[mirror_edk2.git] / EdkNt32Pkg / Sec / FwVol.c

/*++\r
\r
Copyright (c) 2006, Intel Corporation                                                         \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
Module Name:\r
  FwVol.c\r
\r
Abstract:\r
  A simple FV stack so the SEC can extract the SEC Core from an\r
  FV.\r
\r
--*/\r
\r
#include "SecMain.h"\r
\r
#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \\r
  (ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1))\r
\r
EFI_FFS_FILE_STATE\r
GetFileState (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  )\r
/*++\r
\r
Routine Description:\r
  Returns the highest bit set of the State field\r
\r
Arguments:\r
  ErasePolarity   - Erase Polarity  as defined by EFI_FVB_ERASE_POLARITY\r
                    in the Attributes field.\r
  FfsHeader       - Pointer to FFS File Header.\r
\r
Returns:\r
  Returns the highest bit in the State field\r
\r
--*/\r
{\r
  EFI_FFS_FILE_STATE  FileState;\r
  EFI_FFS_FILE_STATE  HighestBit;\r
\r
  FileState = FfsHeader->State;\r
\r
  if (ErasePolarity != 0) {\r
    FileState = (EFI_FFS_FILE_STATE)~FileState;\r
  }\r
\r
  HighestBit = 0x80;\r
  while (HighestBit != 0 && (HighestBit & FileState) == 0) {\r
    HighestBit >>= 1;\r
  }\r
\r
  return HighestBit;\r
}\r
\r
UINT8\r
CalculateHeaderChecksum (\r
  IN EFI_FFS_FILE_HEADER  *FileHeader\r
  )\r
/*++\r
\r
Routine Description:\r
  Calculates the checksum of the header of a file.\r
\r
Arguments:\r
  FileHeader       - Pointer to FFS File Header.\r
\r
Returns:\r
  Checksum of the header.\r
  \r
--*/\r
{\r
  UINT8 *ptr;\r
  UINTN Index;\r
  UINT8 Sum;\r
\r
  Sum = 0;\r
  ptr = (UINT8 *) FileHeader;\r
\r
  for (Index = 0; Index < sizeof (EFI_FFS_FILE_HEADER) - 3; Index += 4) {\r
    Sum = (UINT8) (Sum + ptr[Index]);\r
    Sum = (UINT8) (Sum + ptr[Index + 1]);\r
    Sum = (UINT8) (Sum + ptr[Index + 2]);\r
    Sum = (UINT8) (Sum + ptr[Index + 3]);\r
  }\r
\r
  for (; Index < sizeof (EFI_FFS_FILE_HEADER); Index++) {\r
    Sum = (UINT8) (Sum + ptr[Index]);\r
  }\r
  //\r
  // State field (since this indicates the different state of file).\r
  //\r
  Sum = (UINT8) (Sum - FileHeader->State);\r
  //\r
  // Checksum field of the file is not part of the header checksum.\r
  //\r
  Sum = (UINT8) (Sum - FileHeader->IntegrityCheck.Checksum.File);\r
\r
  return Sum;\r
}\r
\r
EFI_STATUS\r
SecFfsFindNextFile (\r
  IN EFI_FV_FILETYPE             SearchType,\r
  IN EFI_FIRMWARE_VOLUME_HEADER  *FwVolHeader,\r
  IN OUT EFI_FFS_FILE_HEADER     **FileHeader\r
  )\r
/*++\r
\r
Routine Description:\r
    Given the input file pointer, search for the next matching file in the\r
    FFS volume as defined by SearchType. The search starts from FileHeader inside\r
    the Firmware Volume defined by FwVolHeader.\r
\r
Arguments:\r
    SearchType - Filter to find only files of this type.\r
                 Type EFI_FV_FILETYPE_ALL causes no filtering to be done.\r
    FwVolHeader - Pointer to the FV header of the volume to search.\r
                  This parameter must point to a valid FFS volume.\r
