2 CPU Register Table Library functions.
4 Copyright (c) 2017, 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.
15 #include "RegisterCpuFeatures.h"
18 Checks if two CPU feature bit masks are equal.
20 @param[in] FirstFeatureMask The first input CPU feature bit mask
21 @param[in] SecondFeatureMask The second input CPU feature bit mask
23 @retval TRUE Two CPU feature bit masks are equal.
24 @retval FALSE Two CPU feature bit masks are not equal.
28 IN UINT8
*FirstFeatureMask
,
29 IN UINT8
*SecondFeatureMask
34 BitMaskSize
= PcdGetSize (PcdCpuFeaturesSupport
);
35 if (CompareMem (FirstFeatureMask
, SecondFeatureMask
, BitMaskSize
) == 0) {
43 Function that uses DEBUG() macros to display the contents of a a CPU feature bit mask.
45 @param[in] FeatureMask A pointer to the CPU feature bit mask.
56 BitMaskSize
= PcdGetSize (PcdCpuFeaturesSupport
);
57 Data8
= (UINT8
*) FeatureMask
;
58 for (Index
= 0; Index
< BitMaskSize
; Index
++) {
59 DEBUG ((DEBUG_INFO
, " %02x ", *Data8
++));
61 DEBUG ((DEBUG_INFO
, "\n"));
65 Dump CPU feature name or CPU feature bit mask.
67 @param[in] CpuFeature Pointer to CPU_FEATURES_ENTRY
71 IN CPU_FEATURES_ENTRY
*CpuFeature
75 if (CpuFeature
->FeatureName
!= NULL
) {
76 DEBUG ((DEBUG_INFO
, "FeatureName: %a\n", CpuFeature
->FeatureName
));
78 DEBUG ((DEBUG_INFO
, "FeatureMask = "));
79 DumpCpuFeatureMask (CpuFeature
->FeatureMask
);
84 Determines if the feature bit mask is in dependent CPU feature bit mask buffer.
86 @param[in] FeatureMask Pointer to CPU feature bit mask
87 @param[in] DependentBitMask Pointer to dependent CPU feature bit mask buffer
89 @retval TRUE The feature bit mask is in dependent CPU feature bit mask buffer.
90 @retval FALSE The feature bit mask is not in dependent CPU feature bit mask buffer.
94 IN UINT8
*FeatureMask
,
95 IN UINT8
*DependentBitMask
103 BitMaskSize
= PcdGetSize (PcdCpuFeaturesSupport
);
106 Data2
= DependentBitMask
;
107 for (Index
= 0; Index
< BitMaskSize
; Index
++) {
108 if (((*(Data1
++)) & (*(Data2
++))) != 0) {
116 Checks and adjusts CPU features order per dependency relationship.
118 @param[in] FeatureList Pointer to CPU feature list
121 CheckCpuFeaturesDependency (
122 IN LIST_ENTRY
*FeatureList
125 LIST_ENTRY
*CurrentEntry
;
126 CPU_FEATURES_ENTRY
*CpuFeature
;
127 LIST_ENTRY
*CheckEntry
;
128 CPU_FEATURES_ENTRY
*CheckFeature
;
130 LIST_ENTRY
*TempEntry
;
132 CurrentEntry
= GetFirstNode (FeatureList
);
133 while (!IsNull (FeatureList
, CurrentEntry
)) {
135 CpuFeature
= CPU_FEATURE_ENTRY_FROM_LINK (CurrentEntry
);
136 if (CpuFeature
->BeforeAll
) {
138 // Check all features dispatched before this entry
