1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
|
/** @file
SMI handler profile support.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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.
**/
#include <PiSmm.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/DxeServicesLib.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SmmAccess2.h>
#include <Protocol/SmmReadyToLock.h>
#include <Protocol/SmmEndOfDxe.h>
#include <Guid/SmiHandlerProfile.h>
#include "PiSmmCore.h"
typedef struct {
EFI_GUID FileGuid;
UINTN ImageRef;
UINTN EntryPoint;
UINTN ImageBase;
UINTN ImageSize;
UINTN PdbStringSize;
CHAR8 *PdbString;
} IMAGE_STRUCT;
/**
Register SMI handler profile handler.
**/
VOID
RegisterSmiHandlerProfileHandler(
VOID
);
/**
Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded
into system memory with the PE/COFF Loader Library functions.
Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry
point in EntryPoint. If the entry point could not be retrieved from the PE/COFF image, then
return RETURN_INVALID_PARAMETER. Otherwise return RETURN_SUCCESS.
If Pe32Data is NULL, then ASSERT().
If EntryPoint is NULL, then ASSERT().
@param Pe32Data The pointer to the PE/COFF image that is loaded in system memory.
@param EntryPoint The pointer to entry point to the PE/COFF image to return.
@retval RETURN_SUCCESS EntryPoint was returned.
@retval RETURN_INVALID_PARAMETER The entry point could not be found in the PE/COFF image.
**/
RETURN_STATUS
InternalPeCoffGetEntryPoint (
IN VOID *Pe32Data,
OUT VOID **EntryPoint
);
extern LIST_ENTRY mSmiEntryList;
extern LIST_ENTRY mHardwareSmiEntryList;
extern SMI_ENTRY mRootSmiEntry;
extern SMI_HANDLER_PROFILE_PROTOCOL mSmiHandlerProfile;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY mHardwareSmiEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mHardwareSmiEntryList);
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY mRootSmiEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mRootSmiEntryList);
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreRootSmiEntryList = &mRootSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreSmiEntryList = &mSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreHardwareSmiEntryList = &mHardwareSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED IMAGE_STRUCT *mImageStruct;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mImageStructCountMax;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mImageStructCount;
GLOBAL_REMOVE_IF_UNREFERENCED VOID *mSmiHandlerProfileDatabase;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmiHandlerProfileDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmImageDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmRootSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmHardwareSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN mSmiHandlerProfileRecordingStatus;
GLOBAL_REMOVE_IF_UNREFERENCED SMI_HANDLER_PROFILE_PROTOCOL mSmiHandlerProfile = {
SmiHandlerProfileRegisterHandler,
SmiHandlerProfileUnregisterHandler,
};
/**
This function dump raw data.
@param Data raw data
@param Size raw data size
**/
VOID
InternalDumpData (
IN UINT8 *Data,
IN UINTN Size
)
{
UINTN Index;
for (Index = 0; Index < Size; Index++) {
DEBUG ((DEBUG_INFO, "%02x ", (UINTN)Data[Index]));
}
}
/**
Get GUID name for an image.
@param[in] LoadedImage LoadedImage protocol.
@param[out] Guid Guid of the FFS
**/
VOID
GetDriverGuid (
IN EFI_LOADED_IMAGE_PROTOCOL *LoadedImage,
OUT EFI_GUID *Guid
)
{
EFI_GUID *FileName;
FileName = NULL;
if ((DevicePathType(LoadedImage->FilePath) == MEDIA_DEVICE_PATH) &&
(DevicePathSubType(LoadedImage->FilePath) == MEDIA_PIWG_FW_FILE_DP)) {
FileName = &((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)LoadedImage->FilePath)->FvFileName;
}
if (FileName != NULL) {
CopyGuid(Guid, FileName);
} else {
ZeroMem(Guid, sizeof(EFI_GUID));
}
}
/**
Add image structure.
@param ImageBase image base
@param ImageSize image size
@param EntryPoint image entry point
@param Guid FFS GUID of the image
@param PdbString image PDB string
**/
VOID
AddImageStruct(
IN UINTN ImageBase,
IN UINTN ImageSize,
IN UINTN EntryPoint,
IN EFI_GUID *Guid,
IN CHAR8 *PdbString
)
{
UINTN PdbStringSize;
if (mImageStructCount >= mImageStructCountMax) {
ASSERT(FALSE);
return;
}
CopyGuid(&mImageStruct[mImageStructCount].FileGuid, Guid);
mImageStruct[mImageStructCount].ImageRef = mImageStructCount;
mImageStruct[mImageStructCount].ImageBase = ImageBase;
mImageStruct[mImageStructCount].ImageSize = ImageSize;
mImageStruct[mImageStructCount].EntryPoint = EntryPoint;
if (PdbString != NULL) {
PdbStringSize = AsciiStrSize(PdbString);
mImageStruct[mImageStructCount].PdbString = AllocateCopyPool (PdbStringSize, PdbString);
if (mImageStruct[mImageStructCount].PdbString != NULL) {
mImageStruct[mImageStructCount].PdbStringSize = PdbStringSize;
}
}
mImageStructCount++;
}
/**
return an image structure based upon image address.
