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-rw-r--r--UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c1550
1 files changed, 775 insertions, 775 deletions
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
index 7ef0155374..338f1a495c 100644
--- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
+++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
@@ -1,775 +1,775 @@
-/** @file
- CPU Register Table Library functions.
-
- 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 "RegisterCpuFeatures.h"
-
-/**
- Checks if two CPU feature bit masks are equal.
-
- @param[in] FirstFeatureMask The first input CPU feature bit mask
- @param[in] SecondFeatureMask The second input CPU feature bit mask
-
- @retval TRUE Two CPU feature bit masks are equal.
- @retval FALSE Two CPU feature bit masks are not equal.
-**/
-BOOLEAN
-IsCpuFeatureMatch (
- IN UINT8 *FirstFeatureMask,
- IN UINT8 *SecondFeatureMask
- )
-{
- UINT32 BitMaskSize;
-
- BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
- if (CompareMem (FirstFeatureMask, SecondFeatureMask, BitMaskSize) == 0) {
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-/**
- Function that uses DEBUG() macros to display the contents of a a CPU feature bit mask.
-
- @param[in] FeatureMask A pointer to the CPU feature bit mask.
-**/
-VOID
-DumpCpuFeatureMask (
- IN UINT8 *FeatureMask
- )
-{
- UINTN Index;
- UINT8 *Data8;
- UINT32 BitMaskSize;
-
- BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
- Data8 = (UINT8 *) FeatureMask;
- for (Index = 0; Index < BitMaskSize; Index++) {
- DEBUG ((DEBUG_INFO, " %02x ", *Data8++));
- }
- DEBUG ((DEBUG_INFO, "\n"));
-}
-
-/**
- Dump CPU feature name or CPU feature bit mask.
-
- @param[in] CpuFeature Pointer to CPU_FEATURES_ENTRY
-**/
-VOID
-DumpCpuFeature (
- IN CPU_FEATURES_ENTRY *CpuFeature
- )
-{
-
- if (CpuFeature->FeatureName != NULL) {
- DEBUG ((DEBUG_INFO, "FeatureName: %a\n", CpuFeature->FeatureName));
- } else {
- DEBUG ((DEBUG_INFO, "FeatureMask = "));
- DumpCpuFeatureMask (CpuFeature->FeatureMask);
- }
-}
-
-/**
- Determines if the feature bit mask is in dependent CPU feature bit mask buffer.
-
- @param[in] FeatureMask Pointer to CPU feature bit mask
- @param[in] DependentBitMask Pointer to dependent CPU feature bit mask buffer
-
- @retval TRUE The feature bit mask is in dependent CPU feature bit mask buffer.
- @retval FALSE The feature bit mask is not in dependent CPU feature bit mask buffer.
-**/
-BOOLEAN
-IsBitMaskMatchCheck (
- IN UINT8 *FeatureMask,
- IN UINT8 *DependentBitMask
- )
-{
- UINTN Index;
- UINTN BitMaskSize;
- UINT8 *Data1;
- UINT8 *Data2;
-
- BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
-
- Data1 = FeatureMask;
- Data2 = DependentBitMask;
- for (Index = 0; Index < BitMaskSize; Index++) {
- if (((*(Data1++)) & (*(Data2++))) != 0) {
- return TRUE;
- }
- }
- return FALSE;
-}
-
-/**
- Checks and adjusts CPU features order per dependency relationship.
-
- @param[in] FeatureList Pointer to CPU feature list
-**/
-VOID
-CheckCpuFeaturesDependency (
- IN LIST_ENTRY *FeatureList
- )
-{
- LIST_ENTRY *CurrentEntry;
- CPU_FEATURES_ENTRY *CpuFeature;
- LIST_ENTRY *CheckEntry;
- CPU_FEATURES_ENTRY *CheckFeature;
- BOOLEAN Swapped;
- LIST_ENTRY *TempEntry;
-
- CurrentEntry = GetFirstNode (FeatureList);
- while (!IsNull (FeatureList, CurrentEntry)) {
- Swapped = FALSE;
- CpuFeature = CPU_FEATURE_ENTRY_FROM_LINK (CurrentEntry);
- if (CpuFeature->BeforeAll) {
- //
- // Check all features dispatched before this entry
- //
- CheckEntry = GetFirstNode (FeatureList);
- while (CheckEntry != CurrentEntry) {
- CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
- if (!CheckFeature->BeforeAll) {
- //
- // If this feature has no BeforeAll flag and is dispatched before CpuFeature,
- // insert currentEntry before Checked feature
- //
- RemoveEntryList (CurrentEntry);
- InsertTailList (CheckEntry, CurrentEntry);
- Swapped = TRUE;
- break;
- }
- CheckEntry = CheckEntry->ForwardLink;
- }
- if (Swapped) {
- continue;
- }
- }
-
- if (CpuFeature->AfterAll) {
- //
- // Check all features dispatched after this entry
- //
- CheckEntry = GetNextNode (FeatureList, CurrentEntry);
- while (!IsNull (FeatureList, CheckEntry)) {
- CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
- if (!CheckFeature->AfterAll) {
- //
- // If this feature has no AfterAll flag and is dispatched after CpuFeature,
- // insert currentEntry after Checked feature
- //
- TempEntry = GetNextNode (FeatureList, CurrentEntry);
- RemoveEntryList (CurrentEntry);
- InsertHeadList (CheckEntry, CurrentEntry);
- CurrentEntry = TempEntry;
- Swapped = TRUE;
- break;
- }
- CheckEntry = CheckEntry->ForwardLink;
- }
- if (Swapped) {
- continue;
- }
- }
-
- if (CpuFeature->BeforeFeatureBitMask != NULL) {
- //
- // Check all features dispatched before this entry
- //
- CheckEntry = GetFirstNode (FeatureList);
- while (CheckEntry != CurrentEntry) {
- CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
- if (IsBitMaskMatchCheck (CheckFeature->FeatureMask, CpuFeature->BeforeFeatureBitMask)) {
- //
- // If there is dependency, swap them
- //
- RemoveEntryList (CurrentEntry);
- InsertTailList (CheckEntry, CurrentEntry);
- Swapped = TRUE;
- break;
- }
- CheckEntry = CheckEntry->ForwardLink;
- }
- if (Swapped) {
- continue;
- }
- }
-
- if (CpuFeature->AfterFeatureBitMask != NULL) {
- //
- // Check all features dispatched after this entry
- //
- CheckEntry = GetNextNode (FeatureList, CurrentEntry);
- while (!IsNull (FeatureList, CheckEntry)) {
- CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
- if (IsBitMaskMatchCheck (CheckFeature->FeatureMask, CpuFeature->AfterFeatureBitMask)) {
- //
- // If there is dependency, swap them
- //
- TempEntry = GetNextNode (FeatureList, CurrentEntry);
- RemoveEntryList (CurrentEntry);
- InsertHeadList (CheckEntry, CurrentEntry);
- CurrentEntry = TempEntry;
- Swapped = TRUE;
- break;
- }
- CheckEntry = CheckEntry->ForwardLink;
- }
- if (Swapped) {
- continue;
- }
- }
- //
- // No swap happened, check the next feature
- //
- CurrentEntry = CurrentEntry->ForwardLink;
- }
-}
-
-/**
- Worker function to register CPU Feature.