140 CheckEntry
= GetFirstNode (FeatureList
);
141 while (CheckEntry
!= CurrentEntry
) {
142 CheckFeature
= CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry
);
143 if (!CheckFeature
->BeforeAll
) {
145 // If this feature has no BeforeAll flag and is dispatched before CpuFeature,
146 // insert currentEntry before Checked feature
148 RemoveEntryList (CurrentEntry
);
149 InsertTailList (CheckEntry
, CurrentEntry
);
153 CheckEntry
= CheckEntry
->ForwardLink
;
160 if (CpuFeature
->AfterAll
) {
162 // Check all features dispatched after this entry
164 CheckEntry
= GetNextNode (FeatureList
, CurrentEntry
);
165 while (!IsNull (FeatureList
, CheckEntry
)) {
166 CheckFeature
= CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry
);
167 if (!CheckFeature
->AfterAll
) {
169 // If this feature has no AfterAll flag and is dispatched after CpuFeature,
170 // insert currentEntry after Checked feature
172 TempEntry
= GetNextNode (FeatureList
, CurrentEntry
);
173 RemoveEntryList (CurrentEntry
);
174 InsertHeadList (CheckEntry
, CurrentEntry
);
175 CurrentEntry
= TempEntry
;
179 CheckEntry
= CheckEntry
->ForwardLink
;
186 if (CpuFeature
->BeforeFeatureBitMask
!= NULL
) {
188 // Check all features dispatched before this entry
190 CheckEntry
= GetFirstNode (FeatureList
);
191 while (CheckEntry
!= CurrentEntry
) {
192 CheckFeature
= CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry
);
193 if (IsBitMaskMatchCheck (CheckFeature
->FeatureMask
, CpuFeature
->BeforeFeatureBitMask
)) {
195 // If there is dependency, swap them
197 RemoveEntryList (CurrentEntry
);
198 InsertTailList (CheckEntry
, CurrentEntry
);
202 CheckEntry
= CheckEntry
->ForwardLink
;
209 if (CpuFeature
->AfterFeatureBitMask
!= NULL
) {
211 // Check all features dispatched after this entry
213 CheckEntry
= GetNextNode (FeatureList
, CurrentEntry
);
214 while (!IsNull (FeatureList
, CheckEntry
)) {
215 CheckFeature
= CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry
);
216 if (IsBitMaskMatchCheck (CheckFeature
->FeatureMask
, CpuFeature
->AfterFeatureBitMask
)) {
218 // If there is dependency, swap them
220 TempEntry
= GetNextNode (FeatureList
, CurrentEntry
);
221 RemoveEntryList (CurrentEntry
);
222 InsertHeadList (CheckEntry
, CurrentEntry
);
223 CurrentEntry
= TempEntry
;
227 CheckEntry
= CheckEntry
->ForwardLink
;
234 // No swap happened, check the next feature
236 CurrentEntry
= CurrentEntry
->ForwardLink
;
241 Worker function to register CPU Feature.
243 @param[in] CpuFeature Pointer to CPU feature entry
245 @retval RETURN_SUCCESS The CPU feature was successfully registered.