@param Address image address
@return image structure
**/
IMAGE_STRUCT *
AddressToImageStruct(
IN UINTN Address
)
{
UINTN Index;
for (Index = 0; Index < mImageStructCount; Index++) {
if ((Address >= mImageStruct[Index].ImageBase) &&
(Address < mImageStruct[Index].ImageBase + mImageStruct[Index].ImageSize)) {
return &mImageStruct[Index];
}
}
return NULL;
}
/**
return an image reference index based upon image address.
@param Address image address
@return image reference index
**/
UINTN
AddressToImageRef(
IN UINTN Address
)
{
IMAGE_STRUCT *ImageStruct;
ImageStruct = AddressToImageStruct(Address);
if (ImageStruct != NULL) {
return ImageStruct->ImageRef;
}
return (UINTN)-1;
}
/**
Collect SMM image information based upon loaded image protocol.
**/
VOID
GetSmmLoadedImage(
VOID
)
{
EFI_STATUS Status;
UINTN NoHandles;
UINTN HandleBufferSize;
EFI_HANDLE *HandleBuffer;
UINTN Index;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
CHAR16 *PathStr;
EFI_SMM_DRIVER_ENTRY *LoadedImagePrivate;
UINTN EntryPoint;
VOID *EntryPointInImage;
EFI_GUID Guid;
CHAR8 *PdbString;
UINTN RealImageBase;
HandleBufferSize = 0;
HandleBuffer = NULL;
Status = gSmst->SmmLocateHandle(
ByProtocol,
&gEfiLoadedImageProtocolGuid,
NULL,
&HandleBufferSize,
HandleBuffer
);
if (Status != EFI_BUFFER_TOO_SMALL) {
return;
}
HandleBuffer = AllocateZeroPool (HandleBufferSize);
if (HandleBuffer == NULL) {
return;
}
Status = gSmst->SmmLocateHandle(
ByProtocol,
&gEfiLoadedImageProtocolGuid,
NULL,
&HandleBufferSize,
HandleBuffer
);
if (EFI_ERROR(Status)) {
return;
}
NoHandles = HandleBufferSize/sizeof(EFI_HANDLE);
mImageStructCountMax = NoHandles;
mImageStruct = AllocateZeroPool(mImageStructCountMax * sizeof(IMAGE_STRUCT));
if (mImageStruct == NULL) {
goto Done;
}
for (Index = 0; Index < NoHandles; Index++) {
Status = gSmst->SmmHandleProtocol(
HandleBuffer[Index],
&gEfiLoadedImageProtocolGuid,
(VOID **)&LoadedImage
);
if (EFI_ERROR(Status)) {
continue;
}
PathStr = ConvertDevicePathToText(LoadedImage->FilePath, TRUE, TRUE);
GetDriverGuid(LoadedImage, &Guid);
DEBUG ((DEBUG_INFO, "Image: %g ", &Guid));
EntryPoint = 0;
LoadedImagePrivate = BASE_CR(LoadedImage, EFI_SMM_DRIVER_ENTRY, SmmLoadedImage);
RealImageBase = (UINTN)LoadedImage->ImageBase;
if (LoadedImagePrivate->Signature == EFI_SMM_DRIVER_ENTRY_SIGNATURE) {
EntryPoint = (UINTN)LoadedImagePrivate->ImageEntryPoint;
if ((EntryPoint != 0) && ((EntryPoint < (UINTN)LoadedImage->ImageBase) || (EntryPoint >= ((UINTN)LoadedImage->ImageBase + (UINTN)LoadedImage->ImageSize)))) {
//
// If the EntryPoint is not in the range of image buffer, it should come from emulation environment.
// So patch ImageBuffer here to align the EntryPoint.
//
Status = InternalPeCoffGetEntryPoint(LoadedImage->ImageBase, &EntryPointInImage);
ASSERT_EFI_ERROR(Status);
RealImageBase = (UINTN)LoadedImage->ImageBase + EntryPoint - (UINTN)EntryPointInImage;
}
}
DEBUG ((DEBUG_INFO, "(0x%x - 0x%x", RealImageBase, (UINTN)LoadedImage->ImageSize));
if (EntryPoint != 0) {
DEBUG ((DEBUG_INFO, ", EntryPoint:0x%x", EntryPoint));
}
DEBUG ((DEBUG_INFO, ")\n"));
if (RealImageBase != 0) {
PdbString = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) RealImageBase);
DEBUG ((DEBUG_INFO, " pdb - %a\n", PdbString));
} else {
PdbString = NULL;
}
DEBUG ((DEBUG_INFO, " (%s)\n", PathStr));
AddImageStruct((UINTN)RealImageBase, (UINTN)LoadedImage->ImageSize, EntryPoint, &Guid, PdbString);
}
Done:
FreePool(HandleBuffer);
return;
}
/**
Dump SMI child context.