-
- @param[in] CpuFeature Pointer to CPU feature entry
-
- @retval RETURN_SUCCESS The CPU feature was successfully registered.
- @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
- the CPU feature.
- @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
- supported due to a circular dependency between
- BEFORE and AFTER features.
-**/
-RETURN_STATUS
-RegisterCpuFeatureWorker (
- IN CPU_FEATURES_ENTRY *CpuFeature
- )
-{
- EFI_STATUS Status;
- CPU_FEATURES_DATA *CpuFeaturesData;
- CPU_FEATURES_ENTRY *CpuFeatureEntry;
- LIST_ENTRY *Entry;
- UINT32 BitMaskSize;
- BOOLEAN FeatureExist;
-
- BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
- CpuFeaturesData = GetCpuFeaturesData ();
- if (CpuFeaturesData->FeaturesCount == 0) {
- InitializeListHead (&CpuFeaturesData->FeatureList);
- InitializeSpinLock (&CpuFeaturesData->MsrLock);
- InitializeSpinLock (&CpuFeaturesData->MemoryMappedLock);
- CpuFeaturesData->BitMaskSize = BitMaskSize;
- }
- ASSERT (CpuFeaturesData->BitMaskSize == BitMaskSize);
-
- FeatureExist = FALSE;
- CpuFeatureEntry = NULL;
- Entry = GetFirstNode (&CpuFeaturesData->FeatureList);
- while (!IsNull (&CpuFeaturesData->FeatureList, Entry)) {
- CpuFeatureEntry = CPU_FEATURE_ENTRY_FROM_LINK (Entry);
- if (IsCpuFeatureMatch (CpuFeature->FeatureMask, CpuFeatureEntry->FeatureMask)) {
- //
- // If this feature already registered
- //
- FeatureExist = TRUE;
- break;
- }
- Entry = Entry->ForwardLink;
- }
-
- if (!FeatureExist) {
- DEBUG ((DEBUG_INFO, "[NEW] "));
- DumpCpuFeature (CpuFeature);
- InsertTailList (&CpuFeaturesData->FeatureList, &CpuFeature->Link);
- CpuFeaturesData->FeaturesCount++;
- } else {
- DEBUG ((DEBUG_INFO, "[OVERRIDE] "));
- DumpCpuFeature (CpuFeature);
- ASSERT (CpuFeatureEntry != NULL);
- //
- // Overwrite original parameters of CPU feature
- //
- if (CpuFeature->GetConfigDataFunc != NULL) {
- CpuFeatureEntry->GetConfigDataFunc = CpuFeature->GetConfigDataFunc;
- }
- if (CpuFeature->SupportFunc != NULL) {
- CpuFeatureEntry->SupportFunc = CpuFeature->SupportFunc;
- }
- if (CpuFeature->InitializeFunc != NULL) {
- CpuFeatureEntry->InitializeFunc = CpuFeature->InitializeFunc;
- }
- if (CpuFeature->FeatureName != NULL) {
- if (CpuFeatureEntry->FeatureName == NULL) {
- CpuFeatureEntry->FeatureName = AllocatePool (CPU_FEATURE_NAME_SIZE);
- ASSERT (CpuFeatureEntry->FeatureName != NULL);
- }
- Status = AsciiStrCpyS (CpuFeatureEntry->FeatureName, CPU_FEATURE_NAME_SIZE, CpuFeature->FeatureName);
- ASSERT_EFI_ERROR (Status);
- FreePool (CpuFeature->FeatureName);
- }
- if (CpuFeature->BeforeFeatureBitMask != NULL) {
- if (CpuFeatureEntry->BeforeFeatureBitMask != NULL) {
- FreePool (CpuFeatureEntry->BeforeFeatureBitMask);
- }
- CpuFeatureEntry->BeforeFeatureBitMask = CpuFeature->BeforeFeatureBitMask;
- }
- if (CpuFeature->AfterFeatureBitMask != NULL) {
- if (CpuFeatureEntry->AfterFeatureBitMask != NULL) {
- FreePool (CpuFeatureEntry->AfterFeatureBitMask);
- }
- CpuFeatureEntry->AfterFeatureBitMask = CpuFeature->AfterFeatureBitMask;
- }
- CpuFeatureEntry->BeforeAll = CpuFeature->BeforeAll;
- CpuFeatureEntry->AfterAll = CpuFeature->AfterAll;
-
- FreePool (CpuFeature->FeatureMask);
- FreePool (CpuFeature);
- }
- //
- // Verify CPU features dependency can change CPU feature order
- //
- CheckCpuFeaturesDependency (&CpuFeaturesData->FeatureList);
- return RETURN_SUCCESS;
-}
-
-/**
- Sets CPU feature bit mask in CPU feature bit mask buffer.
-
- @param[in] FeaturesBitMask Pointer to CPU feature bit mask buffer
- @param[in] Feature The bit number of the CPU feature
- @param[in] BitMaskSize CPU feature bit mask buffer size
-**/
-VOID
-SetCpuFeaturesBitMask (
- IN UINT8 **FeaturesBitMask,
- IN UINT32 Feature,
- IN UINTN BitMaskSize
- )
-{
- UINT8 *CpuFeaturesBitMask;
-
- ASSERT (FeaturesBitMask != NULL);
- CpuFeaturesBitMask = *FeaturesBitMask;
- if (CpuFeaturesBitMask == NULL) {
- CpuFeaturesBitMask = AllocateZeroPool (BitMaskSize);
- ASSERT (CpuFeaturesBitMask != NULL);
- *FeaturesBitMask = CpuFeaturesBitMask;
- }
-
- CpuFeaturesBitMask += (Feature / 8);
- *CpuFeaturesBitMask |= (UINT8) (1 << (Feature % 8));
-}
-
-/**
- Registers a CPU Feature.
-
- @param[in] FeatureName A Null-terminated Ascii string indicates CPU feature
- name.
- @param[in] GetConfigDataFunc CPU feature get configuration data function. This
- is an optional parameter that may be NULL. If NULL,
- then the most recently registered function for the
- CPU feature is used. If no functions are registered
- for a CPU feature, then the CPU configuration data
- for the registered feature is NULL.
- @param[in] SupportFunc CPU feature support function. This is an optional
- parameter that may be NULL. If NULL, then the most
- recently registered function for the CPU feature is
- used. If no functions are registered for a CPU
- feature, then the CPU feature is assumed to be
- supported by all CPUs.
- @param[in] InitializeFunc CPU feature initialize function. This is an optional
- parameter that may be NULL. If NULL, then the most
- recently registered function for the CPU feature is
- used. If no functions are registered for a CPU
- feature, then the CPU feature initialization is
- skipped.
- @param[in] ... Variable argument list of UINT32 CPU feature value.
- Values with no modifiers are the features provided
- by the registered functions.
- Values with CPU_FEATURE_BEFORE modifier are features
- that must be initialized after the features provided
- by the registered functions are used.
- Values with CPU_FEATURE_AFTER modifier are features
- that must be initialized before the features provided
- by the registered functions are used.
- The last argument in this variable argument list must
- always be CPU_FEATURE_END.
-
- @retval RETURN_SUCCESS The CPU feature was successfully registered.
