DataHubDxe

Overview

UEFI Data Hub Protocol DXE driver from IntelFrameworkModulePkg. This small driver registers the EFI_DATA_HUB_PROTOCOL on the system's boot services protocol database, enabling callers to log data records keyed by GUID, iterate over records with class-based filters, and register/unregister for data class notifications. It maintains an internal linked list of data entries and uses UEFI events to signal registered consumers when new data arrives.

Key Functions

• ModuleEntryPoint -- UEFI DXE entry point; initializes private data structure and installs Data Hub protocol
• DataHubDriverEntryPoint -- Allocates and initializes the Data Hub private instance
• DataHubLogData -- Logs a data record identified by GUID and data class into the hub
• DataHubGetNextDataRecord -- Iterates over logged data records with optional filter by GUID and/or data class
• DataHubRegisterDataClass -- Registers a callback event for notification when data of a given class is logged
• DataHubUnregisterDataClass -- Unregisters a previously registered data class notification
• DataHubFindClassByGuid -- Searches for data class entries matching a specific GUID
• DataHubFindDataRecordByFilter -- Finds data records matching provided filter criteria

Dependencies

UEFI Boot Services, UEFI Runtime Services, EFI_DATA_HUB_PROTOCOL

Platform

Lenovo HR650X (Purley/LBG-PCH), X64