[mirror_edk2.git] / MdeModulePkg / Core / Dxe / FwVolDriver.h

/** @file\r
  Firmware File System protocol. Layers on top of Firmware\r
  Block protocol to produce a file abstraction of FV based files.\r
\r
Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef __FW_VOL_DRIVER_H_\r
#define __FW_VOL_DRIVER_H_\r
\r
\r
#define FV2_DEVICE_SIGNATURE EFI_SIGNATURE_32 ('_', 'F', 'V', '2')\r
\r
//\r
// Used to track all non-deleted files\r
//\r
typedef struct {\r
  LIST_ENTRY                      Link;\r
  EFI_FFS_FILE_HEADER             *FfsHeader;\r
  UINTN                           StreamHandle;\r
} FFS_FILE_LIST_ENTRY;\r
\r
typedef struct {\r
  UINTN                                   Signature;\r
  EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL      *Fvb;\r
  EFI_HANDLE                              Handle;\r
  EFI_FIRMWARE_VOLUME2_PROTOCOL           Fv;\r
\r
  EFI_FIRMWARE_VOLUME_HEADER              *FwVolHeader;\r
  UINT8                                   *CachedFv;\r
  UINT8                                   *EndOfCachedFv;\r
\r
  FFS_FILE_LIST_ENTRY                     *LastKey;\r
\r
  LIST_ENTRY                              FfsFileListHeader;\r
\r
  UINT8                                   ErasePolarity;\r
} FV_DEVICE;\r
\r
#define FV_DEVICE_FROM_THIS(a) CR(a, FV_DEVICE, Fv, FV2_DEVICE_SIGNATURE)\r
\r
/**\r
  Retrieves attributes, insures positive polarity of attribute bits, returns\r
  resulting attributes in output parameter.\r
\r
  @param  This             Calling context \r
  @param  Attributes       output buffer which contains attributes \r
\r
  @retval EFI_SUCCESS      Successfully got volume attributes\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetVolumeAttributes (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
  OUT       EFI_FV_ATTRIBUTES             *Attributes\r
  );\r
\r
\r
/**\r
  Sets current attributes for volume\r
\r
  @param  This             Calling context \r
  @param  Attributes       At input, contains attributes to be set.  At output \r
                           contains new value of FV \r
\r
  @retval EFI_UNSUPPORTED  Could not be set.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvSetVolumeAttributes (\r
  IN     CONST EFI_FIRMWARE_VOLUME2_PROTOCOL  *This,\r
  IN OUT       EFI_FV_ATTRIBUTES              *Attributes\r
  );\r
\r
\r
/**\r
  Given the input key, search for the next matching file in the volume.\r
\r
  @param  This                       Indicates the calling context. \r
  @param  Key                        Key is a pointer to a caller allocated \r
                                     buffer that contains implementation specific \r
                                     data that is used to track where to begin \r
                                     the search for the next file. The size of \r
                                     the buffer must be at least This->KeySize \r
                                     bytes long. To reinitialize the search and \r
                                     begin from the beginning of the firmware \r
                                     volume, the entire buffer must be cleared to \r
                                     zero. Other than clearing the buffer to \r
                                     initiate a new search, the caller must not \r
                                     modify the data in the buffer between calls \r
                                     to GetNextFile(). \r
  @param  FileType                   FileType is a pointer to a caller allocated \r
                                     EFI_FV_FILETYPE. The GetNextFile() API can \r
                                     filter it's search for files based on the \r
                                     value of *FileType input. A *FileType input \r
                                     of 0 causes GetNextFile() to search for \r
                                     files of all types.  If a file is found, the \r
                                     file's type is returned in *FileType.  \r
                                     *FileType is not modified if no file is \r
                                     found. \r
  @param  NameGuid                   NameGuid is a pointer to a caller allocated \r
                                     EFI_GUID. If a file is found, the file's \r
