diff options
Diffstat (limited to 'OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c')
| -rw-r--r-- | OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c | 1086 |
1 files changed, 0 insertions, 1086 deletions
diff --git a/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c b/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c deleted file mode 100644 index 491897adbd..0000000000 --- a/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c +++ /dev/null @@ -1,1086 +0,0 @@ -/** @file
- Legacy BIOS Platform support
-
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyPlatform.h"
-
-EFI_SETUP_BBS_MAP mSetupBbsMap[] = {
- { 1, 2, 1, 1 }, // ATA HardDrive
- { 2, 3, 1, 1 }, // ATAPI CDROM
- { 3, 0x80, 2, 0 }, // PXE
- { 4, 1, 0, 6 }, // USB Floppy
- { 4, 2, 0, 6 }, // USB HDD
- { 4, 3, 0, 6 }, // USB CD
- { 4, 1, 0, 0 }, // USB ZIP Bugbug since Class/SubClass code is uninitialized
- { 4, 2, 0, 0 } // USB ZIP Bugbug since Class/SubClass code is uninitialized
-};
-
-//
-// Global variables for System ROMs
-//
-#define SYSTEM_ROM_FILE_GUID \
-{ 0x1547B4F3, 0x3E8A, 0x4FEF, { 0x81, 0xC8, 0x32, 0x8E, 0xD6, 0x47, 0xAB, 0x1A } }
-
-#define NULL_ROM_FILE_GUID \
-{ 0x00000000, 0x0000, 0x0000, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
-
-SYSTEM_ROM_TABLE mSystemRomTable[] = {
- { SYSTEM_ROM_FILE_GUID, 1 },
- { NULL_ROM_FILE_GUID, 0 }
-};
-
-EFI_HANDLE mVgaHandles[0x20];
-EFI_HANDLE mDiskHandles[0x20];
-EFI_HANDLE mIsaHandles[0x20];
-
-EFI_LEGACY_IRQ_PRIORITY_TABLE_ENTRY IrqPriorityTable[MAX_IRQ_PRIORITY_ENTRIES] = {
- { 0x0B, 0 },
- { 0x09, 0 },
- { 0x0A, 0 },
- { 0x05, 0 },
- { 0x07, 0 },
- { 0x00, 0 },
- { 0x00, 0 }
-};
-
-//
-// PIRQ Table
-// - Slot numbering will be used to update the bus number and determine bridge
-// to check to get bus number. The Slot number - 1 is an index into a decode
-// table to get the bridge information.
-//
-EFI_LEGACY_PIRQ_TABLE PirqTableHead = {
- {
- EFI_LEGACY_PIRQ_TABLE_SIGNATURE, // UINT32 Signature
- 0x00, // UINT8 MinorVersion
- 0x01, // UINT8 MajorVersion
- 0x0000, // UINT16 TableSize
- 0x00, // UINT8 Bus
- 0x08, // UINT8 DevFun
- 0x0000, // UINT16 PciOnlyIrq
- 0x8086, // UINT16 CompatibleVid
- 0x122e, // UINT16 CompatibleDid
- 0x00000000, // UINT32 Miniport
- { // UINT8 Reserved[11]
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00
- },
- 0x00, // UINT8 Checksum
- },
- {
- // -- Pin 1 -- -- Pin 2 -- -- Pin 3 -- -- Pin 4 --
- // Bus Dev Reg Map Reg Map Reg Map Reg Map
- //
- { 0x00, 0x08, {
- { 0x60, 0xDEB8 }, { 0x61, 0xDEB8 }, { 0x62, 0xDEB8 }, { 0x63, 0xDEB8 }
- }, 0x00, 0x00 },
- { 0x00, 0x10, {
- { 0x61, 0xDEB8 }, { 0x62, 0xDEB8 }, { 0x63, 0xDEB8 }, { 0x60, 0xDEB8 }
- }, 0x01, 0x00 },
- { 0x00, 0x18, {
- { 0x62, 0xDEB8 }, { 0x63, 0xDEB8 }, { 0x60, 0xDEB8 }, { 0x61, 0xDEB8 }
- }, 0x02, 0x00 },
- { 0x00, 0x20, {
- { 0x63, 0xDEB8 }, { 0x60, 0xDEB8 }, { 0x61, 0xDEB8 }, { 0x62, 0xDEB8 }
- }, 0x03, 0x00 },
- { 0x00, 0x28, {
- { 0x60, 0xDEB8 }, { 0x61, 0xDEB8 }, { 0x62, 0xDEB8 }, { 0x63, 0xDEB8 }
- }, 0x04, 0x00 },
- { 0x00, 0x30, {
- { 0x61, 0xDEB8 }, { 0x62, 0xDEB8 }, { 0x63, 0xDEB8 }, { 0x60, 0xDEB8 }
- }, 0x05, 0x00 },
- }
-};
-
-LEGACY_BIOS_PLATFORM_INSTANCE mPrivateData;
-EFI_HANDLE mImageHandle = NULL;
-
-/**
- Return the handles and assorted information for the specified PCI Class code
-
- @param[in] PciClasses Array of PCI_CLASS_RECORD to find terminated with ClassCode 0xff
- @param[in,out] DeviceTable Table to place handles etc in.
