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audk/UefiCpuPkg/CpuMpPei/CpuBist.c

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/** @file
Update and publish processors' BIST information.
Copyright (c) 2015, 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 "CpuMpPei.h"
EFI_SEC_PLATFORM_INFORMATION2_PPI mSecPlatformInformation2Ppi = {
SecPlatformInformation2
};
EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformation2Ppi = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiSecPlatformInformation2PpiGuid,
&mSecPlatformInformation2Ppi
};
/**
Implementation of the PlatformInformation2 service in EFI_SEC_PLATFORM_INFORMATION2_PPI.
@param PeiServices The pointer to the PEI Services Table.
@param StructureSize The pointer to the variable describing size of the input buffer.
@param PlatformInformationRecord2 The pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD2.
@retval EFI_SUCCESS The data was successfully returned.
@retval EFI_BUFFER_TOO_SMALL The buffer was too small. The current buffer size needed to
hold the record is returned in StructureSize.
**/
EFI_STATUS
EFIAPI
SecPlatformInformation2 (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN OUT UINT64 *StructureSize,
OUT EFI_SEC_PLATFORM_INFORMATION_RECORD2 *PlatformInformationRecord2
)
{
EFI_HOB_GUID_TYPE *GuidHob;
VOID *DataInHob;
UINTN DataSize;
GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformation2PpiGuid);
if (GuidHob == NULL) {
*StructureSize = 0;
return EFI_SUCCESS;
}
DataInHob = GET_GUID_HOB_DATA (GuidHob);
DataSize = GET_GUID_HOB_DATA_SIZE (GuidHob);
//
// return the information from BistHob
//
if ((*StructureSize) < (UINT64) DataSize) {
*StructureSize = (UINT64) DataSize;
return EFI_BUFFER_TOO_SMALL;
}
*StructureSize = (UINT64) DataSize;
CopyMem (PlatformInformationRecord2, DataInHob, DataSize);
return EFI_SUCCESS;
}
/**
Worker function to get CPUs' BIST by calling SecPlatformInformationPpi
or SecPlatformInformation2Ppi.
@param PeiServices Pointer to PEI Services Table
@param Guid PPI Guid
@param PpiDescriptor Return a pointer to instance of the
EFI_PEI_PPI_DESCRIPTOR
@param BistInformationData Pointer to BIST information data
@param BistInformationSize Return the size in bytes of BIST information
@retval EFI_SUCCESS Retrieve of the BIST data successfully
@retval EFI_NOT_FOUND No sec platform information(2) ppi export
@retval EFI_DEVICE_ERROR Failed to get CPU Information
**/
EFI_STATUS
GetBistInfoFromPpi (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN CONST EFI_GUID *Guid,
OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,
OUT VOID **BistInformationData,
OUT UINT64 *BistInformationSize OPTIONAL
)
{
EFI_STATUS Status;
EFI_SEC_PLATFORM_INFORMATION2_PPI *SecPlatformInformation2Ppi;
EFI_SEC_PLATFORM_INFORMATION_RECORD2 *SecPlatformInformation2;
UINT64 InformationSize;
Status = PeiServicesLocatePpi (
Guid, // GUID
0, // INSTANCE
PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
(VOID **)&SecPlatformInformation2Ppi // PPI
);
if (Status == EFI_NOT_FOUND) {
return EFI_NOT_FOUND;
}
if (Status == EFI_SUCCESS) {
//
// Get the size of the sec platform information2(BSP/APs' BIST data)
//
InformationSize = 0;
SecPlatformInformation2 = NULL;
Status = SecPlatformInformation2Ppi->PlatformInformation2 (
PeiServices,
&InformationSize,
SecPlatformInformation2
);
if (Status == EFI_BUFFER_TOO_SMALL) {
Status = PeiServicesAllocatePool (
(UINTN) InformationSize,
(VOID **) &SecPlatformInformation2
);
if (Status == EFI_SUCCESS) {
//
// Retrieve BIST data
//
Status = SecPlatformInformation2Ppi->PlatformInformation2 (
PeiServices,
&InformationSize,
SecPlatformInformation2
);
if (Status == EFI_SUCCESS) {
*BistInformationData = SecPlatformInformation2;
if (BistInformationSize != NULL) {
*BistInformationSize = InformationSize;
}
return EFI_SUCCESS;
}
}
}
}
return EFI_DEVICE_ERROR;
}
/**
Collects BIST data from PPI.
This function collects BIST data from Sec Platform Information2 PPI
or SEC Platform Information PPI.
