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/** @file
Machine Check features.
Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "CpuCommonFeatures.h"
/**
Detects if Machine Check Exception 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 Machine Check Exception feature is supported.
@retval FALSE Machine Check Exception feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
MceSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
)
{
return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCE == 1);
}
/**
Initializes Machine Check Exception 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 Machine Check Exception feature must be enabled.
If FALSE, then the Machine Check Exception feature must be disabled.
@retval RETURN_SUCCESS Machine Check Exception feature is initialized.
@note This service could be called by BSP only.
**/
RETURN_STATUS
EFIAPI
MceInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL,
IN BOOLEAN State
)
{
//
// Set MCE bit in CR4
//
CPU_REGISTER_TABLE_WRITE_FIELD (
ProcessorNumber,
ControlRegister,
4,
IA32_CR4,
Bits.MCE,
(State) ? 1 : 0
);
return RETURN_SUCCESS;
}
/**
Detects if Machine Check Architecture 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 Machine Check Architecture feature is supported.
@retval FALSE Machine Check Architecture feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
McaSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
)
{
if (!MceSupport (ProcessorNumber, CpuInfo, ConfigData)) {
return FALSE;
}
return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCA == 1);
}
/**
Initializes Machine Check Architecture 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 Machine Check Architecture feature must be enabled.
If FALSE, then the Machine Check Architecture feature must be disabled.
@retval RETURN_SUCCESS Machine Check Architecture feature is initialized.
@note This service could be called by BSP only.
**/
RETURN_STATUS
EFIAPI
McaInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL,
IN BOOLEAN State
)
{
MSR_IA32_MCG_CAP_REGISTER McgCap;
UINT32 BankIndex;
//
// The scope of MSR_IA32_MC*_CTL/MSR_IA32_MC*_STATUS is core for below processor type, only program
// MSR_IA32_MC*_CTL/MSR_IA32_MC*_STATUS for thread 0 in each core.
//
if (IS_ATOM_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_SILVERMONT_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_SANDY_BRIDGE_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_SKYLAKE_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_XEON_PHI_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_PENTIUM_4_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_CORE_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel))
{
if (CpuInfo->ProcessorInfo.Location.Thread != 0) {
return RETURN_SUCCESS;
}
}
//
// The scope of MSR_IA32_MC*_CTL/MSR_IA32_MC*_STATUS is package for below processor type, only program
// MSR_IA32_MC*_CTL/MSR_IA32_MC*_STATUS once for each package.
//
if (IS_NEHALEM_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel)) {
if ((CpuInfo->First.Thread == 0) || (CpuInfo->First.Core == 0)) {
return RETURN_SUCCESS;
}
}
if (State) {
McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
for (BankIndex = 0; BankIndex < (UINT32)McgCap.Bits.Count; BankIndex++) {
CPU_REGISTER_TABLE_WRITE64 (
ProcessorNumber,
Msr,
MSR_IA32_MC0_CTL + BankIndex * 4,
MAX_UINT64
);
}
if (PcdGetBool (PcdIsPowerOnReset)) {
for (BankIndex = 0; BankIndex < (UINTN)McgCap.Bits.Count; BankIndex++) {
CPU_REGISTER_TABLE_WRITE64 (
ProcessorNumber,
Msr,
MSR_IA32_MC0_STATUS + BankIndex * 4,
0
);
}
}
}
return RETURN_SUCCESS;
}
/**
Detects if IA32_MCG_CTL 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 IA32_MCG_CTL feature is supported.
@retval FALSE IA32_MCG_CTL feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
McgCtlSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
)
{
MSR_IA32_MCG_CAP_REGISTER McgCap;
if (!McaSupport (ProcessorNumber, CpuInfo, ConfigData)) {
return FALSE;
}
McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
return (McgCap.Bits.MCG_CTL_P == 1);
}
/**
Initializes IA32_MCG_CTL 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 IA32_MCG_CTL feature must be enabled.
If FALSE, then the IA32_MCG_CTL feature must be disabled.
@retval RETURN_SUCCESS IA32_MCG_CTL feature is initialized.
@note This service could be called by BSP only.
**/
RETURN_STATUS
EFIAPI
McgCtlInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL,
IN BOOLEAN State
)
{
CPU_REGISTER_TABLE_WRITE64 (
ProcessorNumber,
Msr,
MSR_IA32_MCG_CTL,
(State) ? MAX_UINT64 : 0
);
return RETURN_SUCCESS;
}
/**
Detects if Local machine check exception 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 Local machine check exception feature is supported.
@retval FALSE Local machine check exception feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
LmceSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
)
{
MSR_IA32_MCG_CAP_REGISTER McgCap;
if (!McaSupport (ProcessorNumber, CpuInfo, ConfigData)) {
return FALSE;
}
McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
if (ProcessorNumber == 0) {
DEBUG ((DEBUG_INFO, "LMCE enable = %x\n", (BOOLEAN)(McgCap.Bits.MCG_LMCE_P != 0)));
}
return (BOOLEAN)(McgCap.Bits.MCG_LMCE_P != 0);
}
/**
Initializes Local machine check exception 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 Local machine check exception
feature must be enabled.
If FALSE, then the Local machine check exception
feature must be disabled.
@retval RETURN_SUCCESS Local machine check exception feature is initialized.
**/
RETURN_STATUS
EFIAPI
LmceInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL,
IN BOOLEAN State
)
{
//
// The scope of LcmeOn bit in the MSR_IA32_MISC_ENABLE is core for below processor type, only program
// MSR_IA32_MISC_ENABLE for thread 0 in each core.
//
if (IS_SILVERMONT_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_GOLDMONT_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel) ||
IS_PENTIUM_4_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel))
{
if (CpuInfo->ProcessorInfo.Location.Thread != 0) {
return RETURN_SUCCESS;
}
}
CPU_REGISTER_TABLE_TEST_THEN_WRITE_FIELD (
ProcessorNumber,
Msr,
MSR_IA32_FEATURE_CONTROL,
MSR_IA32_FEATURE_CONTROL_REGISTER,
Bits.LmceOn,
(State) ? 1 : 0
);
return RETURN_SUCCESS;
}
|
