This module will excute the boot script saved during last boot and after that,\r
control is passed to OS waking up handler.\r
\r
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions\r
#include <Library/LocalApicLib.h>\r
#include <Library/ReportStatusCodeLib.h>\r
#include <Library/PrintLib.h>\r
+#include <Library/HobLib.h>\r
#include <Library/LockBoxLib.h>\r
#include <IndustryStandard/Acpi.h>\r
\r
UINT64 Uint64;\r
} PAGE_TABLE_ENTRY;\r
\r
+//\r
+// Page Table Entry 1GB\r
+//\r
+typedef union {\r
+ struct {\r
+ UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r
+ UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r
+ UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r
+ UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r
+ UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r
+ UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r
+ UINT64 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r
+ UINT64 MustBe1:1; // Must be 1 \r
+ UINT64 Global:1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write\r
+ UINT64 Available:3; // Available for use by system software\r
+ UINT64 PAT:1; //\r
+ UINT64 MustBeZero:17; // Must be zero;\r
+ UINT64 PageTableBaseAddress:22; // Page Table Base Address\r
+ UINT64 AvabilableHigh:11; // Available for use by system software\r
+ UINT64 Nx:1; // 0 = Execute Code, 1 = No Code Execution\r
+ } Bits;\r
+ UINT64 Uint64;\r
+} PAGE_TABLE_1G_ENTRY;\r
+\r
#pragma pack()\r
\r
//\r
IN EFI_PEI_S3_RESUME2_PPI *This\r
);\r
\r
+/**\r
+ Set data segment selectors value including DS/ES/FS/GS/SS.\r
+\r
+ @param[in] SelectorValue Segment selector value to be set.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+AsmSetDataSelectors (\r
+ IN UINT16 SelectorValue\r
+ );\r
+\r
//\r
// Globals\r
//\r
/* 0x40 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},\r
};\r
\r
+#define DATA_SEGEMENT_SELECTOR 0x18\r
+\r
//\r
// IA32 Gdt register\r
//\r
NULL,\r
(VOID **) &VariableServices\r
);\r
- ASSERT_EFI_ERROR (Status);\r
+ if (EFI_ERROR (Status)) {\r
+ return;\r
+ }\r
\r
VarSize = sizeof (EFI_PHYSICAL_ADDRESS);\r
Status = VariableServices->GetVariable (\r
PerfHeader->S3EntryNum = (UINT32) Index;\r
}\r
\r
+/**\r
+ The function will check if current waking vector is long mode.\r
+\r
+ @param AcpiS3Context a pointer to a structure of ACPI_S3_CONTEXT\r
+\r
+ @retval TRUE Current context need long mode waking vector.\r
+ @retval FALSE Current context need not long mode waking vector.\r
+**/\r
+BOOLEAN\r
+IsLongModeWakingVector (\r
+ IN ACPI_S3_CONTEXT *AcpiS3Context\r
+ )\r
+{\r
+ EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
+\r
+ Facs = (EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *) ((UINTN) (AcpiS3Context->AcpiFacsTable));\r
+ if ((Facs == NULL) ||\r
+ (Facs->Signature != EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) ||\r
+ ((Facs->FirmwareWakingVector == 0) && (Facs->XFirmwareWakingVector == 0)) ) {\r
+ // Something wrong with FACS\r
+ return FALSE;\r
+ }\r
+ if (Facs->XFirmwareWakingVector != 0) {\r
+ if ((Facs->Version == EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION) &&\r
+ ((Facs->Flags & EFI_ACPI_4_0_64BIT_WAKE_SUPPORTED_F) != 0) &&\r
+ ((Facs->Flags & EFI_ACPI_4_0_OSPM_64BIT_WAKE__F) != 0)) {\r
+ // Both BIOS and OS wants 64bit vector\r
+ if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
+ return TRUE;\r
+ }\r
+ }\r
+ }\r
+ return FALSE;\r