@param HandlerType the handler type
@param Context the handler context
@param ContextSize the handler context size
**/
VOID
DumpSmiChildContext (
IN EFI_GUID *HandlerType,
IN VOID *Context,
IN UINTN ContextSize
)
{
if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " SwSmi - 0x%x\n", ((EFI_SMM_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue));
} else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " SxType - 0x%x\n", ((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Type));
DEBUG ((DEBUG_INFO, " SxPhase - 0x%x\n", ((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmPowerButtonDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " PowerButtonPhase - 0x%x\n", ((EFI_SMM_POWER_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmStandbyButtonDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " StandbyButtonPhase - 0x%x\n", ((EFI_SMM_STANDBY_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmPeriodicTimerDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " PeriodicTimerPeriod - %ld\n", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->Period));
DEBUG ((DEBUG_INFO, " PeriodicTimerSmiTickInterval - %ld\n", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->SmiTickInterval));
} else if (CompareGuid (HandlerType, &gEfiSmmGpiDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " GpiNum - 0x%lx\n", ((EFI_SMM_GPI_REGISTER_CONTEXT *)Context)->GpiNum));
} else if (CompareGuid (HandlerType, &gEfiSmmIoTrapDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " IoTrapAddress - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Address));
DEBUG ((DEBUG_INFO, " IoTrapLength - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Length));
DEBUG ((DEBUG_INFO, " IoTrapType - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
} else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " UsbType - 0x%x\n", ((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
DEBUG ((DEBUG_INFO, " UsbDevicePath - %s\n", ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE)));
} else {
DEBUG ((DEBUG_INFO, " Context - "));
InternalDumpData (Context, ContextSize);
DEBUG ((DEBUG_INFO, "\n"));
}
}
/**
Dump all SMI handlers associated with SmiEntry.
@param SmiEntry SMI entry.
**/
VOID
DumpSmiHandlerOnSmiEntry(
IN SMI_ENTRY *SmiEntry
)
{
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
IMAGE_STRUCT *ImageStruct;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
ImageStruct = AddressToImageStruct((UINTN)SmiHandler->Handler);
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " Module - %g", &ImageStruct->FileGuid));
}
if ((ImageStruct != NULL) && (ImageStruct->PdbString[0] != 0)) {
DEBUG ((DEBUG_INFO, " (Pdb - %a)", ImageStruct->PdbString));
}
DEBUG ((DEBUG_INFO, "\n"));
if (SmiHandler->ContextSize != 0) {
DumpSmiChildContext (&SmiEntry->HandlerType, SmiHandler->Context, SmiHandler->ContextSize);
}
DEBUG ((DEBUG_INFO, " Handler - 0x%x", SmiHandler->Handler));
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " <== RVA - 0x%x", (UINTN)SmiHandler->Handler - ImageStruct->ImageBase));
}
DEBUG ((DEBUG_INFO, "\n"));
DEBUG ((DEBUG_INFO, " CallerAddr - 0x%x", SmiHandler->CallerAddr));
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " <== RVA - 0x%x", SmiHandler->CallerAddr - ImageStruct->ImageBase));
}
DEBUG ((DEBUG_INFO, "\n"));
}
return;
}
/**
Dump all SMI entry on the list.
@param SmiEntryList a list of SMI entry.
**/
VOID
DumpSmiEntryList(
IN LIST_ENTRY *SmiEntryList
)
{
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
DEBUG ((DEBUG_INFO, "SmiEntry - %g\n", &SmiEntry->HandlerType));
DumpSmiHandlerOnSmiEntry(SmiEntry);
}
return;
}
/**
SMM Ready To Lock event notification handler.
This function collects all SMM image information and build SmiHandleProfile database,
and register SmiHandlerProfile SMI handler.
@param[in] Protocol Points to the protocol's unique identifier.
@param[in] Interface Points to the interface instance.
@param[in] Handle The handle on which the interface was installed.
@retval EFI_SUCCESS Notification handler runs successfully.
**/
EFI_STATUS
EFIAPI
SmmReadyToLockInSmiHandlerProfile (
IN CONST EFI_GUID *Protocol,
IN VOID *Interface,
IN EFI_HANDLE Handle
)
{
//
// Dump all image
//
DEBUG ((DEBUG_INFO, "##################\n"));
DEBUG ((DEBUG_INFO, "# IMAGE DATABASE #\n"));
DEBUG ((DEBUG_INFO, "##################\n"));
GetSmmLoadedImage ();
DEBUG ((DEBUG_INFO, "\n"));
//
// Dump SMI Handler
//
DEBUG ((DEBUG_INFO, "########################\n"));
DEBUG ((DEBUG_INFO, "# SMI Handler DATABASE #\n"));
DEBUG ((DEBUG_INFO, "########################\n"));
DEBUG ((DEBUG_INFO, "# 1. ROOT SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreRootSmiEntryList);
);
DEBUG ((DEBUG_INFO, "# 2. GUID SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreSmiEntryList);
);
DEBUG ((DEBUG_INFO, "# 3. Hardware SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreHardwareSmiEntryList);
);
DEBUG ((DEBUG_INFO, "\n"));
RegisterSmiHandlerProfileHandler();
if (mImageStruct != NULL) {
FreePool(mImageStruct);
}
return EFI_SUCCESS;
}
/**
returns SMM image data base size.
@return SMM image data base size.