- @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
- the CPU feature.
- @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
- supported due to a circular dependency between
- BEFORE and AFTER features.
-
- @note This service could be called by BSP only.
-**/
-RETURN_STATUS
-EFIAPI
-RegisterCpuFeature (
- IN CHAR8 *FeatureName, OPTIONAL
- IN CPU_FEATURE_GET_CONFIG_DATA GetConfigDataFunc, OPTIONAL
- IN CPU_FEATURE_SUPPORT SupportFunc, OPTIONAL
- IN CPU_FEATURE_INITIALIZE InitializeFunc, OPTIONAL
- ...
- )
-{
- EFI_STATUS Status;
- VA_LIST Marker;
- UINT32 Feature;
- UINTN BitMaskSize;
- CPU_FEATURES_ENTRY *CpuFeature;
- UINT8 *FeatureMask;
- UINT8 *BeforeFeatureBitMask;
- UINT8 *AfterFeatureBitMask;
- BOOLEAN BeforeAll;
- BOOLEAN AfterAll;
-
- FeatureMask = NULL;
- BeforeFeatureBitMask = NULL;
- AfterFeatureBitMask = NULL;
- BeforeAll = FALSE;
- AfterAll = FALSE;
-
- BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
-
- VA_START (Marker, InitializeFunc);
- Feature = VA_ARG (Marker, UINT32);
- while (Feature != CPU_FEATURE_END) {
- ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER))
- != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER));
- ASSERT ((Feature & (CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL))
- != (CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL));
- if (Feature < CPU_FEATURE_BEFORE) {
- BeforeAll = ((Feature & CPU_FEATURE_BEFORE_ALL) != 0) ? TRUE : FALSE;
- AfterAll = ((Feature & CPU_FEATURE_AFTER_ALL) != 0) ? TRUE : FALSE;
- Feature &= ~(CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL);
- ASSERT (FeatureMask == NULL);
- SetCpuFeaturesBitMask (&FeatureMask, Feature, BitMaskSize);
- } else if ((Feature & CPU_FEATURE_BEFORE) != 0) {
- SetCpuFeaturesBitMask (&BeforeFeatureBitMask, Feature & ~CPU_FEATURE_BEFORE, BitMaskSize);
- } else if ((Feature & CPU_FEATURE_AFTER) != 0) {
- SetCpuFeaturesBitMask (&AfterFeatureBitMask, Feature & ~CPU_FEATURE_AFTER, BitMaskSize);
- }
- Feature = VA_ARG (Marker, UINT32);
- }
- VA_END (Marker);
-
- CpuFeature = AllocateZeroPool (sizeof (CPU_FEATURES_ENTRY));
- ASSERT (CpuFeature != NULL);
- CpuFeature->Signature = CPU_FEATURE_ENTRY_SIGNATURE;
- CpuFeature->FeatureMask = FeatureMask;
- CpuFeature->BeforeFeatureBitMask = BeforeFeatureBitMask;
- CpuFeature->AfterFeatureBitMask = AfterFeatureBitMask;
- CpuFeature->BeforeAll = BeforeAll;
- CpuFeature->AfterAll = AfterAll;
- CpuFeature->GetConfigDataFunc = GetConfigDataFunc;
- CpuFeature->SupportFunc = SupportFunc;
- CpuFeature->InitializeFunc = InitializeFunc;
- if (FeatureName != NULL) {
- CpuFeature->FeatureName = AllocatePool (CPU_FEATURE_NAME_SIZE);
- ASSERT (CpuFeature->FeatureName != NULL);
- Status = AsciiStrCpyS (CpuFeature->FeatureName, CPU_FEATURE_NAME_SIZE, FeatureName);
- ASSERT_EFI_ERROR (Status);
- }
-
- Status = RegisterCpuFeatureWorker (CpuFeature);
- ASSERT_EFI_ERROR (Status);
-
- return RETURN_SUCCESS;
-}
-
-/**
- Add an entry in specified register table.
-
- This function adds an entry in specified register table, with given register type,
- register index, bit section and value.
-
- @param[in] PreSmmFlag If TRUE, entry will be added into PreSmm register table
- If FALSE, entry will be added into register table
- @param[in] ProcessorNumber The index of the CPU to add a register table entry
- @param[in] RegisterType Type of the register to program
- @param[in] Index Index of the register to program
- @param[in] ValidBitStart Start of the bit section
- @param[in] ValidBitLength Length of the bit section
- @param[in] Value Value to write
-**/
-VOID
-CpuRegisterTableWriteWorker (
- IN BOOLEAN PreSmmFlag,
- IN UINTN ProcessorNumber,
- IN REGISTER_TYPE RegisterType,
- IN UINT64 Index,
- IN UINT8 ValidBitStart,
- IN UINT8 ValidBitLength,
- IN UINT64 Value
- )
-{
- EFI_STATUS Status;
- CPU_FEATURES_DATA *CpuFeaturesData;
- ACPI_CPU_DATA *AcpiCpuData;
- CPU_REGISTER_TABLE *RegisterTable;
- CPU_REGISTER_TABLE_ENTRY *RegisterTableEntry;
-
- CpuFeaturesData = GetCpuFeaturesData ();
- if (CpuFeaturesData->RegisterTable == NULL) {
- AcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);
- if (AcpiCpuData == NULL) {
- AcpiCpuData = AllocateAcpiCpuData ();
- ASSERT (AcpiCpuData != NULL);
- //
- // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure
- //
- Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);
- ASSERT_EFI_ERROR (Status);
- }
- ASSERT (AcpiCpuData->RegisterTable != 0);
- CpuFeaturesData->RegisterTable = (CPU_REGISTER_TABLE *) (UINTN) AcpiCpuData->RegisterTable;
- CpuFeaturesData->PreSmmRegisterTable = (CPU_REGISTER_TABLE *) (UINTN) AcpiCpuData->PreSmmInitRegisterTable;
- }
-
- if (PreSmmFlag) {
- RegisterTable = &CpuFeaturesData->PreSmmRegisterTable[ProcessorNumber];
- } else {
- RegisterTable = &CpuFeaturesData->RegisterTable[ProcessorNumber];
- }
-
- if (RegisterTable->TableLength == RegisterTable->AllocatedSize / sizeof (CPU_REGISTER_TABLE_ENTRY)) {
- EnlargeRegisterTable (RegisterTable);
- }
-
- //
- // Append entry in the register table.
- //
- RegisterTableEntry = (CPU_REGISTER_TABLE_ENTRY *) (UINTN) RegisterTable->RegisterTableEntry;
- RegisterTableEntry[RegisterTable->TableLength].RegisterType = RegisterType;
- RegisterTableEntry[RegisterTable->TableLength].Index = (UINT32) Index;
- RegisterTableEntry[RegisterTable->TableLength].HighIndex = (UINT32) RShiftU64 (Index, 32);
- RegisterTableEntry[RegisterTable->TableLength].ValidBitStart = ValidBitStart;
- RegisterTableEntry[RegisterTable->TableLength].ValidBitLength = ValidBitLength;
- RegisterTableEntry[RegisterTable->TableLength].Value = Value;
-
- RegisterTable->TableLength++;
-}
-
-/**
- Adds an entry in specified register table.