+}\r
+\r
/**\r
Jump to OS waking vector.\r
The function will install boot script done PPI, report S3 resume status code, and then jump to OS waking vector.\r
//\r
AsmWriteIdtr (&PeiS3ResumeState->Idtr);\r
\r
+ PERF_END (NULL, "ScriptExec", NULL, 0);\r
+\r
//\r
// Install BootScriptDonePpi\r
//\r
return ;\r
}\r
\r
- //\r
- // report status code on S3 resume\r
- //\r
- REPORT_STATUS_CODE (EFI_PROGRESS_CODE, EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_PC_OS_WAKE);\r
-\r
//\r
// Install EndOfPeiPpi\r
//\r
Status = PeiServicesInstallPpi (&mPpiListEndOfPeiTable);\r
ASSERT_EFI_ERROR (Status);\r
\r
+ //\r
+ // report status code on S3 resume\r
+ //\r
+ REPORT_STATUS_CODE (EFI_PROGRESS_CODE, EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_PC_OS_WAKE);\r
+\r
PERF_CODE (\r
WriteToOsS3PerformanceData ();\r
);\r
If BootScriptExector driver will not run in 64-bit mode, this function will do nothing. \r
\r
@param S3NvsPageTableAddress PageTableAddress in ACPINvs\r
+ @param Build4GPageTableOnly If BIOS just build 4G page table only\r
**/\r
VOID\r
RestoreS3PageTables (\r
- IN UINTN S3NvsPageTableAddress\r
+ IN UINTN S3NvsPageTableAddress,\r
+ IN BOOLEAN Build4GPageTableOnly\r
)\r
{\r
if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
UINT32 RegEax;\r
+ UINT32 RegEdx;\r
UINT8 PhysicalAddressBits;\r
EFI_PHYSICAL_ADDRESS PageAddress;\r
UINTN IndexOfPml4Entries;\r
UINTN IndexOfPdpEntries;\r
UINTN IndexOfPageDirectoryEntries;\r
- UINT64 NumberOfPml4EntriesNeeded;\r
- UINT64 NumberOfPdpEntriesNeeded;\r
+ UINT32 NumberOfPml4EntriesNeeded;\r
+ UINT32 NumberOfPdpEntriesNeeded;\r
PAGE_MAP_AND_DIRECTORY_POINTER *PageMapLevel4Entry;\r
PAGE_MAP_AND_DIRECTORY_POINTER *PageMap;\r
PAGE_MAP_AND_DIRECTORY_POINTER *PageDirectoryPointerEntry;\r
PAGE_TABLE_ENTRY *PageDirectoryEntry;\r
+ VOID *Hob;\r
+ BOOLEAN Page1GSupport;\r
+ PAGE_TABLE_1G_ENTRY *PageDirectory1GEntry;\r
\r
//\r
// NOTE: We have to ASSUME the page table generation format, because we do not know whole page table information.\r
//\r
// The assumption is : whole page table is allocated in CONTINOUS memory and CR3 points to TOP page.\r
//\r
- DEBUG ((EFI_D_ERROR, "S3NvsPageTableAddress - %x\n", S3NvsPageTableAddress));\r
+ DEBUG ((EFI_D_ERROR, "S3NvsPageTableAddress - %x (%x)\n", (UINTN)S3NvsPageTableAddress, (UINTN)Build4GPageTableOnly));\r
\r
//\r
// By architecture only one PageMapLevel4 exists - so lets allocate storgage for it.\r
PageMap = (PAGE_MAP_AND_DIRECTORY_POINTER *)S3NvsPageTableAddress;\r
S3NvsPageTableAddress += SIZE_4KB;\r
\r
+ Page1GSupport = FALSE;\r
+ if (PcdGetBool(PcdUse1GPageTable)) {\r
+ AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r
+ if (RegEax >= 0x80000001) {\r
+ AsmCpuid (0x80000001, NULL, NULL, NULL, &RegEdx);\r
+ if ((RegEdx & BIT26) != 0) {\r
+ Page1GSupport = TRUE;\r
+ }\r
+ }\r
+ }\r
+ \r
//\r
// Get physical address bits supported.\r
//\r
- AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r
- if (RegEax >= 0x80000008) {\r
- AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r
- PhysicalAddressBits = (UINT8) RegEax;\r
+ Hob = GetFirstHob (EFI_HOB_TYPE_CPU);\r
+ if (Hob != NULL) {\r
+ PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;\r
} else {\r
- PhysicalAddressBits = 36;\r
+ AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r
+ if (RegEax >= 0x80000008) {\r
+ AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r