                                     name is returned in *NameGuid.  *NameGuid is \r
                                     not modified if no file is found. \r
  @param  Attributes                 Attributes is a pointer to a caller \r
                                     allocated EFI_FV_FILE_ATTRIBUTES.  If a file \r
                                     is found, the file's attributes are returned \r
                                     in *Attributes. *Attributes is not modified \r
                                     if no file is found. \r
  @param  Size                       Size is a pointer to a caller allocated \r
                                     UINTN. If a file is found, the file's size \r
                                     is returned in *Size. *Size is not modified \r
                                     if no file is found. \r
\r
  @retval EFI_SUCCESS                Successfully find the file. \r
  @retval EFI_DEVICE_ERROR           Device error. \r
  @retval EFI_ACCESS_DENIED          Fv could not read. \r
  @retval EFI_NOT_FOUND              No matching file found. \r
  @retval EFI_INVALID_PARAMETER      Invalid parameter\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetNextFile (\r
  IN CONST   EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
  IN OUT     VOID                          *Key,\r
  IN OUT     EFI_FV_FILETYPE               *FileType,\r
  OUT        EFI_GUID                      *NameGuid,\r
  OUT        EFI_FV_FILE_ATTRIBUTES        *Attributes,\r
  OUT        UINTN                         *Size\r
  );\r
\r
\r
\r
/**\r
  Locates a file in the firmware volume and\r
  copies it to the supplied buffer.\r
\r
  @param  This                       Indicates the calling context. \r
  @param  NameGuid                   Pointer to an EFI_GUID, which is the \r
                                     filename. \r
  @param  Buffer                     Buffer is a pointer to pointer to a buffer \r
                                     in which the file or section contents or are \r
                                     returned. \r
  @param  BufferSize                 BufferSize is a pointer to caller allocated \r
                                     UINTN. On input *BufferSize indicates the \r
                                     size in bytes of the memory region pointed \r
                                     to by Buffer. On output, *BufferSize \r
                                     contains the number of bytes required to \r
                                     read the file. \r
  @param  FoundType                  FoundType is a pointer to a caller allocated \r
                                     EFI_FV_FILETYPE that on successful return \r
                                     from Read() contains the type of file read.  \r
                                     This output reflects the file type \r
                                     irrespective of the value of the SectionType \r
                                     input. \r
  @param  FileAttributes             FileAttributes is a pointer to a caller \r
                                     allocated EFI_FV_FILE_ATTRIBUTES.  On \r
                                     successful return from Read(), \r
                                     *FileAttributes contains the attributes of \r
                                     the file read. \r
  @param  AuthenticationStatus       AuthenticationStatus is a pointer to a \r
                                     caller allocated UINTN in which the \r
                                     authentication status is returned. \r
\r
  @retval EFI_SUCCESS                Successfully read to memory buffer. \r
  @retval EFI_WARN_BUFFER_TOO_SMALL  Buffer too small. \r
  @retval EFI_NOT_FOUND              Not found. \r
  @retval EFI_DEVICE_ERROR           Device error. \r
  @retval EFI_ACCESS_DENIED          Could not read. \r
  @retval EFI_INVALID_PARAMETER      Invalid parameter. \r
  @retval EFI_OUT_OF_RESOURCES       Not enough buffer to be allocated.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvReadFile (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
  IN CONST EFI_GUID                      *NameGuid,\r
  IN OUT   VOID                          **Buffer,\r
  IN OUT   UINTN                         *BufferSize,\r
