/** @file\r
CPU PEI Module installs CPU Multiple Processor PPI.\r
\r
- Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "CpuMpPei.h"\r
\r
//\r
-// Global Descriptor Table (GDT)\r
+// CPU MP PPI to be installed\r
//\r
-GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT mGdtEntries[] = {\r
-/* selector { Global Segment Descriptor } */\r
-/* 0x00 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //null descriptor\r
-/* 0x08 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear data segment descriptor\r
-/* 0x10 */ {{0xffff, 0, 0, 0xf, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear code segment descriptor\r
-/* 0x18 */ {{0xffff, 0, 0, 0x3, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor\r
-/* 0x20 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system code segment descriptor\r
-/* 0x28 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor\r
-/* 0x30 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor\r
-/* 0x38 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 1, 0, 1, 0}}, //system code segment descriptor\r
-/* 0x40 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor\r
+EFI_PEI_MP_SERVICES_PPI mMpServicesPpi = {\r
+ PeiGetNumberOfProcessors,\r
+ PeiGetProcessorInfo,\r
+ PeiStartupAllAPs,\r
+ PeiStartupThisAP,\r
+ PeiSwitchBSP,\r
+ PeiEnableDisableAP,\r
+ PeiWhoAmI,\r
};\r
\r
-//\r
-// IA32 Gdt register\r
-//\r
-GLOBAL_REMOVE_IF_UNREFERENCED IA32_DESCRIPTOR mGdt = {\r
- sizeof (mGdtEntries) - 1,\r
- (UINTN) mGdtEntries\r
- };\r
-\r
-GLOBAL_REMOVE_IF_UNREFERENCED EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList = {\r
- (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
- &gEfiEndOfPeiSignalPpiGuid,\r
- CpuMpEndOfPeiCallback\r
+EFI_PEI_PPI_DESCRIPTOR mPeiCpuMpPpiDesc = {\r
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
+ &gEfiPeiMpServicesPpiGuid,\r
+ &mMpServicesPpi\r
};\r
\r
/**\r
- Sort the APIC ID of all processors.\r
-\r
- This function sorts the APIC ID of all processors so that processor number is\r
- assigned in the ascending order of APIC ID which eases MP debugging.\r
-\r
- @param PeiCpuMpData Pointer to PEI CPU MP Data\r
+ This service retrieves the number of logical processor in the platform\r
+ and the number of those logical processors that are enabled on this boot.\r
+ This service may only be called from the BSP.\r
+\r
+ This function is used to retrieve the following information:\r
+ - The number of logical processors that are present in the system.\r
+ - The number of enabled logical processors in the system at the instant\r
+ this call is made.\r
+\r
+ Because MP Service Ppi provides services to enable and disable processors\r
+ dynamically, the number of enabled logical processors may vary during the\r
+ course of a boot session.\r
+\r
+ If this service is called from an AP, then EFI_DEVICE_ERROR is returned.\r
+ If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then\r
+ EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors\r
+ is returned in NumberOfProcessors, the number of currently enabled processor\r
+ is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This Pointer to this instance of the PPI.\r
+ @param[out] NumberOfProcessors Pointer to the total number of logical processors in\r
+ the system, including the BSP and disabled APs.\r
+ @param[out] NumberOfEnabledProcessors\r
+ Number of processors in the system that are enabled.\r
+\r
+ @retval EFI_SUCCESS The number of logical processors and enabled\r
+ logical processors was retrieved.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r
+ NumberOfEnabledProcessors is NULL.\r
**/\r
-VOID\r
-SortApicId (\r
- IN PEI_CPU_MP_DATA *PeiCpuMpData\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetNumberOfProcessors (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ OUT UINTN *NumberOfProcessors,\r
+ OUT UINTN *NumberOfEnabledProcessors\r
)\r
{\r
- UINTN Index1;\r
- UINTN Index2;\r
- UINTN Index3;\r
- UINT32 ApicId;\r
- EFI_HEALTH_FLAGS Health;\r
- UINT32 ApCount;\r
-\r
- ApCount = PeiCpuMpData->CpuCount - 1;\r
-\r
- if (ApCount != 0) {\r
- for (Index1 = 0; Index1 < ApCount; Index1++) {\r
- Index3 = Index1;\r
- //\r
- // Sort key is the hardware default APIC ID\r
- //\r
- ApicId = PeiCpuMpData->CpuData[Index1].ApicId;\r
- for (Index2 = Index1 + 1; Index2 <= ApCount; Index2++) {\r
- if (ApicId > PeiCpuMpData->CpuData[Index2].ApicId) {\r
- Index3 = Index2;\r
- ApicId = PeiCpuMpData->CpuData[Index2].ApicId;\r
- }\r
- }\r
- if (Index3 != Index1) {\r
- PeiCpuMpData->CpuData[Index3].ApicId = PeiCpuMpData->CpuData[Index1].ApicId;\r
- PeiCpuMpData->CpuData[Index1].ApicId = ApicId;\r
- Health = PeiCpuMpData->CpuData[Index3].Health;\r
- PeiCpuMpData->CpuData[Index3].Health = PeiCpuMpData->CpuData[Index1].Health;\r