    FileHeader  - Pointer to the current file from which to begin searching.\r
                  This pointer will be updated upon return to reflect the file\r
                  found.\r
\r
Returns:\r
    EFI_NOT_FOUND - No files matching the search criteria were found\r
    EFI_SUCCESS\r
\r
--*/\r
{\r
  EFI_FFS_FILE_HEADER *FfsFileHeader;\r
  UINT32              FileLength;\r
  UINT32              FileOccupiedSize;\r
  UINT32              FileOffset;\r
  UINT64              FvLength;\r
  UINT8               ErasePolarity;\r
  UINT8               FileState;\r
\r
  FvLength = FwVolHeader->FvLength;\r
  if (FwVolHeader->Attributes & EFI_FVB_ERASE_POLARITY) {\r
    ErasePolarity = 1;\r
  } else {\r
    ErasePolarity = 0;\r
  }\r
  //\r
  // If FileHeader is not specified (NULL) start with the first file in the\r
  // firmware volume.  Otherwise, start from the FileHeader.\r
  //\r
  if (*FileHeader == NULL) {\r
    FfsFileHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FwVolHeader + FwVolHeader->HeaderLength);\r
  } else {\r
    //\r
    // Length is 24 bits wide so mask upper 8 bits\r
    // FileLength is adjusted to FileOccupiedSize as it is 8 byte aligned.\r
    //\r
    FileLength        = *(UINT32 *) (*FileHeader)->Size & 0x00FFFFFF;\r
    FileOccupiedSize  = GET_OCCUPIED_SIZE (FileLength, 8);\r
    FfsFileHeader     = (EFI_FFS_FILE_HEADER *) ((UINT8 *) *FileHeader + FileOccupiedSize);\r
  }\r
\r
  FileOffset = (UINT32) ((UINT8 *) FfsFileHeader - (UINT8 *) FwVolHeader);\r
\r
  while (FileOffset < (FvLength - sizeof (EFI_FFS_FILE_HEADER))) {\r
    //\r
    // Get FileState which is the highest bit of the State\r
    //\r
    FileState = GetFileState (ErasePolarity, FfsFileHeader);\r
\r
    switch (FileState) {\r
\r
    case EFI_FILE_HEADER_INVALID:\r
      FileOffset += sizeof (EFI_FFS_FILE_HEADER);\r
      FfsFileHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FfsFileHeader + sizeof (EFI_FFS_FILE_HEADER));\r
      break;\r
\r
    case EFI_FILE_DATA_VALID:\r
    case EFI_FILE_MARKED_FOR_UPDATE:\r
      if (CalculateHeaderChecksum (FfsFileHeader) == 0) {\r
        FileLength        = *(UINT32 *) (FfsFileHeader->Size) & 0x00FFFFFF;\r
        FileOccupiedSize  = GET_OCCUPIED_SIZE (FileLength, 8);\r
\r
        if ((SearchType == FfsFileHeader->Type) || (SearchType == EFI_FV_FILETYPE_ALL)) {\r
\r
          *FileHeader = FfsFileHeader;\r
\r
          return EFI_SUCCESS;\r
        }\r
\r
        FileOffset += FileOccupiedSize;\r
        FfsFileHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FfsFileHeader + FileOccupiedSize);\r
      } else {\r
        return EFI_NOT_FOUND;\r
      }\r
      break;\r
\r
    case EFI_FILE_DELETED:\r
      FileLength        = *(UINT32 *) (FfsFileHeader->Size) & 0x00FFFFFF;\r
      FileOccupiedSize  = GET_OCCUPIED_SIZE (FileLength, 8);\r
      FileOffset += FileOccupiedSize;\r
      FfsFileHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FfsFileHeader + FileOccupiedSize);\r
      break;\r
\r
    default:\r
      return EFI_NOT_FOUND;\r
\r
    }\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r
