2 This driver measures SMBIOS table to TPM.
4 Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
5 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
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.
17 #include <Protocol/Smbios.h>
18 #include <IndustryStandard/SmBios.h>
19 #include <IndustryStandard/UefiTcgPlatform.h>
20 #include <Guid/EventGroup.h>
21 #include <Guid/SmBios.h>
22 #include <Library/DebugLib.h>
23 #include <Library/UefiDriverEntryPoint.h>
24 #include <Library/UefiLib.h>
25 #include <Library/BaseLib.h>
26 #include <Library/BaseMemoryLib.h>
27 #include <Library/MemoryAllocationLib.h>
28 #include <Library/UefiBootServicesTableLib.h>
29 #include <Library/TpmMeasurementLib.h>
31 #define FIELD_SIZE_OF(TYPE, Field) ((UINTN)sizeof(((TYPE *)0)->Field))
38 } SMBIOS_FILTER_TABLE
;
39 #define SMBIOS_FILTER_TABLE_FLAG_IS_STRING BIT0
43 SMBIOS_FILTER_TABLE
*Filter
; // NULL means all fields
45 } SMBIOS_FILTER_STRUCT
;
48 // Platform Specific Policy
50 SMBIOS_FILTER_TABLE mSmbiosFilterType1BlackList
[] = {
51 {0x01, OFFSET_OF(SMBIOS_TABLE_TYPE1
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE1
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
52 {0x01, OFFSET_OF(SMBIOS_TABLE_TYPE1
, Uuid
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE1
, Uuid
), 0},
53 {0x01, OFFSET_OF(SMBIOS_TABLE_TYPE1
, WakeUpType
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE1
, WakeUpType
), 0},
55 SMBIOS_FILTER_TABLE mSmbiosFilterType2BlackList
[] = {
56 {0x02, OFFSET_OF(SMBIOS_TABLE_TYPE2
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE2
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
57 {0x02, OFFSET_OF(SMBIOS_TABLE_TYPE2
, LocationInChassis
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE2
, LocationInChassis
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
59 SMBIOS_FILTER_TABLE mSmbiosFilterType3BlackList
[] = {
60 {0x03, OFFSET_OF(SMBIOS_TABLE_TYPE3
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE3
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
61 {0x03, OFFSET_OF(SMBIOS_TABLE_TYPE3
, AssetTag
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE3
, AssetTag
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
63 SMBIOS_FILTER_TABLE mSmbiosFilterType4BlackList
[] = {
64 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
65 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, AssetTag
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, AssetTag
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
66 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, PartNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, PartNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
67 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, CoreCount
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, CoreCount
), 0},
68 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, EnabledCoreCount
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, EnabledCoreCount
), 0},
69 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, ThreadCount
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, ThreadCount
), 0},
70 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, CoreCount2
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, CoreCount2
), 0},
71 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, EnabledCoreCount2
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, EnabledCoreCount2
), 0},
72 {0x04, OFFSET_OF(SMBIOS_TABLE_TYPE4
, ThreadCount2
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE4
, ThreadCount2
), 0},
74 SMBIOS_FILTER_TABLE mSmbiosFilterType17BlackList
[] = {
75 {0x11, OFFSET_OF(SMBIOS_TABLE_TYPE17
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE17
