/** @file\r
MP initialize support functions for DXE phase.\r
\r
- Copyright (c) 2016, 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) 2016 - 2020, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "MpLib.h"\r
\r
+#include <Library/UefiLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/DebugAgentLib.h>\r
+#include <Library/DxeServicesTableLib.h>\r
+#include <Library/VmgExitLib.h>\r
+#include <Register/Amd/Fam17Msr.h>\r
+#include <Register/Amd/Ghcb.h>\r
+\r
+#include <Protocol/Timer.h>\r
+\r
+#define AP_SAFE_STACK_SIZE 128\r
+\r
+CPU_MP_DATA *mCpuMpData = NULL;\r
+EFI_EVENT mCheckAllApsEvent = NULL;\r
+EFI_EVENT mMpInitExitBootServicesEvent = NULL;\r
+EFI_EVENT mLegacyBootEvent = NULL;\r
+volatile BOOLEAN mStopCheckAllApsStatus = TRUE;\r
+VOID *mReservedApLoopFunc = NULL;\r
+UINTN mReservedTopOfApStack;\r
+volatile UINT32 mNumberToFinish = 0;\r
+\r
+//\r
+// Begin wakeup buffer allocation below 0x88000\r
+//\r
+STATIC EFI_PHYSICAL_ADDRESS mSevEsDxeWakeupBuffer = 0x88000;\r
+\r
+/**\r
+ Enable Debug Agent to support source debugging on AP function.\r
+\r
+**/\r
+VOID\r
+EnableDebugAgent (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // Initialize Debug Agent to support source level debug in DXE phase\r
+ //\r
+ InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_AP, NULL, NULL);\r
+}\r
+\r
+/**\r
+ Get the pointer to CPU MP Data structure.\r
+\r
+ @return The pointer to CPU MP Data structure.\r
+**/\r
+CPU_MP_DATA *\r
+GetCpuMpData (\r
+ VOID\r
+ )\r
+{\r
+ ASSERT (mCpuMpData != NULL);\r
+ return mCpuMpData;\r
+}\r
+\r
+/**\r
+ Save the pointer to CPU MP Data structure.\r
+\r
+ @param[in] CpuMpData The pointer to CPU MP Data structure will be saved.\r
+**/\r
+VOID\r
+SaveCpuMpData (\r
+ IN CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ mCpuMpData = CpuMpData;\r
+}\r
+\r
+/**\r
+ Get available system memory below 0x88000 by specified size.\r
+\r
+ @param[in] 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
+**/\r
+UINTN\r
+GetWakeupBuffer (\r
+ IN UINTN WakeupBufferSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS StartAddress;\r
+ EFI_MEMORY_TYPE MemoryType;\r
+\r
+ if (PcdGetBool (PcdSevEsIsEnabled)) {\r
+ MemoryType = EfiReservedMemoryType;\r
+ } else {\r
+ MemoryType = EfiBootServicesData;\r
+ }\r
+\r
+ //\r
+ // Try to allocate buffer below 1M for waking vector.\r
+ // LegacyBios driver only reports warning when page allocation in range\r
+ // [0x60000, 0x88000) fails.\r
+ // This library is consumed by CpuDxe driver to produce CPU Arch protocol.\r
+ // LagacyBios driver depends on CPU Arch protocol which guarantees below\r
+ // allocation runs earlier than LegacyBios driver.\r
+ //\r
+ if (PcdGetBool (PcdSevEsIsEnabled)) {\r
+ //\r
+ // SEV-ES Wakeup buffer should be under 0x88000 and under any previous one\r
+ //\r
+ StartAddress = mSevEsDxeWakeupBuffer;\r
+ } else {\r
+ StartAddress = 0x88000;\r
+ }\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ MemoryType,\r
+ EFI_SIZE_TO_PAGES (WakeupBufferSize),\r
+ &StartAddress\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+ if (EFI_ERROR (Status)) {\r
+ StartAddress = (EFI_PHYSICAL_ADDRESS) -1;\r
+ } else if (PcdGetBool (PcdSevEsIsEnabled)) {\r
+ //\r
