Intel Extensible Firmware Interface - Manual (Page 54)

Extensible Firmware Interface Specification
2-14 12/01/02 Version 1.10
Table 2-4 lists the EFI protocols defined by this specification.
Table 2-4. EFI Protocols
Protocol Description
LOADED_IMAGE Provides information on the image.
DEVICE_PATH Provides the location of the device.
DRIVER_BINDING Provides services to determine if an EFI driver supports a given
controller, and services to start and stop a given controller.
PLATFORM_DRIVER_OVERRIDE Provide a platform specific override mechanism for the selection
of the best driver for a given controller.
BUS_SPECIFIC_DRIVER_OVERRIDE Provides a bus specific override mechanism for the selection of
the best driver for a given controller.
DRIVER_CONFIGURATION Provides user configuration options for EFI drivers and the
controllers that the EFI drivers are managing.
DRIVER_DIAGNOSTICS Provides diagnostics services for the controllers that EFI drivers
are managing.
COMPONENT_NAME Provides human readable names for EFI Drivers and the
controllers that the EFI drivers are managing.
SIMPLE_INPUT Protocol interfaces for devices that support simple console style
text input.
SIMPLE_TEXT_OUTPUT Protocol interfaces for devices that support console style text
displaying.
UGA_DRAW Protocolinterfaces for devices that support graphicaloutput.
SIMPLE_POINTER Protocol interfaces for devices such as mice and trackballs.
SERIAL_IO Protocolinterfaces for devices that support serialcharacter
transfer.
LOAD_FILE Protocolinterface for reading a file from an arbitrary device.
SIMPLE_FILE_SYSTEM Protocol interfaces for opening disk volume containing an EFI file
system.
FILE_HANDLE Provides access to supported file systems.
DISK_IO A protocolinterface that layers onto any BLOCK_IO interface.
BLOCK_IO Protocol interfaces for devices that support block I/O style
accesses.
UNICODE_COLLATION Protocolinterfaces for Unicode string comparison operations.
PCI_ROOT_BRIDGE_IO Protocolinterfaces to abstract memory, I/O, PCI configuration,
and DMA accesses to a PCI root bridge controller.
PCI_IO Protocolinterfaces to abstract memory, I/O, PCI configuration,
and DMA accesses to a PCI controller on a PCI bus.
continued