- @param[in,out] DeviceIndex Number of devices found
- @param[in] DeviceFlags FALSE if a valid legacy ROM is required, TRUE otherwise.
-
- @retval EFI_SUCCESS One or more devices found
- @retval EFI_NOT_FOUND No device found
-
-**/
-EFI_STATUS
-FindAllDeviceTypes (
- IN PCI_CLASS_RECORD *PciClasses,
- IN OUT DEVICE_STRUCTURE *DeviceTable,
- IN OUT UINT16 *DeviceIndex,
- IN BOOLEAN DeviceFlags
- )
-{
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- UINTN StartIndex;
- PCI_TYPE00 PciConfigHeader;
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
- UINTN Flags;
- EFI_STATUS Status;
- UINTN Index2;
-
- //
- // Get legacy BIOS protocol as it is required to deal with Option ROMs.
- //
- StartIndex = *DeviceIndex;
- Status = gBS->LocateProtocol (
- &gEfiLegacyBiosProtocolGuid,
- NULL,
- (VOID **)&LegacyBios
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Get all PCI handles and check them to generate a list of matching devices.
- //
- gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- for (Index = 0; Index < HandleCount; Index++) {
- gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
- for (Index2 = 0; PciClasses[Index2].Class != 0xff; Index2++) {
- if ((PciConfigHeader.Hdr.ClassCode[2] == PciClasses[Index2].Class) &&
- (PciConfigHeader.Hdr.ClassCode[1] == PciClasses[Index2].SubClass))
- {
- LegacyBios->CheckPciRom (
- LegacyBios,
- HandleBuffer[Index],
- NULL,
- NULL,
- &Flags
- );
-
- //
- // Verify that results of OPROM check match request.
- // The two valid requests are:
- // DeviceFlags = 0 require a valid legacy ROM
- // DeviceFlags = 1 require either no ROM or a valid legacy ROM
- //
- if (
- ((DeviceFlags != 0) && (Flags == NO_ROM)) ||
- ((Flags & (ROM_FOUND | VALID_LEGACY_ROM)) == (ROM_FOUND | VALID_LEGACY_ROM))
- )
- {
- DeviceTable->Handle = HandleBuffer[Index];
- DeviceTable->Vid = PciConfigHeader.Hdr.VendorId;
- DeviceTable->Did = PciConfigHeader.Hdr.DeviceId;
- DeviceTable->SvId = PciConfigHeader.Device.SubsystemVendorID;
- DeviceTable->SysId = PciConfigHeader.Device.SubsystemID;
- ++*DeviceIndex;
- DeviceTable++;
- }
- }
- }
- }
-
- //
- // Free any allocated buffers
- //
- gBS->FreePool (HandleBuffer);
-
- if (*DeviceIndex != StartIndex) {
- return EFI_SUCCESS;
- } else {
- return EFI_NOT_FOUND;
- }
-}
-
-/**
- Load and initialize the Legacy BIOS SMM handler.
-
- @param This The protocol instance pointer.
- @param EfiToLegacy16BootTable A pointer to Legacy16 boot table.
-
- @retval EFI_SUCCESS SMM code loaded.
- @retval EFI_DEVICE_ERROR SMM code failed to load
-
-**/
-EFI_STATUS
-EFIAPI
-SmmInit (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN VOID *EfiToLegacy16BootTable
- )
-{
- return EFI_SUCCESS;
-}
-
-/**
- Finds the device path that should be used as the primary display adapter.
-
- @param VgaHandle - The handle of the video device
-
-**/
-VOID
-GetSelectedVgaDeviceInfo (
- OUT EFI_HANDLE *VgaHandle
- )
-{
- EFI_STATUS Status;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE00 Pci;
- UINT8 MinBus;
- UINT8 MaxBus;
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
- UINTN SelectedAddress;
- UINTN CurrentAddress;
-
- //
- // Initialize return to 'not found' state
- //
- *VgaHandle = NULL;
-
- //
- // Initialize variable states. This is important for selecting the VGA
- // device if multiple devices exist behind a single bridge.
