80c4b23638
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
232 lines
8.3 KiB
C
232 lines
8.3 KiB
C
/** @file
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Machine Check features.
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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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Detects if Machine Check Exception 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 Machine Check Exception feature is supported.
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@retval FALSE Machine Check Exception 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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MceSupport (
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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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return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCE == 1);
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}
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/**
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Initializes Machine Check Exception 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 Machine Check Exception feature must be enabled.
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If FALSE, then the Machine Check Exception feature must be disabled.
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@retval RETURN_SUCCESS Machine Check Exception 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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MceInitialize (
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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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//
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// Set MCE bit in CR4
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//
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CPU_REGISTER_TABLE_WRITE_FIELD (
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ProcessorNumber,
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ControlRegister,
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4,
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IA32_CR4,
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Bits.MCE,
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(State) ? 1 : 0
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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 Machine Check Architecture 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 Machine Check Architecture feature is supported.
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@retval FALSE Machine Check Architecture 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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McaSupport (
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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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return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCA == 1);
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}
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/**
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Initializes Machine Check Architecture 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 Machine Check Architecture feature must be enabled.
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If FALSE, then the Machine Check Architecture feature must be disabled.
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@retval RETURN_SUCCESS Machine Check Architecture 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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McaInitialize (
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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_MCG_CAP_REGISTER McgCap;
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UINT32 BankIndex;
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McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
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for (BankIndex = 0; BankIndex < (UINT32) McgCap.Bits.Count; BankIndex++) {
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CPU_REGISTER_TABLE_WRITE64 (
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ProcessorNumber,
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Msr,
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MSR_IA32_MC0_CTL + BankIndex * 4,
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MAX_UINT64
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);
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}
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if (PcdGetBool (PcdIsPowerOnReset)) {
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for (BankIndex = 0; BankIndex < (UINTN) McgCap.Bits.Count; BankIndex++) {
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CPU_REGISTER_TABLE_WRITE64 (
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ProcessorNumber,
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Msr,
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MSR_IA32_MC0_STATUS + BankIndex * 4,
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0
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);
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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 IA32_MCG_CTL 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 IA32_MCG_CTL feature is supported.
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@retval FALSE IA32_MCG_CTL 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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McgCtlSupport (
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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_MCG_CAP_REGISTER McgCap;
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if (!McaSupport (ProcessorNumber, CpuInfo, ConfigData)) {
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return FALSE;
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}
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McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
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return (McgCap.Bits.MCG_CTL_P == 1);
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}
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/**
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Initializes IA32_MCG_CTL 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 IA32_MCG_CTL feature must be enabled.
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If FALSE, then the IA32_MCG_CTL feature must be disabled.
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@retval RETURN_SUCCESS IA32_MCG_CTL 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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McgCtlInitialize (
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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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CPU_REGISTER_TABLE_WRITE64 (
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ProcessorNumber,
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Msr,
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MSR_IA32_MCG_CTL,
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(State)? MAX_UINT64 : 0
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);
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return RETURN_SUCCESS;
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}
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