246 @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
248 @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
249 supported due to a circular dependency between
250 BEFORE and AFTER features.
253 RegisterCpuFeatureWorker (
254 IN CPU_FEATURES_ENTRY
*CpuFeature
258 CPU_FEATURES_DATA
*CpuFeaturesData
;
259 CPU_FEATURES_ENTRY
*CpuFeatureEntry
;
262 BOOLEAN FeatureExist
;
264 BitMaskSize
= PcdGetSize (PcdCpuFeaturesSupport
);
265 CpuFeaturesData
= GetCpuFeaturesData ();
266 if (CpuFeaturesData
->FeaturesCount
== 0) {
267 InitializeListHead (&CpuFeaturesData
->FeatureList
);
268 InitializeSpinLock (&CpuFeaturesData
->MsrLock
);
269 InitializeSpinLock (&CpuFeaturesData
->MemoryMappedLock
);
270 CpuFeaturesData
->BitMaskSize
= (UINT32
) BitMaskSize
;
272 ASSERT (CpuFeaturesData
->BitMaskSize
== BitMaskSize
);
274 FeatureExist
= FALSE
;
275 CpuFeatureEntry
= NULL
;
276 Entry
= GetFirstNode (&CpuFeaturesData
->FeatureList
);
277 while (!IsNull (&CpuFeaturesData
->FeatureList
, Entry
)) {
278 CpuFeatureEntry
= CPU_FEATURE_ENTRY_FROM_LINK (Entry
);
279 if (IsCpuFeatureMatch (CpuFeature
->FeatureMask
, CpuFeatureEntry
->FeatureMask
)) {
281 // If this feature already registered
286 Entry
= Entry
->ForwardLink
;
290 DEBUG ((DEBUG_INFO
, "[NEW] "));
291 DumpCpuFeature (CpuFeature
);
292 InsertTailList (&CpuFeaturesData
->FeatureList
, &CpuFeature
->Link
);
293 CpuFeaturesData
->FeaturesCount
++;
295 DEBUG ((DEBUG_INFO
, "[OVERRIDE] "));
296 DumpCpuFeature (CpuFeature
);
297 ASSERT (CpuFeatureEntry
!= NULL
);
299 // Overwrite original parameters of CPU feature
301 if (CpuFeature
->GetConfigDataFunc
!= NULL
) {
302 CpuFeatureEntry
->GetConfigDataFunc
= CpuFeature
->GetConfigDataFunc
;
304 if (CpuFeature
->SupportFunc
!= NULL
) {
305 CpuFeatureEntry
->SupportFunc
= CpuFeature
->SupportFunc
;
307 if (CpuFeature
->InitializeFunc
!= NULL
) {
308 CpuFeatureEntry
->InitializeFunc
= CpuFeature
->InitializeFunc
;
310 if (CpuFeature
->FeatureName
!= NULL
) {
311 if (CpuFeatureEntry
->FeatureName
== NULL
) {
312 CpuFeatureEntry
->FeatureName
= AllocatePool (CPU_FEATURE_NAME_SIZE
);
313 ASSERT (CpuFeatureEntry
->FeatureName
!= NULL
);
315 Status
= AsciiStrCpyS (CpuFeatureEntry
->FeatureName
, CPU_FEATURE_NAME_SIZE
, CpuFeature
->FeatureName
);
316 ASSERT_EFI_ERROR (Status
);
317 FreePool (CpuFeature
->FeatureName
);
319 if (CpuFeature
->BeforeFeatureBitMask
!= NULL
) {
320 if (CpuFeatureEntry
->BeforeFeatureBitMask
!= NULL
) {
321 FreePool (CpuFeatureEntry
->BeforeFeatureBitMask
);
323 CpuFeatureEntry
->BeforeFeatureBitMask
= CpuFeature
->BeforeFeatureBitMask
;
325 if (CpuFeature
->AfterFeatureBitMask
!= NULL
) {
326 if (CpuFeatureEntry
->AfterFeatureBitMask
!= NULL
) {
327 FreePool (CpuFeatureEntry
->AfterFeatureBitMask
);
329 CpuFeatureEntry
->AfterFeatureBitMask
= CpuFeature
->AfterFeatureBitMask
;
331 CpuFeatureEntry
->BeforeAll
= CpuFeature
->BeforeAll
;
332 CpuFeatureEntry
->AfterAll
= CpuFeature
->AfterAll
;
334 FreePool (CpuFeature
->FeatureMask
);
335 FreePool (CpuFeature
);
338 // Verify CPU features dependency can change CPU feature order
340 CheckCpuFeaturesDependency (&CpuFeaturesData
->FeatureList
);
341 return RETURN_SUCCESS
;