**/
UINTN
GetSmmImageDatabaseSize(
VOID
)
{
UINTN Size;
UINTN Index;
Size = (sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE)) * mImageStructCount;
for (Index = 0; Index < mImageStructCount; Index++) {
Size += mImageStruct[Index].PdbStringSize;
}
return Size;
}
/**
returns all SMI handlers' size associated with SmiEntry.
@param SmiEntry SMI entry.
@return all SMI handlers' size associated with SmiEntry.
**/
UINTN
GetSmmSmiHandlerSizeOnSmiEntry(
IN SMI_ENTRY *SmiEntry
)
{
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
UINTN Size;
Size = 0;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
Size += sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + SmiHandler->ContextSize;
}
return Size;
}
/**
return all SMI handler database size on the SMI entry list.
@param SmiEntryList a list of SMI entry.
@return all SMI handler database size on the SMI entry list.
**/
UINTN
GetSmmSmiDatabaseSize(
IN LIST_ENTRY *SmiEntryList
)
{
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
UINTN Size;
Size = 0;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
Size += sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
Size += GetSmmSmiHandlerSizeOnSmiEntry(SmiEntry);
}
return Size;
}
/**
return SMI handler profile database size.
@return SMI handler profile database size.
**/
UINTN
GetSmiHandlerProfileDatabaseSize (
VOID
)
{
mSmmImageDatabaseSize = GetSmmImageDatabaseSize();
mSmmRootSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreRootSmiEntryList);
mSmmSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreSmiEntryList);
mSmmHardwareSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreHardwareSmiEntryList);
return mSmmImageDatabaseSize + mSmmSmiDatabaseSize + mSmmRootSmiDatabaseSize + mSmmHardwareSmiDatabaseSize;
}
/**
get SMM image database.
@param Data The buffer to hold SMM image database
@param ExpectedSize The expected size of the SMM image database
@return SMM image data base size.
**/
UINTN
GetSmmImageDatabaseData (
IN OUT VOID *Data,
IN UINTN ExpectedSize
)
{
SMM_CORE_IMAGE_DATABASE_STRUCTURE *ImageStruct;
UINTN Size;
UINTN Index;
ImageStruct = Data;
Size = 0;
for (Index = 0; Index < mImageStructCount; Index++) {
if (Size >= ExpectedSize) {
return 0;
}
if (sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + mImageStruct[Index].PdbStringSize > ExpectedSize - Size) {
return 0;
}
ImageStruct->Header.Signature = SMM_CORE_IMAGE_DATABASE_SIGNATURE;
ImageStruct->Header.Length = (UINT32)(sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + mImageStruct[Index].PdbStringSize);
ImageStruct->Header.Revision = SMM_CORE_IMAGE_DATABASE_REVISION;
CopyGuid(&ImageStruct->FileGuid, &mImageStruct[Index].FileGuid);
ImageStruct->ImageRef = mImageStruct[Index].ImageRef;
ImageStruct->EntryPoint = mImageStruct[Index].EntryPoint;
ImageStruct->ImageBase = mImageStruct[Index].ImageBase;
ImageStruct->ImageSize = mImageStruct[Index].ImageSize;
ImageStruct->PdbStringOffset = sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE);
CopyMem ((VOID *)((UINTN)ImageStruct + ImageStruct->PdbStringOffset), mImageStruct[Index].PdbString, mImageStruct[Index].PdbStringSize);
ImageStruct = (SMM_CORE_IMAGE_DATABASE_STRUCTURE *)((UINTN)ImageStruct + ImageStruct->Header.Length);
Size += sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + mImageStruct[Index].PdbStringSize;
}
if (ExpectedSize != Size) {
return 0;
}
return Size;
}
/**
get all SMI handler data associated with SmiEntry.
@param SmiEntry SMI entry.
@param Data The buffer to hold all SMI handler data
@param MaxSize The max size of the SMM image database
@param Count The count of the SMI handler.
@return SMM image data base size.
**/
UINTN
GetSmmSmiHandlerDataOnSmiEntry(
IN SMI_ENTRY *SmiEntry,
IN OUT VOID *Data,
IN UINTN MaxSize,
OUT UINTN *Count
)
{
SMM_CORE_SMI_HANDLER_STRUCTURE *SmiHandlerStruct;
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
UINTN Size;
SmiHandlerStruct = Data;
Size = 0;
*Count = 0;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
if (Size >= MaxSize) {
*Count = 0;
return 0;
}
if (sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + SmiHandler->ContextSize > MaxSize - Size) {
*Count = 0;
return 0;
}
SmiHandlerStruct->Length = (UINT32)(sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + SmiHandler->ContextSize);
SmiHandlerStruct->CallerAddr = (UINTN)SmiHandler->CallerAddr;
SmiHandlerStruct->Handler = (UINTN)SmiHandler->Handler;
SmiHandlerStruct->ImageRef = AddressToImageRef((UINTN)SmiHandler->Handler);
SmiHandlerStruct->ContextBufferSize = (UINT32)SmiHandler->ContextSize;
if (SmiHandler->ContextSize != 0) {
SmiHandlerStruct->ContextBufferOffset = sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE);
CopyMem ((UINT8 *)SmiHandlerStruct + SmiHandlerStruct->ContextBufferOffset, SmiHandler->Context, SmiHandler->ContextSize);
} else {
SmiHandlerStruct->ContextBufferOffset = 0;
}
Size += sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + SmiHandler->ContextSize;
SmiHandlerStruct = (SMM_CORE_SMI_HANDLER_STRUCTURE *)((UINTN)SmiHandlerStruct + SmiHandlerStruct->Length);
*Count = *Count + 1;
}
return Size;
}
/**
get all SMI handler database on the SMI entry list.