- PeiCpuMpData->CpuData[Index1].Health = Health;\r
- }\r
- }\r
-\r
- //\r
- // Get the processor number for the BSP\r
- //\r
- ApicId = GetInitialApicId ();\r
- for (Index1 = 0; Index1 < PeiCpuMpData->CpuCount; Index1++) {\r
- if (PeiCpuMpData->CpuData[Index1].ApicId == ApicId) {\r
- PeiCpuMpData->BspNumber = (UINT32) Index1;\r
- break;\r
- }\r
- }\r
+ if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
}\r
+\r
+ return MpInitLibGetNumberOfProcessors (\r
+ NumberOfProcessors,\r
+ NumberOfEnabledProcessors\r
+ );\r
}\r
\r
/**\r
- Get CPU MP Data pointer from the Guided HOB.\r
-\r
- @return Pointer to Pointer to PEI CPU MP Data\r
+ Gets detailed MP-related information on the requested processor at the\r
+ instant this call is made. This service may only be called from the BSP.\r
+\r
+ This service retrieves detailed MP-related information about any processor\r
+ on the platform. Note the following:\r
+ - The processor information may change during the course of a boot session.\r
+ - The information presented here is entirely MP related.\r
+\r
+ Information regarding the number of caches and their sizes, frequency of operation,\r
+ slot numbers is all considered platform-related information and is not provided\r
+ by this service.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This Pointer to this instance of the PPI.\r
+ @param[in] ProcessorNumber Pointer to the total number of logical processors in\r
+ the system, including the BSP and disabled APs.\r
+ @param[out] ProcessorInfoBuffer Number of processors in the system that are enabled.\r
+\r
+ @retval EFI_SUCCESS Processor information was returned.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r
+ @retval EFI_NOT_FOUND The processor with the handle specified by\r
+ ProcessorNumber does not exist in the platform.\r
**/\r
-PEI_CPU_MP_DATA *\r
-GetMpHobData (\r
- VOID\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetProcessorInfo (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ IN UINTN ProcessorNumber,\r
+ OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r
)\r
{\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
- VOID *DataInHob;\r
- PEI_CPU_MP_DATA *CpuMpData;\r
-\r
- CpuMpData = NULL;\r
- GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid);\r
- if (GuidHob != NULL) {\r
- DataInHob = GET_GUID_HOB_DATA (GuidHob);\r
- CpuMpData = (PEI_CPU_MP_DATA *)(*(UINTN *)DataInHob);\r
- }\r
- ASSERT (CpuMpData != NULL);\r
- return CpuMpData;\r
+ return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer, NULL);\r
}\r
\r
/**\r
- This function will be called from AP reset code if BSP uses WakeUpAP.\r
-\r
- @param ExchangeInfo Pointer to the MP exchange info buffer\r
- @param NumApsExecuting Number of curret executing AP\r
+ This service executes a caller provided function on all enabled APs. APs can\r
+ run either simultaneously or one at a time in sequence. This service supports\r
+ both blocking requests only. This service may only\r
+ be called from the BSP.\r
+\r
+ This function is used to dispatch all the enabled APs to the function specified\r
+ by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r
+ immediately and Procedure is not started on any AP.\r
+\r
+ If SingleThread is TRUE, all the enabled APs execute the function specified by\r
+ Procedure one by one, in ascending order of processor handle number. Otherwise,\r
+ all the enabled APs execute the function specified by Procedure simultaneously.\r
+\r
+ If the timeout specified by TimeoutInMicroSeconds expires before all APs return\r
+ from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r
+ are always available for further calls to EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()\r
+ and EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If FailedCpuList is not NULL, its\r
+ content points to the list of processor handle numbers in which Procedure was\r
+ terminated.\r
+\r
+ Note: It is the responsibility of the consumer of the EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()\r
+ to make sure that the nature of the code that is executed on the BSP and the\r
+ dispatched APs is well controlled. The MP Services Ppi does not guarantee\r
+ that the Procedure function is MP-safe. Hence, the tasks that can be run in\r
+ parallel are limited to certain independent tasks and well-controlled exclusive\r
+ code. PEI services and Ppis may not be called by APs unless otherwise\r
+ specified.\r
+\r
+ In blocking execution mode, BSP waits until all APs finish or\r
+ TimeoutInMicroSeconds expires.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.\r
+ @param[in] Procedure A pointer to the function to be run on enabled APs of\r
+ the system.\r
+ @param[in] SingleThread If TRUE, then all the enabled APs execute the function\r