\r
EFI_STATUS\r
SecFfsFindSectionData (\r
  IN EFI_SECTION_TYPE      SectionType,\r
  IN EFI_FFS_FILE_HEADER   *FfsFileHeader,\r
  IN OUT VOID              **SectionData\r
  )\r
/*++\r
\r
Routine Description:\r
    Given the input file pointer, search for the next matching section in the\r
    FFS volume.\r
\r
Arguments:\r
    SearchType    - Filter to find only sections of this type.\r
    FfsFileHeader - Pointer to the current file to search.\r
    SectionData   - Pointer to the Section matching SectionType in FfsFileHeader.\r
                     NULL if section not found\r
\r
Returns:\r
    EFI_NOT_FOUND - No files matching the search criteria were found\r
    EFI_SUCCESS\r
\r
--*/\r
{\r
  UINT32                    FileSize;\r
  EFI_COMMON_SECTION_HEADER *Section;\r
  UINT32                    SectionLength;\r
  UINT32                    ParsedLength;\r
\r
  //\r
  // Size is 24 bits wide so mask upper 8 bits.\r
  //    Does not include FfsFileHeader header size\r
  // FileSize is adjusted to FileOccupiedSize as it is 8 byte aligned.\r
  //\r
  Section   = (EFI_COMMON_SECTION_HEADER *) (FfsFileHeader + 1);\r
  FileSize  = *(UINT32 *) (FfsFileHeader->Size) & 0x00FFFFFF;\r
  FileSize -= sizeof (EFI_FFS_FILE_HEADER);\r
\r
  *SectionData  = NULL;\r
  ParsedLength  = 0;\r
  while (ParsedLength < FileSize) {\r
    if (Section->Type == SectionType) {\r
      *SectionData = (VOID *) (Section + 1);\r
      return EFI_SUCCESS;\r
    }\r
    //\r
    // Size is 24 bits wide so mask upper 8 bits.\r
    // SectionLength is adjusted it is 4 byte aligned.\r
    // Go to the next section\r
    //\r
    SectionLength = *(UINT32 *) Section->Size & 0x00FFFFFF;\r
    SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);\r
\r
    ParsedLength += SectionLength;\r
    Section = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) Section + SectionLength);\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r
\r
EFI_STATUS\r
SecFfsFindPeiCore (\r
  IN  EFI_FIRMWARE_VOLUME_HEADER  *FwVolHeader,\r
  OUT VOID                        **Pe32Data\r
  )\r
/*++\r
\r
Routine Description:\r
  Given the pointer to the Firmware Volume Header find the SEC\r
  core and return it's PE32 image.\r
\r
Arguments:\r
  FwVolHeader - Pointer to memory mapped FV\r
  Pe32Data - Pointer to SEC PE32 iamge.\r
 \r
Returns:  \r
  EFI_SUCCESS - Pe32Data is valid\r
  other       - Failure\r
\r
--*/\r
{\r
  EFI_STATUS          Status;\r
  EFI_FFS_FILE_HEADER *FileHeader;\r
  EFI_FV_FILETYPE     SearchType;\r
\r
  SearchType  = EFI_FV_FILETYPE_PEI_CORE;\r
  FileHeader  = NULL;\r
  do {\r
    Status = SecFfsFindNextFile (SearchType, FwVolHeader, &FileHeader);\r
    if (!EFI_ERROR (Status)) {\r
      Status = SecFfsFindSectionData (EFI_SECTION_PE32, FileHeader, Pe32Data);\r
      return Status;\r
    }\r
  } while (!EFI_ERROR (Status));\r
\r
  return Status;\r
}\r
Commit	Line	Data
878ddf1f	1	/*++\r
	2	\r
	3	Copyright (c) 2006, Intel Corporation \r
	4	All rights reserved. This program and the accompanying materials \r
	5	are licensed and made available under the terms and conditions of the BSD License \r