@param PeiServices Pointer to PEI Services Table
**/
VOID
CollectBistDataFromPpi (
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_PEI_PPI_DESCRIPTOR *SecInformationDescriptor;
EFI_SEC_PLATFORM_INFORMATION_RECORD2 *SecPlatformInformation2;
EFI_SEC_PLATFORM_INFORMATION_RECORD *SecPlatformInformation;
UINTN NumberOfData;
EFI_SEC_PLATFORM_INFORMATION_CPU *CpuInstance;
EFI_SEC_PLATFORM_INFORMATION_CPU BspCpuInstance;
UINTN ProcessorNumber;
UINTN CpuIndex;
EFI_PROCESSOR_INFORMATION ProcessorInfo;
EFI_HEALTH_FLAGS BistData;
UINTN NumberOfProcessors;
UINTN NumberOfEnabledProcessors;
UINTN BistInformationSize;
EFI_SEC_PLATFORM_INFORMATION_RECORD2 *PlatformInformationRecord2;
EFI_SEC_PLATFORM_INFORMATION_CPU *CpuInstanceInHob;
MpInitLibGetNumberOfProcessors(&NumberOfProcessors, &NumberOfEnabledProcessors);
BistInformationSize = sizeof (EFI_SEC_PLATFORM_INFORMATION_RECORD2) +
sizeof (EFI_SEC_PLATFORM_INFORMATION_CPU) * NumberOfProcessors;
Status = PeiServicesAllocatePool (
(UINTN) BistInformationSize,
(VOID **) &PlatformInformationRecord2
);
ASSERT_EFI_ERROR (Status);
PlatformInformationRecord2->NumberOfCpus = (UINT32)NumberOfProcessors;
SecPlatformInformation2 = NULL;
SecPlatformInformation = NULL;
NumberOfData = 0;
CpuInstance = NULL;
//
// Get BIST information from Sec Platform Information2 Ppi firstly
//
Status = GetBistInfoFromPpi (
PeiServices,
&gEfiSecPlatformInformation2PpiGuid,
&SecInformationDescriptor,
(VOID *) &SecPlatformInformation2,
NULL
);
if (Status == EFI_SUCCESS) {
//
// Sec Platform Information2 PPI includes BSP/APs' BIST information
//
NumberOfData = SecPlatformInformation2->NumberOfCpus;
CpuInstance = SecPlatformInformation2->CpuInstance;
} else {
//
// Otherwise, get BIST information from Sec Platform Information Ppi
//
Status = GetBistInfoFromPpi (
PeiServices,
&gEfiSecPlatformInformationPpiGuid,
&SecInformationDescriptor,
(VOID *) &SecPlatformInformation,
NULL
);
if (Status == EFI_SUCCESS) {
NumberOfData = 1;
//
// SEC Platform Information only includes BSP's BIST information
// and does not have BSP's APIC ID
//
BspCpuInstance.CpuLocation = GetInitialApicId ();
BspCpuInstance.InfoRecord.IA32HealthFlags.Uint32 = SecPlatformInformation->IA32HealthFlags.Uint32;
CpuInstance = &BspCpuInstance;
} else {
DEBUG ((EFI_D_INFO, "Does not find any stored CPU BIST information from PPI!\n"));
}
}
for (ProcessorNumber = 0; ProcessorNumber < NumberOfProcessors; ProcessorNumber ++) {
MpInitLibGetProcessorInfo (ProcessorNumber, &ProcessorInfo, &BistData);
for (CpuIndex = 0; CpuIndex < NumberOfData; CpuIndex ++) {
ASSERT (CpuInstance != NULL);
if (ProcessorInfo.ProcessorId == CpuInstance[CpuIndex].CpuLocation) {
//
// Update processor's BIST data if it is already stored before
//
BistData = CpuInstance[CpuIndex].InfoRecord.IA32HealthFlags;
}
}
if (BistData.Uint32 != 0) {
//
// Report Status Code that self test is failed
//
REPORT_STATUS_CODE (
EFI_ERROR_CODE | EFI_ERROR_MAJOR,
(EFI_COMPUTING_UNIT_HOST_PROCESSOR | EFI_CU_HP_EC_SELF_TEST)
);
}
DEBUG ((EFI_D_INFO, " APICID - 0x%08x, BIST - 0x%08x\n",
(UINT32) ProcessorInfo.ProcessorId,
BistData
));
CpuInstanceInHob = PlatformInformationRecord2->CpuInstance;
CpuInstanceInHob[ProcessorNumber].CpuLocation = (UINT32) ProcessorInfo.ProcessorId;
CpuInstanceInHob[ProcessorNumber].InfoRecord.IA32HealthFlags = BistData;
}
//
// Build SecPlatformInformation2 PPI GUIDed HOB that also could be consumed
// by CPU MP driver to get CPU BIST data
//
BuildGuidDataHob (
&gEfiSecPlatformInformation2PpiGuid,
PlatformInformationRecord2,
(UINTN) BistInformationSize
);
if (SecPlatformInformation2 != NULL && NumberOfData < NumberOfProcessors) {
//
// Reinstall SecPlatformInformation2 PPI to include new BIST information
//
Status = PeiServicesReInstallPpi (
SecInformationDescriptor,
&mPeiSecPlatformInformation2Ppi
);
ASSERT_EFI_ERROR (Status);
} else {
//
// Install SecPlatformInformation2 PPI to include new BIST information
//
Status = PeiServicesInstallPpi (&mPeiSecPlatformInformation2Ppi);
ASSERT_EFI_ERROR(Status);
}
}
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