[mirror_edk2.git] / UefiCpuPkg / CpuS3DataDxe / CpuS3Data.c

/** @file\r
ACPI CPU Data initialization module\r
\r
This module initializes the ACPI_CPU_DATA structure and registers the address\r
of this structure in the PcdCpuS3DataAddress PCD.  This is a generic/simple\r
version of this module.  It does not provide a machine check handler or CPU\r
register initialization tables for ACPI S3 resume.  It also only supports the\r
number of CPUs reported by the MP Services Protocol, so this module does not\r
support hot plug CPUs.  This module can be copied into a CPU specific package\r
and customized if these additional features are required.\r
\r
Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>\r
Copyright (c) 2015, Red Hat, Inc.\r
\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiDxe.h>\r
\r
#include <AcpiCpuData.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/MtrrLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
\r
#include <Protocol/MpService.h>\r
#include <Guid/EventGroup.h>\r
\r
//\r
// Data structure used to allocate ACPI_CPU_DATA and its supporting structures\r
//\r
typedef struct {\r
  ACPI_CPU_DATA             AcpiCpuData;\r
  MTRR_SETTINGS             MtrrTable;\r
  IA32_DESCRIPTOR           GdtrProfile;\r
  IA32_DESCRIPTOR           IdtrProfile;\r
} ACPI_CPU_DATA_EX;\r
\r
/**\r
  Allocate EfiACPIMemoryNVS memory.\r
\r
  @param[in] Size   Size of memory to allocate.\r
\r
  @return       Allocated address for output.\r
\r
**/\r
VOID *\r
AllocateAcpiNvsMemory (\r
  IN UINTN  Size\r
  )\r
{\r
  EFI_PHYSICAL_ADDRESS  Address;\r
  EFI_STATUS            Status;\r
  VOID                  *Buffer;\r
\r
  Status  = gBS->AllocatePages (\r
                   AllocateAnyPages,\r
                   EfiACPIMemoryNVS,\r
                   EFI_SIZE_TO_PAGES (Size),\r
                   &Address\r
                   );\r
  if (EFI_ERROR (Status)) {\r
    return NULL;\r
  }\r
\r
  Buffer = (VOID *)(UINTN)Address;\r
  ZeroMem (Buffer, Size);\r
\r
  return Buffer;\r
}\r
\r
/**\r
  Allocate memory and clean it with zero.\r
\r
  @param[in] Size   Size of memory to allocate.\r
\r
  @return       Allocated address for output.\r
\r
**/\r
VOID *\r
AllocateZeroPages (\r
  IN UINTN  Size\r
  )\r
{\r
  VOID                  *Buffer;\r
\r
  Buffer = AllocatePages (EFI_SIZE_TO_PAGES (Size));\r
  if (Buffer != NULL) {\r
    ZeroMem (Buffer, Size);\r
  }\r
\r
  return Buffer;\r
}\r
/**\r
  Callback function executed when the EndOfDxe event group is signaled.\r
\r
  We delay allocating StartupVector and saving the MTRR settings until BDS signals EndOfDxe.\r
\r
  @param[in]  Event    Event whose notification function is being invoked.\r
  @param[out] Context  Pointer to the MTRR_SETTINGS buffer to fill in.\r
**/\r
VOID\r
EFIAPI\r
CpuS3DataOnEndOfDxe (\r
  IN  EFI_EVENT  Event,\r
  OUT VOID       *Context\r
  )\r
{\r
  EFI_STATUS         Status;\r
  ACPI_CPU_DATA_EX   *AcpiCpuDataEx;\r
\r
  AcpiCpuDataEx = (ACPI_CPU_DATA_EX *) Context;\r
  //\r
  // Allocate a 4KB reserved page below 1MB\r
  //\r
  AcpiCpuDataEx->AcpiCpuData.StartupVector = BASE_1MB - 1;\r
  Status = gBS->AllocatePages (\r
                  AllocateMaxAddress,\r
                  EfiReservedMemoryType,\r
                  1,\r
                  &AcpiCpuDataEx->AcpiCpuData.StartupVector\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  DEBUG ((EFI_D_VERBOSE, "%a\n", __FUNCTION__));\r