+ specified by Procedure one by one, in ascending order\r
+ of processor handle number. If FALSE, then all the\r
+ enabled APs execute the function specified by Procedure\r
+ simultaneously.\r
+ @param[in] TimeoutInMicroSeconds\r
+ Indicates the time limit in microseconds for APs to\r
+ return from Procedure, for blocking mode only. Zero\r
+ means infinity. If the timeout expires before all APs\r
+ return from Procedure, then Procedure on the failed APs\r
+ is terminated. All enabled APs are available for next\r
+ function assigned by EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()\r
+ or EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If the\r
+ timeout expires in blocking mode, BSP returns\r
+ EFI_TIMEOUT.\r
+ @param[in] ProcedureArgument The parameter passed into Procedure for all APs.\r
+\r
+ @retval EFI_SUCCESS In blocking mode, all APs have finished before the\r
+ timeout expired.\r
+ @retval EFI_DEVICE_ERROR Caller processor is AP.\r
+ @retval EFI_NOT_STARTED No enabled APs exist in the system.\r
+ @retval EFI_NOT_READY Any enabled APs are busy.\r
+ @retval EFI_TIMEOUT In blocking mode, the timeout expired before all\r
+ enabled APs have finished.\r
+ @retval EFI_INVALID_PARAMETER Procedure is NULL.\r
**/\r
-VOID\r
+EFI_STATUS\r
EFIAPI\r
-ApCFunction (\r
- IN MP_CPU_EXCHANGE_INFO *ExchangeInfo,\r
- IN UINTN NumApsExecuting\r
+PeiStartupAllAPs (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ IN EFI_AP_PROCEDURE Procedure,\r
+ IN BOOLEAN SingleThread,\r
+ IN UINTN TimeoutInMicroSeconds,\r
+ IN VOID *ProcedureArgument OPTIONAL\r
)\r
{\r
- PEI_CPU_MP_DATA *PeiCpuMpData;\r
- UINTN ProcessorNumber;\r
- EFI_AP_PROCEDURE Procedure;\r
- UINTN BistData;\r
-\r
- PeiCpuMpData = ExchangeInfo->PeiCpuMpData;\r
- if (PeiCpuMpData->InitFlag) {\r
- //\r
- // This is first time AP wakeup, get BIST inforamtion from AP stack\r
- //\r
- BistData = *(UINTN *) (PeiCpuMpData->Buffer + NumApsExecuting * PeiCpuMpData->CpuApStackSize - sizeof (UINTN));\r
- PeiCpuMpData->CpuData[NumApsExecuting].ApicId = GetInitialApicId ();\r
- PeiCpuMpData->CpuData[NumApsExecuting].Health.Uint32 = (UINT32) BistData;\r
- //\r
- // Sync BSP's Mtrr table to all wakeup APs and load microcode on APs.\r
- //\r
- MtrrSetAllMtrrs (&PeiCpuMpData->MtrrTable);\r
- MicrocodeDetect ();\r
- } else {\r
- //\r
- // Execute AP function if AP is not disabled\r
- //\r
- GetProcessorNumber (PeiCpuMpData, &ProcessorNumber);\r
- if ((PeiCpuMpData->CpuData[ProcessorNumber].State != CpuStateDisabled) &&\r
- (PeiCpuMpData->ApFunction != 0)) {\r
- PeiCpuMpData->CpuData[ProcessorNumber].State = CpuStateBusy;\r
- Procedure = (EFI_AP_PROCEDURE)(UINTN)PeiCpuMpData->ApFunction;\r
- Procedure ((VOID *)(UINTN)PeiCpuMpData->ApFunctionArgument);\r
- PeiCpuMpData->CpuData[ProcessorNumber].State = CpuStateIdle;\r
- }\r
- }\r
-\r
- //\r
- // AP finished executing C code\r
- //\r
- InterlockedIncrement ((UINT32 *)&PeiCpuMpData->FinishedCount);\r
-\r
- AsmCliHltLoop ();\r
+ return MpInitLibStartupAllAPs (\r
+ Procedure,\r
+ SingleThread,\r
+ NULL,\r
+ TimeoutInMicroSeconds,\r
+ ProcedureArgument,\r
+ NULL\r
+ );\r
}\r
\r
/**\r
- This function will be called by BSP to wakeup AP.\r
-\r
- @param PeiCpuMpData Pointer to PEI CPU MP Data\r
- @param Broadcast TRUE: Send broadcast IPI to all APs\r
- FALSE: Send IPI to AP by ApicId\r
- @param ApicId Apic ID for the processor to be waked\r
- @param Procedure The function to be invoked by AP\r
- @param ProcedureArgument The argument to be passed into AP function\r
+ This service lets the caller get one enabled AP to execute a caller-provided\r
+ function. The caller can request the BSP to wait for the completion\r
+ of the AP. This service may only be called from the BSP.\r
+\r
+ This function is used to dispatch one enabled AP to the function specified by\r
+ Procedure passing in the argument specified by ProcedureArgument.\r
+ The execution is in blocking mode. The BSP waits until the AP finishes or\r
+ TimeoutInMicroSecondss expires.\r
+\r
+ If the timeout specified by TimeoutInMicroseconds expires before the AP returns\r
+ from Procedure, then execution of Procedure by the AP is terminated. The AP is\r
+ available for subsequent calls to EFI_PEI_MP_SERVICES_PPI.StartupAllAPs() and\r
+ EFI_PEI_MP_SERVICES_PPI.StartupThisAP().\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.\r
+ @param[in] Procedure A pointer to the function to be run on enabled APs of\r
+ the system.\r
+ @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the\r
+ total number of logical processors minus 1. The total\r
+ number of logical processors can be retrieved by\r
+ EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().\r
+ @param[in] TimeoutInMicroseconds\r
+ Indicates the time limit in microseconds for APs to\r