345 Sets CPU feature bit mask in CPU feature bit mask buffer.
347 @param[in] FeaturesBitMask Pointer to CPU feature bit mask buffer
348 @param[in] Feature The bit number of the CPU feature
349 @param[in] BitMaskSize CPU feature bit mask buffer size
352 SetCpuFeaturesBitMask (
353 IN UINT8
**FeaturesBitMask
,
358 UINT8
*CpuFeaturesBitMask
;
360 ASSERT (FeaturesBitMask
!= NULL
);
361 CpuFeaturesBitMask
= *FeaturesBitMask
;
362 if (CpuFeaturesBitMask
== NULL
) {
363 CpuFeaturesBitMask
= AllocateZeroPool (BitMaskSize
);
364 ASSERT (CpuFeaturesBitMask
!= NULL
);
365 *FeaturesBitMask
= CpuFeaturesBitMask
;
368 CpuFeaturesBitMask
+= (Feature
/ 8);
369 *CpuFeaturesBitMask
|= (UINT8
) (1 << (Feature
% 8));
373 Registers a CPU Feature.
375 @param[in] FeatureName A Null-terminated Ascii string indicates CPU feature
377 @param[in] GetConfigDataFunc CPU feature get configuration data function. This
378 is an optional parameter that may be NULL. If NULL,
379 then the most recently registered function for the
380 CPU feature is used. If no functions are registered
381 for a CPU feature, then the CPU configuration data
382 for the registered feature is NULL.
383 @param[in] SupportFunc CPU feature support function. This is an optional
384 parameter that may be NULL. If NULL, then the most
385 recently registered function for the CPU feature is
386 used. If no functions are registered for a CPU
387 feature, then the CPU feature is assumed to be
388 supported by all CPUs.
389 @param[in] InitializeFunc CPU feature initialize function. This is an optional
390 parameter that may be NULL. If NULL, then the most
391 recently registered function for the CPU feature is
392 used. If no functions are registered for a CPU
393 feature, then the CPU feature initialization is
395 @param[in] ... Variable argument list of UINT32 CPU feature value.
396 Values with no modifiers are the features provided
397 by the registered functions.
398 Values with CPU_FEATURE_BEFORE modifier are features
399 that must be initialized after the features provided
400 by the registered functions are used.
401 Values with CPU_FEATURE_AFTER modifier are features
402 that must be initialized before the features provided
403 by the registered functions are used.
404 The last argument in this variable argument list must
405 always be CPU_FEATURE_END.
407 @retval RETURN_SUCCESS The CPU feature was successfully registered.
408 @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
410 @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
411 supported due to a circular dependency between
412 BEFORE and AFTER features.
414 @note This service could be called by BSP only.
419 IN CHAR8
*FeatureName
, OPTIONAL
420 IN CPU_FEATURE_GET_CONFIG_DATA GetConfigDataFunc
, OPTIONAL
421 IN CPU_FEATURE_SUPPORT SupportFunc
, OPTIONAL
422 IN CPU_FEATURE_INITIALIZE InitializeFunc
, OPTIONAL
430 CPU_FEATURES_ENTRY
*CpuFeature
;
432 UINT8
*BeforeFeatureBitMask
;
433 UINT8
*AfterFeatureBitMask
;
438 BeforeFeatureBitMask
= NULL
;
439 AfterFeatureBitMask
= NULL
;
443 BitMaskSize
