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Extensible Firmware Interface Specification
K-20 12/01/02 Version 1.10
Table K-2. Functions Listed Alphabetically within a Service or Protocol (continued)
Service or Protocol Function Function Description
AllocatePages Allocates memory pages of a particular type.
AllocatePool Allocates pool of a particular type.
CalculateCrc32 Computes and returns a 32-bit CRC for a data buffer.
CheckEvent Checks whether an event is in the signaled state.
CloseEvent Closes and frees an event structure.
CloseProtocol Removes elements from the list of agents consuming
a protocol interface.
ConnectController Uses a set of precedence rules to find the best set of
drivers to manage a controller.
CopyMem Copies the contents of one buffer to another buffer.
CreateEvent Creates a general-purpose event structure.
DisconnectController Informs a set of drivers to stop managing a controller.
EFI_IMAGE_
ENTRY_POINT
Prototype of an EFI Image’s entry point.
Exit Exits the image’s entry point.
ExitBootServices Terminates boot services.
FreePages Frees memory pages.
FreePool Frees allocated pool.
GetMemoryMap Returns the current boot services memory map and
memory map key.
GetNextMonotonicCount Returns a monotonically increasing count for the
platform.
HandleProtocol Queries the list of protocol handlers on a device
handle for the requested Protocol Interface.
InstallConfigurationTable Adds, updates, or removes a configuration table from
the EFI System Table
InstallMultipleProtocol
Interfaces
Installs one or more protocol interfaces onto a handle.
InstallProtocolInterface Adds a protocol interface to an existing or new device
handle.
LoadImage Function to dynamically load another EFI Image.
LocateDevicePath Locates the closest handle that supports the specified
protocol on the specified device path.
LocateHandle Locates the handle(s) that support the specified
protocol.
Boot Services
LocateHandleBuffer
Retrieves the list of handles from the handle
database that meet the search criteria. The return
buffer is automatically allocated.
continued