- //
- HandleCount = 0;
- HandleBuffer = NULL;
- SelectedAddress = PCI_LIB_ADDRESS (0xff, 0x1f, 0x7, 0);
-
- //
- // The bus range to search for a VGA device in.
- //
- MinBus = MaxBus = 0;
-
- //
- // Start to check all the pci io to find all possible VGA device
- //
- HandleCount = 0;
- HandleBuffer = NULL;
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID **)&PciIo);
- if (!EFI_ERROR (Status)) {
- //
- // Determine if this is in the correct bus range.
- //
- Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
- if (EFI_ERROR (Status) || ((Bus < MinBus) || (Bus > MaxBus))) {
- continue;
- }
-
- //
- // Read device information.
- //
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (Pci) / sizeof (UINT32),
- &Pci
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Make sure the device is a VGA device.
- //
- if (!IS_PCI_VGA (&Pci)) {
- continue;
- }
-
- DEBUG ((
- DEBUG_INFO,
- "PCI VGA: 0x%04x:0x%04x\n",
- Pci.Hdr.VendorId,
- Pci.Hdr.DeviceId
- ));
-
- //
- // Currently we use the lowest numbered bus/device/function if multiple
- // devices are found in the target bus range.
- //
- CurrentAddress = PCI_LIB_ADDRESS (Bus, Device, Function, 0);
- if (CurrentAddress < SelectedAddress) {
- SelectedAddress = CurrentAddress;
- *VgaHandle = HandleBuffer[Index];
- }
- }
- }
-
- FreePool (HandleBuffer);
-}
-
-/**
- Returns a buffer of handles for the requested subfunction.
-
- @param This The protocol instance pointer.
- @param Mode Specifies what handle to return. See EFI_GET_PLATFORM_HANDLE_MODE enum.
- @param Type Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
- @param HandleBuffer Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
- @param HandleCount Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
- @param AdditionalData Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
-
- @retval EFI_SUCCESS Handle is valid.
- @retval EFI_UNSUPPORTED Mode is not supported on the platform.
- @retval EFI_NOT_FOUND Handle is not known.
-
-**/
-EFI_STATUS
-EFIAPI
-GetPlatformHandle (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN EFI_GET_PLATFORM_HANDLE_MODE Mode,
- IN UINT16 Type,
- OUT EFI_HANDLE **HandleBuffer,
- OUT UINTN *HandleCount,
- OUT VOID **AdditionalData OPTIONAL
- )
-{
- DEVICE_STRUCTURE LocalDevice[0x40];
- UINT32 LocalIndex;
- UINT32 Index;
- DEVICE_STRUCTURE TempDevice;
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
- HDD_INFO *HddInfo;
- PCI_TYPE00 PciConfigHeader;
- UINT32 HddIndex;
- EFI_HANDLE IdeHandle;
- EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
- PCI_CLASS_RECORD ClassLists[10];
- UINTN PriorityIndex;
-
- static BOOLEAN bConnected = FALSE;
-
- LocalIndex = 0x00;
- HddInfo = NULL;
- HddIndex = 0;
-
- Status = gBS->LocateProtocol (
- &gEfiLegacyBiosProtocolGuid,
- NULL,
- (VOID **)&LegacyBios
- );
-
- //
- // Process mode specific operations
- //
- switch (Mode) {
- case EfiGetPlatformVgaHandle:
- //
- // Get the handle for the currently selected VGA device.
- //
- GetSelectedVgaDeviceInfo (&mVgaHandles[0]);
- *HandleBuffer = &mVgaHandles[0];
- *HandleCount = (mVgaHandles[0] != NULL) ? 1 : 0;
- return EFI_SUCCESS;
- case EfiGetPlatformIdeHandle:
- IdeHandle = NULL;
- if (AdditionalData != NULL) {
- HddInfo = (HDD_INFO *)*AdditionalData;
- }
-
- //
- // Locate all found block io devices
- //
- ClassLists[0].Class = PCI_CLASS_MASS_STORAGE;
- ClassLists[0].SubClass = PCI_CLASS_MASS_STORAGE_SCSI;
- ClassLists[1].Class = PCI_CLASS_MASS_STORAGE;
- ClassLists[1].SubClass = PCI_CLASS_MASS_STORAGE_IDE;
- ClassLists[2].Class = PCI_CLASS_MASS_STORAGE;
- ClassLists[2].SubClass = PCI_CLASS_MASS_STORAGE_RAID;
- ClassLists[3].Class = PCI_CLASS_MASS_STORAGE;
- ClassLists[3].SubClass = PCI_CLASS_MASS_STORAGE_SATADPA;
- ClassLists[4].Class = 0xff;
- FindAllDeviceTypes (ClassLists, LocalDevice, (UINT16 *)&LocalIndex, TRUE);
- if (LocalIndex == 0) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Make sure all IDE controllers are connected. This is necessary
- // in NO_CONFIG_CHANGE boot path to ensure IDE controller is correctly
- // initialized and all IDE drives are enumerated
- //
- if (!bConnected) {
- for (Index = 0; Index < LocalIndex; Index++) {
- gBS->ConnectController (LocalDevice[Index].Handle, NULL, NULL, TRUE);
- }
- }
-
- //
- // Locate onboard controllers.
