/**
Worker function to retrieve the number of logical processor in the platform.
@param[out] NumberOfCpus Pointer to the total number of logical
processors in the system, including the BSP
and disabled APs.
@param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical
processors that exist in system, including
the BSP.
**/
VOID
GetNumberOfProcessor (
OUT UINTN *NumberOfCpus,
OUT UINTN *NumberOfEnabledProcessors
)
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
//
// Get MP Services Protocol
//
Status = PeiServicesLocatePpi (
&gEfiPeiMpServicesPpiGuid,
0,
NULL,
(VOID **)&CpuMpPpi
);
ASSERT_EFI_ERROR (Status);
//
// Get the number of CPUs
//
Status = CpuMpPpi->GetNumberOfProcessors (
GetPeiServicesTablePointer (),
CpuMpPpi,
NumberOfCpus,
NumberOfEnabledProcessors
);
ASSERT_EFI_ERROR (Status);
}
/**
Worker function to retrieve the number of logical processor in the platform.
@param[out] NumberOfCpus Pointer to the total number of logical
processors in the system, including the BSP
and disabled APs.
@param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical
processors that exist in system, including
the BSP.
**/
VOID
GetNumberOfProcessor (
OUT UINTN *NumberOfCpus,
OUT UINTN *NumberOfEnabledProcessors
)
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
CPU_FEATURES_DATA *CpuFeaturesData;
CpuFeaturesData = GetCpuFeaturesData ();
CpuMpPpi = CpuFeaturesData->MpService.Ppi;
//
// Get the number of CPUs
//
Status = CpuMpPpi->GetNumberOfProcessors (
GetPeiServicesTablePointer (),
CpuMpPpi,
NumberOfCpus,
NumberOfEnabledProcessors
);
ASSERT_EFI_ERROR (Status);
}
/**
Allocates ACPI NVS memory to save ACPI_CPU_DATA.
@return Pointer to allocated ACPI_CPU_DATA.
**/
ACPI_CPU_DATA *
AllocateAcpiCpuData (
VOID
)
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
UINTN NumberOfCpus;
UINTN NumberOfEnabledProcessors;
ACPI_CPU_DATA *AcpiCpuData;
EFI_PHYSICAL_ADDRESS Address;
UINTN TableSize;
CPU_REGISTER_TABLE *RegisterTable;
UINTN Index;
EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;
Status = PeiServicesAllocatePages (
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (sizeof (ACPI_CPU_DATA)),
&Address
);
ASSERT_EFI_ERROR (Status);
AcpiCpuData = (ACPI_CPU_DATA *) (UINTN) Address;
ASSERT (AcpiCpuData != NULL);
//
// Get MP Services Protocol
//
Status = PeiServicesLocatePpi (
&gEfiPeiMpServicesPpiGuid,
0,
NULL,
(VOID **)&CpuMpPpi
);
ASSERT_EFI_ERROR (Status);
//
// Get the number of CPUs
//
Status = CpuMpPpi->GetNumberOfProcessors (
GetPeiServicesTablePointer (),
CpuMpPpi,
&NumberOfCpus,
&NumberOfEnabledProcessors
);
ASSERT_EFI_ERROR (Status);
AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;
//
// Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs
//
TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);
Status = PeiServicesAllocatePages (
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (TableSize),
&Address
);
ASSERT_EFI_ERROR (Status);
RegisterTable = (CPU_REGISTER_TABLE *) (UINTN) Address;
for (Index = 0; Index < NumberOfCpus; Index++) {
Status = CpuMpPpi->GetProcessorInfo (
GetPeiServicesTablePointer (),
CpuMpPpi,
Index,
&ProcessorInfoBuffer
);
ASSERT_EFI_ERROR (Status);
RegisterTable[Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
RegisterTable[Index].TableLength = 0;
RegisterTable[Index].AllocatedSize = 0;
RegisterTable[Index].RegisterTableEntry = 0;
RegisterTable[NumberOfCpus + Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
RegisterTable[NumberOfCpus + Index].TableLength = 0;
RegisterTable[NumberOfCpus + Index].AllocatedSize = 0;
RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;
}
AcpiCpuData->RegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;
AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);
return AcpiCpuData;
}