  OUT      EFI_FV_FILETYPE               *FoundType,\r
  OUT      EFI_FV_FILE_ATTRIBUTES        *FileAttributes,\r
  OUT      UINT32                        *AuthenticationStatus\r
  );\r
\r
\r
/**\r
  Locates a section in a given FFS File and\r
  copies it to the supplied buffer (not including section header).\r
\r
  @param  This                       Indicates the calling context. \r
  @param  NameGuid                   Pointer to an EFI_GUID, which is the \r
                                     filename. \r
  @param  SectionType                Indicates the section type to return. \r
  @param  SectionInstance            Indicates which instance of sections with a \r
                                     type of SectionType to return. \r
  @param  Buffer                     Buffer is a pointer to pointer to a buffer \r
                                     in which the file or section contents or are \r
                                     returned. \r
  @param  BufferSize                 BufferSize is a pointer to caller allocated \r
                                     UINTN.\r
  @param  AuthenticationStatus       AuthenticationStatus is a pointer to a \r
                                     caller allocated UINT32 in which the \r
                                     authentication status is returned. \r
\r
  @retval EFI_SUCCESS                Successfully read the file section into \r
                                     buffer. \r
  @retval EFI_WARN_BUFFER_TOO_SMALL  Buffer too small. \r
  @retval EFI_NOT_FOUND              Section not found. \r
  @retval EFI_DEVICE_ERROR           Device error. \r
  @retval EFI_ACCESS_DENIED          Could not read. \r
  @retval EFI_INVALID_PARAMETER      Invalid parameter.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvReadFileSection (\r
  IN CONST  EFI_FIRMWARE_VOLUME2_PROTOCOL  *This,\r
  IN CONST  EFI_GUID                       *NameGuid,\r
  IN        EFI_SECTION_TYPE               SectionType,\r
  IN        UINTN                          SectionInstance,\r
  IN OUT    VOID                           **Buffer,\r
  IN OUT    UINTN                          *BufferSize,\r
  OUT       UINT32                         *AuthenticationStatus\r
  );\r
\r
\r
/**\r
  Writes one or more files to the firmware volume.\r
\r
  @param  This                   Indicates the calling context. \r
  @param  NumberOfFiles          Number of files. \r
  @param  WritePolicy            WritePolicy indicates the level of reliability \r
                                 for the write in the event of a power failure or \r
                                 other system failure during the write operation. \r
  @param  FileData               FileData is an pointer to an array of \r
                                 EFI_FV_WRITE_DATA. Each element of array\r
                                 FileData represents a file to be written. \r
\r
  @retval EFI_SUCCESS            Files successfully written to firmware volume \r
  @retval EFI_OUT_OF_RESOURCES   Not enough buffer to be allocated. \r
  @retval EFI_DEVICE_ERROR       Device error. \r
  @retval EFI_WRITE_PROTECTED    Write protected. \r
  @retval EFI_NOT_FOUND          Not found. \r
  @retval EFI_INVALID_PARAMETER  Invalid parameter. \r
  @retval EFI_UNSUPPORTED        This function not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvWriteFile (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL  *This,\r
  IN       UINT32                         NumberOfFiles,\r
  IN       EFI_FV_WRITE_POLICY            WritePolicy,\r
  IN       EFI_FV_WRITE_FILE_DATA         *FileData\r
  );\r
\r
\r
/**\r
  Return information of type InformationType for the requested firmware\r
  volume.\r
\r
  @param  This             Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL. \r
  @param  InformationType  InformationType for requested. \r
  @param  BufferSize       On input, size of Buffer.On output, the amount of data \r
                           returned in Buffer. \r
  @param  Buffer           A poniter to the data buffer to return. \r
\r
  @retval EFI_SUCCESS      Successfully got volume Information.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetVolumeInfo (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL       *This,\r
