8c0b0b34f7
Correct some typos (discovered with the codespell utility) Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Thomas Huth <thuth@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
1067 lines
36 KiB
C
1067 lines
36 KiB
C
/** @file
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Legacy BIOS Platform support
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are
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licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "LegacyPlatform.h"
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EFI_SETUP_BBS_MAP mSetupBbsMap[] = {
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{ 1, 2, 1, 1 }, // ATA HardDrive
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{ 2, 3, 1, 1 }, // ATAPI CDROM
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{ 3, 0x80, 2, 0 }, // PXE
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{ 4, 1, 0, 6 }, // USB Floppy
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{ 4, 2, 0, 6 }, // USB HDD
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{ 4, 3, 0, 6 }, // USB CD
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{ 4, 1, 0, 0 }, // USB ZIP Bugbug since Class/SubClass code is uninitialized
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{ 4, 2, 0, 0 } // USB ZIP Bugbug since Class/SubClass code is uninitialized
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};
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//
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// Global variables for System ROMs
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//
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#define SYSTEM_ROM_FILE_GUID \
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{ 0x1547B4F3, 0x3E8A, 0x4FEF, { 0x81, 0xC8, 0x32, 0x8E, 0xD6, 0x47, 0xAB, 0x1A } }
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#define NULL_ROM_FILE_GUID \
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{ 0x00000000, 0x0000, 0x0000, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
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SYSTEM_ROM_TABLE mSystemRomTable[] = {
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{ SYSTEM_ROM_FILE_GUID, 1 },
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{ NULL_ROM_FILE_GUID, 0 }
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};
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EFI_HANDLE mVgaHandles[0x20];
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EFI_HANDLE mDiskHandles[0x20];
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EFI_HANDLE mIsaHandles[0x20];
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EFI_LEGACY_IRQ_PRIORITY_TABLE_ENTRY IrqPriorityTable[MAX_IRQ_PRIORITY_ENTRIES] = {
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{0x0B,0},
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{0x09,0},
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{0x0A,0},
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{0x05,0},
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{0x07,0},
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{0x00,0},
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{0x00,0}
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};
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//
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// PIRQ Table
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// - Slot numbering will be used to update the bus number and determine bridge
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// to check to get bus number. The Slot number - 1 is an index into a decode
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// table to get the bridge information.
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//
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EFI_LEGACY_PIRQ_TABLE PirqTableHead = {
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{
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EFI_LEGACY_PIRQ_TABLE_SIGNATURE, // UINT32 Signature
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0x00, // UINT8 MinorVersion
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0x01, // UINT8 MajorVersion
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0x0000, // UINT16 TableSize
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0x00, // UINT8 Bus
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0x08, // UINT8 DevFun
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0x0000, // UINT16 PciOnlyIrq
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0x8086, // UINT16 CompatibleVid
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0x122e, // UINT16 CompatibleDid
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0x00000000, // UINT32 Miniport
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{ // UINT8 Reserved[11]
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00
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},
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0x00, // UINT8 Checksum
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},
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{
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// -- Pin 1 -- -- Pin 2 -- -- Pin 3 -- -- Pin 4 --
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// Bus Dev Reg Map Reg Map Reg Map Reg Map
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//
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{0x00,0x08,{{0x60,0xDEB8},{0x61,0xDEB8},{0x62,0xDEB8},{0x63,0xDEB8}},0x00,0x00},
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{0x00,0x10,{{0x61,0xDEB8},{0x62,0xDEB8},{0x63,0xDEB8},{0x60,0xDEB8}},0x01,0x00},
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{0x00,0x18,{{0x62,0xDEB8},{0x63,0xDEB8},{0x60,0xDEB8},{0x61,0xDEB8}},0x02,0x00},
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{0x00,0x20,{{0x63,0xDEB8},{0x60,0xDEB8},{0x61,0xDEB8},{0x62,0xDEB8}},0x03,0x00},
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{0x00,0x28,{{0x60,0xDEB8},{0x61,0xDEB8},{0x62,0xDEB8},{0x63,0xDEB8}},0x04,0x00},
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{0x00,0x30,{{0x61,0xDEB8},{0x62,0xDEB8},{0x63,0xDEB8},{0x60,0xDEB8}},0x05,0x00},
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}
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};
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LEGACY_BIOS_PLATFORM_INSTANCE mPrivateData;
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EFI_HANDLE mImageHandle = NULL;
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/**
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Return the handles and assorted information for the specified PCI Class code
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@param[in] PciClasses Array of PCI_CLASS_RECORD to find terminated with ClassCode 0xff
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@param[in,out] DeviceTable Table to place handles etc in.
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@param[in,out] DeviceIndex Number of devices found
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@param[in] DeviceFlags FALSE if a valid legacy ROM is required, TRUE otherwise.