-
- This function adds an entry in specified register table, with given register type,
- register index, bit section and value.
-
- @param[in] ProcessorNumber The index of the CPU to add a register table entry
- @param[in] RegisterType Type of the register to program
- @param[in] Index Index of the register to program
- @param[in] ValueMask Mask of bits in register to write
- @param[in] Value Value to write
-
- @note This service could be called by BSP only.
-**/
-VOID
-EFIAPI
-CpuRegisterTableWrite (
- IN UINTN ProcessorNumber,
- IN REGISTER_TYPE RegisterType,
- IN UINT64 Index,
- IN UINT64 ValueMask,
- IN UINT64 Value
- )
-{
- UINT8 Start;
- UINT8 End;
- UINT8 Length;
-
- Start = (UINT8)LowBitSet64 (ValueMask);
- End = (UINT8)HighBitSet64 (ValueMask);
- Length = End - Start + 1;
- CpuRegisterTableWriteWorker (FALSE, ProcessorNumber, RegisterType, Index, Start, Length, Value);
-}
-
-/**
- Adds an entry in specified Pre-SMM register table.
-
- This function adds an entry in specified register table, with given register type,
- register index, bit section and value.
-
- @param[in] ProcessorNumber The index of the CPU to add a register table entry.
- @param[in] RegisterType Type of the register to program
- @param[in] Index Index of the register to program
- @param[in] ValueMask Mask of bits in register to write
- @param[in] Value Value to write
-
- @note This service could be called by BSP only.
-**/
-VOID
-EFIAPI
-PreSmmCpuRegisterTableWrite (
- IN UINTN ProcessorNumber,
- IN REGISTER_TYPE RegisterType,
- IN UINT64 Index,
- IN UINT64 ValueMask,
- IN UINT64 Value
- )
-{
- UINT8 Start;
- UINT8 End;
- UINT8 Length;
-
- Start = (UINT8)LowBitSet64 (ValueMask);
- End = (UINT8)HighBitSet64 (ValueMask);
- Length = End - Start + 1;
- CpuRegisterTableWriteWorker (TRUE, ProcessorNumber, RegisterType, Index, Start, Length, Value);
-}
-
-/**
- Worker function to determine if a CPU feature is set in input CPU feature bit mask buffer.
-
- @param[in] CpuBitMask CPU feature bit mask buffer
- @param[in] CpuBitMaskSize The size of CPU feature bit mask buffer
- @param[in] Feature The bit number of the CPU feature
-
- @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
- @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
-
-**/
-BOOLEAN
-IsCpuFeatureSetInCpuPcd (
- IN UINT8 *CpuBitMask,
- IN UINTN CpuBitMaskSize,
- IN UINT32 Feature
- )
-{
- if ((Feature >> 3) >= CpuBitMaskSize) {
- return FALSE;
- }
- return ((*(CpuBitMask + (Feature >> 3)) & (1 << (Feature & 0x07))) != 0);
-}
-
-/**
- Determines if a CPU feature is enabled in PcdCpuFeaturesSupport bit mask.
- If a CPU feature is disabled in PcdCpuFeaturesSupport then all the code/data
- associated with that feature should be optimized away if compiler
- optimizations are enabled.
-
- @param[in] Feature The bit number of the CPU feature to check in the PCD
- PcdCpuFeaturesSupport
-
- @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
- @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
-
- @note This service could be called by BSP only.
-**/
-BOOLEAN
-EFIAPI
-IsCpuFeatureSupported (
- IN UINT32 Feature
- )
-{
- return IsCpuFeatureSetInCpuPcd (
- (UINT8 *)PcdGetPtr (PcdCpuFeaturesSupport),
- PcdGetSize (PcdCpuFeaturesSupport),
- Feature
- );
-}
-
-/**
- Determines if a CPU feature is set in PcdCpuFeaturesSetting bit mask.
-
- @param[in] Feature The bit number of the CPU feature to check in the PCD
- PcdCpuFeaturesSetting
-
- @retval TRUE The CPU feature is set in PcdCpuFeaturesSetting.
- @retval FALSE The CPU feature is not set in PcdCpuFeaturesSetting.
-
- @note This service could be called by BSP only.
-**/
-BOOLEAN
-EFIAPI
-IsCpuFeatureInSetting (
- IN UINT32 Feature
- )
-{
- return IsCpuFeatureSetInCpuPcd (
- (UINT8 *)PcdGetPtr (PcdCpuFeaturesSetting),
- PcdGetSize (PcdCpuFeaturesSetting),
- Feature
- );
-}
-
-/**
- Determines if a CPU feature is set in PcdCpuFeaturesCapability bit mask.
-
- @param[in] Feature The bit number of the CPU feature to check in the PCD
- PcdCpuFeaturesCapability
-
- @retval TRUE The CPU feature is set in PcdCpuFeaturesCapability.
- @retval FALSE The CPU feature is not set in PcdCpuFeaturesCapability.
-
- @note This service could be called by BSP only.
-**/
-BOOLEAN
-EFIAPI
-IsCpuFeatureCapability (
- IN UINT32 Feature
- )
-{
- return IsCpuFeatureSetInCpuPcd (
- (UINT8 *)PcdGetPtr (PcdCpuFeaturesCapability),
- PcdGetSize (PcdCpuFeaturesCapability),
- Feature
- );
-
-}
-
-/**
- Determines if a CPU feature is set in PcdCpuFeaturesUserConfiguration bit mask.
-
- @param[in] Feature The bit number of the CPU feature to check in the PCD
- PcdCpuFeaturesUserConfiguration
-
- @retval TRUE The CPU feature is set in PcdCpuFeaturesUserConfiguration.
- @retval FALSE The CPU feature is not set in PcdCpuFeaturesUserConfiguration.
-
- @note This service could be called by BSP only.
-**/
-BOOLEAN
-EFIAPI
-IsCpuFeatureUserConfiguration (
- IN UINT32 Feature
- )
-{
- return IsCpuFeatureSetInCpuPcd (
- (UINT8 *)PcdGetPtr (PcdCpuFeaturesUserConfiguration),
- PcdGetSize (PcdCpuFeaturesUserConfiguration),
- Feature
- );
-
-}
-
-/**
- Switches to assigned BSP after CPU features initialization.
-
- @param[in] ProcessorNumber The index of the CPU executing this function.
-
- @note This service could be called by BSP only.
-**/
-VOID
-EFIAPI
-SwitchBspAfterFeaturesInitialize (
- IN UINTN ProcessorNumber
- )
-{
- CPU_FEATURES_DATA *CpuFeaturesData;
-
- CpuFeaturesData = GetCpuFeaturesData ();
- CpuFeaturesData->BspNumber = ProcessorNumber;
-}
-
+/** @file
+ CPU Register Table Library functions.
+
+ 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 "RegisterCpuFeatures.h"
+
+/**
+ Checks if two CPU feature bit masks are equal.
+
+ @param[in] FirstFeatureMask The first input CPU feature bit mask
+ @param[in] SecondFeatureMask The second input CPU feature bit mask
+
+ @retval TRUE Two CPU feature bit masks are equal.
+ @retval FALSE Two CPU feature bit masks are not equal.
