This is an implementation of the ACPI S3 Save protocol. This is defined in\r
S3 boot path specification 0.9.\r
\r
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2016, 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
**/\r
\r
#include <PiDxe.h>\r
-#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/UefiRuntimeServicesTableLib.h>\r
-#include <Library/HobLib.h>\r
-#include <Library/LockBoxLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/DebugLib.h>\r
-#include <Guid/AcpiVariableCompatibility.h>\r
-#include <Guid/AcpiS3Context.h>\r
-#include <Guid/Acpi.h>\r
#include <Protocol/AcpiS3Save.h>\r
-#include <IndustryStandard/Acpi.h>\r
\r
#include "AcpiS3Save.h"\r
\r
-//\r
-// 8 extra pages for PF handler.\r
-//\r
-#define EXTRA_PAGE_TABLE_PAGES 8\r
-\r
/**\r
Hook point for AcpiVariableThunkPlatform for InstallAcpiS3Save.\r
**/\r
/**\r
Hook point for AcpiVariableThunkPlatform for S3Ready.\r
\r
- @param AcpiS3Context ACPI s3 context\r
**/\r
VOID\r
S3ReadyThunkPlatform (\r
- IN ACPI_S3_CONTEXT *AcpiS3Context\r
+ VOID\r
);\r
\r
UINTN mLegacyRegionSize;\r
S3Ready,\r
};\r
\r
-EFI_GUID mAcpiS3IdtrProfileGuid = {\r
- 0xdea652b0, 0xd587, 0x4c54, { 0xb5, 0xb4, 0xc6, 0x82, 0xe7, 0xa0, 0xaa, 0x3d }\r
-};\r
-\r
/**\r
Allocate memory below 4G memory address.\r
\r
return Buffer;\r
}\r
\r
-/**\r
-\r
- This function scan ACPI table in RSDT.\r
-\r
- @param Rsdt ACPI RSDT\r
- @param Signature ACPI table signature\r
-\r
- @return ACPI table\r
-\r
-**/\r
-VOID *\r
-ScanTableInRSDT (\r
- IN EFI_ACPI_DESCRIPTION_HEADER *Rsdt,\r
- IN UINT32 Signature\r
- )\r
-{\r
- UINTN Index;\r
- UINT32 EntryCount;\r
- UINT32 *EntryPtr;\r
- EFI_ACPI_DESCRIPTION_HEADER *Table;\r
-\r
- if (Rsdt == NULL) {\r
- return NULL;\r
- }\r
-\r
- EntryCount = (Rsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT32);\r
- \r
- EntryPtr = (UINT32 *)(Rsdt + 1);\r
- for (Index = 0; Index < EntryCount; Index ++, EntryPtr ++) {\r
- Table = (EFI_ACPI_DESCRIPTION_HEADER *)((UINTN)(*EntryPtr));\r
- if (Table->Signature == Signature) {\r
- return Table;\r
- }\r
- }\r
- \r
- return NULL;\r
-}\r
-\r
-/**\r
-\r
- This function scan ACPI table in XSDT.\r
-\r
- @param Xsdt ACPI XSDT\r
- @param Signature ACPI table signature\r
-\r
- @return ACPI table\r
-\r
-**/\r
-VOID *\r
-ScanTableInXSDT (\r
- IN EFI_ACPI_DESCRIPTION_HEADER *Xsdt,\r
- IN UINT32 Signature\r
- )\r
-{\r
- UINTN Index;\r
- UINT32 EntryCount;\r
- UINT64 EntryPtr;\r
- UINTN BasePtr;\r
- EFI_ACPI_DESCRIPTION_HEADER *Table;\r
-\r
- if (Xsdt == NULL) {\r
- return NULL;\r
- }\r
-\r
- EntryCount = (Xsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT64);\r
- \r
- BasePtr = (UINTN)(Xsdt + 1);\r
- for (Index = 0; Index < EntryCount; Index ++) {\r
- CopyMem (&EntryPtr, (VOID *)(BasePtr + Index * sizeof(UINT64)), sizeof(UINT64));\r
- Table = (EFI_ACPI_DESCRIPTION_HEADER *)((UINTN)(EntryPtr));\r
- if (Table->Signature == Signature) {\r
- return Table;\r
- }\r
- }\r
- \r
- return NULL;\r
-}\r
-\r
-/**\r
- To find Facs in FADT.\r
-\r
- @param Fadt FADT table pointer\r
- \r
- @return Facs table pointer.\r
-**/\r
-EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r
-FindAcpiFacsFromFadt (\r
- IN EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt\r
- )\r
-{\r
- EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
- UINT64 Data64;\r
-\r
- if (Fadt == NULL) {\r
- return NULL;\r
- }\r
-\r
- if (Fadt->Header.Revision < EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_REVISION) {\r
- Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Fadt->FirmwareCtrl;\r
- } else {\r
- if (Fadt->FirmwareCtrl != 0) {\r
- Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Fadt->FirmwareCtrl;\r
- } else {\r
- CopyMem (&Data64, &Fadt->XFirmwareCtrl, sizeof(UINT64));\r
- Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Data64;\r
- }\r
- }\r
- return Facs;\r
-}\r
-\r
-/**\r
- To find Facs in Acpi tables.\r
- \r
- To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored \r
- in the table.\r
-\r
- @param AcpiTableGuid The guid used to find ACPI table in UEFI ConfigurationTable.\r
- \r
- @return Facs table pointer.\r
-**/\r
-EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r
-FindAcpiFacsTableByAcpiGuid (\r
- IN EFI_GUID *AcpiTableGuid\r
- )\r
-{\r
- EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;\r
- EFI_ACPI_DESCRIPTION_HEADER *Rsdt;\r
- EFI_ACPI_DESCRIPTION_HEADER *Xsdt;\r
- EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt;\r
- EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
- UINTN Index;\r
-\r
- Rsdp = NULL;\r
- //\r
- // found ACPI table RSD_PTR from system table\r
- //\r
- for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {\r
- if (CompareGuid (&(gST->ConfigurationTable[Index].VendorGuid), AcpiTableGuid)) {\r
- //\r
- // A match was found.\r
- //\r
- Rsdp = gST->ConfigurationTable[Index].VendorTable;\r
- break;\r
- }\r
- }\r
-\r
- if (Rsdp == NULL) {\r
- return NULL;\r
- }\r
-\r
- //\r
- // Search XSDT\r
- //\r
- if (Rsdp->Revision >= EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION) {\r
- Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN) Rsdp->XsdtAddress;\r
- Fadt = ScanTableInXSDT (Xsdt, EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE);\r
- if (Fadt != NULL) {\r
- Facs = FindAcpiFacsFromFadt (Fadt);\r
- if (Facs != NULL) {\r
- return Facs;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // Search RSDT\r
- //\r
- Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN) Rsdp->RsdtAddress;\r
- Fadt = ScanTableInRSDT (Rsdt, EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE);\r
- if (Fadt != NULL) {\r
- Facs = FindAcpiFacsFromFadt (Fadt);\r
- if (Facs != NULL) {\r
- return Facs;\r
- }\r
- }\r
-\r
- return NULL;\r
-}\r
-\r
-/**\r
- To find Facs in Acpi tables.\r
- \r
- To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored \r
- in the table.\r
- \r
- @return Facs table pointer.\r
-**/\r
-EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r
-FindAcpiFacsTable (\r
- VOID\r
- )\r
-{\r
- EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
-\r
- Facs = FindAcpiFacsTableByAcpiGuid (&gEfiAcpi20TableGuid);\r
- if (Facs != NULL) {\r
- return Facs;\r
- }\r
-\r
- return FindAcpiFacsTableByAcpiGuid (&gEfiAcpi10TableGuid);\r
-}\r
-\r
-/**\r
- The function will check if long mode waking vector is supported.\r
-\r
- @param[in] Facs Pointer to FACS table.\r
-\r
- @retval TRUE Long mode waking vector is supported.\r
- @retval FALSE Long mode waking vector is not supported.\r
-\r
-**/\r
-BOOLEAN\r
-IsLongModeWakingVectorSupport (\r
- IN EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs\r
- )\r
-{\r
- if ((Facs == NULL) ||\r
- (Facs->Signature != EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) ) {\r
- //\r
- // Something wrong with FACS.\r
- //\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
- //\r
- // BIOS supports 64bit waking vector.\r
- //\r
