+++ /dev/null
-/** @file\r
- OVMF ACPI QEMU support\r
-\r
- Copyright (C) 2012-2021, Red Hat, Inc.\r
- Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>\r
-\r
- SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include <IndustryStandard/Acpi.h> // EFI_ACPI_1_0_IO_APIC_STRUCTURE\r
-#include <Library/BaseMemoryLib.h> // CopyMem()\r
-#include <Library/DebugLib.h> // DEBUG()\r
-#include <Library/DxeServicesTableLib.h> // gDS\r
-#include <Library/MemoryAllocationLib.h> // AllocatePool()\r
-#include <Library/PcdLib.h> // PcdGet16()\r
-#include <Library/QemuFwCfgLib.h> // QemuFwCfgIsAvailable()\r
-\r
-#include "AcpiPlatform.h"\r
-\r
-BOOLEAN\r
-QemuDetected (\r
- VOID\r
- )\r
-{\r
- if (!QemuFwCfgIsAvailable ()) {\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-\r
-STATIC\r
-UINTN\r
-CountBits16 (\r
- UINT16 Mask\r
- )\r
-{\r
- //\r
- // For all N >= 1, N bits are enough to represent the number of bits set\r
- // among N bits. It's true for N == 1. When adding a new bit (N := N+1),\r
- // the maximum number of possibly set bits increases by one, while the\r
- // representable maximum doubles.\r
- //\r
- Mask = ((Mask & 0xAAAA) >> 1) + (Mask & 0x5555);\r
- Mask = ((Mask & 0xCCCC) >> 2) + (Mask & 0x3333);\r
- Mask = ((Mask & 0xF0F0) >> 4) + (Mask & 0x0F0F);\r
- Mask = ((Mask & 0xFF00) >> 8) + (Mask & 0x00FF);\r
-\r
- return Mask;\r
-}\r
-\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-QemuInstallAcpiMadtTable (\r
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,\r
- IN VOID *AcpiTableBuffer,\r
- IN UINTN AcpiTableBufferSize,\r
- OUT UINTN *TableKey\r
- )\r
-{\r
- UINTN CpuCount;\r
- UINTN PciLinkIsoCount;\r
- UINTN NewBufferSize;\r
- EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER *Madt;\r
- EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE *LocalApic;\r
- EFI_ACPI_1_0_IO_APIC_STRUCTURE *IoApic;\r
- EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE *Iso;\r
- EFI_ACPI_1_0_LOCAL_APIC_NMI_STRUCTURE *LocalApicNmi;\r
- VOID *Ptr;\r
- UINTN Loop;\r
- EFI_STATUS Status;\r
-\r
- ASSERT (AcpiTableBufferSize >= sizeof (EFI_ACPI_DESCRIPTION_HEADER));\r
-\r
- QemuFwCfgSelectItem (QemuFwCfgItemSmpCpuCount);\r
- CpuCount = QemuFwCfgRead16 ();\r
- ASSERT (CpuCount >= 1);\r
-\r
- //\r
- // Set Level-tiggered, Active High for these identity mapped IRQs. The bitset\r
- // corresponds to the union of all possible interrupt assignments for the LNKA,\r
- // LNKB, LNKC, LNKD PCI interrupt lines. See the DSDT.\r
- //\r
- PciLinkIsoCount = CountBits16 (PcdGet16 (Pcd8259LegacyModeEdgeLevel));\r
-\r
- NewBufferSize = 1 * sizeof (*Madt) +\r
- CpuCount * sizeof (*LocalApic) +\r
- 1 * sizeof (*IoApic) +\r
- (1 + PciLinkIsoCount) * sizeof (*Iso) +\r
- 1 * sizeof (*LocalApicNmi);\r
-\r
- Madt = AllocatePool (NewBufferSize);\r