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
76 {0x11, OFFSET_OF(SMBIOS_TABLE_TYPE17
, AssetTag
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE17
, AssetTag
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
77 {0x11, OFFSET_OF(SMBIOS_TABLE_TYPE17
, PartNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE17
, PartNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
79 SMBIOS_FILTER_TABLE mSmbiosFilterType22BlackList
[] = {
80 {0x16, OFFSET_OF(SMBIOS_TABLE_TYPE22
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE22
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
81 {0x16, OFFSET_OF(SMBIOS_TABLE_TYPE22
, SBDSSerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE22
, SBDSSerialNumber
), 0},
82 {0x16, OFFSET_OF(SMBIOS_TABLE_TYPE22
, SBDSManufactureDate
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE22
, SBDSManufactureDate
), 0},
84 SMBIOS_FILTER_TABLE mSmbiosFilterType23BlackList
[] = {
85 {0x17, OFFSET_OF(SMBIOS_TABLE_TYPE23
, ResetCount
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE23
, ResetCount
), 0},
87 SMBIOS_FILTER_TABLE mSmbiosFilterType27BlackList
[] = {
88 {0x1B, OFFSET_OF(SMBIOS_TABLE_TYPE27
, NominalSpeed
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE27
, NominalSpeed
), 0},
90 SMBIOS_FILTER_TABLE mSmbiosFilterType39BlackList
[] = {
91 {0x27, OFFSET_OF(SMBIOS_TABLE_TYPE39
, SerialNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE39
, SerialNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
92 {0x27, OFFSET_OF(SMBIOS_TABLE_TYPE39
, AssetTagNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE39
, AssetTagNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
93 {0x27, OFFSET_OF(SMBIOS_TABLE_TYPE39
, ModelPartNumber
), FIELD_SIZE_OF(SMBIOS_TABLE_TYPE39
, ModelPartNumber
), SMBIOS_FILTER_TABLE_FLAG_IS_STRING
},
96 SMBIOS_FILTER_STRUCT mSmbiosFilterStandardTableBlackList
[] = {
97 {0x01, mSmbiosFilterType1BlackList
, sizeof(mSmbiosFilterType1BlackList
)/sizeof(mSmbiosFilterType1BlackList
[0])},
98 {0x02, mSmbiosFilterType2BlackList
, sizeof(mSmbiosFilterType2BlackList
)/sizeof(mSmbiosFilterType2BlackList
[0])},
99 {0x03, mSmbiosFilterType3BlackList
, sizeof(mSmbiosFilterType3BlackList
)/sizeof(mSmbiosFilterType3BlackList
[0])},
100 {0x04, mSmbiosFilterType4BlackList
, sizeof(mSmbiosFilterType4BlackList
)/sizeof(mSmbiosFilterType4BlackList
[0])},
103 {0x11, mSmbiosFilterType17BlackList
, sizeof(mSmbiosFilterType17BlackList
)/sizeof(mSmbiosFilterType17BlackList
[0])},
105 {0x16, mSmbiosFilterType22BlackList
, sizeof(mSmbiosFilterType22BlackList
)/sizeof(mSmbiosFilterType22BlackList
[0])},
106 {0x17, mSmbiosFilterType23BlackList
, sizeof(mSmbiosFilterType23BlackList
)/sizeof(mSmbiosFilterType23BlackList
[0])},
107 {0x1B, mSmbiosFilterType27BlackList
, sizeof(mSmbiosFilterType27BlackList
)/sizeof(mSmbiosFilterType27BlackList
[0])},
110 {0x27, mSmbiosFilterType39BlackList
, sizeof(mSmbiosFilterType39BlackList
)/sizeof(mSmbiosFilterType39BlackList
[0])},
113 EFI_SMBIOS_PROTOCOL
*mSmbios
;
118 This function dump raw data.
121 @param Size raw data size
131 for (Index
= 0; Index
< Size
; Index
++) {
132 DEBUG ((EFI_D_VERBOSE
, "%02x", (UINTN
)Data
[Index
]));
138 This function dump raw data with colume format.
141 @param Size raw data size
154 #define COLUME_SIZE (16 * 2)
156 Count
= Size
/ COLUME_SIZE
;
157 Left
= Size
% COLUME_SIZE
;
158 for (Index
= 0; Index
< Count
; Index
++) {
159 DEBUG ((EFI_D_VERBOSE
, "%04x: ", Index
* COLUME_SIZE
));
160 InternalDumpData (Data
+ Index
* COLUME_SIZE
, COLUME_SIZE
);
161 DEBUG ((EFI_D_VERBOSE
, "\n"));
165 DEBUG ((EFI_D_VERBOSE
, "%04x: ", Index
* COLUME_SIZE
));
166 InternalDumpData (Data
+ Index
* COLUME_SIZE
, Left
);
167 DEBUG ((EFI_D_VERBOSE
, "\n"));
