[mirror_edk2.git] / OvmfPkg / 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 - 2020, 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/DebugLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/MtrrLib.h>\r
#include <Library/UefiBootServicesTableLib.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 ((DEBUG_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
  VOID                       *Stack;\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
  if (PcdGetBool (PcdQ35SmramAtDefaultSmbase)) {\r
    NumberOfCpus = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r
  } else {\r
    UINTN NumberOfEnabledProcessors;\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
  }\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
  }\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
55942db1 LE	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 - 2020, 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
55942db1	25	#include <Library/DebugLib.h>\r
55942db1	26	#include <Library/MemoryAllocationLib.h>\r
8f3ed1bc LE	27	#include <Library/MtrrLib.h>\r
8f3ed1bc LE	28	#include <Library/UefiBootServicesTableLib.h>\r
55942db1 LE	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 ((DEBUG_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
55942db1	166	VOID *Stack;\r
55942db1 LE	167	UINTN GdtSize;\r
	168	UINTN IdtSize;\r
	169	VOID *Gdt;\r
	170	VOID *Idt;\r
	171	EFI_EVENT Event;\r
	172	ACPI_CPU_DATA *OldAcpiCpuData;\r
	173	\r
	174	if (!PcdGetBool (PcdAcpiS3Enable)) {\r
	175	return EFI_UNSUPPORTED;\r
	176	}\r
	177	\r
	178	//\r
	179	// Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
	180	//\r
	181	OldAcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);\r
	182	\r
	183	AcpiCpuDataEx = AllocateZeroPages (sizeof (ACPI_CPU_DATA_EX));\r
	184	ASSERT (AcpiCpuDataEx != NULL);\r
	185	AcpiCpuData = &AcpiCpuDataEx->AcpiCpuData;\r
	186	\r
339371ef	187	if (PcdGetBool (PcdQ35SmramAtDefaultSmbase)) {\r
1158fc8e LE	188	NumberOfCpus = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r
	189	} else {\r
	190	UINTN NumberOfEnabledProcessors;\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	}\r
55942db1 LE	212	AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;\r
	213	\r
	214	//\r
	215	// Initialize ACPI_CPU_DATA fields\r
	216	//\r
	217	AcpiCpuData->StackSize = PcdGet32 (PcdCpuApStackSize);\r
	218	AcpiCpuData->ApMachineCheckHandlerBase = 0;\r
	219	AcpiCpuData->ApMachineCheckHandlerSize = 0;\r
	220	AcpiCpuData->GdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->GdtrProfile;\r
	221	AcpiCpuData->IdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->IdtrProfile;\r
	222	AcpiCpuData->MtrrTable = (EFI_PHYSICAL_ADDRESS)(UINTN)&AcpiCpuDataEx->MtrrTable;\r
	223	\r
	224	//\r
	225	// Allocate stack space for all CPUs.\r
	226	// Use ACPI NVS memory type because this data will be directly used by APs\r
	227	// in S3 resume phase in long mode. Also during S3 resume, the stack buffer\r
	228	// will only be used as scratch space. i.e. we won't read anything from it\r
	229	// before we write to it, in PiSmmCpuDxeSmm.\r
	230	//\r
	231	Stack = AllocateAcpiNvsMemory (NumberOfCpus * AcpiCpuData->StackSize);\r
	232	ASSERT (Stack != NULL);\r
	233	AcpiCpuData->StackAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Stack;\r
	234	\r
	235	//\r
	236	// Get the boot processor's GDT and IDT\r
	237	//\r
	238	AsmReadGdtr (&AcpiCpuDataEx->GdtrProfile);\r
	239	AsmReadIdtr (&AcpiCpuDataEx->IdtrProfile);\r
	240	\r
	241	//\r
	242	// Allocate GDT and IDT and copy current GDT and IDT contents\r
	243	//\r
	244	GdtSize = AcpiCpuDataEx->GdtrProfile.Limit + 1;\r
	245	IdtSize = AcpiCpuDataEx->IdtrProfile.Limit + 1;\r
	246	Gdt = AllocateZeroPages (GdtSize + IdtSize);\r
	247	ASSERT (Gdt != NULL);\r
	248	Idt = (VOID *)((UINTN)Gdt + GdtSize);\r
	249	CopyMem (Gdt, (VOID *)AcpiCpuDataEx->GdtrProfile.Base, GdtSize);\r
	250	CopyMem (Idt, (VOID *)AcpiCpuDataEx->IdtrProfile.Base, IdtSize);\r
	251	AcpiCpuDataEx->GdtrProfile.Base = (UINTN)Gdt;\r
	252	AcpiCpuDataEx->IdtrProfile.Base = (UINTN)Idt;\r
	253	\r
	254	if (OldAcpiCpuData != NULL) {\r
	255	AcpiCpuData->RegisterTable = OldAcpiCpuData->RegisterTable;\r
	256	AcpiCpuData->PreSmmInitRegisterTable = OldAcpiCpuData->PreSmmInitRegisterTable;\r
	257	AcpiCpuData->ApLocation = OldAcpiCpuData->ApLocation;\r
	258	CopyMem (&AcpiCpuData->CpuStatus, &OldAcpiCpuData->CpuStatus, sizeof (CPU_STATUS_INFORMATION));\r
55942db1 LE	259	}\r
	260	\r
	261	//\r
	262	// Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure\r
	263	//\r
	264	Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);\r
	265	ASSERT_EFI_ERROR (Status);\r
	266	\r
	267	//\r
	268	// Register EFI_END_OF_DXE_EVENT_GROUP_GUID event.\r
	269	// The notification function allocates StartupVector and saves MTRRs for ACPI_CPU_DATA\r
	270	//\r
	271	Status = gBS->CreateEventEx (\r
	272	EVT_NOTIFY_SIGNAL,\r
	273	TPL_CALLBACK,\r
	274	CpuS3DataOnEndOfDxe,\r
	275	AcpiCpuData,\r
	276	&gEfiEndOfDxeEventGroupGuid,\r
	277	&Event\r
	278	);\r
	279	ASSERT_EFI_ERROR (Status);\r
	280	\r
	281	return EFI_SUCCESS;\r
	282	}\r