+**/
+BOOLEAN
+IsCpuFeatureMatch (
+ IN UINT8 *FirstFeatureMask,
+ IN UINT8 *SecondFeatureMask
+ )
+{
+ UINT32 BitMaskSize;
+
+ BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
+ if (CompareMem (FirstFeatureMask, SecondFeatureMask, BitMaskSize) == 0) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+/**
+ Function that uses DEBUG() macros to display the contents of a a CPU feature bit mask.
+
+ @param[in] FeatureMask A pointer to the CPU feature bit mask.
+**/
+VOID
+DumpCpuFeatureMask (
+ IN UINT8 *FeatureMask
+ )
+{
+ UINTN Index;
+ UINT8 *Data8;
+ UINT32 BitMaskSize;
+
+ BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
+ Data8 = (UINT8 *) FeatureMask;
+ for (Index = 0; Index < BitMaskSize; Index++) {
+ DEBUG ((DEBUG_INFO, " %02x ", *Data8++));
+ }
+ DEBUG ((DEBUG_INFO, "\n"));
+}
+
+/**
+ Dump CPU feature name or CPU feature bit mask.
+
+ @param[in] CpuFeature Pointer to CPU_FEATURES_ENTRY
+**/
+VOID
+DumpCpuFeature (
+ IN CPU_FEATURES_ENTRY *CpuFeature
+ )
+{
+
+ if (CpuFeature->FeatureName != NULL) {
+ DEBUG ((DEBUG_INFO, "FeatureName: %a\n", CpuFeature->FeatureName));
+ } else {
+ DEBUG ((DEBUG_INFO, "FeatureMask = "));
+ DumpCpuFeatureMask (CpuFeature->FeatureMask);
+ }
+}
+
+/**
+ Determines if the feature bit mask is in dependent CPU feature bit mask buffer.
+
+ @param[in] FeatureMask Pointer to CPU feature bit mask
+ @param[in] DependentBitMask Pointer to dependent CPU feature bit mask buffer
+
+ @retval TRUE The feature bit mask is in dependent CPU feature bit mask buffer.
+ @retval FALSE The feature bit mask is not in dependent CPU feature bit mask buffer.
+**/
+BOOLEAN
+IsBitMaskMatchCheck (
+ IN UINT8 *FeatureMask,
+ IN UINT8 *DependentBitMask
+ )
+{
+ UINTN Index;
+ UINTN BitMaskSize;
+ UINT8 *Data1;
+ UINT8 *Data2;
+
+ BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
+
+ Data1 = FeatureMask;
+ Data2 = DependentBitMask;
+ for (Index = 0; Index < BitMaskSize; Index++) {
+ if (((*(Data1++)) & (*(Data2++))) != 0) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/**
+ Checks and adjusts CPU features order per dependency relationship.
+
+ @param[in] FeatureList Pointer to CPU feature list
+**/
+VOID
+CheckCpuFeaturesDependency (
+ IN LIST_ENTRY *FeatureList
+ )
+{
+ LIST_ENTRY *CurrentEntry;
+ CPU_FEATURES_ENTRY *CpuFeature;
+ LIST_ENTRY *CheckEntry;
+ CPU_FEATURES_ENTRY *CheckFeature;
+ BOOLEAN Swapped;
+ LIST_ENTRY *TempEntry;
+
+ CurrentEntry = GetFirstNode (FeatureList);
+ while (!IsNull (FeatureList, CurrentEntry)) {
+ Swapped = FALSE;
+ CpuFeature = CPU_FEATURE_ENTRY_FROM_LINK (CurrentEntry);
+ if (CpuFeature->BeforeAll) {
+ //
+ // Check all features dispatched before this entry
+ //
+ CheckEntry = GetFirstNode (FeatureList);
+ while (CheckEntry != CurrentEntry) {
+ CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
+ if (!CheckFeature->BeforeAll) {
+ //
+ // If this feature has no BeforeAll flag and is dispatched before CpuFeature,
+ // insert currentEntry before Checked feature
+ //
+ RemoveEntryList (CurrentEntry);
+ InsertTailList (CheckEntry, CurrentEntry);
+ Swapped = TRUE;
+ break;
+ }
+ CheckEntry = CheckEntry->ForwardLink;
+ }
+ if (Swapped) {
+ continue;
+ }
+ }
+
+ if (CpuFeature->AfterAll) {
+ //
+ // Check all features dispatched after this entry
+ //
+ CheckEntry = GetNextNode (FeatureList, CurrentEntry);
+ while (!IsNull (FeatureList, CheckEntry)) {
+ CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
+ if (!CheckFeature->AfterAll) {
+ //
+ // If this feature has no AfterAll flag and is dispatched after CpuFeature,
+ // insert currentEntry after Checked feature
+ //
+ TempEntry = GetNextNode (FeatureList, CurrentEntry);
+ RemoveEntryList (CurrentEntry);
+ InsertHeadList (CheckEntry, CurrentEntry);
+ CurrentEntry = TempEntry;
+ Swapped = TRUE;
+ break;
+ }
+ CheckEntry = CheckEntry->ForwardLink;
+ }
+ if (Swapped) {
+ continue;
+ }
+ }
+
+ if (CpuFeature->BeforeFeatureBitMask != NULL) {
+ //
+ // Check all features dispatched before this entry
+ //
+ CheckEntry = GetFirstNode (FeatureList);
+ while (CheckEntry != CurrentEntry) {
+ CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
+ if (IsBitMaskMatchCheck (CheckFeature->FeatureMask, CpuFeature->BeforeFeatureBitMask)) {
+ //
+ // If there is dependency, swap them
+ //
+ RemoveEntryList (CurrentEntry);
+ InsertTailList (CheckEntry, CurrentEntry);
+ Swapped = TRUE;
+ break;
+ }
+ CheckEntry = CheckEntry->ForwardLink;
+ }
+ if (Swapped) {
+ continue;
+ }
+ }
+
+ if (CpuFeature->AfterFeatureBitMask != NULL) {
+ //
+ // Check all features dispatched after this entry
+ //
+ CheckEntry = GetNextNode (FeatureList, CurrentEntry);
+ while (!IsNull (FeatureList, CheckEntry)) {
+ CheckFeature = CPU_FEATURE_ENTRY_FROM_LINK (CheckEntry);
+ if (IsBitMaskMatchCheck (CheckFeature->FeatureMask, CpuFeature->AfterFeatureBitMask)) {
+ //
+ // If there is dependency, swap them
+ //
+ TempEntry = GetNextNode (FeatureList, CurrentEntry);
+ RemoveEntryList (CurrentEntry);
+ InsertHeadList (CheckEntry, CurrentEntry);
+ CurrentEntry = TempEntry;
+ Swapped = TRUE;
+ break;
+ }
+ CheckEntry = CheckEntry->ForwardLink;
+ }
+ if (Swapped) {
+ continue;
+ }
+ }
+ //
+ // No swap happened, check the next feature
+ //
+ CurrentEntry = CurrentEntry->ForwardLink;
+ }
+}
+
+/**
+ Worker function to register CPU Feature.
+
+ @param[in] CpuFeature Pointer to CPU feature entry
+
+ @retval RETURN_SUCCESS The CPU feature was successfully registered.
+ @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
+ the CPU feature.