@param SmiEntryList a list of SMI entry.
@param HandlerCategory The handler category
@param Data The buffer to hold all SMI handler database
@param ExpectedSize The expected size of the SMM image database
@return all SMI database size on the SMI entry list.
**/
UINTN
GetSmmSmiDatabaseData(
IN LIST_ENTRY *SmiEntryList,
IN UINT32 HandlerCategory,
IN OUT VOID *Data,
IN UINTN ExpectedSize
)
{
SMM_CORE_SMI_DATABASE_STRUCTURE *SmiStruct;
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
UINTN Size;
UINTN SmiHandlerSize;
UINTN SmiHandlerCount;
SmiStruct = Data;
Size = 0;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
if (Size >= ExpectedSize) {
return 0;
}
if (sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE) > ExpectedSize - Size) {
return 0;
}
SmiStruct->Header.Signature = SMM_CORE_SMI_DATABASE_SIGNATURE;
SmiStruct->Header.Length = sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
SmiStruct->Header.Revision = SMM_CORE_SMI_DATABASE_REVISION;
SmiStruct->HandlerCategory = HandlerCategory;
CopyGuid(&SmiStruct->HandlerType, &SmiEntry->HandlerType);
Size += sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
SmiHandlerSize = GetSmmSmiHandlerDataOnSmiEntry(SmiEntry, (UINT8 *)SmiStruct + SmiStruct->Header.Length, ExpectedSize - Size, &SmiHandlerCount);
SmiStruct->HandlerCount = SmiHandlerCount;
Size += SmiHandlerSize;
SmiStruct->Header.Length += (UINT32)SmiHandlerSize;
SmiStruct = (VOID *)((UINTN)SmiStruct + SmiStruct->Header.Length);
}
if (ExpectedSize != Size) {
return 0;
}
return Size;
}
/**
Get SMI handler profile database.
@param Data the buffer to hold SMI handler profile database
@retval EFI_SUCCESS the database is got.
@retval EFI_INVALID_PARAMETER the database size mismatch.
**/
EFI_STATUS
GetSmiHandlerProfileDatabaseData(
IN OUT VOID *Data
)
{
UINTN SmmImageDatabaseSize;
UINTN SmmSmiDatabaseSize;
UINTN SmmRootSmiDatabaseSize;
UINTN SmmHardwareSmiDatabaseSize;
DEBUG((DEBUG_VERBOSE, "GetSmiHandlerProfileDatabaseData\n"));
SmmImageDatabaseSize = GetSmmImageDatabaseData(Data, mSmmImageDatabaseSize);
if (SmmImageDatabaseSize != mSmmImageDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmImageDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmRootSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreRootSmiEntryList, SmmCoreSmiHandlerCategoryRootHandler, (UINT8 *)Data + SmmImageDatabaseSize, mSmmRootSmiDatabaseSize);
if (SmmRootSmiDatabaseSize != mSmmRootSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmRootSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreSmiEntryList, SmmCoreSmiHandlerCategoryGuidHandler, (UINT8 *)Data + SmmImageDatabaseSize + mSmmRootSmiDatabaseSize, mSmmSmiDatabaseSize);
if (SmmSmiDatabaseSize != mSmmSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmHardwareSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreHardwareSmiEntryList, SmmCoreSmiHandlerCategoryHardwareHandler, (UINT8 *)Data + SmmImageDatabaseSize + SmmRootSmiDatabaseSize + SmmSmiDatabaseSize, mSmmHardwareSmiDatabaseSize);
if (SmmHardwareSmiDatabaseSize != mSmmHardwareSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmHardwareSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
build SMI handler profile database.
**/
VOID
BuildSmiHandlerProfileDatabase(
VOID
)
{
EFI_STATUS Status;
mSmiHandlerProfileDatabaseSize = GetSmiHandlerProfileDatabaseSize();
mSmiHandlerProfileDatabase = AllocatePool(mSmiHandlerProfileDatabaseSize);
if (mSmiHandlerProfileDatabase == NULL) {
return;
}
Status = GetSmiHandlerProfileDatabaseData(mSmiHandlerProfileDatabase);
if (EFI_ERROR(Status)) {
FreePool(mSmiHandlerProfileDatabase);
mSmiHandlerProfileDatabase = NULL;
}
}
/**
Copy SMI handler profile data.
@param DataBuffer The buffer to hold SMI handler profile data.
@param DataSize On input, data buffer size.
On output, actual data buffer size copied.
@param DataOffset On input, data buffer offset to copy.
On output, next time data buffer offset to copy.