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@retval EFI_SUCCESS One or more devices found
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@retval EFI_NOT_FOUND No device found
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**/
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EFI_STATUS
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FindAllDeviceTypes (
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IN PCI_CLASS_RECORD *PciClasses,
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IN OUT DEVICE_STRUCTURE *DeviceTable,
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IN OUT UINT16 *DeviceIndex,
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IN BOOLEAN DeviceFlags
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)
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{
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UINTN HandleCount;
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EFI_HANDLE *HandleBuffer;
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UINTN Index;
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UINTN StartIndex;
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PCI_TYPE00 PciConfigHeader;
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EFI_PCI_IO_PROTOCOL *PciIo;
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EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
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UINTN Flags;
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EFI_STATUS Status;
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UINTN Index2;
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//
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// Get legacy BIOS protocol as it is required to deal with Option ROMs.
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//
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StartIndex = *DeviceIndex;
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Status = gBS->LocateProtocol (
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&gEfiLegacyBiosProtocolGuid,
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NULL,
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(VOID**)&LegacyBios
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);
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ASSERT_EFI_ERROR (Status);
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//
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// Get all PCI handles and check them to generate a list of matching devices.
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//
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gBS->LocateHandleBuffer (
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ByProtocol,
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&gEfiPciIoProtocolGuid,
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NULL,
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&HandleCount,
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&HandleBuffer
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);
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for (Index = 0; Index < HandleCount; Index++) {
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gBS->HandleProtocol (
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HandleBuffer[Index],
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&gEfiPciIoProtocolGuid,
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(VOID**)&PciIo
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);
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PciIo->Pci.Read (
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PciIo,
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EfiPciIoWidthUint32,
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0,
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sizeof (PciConfigHeader) / sizeof (UINT32),
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&PciConfigHeader
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);
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for (Index2 = 0; PciClasses[Index2].Class != 0xff; Index2++) {
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if ((PciConfigHeader.Hdr.ClassCode[2] == PciClasses[Index2].Class) &&
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(PciConfigHeader.Hdr.ClassCode[1] == PciClasses[Index2].SubClass)) {
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LegacyBios->CheckPciRom (
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LegacyBios,
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HandleBuffer[Index],
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NULL,
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NULL,
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&Flags
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);
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//
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// Verify that results of OPROM check match request.
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// The two valid requests are:
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// DeviceFlags = 0 require a valid legacy ROM
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// DeviceFlags = 1 require either no ROM or a valid legacy ROM
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//
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if (
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((DeviceFlags != 0) && (Flags == NO_ROM)) ||
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((Flags & (ROM_FOUND | VALID_LEGACY_ROM)) == (ROM_FOUND | VALID_LEGACY_ROM))
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) {
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DeviceTable->Handle = HandleBuffer[Index];
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DeviceTable->Vid = PciConfigHeader.Hdr.VendorId;
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DeviceTable->Did = PciConfigHeader.Hdr.DeviceId;
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DeviceTable->SvId = PciConfigHeader.Device.SubsystemVendorID;
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DeviceTable->SysId = PciConfigHeader.Device.SubsystemID;
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++ *DeviceIndex;
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DeviceTable++;
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}
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}
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}
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}
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//
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// Free any allocated buffers
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//
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gBS->FreePool (HandleBuffer);
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if (*DeviceIndex != StartIndex) {
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return EFI_SUCCESS;
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} else {
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return EFI_NOT_FOUND;
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}
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}
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/**
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Load and initialize the Legacy BIOS SMM handler.
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@param This The protocol instance pointer.
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@param EfiToLegacy16BootTable A pointer to Legacy16 boot table.
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@retval EFI_SUCCESS SMM code loaded.
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@retval EFI_DEVICE_ERROR SMM code failed to load
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**/
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EFI_STATUS
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EFIAPI
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SmmInit (
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IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
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IN VOID *EfiToLegacy16BootTable
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)
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{
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return EFI_SUCCESS;
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}
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/**
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Finds the device path that should be used as the primary display adapter.
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@param VgaHandle - The handle of the video device
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**/
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VOID
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GetSelectedVgaDeviceInfo (
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OUT EFI_HANDLE *VgaHandle
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)
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{
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EFI_STATUS Status;
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UINTN HandleCount;
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EFI_HANDLE *HandleBuffer;
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UINTN Index;
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EFI_PCI_IO_PROTOCOL *PciIo;
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PCI_TYPE00 Pci;
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UINT8 MinBus;
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UINT8 MaxBus;
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UINTN Segment;
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UINTN Bus;
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UINTN Device;
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UINTN Function;
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UINTN SelectedAddress;
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UINTN CurrentAddress;
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//
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// Initialize return to 'not found' state
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//
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*VgaHandle = NULL;
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//
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// Initialize variable states. This is important for selecting the VGA
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// device if multiple devices exist behind a single bridge.
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//
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HandleCount = 0;
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HandleBuffer = NULL;
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SelectedAddress = PCI_LIB_ADDRESS(0xff, 0x1f, 0x7, 0);
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//
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// The bus range to search for a VGA device in.