174 This function get filter structure by SMBIOS type.
176 @param Type SMBIOS type
179 SMBIOS_FILTER_STRUCT
*
180 GetFilterStructByType (
185 for (Index
= 0; Index
< sizeof(mSmbiosFilterStandardTableBlackList
)/sizeof(mSmbiosFilterStandardTableBlackList
[0]); Index
++) {
186 if (mSmbiosFilterStandardTableBlackList
[Index
].Type
== Type
) {
187 return &mSmbiosFilterStandardTableBlackList
[Index
];
195 This function get SMBIOS string in SMBIOS table.
197 @param Head SMBIOS table head
198 @param StringId SMBIOS string ID
199 @param StringLen length of SMBIOS string
201 @return SMBIOS string data
204 GetSmbiosStringById (
205 IN EFI_SMBIOS_TABLE_HEADER
*Head
,
206 IN SMBIOS_TABLE_STRING StringId
,
216 CharInStr
= (CHAR8
*)Head
+ Head
->Length
;
221 // look for the two consecutive zeros, check the string limit by the way.
224 while (*CharInStr
!= 0 || *(CharInStr
+1) != 0) {
225 if (*CharInStr
== 0) {
231 for (StrLen
= 0 ; StrLen
< mMaxLen
; StrLen
++) {
232 if (*(CharInStr
+StrLen
) == 0) {
238 if (StrLen
== mMaxLen
) {
243 // forward the pointer
248 if (StringsNumber
== StringId
) {
258 This function update SMBIOS table based on policy.
260 @param TableEntry SMBIOS table
261 @param TableEntrySize SMBIOS table size
266 IN OUT VOID
*TableEntry
,
267 IN UINTN TableEntrySize
270 SMBIOS_FILTER_STRUCT
*FilterStruct
;
271 SMBIOS_FILTER_TABLE
*Filter
;
273 SMBIOS_TABLE_STRING StringId
;
277 DEBUG ((EFI_D_INFO
, "Smbios Table (Type - %d):\n", ((SMBIOS_STRUCTURE
*)TableEntry
)->Type
));
278 DEBUG_CODE (InternalDumpHex (TableEntry
, TableEntrySize
););
280 FilterStruct
= GetFilterStructByType (((SMBIOS_STRUCTURE
*)TableEntry
)->Type
);
281 if (FilterStruct
!= NULL
) {
282 if (FilterStruct
->Filter
== NULL
|| FilterStruct
->FilterCount
== 0) {
283 // zero all table entries, except header
284 ZeroMem ((UINT8
*)TableEntry
+ sizeof(SMBIOS_STRUCTURE
), TableEntrySize
- sizeof(SMBIOS_STRUCTURE
));
286 Filter
= FilterStruct
->Filter
;
287 for (Index
= 0; Index
< FilterStruct
->FilterCount
; Index
++) {
288 if (((SMBIOS_STRUCTURE
*) TableEntry
)->Length
>= (Filter
[Index
].Offset
+ Filter
[Index
].Size
)) {
290 // The field is present in the SMBIOS entry.
292 if ((Filter
[Index
].Flags
& SMBIOS_FILTER_TABLE_FLAG_IS_STRING
) != 0) {
293 CopyMem (&StringId
, (UINT8
*)TableEntry
+ Filter
[Index
].Offset
, sizeof(StringId
));
295 // set ' ' for string field
296 String
= GetSmbiosStringById (TableEntry
, StringId
, &StringLen
);
297 ASSERT (String
!= NULL
);
298 //DEBUG ((EFI_D_INFO,"StrId(0x%x)-%a(%d)\n", StringId, String, StringLen));
299 SetMem (String
, StringLen
, ' ');
302 // zero non-string field
303 ZeroMem ((UINT8
*)TableEntry
+ Filter
[Index
].Offset
, Filter
[Index
].Size
);
309 DEBUG ((EFI_D_INFO
, "Filter Smbios Table (Type - %d):\n", ((SMBIOS_STRUCTURE
*)TableEntry
)->Type
));
310 DEBUG_CODE (InternalDumpHex (TableEntry
, TableEntrySize
););
315 Get the full size of SMBIOS structure including optional strings that follow the formatted structure.
317 @param Head Pointer to the beginning of SMBIOS structure.
318 @param NumberOfStrings The returned number of optional strings that follow the formatted structure.
320 @return Size The returned size.
