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[mirror_edk2.git] / MdeModulePkg / Include / Ppi / FindFv.h
1 /** @file
2 This file declares FindFv PPI used to locate FVs that contain PEIMs in PEI
3
4 Copyright (c) 2006, Intel Corporation
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 Module Name: FindFv.h
14
15 @par Revision Reference:
16 This PPI is defined in PEI CIS
17 Version 0.91
18
19 **/
20
21 #ifndef __FIND_FV_H__
22 #define __FIND_FV_H__
23
24 #define EFI_PEI_FIND_FV_PPI_GUID \
25 { \
26 0x36164812, 0xa023, 0x44e5, {0xbd, 0x85, 0x5, 0xbf, 0x3c, 0x77, 0x0, 0xaa } \
27 }
28
29 typedef struct _EFI_PEI_FIND_FV_PPI EFI_PEI_FIND_FV_PPI;
30
31 /**
32 This interface returns the base address of the firmware volume whose index
33 was passed in FvNumber.Once this function reports a firmware volume
34 index/base address pair, that index/address pairing must continue throughout PEI.
35
36 @param PeiServices Pointer to the PEI Services Table.
37 @param This Interface pointer that implements the Find FV service.
38 @param FvNumber The index of the firmware volume to locate.
39 @param FvAddress The address of the volume to discover.
40
41 @retval EFI_SUCCESS An additional firmware volume was found.
42 @retval EFI_OUT_OF_RESOURCES There are no firmware volumes for the given FvNumber.
43 @retval EFI_INVALID_PARAMETER *FvAddress is NULL.
44
45 **/
46 typedef
47 EFI_STATUS
48 (EFIAPI *EFI_PEI_FIND_FV_FINDFV) (
49 IN EFI_PEI_FIND_FV_PPI *This,
50 IN EFI_PEI_SERVICES **PeiServices,
51 UINT8 *FvNumber,
52 EFI_FIRMWARE_VOLUME_HEADER **FVAddress
53 );
54
55 /**
56 @par Ppi Description:
57 Hardware mechanisms for locating FVs in a platform vary widely.
58 EFI_PEI_FIND_FV_PPI serves to abstract this variation so that the
59 PEI Foundation can remain standard across a wide variety of platforms.
60
61 @param FindFv
62 Service that abstracts the location of additional firmware volumes.
63
64 **/
65 struct _EFI_PEI_FIND_FV_PPI {
66 EFI_PEI_FIND_FV_FINDFV FindFv;
67 };
68
69 extern EFI_GUID gEfiFindFvPpiGuid;
70
71 #endif