	6	which accompanies this distribution. The full text of the license may be found at \r
	7	http://opensource.org/licenses/bsd-license.php \r
	8	\r
	9	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	10	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	11	\r
	12	Module Name:\r
	13	FwVol.c\r
	14	\r
	15	Abstract:\r
	16	A simple FV stack so the SEC can extract the SEC Core from an\r
	17	FV.\r
	18	\r
	19	--*/\r
	20	\r
	21	#include "SecMain.h"\r
	22	\r
	23	#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \\r
	24	(ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1))\r
	25	\r
	26	EFI_FFS_FILE_STATE\r
	27	GetFileState (\r
	28	IN UINT8 ErasePolarity,\r
	29	IN EFI_FFS_FILE_HEADER *FfsHeader\r
	30	)\r
	31	/*++\r
	32	\r
	33	Routine Description:\r
	34	Returns the highest bit set of the State field\r
	35	\r
	36	Arguments:\r
	37	ErasePolarity - Erase Polarity as defined by EFI_FVB_ERASE_POLARITY\r
	38	in the Attributes field.\r
	39	FfsHeader - Pointer to FFS File Header.\r
	40	\r
	41	Returns:\r
	42	Returns the highest bit in the State field\r
	43	\r
	44	--*/\r
	45	{\r
	46	EFI_FFS_FILE_STATE FileState;\r
	47	EFI_FFS_FILE_STATE HighestBit;\r
	48	\r
	49	FileState = FfsHeader->State;\r
	50	\r
	51	if (ErasePolarity != 0) {\r
	52	FileState = (EFI_FFS_FILE_STATE)~FileState;\r
	53	}\r
	54	\r
	55	HighestBit = 0x80;\r
	56	while (HighestBit != 0 && (HighestBit & FileState) == 0) {\r
	57	HighestBit >>= 1;\r
	58	}\r
	59	\r
	60	return HighestBit;\r
	61	}\r
	62	\r
	63	UINT8\r
	64	CalculateHeaderChecksum (\r
65	IN EFI_FFS_FILE_HEADER *FileHeader\r
66	)\r
67	/*++\r
68	\r
69	Routine Description:\r
70	Calculates the checksum of the header of a file.\r
71	\r
72	Arguments:\r
73	FileHeader - Pointer to FFS File Header.\r
74	\r
75	Returns:\r
76	Checksum of the header.\r
77	\r
78	--*/\r
79	{\r
80	UINT8 *ptr;\r
81	UINTN Index;\r
82	UINT8 Sum;\r
83	\r
84	Sum = 0;\r
85	ptr = (UINT8 *) FileHeader;\r
86	\r
87	for (Index = 0; Index < sizeof (EFI_FFS_FILE_HEADER) - 3; Index += 4) {\r
88	Sum = (UINT8) (Sum + ptr[Index]);\r
89	Sum = (UINT8) (Sum + ptr[Index + 1]);\r
90	Sum = (UINT8) (Sum + ptr[Index + 2]);\r
91	Sum = (UINT8) (Sum + ptr[Index + 3]);\r
92	}\r
93	\r
94	for (; Index < sizeof (EFI_FFS_FILE_HEADER); Index++) {\r
95	Sum = (UINT8) (Sum + ptr[Index]);\r
96	}\r
97	//\r
98	// State field (since this indicates the different state of file).\r
99	//\r
100	Sum = (UINT8) (Sum - FileHeader->State);\r
101	//\r
102	// Checksum field of the file is not part of the header checksum.\r
103	//\r
104	Sum = (UINT8) (Sum - FileHeader->IntegrityCheck.Checksum.File);\r
105	\r
106	return Sum;\r
107	}\r
108	\r
109	EFI_STATUS\r
110	SecFfsFindNextFile (\r
111	IN EFI_FV_FILETYPE SearchType,\r
112	IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader,\r
113	IN OUT EFI_FFS_FILE_HEADER **FileHeader\r
114	)\r
115	/*++\r
116	\r
117	Routine Description:\r
118	Given the input file pointer, search for the next matching file in the\r
119	FFS volume as defined by SearchType. The search starts from FileHeader inside\r