  IN  CONST EFI_GUID                            *InformationType,\r
  IN OUT UINTN                                  *BufferSize,\r
  OUT VOID                                      *Buffer\r
  );\r
\r
\r
\r
/**\r
  Set information of type InformationType for the requested firmware\r
  volume.\r
\r
  @param  This             Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL. \r
  @param  InformationType  InformationType for requested. \r
  @param  BufferSize       On input, size of Buffer.On output, the amount of data \r
                           returned in Buffer. \r
  @param  Buffer           A poniter to the data buffer to return. \r
\r
  @retval EFI_SUCCESS      Successfully set volume Information.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvSetVolumeInfo (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL       *This,\r
  IN  CONST EFI_GUID                            *InformationType,\r
  IN  UINTN                                     BufferSize,\r
  IN CONST  VOID                                *Buffer\r
  );\r
  \r
//\r
//Internal functions\r
//\r
typedef enum {\r
  EfiCheckSumUint8    = 0,\r
  EfiCheckSumUint16   = 1,\r
  EfiCheckSumUint32   = 2,\r
  EfiCheckSumUint64   = 3,\r
  EfiCheckSumMaximum  = 4\r
} EFI_CHECKSUM_TYPE;\r
\r
\r
\r
/**\r
  Check if a block of buffer is erased.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume \r
  @param  InBuffer       The buffer to be checked \r
  @param  BufferSize     Size of the buffer in bytes \r
\r
  @retval TRUE           The block of buffer is erased \r
  @retval FALSE          The block of buffer is not erased\r
\r
**/\r
BOOLEAN\r
IsBufferErased (\r
  IN UINT8    ErasePolarity,\r
  IN VOID     *InBuffer,\r
  IN UINTN    BufferSize\r
  );\r
\r
\r
/**\r
  Get the FFS file state by checking the highest bit set in the header's state field.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume \r
  @param  FfsHeader      Points to the FFS file header \r
\r
  @return FFS File state\r
\r
**/\r
EFI_FFS_FILE_STATE\r
GetFileState (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
\r
/**\r
  Set the FFS file state.\r
\r
  @param  State                      The state to be set. \r
  @param  FfsHeader                  Points to the FFS file header \r
\r
  @return None.\r
\r
**/\r
VOID\r
SetFileState (\r
  IN UINT8                State,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
\r
/**\r
  Verify checksum of the firmware volume header.\r
\r
  @param  FvHeader       Points to the firmware volume header to be checked \r
\r
  @retval TRUE           Checksum verification passed \r
  @retval FALSE          Checksum verification failed\r
\r
**/\r
BOOLEAN\r
VerifyFvHeaderChecksum (\r
  IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader\r
  );\r
    \r
\r
/**\r
  Check if it's a valid FFS file header.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume \r
  @param  FfsHeader      Points to the FFS file header to be checked \r
  @param  FileState      FFS file state to be returned \r
\r
  @retval TRUE           Valid FFS file header \r
  @retval FALSE          Invalid FFS file header\r
\r
**/\r
BOOLEAN\r
IsValidFfsHeader (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader,\r
  OUT EFI_FFS_FILE_STATE  *FileState\r
  );\r
\r
\r
/**\r
  Check if it's a valid FFS file.\r
  Here we are sure that it has a valid FFS file header since we must call IsValidFfsHeader() first.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume \r
  @param  FfsHeader      Points to the FFS file to be checked \r
\r
  @retval TRUE           Valid FFS file \r
  @retval FALSE          Invalid FFS file\r
\r
**/\r
BOOLEAN\r
IsValidFfsFile (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
\r
/**\r
  given the supplied FW_VOL_BLOCK_PROTOCOL, allocate a buffer for output and\r
  copy the volume header into it.\r
\r
  @param  Fvb                   The FW_VOL_BLOCK_PROTOCOL instance from which to \r
                                read the volume header \r
  @param  FwVolHeader           Pointer to pointer to allocated buffer in which \r
                                the volume header is returned. \r
\r
  @retval EFI_OUT_OF_RESOURCES  No enough buffer could be allocated. \r
  @retval EFI_SUCCESS           Successfully read volume header to the allocated \r
                                buffer.\r