= PcdGetSize (PcdCpuFeaturesSupport
);
445 VA_START (Marker
, InitializeFunc
);
446 Feature
= VA_ARG (Marker
, UINT32
);
447 while (Feature
!= CPU_FEATURE_END
) {
448 ASSERT ((Feature
& (CPU_FEATURE_BEFORE
| CPU_FEATURE_AFTER
))
449 != (CPU_FEATURE_BEFORE
| CPU_FEATURE_AFTER
));
450 ASSERT ((Feature
& (CPU_FEATURE_BEFORE_ALL
| CPU_FEATURE_AFTER_ALL
))
451 != (CPU_FEATURE_BEFORE_ALL
| CPU_FEATURE_AFTER_ALL
));
452 if (Feature
< CPU_FEATURE_BEFORE
) {
453 BeforeAll
= ((Feature
& CPU_FEATURE_BEFORE_ALL
) != 0) ? TRUE
: FALSE
;
454 AfterAll
= ((Feature
& CPU_FEATURE_AFTER_ALL
) != 0) ? TRUE
: FALSE
;
455 Feature
&= ~(CPU_FEATURE_BEFORE_ALL
| CPU_FEATURE_AFTER_ALL
);
456 ASSERT (FeatureMask
== NULL
);
457 SetCpuFeaturesBitMask (&FeatureMask
, Feature
, BitMaskSize
);
458 } else if ((Feature
& CPU_FEATURE_BEFORE
) != 0) {
459 SetCpuFeaturesBitMask (&BeforeFeatureBitMask
, Feature
& ~CPU_FEATURE_BEFORE
, BitMaskSize
);
460 } else if ((Feature
& CPU_FEATURE_AFTER
) != 0) {
461 SetCpuFeaturesBitMask (&AfterFeatureBitMask
, Feature
& ~CPU_FEATURE_AFTER
, BitMaskSize
);
463 Feature
= VA_ARG (Marker
, UINT32
);
467 CpuFeature
= AllocateZeroPool (sizeof (CPU_FEATURES_ENTRY
));
468 ASSERT (CpuFeature
!= NULL
);
469 CpuFeature
->Signature
= CPU_FEATURE_ENTRY_SIGNATURE
;
470 CpuFeature
->FeatureMask
= FeatureMask
;
471 CpuFeature
->BeforeFeatureBitMask
= BeforeFeatureBitMask
;
472 CpuFeature
->AfterFeatureBitMask
= AfterFeatureBitMask
;
473 CpuFeature
->BeforeAll
= BeforeAll
;
474 CpuFeature
->AfterAll
= AfterAll
;
475 CpuFeature
->GetConfigDataFunc
= GetConfigDataFunc
;
476 CpuFeature
->SupportFunc
= SupportFunc
;
477 CpuFeature
->InitializeFunc
= InitializeFunc
;
478 if (FeatureName
!= NULL
) {
479 CpuFeature
->FeatureName
= AllocatePool (CPU_FEATURE_NAME_SIZE
);
480 ASSERT (CpuFeature
->FeatureName
!= NULL
);
481 Status
= AsciiStrCpyS (CpuFeature
->FeatureName
, CPU_FEATURE_NAME_SIZE
, FeatureName
);
482 ASSERT_EFI_ERROR (Status
);
485 Status
= RegisterCpuFeatureWorker (CpuFeature
);
486 ASSERT_EFI_ERROR (Status
);
488 return RETURN_SUCCESS
;
492 Add an entry in specified register table.
494 This function adds an entry in specified register table, with given register type,
495 register index, bit section and value.
497 @param[in] PreSmmFlag If TRUE, entry will be added into PreSmm register table
498 If FALSE, entry will be added into register table
499 @param[in] ProcessorNumber The index of the CPU to add a register table entry
500 @param[in] RegisterType Type of the register to program
501 @param[in] Index Index of the register to program
502 @param[in] ValidBitStart Start of the bit section
503 @param[in] ValidBitLength Length of the bit section
504 @param[in] Value Value to write
507 CpuRegisterTableWriteWorker (
508 IN BOOLEAN PreSmmFlag
,
509 IN UINTN ProcessorNumber
,
510 IN REGISTER_TYPE RegisterType
,
512 IN UINT8 ValidBitStart
,
513 IN UINT8 ValidBitLength
,
518 CPU_FEATURES_DATA
*CpuFeaturesData
;
519 ACPI_CPU_DATA
*AcpiCpuData
;
520 CPU_REGISTER_TABLE
*RegisterTable
;
521 CPU_REGISTER_TABLE_ENTRY
*RegisterTableEntry