120	the Firmware Volume defined by FwVolHeader.\r
121	\r
122	Arguments:\r
123	SearchType - Filter to find only files of this type.\r
124	Type EFI_FV_FILETYPE_ALL causes no filtering to be done.\r
125	FwVolHeader - Pointer to the FV header of the volume to search.\r
126	This parameter must point to a valid FFS volume.\r
127	FileHeader - Pointer to the current file from which to begin searching.\r
128	This pointer will be updated upon return to reflect the file\r
129	found.\r
130	\r
131	Returns:\r
132	EFI_NOT_FOUND - No files matching the search criteria were found\r
133	EFI_SUCCESS\r
134	\r
135	--*/\r
136	{\r
137	EFI_FFS_FILE_HEADER *FfsFileHeader;\r
138	UINT32 FileLength;\r
139	UINT32 FileOccupiedSize;\r
140	UINT32 FileOffset;\r
141	UINT64 FvLength;\r
142	UINT8 ErasePolarity;\r
143	UINT8 FileState;\r
144	\r
145	FvLength = FwVolHeader->FvLength;\r
146	if (FwVolHeader->Attributes & EFI_FVB_ERASE_POLARITY) {\r
147	ErasePolarity = 1;\r
148	} else {\r
149	ErasePolarity = 0;\r
150	}\r
151	//\r
152	// If FileHeader is not specified (NULL) start with the first file in the\r
153	// firmware volume. Otherwise, start from the FileHeader.\r
154	//\r
155	if (*FileHeader == NULL) {\r
156	FfsFileHeader = (EFI_FFS_FILE_HEADER ) ((UINT8 ) FwVolHeader + FwVolHeader->HeaderLength);\r
157	} else {\r
158	//\r
159	// Length is 24 bits wide so mask upper 8 bits\r
160	// FileLength is adjusted to FileOccupiedSize as it is 8 byte aligned.\r
161	//\r
162	FileLength = (UINT32 ) (*FileHeader)->Size & 0x00FFFFFF;\r
163	FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);\r
164	FfsFileHeader = (EFI_FFS_FILE_HEADER ) ((UINT8 ) *FileHeader + FileOccupiedSize);\r
165	}\r
166	\r
167	FileOffset = (UINT32) ((UINT8 ) FfsFileHeader - (UINT8 ) FwVolHeader);\r
168	\r
169	while (FileOffset < (FvLength - sizeof (EFI_FFS_FILE_HEADER))) {\r
170	//\r
171	// Get FileState which is the highest bit of the State\r
172	//\r
173	FileState = GetFileState (ErasePolarity, FfsFileHeader);\r
174	\r
175	switch (FileState) {\r
176	\r
177	case EFI_FILE_HEADER_INVALID:\r
178	FileOffset += sizeof (EFI_FFS_FILE_HEADER);\r
179	FfsFileHeader = (EFI_FFS_FILE_HEADER ) ((UINT8 ) FfsFileHeader + sizeof (EFI_FFS_FILE_HEADER));\r
180	break;\r
181	\r
182	case EFI_FILE_DATA_VALID:\r
183	case EFI_FILE_MARKED_FOR_UPDATE:\r
184	if (CalculateHeaderChecksum (FfsFileHeader) == 0) {\r
185	FileLength = (UINT32 ) (FfsFileHeader->Size) & 0x00FFFFFF;\r
186	FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);\r
187	\r
188	if ((SearchType == FfsFileHeader->Type) \|\| (SearchType == EFI_FV_FILETYPE_ALL)) {\r
189	\r
190	*FileHeader = FfsFileHeader;\r
191	\r
192	return EFI_SUCCESS;\r
193	}\r
194	\r
195	FileOffset += FileOccupiedSize;\r
196	FfsFileHeader = (EFI_FFS_FILE_HEADER ) ((UINT8 ) FfsFileHeader + FileOccupiedSize);\r
197	} else {\r
198	return EFI_NOT_FOUND;\r
199	}\r
200	break;\r
201	\r
202	case EFI_FILE_DELETED:\r
203	FileLength = (UINT32 ) (FfsFileHeader->Size) & 0x00FFFFFF;\r
204	FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);\r
205	FileOffset += FileOccupiedSize;\r