+ return from Procedure, for blocking mode only. Zero\r
+ means infinity. If the timeout expires before all APs\r
+ return from Procedure, then Procedure on the failed APs\r
+ is terminated. All enabled APs are available for next\r
+ function assigned by EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()\r
+ or EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If the\r
+ timeout expires in blocking mode, BSP returns\r
+ EFI_TIMEOUT.\r
+ @param[in] ProcedureArgument The parameter passed into Procedure for all APs.\r
+\r
+ @retval EFI_SUCCESS In blocking mode, specified AP finished before the\r
+ timeout expires.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_TIMEOUT In blocking mode, the timeout expired before the\r
+ specified AP has finished.\r
+ @retval EFI_NOT_FOUND The processor with the handle specified by\r
+ ProcessorNumber does not exist.\r
+ @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r
+ @retval EFI_INVALID_PARAMETER Procedure is NULL.\r
**/\r
-VOID\r
-WakeUpAP (\r
- IN PEI_CPU_MP_DATA *PeiCpuMpData,\r
- IN BOOLEAN Broadcast,\r
- IN UINT32 ApicId,\r
- IN EFI_AP_PROCEDURE Procedure, OPTIONAL\r
- IN VOID *ProcedureArgument OPTIONAL\r
+EFI_STATUS\r
+EFIAPI\r
+PeiStartupThisAP (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ IN EFI_AP_PROCEDURE Procedure,\r
+ IN UINTN ProcessorNumber,\r
+ IN UINTN TimeoutInMicroseconds,\r
+ IN VOID *ProcedureArgument OPTIONAL\r
)\r
{\r
- volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;\r
-\r
- PeiCpuMpData->ApFunction = (UINTN) Procedure;\r
- PeiCpuMpData->ApFunctionArgument = (UINTN) ProcedureArgument;\r
- PeiCpuMpData->FinishedCount = 0;\r
-\r
- ExchangeInfo = PeiCpuMpData->MpCpuExchangeInfo;\r
- ExchangeInfo->Lock = 0;\r
- ExchangeInfo->StackStart = PeiCpuMpData->Buffer;\r
- ExchangeInfo->StackSize = PeiCpuMpData->CpuApStackSize;\r
- ExchangeInfo->BufferStart = PeiCpuMpData->WakeupBuffer;\r
- ExchangeInfo->PmodeOffset = PeiCpuMpData->AddressMap.PModeEntryOffset;\r
- ExchangeInfo->LmodeOffset = PeiCpuMpData->AddressMap.LModeEntryOffset;\r
- ExchangeInfo->Cr3 = AsmReadCr3 ();\r
- ExchangeInfo->CFunction = (UINTN) ApCFunction;\r
- ExchangeInfo->NumApsExecuting = 0;\r
- ExchangeInfo->PeiCpuMpData = PeiCpuMpData;\r
-\r
- //\r
- // Get the BSP's data of GDT and IDT\r
- //\r
- CopyMem ((VOID *)&ExchangeInfo->GdtrProfile, &mGdt, sizeof(mGdt));\r
- AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);\r
-\r
- if (Broadcast) {\r
- SendInitSipiSipiAllExcludingSelf ((UINT32) ExchangeInfo->BufferStart);\r
- } else {\r
- SendInitSipiSipi (ApicId, (UINT32) ExchangeInfo->BufferStart);\r
- }\r
-\r
- return ;\r
+ return MpInitLibStartupThisAP (\r
+ Procedure,\r
+ ProcessorNumber,\r
+ NULL,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ NULL\r
+ );\r
}\r
\r
/**\r
- Get available system memory below 1MB by specified size.\r
-\r
- @param WakeupBufferSize Wakeup buffer size required\r
-\r
- @retval other Return wakeup buffer address below 1MB.\r
- @retval -1 Cannot find free memory below 1MB.\r
+ This service switches the requested AP to be the BSP from that point onward.\r
+ This service changes the BSP for all purposes. This call can only be performed\r
+ by the current BSP.\r
+\r
+ This service switches the requested AP to be the BSP from that point onward.\r
+ This service changes the BSP for all purposes. The new BSP can take over the\r
+ execution of the old BSP and continue seamlessly from where the old one left\r
+ off.\r
+\r
+ If the BSP cannot be switched prior to the return from this service, then\r
+ EFI_UNSUPPORTED must be returned.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.\r
+ @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the\r
+ total number of logical processors minus 1. The total\r
+ number of logical processors can be retrieved by\r
+ EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().\r
+ @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an enabled\r
+ AP. Otherwise, it will be disabled.\r
+\r
+ @retval EFI_SUCCESS BSP successfully switched.\r
+ @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to this\r
+ service returning.\r
+ @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_NOT_FOUND The processor with the handle specified by\r
+ ProcessorNumber does not exist.\r
+ @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or a disabled\r
+ AP.\r
+ @retval EFI_NOT_READY The specified AP is busy.\r
**/\r
-UINTN\r
-GetWakeupBuffer (\r
- IN UINTN WakeupBufferSize\r
+EFI_STATUS\r
+EFIAPI\r
+PeiSwitchBSP (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ IN UINTN ProcessorNumber,\r
+ IN BOOLEAN EnableOldBSP\r
)\r
{\r
- EFI_PEI_HOB_POINTERS Hob;\r
- UINTN WakeupBufferStart;\r
- UINTN WakeupBufferEnd;\r
-\r
- //\r
- // Get the HOB list for processing\r