\r
**/\r
EFI_STATUS\r
GetFwVolHeader (\r
  IN     EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL     *Fvb,\r
  OUT    EFI_FIRMWARE_VOLUME_HEADER             **FwVolHeader\r
  );\r
\r
\r
\r
/**\r
  Check if a FV is consistent and allocate cache\r
\r
  @param  FvDevice              pointer to the FvDevice to be checked. \r
\r
  @retval EFI_OUT_OF_RESOURCES  No enough buffer could be allocated. \r
  @retval EFI_SUCCESS           FV is consistent and cache is allocated. \r
  @retval EFI_VOLUME_CORRUPTED  File system is corrupted.\r
\r
**/\r
EFI_STATUS\r
FvCheck (\r
  IN OUT FV_DEVICE  *FvDevice\r
  );\r
\r
#endif\r
Commit	Line	Data
162ed594	1	/** @file\r
797a9d67	2	Firmware File System protocol. Layers on top of Firmware\r
797a9d67	3	Block protocol to produce a file abstraction of FV based files.\r
23c98c94	4	\r
	5	Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
	6	All rights reserved. This program and the accompanying materials\r
	7	are licensed and made available under the terms and conditions of the BSD License\r
	8	which accompanies this distribution. The full text of the license may be found at\r
	9	http://opensource.org/licenses/bsd-license.php\r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
28a00297	13	\r
797a9d67	14	**/\r
28a00297	15	\r
162ed594	16	#ifndef __FW_VOL_DRIVER_H_\r
162ed594	17	#define __FW_VOL_DRIVER_H_\r
28a00297	18	\r
28a00297	19	\r
0c2b5da8	20	#define FV2_DEVICE_SIGNATURE EFI_SIGNATURE_32 ('_', 'F', 'V', '2')\r
0c2b5da8	21	\r
28a00297	22	//\r
	23	// Used to track all non-deleted files\r
	24	//\r
	25	typedef struct {\r
	26	LIST_ENTRY Link;\r
	27	EFI_FFS_FILE_HEADER *FfsHeader;\r
	28	UINTN StreamHandle;\r
28a00297	29	} FFS_FILE_LIST_ENTRY;\r
	30	\r
	31	typedef struct {\r
	32	UINTN Signature;\r
	33	EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
	34	EFI_HANDLE Handle;\r
0c2b5da8	35	EFI_FIRMWARE_VOLUME2_PROTOCOL Fv;\r
28a00297	36	\r
	37	EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
	38	UINT8 *CachedFv;\r
	39	UINT8 *EndOfCachedFv;\r
	40	\r
	41	FFS_FILE_LIST_ENTRY *LastKey;\r
	42	\r
	43	LIST_ENTRY FfsFileListHeader;\r
	44	\r
	45	UINT8 ErasePolarity;\r
	46	} FV_DEVICE;\r
	47	\r
0c2b5da8	48	#define FV_DEVICE_FROM_THIS(a) CR(a, FV_DEVICE, Fv, FV2_DEVICE_SIGNATURE)\r
28a00297	49	\r
162ed594	50	/**\r
	51	Retrieves attributes, insures positive polarity of attribute bits, returns\r
	52	resulting attributes in output parameter.\r
28a00297	53	\r
162ed594	54	@param This Calling context \r
	55	@param Attributes output buffer which contains attributes \r
	56	\r
	57	@retval EFI_SUCCESS Successfully got volume attributes\r
	58	\r
	59	**/\r
28a00297	60	EFI_STATUS\r
	61	EFIAPI\r
	62	FvGetVolumeAttributes (\r
23c98c94	63	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	64	OUT EFI_FV_ATTRIBUTES *Attributes\r
	65	);\r
28a00297	66	\r
28a00297	67	\r
162ed594	68	/**\r
162ed594	69	Sets current attributes for volume\r
28a00297	70	\r
162ed594	71	@param This Calling context \r
	72	@param Attributes At input, contains attributes to be set. At output \r
	73	contains new value of FV \r
28a00297	74	\r
162ed594	75	@retval EFI_UNSUPPORTED Could not be set.\r
28a00297	76	\r
162ed594	77	**/\r
28a00297	78	EFI_STATUS\r
	79	EFIAPI\r
	80	FvSetVolumeAttributes (\r
23c98c94	81	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	82	IN OUT EFI_FV_ATTRIBUTES *Attributes\r
	83	);\r
28a00297	84	\r
28a00297	85	\r
162ed594	86	/**\r
	87	Given the input key, search for the next matching file in the volume.\r
	88	\r
	89	@param This Indicates the calling context. \r
	90	@param Key Key is a pointer to a caller allocated \r
	91	buffer that contains implementation specific \r
	92	data that is used to track where to begin \r
	93	the search for the next file. The size of \r
	94	the buffer must be at least This->KeySize \r
	95	bytes long. To reinitialize the search and \r
	96	begin from the beginning of the firmware \r
	97	volume, the entire buffer must be cleared to \r
	98	zero. Other than clearing the buffer to \r
	99	initiate a new search, the caller must not \r
	100	modify the data in the buffer between calls \r
	101	to GetNextFile(). \r
	102	@param FileType FileType is a pointer to a caller allocated \r
	103	EFI_FV_FILETYPE. The GetNextFile() API can \r
	104	filter it's search for files based on the \r