206	FfsFileHeader = (EFI_FFS_FILE_HEADER ) ((UINT8 ) FfsFileHeader + FileOccupiedSize);\r
207	break;\r
208	\r
209	default:\r
210	return EFI_NOT_FOUND;\r
211	\r
212	}\r
213	}\r
214	\r
215	return EFI_NOT_FOUND;\r
216	}\r
217	\r
218	EFI_STATUS\r
219	SecFfsFindSectionData (\r
220	IN EFI_SECTION_TYPE SectionType,\r
221	IN EFI_FFS_FILE_HEADER *FfsFileHeader,\r
222	IN OUT VOID **SectionData\r
223	)\r
224	/*++\r
225	\r
226	Routine Description:\r
227	Given the input file pointer, search for the next matching section in the\r
228	FFS volume.\r
229	\r
230	Arguments:\r
231	SearchType - Filter to find only sections of this type.\r
232	FfsFileHeader - Pointer to the current file to search.\r
233	SectionData - Pointer to the Section matching SectionType in FfsFileHeader.\r
234	NULL if section not found\r
235	\r
236	Returns:\r
237	EFI_NOT_FOUND - No files matching the search criteria were found\r
238	EFI_SUCCESS\r
239	\r
240	--*/\r
241	{\r
242	UINT32 FileSize;\r
243	EFI_COMMON_SECTION_HEADER *Section;\r
244	UINT32 SectionLength;\r
245	UINT32 ParsedLength;\r
246	\r
247	//\r
248	// Size is 24 bits wide so mask upper 8 bits.\r
249	// Does not include FfsFileHeader header size\r
250	// FileSize is adjusted to FileOccupiedSize as it is 8 byte aligned.\r
251	//\r
252	Section = (EFI_COMMON_SECTION_HEADER *) (FfsFileHeader + 1);\r
253	FileSize = (UINT32 ) (FfsFileHeader->Size) & 0x00FFFFFF;\r
254	FileSize -= sizeof (EFI_FFS_FILE_HEADER);\r
255	\r
256	*SectionData = NULL;\r
257	ParsedLength = 0;\r
258	while (ParsedLength < FileSize) {\r
259	if (Section->Type == SectionType) {\r
260	SectionData = (VOID ) (Section + 1);\r
261	return EFI_SUCCESS;\r
262	}\r
263	//\r
264	// Size is 24 bits wide so mask upper 8 bits.\r
265	// SectionLength is adjusted it is 4 byte aligned.\r
266	// Go to the next section\r
267	//\r
268	SectionLength = (UINT32 ) Section->Size & 0x00FFFFFF;\r
269	SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);\r
270	\r
271	ParsedLength += SectionLength;\r
272	Section = (EFI_COMMON_SECTION_HEADER ) ((UINT8 ) Section + SectionLength);\r
273	}\r
274	\r
275	return EFI_NOT_FOUND;\r
276	}\r
277	\r
278	EFI_STATUS\r
279	SecFfsFindPeiCore (\r
280	IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader,\r
281	OUT VOID **Pe32Data\r
282	)\r
283	/*++\r
284	\r
285	Routine Description:\r
286	Given the pointer to the Firmware Volume Header find the SEC\r
287	core and return it's PE32 image.\r
288	\r
289	Arguments:\r
290	FwVolHeader - Pointer to memory mapped FV\r
291	Pe32Data - Pointer to SEC PE32 iamge.\r
292	\r
293	Returns: \r
294	EFI_SUCCESS - Pe32Data is valid\r
295	other - Failure\r
296	\r
297	--*/\r
298	{\r
299	EFI_STATUS Status;\r
300	EFI_FFS_FILE_HEADER *FileHeader;\r
301	EFI_FV_FILETYPE SearchType;\r
302	\r
303	SearchType = EFI_FV_FILETYPE_PEI_CORE;\r
304	FileHeader = NULL;\r
305	do {\r
306	Status = SecFfsFindNextFile (SearchType, FwVolHeader, &FileHeader);\r
307	if (!EFI_ERROR (Status)) {\r
308	Status = SecFfsFindSectionData (EFI_SECTION_PE32, FileHeader, Pe32Data);\r
309	return Status;\r
310	}\r
311	} while (!EFI_ERROR (Status));\r
312	\r
313	return Status;\r
314	}\r