  MtrrGetAllMtrrs (&AcpiCpuDataEx->MtrrTable);\r
\r
  //\r
  // Close event, so it will not be invoked again.\r
  //\r
  gBS->CloseEvent (Event);\r
}\r
\r
/**\r
   The entry function of the CpuS3Data driver.\r
\r
   Allocate and initialize all fields of the ACPI_CPU_DATA structure except the\r
   MTRR settings.  Register an event notification on gEfiEndOfDxeEventGroupGuid\r
   to capture the ACPI_CPU_DATA MTRR settings.  The PcdCpuS3DataAddress is set\r
   to the address that ACPI_CPU_DATA is allocated at.\r
\r
   @param[in] ImageHandle  The firmware allocated handle for the EFI image.\r
   @param[in] SystemTable  A pointer to the EFI System Table.\r
\r
   @retval EFI_SUCCESS     The entry point is executed successfully.\r
   @retval EFI_UNSUPPORTED Do not support ACPI S3.\r
   @retval other           Some error occurs when executing this entry point.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
CpuS3DataInitialize (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS                 Status;\r
  ACPI_CPU_DATA_EX           *AcpiCpuDataEx;\r
  ACPI_CPU_DATA              *AcpiCpuData;\r
  EFI_MP_SERVICES_PROTOCOL   *MpServices;\r
  UINTN                      NumberOfCpus;\r
  UINTN                      NumberOfEnabledProcessors;\r
  VOID                       *Stack;\r
  UINTN                      TableSize;\r
  CPU_REGISTER_TABLE         *RegisterTable;\r
  UINTN                      Index;\r
  EFI_PROCESSOR_INFORMATION  ProcessorInfoBuffer;\r
  UINTN                      GdtSize;\r
  UINTN                      IdtSize;\r
  VOID                       *Gdt;\r
  VOID                       *Idt;\r
  EFI_EVENT                  Event;\r
  ACPI_CPU_DATA              *OldAcpiCpuData;\r
\r
  if (!PcdGetBool (PcdAcpiS3Enable)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
  //\r
  OldAcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);\r
\r
  AcpiCpuDataEx = AllocateZeroPages (sizeof (ACPI_CPU_DATA_EX));\r
  ASSERT (AcpiCpuDataEx != NULL);\r
  AcpiCpuData = &AcpiCpuDataEx->AcpiCpuData;\r
\r
  //\r
  // Get MP Services Protocol\r
  //\r
  Status = gBS->LocateProtocol (\r
                  &gEfiMpServiceProtocolGuid,\r
                  NULL,\r
                  (VOID **)&MpServices\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  //\r
  // Get the number of CPUs\r
  //\r
  Status = MpServices->GetNumberOfProcessors (\r
                         MpServices,\r
                         &NumberOfCpus,\r
                         &NumberOfEnabledProcessors\r
                         );\r
  ASSERT_EFI_ERROR (Status);\r
  AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;\r
\r
  //\r
  // Initialize ACPI_CPU_DATA fields\r
  //\r
  AcpiCpuData->StackSize                 = PcdGet32 (PcdCpuApStackSize);\r
  AcpiCpuData->ApMachineCheckHandlerBase = 0;\r
  AcpiCpuData->ApMachineCheckHandlerSize = 0;\r
  AcpiCpuData->GdtrProfile  = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->GdtrProfile;\r
  AcpiCpuData->IdtrProfile  = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->IdtrProfile;\r
  AcpiCpuData->MtrrTable    = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->MtrrTable;\r
\r
  //\r
  // Allocate stack space for all CPUs.\r
  // Use ACPI NVS memory type because this data will be directly used by APs\r
  // in S3 resume phase in long mode. Also during S3 resume, the stack buffer\r