+ // Next SEV-ES wakeup buffer allocation must be below this allocation\r
+ //\r
+ mSevEsDxeWakeupBuffer = StartAddress;\r
+ }\r
+\r
+ DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n",\r
+ (UINTN) StartAddress, WakeupBufferSize));\r
+\r
+ return (UINTN) StartAddress;\r
+}\r
+\r
+/**\r
+ Get available EfiBootServicesCode memory below 4GB by specified size.\r
+\r
+ This buffer is required to safely transfer AP from real address mode to\r
+ protected mode or long mode, due to the fact that the buffer returned by\r
+ GetWakeupBuffer() may be marked as non-executable.\r
+\r
+ @param[in] BufferSize Wakeup transition buffer size.\r
+\r
+ @retval other Return wakeup transition buffer address below 4GB.\r
+ @retval 0 Cannot find free memory below 4GB.\r
+**/\r
+UINTN\r
+GetModeTransitionBuffer (\r
+ IN UINTN BufferSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS StartAddress;\r
+\r
+ StartAddress = BASE_4GB - 1;\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiBootServicesCode,\r
+ EFI_SIZE_TO_PAGES (BufferSize),\r
+ &StartAddress\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ StartAddress = 0;\r
+ }\r
+\r
+ return (UINTN)StartAddress;\r
+}\r
+\r
+/**\r
+ Return the address of the SEV-ES AP jump table.\r
+\r
+ This buffer is required in order for an SEV-ES guest to transition from\r
+ UEFI into an OS.\r
+\r
+ @return Return SEV-ES AP jump table buffer\r
+**/\r
+UINTN\r
+GetSevEsAPMemory (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS StartAddress;\r
+ MSR_SEV_ES_GHCB_REGISTER Msr;\r
+ GHCB *Ghcb;\r
+ BOOLEAN InterruptState;\r
+\r
+ //\r
+ // Allocate 1 page for AP jump table page\r
+ //\r
+ StartAddress = BASE_4GB - 1;\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiReservedMemoryType,\r
+ 1,\r
+ &StartAddress\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ DEBUG ((DEBUG_INFO, "Dxe: SevEsAPMemory = %lx\n", (UINTN) StartAddress));\r
+\r
+ //\r
+ // Save the SevEsAPMemory as the AP jump table.\r
+ //\r
+ Msr.GhcbPhysicalAddress = AsmReadMsr64 (MSR_SEV_ES_GHCB);\r
+ Ghcb = Msr.Ghcb;\r
+\r
+ VmgInit (Ghcb, &InterruptState);\r
+ VmgExit (Ghcb, SVM_EXIT_AP_JUMP_TABLE, 0, (UINT64) (UINTN) StartAddress);\r
+ VmgDone (Ghcb, InterruptState);\r
+\r
+ return (UINTN) StartAddress;\r
+}\r
+\r
+/**\r
+ Checks APs status and updates APs status if needed.\r
+\r
+**/\r
+VOID\r
+CheckAndUpdateApsStatus (\r
+ VOID\r
+ )\r
+{\r
+ UINTN ProcessorNumber;\r
+ EFI_STATUS Status;\r
+ CPU_MP_DATA *CpuMpData;\r
+\r
+ CpuMpData = GetCpuMpData ();\r
+\r
+ //\r
+ // First, check whether pending StartupAllAPs() exists.\r
+ //\r
+ if (CpuMpData->WaitEvent != NULL) {\r
+\r
+ Status = CheckAllAPs ();\r
+ //\r
+ // If all APs finish for StartupAllAPs(), signal the WaitEvent for it.\r
+ //\r
+ if (Status != EFI_NOT_READY) {\r
+ Status = gBS->SignalEvent (CpuMpData->WaitEvent);\r
+ CpuMpData->WaitEvent = NULL;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Second, check whether pending StartupThisAPs() callings exist.\r
+ //\r
+ for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r
+\r
+ if (CpuMpData->CpuData[ProcessorNumber].WaitEvent == NULL) {\r
+ continue;\r
+ }\r
+\r
+ Status = CheckThisAP (ProcessorNumber);\r
+\r
+ if (Status != EFI_NOT_READY) {\r
+ gBS->SignalEvent (CpuMpData->CpuData[ProcessorNumber].WaitEvent);\r
