ChromiumOS Platform

Supported Probe Functions

Runtime Probe supports probing components and their attributes with probe functions.

The implementation of probe functions can be found in function_templates/ and functions/. Available attributes and their definition for each component could be found in runtime_probe.proto.

Note that the probe function set is different from factory probe functions.

If OEMs/ODMs have any trouble on this, please contact us.

AP I2C

ap_i2c

Read data from a register on an AP I2C component.

Arguments:

  • i2c_bus (int): The bus of the I2C connected to AP.
  • chip_addr (int): The I2C address.
  • data_addr (int): The register offset.

Result attributes:

  • data (uint32): The value in the register.

Audio Codec

audio_codec

TBD

Battery

generic_battery

Probe battery components.

TBD

Camera

generic_camera

Probe generic camera components.

TBD

mipi_camera

Probe MIPI camera components.

TBD

usb_camera

Probe USB camera components.

TBD

CPU

cpu

Probe CPU components.

TBD

EC I2C

ec_i2c

Read data from a register on an EC I2C component.

Arguments:

  • i2c_bus (int): The bus of the I2C connected to EC.
  • chip_addr (int): The I2C address.
  • data_addr (int): The register offset.
  • size (int, optional): The data size in bits. Default: 8.

Result attributes:

  • data (uint32): The value in the register.

EDID

edid

Probe display panel components with their EDID (Extended Display Identification Data).

TBD

Input Device

input_device

Probe input devices such as stylus, touchpad, and touchscreen.

Arguments:

  • device_type (string, optional): Input device type: stylus, touchpad, touchscreen.

Result attributes:

  • name (string): Device name.
  • path (string): Pathname of the sysfs entry of the device.
  • event (string): Event of the device.
  • bus (uint32): Bus number. 16 bits.
  • vendor (uint32): Vendor ID. 16 bits.
  • product (uint32): Product ID. 16 bits.
  • version (uint32): Version number. 16 bits.
  • fw_version (string): Firmware version.
  • device_type (enum InputDevice_Type): Device type: stylus, touchpad, touchscreen, unknown.

Memory

dram

Probe DRAM memories. Only support AMD64 platforms.

TBD

Network

generic_network

Probe generic network components.

TBD

cellular_network

Probe cellular network components.

TBD

ethernet_network

Probe non-removable ethernet cellular components.

TBD

wireless_network

Probe wireless cellular components.

TBD

Storage

generic_storage

Probe non-removable generic storage components.

TBD

ata_storage

Probe non-removable ATA storage components.

TBD

mmc_storage

Probe non-removable eMMC storage components.

TBD

nvme_storage

Probe non-removable NVMe storage components.

TBD

ufs_storage

Probe non-removable UFS storage components.

TBD

TCPC

tcpc

Probe TCPC components.

Result attributes:

  • port (uint32): The USB-C port number. 8 bits.
  • vendor_id (uint32): Vendor ID. 16 bits.
  • product_id (uint32): Product ID. 16 bits.
  • device_id (uint32): Device ID. 16 bits.

TPM

tpm

Probe TPM components.

TBD