/** @file Register CPU Features Library to register and manage CPU features. Copyright (c) 2017 - 2020, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent **/ #ifndef __REGISTER_CPU_FEATURES_LIB_H__ #define __REGISTER_CPU_FEATURES_LIB_H__ #include #include #include /// /// Defines used to identify a CPU feature. The lower 16-bits are used to /// identify a unique CPU feature and the value represents a bit number in /// a bit mask. The upper 16-bits are bit mask values that are used as /// modifiers of a CPU feature. When used in a list, the define value /// CPU_FEATURE_END is used to terminate a list of CPU feature values. /// @{ #define CPU_FEATURE_AESNI 0 #define CPU_FEATURE_TURBO_MODE 1 #define CPU_FEATURE_MWAIT 2 #define CPU_FEATURE_ACPI 3 #define CPU_FEATURE_EIST 4 #define CPU_FEATURE_RESERVED_5 5 #define CPU_FEATURE_FASTSTRINGS 6 #define CPU_FEATURE_VMX 7 #define CPU_FEATURE_SMX 8 #define CPU_FEATURE_LMCE 9 #define CPU_FEATURE_LOCK_FEATURE_CONTROL_REGISTER 10 #define CPU_FEATURE_LIMIT_CPUID_MAX_VAL 11 #define CPU_FEATURE_MCE 12 #define CPU_FEATURE_MCA 13 #define CPU_FEATURE_MCG_CTL 14 #define CPU_FEATURE_PENDING_BREAK 15 #define CPU_FEATURE_C1E 16 #define CPU_FEATURE_C1_AUTO_DEMOTION 17 #define CPU_FEATURE_C3_AUTO_DEMOTION 18 #define CPU_FEATURE_C1_UNDEMOTION 19 #define CPU_FEATURE_C3_UNDEMOTION 20 #define CPU_FEATURE_C_STATE 21 #define CPU_FEATURE_TM 22 #define CPU_FEATURE_TM2 23 #define CPU_FEATURE_X2APIC 24 #define CPU_FEATURE_RESERVED_25 25 #define CPU_FEATURE_RESERVED_26 26 #define CPU_FEATURE_RESERVED_27 27 #define CPU_FEATURE_RESERVED_28 28 #define CPU_FEATURE_RESERVED_29 29 #define CPU_FEATURE_RESERVED_30 30 #define CPU_FEATURE_RESERVED_31 31 #define CPU_FEATURE_L2_PREFETCHER (32+0) #define CPU_FEATURE_L1_DATA_PREFETCHER (32+1) #define CPU_FEATURE_HARDWARE_PREFETCHER (32+2) #define CPU_FEATURE_ADJACENT_CACHE_LINE_PREFETCH (32+3) #define CPU_FEATURE_DCU_PREFETCHER (32+4) #define CPU_FEATURE_IP_PREFETCHER (32+5) #define CPU_FEATURE_MLC_STREAMER_PREFETCHER (32+6) #define CPU_FEATURE_MLC_SPATIAL_PREFETCHER (32+7) #define CPU_FEATURE_THREE_STRIKE_COUNTER (32+8) #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) #define CPU_FEATURE_PPIN (32+11) #define CPU_FEATURE_PROC_TRACE (32+12) #define CPU_FEATURE_BEFORE_ALL BIT23 #define CPU_FEATURE_AFTER_ALL BIT24 #define CPU_FEATURE_THREAD_BEFORE BIT25 #define CPU_FEATURE_THREAD_AFTER BIT26 #define CPU_FEATURE_CORE_BEFORE BIT27 #define CPU_FEATURE_CORE_AFTER BIT28 #define CPU_FEATURE_PACKAGE_BEFORE BIT29 #define CPU_FEATURE_PACKAGE_AFTER BIT30 #define CPU_FEATURE_END MAX_UINT32 /// @} /// /// The bit field to indicate whether the processor is the first in its parent scope. /// typedef struct { // // Set to 1 when current processor is the first thread in the core it resides in. // UINT32 Thread : 1; // // Set to 1 when current processor is a thread of the first core in the module it resides in. // UINT32 Core : 1; // // Set to 1 when current processor is a thread of the first module in the tile it resides in. // UINT32 Module : 1; // // Set to 1 when current processor is a thread of the first tile in the die it resides in. // UINT32 Tile : 1; // // Set to 1 when current processor is a thread of the first die in the package it resides in. // UINT32 Die : 1; // // Set to 1 when current processor is a thread of the first package in the system. // UINT32 Package : 1; UINT32 Reserved : 26; } REGISTER_CPU_FEATURE_FIRST_PROCESSOR; /// /// CPU Information passed into the SupportFunc and InitializeFunc of the /// RegisterCpuFeature() library function. This structure contains information /// that is commonly used during CPU feature detection and initialization. /// typedef struct { /// /// The package that the CPU resides /// EFI_PROCESSOR_INFORMATION ProcessorInfo; /// /// The bit flag indicating whether the CPU is the first Thread/Core/Module/Tile/Die/Package in its parent scope. /// REGISTER_CPU_FEATURE_FIRST_PROCESSOR First; /// /// The Display Family of the CPU computed from CPUID leaf CPUID_VERSION_INFO /// UINT32 DisplayFamily; /// /// The Display