+ CpuMpData->CpuData[ProcessorNumber].WaitEvent = NULL;\r
+ }\r
+ }\r
+}\r
+\r
+/**\r
+ Checks APs' status periodically.\r
+\r
+ This function is triggered by timer periodically to check the\r
+ state of APs for StartupAllAPs() and StartupThisAP() executed\r
+ in non-blocking mode.\r
+\r
+ @param[in] Event Event triggered.\r
+ @param[in] Context Parameter passed with the event.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+CheckApsStatus (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ //\r
+ // If CheckApsStatus() is not stopped, otherwise return immediately.\r
+ //\r
+ if (!mStopCheckAllApsStatus) {\r
+ CheckAndUpdateApsStatus ();\r
+ }\r
+}\r
+\r
+/**\r
+ Get Protected mode code segment with 16-bit default addressing\r
+ from current GDT table.\r
+\r
+ @return Protected mode 16-bit code segment value.\r
+**/\r
+UINT16\r
+GetProtectedMode16CS (\r
+ VOID\r
+ )\r
+{\r
+ IA32_DESCRIPTOR GdtrDesc;\r
+ IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r
+ UINTN GdtEntryCount;\r
+ UINT16 Index;\r
+\r
+ Index = (UINT16) -1;\r
+ AsmReadGdtr (&GdtrDesc);\r
+ GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r
+ GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;\r
+ for (Index = 0; Index < GdtEntryCount; Index++) {\r
+ if (GdtEntry->Bits.L == 0) {\r
+ if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.DB == 0) {\r
+ break;\r
+ }\r
+ }\r
+ GdtEntry++;\r
+ }\r
+ ASSERT (Index != GdtEntryCount);\r
+ return Index * 8;\r
+}\r
+\r
+/**\r
+ Get Protected mode code segment from current GDT table.\r
+\r
+ @return Protected mode code segment value.\r
+**/\r
+UINT16\r
+GetProtectedModeCS (\r
+ VOID\r
+ )\r
+{\r
+ IA32_DESCRIPTOR GdtrDesc;\r
+ IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r
+ UINTN GdtEntryCount;\r
+ UINT16 Index;\r
+\r
+ AsmReadGdtr (&GdtrDesc);\r
+ GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r
+ GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;\r
+ for (Index = 0; Index < GdtEntryCount; Index++) {\r
+ if (GdtEntry->Bits.L == 0) {\r
+ if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.DB == 1) {\r
+ break;\r
+ }\r
+ }\r
+ GdtEntry++;\r
+ }\r
+ ASSERT (Index != GdtEntryCount);\r
+ return Index * 8;\r
+}\r
+\r
+/**\r
+ Do sync on APs.\r
+\r
+ @param[in, out] Buffer Pointer to private data buffer.\r
+**/\r
+VOID\r
+EFIAPI\r
+RelocateApLoop (\r
+ IN OUT VOID *Buffer\r
+ )\r
+{\r
+ CPU_MP_DATA *CpuMpData;\r
+ BOOLEAN MwaitSupport;\r
+ ASM_RELOCATE_AP_LOOP AsmRelocateApLoopFunc;\r
+ UINTN ProcessorNumber;\r
+ UINTN StackStart;\r
+\r
+ MpInitLibWhoAmI (&ProcessorNumber);\r
+ CpuMpData = GetCpuMpData ();\r
+ MwaitSupport = IsMwaitSupport ();\r
+ if (CpuMpData->SevEsIsEnabled) {\r
+ StackStart = CpuMpData->SevEsAPResetStackStart;\r
+ } else {\r
+ StackStart = mReservedTopOfApStack;\r
+ }\r
+ AsmRelocateApLoopFunc = (ASM_RELOCATE_AP_LOOP) (UINTN) mReservedApLoopFunc;\r
+ AsmRelocateApLoopFunc (\r
+ MwaitSupport,\r
+ CpuMpData->ApTargetCState,\r
+ CpuMpData->PmCodeSegment,\r
+ StackStart - ProcessorNumber * AP_SAFE_STACK_SIZE,\r
+ (UINTN) &mNumberToFinish,\r
+ CpuMpData->Pm16CodeSegment,\r
+ CpuMpData->SevEsAPBuffer,\r
+ CpuMpData->WakeupBuffer\r
+ );\r
+ //\r