- if (Madt == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- CopyMem (&(Madt->Header), AcpiTableBuffer, sizeof (EFI_ACPI_DESCRIPTION_HEADER));\r
- Madt->Header.Length = (UINT32) NewBufferSize;\r
- Madt->LocalApicAddress = PcdGet32 (PcdCpuLocalApicBaseAddress);\r
- Madt->Flags = EFI_ACPI_1_0_PCAT_COMPAT;\r
- Ptr = Madt + 1;\r
-\r
- LocalApic = Ptr;\r
- for (Loop = 0; Loop < CpuCount; ++Loop) {\r
- LocalApic->Type = EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC;\r
- LocalApic->Length = sizeof (*LocalApic);\r
- LocalApic->AcpiProcessorId = (UINT8) Loop;\r
- LocalApic->ApicId = (UINT8) Loop;\r
- LocalApic->Flags = 1; // enabled\r
- ++LocalApic;\r
- }\r
- Ptr = LocalApic;\r
-\r
- IoApic = Ptr;\r
- IoApic->Type = EFI_ACPI_1_0_IO_APIC;\r
- IoApic->Length = sizeof (*IoApic);\r
- IoApic->IoApicId = (UINT8) CpuCount;\r
- IoApic->Reserved = EFI_ACPI_RESERVED_BYTE;\r
- IoApic->IoApicAddress = 0xFEC00000;\r
- IoApic->SystemVectorBase = 0x00000000;\r
- Ptr = IoApic + 1;\r
-\r
- //\r
- // IRQ0 (8254 Timer) => IRQ2 (PIC) Interrupt Source Override Structure\r
- //\r
- Iso = Ptr;\r
- Iso->Type = EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE;\r
- Iso->Length = sizeof (*Iso);\r
- Iso->Bus = 0x00; // ISA\r
- Iso->Source = 0x00; // IRQ0\r
- Iso->GlobalSystemInterruptVector = 0x00000002;\r
- Iso->Flags = 0x0000; // Conforms to specs of the bus\r
- ++Iso;\r
-\r
- //\r
- // Set Level-triggered, Active High for all possible PCI link targets.\r
- //\r
- for (Loop = 0; Loop < 16; ++Loop) {\r
- if ((PcdGet16 (Pcd8259LegacyModeEdgeLevel) & (1 << Loop)) == 0) {\r
- continue;\r
- }\r
- Iso->Type = EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE;\r
- Iso->Length = sizeof (*Iso);\r
- Iso->Bus = 0x00; // ISA\r
- Iso->Source = (UINT8) Loop;\r
- Iso->GlobalSystemInterruptVector = (UINT32) Loop;\r
- Iso->Flags = 0x000D; // Level-triggered, Active High\r
- ++Iso;\r
- }\r
- ASSERT (\r
- (UINTN) (Iso - (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE *)Ptr) ==\r
- 1 + PciLinkIsoCount\r
- );\r
- Ptr = Iso;\r
-\r
- LocalApicNmi = Ptr;\r
- LocalApicNmi->Type = EFI_ACPI_1_0_LOCAL_APIC_NMI;\r
- LocalApicNmi->Length = sizeof (*LocalApicNmi);\r
- LocalApicNmi->AcpiProcessorId = 0xFF; // applies to all processors\r
- //\r
- // polarity and trigger mode of the APIC I/O input signals conform to the\r
- // specifications of the bus\r
- //\r
- LocalApicNmi->Flags = 0x0000;\r
- //\r
- // Local APIC interrupt input LINTn to which NMI is connected.\r
- //\r
- LocalApicNmi->LocalApicInti = 0x01;\r
- Ptr = LocalApicNmi + 1;\r
-\r
- ASSERT ((UINTN) ((UINT8 *)Ptr - (UINT8 *)Madt) == NewBufferSize);\r
- Status = InstallAcpiTable (AcpiProtocol, Madt, NewBufferSize, TableKey);\r
-\r
- FreePool (Madt);\r
-\r
- return Status;\r
-}\r
-\r
