DevicePathDxe

Overview

DevicePathDxe implements three UEFI device path protocol libraries: DevicePathUtilities (core device path node manipulation), DevicePathToText (converts device paths to human-readable strings), and DevicePathFromText (parses text representations back to device path structures). The entry point installs these three protocol interfaces via gBS->InstallMultipleProtocolInterfaces().

Key Functions

• GetDevicePathType -- Reads the Type byte from a device path node
• GetDevicePathSubType -- Reads the SubType byte from a device path node
• GetDevicePathNodeLength -- Returns the length of a device path node
• SetDevicePathNodeLength -- Sets the length field of a device path node
• IsDevicePathEnd -- Checks if a node is the end-of-device-path marker
• DevicePathToTextConvert -- Converts a device path to a human-readable string
• DevicePathFromTextConvert -- Parses a text string into a device path structure
• DuplicateDevicePath -- Creates a copy of a device path
• AppendDevicePath -- Appends two device path instances

Dependencies

• EFI_DEVICE_PATH_UTILITIES_PROTOCOL -- Core manipulation interface
• EFI_DEVICE_PATH_TO_TEXT_PROTOCOL -- Text conversion interface (produced)
• EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL -- Text parsing interface (produced)

Platform

• Source: AmiModulePkg/TCG2/Common/TcgDxe/
• Architecture: X64 (PE32+)
• Formats: PE32+, 6 sections (.text, .rdata, .data, section_3, .xdata, .reloc)
• SHA256: 9139a18c6d78dc89a880b0944c1833e2ae37cda701ca74670f086e65d28ad5bd