mirror of https://github.com/acidanthera/audk.git
88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/** @file
|
|
Boot Device Selection Architectural Protocol as defined in DXE CIS
|
|
|
|
When the DXE core is done it calls the BDS via this protocol.
|
|
|
|
Copyright (c) 2006, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
Module Name: Bds.h
|
|
|
|
@par Revision Reference:
|
|
Version 0.91B.
|
|
|
|
**/
|
|
|
|
#ifndef __ARCH_PROTOCOL_BDS_H__
|
|
#define __ARCH_PROTOCOL_BDS_H__
|
|
|
|
//
|
|
// Global ID for the BDS Architectural Protocol
|
|
//
|
|
#define EFI_BDS_ARCH_PROTOCOL_GUID \
|
|
{ 0x665E3FF6, 0x46CC, 0x11d4, {0x9A, 0x38, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0x4D } }
|
|
|
|
//
|
|
// Declare forward reference for the BDS Architectural Protocol
|
|
//
|
|
typedef struct _EFI_BDS_ARCH_PROTOCOL EFI_BDS_ARCH_PROTOCOL;
|
|
|
|
/**
|
|
This function uses policy data from the platform to determine what operating
|
|
system or system utility should be loaded and invoked. This function call
|
|
also optionally make the use of user input to determine the operating system
|
|
or system utility to be loaded and invoked. When the DXE Core has dispatched
|
|
all the drivers on the dispatch queue, this function is called. This
|
|
function will attempt to connect the boot devices required to load and invoke
|
|
the selected operating system or system utility. During this process,
|
|
additional firmware volumes may be discovered that may contain addition DXE
|
|
drivers that can be dispatched by the DXE Core. If a boot device cannot be
|
|
fully connected, this function calls the DXE Service Dispatch() to allow the
|
|
DXE drivers from any newly discovered firmware volumes to be dispatched.
|
|
Then the boot device connection can be attempted again. If the same boot
|
|
device connection operation fails twice in a row, then that boot device has
|
|
failed, and should be skipped. This function should never return.
|
|
|
|
@param This The EFI_BDS_ARCH_PROTOCOL instance.
|
|
|
|
@return None.
|
|
|
|
**/
|
|
typedef
|
|
VOID
|
|
(EFIAPI *EFI_BDS_ENTRY) (
|
|
IN EFI_BDS_ARCH_PROTOCOL *This
|
|
);
|
|
|
|
/**
|
|
Interface stucture for the BDS Architectural Protocol.
|
|
|
|
@par Protocol Description:
|
|
The EFI_BDS_ARCH_PROTOCOL transfers control from DXE to an operating
|
|
system or a system utility. If there are not enough drivers initialized
|
|
when this protocol is used to access the required boot device(s), then
|
|
this protocol should add drivers to the dispatch queue and return control
|
|
back to the dispatcher. Once the required boot devices are available, then
|
|
the boot device can be used to load and invoke an OS or a system utility.
|
|
|
|
@par Protocol Parameters:
|
|
Entry - The entry point to BDS. This call does not take any parameters,
|
|
and the return value can be ignored. If it returns, then the
|
|
dispatcher must be invoked again, if it never returns, then an
|
|
operating system or a system utility have been invoked.
|
|
|
|
**/
|
|
struct _EFI_BDS_ARCH_PROTOCOL {
|
|
EFI_BDS_ENTRY Entry;
|
|
};
|
|
|
|
extern EFI_GUID gEfiBdsArchProtocolGuid;
|
|
|
|
#endif
|