-\r
-#pragma pack(1)\r
-\r
-typedef struct {\r
- UINT64 Base;\r
- UINT64 End;\r
- UINT64 Length;\r
-} PCI_WINDOW;\r
-\r
-typedef struct {\r
- PCI_WINDOW PciWindow32;\r
- PCI_WINDOW PciWindow64;\r
-} FIRMWARE_DATA;\r
-\r
-typedef struct {\r
- UINT8 BytePrefix;\r
- UINT8 ByteValue;\r
-} AML_BYTE;\r
-\r
-typedef struct {\r
- UINT8 NameOp;\r
- UINT8 RootChar;\r
- UINT8 NameChar[4];\r
- UINT8 PackageOp;\r
- UINT8 PkgLength;\r
- UINT8 NumElements;\r
- AML_BYTE Pm1aCntSlpTyp;\r
- AML_BYTE Pm1bCntSlpTyp;\r
- AML_BYTE Reserved[2];\r
-} SYSTEM_STATE_PACKAGE;\r
-\r
-#pragma pack()\r
-\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-PopulateFwData(\r
- OUT FIRMWARE_DATA *FwData\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN NumDesc;\r
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR *AllDesc;\r
-\r
- Status = gDS->GetMemorySpaceMap (&NumDesc, &AllDesc);\r
- if (Status == EFI_SUCCESS) {\r
- UINT64 NonMmio32MaxExclTop;\r
- UINT64 Mmio32MinBase;\r
- UINT64 Mmio32MaxExclTop;\r
- UINTN CurDesc;\r
-\r
- Status = EFI_UNSUPPORTED;\r
-\r
- NonMmio32MaxExclTop = 0;\r
- Mmio32MinBase = BASE_4GB;\r
- Mmio32MaxExclTop = 0;\r
-\r
- for (CurDesc = 0; CurDesc < NumDesc; ++CurDesc) {\r
- CONST EFI_GCD_MEMORY_SPACE_DESCRIPTOR *Desc;\r
- UINT64 ExclTop;\r
-\r
- Desc = &AllDesc[CurDesc];\r
- ExclTop = Desc->BaseAddress + Desc->Length;\r
-\r
- if (ExclTop <= (UINT64) PcdGet32 (PcdOvmfFdBaseAddress)) {\r
- switch (Desc->GcdMemoryType) {\r
- case EfiGcdMemoryTypeNonExistent:\r
- break;\r
-\r
- case EfiGcdMemoryTypeReserved:\r
- case EfiGcdMemoryTypeSystemMemory:\r
- if (NonMmio32MaxExclTop < ExclTop) {\r
- NonMmio32MaxExclTop = ExclTop;\r
- }\r
- break;\r
-\r
- case EfiGcdMemoryTypeMemoryMappedIo:\r
- if (Mmio32MinBase > Desc->BaseAddress) {\r
- Mmio32MinBase = Desc->BaseAddress;\r
- }\r
- if (Mmio32MaxExclTop < ExclTop) {\r
- Mmio32MaxExclTop = ExclTop;\r
- }\r
- break;\r
-\r
- default:\r
- ASSERT(0);\r
- }\r
- }\r
- }\r
-\r
- if (Mmio32MinBase < NonMmio32MaxExclTop) {\r
- Mmio32MinBase = NonMmio32MaxExclTop;\r
- }\r
-\r
- if (Mmio32MinBase < Mmio32MaxExclTop) {\r
- FwData->PciWindow32.Base = Mmio32MinBase;\r
- FwData->PciWindow32.End = Mmio32MaxExclTop - 1;\r
- FwData->PciWindow32.Length = Mmio32MaxExclTop - Mmio32MinBase;\r
-\r
- FwData->PciWindow64.Base = 0;\r
- FwData->PciWindow64.End = 0;\r
- FwData->PciWindow64.Length = 0;\r
-\r
- Status = EFI_SUCCESS;\r
- }\r
-\r
- FreePool (AllDesc);\r
- }\r
-\r
- DEBUG ((\r
- DEBUG_INFO,\r
- "ACPI PciWindow32: Base=0x%08lx End=0x%08lx Length=0x%08lx\n",\r
- FwData->PciWindow32.Base,\r
- FwData->PciWindow32.End,\r
- FwData->PciWindow32.Length\r
- ));\r
- DEBUG ((\r
- DEBUG_INFO,\r
- "ACPI PciWindow64: Base=0x%08lx End=0x%08lx Length=0x%08lx\n",\r
- FwData->PciWindow64.Base,\r
- FwData->PciWindow64.End,\r