  // will only be used as scratch space. i.e. we won't read anything from it\r
  // before we write to it, in PiSmmCpuDxeSmm.\r
  //\r
  Stack = AllocateAcpiNvsMemory (NumberOfCpus * AcpiCpuData->StackSize);\r
  ASSERT (Stack != NULL);\r
  AcpiCpuData->StackAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Stack;\r
\r
  //\r
  // Get the boot processor's GDT and IDT\r
  //\r
  AsmReadGdtr (&AcpiCpuDataEx->GdtrProfile);\r
  AsmReadIdtr (&AcpiCpuDataEx->IdtrProfile);\r
\r
  //\r
  // Allocate GDT and IDT and copy current GDT and IDT contents\r
  //\r
  GdtSize = AcpiCpuDataEx->GdtrProfile.Limit + 1;\r
  IdtSize = AcpiCpuDataEx->IdtrProfile.Limit + 1;\r
  Gdt = AllocateZeroPages (GdtSize + IdtSize);\r
  ASSERT (Gdt != NULL);\r
  Idt = (VOID *)((UINTN)Gdt + GdtSize);\r
  CopyMem (Gdt, (VOID *)AcpiCpuDataEx->GdtrProfile.Base, GdtSize);\r
  CopyMem (Idt, (VOID *)AcpiCpuDataEx->IdtrProfile.Base, IdtSize);\r
  AcpiCpuDataEx->GdtrProfile.Base = (UINTN)Gdt;\r
  AcpiCpuDataEx->IdtrProfile.Base = (UINTN)Idt;\r
\r
  if (OldAcpiCpuData != NULL) {\r
    AcpiCpuData->RegisterTable           = OldAcpiCpuData->RegisterTable;\r
    AcpiCpuData->PreSmmInitRegisterTable = OldAcpiCpuData->PreSmmInitRegisterTable;\r
    AcpiCpuData->ApLocation              = OldAcpiCpuData->ApLocation;\r
    CopyMem (&AcpiCpuData->CpuStatus, &OldAcpiCpuData->CpuStatus, sizeof (CPU_STATUS_INFORMATION));\r
  } else {\r
    //\r
    // Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs\r
    //\r
    TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);\r
    RegisterTable = (CPU_REGISTER_TABLE *)AllocateZeroPages (TableSize);\r
    ASSERT (RegisterTable != NULL);\r
\r
    for (Index = 0; Index < NumberOfCpus; Index++) {\r
      Status = MpServices->GetProcessorInfo (\r
                           MpServices,\r
                           Index,\r
                           &ProcessorInfoBuffer\r
                           );\r
      ASSERT_EFI_ERROR (Status);\r
\r
      RegisterTable[Index].InitialApicId      = (UINT32)ProcessorInfoBuffer.ProcessorId;\r
      RegisterTable[Index].TableLength        = 0;\r
      RegisterTable[Index].AllocatedSize      = 0;\r
      RegisterTable[Index].RegisterTableEntry = 0;\r
\r
      RegisterTable[NumberOfCpus + Index].InitialApicId      = (UINT32)ProcessorInfoBuffer.ProcessorId;\r
      RegisterTable[NumberOfCpus + Index].TableLength        = 0;\r
      RegisterTable[NumberOfCpus + Index].AllocatedSize      = 0;\r
      RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;\r
    }\r
    AcpiCpuData->RegisterTable           = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;\r
    AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);\r
  }\r
\r
  //\r
  // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
  //\r
  Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  //\r
  // Register EFI_END_OF_DXE_EVENT_GROUP_GUID event.\r
  // The notification function allocates StartupVector and saves MTRRs for ACPI_CPU_DATA\r
  //\r
  Status = gBS->CreateEventEx (\r
                  EVT_NOTIFY_SIGNAL,\r
                  TPL_CALLBACK,\r
                  CpuS3DataOnEndOfDxe,\r
                  AcpiCpuData,\r
                  &gEfiEndOfDxeEventGroupGuid,\r
                  &Event\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
	1	/** @file\r
	2	ACPI CPU Data initialization module\r