+ PhysicalAddressBits = (UINT8) RegEax;\r
+ } else {\r
+ PhysicalAddressBits = 36;\r
+ }\r
}\r
\r
+ //\r
+ // IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.\r
+ //\r
+ ASSERT (PhysicalAddressBits <= 52);\r
+ if (PhysicalAddressBits > 48) {\r
+ PhysicalAddressBits = 48;\r
+ }\r
+\r
+ //\r
+ // NOTE: In order to save time to create full page table, we just create 4G page table by default.\r
+ // And let PF handler in BootScript driver to create more on request.\r
+ //\r
+ if (Build4GPageTableOnly) {\r
+ PhysicalAddressBits = 32;\r
+ ZeroMem (PageMap, EFI_PAGES_TO_SIZE(2));\r
+ }\r
//\r
// Calculate the table entries needed.\r
//\r
if (PhysicalAddressBits <= 39) {\r
NumberOfPml4EntriesNeeded = 1;\r
- NumberOfPdpEntriesNeeded = LShiftU64 (1, (PhysicalAddressBits - 30));\r
+ NumberOfPdpEntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 30));\r
} else {\r
- NumberOfPml4EntriesNeeded = LShiftU64 (1, (PhysicalAddressBits - 39));\r
+ NumberOfPml4EntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 39));\r
NumberOfPdpEntriesNeeded = 512;\r
}\r
\r
PageMapLevel4Entry->Uint64 = (UINT64)(UINTN)PageDirectoryPointerEntry;\r
PageMapLevel4Entry->Bits.ReadWrite = 1;\r
PageMapLevel4Entry->Bits.Present = 1;\r
+\r
+ if (Page1GSupport) {\r
+ PageDirectory1GEntry = (VOID *) PageDirectoryPointerEntry;\r
\r
- for (IndexOfPdpEntries = 0; IndexOfPdpEntries < NumberOfPdpEntriesNeeded; IndexOfPdpEntries++, PageDirectoryPointerEntry++) {\r
- //\r
- // Each Directory Pointer entries points to a page of Page Directory entires.\r
- // So allocate space for them and fill them in in the IndexOfPageDirectoryEntries loop.\r
- // \r
- PageDirectoryEntry = (PAGE_TABLE_ENTRY *)S3NvsPageTableAddress;\r
- S3NvsPageTableAddress += SIZE_4KB;\r
- \r
- //\r
- // Fill in a Page Directory Pointer Entries\r
- //\r
- PageDirectoryPointerEntry->Uint64 = (UINT64)(UINTN)PageDirectoryEntry;\r
- PageDirectoryPointerEntry->Bits.ReadWrite = 1;\r
- PageDirectoryPointerEntry->Bits.Present = 1;\r
- \r
- for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectoryEntry++, PageAddress += SIZE_2MB) {\r
+ for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectory1GEntry++, PageAddress += SIZE_1GB) {\r
//\r
// Fill in the Page Directory entries\r
//\r
- PageDirectoryEntry->Uint64 = (UINT64)PageAddress;\r
- PageDirectoryEntry->Bits.ReadWrite = 1;\r
- PageDirectoryEntry->Bits.Present = 1;\r
- PageDirectoryEntry->Bits.MustBe1 = 1;\r
+ PageDirectory1GEntry->Uint64 = (UINT64)PageAddress;\r
+ PageDirectory1GEntry->Bits.ReadWrite = 1;\r
+ PageDirectory1GEntry->Bits.Present = 1;\r
+ PageDirectory1GEntry->Bits.MustBe1 = 1;\r
+ }\r
+ } else {\r
+ for (IndexOfPdpEntries = 0; IndexOfPdpEntries < NumberOfPdpEntriesNeeded; IndexOfPdpEntries++, PageDirectoryPointerEntry++) {\r
+ //\r
+ // Each Directory Pointer entries points to a page of Page Directory entires.\r
+ // So allocate space for them and fill them in in the IndexOfPageDirectoryEntries loop.\r
+ // \r
+ PageDirectoryEntry = (PAGE_TABLE_ENTRY *)S3NvsPageTableAddress;\r
+ S3NvsPageTableAddress += SIZE_4KB;\r
+ \r
+ //\r
+ // Fill in a Page Directory Pointer Entries\r
+ //\r
+ PageDirectoryPointerEntry->Uint64 = (UINT64)(UINTN)PageDirectoryEntry;\r
+ PageDirectoryPointerEntry->Bits.ReadWrite = 1;\r
+ PageDirectoryPointerEntry->Bits.Present = 1;\r
+ \r
+ for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectoryEntry++, PageAddress += SIZE_2MB) {\r