- //
- for (Index = 0; Index < LocalIndex; Index++) {
- if (LocalDevice[Index].Vid == V_INTEL_VENDOR_ID) {
- if (LocalDevice[Index].Did == V_PIIX4_IDE_DEVICE_ID) {
- IdeHandle = LocalDevice[Index].Handle;
- }
- }
- }
-
- //
- // Set the IDE contorller as primary devices.
- //
- PriorityIndex = 0;
- for (Index = 0; Index < LocalIndex; Index++) {
- if ((LocalDevice[Index].Handle == IdeHandle) && (PriorityIndex == 0)) {
- TempDevice = LocalDevice[PriorityIndex];
- LocalDevice[PriorityIndex] = LocalDevice[Index];
- LocalDevice[Index] = TempDevice;
- PriorityIndex++;
- break;
- }
- }
-
- //
- // Copy over handles and update return values.
- //
- for (Index = 0; Index < LocalIndex; Index++) {
- mDiskHandles[Index] = LocalDevice[Index].Handle;
- }
-
- *HandleBuffer = &mDiskHandles[0];
- *HandleCount = LocalIndex;
-
- //
- // We have connected all IDE controllers once. No more needed
- //
- bConnected = TRUE;
-
- //
- // Log all onboard controllers.
- //
- for (Index = 0; (Index < LocalIndex) && (AdditionalData != NULL); Index++) {
- if ((LocalDevice[Index].Handle != NULL) &&
- (LocalDevice[Index].Handle == IdeHandle))
- {
- Status = gBS->HandleProtocol (
- LocalDevice[Index].Handle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
- if (!EFI_ERROR (Status)) {
- PciIo->GetLocation (
- PciIo,
- &Segment,
- &Bus,
- &Device,
- &Function
- );
-
- //
- // Be sure to only fill out correct information based on platform
- // configuration.
- //
- HddInfo[HddIndex].Status |= HDD_PRIMARY;
- HddInfo[HddIndex].Bus = (UINT32)Bus;
- HddInfo[HddIndex].Device = (UINT32)Device;
- HddInfo[HddIndex].Function = (UINT32)Function;
- HddInfo[HddIndex + 1].Status |= HDD_SECONDARY;
- HddInfo[HddIndex + 1].Bus = (UINT32)Bus;
- HddInfo[HddIndex + 1].Device = (UINT32)Device;
- HddInfo[HddIndex + 1].Function = (UINT32)Function;
-
- //
- // Primary controller data
- //
- if ((PciConfigHeader.Hdr.ClassCode[0] & 0x01) != 0) {
- HddInfo[HddIndex].CommandBaseAddress =
- (UINT16)(PciConfigHeader.Device.Bar[0] & 0xfffc);
- HddInfo[HddIndex].ControlBaseAddress =
- (UINT16)((PciConfigHeader.Device.Bar[1] & 0xfffc)+2);
- HddInfo[HddIndex].BusMasterAddress =
- (UINT16)(PciConfigHeader.Device.Bar[4] & 0xfffc);
- HddInfo[HddIndex].HddIrq = PciConfigHeader.Device.InterruptLine;
- } else {
- HddInfo[HddIndex].HddIrq = 14;
- HddInfo[HddIndex].CommandBaseAddress = 0x1f0;
- HddInfo[HddIndex].ControlBaseAddress = 0x3f6;
- HddInfo[HddIndex].BusMasterAddress = 0;
- }
-
- HddIndex++;
-
- //
- // Secondary controller data
- //
- if ((PciConfigHeader.Hdr.ClassCode[0] & 0x04) != 0) {
- HddInfo[HddIndex].CommandBaseAddress =
- (UINT16)(PciConfigHeader.Device.Bar[2] & 0xfffc);
- HddInfo[HddIndex].ControlBaseAddress =
- (UINT16)((PciConfigHeader.Device.Bar[3] & 0xfffc)+2);
- HddInfo[HddIndex].BusMasterAddress =
- (UINT16)(HddInfo[HddIndex].BusMasterAddress + 8);
- HddInfo[HddIndex].HddIrq = PciConfigHeader.Device.InterruptLine;
- } else {
- HddInfo[HddIndex].HddIrq = 15;
- HddInfo[HddIndex].CommandBaseAddress = 0x170;
- HddInfo[HddIndex].ControlBaseAddress = 0x376;
- HddInfo[HddIndex].BusMasterAddress = 0;
- }
-
- HddIndex++;
- }
- }
- }
-
- return EFI_SUCCESS;
- case EfiGetPlatformIsaBusHandle:
- ClassLists[0].Class = (UINT8)PCI_CLASS_BRIDGE;
- ClassLists[0].SubClass = (UINT8)PCI_CLASS_BRIDGE_ISA_PDECODE;
- ClassLists[1].Class = (UINT8)PCI_CLASS_BRIDGE;
- ClassLists[1].SubClass = (UINT8)PCI_CLASS_BRIDGE_ISA;
- ClassLists[2].Class = 0xff;
-
- //
- // Locate all found block io devices
- //
- FindAllDeviceTypes (ClassLists, LocalDevice, (UINT16 *)(&LocalIndex), TRUE);
- if (LocalIndex == 0) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Find our ISA bridge.
