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/** @file
Register CPU Features Library to register and manage CPU features.
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.
**/
#ifndef __REGISTER_CPU_FEATURES_LIB_H__
#define __REGISTER_CPU_FEATURES_LIB_H__
#include <AcpiCpuData.h>
#include <Register/Cpuid.h>
#include <Protocol/MpService.h>
///
/// 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_XD 5
#define CPU_FEATURE_FASTSTRINGS 6
#define CPU_FEATURE_VMX 7
#define CPU_FEATURE_SMX 8
#define CPU_FEATURE_SENTER 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_STRICK_COUNTER (32+8)
#define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9)
#define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10)
#define CPU_FEATURE_BEFORE_ALL BIT27
#define CPU_FEATURE_AFTER_ALL BIT28
#define CPU_FEATURE_BEFORE BIT29
#define CPU_FEATURE_AFTER BIT30
#define CPU_FEATURE_END MAX_UINT32
/// @}
///
/// 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 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
);
/**
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
);
/**
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
);
/**
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 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 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 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 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
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