+ //\r
+ // Fill in the Page Directory entries\r
+ //\r
+ PageDirectoryEntry->Uint64 = (UINT64)PageAddress;\r
+ PageDirectoryEntry->Bits.ReadWrite = 1;\r
+ PageDirectoryEntry->Bits.Present = 1;\r
+ PageDirectoryEntry->Bits.MustBe1 = 1;\r
+ }\r
}\r
}\r
}\r
IA32_DESCRIPTOR *IdtDescriptor;\r
VOID *IdtBuffer;\r
PEI_S3_RESUME_STATE *PeiS3ResumeState;\r
+ BOOLEAN InterruptStatus;\r
\r
DEBUG ((EFI_D_ERROR, "S3ResumeExecuteBootScript()\n"));\r
\r
NULL,\r
(VOID **) &SmmAccess\r
);\r
+ if (!EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Close all SMRAM regions before executing boot script\n"));\r
+ \r
+ for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r
+ Status = SmmAccess->Close ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
+ }\r
\r
- DEBUG ((EFI_D_ERROR, "Close all SMRAM regions before executing boot script\n"));\r
-\r
- for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r
- Status = SmmAccess->Close ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
- }\r
-\r
- DEBUG ((EFI_D_ERROR, "Lock all SMRAM regions before executing boot script\n"));\r
-\r
- for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r
- Status = SmmAccess->Lock ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
+ DEBUG ((EFI_D_ERROR, "Lock all SMRAM regions before executing boot script\n"));\r
+ \r
+ for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r
+ Status = SmmAccess->Lock ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
+ }\r
}\r
}\r
\r
if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
- //\r
- // Need reconstruct page table here, since we do not trust ACPINvs.\r
- //\r
- RestoreS3PageTables ((UINTN)AcpiS3Context->S3NvsPageTableAddress);\r
AsmWriteCr3 ((UINTN)AcpiS3Context->S3NvsPageTableAddress);\r
}\r
\r
// \r
IdtBuffer = AllocatePages (EFI_SIZE_TO_PAGES((IdtDescriptor->Limit + 1) + 16));\r
ASSERT (IdtBuffer != NULL);\r
+ //\r
+ // Additional 16 bytes allocated to save IA32 IDT descriptor and Pei Service Table Pointer\r
+ // IA32 IDT descriptor will be used to setup IA32 IDT table for 32-bit Framework Boot Script code\r
+ // \r
+ ZeroMem (IdtBuffer, 16);\r
+ AsmReadIdtr ((IA32_DESCRIPTOR *)IdtBuffer);\r
CopyMem ((VOID*)((UINT8*)IdtBuffer + 16),(VOID*)(IdtDescriptor->Base), (IdtDescriptor->Limit + 1));\r
IdtDescriptor->Base = (UINTN)((UINT8*)IdtBuffer + 16);\r
*(UINTN*)(IdtDescriptor->Base - sizeof(UINTN)) = (UINTN)GetPeiServicesTablePointer ();\r
}\r
\r
+ InterruptStatus = SaveAndDisableInterrupts ();\r
//\r
// Need to make sure the GDT is loaded with values that support long mode and real mode.\r
//\r
AsmWriteGdtr (&mGdt);\r
+ //\r
+ // update segment selectors per the new GDT.\r
+ //\r
+ AsmSetDataSelectors (DATA_SEGEMENT_SELECTOR);\r
+ //\r
+ // Restore interrupt state.\r
+ //\r
+ SetInterruptState (InterruptStatus);\r
\r
//\r
// Prepare data for return back\r
//\r
AsmReadIdtr (&PeiS3ResumeState->Idtr);\r
\r
+ PERF_START (NULL, "ScriptExec", NULL, 0);\r
+\r
if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
//\r
// X64 S3 Resume\r
PEI_SMM_ACCESS_PPI *SmmAccess;\r
UINTN Index;\r
ACPI_S3_CONTEXT *AcpiS3Context;\r
- EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariableServices;\r
EFI_PHYSICAL_ADDRESS TempEfiBootScriptExecutorVariable;\r
EFI_PHYSICAL_ADDRESS TempAcpiS3Context;\r
BOOT_SCRIPT_EXECUTOR_VARIABLE *EfiBootScriptExecutorVariable;\r