- if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
- return TRUE;\r
- }\r
- }\r
- }\r
- return FALSE;\r
-}\r
-\r
-/**\r
- Allocates page table buffer.\r
-\r
- @param[in] LongModeWakingVectorSupport Support long mode waking vector or not.\r
-\r
- If BootScriptExector driver will run in 64-bit mode, this function will establish the 1:1 \r
- virtual to physical mapping page table when long mode waking vector is supported, otherwise\r
- create 4G page table when long mode waking vector is not supported and let PF handler to\r
- handle > 4G request.\r
- If BootScriptExector driver will not run in 64-bit mode, this function will do nothing. \r
- \r
- @return Page table base address. \r
-\r
-**/\r
-EFI_PHYSICAL_ADDRESS\r
-S3AllocatePageTablesBuffer (\r
- IN BOOLEAN LongModeWakingVectorSupport\r
- )\r
-{ \r
- if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r
- UINTN ExtraPageTablePages;\r
- UINT32 RegEax;\r
- UINT32 RegEdx;\r
- UINT8 PhysicalAddressBits;\r
- UINT32 NumberOfPml4EntriesNeeded;\r
- UINT32 NumberOfPdpEntriesNeeded;\r
- EFI_PHYSICAL_ADDRESS S3NvsPageTableAddress;\r
- UINTN TotalPageTableSize;\r
- VOID *Hob;\r
- BOOLEAN Page1GSupport;\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
- Hob = GetFirstHob (EFI_HOB_TYPE_CPU);\r
- if (Hob != NULL) {\r
- PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;\r
- } else {\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
- ExtraPageTablePages = 0;\r
- if (!LongModeWakingVectorSupport) {\r
- //\r
- // Create 4G page table when BIOS does not support long mode waking vector,\r
- // and let PF handler to handle > 4G request.\r
- //\r
- PhysicalAddressBits = 32;\r
- ExtraPageTablePages = EXTRA_PAGE_TABLE_PAGES;\r
- }\r
-\r
- //\r
- // Calculate the table entries needed.\r
- //\r
- if (PhysicalAddressBits <= 39 ) {\r
- NumberOfPml4EntriesNeeded = 1;\r
- NumberOfPdpEntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 30));\r
- } else {\r
- NumberOfPml4EntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 39));\r
- NumberOfPdpEntriesNeeded = 512;\r
- }\r
-\r
- //\r
- // We need calculate whole page size then allocate once, because S3 restore page table does not know each page in Nvs.\r
- //\r
- if (!Page1GSupport) {\r
- TotalPageTableSize = (UINTN)(1 + NumberOfPml4EntriesNeeded + NumberOfPml4EntriesNeeded * NumberOfPdpEntriesNeeded);\r
- } else {\r
- TotalPageTableSize = (UINTN)(1 + NumberOfPml4EntriesNeeded);\r
- }\r
-\r
- TotalPageTableSize += ExtraPageTablePages;\r
- DEBUG ((EFI_D_ERROR, "AcpiS3Save TotalPageTableSize - 0x%x pages\n", TotalPageTableSize));\r
-\r
- //\r
- // By architecture only one PageMapLevel4 exists - so lets allocate storage for it.\r
- //\r
- S3NvsPageTableAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, EFI_PAGES_TO_SIZE(TotalPageTableSize));\r
- ASSERT (S3NvsPageTableAddress != 0);\r
- return S3NvsPageTableAddress;\r
- } else {\r
- //\r
- // If DXE is running 32-bit mode, no need to establish page table.\r
- //\r
- return (EFI_PHYSICAL_ADDRESS) 0; \r
- }\r
-}\r
-\r
/**\r
Gets the buffer of legacy memory below 1 MB \r
This function is to get the buffer in legacy memory below 1MB that is required during S3 resume.\r
IN VOID *LegacyMemoryAddress\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS AcpiS3ContextBuffer;\r
- ACPI_S3_CONTEXT *AcpiS3Context;\r
- STATIC BOOLEAN AlreadyEntered;\r
- IA32_DESCRIPTOR *Idtr;\r
- IA32_IDT_GATE_DESCRIPTOR *IdtGate;\r
- EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
+ STATIC BOOLEAN AlreadyEntered;\r
\r
DEBUG ((EFI_D_INFO, "S3Ready!\n"));\r
\r
}\r
AlreadyEntered = TRUE;\r
\r
- AcpiS3Context = AllocateMemoryBelow4G (EfiReservedMemoryType, sizeof(*AcpiS3Context));\r
- ASSERT (AcpiS3Context != NULL);\r
- AcpiS3ContextBuffer = (EFI_PHYSICAL_ADDRESS)(UINTN)AcpiS3Context;\r
-\r
- //\r
- // Get ACPI Table because we will save its position to variable\r
- //\r
- Facs = (EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *) FindAcpiFacsTable ();\r
- AcpiS3Context->AcpiFacsTable = (EFI_PHYSICAL_ADDRESS) (UINTN) Facs;\r
- ASSERT (AcpiS3Context->AcpiFacsTable != 0);\r
-\r
- IdtGate = AllocateMemoryBelow4G (EfiReservedMemoryType, sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 + sizeof(IA32_DESCRIPTOR));\r
- Idtr = (IA32_DESCRIPTOR *)(IdtGate + 0x100);\r
- Idtr->Base = (UINTN)IdtGate;\r
- Idtr->Limit = (UINT16)(sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 - 1);\r
- AcpiS3Context->IdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)Idtr;\r
-\r
- Status = SaveLockBox (\r
- &mAcpiS3IdtrProfileGuid,\r
- (VOID *)(UINTN)Idtr,\r
- (UINTN)sizeof(IA32_DESCRIPTOR)\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = SetLockBoxAttributes (&mAcpiS3IdtrProfileGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Allocate page table\r
- //\r
- AcpiS3Context->S3NvsPageTableAddress = S3AllocatePageTablesBuffer (IsLongModeWakingVectorSupport (Facs));\r
-\r
- //\r
- // Allocate stack\r
- //\r
- AcpiS3Context->BootScriptStackSize = PcdGet32 (PcdS3BootScriptStackSize);\r
- AcpiS3Context->BootScriptStackBase = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, PcdGet32 (PcdS3BootScriptStackSize));\r
- ASSERT (AcpiS3Context->BootScriptStackBase != 0);\r
-\r
- //\r
- // Allocate a code buffer < 4G for S3 debug to load external code, set invalid code instructions in it.\r
- //\r
- AcpiS3Context->S3DebugBufferAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, EFI_PAGE_SIZE);\r
- SetMem ((VOID *)(UINTN)AcpiS3Context->S3DebugBufferAddress, EFI_PAGE_SIZE, 0xff);\r
-\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: AcpiFacsTable is 0x%8x\n", AcpiS3Context->AcpiFacsTable));\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: IdtrProfile is 0x%8x\n", AcpiS3Context->IdtrProfile));\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: S3NvsPageTableAddress is 0x%8x\n", AcpiS3Context->S3NvsPageTableAddress));\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: S3DebugBufferAddress is 0x%8x\n", AcpiS3Context->S3DebugBufferAddress));\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: BootScriptStackBase is 0x%8x\n", AcpiS3Context->BootScriptStackBase));\r
- DEBUG((EFI_D_INFO, "AcpiS3Context: BootScriptStackSize is 0x%8x\n", AcpiS3Context->BootScriptStackSize));\r
-\r
- Status = SaveLockBox (\r
- &gEfiAcpiVariableGuid,\r
- &AcpiS3ContextBuffer,\r
- sizeof(AcpiS3ContextBuffer)\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = SaveLockBox (\r
- &gEfiAcpiS3ContextGuid,\r
- (VOID *)(UINTN)AcpiS3Context,\r
- (UINTN)sizeof(*AcpiS3Context)\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = SetLockBoxAttributes (&gEfiAcpiS3ContextGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
if (FeaturePcdGet(PcdFrameworkCompatibilitySupport)) {\r
- S3ReadyThunkPlatform (AcpiS3Context);\r
+ S3ReadyThunkPlatform ();\r
}\r
\r
return EFI_SUCCESS;\r
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