	105	value of FileType input. A FileType input \r
	106	of 0 causes GetNextFile() to search for \r
	107	files of all types. If a file is found, the \r
	108	file's type is returned in *FileType. \r
	109	*FileType is not modified if no file is \r
	110	found. \r
	111	@param NameGuid NameGuid is a pointer to a caller allocated \r
	112	EFI_GUID. If a file is found, the file's \r
	113	name is returned in NameGuid. NameGuid is \r
	114	not modified if no file is found. \r
	115	@param Attributes Attributes is a pointer to a caller \r
	116	allocated EFI_FV_FILE_ATTRIBUTES. If a file \r
	117	is found, the file's attributes are returned \r
	118	in Attributes. Attributes is not modified \r
	119	if no file is found. \r
	120	@param Size Size is a pointer to a caller allocated \r
	121	UINTN. If a file is found, the file's size \r
	122	is returned in Size. Size is not modified \r
	123	if no file is found. \r
	124	\r
	125	@retval EFI_SUCCESS Successfully find the file. \r
	126	@retval EFI_DEVICE_ERROR Device error. \r
	127	@retval EFI_ACCESS_DENIED Fv could not read. \r
	128	@retval EFI_NOT_FOUND No matching file found. \r
	129	@retval EFI_INVALID_PARAMETER Invalid parameter\r
28a00297	130	\r
162ed594	131	**/\r
28a00297	132	EFI_STATUS\r
	133	EFIAPI\r
	134	FvGetNextFile (\r
23c98c94	135	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	136	IN OUT VOID *Key,\r
	137	IN OUT EFI_FV_FILETYPE *FileType,\r
	138	OUT EFI_GUID *NameGuid,\r
	139	OUT EFI_FV_FILE_ATTRIBUTES *Attributes,\r
	140	OUT UINTN *Size\r
	141	);\r
28a00297	142	\r
28a00297	143	\r
162ed594	144	\r
	145	/**\r
	146	Locates a file in the firmware volume and\r
	147	copies it to the supplied buffer.\r
	148	\r
	149	@param This Indicates the calling context. \r
	150	@param NameGuid Pointer to an EFI_GUID, which is the \r
	151	filename. \r
	152	@param Buffer Buffer is a pointer to pointer to a buffer \r
	153	in which the file or section contents or are \r
	154	returned. \r
	155	@param BufferSize BufferSize is a pointer to caller allocated \r
	156	UINTN. On input *BufferSize indicates the \r
	157	size in bytes of the memory region pointed \r
	158	to by Buffer. On output, *BufferSize \r
	159	contains the number of bytes required to \r
	160	read the file. \r
	161	@param FoundType FoundType is a pointer to a caller allocated \r
	162	EFI_FV_FILETYPE that on successful return \r
	163	from Read() contains the type of file read. \r
	164	This output reflects the file type \r
	165	irrespective of the value of the SectionType \r
	166	input. \r
	167	@param FileAttributes FileAttributes is a pointer to a caller \r
	168	allocated EFI_FV_FILE_ATTRIBUTES. On \r
	169	successful return from Read(), \r
	170	*FileAttributes contains the attributes of \r
	171	the file read. \r
	172	@param AuthenticationStatus AuthenticationStatus is a pointer to a \r
	173	caller allocated UINTN in which the \r
	174	authentication status is returned. \r
	175	\r
	176	@retval EFI_SUCCESS Successfully read to memory buffer. \r
	177	@retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small. \r
	178	@retval EFI_NOT_FOUND Not found. \r
	179	@retval EFI_DEVICE_ERROR Device error. \r
	180	@retval EFI_ACCESS_DENIED Could not read. \r
	181	@retval EFI_INVALID_PARAMETER Invalid parameter. \r
	182	@retval EFI_OUT_OF_RESOURCES Not enough buffer to be allocated.\r
	183	\r
	184	**/\r
28a00297	185	EFI_STATUS\r
	186	EFIAPI\r
	187	FvReadFile (\r
23c98c94	188	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	189	IN CONST EFI_GUID *NameGuid,\r
	190	IN OUT VOID **Buffer,\r
	191	IN OUT UINTN *BufferSize,\r
	192	OUT EFI_FV_FILETYPE *FoundType,\r
	193	OUT EFI_FV_FILE_ATTRIBUTES *FileAttributes,\r
	194	OUT UINT32 *AuthenticationStatus\r
	195	);\r
28a00297	196	\r
162ed594	197	\r
	198	/**\r
	199	Locates a section in a given FFS File and\r
	200	copies it to the supplied buffer (not including section header).\r
	201	\r
	202	@param This Indicates the calling context. \r
	203	@param NameGuid Pointer to an EFI_GUID, which is the \r
	204	filename. \r
	205	@param SectionType Indicates the section type to return. \r
	206	@param SectionInstance Indicates which instance of sections with a \r
	207	type of SectionType to return. \r
	208	@param Buffer Buffer is a pointer to pointer to a buffer \r
	209	in which the file or section contents or are \r
	210	returned. \r