Model of the CPU computed from CPUID leaf CPUID_VERSION_INFO /// UINT32 DisplayModel; /// /// The Stepping ID of the CPU computed from CPUID leaf CPUID_VERSION_INFO /// UINT32 SteppingId; /// /// The Processor Type of the CPU computed from CPUID leaf CPUID_VERSION_INFO /// UINT32 ProcessorType; /// /// Bit field structured returned in ECX from CPUID leaf CPUID_VERSION_INFO /// CPUID_VERSION_INFO_ECX CpuIdVersionInfoEcx; /// /// Bit field structured returned in EDX from CPUID leaf CPUID_VERSION_INFO /// CPUID_VERSION_INFO_EDX CpuIdVersionInfoEdx; } REGISTER_CPU_FEATURE_INFORMATION; /** 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 ); /** 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 ); /** Prepares for the data used by CPU feature detection and initialization. @param[in] NumberOfProcessors The number of CPUs in the platform. @return Pointer to a buffer of CPU related configuration data. @note This service could be called by BSP only. **/ typedef VOID * (EFIAPI *CPU_FEATURE_GET_CONFIG_DATA)( IN UINTN NumberOfProcessors ); /** Detects if CPU feature supported on current processor. @param[in] ProcessorNumber The index of the CPU executing this function. @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION structure for the CPU executing this function. @param[in] ConfigData A pointer to the configuration buffer returned by CPU_FEATURE_GET_CONFIG_DATA. NULL if CPU_FEATURE_GET_CONFIG_DATA was not provided in RegisterCpuFeature(). @retval TRUE CPU feature is supported. @retval FALSE CPU feature is not supported. @note This service could be called by BSP/APs. **/ typedef BOOLEAN (EFIAPI *CPU_FEATURE_SUPPORT)( IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData OPTIONAL ); /** Initializes CPU feature to specific state. This service does not initialize hardware and only produces entries in the Register Table for specified processor. Hardware initialization on BSP/APs will be done in CpuFeaturesInitialize(). @param[in] ProcessorNumber The index of the CPU executing this function. @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION structure for the CPU executing this function. @param[in] ConfigData A pointer to the configuration buffer returned by CPU_FEATURE_GET_CONFIG_DATA. NULL if CPU_FEATURE_GET_CONFIG_DATA was not provided in RegisterCpuFeature(). @param[in] State If TRUE, then the CPU feature must be enabled. If FALSE, then the CPU feature must be disabled. @retval RETURN_SUCCESS CPU feature is initialized. @note This service could be called by BSP only. **/ typedef RETURN_STATUS (EFIAPI *CPU_FEATURE_INITIALIZE)( IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData, OPTIONAL IN BOOLEAN State ); /** 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 ... ); /** Performs CPU features detection. This service will invoke MP service to check CPU features' capabilities on BSP/APs. @note This service could be called by BSP only. **/ VOID EFIAPI CpuFeaturesDetect ( VOID ); /** Performs CPU features Initialization. This service will invoke MP service to perform CPU features initialization on BSP/APs per user configuration. @note This service could be called by BSP only. **/ VOID EFIAPI CpuFeaturesInitialize ( VOID ); /** 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 ); /** 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 ); /** 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. Driver will test the current value before setting new 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 CpuRegisterTableTestThenWrite ( IN UINTN ProcessorNumber, IN REGISTER_TYPE RegisterType, IN UINT64 Index, IN UINT64 ValueMask, IN UINT64 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 ); /** Adds a 32-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, 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] Value Value to write @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_WRITE32(ProcessorNumber, RegisterType, Index, Value) \ do { \ CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT32, Value); \ } while(FALSE); /** Adds a 