diff options
Diffstat (limited to 'UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c')
| -rw-r--r-- | UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c | 628 |
1 files changed, 314 insertions, 314 deletions
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c index e627a65dfd..0b5c161f87 100644 --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c @@ -1,314 +1,314 @@ -/** @file - Features in MSR_IA32_FEATURE_CONTROL register. - - 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 "CpuCommonFeatures.h" - -/** - 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. -**/ -VOID * -EFIAPI -FeatureControlGetConfigData ( - IN UINTN NumberOfProcessors - ) -{ - VOID *ConfigData; - - ConfigData = AllocateZeroPool (sizeof (MSR_IA32_FEATURE_CONTROL_REGISTER) * NumberOfProcessors); - ASSERT (ConfigData != NULL); - return ConfigData; -} - -/** - Detects if VMX 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 VMX feature is supported. - @retval FALSE VMX feature is not supported. - - @note This service could be called by BSP/APs. -**/ -BOOLEAN -EFIAPI -VmxSupport ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData OPTIONAL - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL); - return (CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1); -} - -/** - Initializes VMX inside SMX feature to specific state. - - @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 VMX inside SMX feature must be enabled. - If FALSE, then the VMX inside SMX feature must be disabled. - - @retval RETURN_SUCCESS VMX inside SMX feature is initialized. - - @note This service could be called by BSP only. -**/ -RETURN_STATUS -EFIAPI -VmxInsideSmxInitialize ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData, OPTIONAL - IN BOOLEAN State - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - if (MsrRegister[ProcessorNumber].Bits.Lock == 0) { - CPU_REGISTER_TABLE_WRITE_FIELD ( - ProcessorNumber, - Msr, - MSR_IA32_FEATURE_CONTROL, - MSR_IA32_FEATURE_CONTROL_REGISTER, - Bits.EnableVmxInsideSmx, - (State) ? 1 : 0 - ); - } - return RETURN_SUCCESS; -} - -/** - Initializes SENTER feature to specific state. - - @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 SENTER feature must be enabled. - If FALSE, then the SENTER feature must be disabled. - - @retval RETURN_SUCCESS SENTER feature is initialized. - - @note This service could be called by BSP only. -**/ -RETURN_STATUS -EFIAPI -SenterInitialize ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData, OPTIONAL - IN BOOLEAN State - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - if (MsrRegister[ProcessorNumber].Bits.Lock == 0) { - CPU_REGISTER_TABLE_WRITE_FIELD ( - ProcessorNumber, - Msr, - MSR_IA32_FEATURE_CONTROL, - MSR_IA32_FEATURE_CONTROL_REGISTER, - Bits.SenterLocalFunctionEnables, - (State) ? 0x7F : 0 - ); - - CPU_REGISTER_TABLE_WRITE_FIELD ( - ProcessorNumber, - Msr, - MSR_IA32_FEATURE_CONTROL, - MSR_IA32_FEATURE_CONTROL_REGISTER, - Bits.SenterGlobalEnable, - (State) ? 1 : 0 - ); - } - return RETURN_SUCCESS; -} - -/** - Detects if Lock Feature Control Register 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 Lock Feature Control Register feature is supported. - @retval FALSE Lock Feature Control Register feature is not supported. - - @note This service could be called by BSP/APs. -**/ -BOOLEAN -EFIAPI -LockFeatureControlRegisterSupport ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData OPTIONAL - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL); - return TRUE; -} - -/** - Initializes Lock Feature Control Register feature to specific state. - - @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 Lock Feature Control Register feature must be enabled. - If FALSE, then the Lock Feature Control Register feature must be disabled. - - @retval RETURN_SUCCESS Lock Feature Control Register feature is initialized. - - @note This service could be called by BSP only. -**/ -RETURN_STATUS -EFIAPI -LockFeatureControlRegisterInitialize ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData, OPTIONAL - IN BOOLEAN State - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - if (MsrRegister[ProcessorNumber].Bits.Lock == 0) { - CPU_REGISTER_TABLE_WRITE_FIELD ( - ProcessorNumber, - Msr, - MSR_IA32_FEATURE_CONTROL, - MSR_IA32_FEATURE_CONTROL_REGISTER, - Bits.Lock, - 1 - ); - } - return RETURN_SUCCESS; -} - -/** - Detects if SMX 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 SMX feature is supported. - @retval FALSE SMX feature is not supported. - - @note This service could be called by BSP/APs. -**/ -BOOLEAN -EFIAPI -SmxSupport ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData OPTIONAL - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL); - return (CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1); -} - -/** - Initializes VMX outside SMX feature to specific state. - - @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 VMX outside SMX feature must be enabled. - If FALSE, then the VMX outside SMX feature must be disabled. - - @retval RETURN_SUCCESS VMX outside SMX feature is initialized. - - @note This service could be called by BSP only. -**/ -RETURN_STATUS -EFIAPI -VmxOutsideSmxInitialize ( - IN UINTN ProcessorNumber, - IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, - IN VOID *ConfigData, OPTIONAL - IN BOOLEAN State - ) -{ - MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister; - - ASSERT (ConfigData != NULL); - MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData; - if (MsrRegister[ProcessorNumber].Bits.Lock == 0) { - CPU_REGISTER_TABLE_WRITE_FIELD ( - ProcessorNumber, - Msr, - MSR_IA32_FEATURE_CONTROL, - MSR_IA32_FEATURE_CONTROL_REGISTER, - Bits.EnableVmxOutsideSmx, - (State) ? 1 : 0 - ); - } - return RETURN_SUCCESS; -} +/** @file
+ Features in MSR_IA32_FEATURE_CONTROL register.