- //\r
- Hob.Raw = GetHobList ();\r
-\r
- //\r
- // Collect memory ranges\r
- //\r
- while (!END_OF_HOB_LIST (Hob)) {\r
- if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
- if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) &&\r
- (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r
- ((Hob.ResourceDescriptor->ResourceAttribute &\r
- (EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |\r
- EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED\r
- )) == 0)\r
- ) {\r
- //\r
- // Need memory under 1MB to be collected here\r
- //\r
- WakeupBufferEnd = (UINTN) (Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength);\r
- if (WakeupBufferEnd > BASE_1MB) {\r
- //\r
- // Wakeup buffer should be under 1MB\r
- //\r
- WakeupBufferEnd = BASE_1MB;\r
- }\r
- //\r
- // Wakeup buffer should be aligned on 4KB\r
- //\r
- WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1);\r
- if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) {\r
- continue;\r
- }\r
- //\r
- // Create a memory allocation HOB.\r
- //\r
- BuildMemoryAllocationHob (\r
- WakeupBufferStart,\r
- WakeupBufferSize,\r
- EfiBootServicesData\r
- );\r
- return WakeupBufferStart;\r
- }\r
- }\r
- //\r
- // Find the next HOB\r
- //\r
- Hob.Raw = GET_NEXT_HOB (Hob);\r
- }\r
-\r
- return (UINTN) -1;\r
+ return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP);\r
}\r
\r
/**\r
- Get available system memory below 1MB by specified size.\r
+ This service lets the caller enable or disable an AP from this point onward.\r
+ This service may only be called from the BSP.\r
+\r
+ This service allows the caller enable or disable an AP from this point onward.\r
+ The caller can optionally specify the health status of the AP by Health. If\r
+ an AP is being disabled, then the state of the disabled AP is implementation\r
+ dependent. If an AP is enabled, then the implementation must guarantee that a\r
+ complete initialization sequence is performed on the AP, so the AP is in a state\r
+ that is compatible with an MP operating system.\r
+\r
+ If the enable or disable AP operation cannot be completed prior to the return\r
+ from this service, then EFI_UNSUPPORTED must be returned.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.\r
+ @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the\r
+ total number of logical processors minus 1. The total\r
+ number of logical processors can be retrieved by\r
+ EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().\r
+ @param[in] EnableAP Specifies the new state for the processor for enabled,\r
+ FALSE for disabled.\r
+ @param[in] HealthFlag If not NULL, a pointer to a value that specifies the\r
+ new health status of the AP. This flag corresponds to\r
+ StatusFlag defined in EFI_PEI_MP_SERVICES_PPI.GetProcessorInfo().\r
+ Only the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r
+ bits are ignored. If it is NULL, this parameter is\r
+ ignored.\r
+\r
+ @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r
+ @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed prior\r
+ to this service returning.\r
+ @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r
+ does not exist.\r
+ @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+PeiEnableDisableAP (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ IN UINTN ProcessorNumber,\r
+ IN BOOLEAN EnableAP,\r
+ IN UINT32 *HealthFlag OPTIONAL\r
+ )\r
+{\r
+ return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag);\r
+}\r
\r
- @param PeiCpuMpData Pointer to PEI CPU MP Data\r
+/**\r
+ This return the handle number for the calling processor. This service may be\r
+ called from the BSP and APs.\r
+\r
+ This service returns the processor handle number for the calling processor.\r
+ The returned value is in the range from 0 to the total number of logical\r
+ processors minus 1. The total number of logical processors can be retrieved\r
+ with EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors(). This service may be\r
+ called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER\r
+ is returned. Otherwise, the current processors handle number is returned in\r
+ ProcessorNumber, and EFI_SUCCESS is returned.\r
+\r
+ @param[in] PeiServices An indirect pointer to the PEI Services Table\r
+ published by the PEI Foundation.\r
+ @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.\r
+ @param[out] ProcessorNumber The handle number of the AP. The range is from 0 to the\r
+ total number of logical processors minus 1. The total\r
+ number of logical processors can be retrieved by\r
+ EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().\r
+\r
+ @retval EFI_SUCCESS The current processor handle number was returned in\r
+ ProcessorNumber.\r
+ @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r
**/\r
-VOID\r