+ @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
+ supported due to a circular dependency between
+ BEFORE and AFTER features.
+**/
+RETURN_STATUS
+RegisterCpuFeatureWorker (
+ IN CPU_FEATURES_ENTRY *CpuFeature
+ )
+{
+ EFI_STATUS Status;
+ CPU_FEATURES_DATA *CpuFeaturesData;
+ CPU_FEATURES_ENTRY *CpuFeatureEntry;
+ LIST_ENTRY *Entry;
+ UINT32 BitMaskSize;
+ BOOLEAN FeatureExist;
+
+ BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
+ CpuFeaturesData = GetCpuFeaturesData ();
+ if (CpuFeaturesData->FeaturesCount == 0) {
+ InitializeListHead (&CpuFeaturesData->FeatureList);
+ InitializeSpinLock (&CpuFeaturesData->MsrLock);
+ InitializeSpinLock (&CpuFeaturesData->MemoryMappedLock);
+ CpuFeaturesData->BitMaskSize = BitMaskSize;
+ }
+ ASSERT (CpuFeaturesData->BitMaskSize == BitMaskSize);
+
+ FeatureExist = FALSE;
+ CpuFeatureEntry = NULL;
+ Entry = GetFirstNode (&CpuFeaturesData->FeatureList);
+ while (!IsNull (&CpuFeaturesData->FeatureList, Entry)) {
+ CpuFeatureEntry = CPU_FEATURE_ENTRY_FROM_LINK (Entry);
+ if (IsCpuFeatureMatch (CpuFeature->FeatureMask, CpuFeatureEntry->FeatureMask)) {
+ //
+ // If this feature already registered
+ //
+ FeatureExist = TRUE;
+ break;
+ }
+ Entry = Entry->ForwardLink;
+ }
+
+ if (!FeatureExist) {
+ DEBUG ((DEBUG_INFO, "[NEW] "));
+ DumpCpuFeature (CpuFeature);
+ InsertTailList (&CpuFeaturesData->FeatureList, &CpuFeature->Link);
+ CpuFeaturesData->FeaturesCount++;
+ } else {
+ DEBUG ((DEBUG_INFO, "[OVERRIDE] "));
+ DumpCpuFeature (CpuFeature);
+ ASSERT (CpuFeatureEntry != NULL);
+ //
+ // Overwrite original parameters of CPU feature
+ //
+ if (CpuFeature->GetConfigDataFunc != NULL) {
+ CpuFeatureEntry->GetConfigDataFunc = CpuFeature->GetConfigDataFunc;
+ }
+ if (CpuFeature->SupportFunc != NULL) {
+ CpuFeatureEntry->SupportFunc = CpuFeature->SupportFunc;
+ }
+ if (CpuFeature->InitializeFunc != NULL) {
+ CpuFeatureEntry->InitializeFunc = CpuFeature->InitializeFunc;
+ }
+ if (CpuFeature->FeatureName != NULL) {
+ if (CpuFeatureEntry->FeatureName == NULL) {
+ CpuFeatureEntry->FeatureName = AllocatePool (CPU_FEATURE_NAME_SIZE);
+ ASSERT (CpuFeatureEntry->FeatureName != NULL);
+ }
+ Status = AsciiStrCpyS (CpuFeatureEntry->FeatureName, CPU_FEATURE_NAME_SIZE, CpuFeature->FeatureName);
+ ASSERT_EFI_ERROR (Status);
+ FreePool (CpuFeature->FeatureName);
+ }
+ if (CpuFeature->BeforeFeatureBitMask != NULL) {
+ if (CpuFeatureEntry->BeforeFeatureBitMask != NULL) {
+ FreePool (CpuFeatureEntry->BeforeFeatureBitMask);
+ }
+ CpuFeatureEntry->BeforeFeatureBitMask = CpuFeature->BeforeFeatureBitMask;
+ }
+ if (CpuFeature->AfterFeatureBitMask != NULL) {
+ if (CpuFeatureEntry->AfterFeatureBitMask != NULL) {
+ FreePool (CpuFeatureEntry->AfterFeatureBitMask);
+ }
+ CpuFeatureEntry->AfterFeatureBitMask = CpuFeature->AfterFeatureBitMask;
+ }
+ CpuFeatureEntry->BeforeAll = CpuFeature->BeforeAll;
+ CpuFeatureEntry->AfterAll = CpuFeature->AfterAll;
+
+ FreePool (CpuFeature->FeatureMask);
+ FreePool (CpuFeature);
+ }
+ //
+ // Verify CPU features dependency can change CPU feature order
+ //
+ CheckCpuFeaturesDependency (&CpuFeaturesData->FeatureList);
+ return RETURN_SUCCESS;
+}
+
+/**
+ Sets CPU feature bit mask in CPU feature bit mask buffer.
+
+ @param[in] FeaturesBitMask Pointer to CPU feature bit mask buffer
+ @param[in] Feature The bit number of the CPU feature
+ @param[in] BitMaskSize CPU feature bit mask buffer size
+**/
+VOID
+SetCpuFeaturesBitMask (
+ IN UINT8 **FeaturesBitMask,
+ IN UINT32 Feature,
+ IN UINTN BitMaskSize
+ )
+{
+ UINT8 *CpuFeaturesBitMask;
+
+ ASSERT (FeaturesBitMask != NULL);
+ CpuFeaturesBitMask = *FeaturesBitMask;
+ if (CpuFeaturesBitMask == NULL) {
+ CpuFeaturesBitMask = AllocateZeroPool (BitMaskSize);
+ ASSERT (CpuFeaturesBitMask != NULL);
+ *FeaturesBitMask = CpuFeaturesBitMask;
+ }
+
+ CpuFeaturesBitMask += (Feature / 8);
+ *CpuFeaturesBitMask |= (UINT8) (1 << (Feature % 8));
+}
+
+/**
+ Registers a CPU Feature.
+
+ @param[in] FeatureName A Null-terminated Ascii string indicates CPU feature
+ name.
+ @param[in] GetConfigDataFunc CPU feature get configuration data function. This
+ is an optional parameter that may be NULL. If NULL,
+ then the most recently registered function for the
+ CPU feature is used. If no functions are registered
+ for a CPU feature, then the CPU configuration data
+ for the registered feature is NULL.
+ @param[in] SupportFunc CPU feature support function. This is an optional
+ parameter that may be NULL. If NULL, then the most
+ recently registered function for the CPU feature is
+ used. If no functions are registered for a CPU
+ feature, then the CPU feature is assumed to be
+ supported by all CPUs.
+ @param[in] InitializeFunc CPU feature initialize function. This is an optional
+ parameter that may be NULL. If NULL, then the most
+ recently registered function for the CPU feature is
+ used. If no functions are registered for a CPU
+ feature, then the CPU feature initialization is
+ skipped.
+ @param[in] ... Variable argument list of UINT32 CPU feature value.
+ Values with no modifiers are the features provided
+ by the registered functions.
+ Values with CPU_FEATURE_BEFORE modifier are features
+ that must be initialized after the features provided
+ by the registered functions are used.
+ Values with CPU_FEATURE_AFTER modifier are features
+ that must be initialized before the features provided
+ by the registered functions are used.
+ The last argument in this variable argument list must
+ always be CPU_FEATURE_END.