	3	\r
	4	This module initializes the ACPI_CPU_DATA structure and registers the address\r
	5	of this structure in the PcdCpuS3DataAddress PCD. This is a generic/simple\r
	6	version of this module. It does not provide a machine check handler or CPU\r
	7	register initialization tables for ACPI S3 resume. It also only supports the\r
	8	number of CPUs reported by the MP Services Protocol, so this module does not\r
	9	support hot plug CPUs. This module can be copied into a CPU specific package\r
	10	and customized if these additional features are required.\r
	11	\r
	12	Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>\r
	13	Copyright (c) 2015, Red Hat, Inc.\r
	14	\r
	15	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	16	\r
	17	**/\r
	18	\r
	19	#include <PiDxe.h>\r
	20	\r
	21	#include <AcpiCpuData.h>\r
	22	\r
	23	#include <Library/BaseLib.h>\r
	24	#include <Library/BaseMemoryLib.h>\r
	25	#include <Library/UefiBootServicesTableLib.h>\r
	26	#include <Library/DebugLib.h>\r
	27	#include <Library/MtrrLib.h>\r
	28	#include <Library/MemoryAllocationLib.h>\r
	29	\r
	30	#include <Protocol/MpService.h>\r
	31	#include <Guid/EventGroup.h>\r
	32	\r
	33	//\r
	34	// Data structure used to allocate ACPI_CPU_DATA and its supporting structures\r
	35	//\r
	36	typedef struct {\r
	37	ACPI_CPU_DATA AcpiCpuData;\r
	38	MTRR_SETTINGS MtrrTable;\r
	39	IA32_DESCRIPTOR GdtrProfile;\r
	40	IA32_DESCRIPTOR IdtrProfile;\r
	41	} ACPI_CPU_DATA_EX;\r
	42	\r
	43	/**\r
	44	Allocate EfiACPIMemoryNVS memory.\r
	45	\r
	46	@param[in] Size Size of memory to allocate.\r
	47	\r
	48	@return Allocated address for output.\r
	49	\r
	50	**/\r
	51	VOID *\r
	52	AllocateAcpiNvsMemory (\r
	53	IN UINTN Size\r
	54	)\r
	55	{\r
	56	EFI_PHYSICAL_ADDRESS Address;\r
	57	EFI_STATUS Status;\r
	58	VOID *Buffer;\r
	59	\r
	60	Status = gBS->AllocatePages (\r
	61	AllocateAnyPages,\r
	62	EfiACPIMemoryNVS,\r
	63	EFI_SIZE_TO_PAGES (Size),\r
	64	&Address\r
	65	);\r
	66	if (EFI_ERROR (Status)) {\r
	67	return NULL;\r
	68	}\r
	69	\r
	70	Buffer = (VOID *)(UINTN)Address;\r
	71	ZeroMem (Buffer, Size);\r
	72	\r
	73	return Buffer;\r
	74	}\r
	75	\r
	76	/**\r
	77	Allocate memory and clean it with zero.\r
	78	\r
	79	@param[in] Size Size of memory to allocate.\r
	80	\r
	81	@return Allocated address for output.\r
	82	\r
	83	**/\r
	84	VOID *\r
	85	AllocateZeroPages (\r
	86	IN UINTN Size\r
	87	)\r
	88	{\r
	89	VOID *Buffer;\r
	90	\r
	91	Buffer = AllocatePages (EFI_SIZE_TO_PAGES (Size));\r
	92	if (Buffer != NULL) {\r
	93	ZeroMem (Buffer, Size);\r
	94	}\r
	95	\r
	96	return Buffer;\r
	97	}\r
	98	/**\r
	99	Callback function executed when the EndOfDxe event group is signaled.\r
	100	\r
	101	We delay allocating StartupVector and saving the MTRR settings until BDS signals EndOfDxe.\r
	102	\r
	103	@param[in] Event Event whose notification function is being invoked.\r
	104	@param[out] Context Pointer to the MTRR_SETTINGS buffer to fill in.\r
	105	**/\r
	106	VOID\r
	107	EFIAPI\r
	108	CpuS3DataOnEndOfDxe (\r
	109	IN EFI_EVENT Event,\r
	110	OUT VOID *Context\r
	111	)\r
	112	{\r
	113	EFI_STATUS Status;\r
	114	ACPI_CPU_DATA_EX *AcpiCpuDataEx;\r
	115	\r
	116	AcpiCpuDataEx = (ACPI_CPU_DATA_EX *) Context;\r
	117	//\r
	118	// Allocate a 4KB reserved page below 1MB\r
	119	//\r
	120	AcpiCpuDataEx->AcpiCpuData.StartupVector = BASE_1MB - 1;\r
	121	Status = gBS->AllocatePages (\r
	122	AllocateMaxAddress,\r