	211	@param BufferSize BufferSize is a pointer to caller allocated \r
	212	UINTN.\r
	213	@param AuthenticationStatus AuthenticationStatus is a pointer to a \r
	214	caller allocated UINT32 in which the \r
	215	authentication status is returned. \r
	216	\r
	217	@retval EFI_SUCCESS Successfully read the file section into \r
	218	buffer. \r
	219	@retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small. \r
	220	@retval EFI_NOT_FOUND Section not found. \r
	221	@retval EFI_DEVICE_ERROR Device error. \r
	222	@retval EFI_ACCESS_DENIED Could not read. \r
	223	@retval EFI_INVALID_PARAMETER Invalid parameter.\r
	224	\r
	225	**/\r
28a00297	226	EFI_STATUS\r
	227	EFIAPI\r
	228	FvReadFileSection (\r
23c98c94	229	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
0c2b5da8	230	IN CONST EFI_GUID *NameGuid,\r
	231	IN EFI_SECTION_TYPE SectionType,\r
	232	IN UINTN SectionInstance,\r
	233	IN OUT VOID **Buffer,\r
	234	IN OUT UINTN *BufferSize,\r
	235	OUT UINT32 *AuthenticationStatus\r
23c98c94	236	);\r
28a00297	237	\r
162ed594	238	\r
	239	/**\r
	240	Writes one or more files to the firmware volume.\r
	241	\r
	242	@param This Indicates the calling context. \r
	243	@param NumberOfFiles Number of files. \r
	244	@param WritePolicy WritePolicy indicates the level of reliability \r
	245	for the write in the event of a power failure or \r
	246	other system failure during the write operation. \r
	247	@param FileData FileData is an pointer to an array of \r
	248	EFI_FV_WRITE_DATA. Each element of array\r
	249	FileData represents a file to be written. \r
	250	\r
	251	@retval EFI_SUCCESS Files successfully written to firmware volume \r
	252	@retval EFI_OUT_OF_RESOURCES Not enough buffer to be allocated. \r
	253	@retval EFI_DEVICE_ERROR Device error. \r
	254	@retval EFI_WRITE_PROTECTED Write protected. \r
	255	@retval EFI_NOT_FOUND Not found. \r
	256	@retval EFI_INVALID_PARAMETER Invalid parameter. \r
	257	@retval EFI_UNSUPPORTED This function not supported.\r
	258	\r
	259	**/\r
28a00297	260	EFI_STATUS\r
	261	EFIAPI\r
	262	FvWriteFile (\r
23c98c94	263	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	264	IN UINT32 NumberOfFiles,\r
	265	IN EFI_FV_WRITE_POLICY WritePolicy,\r
	266	IN EFI_FV_WRITE_FILE_DATA *FileData\r
	267	);\r
28a00297	268	\r
162ed594	269	\r
	270	/**\r
	271	Return information of type InformationType for the requested firmware\r
	272	volume.\r
	273	\r
	274	@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL. \r
	275	@param InformationType InformationType for requested. \r
	276	@param BufferSize On input, size of Buffer.On output, the amount of data \r
	277	returned in Buffer. \r
	278	@param Buffer A poniter to the data buffer to return. \r
	279	\r
	280	@retval EFI_SUCCESS Successfully got volume Information.\r
	281	\r
	282	**/\r
0c2b5da8	283	EFI_STATUS\r
	284	EFIAPI\r
	285	FvGetVolumeInfo (\r
	286	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	287	IN CONST EFI_GUID *InformationType,\r
23c98c94	288	IN OUT UINTN *BufferSize,\r
	289	OUT VOID *Buffer\r
	290	);\r
0c2b5da8	291	\r
162ed594	292	\r
	293	\r
	294	/**\r
	295	Set information of type InformationType for the requested firmware\r
0c2b5da8	296	volume.\r
0c2b5da8	297	\r
162ed594	298	@param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL. \r
	299	@param InformationType InformationType for requested. \r
	300	@param BufferSize On input, size of Buffer.On output, the amount of data \r
	301	returned in Buffer. \r
	302	@param Buffer A poniter to the data buffer to return. \r
	303	\r
	304	@retval EFI_SUCCESS Successfully set volume Information.\r
28a00297	305	\r
162ed594	306	**/\r
0c2b5da8	307	EFI_STATUS\r
	308	EFIAPI\r
	309	FvSetVolumeInfo (\r
	310	IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r
	311	IN CONST EFI_GUID *InformationType,\r
23c98c94	312	IN UINTN BufferSize,\r
	313	IN CONST VOID *Buffer\r
	314	);\r
28a00297	315	\r
	316	//\r
	317	//Internal functions\r
	318	//\r
	319	typedef enum {\r
	320	EfiCheckSumUint8 = 0,\r
	321	EfiCheckSumUint16 = 1,\r
	322	EfiCheckSumUint32 = 2,\r
	323	EfiCheckSumUint64 = 3,\r
	324	EfiCheckSumMaximum = 4\r
	325	} EFI_CHECKSUM_TYPE;\r
	326	\r
	327	\r
162ed594	328	\r
	329	/**\r
	330	Check if a block of buffer is erased.\r
	331	\r
	332	@param ErasePolarity Erase polarity attribute of the firmware volume \r
	333	@param InBuffer The buffer to be checked \r