+ // It should never reach here\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Callback function for ExitBootServices.\r
+\r
+ @param[in] Event Event whose notification function is being invoked.\r
+ @param[in] Context The pointer to the notification function's context,\r
+ which is implementation-dependent.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+MpInitChangeApLoopCallback (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ CPU_MP_DATA *CpuMpData;\r
+\r
+ CpuMpData = GetCpuMpData ();\r
+ CpuMpData->PmCodeSegment = GetProtectedModeCS ();\r
+ CpuMpData->Pm16CodeSegment = GetProtectedMode16CS ();\r
+ CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);\r
+ mNumberToFinish = CpuMpData->CpuCount - 1;\r
+ WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL, TRUE);\r
+ while (mNumberToFinish > 0) {\r
+ CpuPause ();\r
+ }\r
+\r
+ if (CpuMpData->SevEsIsEnabled && (CpuMpData->WakeupBuffer != (UINTN) -1)) {\r
+ //\r
+ // There are APs present. Re-use reserved memory area below 1MB from\r
+ // WakeupBuffer as the area to be used for transitioning to 16-bit mode\r
+ // in support of booting of the AP by an OS.\r
+ //\r
+ CopyMem (\r
+ (VOID *) CpuMpData->WakeupBuffer,\r
+ (VOID *) (CpuMpData->AddressMap.RendezvousFunnelAddress +\r
+ CpuMpData->AddressMap.SwitchToRealPM16ModeOffset),\r
+ CpuMpData->AddressMap.SwitchToRealPM16ModeSize\r
+ );\r
+ }\r
+\r
+ DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));\r
+}\r
+\r
+/**\r
+ Initialize global data for MP support.\r
+\r
+ @param[in] CpuMpData The pointer to CPU MP Data structure.\r
+**/\r
+VOID\r
+InitMpGlobalData (\r
+ IN CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+ UINTN ApSafeBufferSize;\r
+ UINTN Index;\r
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;\r
+ UINTN StackBase;\r
+ CPU_INFO_IN_HOB *CpuInfoInHob;\r
+\r
+ SaveCpuMpData (CpuMpData);\r
+\r
+ if (CpuMpData->CpuCount == 1) {\r
+ //\r
+ // If only BSP exists, return\r
+ //\r
+ return;\r
+ }\r
+\r
+ if (PcdGetBool (PcdCpuStackGuard)) {\r
+ //\r
+ // One extra page at the bottom of the stack is needed for Guard page.\r
+ //\r
+ if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {\r
+ DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));\r
+ ASSERT (FALSE);\r
+ }\r
+\r
+ //\r
+ // DXE will reuse stack allocated for APs at PEI phase if it's available.\r
+ // Let's check it here.\r
+ //\r
+ // Note: BSP's stack guard is set at DxeIpl phase. But for the sake of\r
+ // BSP/AP exchange, stack guard for ApTopOfStack of cpu 0 will still be\r
+ // set here.\r
+ //\r
+ CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r
+ for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {\r
+ if (CpuInfoInHob != NULL && CpuInfoInHob[Index].ApTopOfStack != 0) {\r
+ StackBase = (UINTN)CpuInfoInHob[Index].ApTopOfStack - CpuMpData->CpuApStackSize;\r
+ } else {\r
+ StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;\r
+ }\r
+\r
+ Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = gDS->SetMemorySpaceAttributes (\r
+ StackBase,\r
+ EFI_PAGES_TO_SIZE (1),\r
+ MemDesc.Attributes | EFI_MEMORY_RP\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ DEBUG ((DEBUG_INFO, "Stack Guard set at %lx [cpu%lu]!\n",\r
+ (UINT64)StackBase, (UINT64)Index));\r
+ }\r
+ }\r
+\r
+ //\r
+ // Avoid APs access invalid buffer data which allocated by BootServices,\r