	123	EfiReservedMemoryType,\r
	124	1,\r
	125	&AcpiCpuDataEx->AcpiCpuData.StartupVector\r
	126	);\r
	127	ASSERT_EFI_ERROR (Status);\r
	128	\r
	129	DEBUG ((EFI_D_VERBOSE, "%a\n", __FUNCTION__));\r
	130	MtrrGetAllMtrrs (&AcpiCpuDataEx->MtrrTable);\r
	131	\r
	132	//\r
	133	// Close event, so it will not be invoked again.\r
	134	//\r
	135	gBS->CloseEvent (Event);\r
	136	}\r
	137	\r
	138	/**\r
	139	The entry function of the CpuS3Data driver.\r
	140	\r
	141	Allocate and initialize all fields of the ACPI_CPU_DATA structure except the\r
	142	MTRR settings. Register an event notification on gEfiEndOfDxeEventGroupGuid\r
	143	to capture the ACPI_CPU_DATA MTRR settings. The PcdCpuS3DataAddress is set\r
	144	to the address that ACPI_CPU_DATA is allocated at.\r
	145	\r
	146	@param[in] ImageHandle The firmware allocated handle for the EFI image.\r
	147	@param[in] SystemTable A pointer to the EFI System Table.\r
	148	\r
	149	@retval EFI_SUCCESS The entry point is executed successfully.\r
	150	@retval EFI_UNSUPPORTED Do not support ACPI S3.\r
	151	@retval other Some error occurs when executing this entry point.\r
	152	\r
	153	**/\r
	154	EFI_STATUS\r
	155	EFIAPI\r
	156	CpuS3DataInitialize (\r
	157	IN EFI_HANDLE ImageHandle,\r
	158	IN EFI_SYSTEM_TABLE *SystemTable\r
	159	)\r
	160	{\r
	161	EFI_STATUS Status;\r
	162	ACPI_CPU_DATA_EX *AcpiCpuDataEx;\r
	163	ACPI_CPU_DATA *AcpiCpuData;\r
	164	EFI_MP_SERVICES_PROTOCOL *MpServices;\r
	165	UINTN NumberOfCpus;\r
	166	UINTN NumberOfEnabledProcessors;\r
	167	VOID *Stack;\r
	168	UINTN TableSize;\r
	169	CPU_REGISTER_TABLE *RegisterTable;\r
	170	UINTN Index;\r
	171	EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;\r
	172	UINTN GdtSize;\r
	173	UINTN IdtSize;\r
	174	VOID *Gdt;\r
	175	VOID *Idt;\r
	176	EFI_EVENT Event;\r
	177	ACPI_CPU_DATA *OldAcpiCpuData;\r
	178	\r
	179	if (!PcdGetBool (PcdAcpiS3Enable)) {\r
	180	return EFI_UNSUPPORTED;\r
	181	}\r
	182	\r
	183	//\r
	184	// Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
	185	//\r
	186	OldAcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);\r
	187	\r
	188	AcpiCpuDataEx = AllocateZeroPages (sizeof (ACPI_CPU_DATA_EX));\r
	189	ASSERT (AcpiCpuDataEx != NULL);\r
	190	AcpiCpuData = &AcpiCpuDataEx->AcpiCpuData;\r
	191	\r
	192	//\r
	193	// Get MP Services Protocol\r
	194	//\r
	195	Status = gBS->LocateProtocol (\r
	196	&gEfiMpServiceProtocolGuid,\r
	197	NULL,\r
	198	(VOID **)&MpServices\r
	199	);\r
	200	ASSERT_EFI_ERROR (Status);\r
	201	\r
	202	//\r
	203	// Get the number of CPUs\r
	204	//\r
	205	Status = MpServices->GetNumberOfProcessors (\r
	206	MpServices,\r
	207	&NumberOfCpus,\r
	208	&NumberOfEnabledProcessors\r
	209	);\r
	210	ASSERT_EFI_ERROR (Status);\r
	211	AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;\r
	212	\r
	213	//\r
	214	// Initialize ACPI_CPU_DATA fields\r
	215	//\r
	216	AcpiCpuData->StackSize = PcdGet32 (PcdCpuApStackSize);\r
	217	AcpiCpuData->ApMachineCheckHandlerBase = 0;\r
	218	AcpiCpuData->ApMachineCheckHandlerSize = 0;\r
	219	AcpiCpuData->GdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->GdtrProfile;\r
	220	AcpiCpuData->IdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->IdtrProfile;\r
	221	AcpiCpuData->MtrrTable = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->MtrrTable;\r
	222	\r
	223	//\r
	224	// Allocate stack space for all CPUs.\r
	225	// Use ACPI NVS memory type because this data will be directly used by APs\r
