UefiCpuPkg: Add NULL CPU Common Features Library instance
This NULL CPU common Features Library instance will register some CPU features defined in Intel(R) 64 and IA-32 Architectures Software Developer's Manual, Volume 3, September 2016, Chapter 35 Model-Specific-Registers (MSR). Add PCD PcdCpuClockModulationDutyCycle and PcdIsPowerOnReset consumed by NULL CPU Common Features Library instance. v2: 1. Using MSR_IA32_EFER to enable/disable NX feature instead of using MSR_IA32_MISC_ENABLE. 2. Fix bug that SMX and VMX feature is swapped. v3: 1. Add AesniGetConfigData() to get current register state. v5: Move MSR reading from AesniGetConfigData() to AesniSupport(). Cc: Feng Tian <feng.tian@intel.com> Cc: Michael Kinney <michael.d.kinney@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com>
This commit is contained in:
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UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
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314
UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
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/** @file
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Features in MSR_IA32_FEATURE_CONTROL register.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "CpuCommonFeatures.h"
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/**
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Prepares for the data used by CPU feature detection and initialization.
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@param[in] NumberOfProcessors The number of CPUs in the platform.
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@return Pointer to a buffer of CPU related configuration data.
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@note This service could be called by BSP only.
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**/
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VOID *
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EFIAPI
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FeatureControlGetConfigData (
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IN UINTN NumberOfProcessors
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)
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{
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VOID *ConfigData;
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ConfigData = AllocateZeroPool (sizeof (MSR_IA32_FEATURE_CONTROL_REGISTER) * NumberOfProcessors);
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ASSERT (ConfigData != NULL);
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return ConfigData;
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}
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/**
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Detects if VMX feature supported on current processor.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@retval TRUE VMX feature is supported.
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@retval FALSE VMX feature is not supported.
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@note This service could be called by BSP/APs.
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**/
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BOOLEAN
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EFIAPI
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VmxSupport (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData OPTIONAL
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
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return (CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1);
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}
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/**
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Initializes VMX inside SMX feature to specific state.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@param[in] State If TRUE, then the VMX inside SMX feature must be enabled.
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If FALSE, then the VMX inside SMX feature must be disabled.
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@retval RETURN_SUCCESS VMX inside SMX feature is initialized.
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@note This service could be called by BSP only.
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**/
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RETURN_STATUS
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EFIAPI
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VmxInsideSmxInitialize (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData, OPTIONAL
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IN BOOLEAN State
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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Msr,
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MSR_IA32_FEATURE_CONTROL,
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MSR_IA32_FEATURE_CONTROL_REGISTER,
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Bits.EnableVmxInsideSmx,
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(State) ? 1 : 0
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);
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}
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return RETURN_SUCCESS;
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}
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/**
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Initializes SENTER feature to specific state.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@param[in] State If TRUE, then the SENTER feature must be enabled.
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If FALSE, then the SENTER feature must be disabled.
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@retval RETURN_SUCCESS SENTER feature is initialized.
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@note This service could be called by BSP only.
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**/
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RETURN_STATUS
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EFIAPI
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SenterInitialize (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData, OPTIONAL
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IN BOOLEAN State
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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Msr,
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MSR_IA32_FEATURE_CONTROL,
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MSR_IA32_FEATURE_CONTROL_REGISTER,
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Bits.SenterLocalFunctionEnables,
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(State) ? 0x7F : 0
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);
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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Msr,
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MSR_IA32_FEATURE_CONTROL,
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MSR_IA32_FEATURE_CONTROL_REGISTER,
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Bits.SenterGlobalEnable,
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(State) ? 1 : 0
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);
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}
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return RETURN_SUCCESS;
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}
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/**
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Detects if Lock Feature Control Register feature supported on current processor.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@retval TRUE Lock Feature Control Register feature is supported.
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@retval FALSE Lock Feature Control Register feature is not supported.
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@note This service could be called by BSP/APs.
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**/
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BOOLEAN
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EFIAPI
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LockFeatureControlRegisterSupport (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData OPTIONAL
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
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return TRUE;
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}
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/**
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Initializes Lock Feature Control Register feature to specific state.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@param[in] State If TRUE, then the Lock Feature Control Register feature must be enabled.
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If FALSE, then the Lock Feature Control Register feature must be disabled.
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@retval RETURN_SUCCESS Lock Feature Control Register feature is initialized.
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@note This service could be called by BSP only.
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**/
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RETURN_STATUS
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EFIAPI
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LockFeatureControlRegisterInitialize (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData, OPTIONAL
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IN BOOLEAN State
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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Msr,
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MSR_IA32_FEATURE_CONTROL,
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MSR_IA32_FEATURE_CONTROL_REGISTER,
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Bits.Lock,
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1
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);
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}
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return RETURN_SUCCESS;
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}
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/**
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Detects if SMX feature supported on current processor.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@retval TRUE SMX feature is supported.
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@retval FALSE SMX feature is not supported.
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@note This service could be called by BSP/APs.
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**/
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BOOLEAN
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EFIAPI
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SmxSupport (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData OPTIONAL
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
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return (CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1);
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}
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/**
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Initializes VMX outside SMX feature to specific state.
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@param[in] ProcessorNumber The index of the CPU executing this function.
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@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
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structure for the CPU executing this function.
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@param[in] ConfigData A pointer to the configuration buffer returned
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by CPU_FEATURE_GET_CONFIG_DATA. NULL if
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CPU_FEATURE_GET_CONFIG_DATA was not provided in
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RegisterCpuFeature().
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@param[in] State If TRUE, then the VMX outside SMX feature must be enabled.
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If FALSE, then the VMX outside SMX feature must be disabled.
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@retval RETURN_SUCCESS VMX outside SMX feature is initialized.
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@note This service could be called by BSP only.
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**/
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RETURN_STATUS
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EFIAPI
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VmxOutsideSmxInitialize (
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IN UINTN ProcessorNumber,
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IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
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IN VOID *ConfigData, OPTIONAL
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IN BOOLEAN State
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)
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{
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MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
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ASSERT (ConfigData != NULL);
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MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
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if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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Msr,
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MSR_IA32_FEATURE_CONTROL,
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MSR_IA32_FEATURE_CONTROL_REGISTER,
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Bits.EnableVmxOutsideSmx,
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(State) ? 1 : 0
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);
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}
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return RETURN_SUCCESS;
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}
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