+
+ @retval RETURN_SUCCESS The CPU feature was successfully registered.
+ @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
+ the CPU feature.
+ @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
+ supported due to a circular dependency between
+ BEFORE and AFTER features.
+
+ @note This service could be called by BSP only.
+**/
+RETURN_STATUS
+EFIAPI
+RegisterCpuFeature (
+ IN CHAR8 *FeatureName, OPTIONAL
+ IN CPU_FEATURE_GET_CONFIG_DATA GetConfigDataFunc, OPTIONAL
+ IN CPU_FEATURE_SUPPORT SupportFunc, OPTIONAL
+ IN CPU_FEATURE_INITIALIZE InitializeFunc, OPTIONAL
+ ...
+ )
+{
+ EFI_STATUS Status;
+ VA_LIST Marker;
+ UINT32 Feature;
+ UINTN BitMaskSize;
+ CPU_FEATURES_ENTRY *CpuFeature;
+ UINT8 *FeatureMask;
+ UINT8 *BeforeFeatureBitMask;
+ UINT8 *AfterFeatureBitMask;
+ BOOLEAN BeforeAll;
+ BOOLEAN AfterAll;
+
+ FeatureMask = NULL;
+ BeforeFeatureBitMask = NULL;
+ AfterFeatureBitMask = NULL;
+ BeforeAll = FALSE;
+ AfterAll = FALSE;
+
+ BitMaskSize = PcdGetSize (PcdCpuFeaturesSupport);
+
+ VA_START (Marker, InitializeFunc);
+ Feature = VA_ARG (Marker, UINT32);
+ while (Feature != CPU_FEATURE_END) {
+ ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER))
+ != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER));
+ ASSERT ((Feature & (CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL))
+ != (CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL));
+ if (Feature < CPU_FEATURE_BEFORE) {
+ BeforeAll = ((Feature & CPU_FEATURE_BEFORE_ALL) != 0) ? TRUE : FALSE;
+ AfterAll = ((Feature & CPU_FEATURE_AFTER_ALL) != 0) ? TRUE : FALSE;
+ Feature &= ~(CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL);
+ ASSERT (FeatureMask == NULL);
+ SetCpuFeaturesBitMask (&FeatureMask, Feature, BitMaskSize);
+ } else if ((Feature & CPU_FEATURE_BEFORE) != 0) {
+ SetCpuFeaturesBitMask (&BeforeFeatureBitMask, Feature & ~CPU_FEATURE_BEFORE, BitMaskSize);
+ } else if ((Feature & CPU_FEATURE_AFTER) != 0) {
+ SetCpuFeaturesBitMask (&AfterFeatureBitMask, Feature & ~CPU_FEATURE_AFTER, BitMaskSize);
+ }
+ Feature = VA_ARG (Marker, UINT32);
+ }
+ VA_END (Marker);
+
+ CpuFeature = AllocateZeroPool (sizeof (CPU_FEATURES_ENTRY));
+ ASSERT (CpuFeature != NULL);
+ CpuFeature->Signature = CPU_FEATURE_ENTRY_SIGNATURE;
+ CpuFeature->FeatureMask = FeatureMask;
+ CpuFeature->BeforeFeatureBitMask = BeforeFeatureBitMask;
+ CpuFeature->AfterFeatureBitMask = AfterFeatureBitMask;
+ CpuFeature->BeforeAll = BeforeAll;
+ CpuFeature->AfterAll = AfterAll;
+ CpuFeature->GetConfigDataFunc = GetConfigDataFunc;
+ CpuFeature->SupportFunc = SupportFunc;
+ CpuFeature->InitializeFunc = InitializeFunc;
+ if (FeatureName != NULL) {
+ CpuFeature->FeatureName = AllocatePool (CPU_FEATURE_NAME_SIZE);
+ ASSERT (CpuFeature->FeatureName != NULL);
+ Status = AsciiStrCpyS (CpuFeature->FeatureName, CPU_FEATURE_NAME_SIZE, FeatureName);
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ Status = RegisterCpuFeatureWorker (CpuFeature);
+ ASSERT_EFI_ERROR (Status);
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Add an entry in specified register table.
+
+ This function adds an entry in specified register table, with given register type,
+ register index, bit section and value.
+
+ @param[in] PreSmmFlag If TRUE, entry will be added into PreSmm register table
+ If FALSE, entry will be added into register table
+ @param[in] ProcessorNumber The index of the CPU to add a register table entry
+ @param[in] RegisterType Type of the register to program
+ @param[in] Index Index of the register to program
+ @param[in] ValidBitStart Start of the bit section
+ @param[in] ValidBitLength Length of the bit section
+ @param[in] Value Value to write
+**/
+VOID
+CpuRegisterTableWriteWorker (
+ IN BOOLEAN PreSmmFlag,
+ IN UINTN ProcessorNumber,
+ IN REGISTER_TYPE RegisterType,
+ IN UINT64 Index,
+ IN UINT8 ValidBitStart,
+ IN UINT8 ValidBitLength,
+ IN UINT64 Value
+ )
+{
+ EFI_STATUS Status;
+ CPU_FEATURES_DATA *CpuFeaturesData;
+ ACPI_CPU_DATA *AcpiCpuData;
+ CPU_REGISTER_TABLE *RegisterTable;
+ CPU_REGISTER_TABLE_ENTRY *RegisterTableEntry;
+
+ CpuFeaturesData = GetCpuFeaturesData ();
+ if (CpuFeaturesData->RegisterTable == NULL) {
+ AcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);
+ if (AcpiCpuData == NULL) {
+ AcpiCpuData = AllocateAcpiCpuData ();
+ ASSERT (AcpiCpuData != NULL);
+ //
+ // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure
+ //
+ Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);
+ ASSERT_EFI_ERROR (Status);
+ }
+ ASSERT (AcpiCpuData->RegisterTable != 0);
+ CpuFeaturesData->RegisterTable = (CPU_REGISTER_TABLE *) (UINTN) AcpiCpuData->RegisterTable;
+ CpuFeaturesData->PreSmmRegisterTable = (CPU_REGISTER_TABLE *) (UINTN) AcpiCpuData->PreSmmInitRegisterTable;
+ }
+
+ if (PreSmmFlag) {
+ RegisterTable = &CpuFeaturesData->PreSmmRegisterTable[ProcessorNumber];
+ } else {
+ RegisterTable = &CpuFeaturesData->RegisterTable[ProcessorNumber];
+ }
+
+ if (RegisterTable->TableLength == RegisterTable->AllocatedSize / sizeof (CPU_REGISTER_TABLE_ENTRY)) {
+ EnlargeRegisterTable (RegisterTable);
+ }
+
+ //
+ // Append entry in the register table.
+ //
+ RegisterTableEntry = (CPU_REGISTER_TABLE_ENTRY *) (UINTN) RegisterTable->RegisterTableEntry;
+ RegisterTableEntry[RegisterTable->TableLength].RegisterType = RegisterType;
+ RegisterTableEntry[RegisterTable->TableLength].Index = (UINT32) Index;
+ RegisterTableEntry[RegisterTable->TableLength].HighIndex = (UINT32) RShiftU64 (Index, 32);
+ RegisterTableEntry[RegisterTable->TableLength].ValidBitStart = ValidBitStart;
+ RegisterTableEntry[RegisterTable->TableLength].ValidBitLength = ValidBitLength;
+ RegisterTableEntry[RegisterTable->TableLength].Value = Value;
+
+ RegisterTable->TableLength++;
+}
+
+/**
+ Adds an entry in specified register table.