	226	// in S3 resume phase in long mode. Also during S3 resume, the stack buffer\r
	227	// will only be used as scratch space. i.e. we won't read anything from it\r
	228	// before we write to it, in PiSmmCpuDxeSmm.\r
	229	//\r
	230	Stack = AllocateAcpiNvsMemory (NumberOfCpus * AcpiCpuData->StackSize);\r
	231	ASSERT (Stack != NULL);\r
	232	AcpiCpuData->StackAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Stack;\r
	233	\r
	234	//\r
	235	// Get the boot processor's GDT and IDT\r
	236	//\r
	237	AsmReadGdtr (&AcpiCpuDataEx->GdtrProfile);\r
	238	AsmReadIdtr (&AcpiCpuDataEx->IdtrProfile);\r
	239	\r
	240	//\r
	241	// Allocate GDT and IDT and copy current GDT and IDT contents\r
	242	//\r
	243	GdtSize = AcpiCpuDataEx->GdtrProfile.Limit + 1;\r
	244	IdtSize = AcpiCpuDataEx->IdtrProfile.Limit + 1;\r
	245	Gdt = AllocateZeroPages (GdtSize + IdtSize);\r
	246	ASSERT (Gdt != NULL);\r
	247	Idt = (VOID *)((UINTN)Gdt + GdtSize);\r
	248	CopyMem (Gdt, (VOID *)AcpiCpuDataEx->GdtrProfile.Base, GdtSize);\r
	249	CopyMem (Idt, (VOID *)AcpiCpuDataEx->IdtrProfile.Base, IdtSize);\r
	250	AcpiCpuDataEx->GdtrProfile.Base = (UINTN)Gdt;\r
	251	AcpiCpuDataEx->IdtrProfile.Base = (UINTN)Idt;\r
	252	\r
	253	if (OldAcpiCpuData != NULL) {\r
	254	AcpiCpuData->RegisterTable = OldAcpiCpuData->RegisterTable;\r
	255	AcpiCpuData->PreSmmInitRegisterTable = OldAcpiCpuData->PreSmmInitRegisterTable;\r
	256	AcpiCpuData->ApLocation = OldAcpiCpuData->ApLocation;\r
	257	CopyMem (&AcpiCpuData->CpuStatus, &OldAcpiCpuData->CpuStatus, sizeof (CPU_STATUS_INFORMATION));\r
	258	} else {\r
	259	//\r
	260	// Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs\r
	261	//\r
	262	TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);\r
	263	RegisterTable = (CPU_REGISTER_TABLE *)AllocateZeroPages (TableSize);\r
	264	ASSERT (RegisterTable != NULL);\r
	265	\r
	266	for (Index = 0; Index < NumberOfCpus; Index++) {\r
	267	Status = MpServices->GetProcessorInfo (\r
	268	MpServices,\r
	269	Index,\r
	270	&ProcessorInfoBuffer\r
	271	);\r
	272	ASSERT_EFI_ERROR (Status);\r
	273	\r
	274	RegisterTable[Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;\r
	275	RegisterTable[Index].TableLength = 0;\r
	276	RegisterTable[Index].AllocatedSize = 0;\r
	277	RegisterTable[Index].RegisterTableEntry = 0;\r
	278	\r
	279	RegisterTable[NumberOfCpus + Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;\r
	280	RegisterTable[NumberOfCpus + Index].TableLength = 0;\r
	281	RegisterTable[NumberOfCpus + Index].AllocatedSize = 0;\r
	282	RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;\r
	283	}\r
	284	AcpiCpuData->RegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;\r
	285	AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);\r
	286	}\r
	287	\r
	288	//\r
	289	// Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
	290	//\r
	291	Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);\r
	292	ASSERT_EFI_ERROR (Status);\r
	293	\r
	294	//\r
	295	// Register EFI_END_OF_DXE_EVENT_GROUP_GUID event.\r
	296	// The notification function allocates StartupVector and saves MTRRs for ACPI_CPU_DATA\r
	297	//\r
	298	Status = gBS->CreateEventEx (\r
	299	EVT_NOTIFY_SIGNAL,\r
	300	TPL_CALLBACK,\r
	301	CpuS3DataOnEndOfDxe,\r
	302	AcpiCpuData,\r
	303	&gEfiEndOfDxeEventGroupGuid,\r
	304	&Event\r
	305	);\r
	306	ASSERT_EFI_ERROR (Status);\r
	307	\r
	308	return EFI_SUCCESS;\r
	309	}\r