+ // so we will allocate reserved data for AP loop code. We also need to\r
+ // allocate this buffer below 4GB due to APs may be transferred to 32bit\r
+ // protected mode on long mode DXE.\r
+ // Allocating it in advance since memory services are not available in\r
+ // Exit Boot Services callback function.\r
+ //\r
+ ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r
+ CpuMpData->AddressMap.RelocateApLoopFuncSize\r
+ ));\r
+ Address = BASE_4GB - 1;\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiReservedMemoryType,\r
+ EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r
+ &Address\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ mReservedApLoopFunc = (VOID *) (UINTN) Address;\r
+ ASSERT (mReservedApLoopFunc != NULL);\r
+\r
+ //\r
+ // Make sure that the buffer memory is executable if NX protection is enabled\r
+ // for EfiReservedMemoryType.\r
+ //\r
+ // TODO: Check EFI_MEMORY_XP bit set or not once it's available in DXE GCD\r
+ // service.\r
+ //\r
+ Status = gDS->GetMemorySpaceDescriptor (Address, &MemDesc);\r
+ if (!EFI_ERROR (Status)) {\r
+ gDS->SetMemorySpaceAttributes (\r
+ Address,\r
+ ApSafeBufferSize,\r
+ MemDesc.Attributes & (~EFI_MEMORY_XP)\r
+ );\r
+ }\r
+\r
+ ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r
+ CpuMpData->CpuCount * AP_SAFE_STACK_SIZE\r
+ ));\r
+ Address = BASE_4GB - 1;\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiReservedMemoryType,\r
+ EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r
+ &Address\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ mReservedTopOfApStack = (UINTN) Address + ApSafeBufferSize;\r
+ ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);\r
+ CopyMem (\r
+ mReservedApLoopFunc,\r
+ CpuMpData->AddressMap.RelocateApLoopFuncAddress,\r
+ CpuMpData->AddressMap.RelocateApLoopFuncSize\r
+ );\r
+\r
+ Status = gBS->CreateEvent (\r
+ EVT_TIMER | EVT_NOTIFY_SIGNAL,\r
+ TPL_NOTIFY,\r
+ CheckApsStatus,\r
+ NULL,\r
+ &mCheckAllApsEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Set timer to check all APs status.\r
+ //\r
+ Status = gBS->SetTimer (\r
+ mCheckAllApsEvent,\r
+ TimerPeriodic,\r
+ EFI_TIMER_PERIOD_MICROSECONDS (\r
+ PcdGet32 (PcdCpuApStatusCheckIntervalInMicroSeconds)\r
+ )\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = gBS->CreateEvent (\r
+ EVT_SIGNAL_EXIT_BOOT_SERVICES,\r
+ TPL_CALLBACK,\r
+ MpInitChangeApLoopCallback,\r
+ NULL,\r
+ &mMpInitExitBootServicesEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = gBS->CreateEventEx (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_CALLBACK,\r
+ MpInitChangeApLoopCallback,\r
+ NULL,\r
+ &gEfiEventLegacyBootGuid,\r
+ &mLegacyBootEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+}\r
+\r
/**\r
This service executes a caller provided function on all enabled APs.\r
\r
EFI_EVENT is defined in CreateEvent() in\r
the Unified Extensible Firmware Interface\r
Specification.\r
- @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
APs to return from Procedure, either for\r
blocking or non-blocking mode. Zero means\r
infinity. If the timeout expires before\r
OUT UINTN **FailedCpuList OPTIONAL\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Temporarily stop checkAllApsStatus for avoid resource dead-lock.\r