-BackupAndPrepareWakeupBuffer(\r
- IN PEI_CPU_MP_DATA *PeiCpuMpData\r
+EFI_STATUS\r
+EFIAPI\r
+PeiWhoAmI (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_MP_SERVICES_PPI *This,\r
+ OUT UINTN *ProcessorNumber\r
)\r
{\r
- CopyMem (\r
- (VOID *) PeiCpuMpData->BackupBuffer,\r
- (VOID *) PeiCpuMpData->WakeupBuffer,\r
- PeiCpuMpData->BackupBufferSize\r
- );\r
- CopyMem (\r
- (VOID *) PeiCpuMpData->WakeupBuffer,\r
- (VOID *) PeiCpuMpData->AddressMap.RendezvousFunnelAddress,\r
- PeiCpuMpData->AddressMap.RendezvousFunnelSize\r
- );\r
+ return MpInitLibWhoAmI (ProcessorNumber);\r
}\r
\r
/**\r
- Restore wakeup buffer data.\r
+ Get GDT register value.\r
+\r
+ This function is mainly for AP purpose because AP may have different GDT\r
+ table than BSP.\r
+\r
+ @param[in,out] Buffer The pointer to private data buffer.\r
\r
- @param PeiCpuMpData Pointer to PEI CPU MP Data\r
**/\r
VOID\r
-RestoreWakeupBuffer(\r
- IN PEI_CPU_MP_DATA *PeiCpuMpData\r
+EFIAPI\r
+GetGdtr (\r
+ IN OUT VOID *Buffer\r
)\r
{\r
- CopyMem ((VOID *) PeiCpuMpData->WakeupBuffer, (VOID *) PeiCpuMpData->BackupBuffer, PeiCpuMpData->BackupBufferSize);\r
+ AsmReadGdtr ((IA32_DESCRIPTOR *)Buffer);\r
}\r
\r
/**\r
- This function will get CPU count in the system.\r
+ Initializes CPU exceptions handlers for the sake of stack switch requirement.\r
+\r
+ This function is a wrapper of InitializeCpuExceptionHandlersEx. It's mainly\r
+ for the sake of AP's init because of EFI_AP_PROCEDURE API requirement.\r
\r
- @param PeiCpuMpData Pointer to PEI CPU MP Data\r
+ @param[in,out] Buffer The pointer to private data buffer.\r
\r
- @return AP processor count\r
**/\r
-UINT32\r
-CountProcessorNumber (\r
- IN PEI_CPU_MP_DATA *PeiCpuMpData\r
+VOID\r
+EFIAPI\r
+InitializeExceptionStackSwitchHandlers (\r
+ IN OUT VOID *Buffer\r
)\r
{\r
+ CPU_EXCEPTION_INIT_DATA *EssData;\r
+ IA32_DESCRIPTOR Idtr;\r
+ EFI_STATUS Status;\r
+\r
+ EssData = Buffer;\r
//\r
- // Load Microcode on BSP\r
- //\r
- MicrocodeDetect ();\r
- //\r
- // Store BSP's MTRR setting\r
- //\r
- MtrrGetAllMtrrs (&PeiCpuMpData->MtrrTable);\r
- //\r
- // Send broadcast IPI to APs to wakeup APs\r
- //\r
- PeiCpuMpData->InitFlag = 1;\r
- WakeUpAP (PeiCpuMpData, TRUE, 0, NULL, NULL);\r
- //\r
- // Wait for AP task to complete and then exit.\r
- //\r
- MicroSecondDelay (PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds));\r
- PeiCpuMpData->InitFlag = 0;\r
- PeiCpuMpData->CpuCount += (UINT32) PeiCpuMpData->MpCpuExchangeInfo->NumApsExecuting;\r
- //\r
- // Sort BSP/Aps by CPU APIC ID in ascending order\r
+ // We don't plan to replace IDT table with a new one, but we should not assume\r
+ // the AP's IDT is the same as BSP's IDT either.\r
//\r
- SortApicId (PeiCpuMpData);\r
-\r
- DEBUG ((EFI_D_INFO, "CpuMpPei: Find %d processors in system.\n", PeiCpuMpData->CpuCount));\r
- return PeiCpuMpData->CpuCount;\r
+ AsmReadIdtr (&Idtr);\r
+ EssData->Ia32.IdtTable = (VOID *)Idtr.Base;\r
+ EssData->Ia32.IdtTableSize = Idtr.Limit + 1;\r
+ Status = InitializeCpuExceptionHandlersEx (NULL, EssData);\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
\r
/**\r
- Prepare for AP wakeup buffer and copy AP reset code into it.\r
+ Initializes MP exceptions handlers for the sake of stack switch requirement.\r
\r
- Get wakeup buffer below 1MB. Allocate memory for CPU MP Data and APs Stack.\r
+ This function will allocate required resources required to setup stack switch\r
+ and pass them through CPU_EXCEPTION_INIT_DATA to each logic processor.\r
\r
- @return Pointer to PEI CPU MP Data\r
**/\r
-PEI_CPU_MP_DATA *\r
-PrepareAPStartupVector (\r
+VOID\r
+InitializeMpExceptionStackSwitchHandlers (\r
VOID\r
)\r
{\r
- EFI_STATUS Status;\r
- UINT32 MaxCpuCount;\r
- PEI_CPU_MP_DATA *PeiCpuMpData;\r
- EFI_PHYSICAL_ADDRESS Buffer;\r
- UINTN BufferSize;\r
- UINTN WakeupBuffer;\r
- UINTN WakeupBufferSize;\r
- MP_ASSEMBLY_ADDRESS_MAP AddressMap;\r
-\r
- AsmGetAddressMap (&AddressMap);\r
- WakeupBufferSize = AddressMap.RendezvousFunnelSize + sizeof (MP_CPU_EXCHANGE_INFO);\r
- WakeupBuffer = GetWakeupBuffer ((WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1));\r
- ASSERT (WakeupBuffer != (UINTN) -1);\r
- DEBUG ((EFI_D_INFO, "CpuMpPei: WakeupBuffer = 0x%x\n", WakeupBuffer));\r
+ EFI_STATUS Status;\r
+ UINTN Index;\r
+ UINTN Bsp;\r
+ UINTN ExceptionNumber;\r
+ UINTN OldGdtSize;\r
+ UINTN NewGdtSize;\r
+ UINTN NewStackSize;\r
+ IA32_DESCRIPTOR Gdtr;\r
+ CPU_EXCEPTION_INIT_DATA EssData;\r
+ UINT8 *GdtBuffer;\r
+ UINT8 *StackTop;\r
+ UINTN NumberOfProcessors;\r
+\r
+ if (!PcdGetBool (PcdCpuStackGuard)) {\r
+ return;\r
+ }\r
+\r
+ MpInitLibGetNumberOfProcessors(&NumberOfProcessors, NULL);\r
+ MpInitLibWhoAmI (&Bsp);\r
+\r
+ ExceptionNumber = FixedPcdGetSize (PcdCpuStackSwitchExceptionList);\r