323 GetSmbiosStructureSize (
324 IN EFI_SMBIOS_TABLE_HEADER
*Head
,
325 OUT UINTN
*NumberOfStrings
333 CharInStr
= (CHAR8
*)Head
+ Head
->Length
;
338 // look for the two consecutive zeros, check the string limit by the way.
340 while (*CharInStr
!= 0 || *(CharInStr
+1) != 0) {
341 if (*CharInStr
== 0) {
346 for (StrLen
= 0 ; StrLen
< mMaxLen
; StrLen
++) {
347 if (*(CharInStr
+StrLen
) == 0) {
352 if (StrLen
== mMaxLen
) {
357 // forward the pointer
365 // count ending two zeros.
369 if (NumberOfStrings
!= NULL
) {
370 *NumberOfStrings
= StringsNumber
;
377 This function returns full SMBIOS table length.
379 @param TableAddress SMBIOS table based address
380 @param TableMaximumSize Maximum size of SMBIOS table
382 @return SMBIOS table length
386 GetSmbiosTableLength (
387 IN VOID
*TableAddress
,
388 IN UINTN TableMaximumSize
392 VOID
*TableAddressEnd
;
393 UINTN TableEntryLength
;
395 TableAddressEnd
= (VOID
*)((UINTN
)TableAddress
+ TableMaximumSize
);
396 TableEntry
= TableAddress
;
397 while (TableEntry
< TableAddressEnd
) {
398 TableEntryLength
= GetSmbiosStructureSize (TableEntry
, NULL
);
399 if (TableEntryLength
== 0) {
402 if (((SMBIOS_STRUCTURE
*)TableEntry
)->Type
== 127) {
403 TableEntry
= (VOID
*)((UINTN
)TableEntry
+ TableEntryLength
);
406 TableEntry
= (VOID
*)((UINTN
)TableEntry
+ TableEntryLength
);
409 return ((UINTN
)TableEntry
- (UINTN
)TableAddress
);
414 This function updatess full SMBIOS table length.
416 @param TableAddress SMBIOS table based address
417 @param TableLength SMBIOS table length
422 IN OUT VOID
*TableAddress
,
426 VOID
*TableAddressEnd
;
428 UINTN TableEntryLength
;
430 TableEntry
= TableAddress
;
431 TableAddressEnd
= (VOID
*)((UINTN
)TableAddress
+ TableLength
);
432 while ((UINTN
)TableEntry
< (UINTN
)TableAddressEnd
) {
433 TableEntryLength
= GetSmbiosStructureSize (TableEntry
, NULL
);
434 if (TableEntryLength
== 0) {
438 FilterSmbiosEntry (TableEntry
, TableEntryLength
);
440 TableEntry
= (VOID
*)((UINTN
)TableEntry
+ TableEntryLength
);
445 Measure SMBIOS with EV_EFI_HANDOFF_TABLES to PCR[1].
447 @param[in] Event Event whose notification function is being invoked.
448 @param[in] Context Pointer to the notification function's context.
459 EFI_HANDOFF_TABLE_POINTERS HandoffTables
;
460 SMBIOS_TABLE_ENTRY_POINT
*SmbiosTable
;
461 SMBIOS_TABLE_3_0_ENTRY_POINT
*Smbios3Table
;
462 VOID
*SmbiosTableAddress
;
468 SmbiosTableAddress
= NULL
;
471 if (mSmbios
->MajorVersion
>= 3) {
472 Status
= EfiGetSystemConfigurationTable (
473 &gEfiSmbios3TableGuid
,
474 (VOID
**) &Smbios3Table
476 if (!EFI_ERROR (Status
)) {
477 DEBUG ((EFI_D_INFO
, "Smbios3Table:\n"));
478 DEBUG ((EFI_D_INFO
, " AnchorString - '%c%c%c%c%c'\n",
479 Smbios3Table
->AnchorString
[0],
480 Smbios3Table
->AnchorString
[1],
481 Smbios3Table
->AnchorString
[2],
482 Smbios3Table
->AnchorString
[3],
483 Smbios3Table
->AnchorString
[4]