;
523 CpuFeaturesData
= GetCpuFeaturesData ();
524 if (CpuFeaturesData
->RegisterTable
== NULL
) {
525 AcpiCpuData
= (ACPI_CPU_DATA
*) (UINTN
) PcdGet64 (PcdCpuS3DataAddress
);
526 if (AcpiCpuData
== NULL
) {
527 AcpiCpuData
= AllocateAcpiCpuData ();
528 ASSERT (AcpiCpuData
!= NULL
);
530 // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure
532 Status
= PcdSet64S (PcdCpuS3DataAddress
, (UINT64
)(UINTN
)AcpiCpuData
);
533 ASSERT_EFI_ERROR (Status
);
535 ASSERT (AcpiCpuData
->RegisterTable
!= 0);
536 CpuFeaturesData
->RegisterTable
= (CPU_REGISTER_TABLE
*) (UINTN
) AcpiCpuData
->RegisterTable
;
537 CpuFeaturesData
->PreSmmRegisterTable
= (CPU_REGISTER_TABLE
*) (UINTN
) AcpiCpuData
->PreSmmInitRegisterTable
;
541 RegisterTable
= &CpuFeaturesData
->PreSmmRegisterTable
[ProcessorNumber
];
543 RegisterTable
= &CpuFeaturesData
->RegisterTable
[ProcessorNumber
];
546 if (RegisterTable
->TableLength
== RegisterTable
->AllocatedSize
/ sizeof (CPU_REGISTER_TABLE_ENTRY
)) {
547 EnlargeRegisterTable (RegisterTable
);
551 // Append entry in the register table.
553 RegisterTableEntry
= (CPU_REGISTER_TABLE_ENTRY
*) (UINTN
) RegisterTable
->RegisterTableEntry
;
554 RegisterTableEntry
[RegisterTable
->TableLength
].RegisterType
= RegisterType
;
555 RegisterTableEntry
[RegisterTable
->TableLength
].Index
= (UINT32
) Index
;
556 RegisterTableEntry
[RegisterTable
->TableLength
].HighIndex
= (UINT32
) RShiftU64 (Index
, 32);
557 RegisterTableEntry
[RegisterTable
->TableLength
].ValidBitStart
= ValidBitStart
;
558 RegisterTableEntry
[RegisterTable
->TableLength
].ValidBitLength
= ValidBitLength
;
559 RegisterTableEntry
[RegisterTable
->TableLength
].Value
= Value
;
561 RegisterTable
->TableLength
++;
565 Adds an entry in specified register table.
567 This function adds an entry in specified register table, with given register type,
568 register index, bit section and value.
570 @param[in] ProcessorNumber The index of the CPU to add a register table entry
571 @param[in] RegisterType Type of the register to program
572 @param[in] Index Index of the register to program
573 @param[in] ValueMask Mask of bits in register to write
574 @param[in] Value Value to write
576 @note This service could be called by BSP only.
580 CpuRegisterTableWrite (
581 IN UINTN ProcessorNumber
,
582 IN REGISTER_TYPE RegisterType
,
592 Start
= (UINT8
)LowBitSet64 (ValueMask
);
593 End
= (UINT8
)HighBitSet64 (ValueMask
);
594 Length
= End
- Start
+ 1;
595 CpuRegisterTableWriteWorker (FALSE
, ProcessorNumber
, RegisterType
, Index
, Start
, Length
, Value
);
599 Adds an entry in specified Pre-SMM register table.
601 This function adds an entry in specified register table, with given register type,
602 register index, bit section and value.
604 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
605 @param[in] RegisterType Type of the register to program
606 @param[in] Index Index of the register to program
607 @param[in] ValueMask Mask of bits in register to write
608 @param[in] Value Value to write
610 @note This service could be called by BSP only.