- //
- for (Index = 0; Index < LocalIndex; Index++) {
- if (LocalDevice[Index].Vid == V_INTEL_VENDOR_ID) {
- TempDevice = LocalDevice[0];
- LocalDevice[0] = LocalDevice[Index];
- LocalDevice[Index] = TempDevice;
- }
- }
-
- //
- // Perform copy and update return values.
- //
- for (Index = 0; Index < LocalIndex; Index++) {
- mIsaHandles[Index] = LocalDevice[Index].Handle;
- }
-
- *HandleBuffer = &mIsaHandles[0];
- *HandleCount = LocalIndex;
- return EFI_SUCCESS;
- case EfiGetPlatformUsbHandle:
- default:
- return EFI_UNSUPPORTED;
- }
-}
-
-/**
- Allows platform to perform any required action after a LegacyBios operation.
- Invokes the specific sub function specified by Mode.
-
- @param This The protocol instance pointer.
- @param Mode Specifies what handle to return. See EFI_GET_PLATFORM_HOOK_MODE enum.
- @param Type Mode specific. See EFI_GET_PLATFORM_HOOK_MODE enum.
- @param DeviceHandle Mode specific. See EFI_GET_PLATFORM_HOOK_MODE enum.
- @param ShadowAddress Mode specific. See EFI_GET_PLATFORM_HOOK_MODE enum.
- @param Compatibility16Table Mode specific. See EFI_GET_PLATFORM_HOOK_MODE enum.
- @param AdditionalData Mode specific. See EFI_GET_PLATFORM_HOOK_MODE enum.
-
- @retval EFI_SUCCESS The operation performed successfully. Mode specific.
- @retval EFI_UNSUPPORTED Mode is not supported on the platform.
-
-**/
-EFI_STATUS
-EFIAPI
-PlatformHooks (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN EFI_GET_PLATFORM_HOOK_MODE Mode,
- IN UINT16 Type,
- OUT EFI_HANDLE DeviceHandle OPTIONAL,
- IN OUT UINTN *Shadowaddress OPTIONAL,
- IN EFI_COMPATIBILITY16_TABLE *Compatibility16Table OPTIONAL,
- OUT VOID **AdditionalData OPTIONAL
- )
-{
- EFI_IA32_REGISTER_SET Regs;
- EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
- EFI_STATUS Status;
-
- switch (Mode) {
- case EfiPlatformHookPrepareToScanRom:
- Status = gBS->LocateProtocol (
- &gEfiLegacyBiosProtocolGuid,
- NULL,
- (VOID **)&LegacyBios
- );
-
- //
- // Set the 80x25 Text VGA Mode
- //
- Regs.H.AH = 0x00;
- Regs.H.AL = 0x03;
- Status = LegacyBios->Int86 (LegacyBios, 0x10, &Regs);
- return Status;
- case EfiPlatformHookShadowServiceRoms:
- return EFI_SUCCESS;
- case EfiPlatformHookAfterRomInit:
- default:
- return EFI_UNSUPPORTED;
- }
-}
-
-/**
- Returns information associated with PCI IRQ routing.
- This function returns the following information associated with PCI IRQ routing:
- * An IRQ routing table and number of entries in the table.
- * The $PIR table and its size.
- * A list of PCI IRQs and the priority order to assign them.
-
- @param This The protocol instance pointer.