+
+ This function adds an entry in specified register table, with given register type,
+ register index, bit section and value.
+
+ @param[in] ProcessorNumber The index of the CPU to add a register table entry
+ @param[in] RegisterType Type of the register to program
+ @param[in] Index Index of the register to program
+ @param[in] ValueMask Mask of bits in register to write
+ @param[in] Value Value to write
+
+ @note This service could be called by BSP only.
+**/
+VOID
+EFIAPI
+CpuRegisterTableWrite (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_TYPE RegisterType,
+ IN UINT64 Index,
+ IN UINT64 ValueMask,
+ IN UINT64 Value
+ )
+{
+ UINT8 Start;
+ UINT8 End;
+ UINT8 Length;
+
+ Start = (UINT8)LowBitSet64 (ValueMask);
+ End = (UINT8)HighBitSet64 (ValueMask);
+ Length = End - Start + 1;
+ CpuRegisterTableWriteWorker (FALSE, ProcessorNumber, RegisterType, Index, Start, Length, Value);
+}
+
+/**
+ Adds an entry in specified Pre-SMM register table.
+
+ This function adds an entry in specified register table, with given register type,
+ register index, bit section and value.
+
+ @param[in] ProcessorNumber The index of the CPU to add a register table entry.
+ @param[in] RegisterType Type of the register to program
+ @param[in] Index Index of the register to program
+ @param[in] ValueMask Mask of bits in register to write
+ @param[in] Value Value to write
+
+ @note This service could be called by BSP only.
+**/
+VOID
+EFIAPI
+PreSmmCpuRegisterTableWrite (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_TYPE RegisterType,
+ IN UINT64 Index,
+ IN UINT64 ValueMask,
+ IN UINT64 Value
+ )
+{
+ UINT8 Start;
+ UINT8 End;
+ UINT8 Length;
+
+ Start = (UINT8)LowBitSet64 (ValueMask);
+ End = (UINT8)HighBitSet64 (ValueMask);
+ Length = End - Start + 1;
+ CpuRegisterTableWriteWorker (TRUE, ProcessorNumber, RegisterType, Index, Start, Length, Value);
+}
+
+/**
+ Worker function to determine if a CPU feature is set in input CPU feature bit mask buffer.
+
+ @param[in] CpuBitMask CPU feature bit mask buffer
+ @param[in] CpuBitMaskSize The size of CPU feature bit mask buffer
+ @param[in] Feature The bit number of the CPU feature
+
+ @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
+ @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
+
+**/
+BOOLEAN
+IsCpuFeatureSetInCpuPcd (
+ IN UINT8 *CpuBitMask,
+ IN UINTN CpuBitMaskSize,
+ IN UINT32 Feature
+ )
+{
+ if ((Feature >> 3) >= CpuBitMaskSize) {
+ return FALSE;
+ }
+ return ((*(CpuBitMask + (Feature >> 3)) & (1 << (Feature & 0x07))) != 0);
+}
+
+/**
+ Determines if a CPU feature is enabled in PcdCpuFeaturesSupport bit mask.
+ If a CPU feature is disabled in PcdCpuFeaturesSupport then all the code/data
+ associated with that feature should be optimized away if compiler
+ optimizations are enabled.
+
+ @param[in] Feature The bit number of the CPU feature to check in the PCD
+ PcdCpuFeaturesSupport
+
+ @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
+ @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
+
+ @note This service could be called by BSP only.
+**/
+BOOLEAN
+EFIAPI
+IsCpuFeatureSupported (
+ IN UINT32 Feature
+ )
+{
+ return IsCpuFeatureSetInCpuPcd (
+ (UINT8 *)PcdGetPtr (PcdCpuFeaturesSupport),
+ PcdGetSize (PcdCpuFeaturesSupport),
+ Feature
+ );
+}
+
+/**
+ Determines if a CPU feature is set in PcdCpuFeaturesSetting bit mask.
+
+ @param[in] Feature The bit number of the CPU feature to check in the PCD
+ PcdCpuFeaturesSetting
+
+ @retval TRUE The CPU feature is set in PcdCpuFeaturesSetting.
+ @retval FALSE The CPU feature is not set in PcdCpuFeaturesSetting.
+
+ @note This service could be called by BSP only.
+**/
+BOOLEAN
+EFIAPI
+IsCpuFeatureInSetting (
+ IN UINT32 Feature
+ )
+{
+ return IsCpuFeatureSetInCpuPcd (
+ (UINT8 *)PcdGetPtr (PcdCpuFeaturesSetting),
+ PcdGetSize (PcdCpuFeaturesSetting),
+ Feature
+ );
+}
+
+/**
+ Determines if a CPU feature is set in PcdCpuFeaturesCapability bit mask.
+
+ @param[in] Feature The bit number of the CPU feature to check in the PCD
+ PcdCpuFeaturesCapability
+
+ @retval TRUE The CPU feature is set in PcdCpuFeaturesCapability.
+ @retval FALSE The CPU feature is not set in PcdCpuFeaturesCapability.
+
+ @note This service could be called by BSP only.
+**/
+BOOLEAN
+EFIAPI
+IsCpuFeatureCapability (
+ IN UINT32 Feature
+ )
+{
+ return IsCpuFeatureSetInCpuPcd (
+ (UINT8 *)PcdGetPtr (PcdCpuFeaturesCapability),
+ PcdGetSize (PcdCpuFeaturesCapability),
+ Feature
+ );
+
+}
+
+/**
+ Determines if a CPU feature is set in PcdCpuFeaturesUserConfiguration bit mask.
+
+ @param[in] Feature The bit number of the CPU feature to check in the PCD
+ PcdCpuFeaturesUserConfiguration
+
+ @retval TRUE The CPU feature is set in PcdCpuFeaturesUserConfiguration.
+ @retval FALSE The CPU feature is not set in PcdCpuFeaturesUserConfiguration.
+
+ @note This service could be called by BSP only.
+**/
+BOOLEAN
+EFIAPI
+IsCpuFeatureUserConfiguration (
+ IN UINT32 Feature
+ )
+{
+ return IsCpuFeatureSetInCpuPcd (
+ (UINT8 *)PcdGetPtr (PcdCpuFeaturesUserConfiguration),
+ PcdGetSize (PcdCpuFeaturesUserConfiguration),
+ Feature
+ );
+
+}
+
+/**
+ Switches to assigned BSP after CPU features initialization.
+
+ @param[in] ProcessorNumber The index of the CPU executing this function.
+
+ @note This service could be called by BSP only.
+**/
+VOID
+EFIAPI
+SwitchBspAfterFeaturesInitialize (
+ IN UINTN ProcessorNumber
+ )
+{
+ CPU_FEATURES_DATA *CpuFeaturesData;
+
+ CpuFeaturesData = GetCpuFeaturesData ();
+ CpuFeaturesData->BspNumber = ProcessorNumber;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 02:41:20 +0000