- FwData->PciWindow64.Length\r
- ));\r
-\r
- return Status;\r
-}\r
-\r
-\r
-STATIC\r
-VOID\r
-EFIAPI\r
-GetSuspendStates (\r
- UINTN *SuspendToRamSize,\r
- SYSTEM_STATE_PACKAGE *SuspendToRam,\r
- UINTN *SuspendToDiskSize,\r
- SYSTEM_STATE_PACKAGE *SuspendToDisk\r
- )\r
-{\r
- STATIC CONST SYSTEM_STATE_PACKAGE Template = {\r
- 0x08, // NameOp\r
- '\\', // RootChar\r
- { '_', 'S', 'x', '_' }, // NameChar[4]\r
- 0x12, // PackageOp\r
- 0x0A, // PkgLength\r
- 0x04, // NumElements\r
- { 0x0A, 0x00 }, // Pm1aCntSlpTyp\r
- { 0x0A, 0x00 }, // Pm1bCntSlpTyp -- we don't support it\r
- { // Reserved[2]\r
- { 0x0A, 0x00 },\r
- { 0x0A, 0x00 }\r
- }\r
- };\r
- RETURN_STATUS Status;\r
- FIRMWARE_CONFIG_ITEM FwCfgItem;\r
- UINTN FwCfgSize;\r
- UINT8 SystemStates[6];\r
-\r
- //\r
- // configure defaults\r
- //\r
- *SuspendToRamSize = sizeof Template;\r
- CopyMem (SuspendToRam, &Template, sizeof Template);\r
- SuspendToRam->NameChar[2] = '3'; // S3\r
- SuspendToRam->Pm1aCntSlpTyp.ByteValue = 1; // PIIX4: STR\r
-\r
- *SuspendToDiskSize = sizeof Template;\r
- CopyMem (SuspendToDisk, &Template, sizeof Template);\r
- SuspendToDisk->NameChar[2] = '4'; // S4\r
- SuspendToDisk->Pm1aCntSlpTyp.ByteValue = 2; // PIIX4: POSCL\r
-\r
- //\r
- // check for overrides\r
- //\r
- Status = QemuFwCfgFindFile ("etc/system-states", &FwCfgItem, &FwCfgSize);\r
- if (Status != RETURN_SUCCESS || FwCfgSize != sizeof SystemStates) {\r
- DEBUG ((DEBUG_INFO, "ACPI using S3/S4 defaults\n"));\r
- return;\r
- }\r
- QemuFwCfgSelectItem (FwCfgItem);\r
- QemuFwCfgReadBytes (sizeof SystemStates, SystemStates);\r
-\r
- //\r
- // Each byte corresponds to a system state. In each byte, the MSB tells us\r
- // whether the given state is enabled. If so, the three LSBs specify the\r
- // value to be written to the PM control register's SUS_TYP bits.\r
- //\r
- if (SystemStates[3] & BIT7) {\r
- SuspendToRam->Pm1aCntSlpTyp.ByteValue =\r
- SystemStates[3] & (BIT2 | BIT1 | BIT0);\r
- DEBUG ((DEBUG_INFO, "ACPI S3 value: %d\n",\r
- SuspendToRam->Pm1aCntSlpTyp.ByteValue));\r
- } else {\r
- *SuspendToRamSize = 0;\r
- DEBUG ((DEBUG_INFO, "ACPI S3 disabled\n"));\r
- }\r
-\r
- if (SystemStates[4] & BIT7) {\r
- SuspendToDisk->Pm1aCntSlpTyp.ByteValue =\r
- SystemStates[4] & (BIT2 | BIT1 | BIT0);\r
- DEBUG ((DEBUG_INFO, "ACPI S4 value: %d\n",\r
- SuspendToDisk->Pm1aCntSlpTyp.ByteValue));\r
- } else {\r
- *SuspendToDiskSize = 0;\r
- DEBUG ((DEBUG_INFO, "ACPI S4 disabled\n"));\r
- }\r
-}\r
-\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-QemuInstallAcpiSsdtTable (\r
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,\r
- IN VOID *AcpiTableBuffer,\r
- IN UINTN AcpiTableBufferSize,\r
- OUT UINTN *TableKey\r
- )\r
-{\r
- EFI_STATUS Status;\r
- FIRMWARE_DATA *FwData;\r
-\r