+
+ 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 "CpuCommonFeatures.h"
+
+/**
+ 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.
+**/
+VOID *
+EFIAPI
+FeatureControlGetConfigData (
+ IN UINTN NumberOfProcessors
+ )
+{
+ VOID *ConfigData;
+
+ ConfigData = AllocateZeroPool (sizeof (MSR_IA32_FEATURE_CONTROL_REGISTER) * NumberOfProcessors);
+ ASSERT (ConfigData != NULL);
+ return ConfigData;
+}
+
+/**
+ Detects if VMX 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 VMX feature is supported.
+ @retval FALSE VMX feature is not supported.
+
+ @note This service could be called by BSP/APs.
+**/
+BOOLEAN
+EFIAPI
+VmxSupport (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData OPTIONAL
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
+ return (CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1);
+}
+
+/**
+ Initializes VMX inside SMX feature to specific state.
+
+ @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 VMX inside SMX feature must be enabled.
+ If FALSE, then the VMX inside SMX feature must be disabled.
+
+ @retval RETURN_SUCCESS VMX inside SMX feature is initialized.
+
+ @note This service could be called by BSP only.
+**/
+RETURN_STATUS
+EFIAPI
+VmxInsideSmxInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_FEATURE_CONTROL,
+ MSR_IA32_FEATURE_CONTROL_REGISTER,
+ Bits.EnableVmxInsideSmx,
+ (State) ? 1 : 0
+ );
+ }
+ return RETURN_SUCCESS;
+}
+
+/**
+ Initializes SENTER feature to specific state.
+
+ @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 SENTER feature must be enabled.
+ If FALSE, then the SENTER feature must be disabled.
+
+ @retval RETURN_SUCCESS SENTER feature is initialized.
+
+ @note This service could be called by BSP only.
+**/
+RETURN_STATUS
+EFIAPI
+SenterInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_FEATURE_CONTROL,
+ MSR_IA32_FEATURE_CONTROL_REGISTER,
+ Bits.SenterLocalFunctionEnables,
+ (State) ? 0x7F : 0
+ );
+
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_FEATURE_CONTROL,
+ MSR_IA32_FEATURE_CONTROL_REGISTER,
+ Bits.SenterGlobalEnable,
+ (State) ? 1 : 0
+ );
+ }
+ return RETURN_SUCCESS;
+}
+
+/**
+ Detects if Lock Feature Control Register 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 Lock Feature Control Register feature is supported.
+ @retval FALSE Lock Feature Control Register feature is not supported.
+
+ @note This service could be called by BSP/APs.
+**/
+BOOLEAN
+EFIAPI
+LockFeatureControlRegisterSupport (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData OPTIONAL
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
+ return TRUE;
+}
+
+/**
+ Initializes Lock Feature Control Register feature to specific state.
+
+ @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 Lock Feature Control Register feature must be enabled.
+ If FALSE, then the Lock Feature Control Register feature must be disabled.
+
+ @retval RETURN_SUCCESS Lock Feature Control Register feature is initialized.
+
+ @note This service could be called by BSP only.
+**/
+RETURN_STATUS
+EFIAPI
+LockFeatureControlRegisterInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_FEATURE_CONTROL,
+ MSR_IA32_FEATURE_CONTROL_REGISTER,
+ Bits.Lock,
+ 1
+ );
+ }
+ return RETURN_SUCCESS;
+}
+
+/**
+ Detects if SMX 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 SMX feature is supported.
+ @retval FALSE SMX feature is not supported.
+
+ @note This service could be called by BSP/APs.
+**/
+BOOLEAN
+EFIAPI
+SmxSupport (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData OPTIONAL
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);
+ return (CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1);
+}
+
+/**
+ Initializes VMX outside SMX feature to specific state.
+
+ @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 VMX outside SMX feature must be enabled.
+ If FALSE, then the VMX outside SMX feature must be disabled.
+
+ @retval RETURN_SUCCESS VMX outside SMX feature is initialized.
+
+ @note This service could be called by BSP only.
+**/
+RETURN_STATUS
+EFIAPI
+VmxOutsideSmxInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ )
+{
+ MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
+
+ ASSERT (ConfigData != NULL);
+ MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;
+ if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_FEATURE_CONTROL,
+ MSR_IA32_FEATURE_CONTROL_REGISTER,
+ Bits.EnableVmxOutsideSmx,
+ (State) ? 1 : 0
+ );
+ }
+ return RETURN_SUCCESS;
+}
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