- @param RoutingTable The pointer to PCI IRQ Routing table.
- This location is the $PIR table minus the header.
- @param RoutingTableEntries The number of entries in table.
- @param LocalPirqTable $PIR table.
- @param PirqTableSize $PIR table size.
- @param LocalIrqPriorityTable A list of interrupts in priority order to assign.
- @param IrqPriorityTableEntries The number of entries in the priority table.
-
- @retval EFI_SUCCESS Data was successfully returned.
-
-**/
-EFI_STATUS
-EFIAPI
-GetRoutingTable (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- OUT VOID **RoutingTable,
- OUT UINTN *RoutingTableEntries,
- OUT VOID **LocalPirqTable OPTIONAL,
- OUT UINTN *PirqTableSize OPTIONAL,
- OUT VOID **LocalIrqPriorityTable OPTIONAL,
- OUT UINTN *IrqPriorityTableEntries OPTIONAL
- )
-{
- UINT16 PTableSize;
- UINT32 Index;
- UINT8 Bus;
- UINT8 Device;
- UINT8 Function;
- UINT8 Checksum;
- UINT8 *Ptr;
- EFI_STATUS Status;
- EFI_LEGACY_INTERRUPT_PROTOCOL *LegacyInterrupt;
-
- Checksum = 0;
-
- if (LocalPirqTable != NULL) {
- PTableSize = sizeof (EFI_LEGACY_PIRQ_TABLE_HEADER) +
- sizeof (EFI_LEGACY_IRQ_ROUTING_ENTRY) * MAX_IRQ_ROUTING_ENTRIES;
-
- Status = gBS->LocateProtocol (
- &gEfiLegacyInterruptProtocolGuid,
- NULL,
- (VOID **)&LegacyInterrupt
- );
- ASSERT_EFI_ERROR (Status);
- LegacyInterrupt->GetLocation (
- LegacyInterrupt,
- &Bus,
- &Device,
- &Function
- );
-
- //
- // Update fields in $PIR table header
- //
- PirqTableHead.PirqTable.TableSize = PTableSize;
- PirqTableHead.PirqTable.Bus = Bus;
- PirqTableHead.PirqTable.DevFun = (UINT8)((Device << 3) + Function);
- Ptr = (UINT8 *)(&PirqTableHead);
-
- //
- // Calculate checksum.
- //
- for (Index = 0; Index < PTableSize; Index++) {
- Checksum = (UINT8)(Checksum + (UINT8)*Ptr);
- Ptr += 1;
- }
-
- Checksum = (UINT8)(0x00 - Checksum);
- PirqTableHead.PirqTable.Checksum = Checksum;
-
- //
- // Update return values.
- //
- *LocalPirqTable = (VOID *)(&PirqTableHead);
- *PirqTableSize = PTableSize;
- }
-
- //
- // More items to return.
- //
- *RoutingTable = PirqTableHead.IrqRoutingEntry;
- *RoutingTableEntries = MAX_IRQ_ROUTING_ENTRIES;
- if (LocalIrqPriorityTable != NULL) {
- *LocalIrqPriorityTable = IrqPriorityTable;
- *IrqPriorityTableEntries = MAX_IRQ_PRIORITY_ENTRIES;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Finds the binary data or other platform information.
-
- @param This The protocol instance pointer.
- @param Mode Specifies what data to return. See See EFI_GET_PLATFORM_INFO_MODE enum.
- @param Table Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
- @param TableSize Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
- @param Location Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
- @param Alignment Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
- @param LegacySegment Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
- @param LegacyOffset Mode specific. See EFI_GET_PLATFORM_INFO_MODE enum.
-
- @retval EFI_SUCCESS Data returned successfully.
- @retval EFI_UNSUPPORTED Mode is not supported on the platform.
- @retval EFI_NOT_FOUND Binary image or table not found.
-
-**/
-EFI_STATUS
-EFIAPI
-GetPlatformInfo (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN EFI_GET_PLATFORM_INFO_MODE Mode,
- OUT VOID **Table,
- OUT UINTN *TableSize,
- OUT UINTN *Location,
- OUT UINTN *Alignment,
- IN UINT16 LegacySegment,
- IN UINT16 LegacyOffset
- )
-{
- EFI_STATUS Status;
- UINTN Index;
-
- switch (Mode) {
- case EfiGetPlatformBinarySystemRom:
- //
- // Loop through table of System rom descriptions
- //
- for (Index = 0; mSystemRomTable[Index].Valid != 0; Index++) {
- Status = GetSectionFromFv (
- &mSystemRomTable[Index].FileName,
- EFI_SECTION_RAW,
- 0,
- Table,
- (UINTN *)TableSize
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- return EFI_SUCCESS;
- }
-
- return EFI_NOT_FOUND;
- case EfiGetPlatformBinaryOem16Data:
- case EfiGetPlatformBinaryMpTable:
- case EfiGetPlatformBinaryOemIntData:
- case EfiGetPlatformBinaryOem32Data:
- case EfiGetPlatformBinaryTpmBinary:
- case EfiGetPlatformPciExpressBase:
- default:
- return EFI_UNSUPPORTED;
- }
-}
-
-/**
- Translates the given PIRQ accounting for bridge.