- Status = EFI_OUT_OF_RESOURCES;\r
-\r
- FwData = AllocateReservedPool (sizeof (*FwData));\r
- if (FwData != NULL) {\r
- UINTN SuspendToRamSize;\r
- SYSTEM_STATE_PACKAGE SuspendToRam;\r
- UINTN SuspendToDiskSize;\r
- SYSTEM_STATE_PACKAGE SuspendToDisk;\r
- UINTN SsdtSize;\r
- UINT8 *Ssdt;\r
-\r
- GetSuspendStates (&SuspendToRamSize, &SuspendToRam,\r
- &SuspendToDiskSize, &SuspendToDisk);\r
- SsdtSize = AcpiTableBufferSize + 17 + SuspendToRamSize + SuspendToDiskSize;\r
- Ssdt = AllocatePool (SsdtSize);\r
-\r
- if (Ssdt != NULL) {\r
- Status = PopulateFwData (FwData);\r
-\r
- if (Status == EFI_SUCCESS) {\r
- UINT8 *SsdtPtr;\r
-\r
- SsdtPtr = Ssdt;\r
-\r
- CopyMem (SsdtPtr, AcpiTableBuffer, AcpiTableBufferSize);\r
- SsdtPtr += AcpiTableBufferSize;\r
-\r
- //\r
- // build "OperationRegion(FWDT, SystemMemory, 0x12345678, 0x87654321)"\r
- //\r
- *(SsdtPtr++) = 0x5B; // ExtOpPrefix\r
- *(SsdtPtr++) = 0x80; // OpRegionOp\r
- *(SsdtPtr++) = 'F';\r
- *(SsdtPtr++) = 'W';\r
- *(SsdtPtr++) = 'D';\r
- *(SsdtPtr++) = 'T';\r
- *(SsdtPtr++) = 0x00; // SystemMemory\r
- *(SsdtPtr++) = 0x0C; // DWordPrefix\r
-\r
- //\r
- // no virtual addressing yet, take the four least significant bytes\r
- //\r
- CopyMem(SsdtPtr, &FwData, 4);\r
- SsdtPtr += 4;\r
-\r
- *(SsdtPtr++) = 0x0C; // DWordPrefix\r
-\r
- *(UINT32*) SsdtPtr = sizeof (*FwData);\r
- SsdtPtr += 4;\r
-\r
- //\r
- // add suspend system states\r
- //\r
- CopyMem (SsdtPtr, &SuspendToRam, SuspendToRamSize);\r
- SsdtPtr += SuspendToRamSize;\r
- CopyMem (SsdtPtr, &SuspendToDisk, SuspendToDiskSize);\r
- SsdtPtr += SuspendToDiskSize;\r
-\r
- ASSERT((UINTN) (SsdtPtr - Ssdt) == SsdtSize);\r
- ((EFI_ACPI_DESCRIPTION_HEADER *) Ssdt)->Length = (UINT32) SsdtSize;\r
- Status = InstallAcpiTable (AcpiProtocol, Ssdt, SsdtSize, TableKey);\r
- }\r
-\r
- FreePool(Ssdt);\r
- }\r
-\r
- if (Status != EFI_SUCCESS) {\r
- FreePool(FwData);\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-QemuInstallAcpiTable (\r
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,\r
- IN VOID *AcpiTableBuffer,\r
- IN UINTN AcpiTableBufferSize,\r
- OUT UINTN *TableKey\r
- )\r
-{\r
- EFI_ACPI_DESCRIPTION_HEADER *Hdr;\r
- EFI_ACPI_TABLE_INSTALL_ACPI_TABLE TableInstallFunction;\r
-\r
- Hdr = (EFI_ACPI_DESCRIPTION_HEADER*) AcpiTableBuffer;\r
- switch (Hdr->Signature) {\r
- case EFI_ACPI_1_0_APIC_SIGNATURE:\r
- TableInstallFunction = QemuInstallAcpiMadtTable;\r
- break;\r
- case EFI_ACPI_1_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE:\r
- TableInstallFunction = QemuInstallAcpiSsdtTable;\r
- break;\r
- default:\r
- TableInstallFunction = InstallAcpiTable;\r
- }\r
-\r
- return TableInstallFunction (\r
- AcpiProtocol,\r
- AcpiTableBuffer,\r
- AcpiTableBufferSize,\r
- TableKey\r
- );\r
-}\r
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