**/
VOID
SmiHandlerProfileCopyData(
OUT VOID *DataBuffer,
IN OUT UINT64 *DataSize,
IN OUT UINT64 *DataOffset
)
{
if (*DataOffset >= mSmiHandlerProfileDatabaseSize) {
*DataOffset = mSmiHandlerProfileDatabaseSize;
return;
}
if (mSmiHandlerProfileDatabaseSize - *DataOffset < *DataSize) {
*DataSize = mSmiHandlerProfileDatabaseSize - *DataOffset;
}
CopyMem(
DataBuffer,
(UINT8 *)mSmiHandlerProfileDatabase + *DataOffset,
(UINTN)*DataSize
);
*DataOffset = *DataOffset + *DataSize;
}
/**
SMI handler profile handler to get info.
@param SmiHandlerProfileParameterGetInfo The parameter of SMI handler profile get info.
**/
VOID
SmiHandlerProfileHandlerGetInfo(
IN SMI_HANDLER_PROFILE_PARAMETER_GET_INFO *SmiHandlerProfileParameterGetInfo
)
{
BOOLEAN SmiHandlerProfileRecordingStatus;
SmiHandlerProfileRecordingStatus = mSmiHandlerProfileRecordingStatus;
mSmiHandlerProfileRecordingStatus = FALSE;
SmiHandlerProfileParameterGetInfo->DataSize = mSmiHandlerProfileDatabaseSize;
SmiHandlerProfileParameterGetInfo->Header.ReturnStatus = 0;
mSmiHandlerProfileRecordingStatus = SmiHandlerProfileRecordingStatus;
}
/**
SMI handler profile handler to get data by offset.
@param SmiHandlerProfileParameterGetDataByOffset The parameter of SMI handler profile get data by offset.
**/
VOID
SmiHandlerProfileHandlerGetDataByOffset(
IN SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET *SmiHandlerProfileParameterGetDataByOffset
)
{
SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET SmiHandlerProfileGetDataByOffset;
BOOLEAN SmiHandlerProfileRecordingStatus;
SmiHandlerProfileRecordingStatus = mSmiHandlerProfileRecordingStatus;
mSmiHandlerProfileRecordingStatus = FALSE;
CopyMem(&SmiHandlerProfileGetDataByOffset, SmiHandlerProfileParameterGetDataByOffset, sizeof(SmiHandlerProfileGetDataByOffset));
//
// Sanity check
//
if (!SmmIsBufferOutsideSmmValid((UINTN)SmiHandlerProfileGetDataByOffset.DataBuffer, (UINTN)SmiHandlerProfileGetDataByOffset.DataSize)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetDataByOffset: SMI handler profile get data in SMRAM or overflow!\n"));
SmiHandlerProfileParameterGetDataByOffset->Header.ReturnStatus = (UINT64)(INT64)(INTN)EFI_ACCESS_DENIED;
goto Done;
}
SmiHandlerProfileCopyData((VOID *)(UINTN)SmiHandlerProfileGetDataByOffset.DataBuffer, &SmiHandlerProfileGetDataByOffset.DataSize, &SmiHandlerProfileGetDataByOffset.DataOffset);
CopyMem(SmiHandlerProfileParameterGetDataByOffset, &SmiHandlerProfileGetDataByOffset, sizeof(SmiHandlerProfileGetDataByOffset));
SmiHandlerProfileParameterGetDataByOffset->Header.ReturnStatus = 0;
Done:
mSmiHandlerProfileRecordingStatus = SmiHandlerProfileRecordingStatus;
}
/**
Dispatch function for a Software SMI handler.
Caution: This function may receive untrusted input.
Communicate buffer and buffer size are external input, so this function will do basic validation.
@param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param Context Points to an optional handler context which was specified when the
handler was registered.
@param CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-SMM environment into an SMM environment.
@param CommBufferSize The size of the CommBuffer.
@retval EFI_SUCCESS Command is handled successfully.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileHandler(
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context OPTIONAL,
IN OUT VOID *CommBuffer OPTIONAL,
IN OUT UINTN *CommBufferSize OPTIONAL
)
{
SMI_HANDLER_PROFILE_PARAMETER_HEADER *SmiHandlerProfileParameterHeader;
UINTN TempCommBufferSize;
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler Enter\n"));
if (mSmiHandlerProfileDatabase == NULL) {
return EFI_SUCCESS;
}
//
// If input is invalid, stop processing this SMI
//
if (CommBuffer == NULL || CommBufferSize == NULL) {
return EFI_SUCCESS;
}
TempCommBufferSize = *CommBufferSize;
if (TempCommBufferSize < sizeof(SMI_HANDLER_PROFILE_PARAMETER_HEADER)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
if (!SmmIsBufferOutsideSmmValid((UINTN)CommBuffer, TempCommBufferSize)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer in SMRAM or overflow!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileParameterHeader = (SMI_HANDLER_PROFILE_PARAMETER_HEADER *)((UINTN)CommBuffer);
SmiHandlerProfileParameterHeader->ReturnStatus = (UINT64)-1;
switch (SmiHandlerProfileParameterHeader->Command) {
case SMI_HANDLER_PROFILE_COMMAND_GET_INFO:
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetInfo\n"));
if (TempCommBufferSize != sizeof(SMI_HANDLER_PROFILE_PARAMETER_GET_INFO)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileHandlerGetInfo((SMI_HANDLER_PROFILE_PARAMETER_GET_INFO *)(UINTN)CommBuffer);
break;
case SMI_HANDLER_PROFILE_COMMAND_GET_DATA_BY_OFFSET:
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetDataByOffset\n"));
if (TempCommBufferSize != sizeof(SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileHandlerGetDataByOffset((SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET *)(UINTN)CommBuffer);
break;
default:
break;
}
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler Exit\n"));
return EFI_SUCCESS;
}
/**
Register SMI handler profile handler.