+ NewStackSize = FixedPcdGet32 (PcdCpuKnownGoodStackSize) * ExceptionNumber;\r
+\r
+ Status = PeiServicesAllocatePool (\r
+ NewStackSize * NumberOfProcessors,\r
+ (VOID **)&StackTop\r
+ );\r
+ ASSERT(StackTop != NULL);\r
+ if (EFI_ERROR (Status)) {\r
+ ASSERT_EFI_ERROR (Status);\r
+ return;\r
+ }\r
+ StackTop += NewStackSize * NumberOfProcessors;\r
\r
//\r
- // Allocate Pages for APs stack, CPU MP Data and backup buffer for wakeup buffer\r
+ // The default exception handlers must have been initialized. Let's just skip\r
+ // it in this method.\r
//\r
- MaxCpuCount = PcdGet32(PcdCpuMaxLogicalProcessorNumber);\r
- BufferSize = PcdGet32 (PcdCpuApStackSize) * MaxCpuCount + sizeof (PEI_CPU_MP_DATA)\r
- + WakeupBufferSize + sizeof (PEI_CPU_DATA) * MaxCpuCount;\r
- Status = PeiServicesAllocatePages (\r
- EfiBootServicesData,\r
- EFI_SIZE_TO_PAGES (BufferSize),\r
- &Buffer\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
+ EssData.Ia32.Revision = CPU_EXCEPTION_INIT_DATA_REV;\r
+ EssData.Ia32.InitDefaultHandlers = FALSE;\r
\r
- PeiCpuMpData = (PEI_CPU_MP_DATA *) (UINTN) (Buffer + PcdGet32 (PcdCpuApStackSize) * MaxCpuCount);\r
- PeiCpuMpData->Buffer = (UINTN) Buffer;\r
- PeiCpuMpData->CpuApStackSize = PcdGet32 (PcdCpuApStackSize);\r
- PeiCpuMpData->WakeupBuffer = WakeupBuffer;\r
- PeiCpuMpData->BackupBuffer = (UINTN)PeiCpuMpData + sizeof (PEI_CPU_MP_DATA);\r
- PeiCpuMpData->BackupBufferSize = WakeupBufferSize;\r
- PeiCpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN) (WakeupBuffer + AddressMap.RendezvousFunnelSize);\r
-\r
- PeiCpuMpData->CpuCount = 1;\r
- PeiCpuMpData->BspNumber = 0;\r
- PeiCpuMpData->CpuData = (PEI_CPU_DATA *) (PeiCpuMpData->MpCpuExchangeInfo + 1);\r
- PeiCpuMpData->CpuData[0].ApicId = GetInitialApicId ();\r
- PeiCpuMpData->CpuData[0].Health.Uint32 = 0;\r
- PeiCpuMpData->EndOfPeiFlag = FALSE;\r
- CopyMem (&PeiCpuMpData->AddressMap, &AddressMap, sizeof (MP_ASSEMBLY_ADDRESS_MAP));\r
+ EssData.Ia32.StackSwitchExceptions = FixedPcdGetPtr(PcdCpuStackSwitchExceptionList);\r
+ EssData.Ia32.StackSwitchExceptionNumber = ExceptionNumber;\r
+ EssData.Ia32.KnownGoodStackSize = FixedPcdGet32(PcdCpuKnownGoodStackSize);\r
\r
//\r
- // Backup original data and copy AP reset code in it\r
+ // Initialize Gdtr to suppress incorrect compiler/analyzer warnings.\r
//\r
- BackupAndPrepareWakeupBuffer(PeiCpuMpData);\r
+ Gdtr.Base = 0;\r
+ Gdtr.Limit = 0;\r
+ for (Index = 0; Index < NumberOfProcessors; ++Index) {\r
+ //\r
+ // To support stack switch, we need to re-construct GDT but not IDT.\r
+ //\r
+ if (Index == Bsp) {\r
+ GetGdtr(&Gdtr);\r
+ } else {\r
+ //\r
+ // AP might have different size of GDT from BSP.\r
+ //\r
+ MpInitLibStartupThisAP (GetGdtr, Index, NULL, 0, (VOID *)&Gdtr, NULL);\r
+ }\r
+\r
+ //\r
+ // X64 needs only one TSS of current task working for all exceptions\r
+ // because of its IST feature. IA32 needs one TSS for each exception\r
+ // in addition to current task. Since AP is not supposed to allocate\r
+ // memory, we have to do it in BSP. To simplify the code, we allocate\r
+ // memory for IA32 case to cover both IA32 and X64 exception stack\r
+ // switch.\r
+ //\r
+ // Layout of memory to allocate for each processor:\r
+ // --------------------------------\r
+ // | Alignment | (just in case)\r
+ // --------------------------------\r
+ // | |\r
+ // | Original GDT |\r
+ // | |\r
+ // --------------------------------\r
+ // | Current task descriptor |\r
+ // --------------------------------\r
+ // | |\r
+ // | Exception task descriptors | X ExceptionNumber\r
+ // | |\r
+ // --------------------------------\r
+ // | Current task-state segment |\r
+ // --------------------------------\r
+ // | |\r
+ // | Exception task-state segment | X ExceptionNumber\r
+ // | |\r
+ // --------------------------------\r
+ //\r
+ OldGdtSize = Gdtr.Limit + 1;\r
+ EssData.Ia32.ExceptionTssDescSize = sizeof (IA32_TSS_DESCRIPTOR) *\r
+ (ExceptionNumber + 1);\r
+ EssData.Ia32.ExceptionTssSize = sizeof (IA32_TASK_STATE_SEGMENT) *\r
+ (ExceptionNumber + 1);\r
+ NewGdtSize = sizeof (IA32_TSS_DESCRIPTOR) +\r
+ OldGdtSize +\r
+ EssData.Ia32.ExceptionTssDescSize +\r
+ EssData.Ia32.ExceptionTssSize;\r
+\r
+ Status = PeiServicesAllocatePool (\r
+ NewGdtSize,\r
+ (VOID **)&GdtBuffer\r
+ );\r
+ ASSERT (GdtBuffer != NULL);\r
+ if (EFI_ERROR (Status)) {\r
+ ASSERT_EFI_ERROR (Status);\r
+ return;\r
+ }\r
+\r
+ //\r
+ // Make sure GDT table alignment\r
+ //\r
+ EssData.Ia32.GdtTable = ALIGN_POINTER(GdtBuffer, sizeof (IA32_TSS_DESCRIPTOR));\r
+ NewGdtSize -= ((UINT8 *)EssData.Ia32.GdtTable - GdtBuffer);\r
+ EssData.Ia32.GdtTableSize = NewGdtSize;\r
+\r
+ EssData.Ia32.ExceptionTssDesc = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize);\r
+ EssData.Ia32.ExceptionTss = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize +\r