- This function translates the given PIRQ back through all buses, if required,
- and returns the true PIRQ and associated IRQ.
-
- @param This The protocol instance pointer.
- @param PciBus The PCI bus number for this device.
- @param PciDevice The PCI device number for this device.
- @param PciFunction The PCI function number for this device.
- @param Pirq Input is PIRQ reported by device, and output is true PIRQ.
- @param PciIrq The IRQ already assigned to the PIRQ, or the IRQ to be
- assigned to the PIRQ.
-
- @retval EFI_SUCCESS The PIRQ was translated.
-
-**/
-EFI_STATUS
-EFIAPI
-TranslatePirq (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN UINTN PciBus,
- IN UINTN PciDevice,
- IN UINTN PciFunction,
- IN OUT UINT8 *Pirq,
- OUT UINT8 *PciIrq
- )
-{
- EFI_LEGACY_INTERRUPT_PROTOCOL *LegacyInterrupt;
- EFI_STATUS Status;
- UINTN Index;
- UINTN Index1;
- UINT8 LocalPirq;
- UINT8 PirqData;
- UINT8 MatchData;
-
- Status = gBS->LocateProtocol (
- &gEfiLegacyInterruptProtocolGuid,
- NULL,
- (VOID **)&LegacyInterrupt
- );
- ASSERT_EFI_ERROR (Status);
- LocalPirq = (UINT8)(*Pirq);
-
- for (Index = 0; Index < MAX_IRQ_ROUTING_ENTRIES; Index++) {
- if ((PirqTableHead.IrqRoutingEntry[Index].Bus == PciBus) &&
- (PirqTableHead.IrqRoutingEntry[Index].Device == PciDevice))
- {
- LocalPirq = (UINT8)(PirqTableHead.IrqRoutingEntry[Index].PirqEntry[LocalPirq].Pirq & 0x0f);
- if (LocalPirq > 4) {
- LocalPirq -= 4;
- }
-
- LegacyInterrupt->ReadPirq (LegacyInterrupt, LocalPirq, &PirqData);
- MatchData = PCI_UNUSED;
- while (PirqData == 0) {
- for (Index1 = 0; Index1 < MAX_IRQ_PRIORITY_ENTRIES; Index1++) {
- if ((IrqPriorityTable[Index1].Used == MatchData) &&
- (IrqPriorityTable[Index1].Irq != 0))
- {
- PirqData = IrqPriorityTable[Index1].Irq;
- IrqPriorityTable[Index1].Used = 0xff;
- LegacyInterrupt->WritePirq (
- LegacyInterrupt,
- LocalPirq,
- PirqData
- );
- break;
- }
- }
-
- if (PirqData == 0) {
- //
- // No unused interrupts, so start reusing them.
- //
- MatchData = (UINT8)(~MatchData);
- }
- }
-
- *PciIrq = PirqData;
- *Pirq = LocalPirq;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Attempt to legacy boot the BootOption. If the EFI contexted has been
- compromised this function will not return.
-
- @param This The protocol instance pointer.
- @param BbsDevicePath The EFI Device Path from BootXXXX variable.
- @param BbsTable The Internal BBS table.
- @param LoadOptionSize The size of LoadOption in size.
- @param LoadOption The LoadOption from BootXXXX variable
- @param EfiToLegacy16BootTable A pointer to BootTable structure
-
- @retval EFI_SUCCESS Ready to boot.
-
-**/
-EFI_STATUS
-EFIAPI
-PrepareToBoot (
- IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
- IN BBS_BBS_DEVICE_PATH *BbsDevicePath,
- IN VOID *BbsTable,
- IN UINT32 LoadOptionsSize,
- IN VOID *LoadOptions,
- IN VOID *EfiToLegacy16BootTable
- )
-{
- BBS_TABLE *LocalBbsTable;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *Legacy16BootTable;
- DEVICE_PRODUCER_DATA_HEADER *SioPtr;
- UINT16 DevicePathType;
- UINT16 Index;
- UINT16 Priority;
-
- //
- // Initialize values
- //
- Priority = 0;
- Legacy16BootTable = (EFI_TO_COMPATIBILITY16_BOOT_TABLE *)EfiToLegacy16BootTable;
-
- //
- // Set how Gate A20 is gated by hardware
- //
- SioPtr = &Legacy16BootTable->SioData;
- SioPtr->Flags.A20Kybd = 1;
- SioPtr->Flags.A20Port90 = 1;
- SioPtr->MousePresent = 1;
-
- LocalBbsTable = BbsTable;
-
- //
- // There are 2 cases that must be covered.