614 PreSmmCpuRegisterTableWrite (
615 IN UINTN ProcessorNumber
,
616 IN REGISTER_TYPE RegisterType
,
626 Start
= (UINT8
)LowBitSet64 (ValueMask
);
627 End
= (UINT8
)HighBitSet64 (ValueMask
);
628 Length
= End
- Start
+ 1;
629 CpuRegisterTableWriteWorker (TRUE
, ProcessorNumber
, RegisterType
, Index
, Start
, Length
, Value
);
633 Worker function to determine if a CPU feature is set in input CPU feature bit mask buffer.
635 @param[in] CpuBitMask CPU feature bit mask buffer
636 @param[in] CpuBitMaskSize The size of CPU feature bit mask buffer
637 @param[in] Feature The bit number of the CPU feature
639 @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
640 @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
644 IsCpuFeatureSetInCpuPcd (
645 IN UINT8
*CpuBitMask
,
646 IN UINTN CpuBitMaskSize
,
650 if ((Feature
>> 3) >= CpuBitMaskSize
) {
653 return ((*(CpuBitMask
+ (Feature
>> 3)) & (1 << (Feature
& 0x07))) != 0);
657 Determines if a CPU feature is enabled in PcdCpuFeaturesSupport bit mask.
658 If a CPU feature is disabled in PcdCpuFeaturesSupport then all the code/data
659 associated with that feature should be optimized away if compiler
660 optimizations are enabled.
662 @param[in] Feature The bit number of the CPU feature to check in the PCD
663 PcdCpuFeaturesSupport
665 @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
666 @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
668 @note This service could be called by BSP only.
672 IsCpuFeatureSupported (
676 return IsCpuFeatureSetInCpuPcd (
677 (UINT8
*)PcdGetPtr (PcdCpuFeaturesSupport
),
678 PcdGetSize (PcdCpuFeaturesSupport
),
684 Determines if a CPU feature is set in PcdCpuFeaturesSetting bit mask.
686 @param[in] Feature The bit number of the CPU feature to check in the PCD
687 PcdCpuFeaturesSetting
689 @retval TRUE The CPU feature is set in PcdCpuFeaturesSetting.
690 @retval FALSE The CPU feature is not set in PcdCpuFeaturesSetting.
692 @note This service could be called by BSP only.
696 IsCpuFeatureInSetting (
700 return IsCpuFeatureSetInCpuPcd (
701 (UINT8
*)PcdGetPtr (PcdCpuFeaturesSetting
),
702 PcdGetSize (PcdCpuFeaturesSetting
),
708 Determines if a CPU feature is set in PcdCpuFeaturesCapability bit mask.
710 @param[in] Feature The bit number of the CPU feature to check in the PCD
711 PcdCpuFeaturesCapability
713 @retval TRUE The CPU feature is set in PcdCpuFeaturesCapability.
714 @retval FALSE The CPU feature is not set in PcdCpuFeaturesCapability.
716 @note This service could be called by BSP only.
720 IsCpuFeatureCapability (
724 return IsCpuFeatureSetInCpuPcd (
725 (UINT8
*)PcdGetPtr (PcdCpuFeaturesCapability
),
726 PcdGetSize (PcdCpuFeaturesCapability
),
733 Determines if a CPU feature is set in PcdCpuFeaturesUserConfiguration bit mask.
735 @param[in] Feature The bit number of the CPU feature to check in the PCD
736 PcdCpuFeaturesUserConfiguration
738 @retval TRUE The CPU feature is set in PcdCpuFeaturesUserConfiguration.
739 @retval FALSE The CPU feature is not set in PcdCpuFeaturesUserConfiguration.
741 @note This service could be called by BSP only.
745 IsCpuFeatureUserConfiguration (
749 return IsCpuFeatureSetInCpuPcd (
750 (UINT8
*)PcdGetPtr (PcdCpuFeaturesUserConfiguration
),
751 PcdGetSize (PcdCpuFeaturesUserConfiguration
),
758 Switches to assigned BSP after CPU features initialization.
760 @param[in] ProcessorNumber The index of the CPU executing this function.
762 @note This service could be called by BSP only.
766 SwitchBspAfterFeaturesInitialize (
767 IN UINTN ProcessorNumber
770 CPU_FEATURES_DATA
*CpuFeaturesData
;
772 CpuFeaturesData
= GetCpuFeaturesData ();
773 CpuFeaturesData
->BspNumber
= ProcessorNumber
;