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UefiCpuPkg/CpuCommonFeaturesLib: Merge machine check code to same file. 

Original code about Local Machine Check exception feature saves in a
discrete file, because features related to machine check architecture
all saved in MachineCheck.c file. This patch moved LMCE logic to same
file for easy maintenance.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Eric Dong 2017-08-17 11:40:38 +08:00
parent ac40197558
commit 306a5bcc6b
2 changed files with 81 additions and 1 deletions
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1
UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf
View File

@ -48,7 +48,6 @@
PendingBreak.c PendingBreak.c
X2Apic.c X2Apic.c
Ppin.c Ppin.c
Lmce.c
ProcTrace.c ProcTrace.c
[Packages] [Packages]

81
UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c
View File

@ -229,3 +229,84 @@ McgCtlInitialize (
return RETURN_SUCCESS; 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 ((EFI_D_INFO, "LMCE eanble = %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
)
{
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.LmceOn,
(State) ? 1 : 0
);
}
return RETURN_SUCCESS;
}