**/
VOID
RegisterSmiHandlerProfileHandler (
VOID
)
{
EFI_STATUS Status;
EFI_HANDLE DispatchHandle;
Status = gSmst->SmiHandlerRegister (
SmiHandlerProfileHandler,
&gSmiHandlerProfileGuid,
&DispatchHandle
);
ASSERT_EFI_ERROR (Status);
BuildSmiHandlerProfileDatabase();
}
/**
Finds the SMI entry for the requested handler type.
@param HandlerType The type of the interrupt
@param Create Create a new entry if not found
@return SMI entry
**/
SMI_ENTRY *
SmmCoreFindHardwareSmiEntry (
IN EFI_GUID *HandlerType,
IN BOOLEAN Create
)
{
LIST_ENTRY *Link;
SMI_ENTRY *Item;
SMI_ENTRY *SmiEntry;
//
// Search the SMI entry list for the matching GUID
//
SmiEntry = NULL;
for (Link = mHardwareSmiEntryList.ForwardLink;
Link != &mHardwareSmiEntryList;
Link = Link->ForwardLink) {
Item = CR (Link, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
if (CompareGuid (&Item->HandlerType, HandlerType)) {
//
// This is the SMI entry
//
SmiEntry = Item;
break;
}
}
//
// If the protocol entry was not found and Create is TRUE, then
// allocate a new entry
//
if ((SmiEntry == NULL) && Create) {
SmiEntry = AllocatePool (sizeof(SMI_ENTRY));
if (SmiEntry != NULL) {
//
// Initialize new SMI entry structure
//
SmiEntry->Signature = SMI_ENTRY_SIGNATURE;
CopyGuid ((VOID *)&SmiEntry->HandlerType, HandlerType);
InitializeListHead (&SmiEntry->SmiHandlers);
//
// Add it to SMI entry list
//
InsertTailList (&mHardwareSmiEntryList, &SmiEntry->AllEntries);
}
}
return SmiEntry;
}
/**
Convert EFI_SMM_USB_REGISTER_CONTEXT to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT.
@param UsbContext A pointer to EFI_SMM_USB_REGISTER_CONTEXT
@param UsbContextSize The size of EFI_SMM_USB_REGISTER_CONTEXT in bytes
@param SmiHandlerUsbContextSize The size of SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT in bytes
@return SmiHandlerUsbContext A pointer to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT
**/
SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *
ConvertSmiHandlerUsbContext (
IN EFI_SMM_USB_REGISTER_CONTEXT *UsbContext,
IN UINTN UsbContextSize,
OUT UINTN *SmiHandlerUsbContextSize
)
{
UINTN DevicePathSize;
SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *SmiHandlerUsbContext;
ASSERT (UsbContextSize == sizeof(EFI_SMM_USB_REGISTER_CONTEXT));
DevicePathSize = GetDevicePathSize (UsbContext->Device);
SmiHandlerUsbContext = AllocatePool (sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize);
if (SmiHandlerUsbContext == NULL) {
*SmiHandlerUsbContextSize = 0;
return NULL;
}
SmiHandlerUsbContext->Type = UsbContext->Type;
SmiHandlerUsbContext->DevicePathSize = (UINT32)DevicePathSize;
CopyMem (SmiHandlerUsbContext + 1, UsbContext->Device, DevicePathSize);
*SmiHandlerUsbContextSize = sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize;
return SmiHandlerUsbContext;
}
/**
This function is called by SmmChildDispatcher module to report
a new SMI handler is registered, to SmmCore.
@param This The protocol instance
@param HandlerGuid The GUID to identify the type of the handler.
For the SmmChildDispatch protocol, the HandlerGuid
must be the GUID of SmmChildDispatch protocol.
@param Handler The SMI handler.
@param CallerAddress The address of the module who registers the SMI handler.
@param Context The context of the SMI handler.
For the SmmChildDispatch protocol, the Context
must match the one defined for SmmChildDispatch protocol.
@param ContextSize The size of the context in bytes.
For the SmmChildDispatch protocol, the Context
must match the one defined for SmmChildDispatch protocol.
@retval EFI_SUCCESS The information is recorded.