EFI_SMRAM_DESCRIPTOR *SmramDescriptor;\r
SMM_S3_RESUME_STATE *SmmS3ResumeState;\r
VOID *GuidHob;\r
+ BOOLEAN Build4GPageTableOnly;\r
+ BOOLEAN InterruptStatus;\r
\r
- DEBUG ((EFI_D_ERROR, "Enter S3 PEIM\r\n"));\r
-\r
- Status = PeiServicesLocatePpi (\r
- &gPeiSmmAccessPpiGuid,\r
- 0,\r
- NULL,\r
- (VOID **) &SmmAccess\r
- );\r
- for (Index = 0; !EFI_ERROR (Status); Index++) {\r
- Status = SmmAccess->Open ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
- }\r
+ TempAcpiS3Context = 0;\r
+ TempEfiBootScriptExecutorVariable = 0;\r
\r
- Status = PeiServicesLocatePpi (\r
- &gEfiPeiReadOnlyVariable2PpiGuid,\r
- 0,\r
- NULL,\r
- (VOID **) &VariableServices\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
+ DEBUG ((EFI_D_ERROR, "Enter S3 PEIM\r\n"));\r
\r
VarSize = sizeof (EFI_PHYSICAL_ADDRESS);\r
Status = RestoreLockBox (\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
- AcpiS3Context = (ACPI_S3_CONTEXT *)(UINTN)TempAcpiS3Context;\r
- ASSERT (AcpiS3Context != NULL);\r
-\r
Status = RestoreLockBox (\r
&gEfiAcpiS3ContextGuid,\r
NULL,\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
- VarSize = sizeof (TempEfiBootScriptExecutorVariable);\r
+ AcpiS3Context = (ACPI_S3_CONTEXT *)(UINTN)TempAcpiS3Context;\r
+ ASSERT (AcpiS3Context != NULL);\r
+\r
+ VarSize = sizeof (EFI_PHYSICAL_ADDRESS);\r
Status = RestoreLockBox (\r
&gEfiBootScriptExecutorVariableGuid,\r
&TempEfiBootScriptExecutorVariable,\r
ASSERT_EFI_ERROR (Status);\r
\r
EfiBootScriptExecutorVariable = (BOOT_SCRIPT_EXECUTOR_VARIABLE *) (UINTN) TempEfiBootScriptExecutorVariable;\r
+ ASSERT (EfiBootScriptExecutorVariable != NULL);\r
\r
DEBUG (( EFI_D_ERROR, "AcpiS3Context = %x\n", AcpiS3Context));\r
DEBUG (( EFI_D_ERROR, "Waking Vector = %x\n", ((EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *) ((UINTN) (AcpiS3Context->AcpiFacsTable)))->FirmwareWakingVector));\r
CpuDeadLoop ();\r
}\r
\r
+ if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
+ //\r
+ // Need reconstruct page table here, since we do not trust ACPINvs.\r
+ //\r
+ if (IsLongModeWakingVector (AcpiS3Context)) {\r
+ Build4GPageTableOnly = FALSE;\r
+ } else {\r
+ Build4GPageTableOnly = TRUE;\r
+ }\r
+ RestoreS3PageTables ((UINTN)AcpiS3Context->S3NvsPageTableAddress, Build4GPageTableOnly);\r
+ }\r
+\r
//\r
// Attempt to use content from SMRAM first\r
//\r
GuidHob = GetFirstGuidHob (&gEfiAcpiVariableGuid);\r
if (GuidHob != NULL) {\r
+ Status = PeiServicesLocatePpi (\r
+ &gPeiSmmAccessPpiGuid,\r
+ 0,\r
+ NULL,\r
+ (VOID **) &SmmAccess\r
+ );\r
+ for (Index = 0; !EFI_ERROR (Status); Index++) {\r
+ Status = SmmAccess->Open ((EFI_PEI_SERVICES **)GetPeiServicesTablePointer (), SmmAccess, Index);\r
+ }\r
+\r
SmramDescriptor = (EFI_SMRAM_DESCRIPTOR *) GET_GUID_HOB_DATA (GuidHob);\r
SmmS3ResumeState = (SMM_S3_RESUME_STATE *)(UINTN)SmramDescriptor->CpuStart;\r
\r
// Switch to long mode to complete resume.\r
//\r
\r
+ InterruptStatus = SaveAndDisableInterrupts ();\r
//\r
// Need to make sure the GDT is loaded with values that support long mode and real mode.\r
//\r
AsmWriteGdtr (&mGdt);\r
+ //\r
+ // update segment selectors per the new GDT.\r
+ // \r
+ AsmSetDataSelectors (DATA_SEGEMENT_SELECTOR);\r
+ //\r
+ // Restore interrupt state.\r
+ //\r
+ SetInterruptState (InterruptStatus);\r
+\r
AsmWriteCr3 ((UINTN)SmmS3ResumeState->SmmS3Cr3);\r
AsmEnablePaging64 (\r
0x38,\r
projects / mirror_edk2.git / blobdiff