485 DEBUG ((EFI_D_INFO
, " EntryPointStructureChecksum - 0x%02x\n", Smbios3Table
->EntryPointStructureChecksum
));
486 DEBUG ((EFI_D_INFO
, " EntryPointLength - 0x%02x\n", Smbios3Table
->EntryPointLength
));
487 DEBUG ((EFI_D_INFO
, " MajorVersion - 0x%02x\n", Smbios3Table
->MajorVersion
));
488 DEBUG ((EFI_D_INFO
, " MinorVersion - 0x%02x\n", Smbios3Table
->MinorVersion
));
489 DEBUG ((EFI_D_INFO
, " DocRev - 0x%02x\n", Smbios3Table
->DocRev
));
490 DEBUG ((EFI_D_INFO
, " EntryPointRevision - 0x%02x\n", Smbios3Table
->EntryPointRevision
));
491 DEBUG ((EFI_D_INFO
, " TableMaximumSize - 0x%08x\n", Smbios3Table
->TableMaximumSize
));
492 DEBUG ((EFI_D_INFO
, " TableAddress - 0x%016lx\n", Smbios3Table
->TableAddress
));
496 if (Smbios3Table
== NULL
) {
497 Status
= EfiGetSystemConfigurationTable (
498 &gEfiSmbiosTableGuid
,
499 (VOID
**) &SmbiosTable
501 if (!EFI_ERROR (Status
)) {
502 DEBUG ((EFI_D_INFO
, "SmbiosTable:\n"));
503 DEBUG ((EFI_D_INFO
, " AnchorString - '%c%c%c%c'\n",
504 SmbiosTable
->AnchorString
[0],
505 SmbiosTable
->AnchorString
[1],
506 SmbiosTable
->AnchorString
[2],
507 SmbiosTable
->AnchorString
[3]
509 DEBUG ((EFI_D_INFO
, " EntryPointStructureChecksum - 0x%02x\n", SmbiosTable
->EntryPointStructureChecksum
));
510 DEBUG ((EFI_D_INFO
, " EntryPointLength - 0x%02x\n", SmbiosTable
->EntryPointLength
));
511 DEBUG ((EFI_D_INFO
, " MajorVersion - 0x%02x\n", SmbiosTable
->MajorVersion
));
512 DEBUG ((EFI_D_INFO
, " MinorVersion - 0x%02x\n", SmbiosTable
->MinorVersion
));
513 DEBUG ((EFI_D_INFO
, " MaxStructureSize - 0x%08x\n", SmbiosTable
->MaxStructureSize
));
514 DEBUG ((EFI_D_INFO
, " EntryPointRevision - 0x%02x\n", SmbiosTable
->EntryPointRevision
));
515 DEBUG ((EFI_D_INFO
, " FormattedArea - '%c%c%c%c%c'\n",
516 SmbiosTable
->FormattedArea
[0],
517 SmbiosTable
->FormattedArea
[1],
518 SmbiosTable
->FormattedArea
[2],
519 SmbiosTable
->FormattedArea
[3],
520 SmbiosTable
->FormattedArea
[4]
522 DEBUG ((EFI_D_INFO
, " IntermediateAnchorString - '%c%c%c%c%c'\n",
523 SmbiosTable
->IntermediateAnchorString
[0],
524 SmbiosTable
->IntermediateAnchorString
[1],
525 SmbiosTable
->IntermediateAnchorString
[2],
526 SmbiosTable
->IntermediateAnchorString
[3],
527 SmbiosTable
->IntermediateAnchorString
[4]
529 DEBUG ((EFI_D_INFO
, " IntermediateChecksum - 0x%02x\n", SmbiosTable
->IntermediateChecksum
));
530 DEBUG ((EFI_D_INFO
, " TableLength - 0x%04x\n", SmbiosTable
->TableLength
));
531 DEBUG ((EFI_D_INFO
, " TableAddress - 0x%08x\n", SmbiosTable
->TableAddress
));
532 DEBUG ((EFI_D_INFO
, " NumberOfSmbiosStructures - 0x%04x\n", SmbiosTable
->NumberOfSmbiosStructures
));
533 DEBUG ((EFI_D_INFO
, " SmbiosBcdRevision - 0x%02x\n", SmbiosTable
->SmbiosBcdRevision
));
537 if (Smbios3Table
!= NULL
) {
538 SmbiosTableAddress
= (VOID
*)(UINTN
)Smbios3Table
->TableAddress
;
539 TableLength
= GetSmbiosTableLength (SmbiosTableAddress
, Smbios3Table