@retval EFI_OUT_OF_RESOURCES There is no enough resource to record the information.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileRegisterHandler (
IN SMI_HANDLER_PROFILE_PROTOCOL *This,
IN EFI_GUID *HandlerGuid,
IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
IN PHYSICAL_ADDRESS CallerAddress,
IN VOID *Context, OPTIONAL
IN UINTN ContextSize OPTIONAL
)
{
SMI_HANDLER *SmiHandler;
SMI_ENTRY *SmiEntry;
LIST_ENTRY *List;
if (((ContextSize == 0) && (Context != NULL)) ||
((ContextSize != 0) && (Context == NULL))) {
return EFI_INVALID_PARAMETER;
}
SmiHandler = AllocateZeroPool (sizeof (SMI_HANDLER));
if (SmiHandler == NULL) {
return EFI_OUT_OF_RESOURCES;
}
SmiHandler->Signature = SMI_HANDLER_SIGNATURE;
SmiHandler->Handler = Handler;
SmiHandler->CallerAddr = (UINTN)CallerAddress;
SmiHandler->Context = Context;
SmiHandler->ContextSize = ContextSize;
if (Context != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
SmiHandler->Context = ConvertSmiHandlerUsbContext (Context, ContextSize, &SmiHandler->ContextSize);
} else {
SmiHandler->Context = AllocateCopyPool (ContextSize, Context);
}
}
if (SmiHandler->Context == NULL) {
SmiHandler->ContextSize = 0;
}
SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, TRUE);
if (SmiEntry == NULL) {
if (SmiHandler->Context != NULL) {
FreePool (SmiHandler->Context);
}
FreePool (SmiHandler);
return EFI_OUT_OF_RESOURCES;
}
List = &SmiEntry->SmiHandlers;
SmiHandler->SmiEntry = SmiEntry;
InsertTailList (List, &SmiHandler->Link);
return EFI_SUCCESS;
}
/**
This function is called by SmmChildDispatcher module to report
an existing SMI handler is unregistered, to SmmCore.
@param This The protocol instance
@param HandlerGuid The GUID to identify the type of the handler.
For the SmmChildDispatch protocol, the HandlerGuid
must be the GUID of SmmChildDispatch protocol.
@param Handler The SMI handler.
@param Context The context of the SMI handler.
If it is NOT NULL, it will be used to check what is registered.
@param ContextSize The size of the context in bytes.
If Context is NOT NULL, it will be used to check what is registered.
@retval EFI_SUCCESS The original record is removed.
@retval EFI_NOT_FOUND There is no record for the HandlerGuid and handler.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileUnregisterHandler (
IN SMI_HANDLER_PROFILE_PROTOCOL *This,
IN EFI_GUID *HandlerGuid,
IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
IN VOID *Context, OPTIONAL
IN UINTN ContextSize OPTIONAL
)
{
LIST_ENTRY *Link;
LIST_ENTRY *Head;
SMI_HANDLER *SmiHandler;
SMI_ENTRY *SmiEntry;
SMI_HANDLER *TargetSmiHandler;
VOID *SearchContext;
UINTN SearchContextSize;
if (((ContextSize == 0) && (Context != NULL)) ||
((ContextSize != 0) && (Context == NULL))) {
return EFI_INVALID_PARAMETER;
}
SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, FALSE);
if (SmiEntry == NULL) {
return EFI_NOT_FOUND;
}
SearchContext = Context;
SearchContextSize = ContextSize;
if (Context != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
SearchContext = ConvertSmiHandlerUsbContext (Context, ContextSize, &SearchContextSize);
}
}
TargetSmiHandler = NULL;
Head = &SmiEntry->SmiHandlers;
for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
SmiHandler = CR (Link, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
if (SmiHandler->Handler == Handler) {
if ((SearchContext == NULL) ||
((SearchContextSize == SmiHandler->ContextSize) && (CompareMem (SearchContext, SmiHandler->Context, SearchContextSize) == 0))) {
TargetSmiHandler = SmiHandler;
break;
}
}
}
if (SearchContext != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
FreePool (SearchContext);
}
}
if (TargetSmiHandler == NULL) {
return EFI_NOT_FOUND;
}
SmiHandler = TargetSmiHandler;
RemoveEntryList (&SmiHandler->Link);
if (SmiHandler->Context != NULL) {
FreePool (SmiHandler->Context);
}
FreePool (SmiHandler);
if (IsListEmpty (&SmiEntry->SmiHandlers)) {
RemoveEntryList (&SmiEntry->AllEntries);
FreePool (SmiEntry);
}
return EFI_SUCCESS;
}
/**
Initialize SmiHandler profile feature.
**/
VOID
SmmCoreInitializeSmiHandlerProfile (
VOID
)
{
EFI_STATUS Status;
VOID *Registration;
EFI_HANDLE Handle;
if ((PcdGet8 (PcdSmiHandlerProfilePropertyMask) & 0x1) != 0) {
InsertTailList (&mRootSmiEntryList, &mRootSmiEntry.AllEntries);
Status = gSmst->SmmRegisterProtocolNotify (
&gEfiSmmReadyToLockProtocolGuid,
SmmReadyToLockInSmiHandlerProfile,
&Registration
);
ASSERT_EFI_ERROR (Status);
Handle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&Handle,
&gSmiHandlerProfileGuid,
EFI_NATIVE_INTERFACE,
&mSmiHandlerProfile
);
ASSERT_EFI_ERROR (Status);
}
}
|