a83474181d8fcb351465 - openbmc/phosphor-power - Gitiles

commit	1d7a7df893584ff90725a83474181d8fcb351465	[log] [tgz]
author	Brandon Wyman <bjwyman@gmail.com>	Thu Mar 26 10:14:05 2020 -0500
committer	Brandon Wyman <bjwyman@gmail.com>	Tue Jun 30 20:04:01 2020 -0500
tree	abfca7cd20bb2485964a72fcd02556eb0c71c573
parent	da36455b32ad183bfab64a948310fc2f7cae07ab [diff]

psu-ng: Updates to get VPD data to inventory

Add in code to retrieve the VPD data and populate that data to the D-Bus
inventory properties.

Use the PMBus utilities to retrieve the model (CCIN for IBM power
supplies), part number, serial number, and firmware version information
from the sysfs "files" provided via the device driver.

Only build in IBM VPD data collection and reporting if meson ran with
-Dibm-vpd=true.

Tested:
    Copied SDK build of phospor-psu-monitor with -Dibm-vpd=true to
    Rainier hardware system, verified inventory properties updated/added.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: I61688b154ead570e9d9390342596bf7d840f4dce

10 files changed

tree: abfca7cd20bb2485964a72fcd02556eb0c71c573

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-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 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",
  }
```