Intel Extensible Firmware Interface - Page 76

Extensible Firmware Interface Specification
58 12/12/00 Version 1.02
Related Definitions
//*******************************************************
//EFI_HANDLE
//*******************************************************
typedef VOID *EFI_HANDLE;
//*******************************************************
//EFI_GUID
//*******************************************************
typedef struct {
UINT32 Data1;
UINT16 Data2;
UINT16 Data3;
UINT8 Data4[8];
} EFI_GUID;
//*******************************************************
//EFI_INTERFACE_TYPE
//*******************************************************
typedef enum {
EFI_NATIVE_INTERFACE,
EFI_PCODE_INTERFACE
} EFI INTERFACE_TYPE;
Description
The InstallProtocolInterface() function installs a protocol interface (a GUID/Protocol
Interface structure pair) on a device handle.
Installing a protocol interface allows other components to locate the Handle, and the interfaces
installed on it. A protocol interface is always installed at the head of the device handle’s queue.
When a protocol interface is installed, the firmware calls all notification functions that have
registered to wait for the installation of Protocol. For more information, see Section 3.3.4.
Status Codes Returned
EFI_SUCCESS The protocol interface was installed.
EFI_OUT_OF_RESOURCES Space for a new handle could not be allocated.
EFI_INVALID_PARAMETER One of the parameters has an invalid value.