+ EssData.Ia32.ExceptionTssDescSize);\r
+\r
+ EssData.Ia32.KnownGoodStackTop = (UINTN)StackTop;\r
+ DEBUG ((DEBUG_INFO,\r
+ "Exception stack top[cpu%lu]: 0x%lX\n",\r
+ (UINT64)(UINTN)Index,\r
+ (UINT64)(UINTN)StackTop));\r
+\r
+ if (Index == Bsp) {\r
+ InitializeExceptionStackSwitchHandlers (&EssData);\r
+ } else {\r
+ MpInitLibStartupThisAP (\r
+ InitializeExceptionStackSwitchHandlers,\r
+ Index,\r
+ NULL,\r
+ 0,\r
+ (VOID *)&EssData,\r
+ NULL\r
+ );\r
+ }\r
\r
- return PeiCpuMpData;\r
+ StackTop -= NewStackSize;\r
+ }\r
}\r
\r
/**\r
- Notify function on End Of Pei PPI.\r
-\r
- On S3 boot, this function will restore wakeup buffer data.\r
- On normal boot, this function will flag wakeup buffer to be un-used type.\r
+ Initializes MP and exceptions handlers.\r
\r
- @param PeiServices The pointer to the PEI Services Table.\r
- @param NotifyDescriptor Address of the notification descriptor data structure.\r
- @param Ppi Address of the PPI that was installed.\r
+ @param PeiServices The pointer to the PEI Services Table.\r
\r
- @retval EFI_SUCCESS When everything is OK.\r
+ @retval EFI_SUCCESS MP was successfully initialized.\r
+ @retval others Error occurred in MP initialization.\r
\r
**/\r
EFI_STATUS\r
-EFIAPI\r
-CpuMpEndOfPeiCallback (\r
- IN EFI_PEI_SERVICES **PeiServices,\r
- IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r
- IN VOID *Ppi\r
+InitializeCpuMpWorker (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_BOOT_MODE BootMode;\r
- PEI_CPU_MP_DATA *PeiCpuMpData;\r
- EFI_PEI_HOB_POINTERS Hob;\r
- EFI_HOB_MEMORY_ALLOCATION *MemoryHob;\r
+ EFI_STATUS Status;\r
+ EFI_VECTOR_HANDOFF_INFO *VectorInfo;\r
+ EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi;\r
\r
- DEBUG ((EFI_D_INFO, "CpuMpPei: CpuMpEndOfPeiCallback () invokded\n"));\r
-\r
- Status = PeiServicesGetBootMode (&BootMode);\r
- ASSERT_EFI_ERROR (Status);\r
+ //\r
+ // Get Vector Hand-off Info PPI\r
+ //\r
+ VectorInfo = NULL;\r
+ Status = PeiServicesLocatePpi (\r
+ &gEfiVectorHandoffInfoPpiGuid,\r
+ 0,\r
+ NULL,\r
+ (VOID **)&VectorHandoffInfoPpi\r
+ );\r
+ if (Status == EFI_SUCCESS) {\r
+ VectorInfo = VectorHandoffInfoPpi->Info;\r
+ }\r
\r
- PeiCpuMpData = GetMpHobData ();\r
- ASSERT (PeiCpuMpData != NULL);\r
+ //\r
+ // Initialize default handlers\r
+ //\r
+ Status = InitializeCpuExceptionHandlers (VectorInfo);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
\r
- if (BootMode != BOOT_ON_S3_RESUME) {\r
- //\r
- // Get the HOB list for processing\r
- //\r
- Hob.Raw = GetHobList ();\r
- //\r
- // Collect memory ranges\r
- //\r
- while (!END_OF_HOB_LIST (Hob)) {\r
- if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {\r
- MemoryHob = Hob.MemoryAllocation;\r
- if(MemoryHob->AllocDescriptor.MemoryBaseAddress == PeiCpuMpData->WakeupBuffer) {\r
- //\r
- // Flag this HOB type to un-used\r
- //\r
- GET_HOB_TYPE (Hob) = EFI_HOB_TYPE_UNUSED;\r
- break;\r
- }\r
- }\r
- Hob.Raw = GET_NEXT_HOB (Hob);\r
- }\r
- } else {\r
- RestoreWakeupBuffer (PeiCpuMpData);\r
- PeiCpuMpData->EndOfPeiFlag = TRUE;\r
+ Status = MpInitLibInitialize ();\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
}\r
- return EFI_SUCCESS;\r
+\r
+ //\r
+ // Special initialization for the sake of Stack Guard\r
+ //\r
+ InitializeMpExceptionStackSwitchHandlers ();\r
+\r
+ //\r
+ // Update and publish CPU BIST information\r
+ //\r
+ CollectBistDataFromPpi (PeiServices);\r
+\r
+ //\r
+ // Install CPU MP PPI\r
+ //\r
+ Status = PeiServicesInstallPpi(&mPeiCpuMpPpiDesc);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return Status;\r
}\r
\r
/**\r
)\r
{\r
EFI_STATUS Status;\r
- PEI_CPU_MP_DATA *PeiCpuMpData;\r
- UINT32 ProcessorCount;\r
\r
//\r
- // Load new GDT table on BSP\r
- //\r
- AsmInitializeGdt (&mGdt);\r
- //\r
- // Get wakeup buffer and copy AP reset code in it\r
- //\r
- PeiCpuMpData = PrepareAPStartupVector ();\r
- //\r
- // Count processor number and collect processor information\r
- //\r
- ProcessorCount = CountProcessorNumber (PeiCpuMpData);\r
- //\r
- // Build location of PEI CPU MP DATA buffer in HOB\r
+ // For the sake of special initialization needing to be done right after\r
+ // memory discovery.\r
//\r
- BuildGuidDataHob (\r
- &gEfiCallerIdGuid,\r
- (VOID *)&PeiCpuMpData,\r
- sizeof(UINT64)\r
- );\r
- //\r
- // Update and publish CPU BIST information\r
- //\r
- CollectBistDataFromPpi (PeiServices, PeiCpuMpData);\r
- //\r
- // register an event for EndOfPei\r
- //\r
- Status = PeiServicesNotifyPpi (&mNotifyList);\r
- ASSERT_EFI_ERROR (Status);\r
- //\r
- // Install CPU MP PPI\r
- //\r
- Status = PeiServicesInstallPpi(&mPeiCpuMpPpiDesc);\r
+ Status = PeiServicesNotifyPpi (&mPostMemNotifyList[0]);\r
ASSERT_EFI_ERROR (Status);\r
\r
return Status;\r
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