b1fe2029fa
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed: Jeff Fan <jeff.fan@intel.com>
291 lines
10 KiB
C
291 lines
10 KiB
C
/** @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 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 feature must be enabled.
|
|
If FALSE, then the VMX feature must be disabled.
|
|
|
|
@retval RETURN_SUCCESS VMX feature is initialized.
|
|
|
|
@note This service could be called by BSP only.
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
VmxInitialize (
|
|
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;
|
|
}
|
|
|
|
/**
|
|
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 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 SMX feature must be enabled.
|
|
If FALSE, then SMX feature must be disabled.
|
|
|
|
@retval RETURN_SUCCESS SMX feature is initialized.
|
|
@retval RETURN_UNSUPPORTED VMX not initialized.
|
|
|
|
@note This service could be called by BSP only.
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
SmxInitialize (
|
|
IN UINTN ProcessorNumber,
|
|
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
|
|
IN VOID *ConfigData, OPTIONAL
|
|
IN BOOLEAN State
|
|
)
|
|
{
|
|
MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;
|
|
RETURN_STATUS Status;
|
|
|
|
Status = RETURN_SUCCESS;
|
|
|
|
if (State && (!IsCpuFeatureInSetting (CPU_FEATURE_VMX))) {
|
|
DEBUG ((DEBUG_WARN, "Warning :: Can't enable SMX feature when VMX feature not enabled, disable it.\n"));
|
|
State = FALSE;
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
|
|
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
|
|
);
|
|
|
|
CPU_REGISTER_TABLE_WRITE_FIELD (
|
|
ProcessorNumber,
|
|
Msr,
|
|
MSR_IA32_FEATURE_CONTROL,
|
|
MSR_IA32_FEATURE_CONTROL_REGISTER,
|
|
Bits.EnableVmxInsideSmx,
|
|
(State) ? 1 : 0
|
|
);
|
|
}
|
|
return Status;
|
|
}
|