- // Case 1: Booting to a legacy OS - BbsDevicePath is non-NULL.
- // Case 2: Booting to an EFI aware OS - BbsDevicePath is NULL.
- // We need to perform the PrepareToBoot function to assign
- // drive numbers to HDD devices to allow the shell or EFI
- // to access them.
- //
- if (BbsDevicePath != NULL) {
- DevicePathType = BbsDevicePath->DeviceType;
- } else {
- DevicePathType = BBS_HARDDISK;
- }
-
- //
- // Skip the boot devices where priority is set by BDS and set the next one
- //
- for (Index = 0; Index < Legacy16BootTable->NumberBbsEntries; Index++) {
- if ((LocalBbsTable[Index].BootPriority != BBS_UNPRIORITIZED_ENTRY) &&
- (LocalBbsTable[Index].BootPriority != BBS_IGNORE_ENTRY) &&
- (LocalBbsTable[Index].BootPriority != BBS_LOWEST_PRIORITY) &&
- (Priority <= LocalBbsTable[Index].BootPriority))
- {
- Priority = (UINT16)(LocalBbsTable[Index].BootPriority + 1);
- }
- }
-
- switch (DevicePathType) {
- case BBS_FLOPPY:
- case BBS_HARDDISK:
- case BBS_CDROM:
- case BBS_EMBED_NETWORK:
- for (Index = 0; Index < Legacy16BootTable->NumberBbsEntries; Index++) {
- if ((LocalBbsTable[Index].BootPriority == BBS_UNPRIORITIZED_ENTRY) &&
- (LocalBbsTable[Index].DeviceType == DevicePathType))
- {
- LocalBbsTable[Index].BootPriority = Priority;
- ++Priority;
- }
- }
-
- break;
- case BBS_BEV_DEVICE:
- for (Index = 0; Index < Legacy16BootTable->NumberBbsEntries; Index++) {
- if ((LocalBbsTable[Index].BootPriority == BBS_UNPRIORITIZED_ENTRY) &&
- (LocalBbsTable[Index].Class == 01) &&
- (LocalBbsTable[Index].SubClass == 01))
- {
- LocalBbsTable[Index].BootPriority = Priority;
- ++Priority;
- }
- }
-
- break;
- case BBS_USB:
- case BBS_PCMCIA:
- case BBS_UNKNOWN:
- default:
- break;
- }
-
- //
- // Set priority for rest of devices
- //
- for (Index = 0; Index < Legacy16BootTable->NumberBbsEntries; Index++) {
- if (LocalBbsTable[Index].BootPriority == BBS_UNPRIORITIZED_ENTRY) {
- LocalBbsTable[Index].BootPriority = Priority;
- ++Priority;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Initialize Legacy Platform support
-
- @retval EFI_SUCCESS Successfully initialized
-
-**/
-EFI_STATUS
-LegacyBiosPlatformInstall (
- VOID
- )
-{
- EFI_STATUS Status;
- LEGACY_BIOS_PLATFORM_INSTANCE *Private;
-
- mImageHandle = gImageHandle;
- Private = &mPrivateData;
-
- //
- // Grab a copy of all the protocols we depend on.
- //
- Private->Signature = LEGACY_BIOS_PLATFORM_INSTANCE_SIGNATURE;
- Private->LegacyBiosPlatform.GetPlatformInfo = GetPlatformInfo;
- Private->LegacyBiosPlatform.GetPlatformHandle = GetPlatformHandle;
- Private->LegacyBiosPlatform.SmmInit = SmmInit;
- Private->LegacyBiosPlatform.PlatformHooks = PlatformHooks;
- Private->LegacyBiosPlatform.GetRoutingTable = GetRoutingTable;
- Private->LegacyBiosPlatform.TranslatePirq = TranslatePirq;
- Private->LegacyBiosPlatform.PrepareToBoot = PrepareToBoot;
- Private->ImageHandle = gImageHandle;
-
- //
- // Make a new handle and install the protocol
- //
- Private->Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Private->Handle,
- &gEfiLegacyBiosPlatformProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &Private->LegacyBiosPlatform
- );
- return Status;
-}
|