+ //\r
+ mStopCheckAllApsStatus = TRUE;\r
+\r
+ Status = StartupAllCPUsWorker (\r
+ Procedure,\r
+ SingleThread,\r
+ TRUE,\r
+ WaitEvent,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ FailedCpuList\r
+ );\r
+\r
+ //\r
+ // Start checkAllApsStatus\r
+ //\r
+ mStopCheckAllApsStatus = FALSE;\r
+\r
+ return Status;\r
}\r
\r
/**\r
EFI_EVENT is defined in CreateEvent() in\r
the Unified Extensible Firmware Interface\r
Specification.\r
- @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
this AP to finish this Procedure, either for\r
blocking or non-blocking mode. Zero means\r
infinity. If the timeout expires before\r
OUT BOOLEAN *Finished OPTIONAL\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // temporarily stop checkAllApsStatus for avoid resource dead-lock.\r
+ //\r
+ mStopCheckAllApsStatus = TRUE;\r
+\r
+ Status = StartupThisAPWorker (\r
+ Procedure,\r
+ ProcessorNumber,\r
+ WaitEvent,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ Finished\r
+ );\r
+\r
+ mStopCheckAllApsStatus = FALSE;\r
+\r
+ return Status;\r
}\r
\r
/**\r
IN BOOLEAN EnableOldBSP\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ EFI_STATUS Status;\r
+ EFI_TIMER_ARCH_PROTOCOL *Timer;\r
+ UINT64 TimerPeriod;\r
+\r
+ TimerPeriod = 0;\r
+ //\r
+ // Locate Timer Arch Protocol\r
+ //\r
+ Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **) &Timer);\r
+ if (EFI_ERROR (Status)) {\r
+ Timer = NULL;\r
+ }\r
+\r
+ if (Timer != NULL) {\r
+ //\r
+ // Save current rate of DXE Timer\r
+ //\r
+ Timer->GetTimerPeriod (Timer, &TimerPeriod);\r
+ //\r
+ // Disable DXE Timer and drain pending interrupts\r
+ //\r
+ Timer->SetTimerPeriod (Timer, 0);\r
+ }\r
+\r
+ Status = SwitchBSPWorker (ProcessorNumber, EnableOldBSP);\r
+\r
+ if (Timer != NULL) {\r
+ //\r
+ // Enable and restore rate of DXE Timer\r
+ //\r
+ Timer->SetTimerPeriod (Timer, TimerPeriod);\r
+ }\r
+\r
+ return Status;\r
}\r
\r
/**\r
IN UINT32 *HealthFlag OPTIONAL\r
)\r
{\r
+ EFI_STATUS Status;\r
+ BOOLEAN TempStopCheckState;\r
+\r
+ TempStopCheckState = FALSE;\r
+ //\r
+ // temporarily stop checkAllAPsStatus for initialize parameters.\r
+ //\r
+ if (!mStopCheckAllApsStatus) {\r
+ mStopCheckAllApsStatus = TRUE;\r
+ TempStopCheckState = TRUE;\r
+ }\r
+\r
+ Status = EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);\r
+\r
+ if (TempStopCheckState) {\r
+ mStopCheckAllApsStatus = FALSE;\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This funtion will try to invoke platform specific microcode shadow logic to\r
+ relocate microcode update patches into memory.\r
+\r
+ @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r
+\r
+ @retval EFI_SUCCESS Shadow microcode success.\r
+ @retval EFI_OUT_OF_RESOURCES No enough resource to complete the operation.\r
+ @retval EFI_UNSUPPORTED Can't find platform specific microcode shadow\r
+ PPI/Protocol.\r
+**/\r
+EFI_STATUS\r
+PlatformShadowMicrocode (\r
+ IN OUT CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ //\r
+ // There is no DXE version of platform shadow microcode protocol so far.\r
+ // A platform which only uses DxeMpInitLib instance could only supports\r
+ // the PCD based microcode shadowing.\r
+ //\r
return EFI_UNSUPPORTED;\r
}\r
projects / mirror_edk2.git / blobdiff