	334	@param BufferSize Size of the buffer in bytes \r
	335	\r
	336	@retval TRUE The block of buffer is erased \r
	337	@retval FALSE The block of buffer is not erased\r
	338	\r
	339	**/\r
28a00297	340	BOOLEAN\r
	341	IsBufferErased (\r
	342	IN UINT8 ErasePolarity,\r
23c98c94	343	IN VOID *InBuffer,\r
28a00297	344	IN UINTN BufferSize\r
23c98c94	345	);\r
28a00297	346	\r
28a00297	347	\r
162ed594	348	/**\r
162ed594	349	Get the FFS file state by checking the highest bit set in the header's state field.\r
28a00297	350	\r
162ed594	351	@param ErasePolarity Erase polarity attribute of the firmware volume \r
	352	@param FfsHeader Points to the FFS file header \r
	353	\r
	354	@return FFS File state\r
	355	\r
	356	**/\r
23c98c94	357	EFI_FFS_FILE_STATE\r
28a00297	358	GetFileState (\r
	359	IN UINT8 ErasePolarity,\r
	360	IN EFI_FFS_FILE_HEADER *FfsHeader\r
23c98c94	361	);\r
28a00297	362	\r
28a00297	363	\r
162ed594	364	/**\r
	365	Set the FFS file state.\r
	366	\r
	367	@param State The state to be set. \r
	368	@param FfsHeader Points to the FFS file header \r
	369	\r
	370	@return None.\r
28a00297	371	\r
162ed594	372	**/\r
28a00297	373	VOID\r
	374	SetFileState (\r
	375	IN UINT8 State,\r
	376	IN EFI_FFS_FILE_HEADER *FfsHeader\r
23c98c94	377	);\r
28a00297	378	\r
28a00297	379	\r
162ed594	380	/**\r
	381	Verify checksum of the firmware volume header.\r
	382	\r
	383	@param FvHeader Points to the firmware volume header to be checked \r
28a00297	384	\r
162ed594	385	@retval TRUE Checksum verification passed \r
	386	@retval FALSE Checksum verification failed\r
	387	\r
	388	**/\r
28a00297	389	BOOLEAN\r
	390	VerifyFvHeaderChecksum (\r
	391	IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader\r
23c98c94	392	);\r
28a00297	393	\r
162ed594	394	\r
	395	/**\r
	396	Check if it's a valid FFS file header.\r
	397	\r
	398	@param ErasePolarity Erase polarity attribute of the firmware volume \r
	399	@param FfsHeader Points to the FFS file header to be checked \r
	400	@param FileState FFS file state to be returned \r
	401	\r
	402	@retval TRUE Valid FFS file header \r
	403	@retval FALSE Invalid FFS file header\r
	404	\r
	405	**/\r
28a00297	406	BOOLEAN\r
28a00297	407	IsValidFfsHeader (\r
23c98c94	408	IN UINT8 ErasePolarity,\r
	409	IN EFI_FFS_FILE_HEADER *FfsHeader,\r
	410	OUT EFI_FFS_FILE_STATE *FileState\r
	411	);\r
28a00297	412	\r
28a00297	413	\r
162ed594	414	/**\r
	415	Check if it's a valid FFS file.\r
	416	Here we are sure that it has a valid FFS file header since we must call IsValidFfsHeader() first.\r
	417	\r
	418	@param ErasePolarity Erase polarity attribute of the firmware volume \r
	419	@param FfsHeader Points to the FFS file to be checked \r
28a00297	420	\r
162ed594	421	@retval TRUE Valid FFS file \r
	422	@retval FALSE Invalid FFS file\r
	423	\r
	424	**/\r
28a00297	425	BOOLEAN\r
	426	IsValidFfsFile (\r
	427	IN UINT8 ErasePolarity,\r
	428	IN EFI_FFS_FILE_HEADER *FfsHeader\r
23c98c94	429	);\r
28a00297	430	\r
28a00297	431	\r
162ed594	432	/**\r
	433	given the supplied FW_VOL_BLOCK_PROTOCOL, allocate a buffer for output and\r
	434	copy the volume header into it.\r
	435	\r
	436	@param Fvb The FW_VOL_BLOCK_PROTOCOL instance from which to \r
	437	read the volume header \r
	438	@param FwVolHeader Pointer to pointer to allocated buffer in which \r
	439	the volume header is returned. \r
28a00297	440	\r
162ed594	441	@retval EFI_OUT_OF_RESOURCES No enough buffer could be allocated. \r
	442	@retval EFI_SUCCESS Successfully read volume header to the allocated \r
	443	buffer.\r
	444	\r
	445	**/\r
28a00297	446	EFI_STATUS\r
28a00297	447	GetFwVolHeader (\r
23c98c94	448	IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r
	449	OUT EFI_FIRMWARE_VOLUME_HEADER **FwVolHeader\r
	450	);\r
28a00297	451	\r
28a00297	452	\r
28a00297	453	\r
162ed594	454	/**\r
162ed594	455	Check if a FV is consistent and allocate cache\r
28a00297	456	\r
162ed594	457	@param FvDevice pointer to the FvDevice to be checked. \r
28a00297	458	\r
162ed594	459	@retval EFI_OUT_OF_RESOURCES No enough buffer could be allocated. \r
	460	@retval EFI_SUCCESS FV is consistent and cache is allocated. \r
	461	@retval EFI_VOLUME_CORRUPTED File system is corrupted.\r
28a00297	462	\r
162ed594	463	**/\r
28a00297	464	EFI_STATUS\r
	465	FvCheck (\r
	466	IN OUT FV_DEVICE *FvDevice\r
23c98c94	467	);\r
28a00297	468	\r
28a00297	469	#endif\r