PLDM

OpenPRoT devices support the Platform Level Data Model (PLDM) as a responder for firmware updates and platform monitoring. This entails responding to messages of Type 0 (Base), Type 2 (Platform Monitoring and Control), and Type 5 (Firmware Update).

PLDM Base Specifications

Type 0 - Base Specification

• Purpose: Base Specification and Initialization
• Version: 1.2.0
• Specification: PLDM Base Specification

All responders must implement the following mandatory PLDM commands:

• GetTID
• GetPLDMVersion
• GetPLDMTypes
• GetPLDMCommands

All responders must also implement the following optional command:

• SetTID

Type 2 - Platform Monitoring and Control

• Purpose: Platform Monitoring and Control
• Version: 1.3.0
• Specification: PLDM for Platform Monitoring and Control

OpenPRoT supports PLDM Monitoring and Control by providing a Platform Descriptor Record (PDR) repository to a prospective PLDM manageability access point discovery agent. These PDRs are defined in JSON files and included in OpenPRoT at build time, with no support for dynamic adjustments. The PDRs are limited to security features and will only support PLDM sensors, not effectors.

PLDM Monitoring PDRs

• Terminus Locator PDR
• Numeric Sensor PDR

Type 5 - Firmware Update

• Purpose: Firmware Update
• Version: 1.3.0
• Specification: PLDM for Firmware Update

Required Inventory Commands

• QueryDeviceIdentifiers
• GetFirmwareParameters

Required Update Commands

• RequestFirmwareUpdate
• PassComponentTable
• UpdateComponent
• TransferComplete
• VerifyComplete
• ApplyComplete
• ActivateFirmware
• GetStatus

All responders must also implement the following optional commands:

• GetPackageData
• GetPackageMetaData