32-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, and value. Driver will test the current value before setting new 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] Value Value to write @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_TEST_THEN_WRITE32(ProcessorNumber, RegisterType, Index, Value) \ do { \ CpuRegisterTableTestThenWrite (ProcessorNumber, RegisterType, Index, MAX_UINT32, Value); \ } while(FALSE); /** Adds a 64-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, 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] Value Value to write @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_WRITE64(ProcessorNumber, RegisterType, Index, Value) \ do { \ CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT64, Value); \ } while(FALSE); /** Adds a 64-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, and value. Driver will test the current value before setting new 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] Value Value to write @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_TEST_THEN_WRITE64(ProcessorNumber, RegisterType, Index, Value) \ do { \ CpuRegisterTableTestThenWrite (ProcessorNumber, RegisterType, Index, MAX_UINT64, Value); \ } while(FALSE); /** Adds a bit field write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, bit field 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] Type The data type name of a register structure. @param[in] Field The bit fiel name in register structure to write. @param[in] Value Value to write to the bit field. @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_WRITE_FIELD(ProcessorNumber, RegisterType, Index, Type, Field, Value) \ do { \ UINT64 ValueMask; \ ValueMask = MAX_UINT64; \ ((Type *)(&ValueMask))->Field = 0; \ CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, ~ValueMask, Value); \ } while(FALSE); /** Adds a bit field write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, bit field section, and value. Driver will test the current value before setting new 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] Type The data type name of a register structure. @param[in] Field The bit fiel name in register structure to write. @param[in] Value Value to write to the bit field. @note This service could be called by BSP only. **/ #define CPU_REGISTER_TABLE_TEST_THEN_WRITE_FIELD(ProcessorNumber, RegisterType, Index, Type, Field, Value) \ do { \ UINT64 ValueMask; \ ValueMask = MAX_UINT64; \ ((Type *)(&ValueMask))->Field = 0; \ CpuRegisterTableTestThenWrite (ProcessorNumber, RegisterType, Index, ~ValueMask, Value); \ } while(FALSE); /** Adds a 32-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, 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] Value Value to write @note This service could be called by BSP only. **/ #define PRE_SMM_CPU_REGISTER_TABLE_WRITE32(ProcessorNumber, RegisterType, Index, Value) \ do { \ PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT32, Value); \ } while(FALSE); /** Adds a 64-bit register write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, 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] Value Value to write @note This service could be called by BSP only. **/ #define PRE_SMM_CPU_REGISTER_TABLE_WRITE64(ProcessorNumber, RegisterType, Index, Value) \ do { \ PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT64, Value); \ } while(FALSE); /** Adds a bit field write entry in specified register table. This macro adds an entry in specified register table, with given register type, register index, bit field 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] Type The data type name of a register structure. @param[in] Field The bit fiel name in register structure to write. @param[in] Value Value to write to the bit field. @note This service could be called by BSP only. **/ #define PRE_SMM_CPU_REGISTER_TABLE_WRITE_FIELD(ProcessorNumber, RegisterType, Index, Type, Field, Value) \ do { \ UINT64 ValueMask; \ ValueMask = MAX_UINT64; \ ((Type *)(&ValueMask))->Field = 0; \ PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, ~ValueMask, Value); \ } while(FALSE); #endif