->TableMaximumSize
);
540 } else if (SmbiosTable
!= NULL
) {
541 SmbiosTableAddress
= (VOID
*)(UINTN
)SmbiosTable
->TableAddress
;
542 TableLength
= SmbiosTable
->TableLength
;
545 if (SmbiosTableAddress
!= NULL
) {
546 DEBUG ((DEBUG_INFO
, "The Smbios Table starts at: 0x%x\n", SmbiosTableAddress
));
547 DEBUG ((DEBUG_INFO
, "The Smbios Table size: 0x%x\n", TableLength
));
548 DEBUG_CODE (InternalDumpHex ((UINT8
*)(UINTN
)SmbiosTableAddress
, TableLength
););
550 TableAddress
= AllocateCopyPool ((UINTN
)TableLength
, (VOID
*)(UINTN
)SmbiosTableAddress
);
551 if (TableAddress
== NULL
) {
555 FilterSmbiosTable (TableAddress
, TableLength
);
557 DEBUG ((DEBUG_INFO
, "The final Smbios Table starts at: 0x%x\n", TableAddress
));
558 DEBUG ((DEBUG_INFO
, "The final Smbios Table size: 0x%x\n", TableLength
));
559 DEBUG_CODE (InternalDumpHex (TableAddress
, TableLength
););
561 HandoffTables
.NumberOfTables
= 1;
562 if (Smbios3Table
!= NULL
) {
563 CopyGuid (&(HandoffTables
.TableEntry
[0].VendorGuid
), &gEfiSmbios3TableGuid
);
564 HandoffTables
.TableEntry
[0].VendorTable
= Smbios3Table
;
566 CopyGuid (&(HandoffTables
.TableEntry
[0].VendorGuid
), &gEfiSmbiosTableGuid
);
567 HandoffTables
.TableEntry
[0].VendorTable
= SmbiosTable
;
569 Status
= TpmMeasureAndLogData (
571 EV_EFI_HANDOFF_TABLES
, // EventType
572 &HandoffTables
, // EventLog
573 sizeof (HandoffTables
), // LogLen
574 TableAddress
, // HashData
575 TableLength
// HashDataLen
577 if (EFI_ERROR (Status
)) {
587 Driver to produce Smbios measurement.
589 @param ImageHandle Module's image handle
590 @param SystemTable Pointer of EFI_SYSTEM_TABLE
592 @return Status returned from EfiCreateEventReadyToBootEx().
597 SmbiosMeasurementDriverEntryPoint (
598 IN EFI_HANDLE ImageHandle
,
599 IN EFI_SYSTEM_TABLE
*SystemTable
605 Status
= gBS
->LocateProtocol (&gEfiSmbiosProtocolGuid
, NULL
, (VOID
**) &mSmbios
);
606 ASSERT_EFI_ERROR (Status
);
607 DEBUG ((DEBUG_INFO
, "The Smbios Table Version: %x.%x\n", mSmbios
->MajorVersion
, mSmbios
->MinorVersion
));
609 if (mSmbios
->MajorVersion
< 2 || (mSmbios
->MajorVersion
== 2 && mSmbios
->MinorVersion
< 7)){
610 mMaxLen
= SMBIOS_STRING_MAX_LENGTH
;
611 } else if (mSmbios
->MajorVersion
< 3) {
613 // Reference SMBIOS 2.7, chapter 6.1.3, it will have no limit on the length of each individual text string.
614 // However, the length of the entire structure table (including all strings) must be reported
615 // in the Structure Table Length field of the SMBIOS Structure Table Entry Point,
616 // which is a WORD field limited to 65,535 bytes.
618 mMaxLen
= SMBIOS_TABLE_MAX_LENGTH
;
621 // SMBIOS 3.0 defines the Structure table maximum size as DWORD field limited to 0xFFFFFFFF bytes.
622 // Locate the end of string as long as possible.
624 mMaxLen
= SMBIOS_3_0_TABLE_MAX_LENGTH
;
628 // Measure Smbios tables
630 Status
= EfiCreateEventReadyToBootEx (