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//
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MinBus = MaxBus = 0;
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//
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// Start to check all the pci io to find all possible VGA device
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//
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HandleCount = 0;
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HandleBuffer = NULL;
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Status = gBS->LocateHandleBuffer (
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ByProtocol,
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&gEfiPciIoProtocolGuid,
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NULL,
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&HandleCount,
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&HandleBuffer
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);
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if (EFI_ERROR (Status)) {
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return;
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}
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for (Index = 0; Index < HandleCount; Index++) {
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Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID**)&PciIo);
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if (!EFI_ERROR (Status)) {
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//
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// Detemine if this is in the correct bus range.
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//
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Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
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if (EFI_ERROR(Status) || (Bus < MinBus || Bus > MaxBus)) {
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continue;
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}
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//
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// Read device information.
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//
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Status = PciIo->Pci.Read (
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PciIo,
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EfiPciIoWidthUint32,
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0,
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sizeof (Pci) / sizeof (UINT32),
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&Pci
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);
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if (EFI_ERROR (Status)) {
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continue;
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}
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//
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// Make sure the device is a VGA device.
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//
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if (!IS_PCI_VGA (&Pci)) {
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continue;
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}
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DEBUG ((EFI_D_INFO,
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"PCI VGA: 0x%04x:0x%04x\n",
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Pci.Hdr.VendorId,
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Pci.Hdr.DeviceId
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));
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//
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// Currently we use the lowest numbered bus/device/function if multiple
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// devices are found in the target bus range.
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//
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CurrentAddress = PCI_LIB_ADDRESS(Bus, Device, Function, 0);
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if (CurrentAddress < SelectedAddress) {
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SelectedAddress = CurrentAddress;
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*VgaHandle = HandleBuffer[Index];
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}
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}
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}
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FreePool (HandleBuffer);
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}
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/**
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Returns a buffer of handles for the requested subfunction.
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@param This The protocol instance pointer.
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@param Mode Specifies what handle to return. See EFI_GET_PLATFORM_HANDLE_MODE enum.
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@param Type Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
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@param HandleBuffer Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
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@param HandleCount Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
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@param AdditionalData Mode specific. See EFI_GET_PLATFORM_HANDLE_MODE enum.
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@retval EFI_SUCCESS Handle is valid.
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@retval EFI_UNSUPPORTED Mode is not supported on the platform.
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@retval EFI_NOT_FOUND Handle is not known.
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**/
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EFI_STATUS
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EFIAPI
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GetPlatformHandle (
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IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
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IN EFI_GET_PLATFORM_HANDLE_MODE Mode,
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IN UINT16 Type,
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OUT EFI_HANDLE **HandleBuffer,
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OUT UINTN *HandleCount,
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OUT VOID **AdditionalData OPTIONAL
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)
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{
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DEVICE_STRUCTURE LocalDevice[0x40];
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UINT32 LocalIndex;
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UINT32 Index;
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DEVICE_STRUCTURE TempDevice;
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EFI_STATUS Status;
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EFI_PCI_IO_PROTOCOL *PciIo;
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UINTN Segment;
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UINTN Bus;
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UINTN Device;
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UINTN Function;
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HDD_INFO *HddInfo;
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PCI_TYPE00 PciConfigHeader;
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UINT32 HddIndex;
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EFI_HANDLE IdeHandle;
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EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
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PCI_CLASS_RECORD ClassLists[10];
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UINTN PriorityIndex;
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static BOOLEAN bConnected = FALSE;
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LocalIndex = 0x00;
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HddInfo = NULL;
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HddIndex = 0;
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Status = gBS->LocateProtocol (
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&gEfiLegacyBiosProtocolGuid,
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NULL,
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(VOID**)&LegacyBios
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);
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//
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// Process mode specific operations
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//
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switch (Mode) {
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case EfiGetPlatformVgaHandle:
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//
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// Get the handle for the currently selected VGA device.
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//
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GetSelectedVgaDeviceInfo (&mVgaHandles[0]);
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*HandleBuffer = &mVgaHandles[0];
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*HandleCount = (mVgaHandles[0] != NULL) ? 1 : 0;
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return EFI_SUCCESS;
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case EfiGetPlatformIdeHandle:
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IdeHandle = NULL;
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if (AdditionalData != NULL) {
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HddInfo = (HDD_INFO *) *AdditionalData;
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}
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//
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// Locate all found block io devices
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//
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ClassLists[0].Class = PCI_CLASS_MASS_STORAGE;
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ClassLists[0].SubClass = PCI_CLASS_MASS_STORAGE_SCSI;
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ClassLists[1].Class = PCI_CLASS_MASS_STORAGE;
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ClassLists[1].SubClass = PCI_CLASS_MASS_STORAGE_IDE;
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ClassLists[2].Class = PCI_CLASS_MASS_STORAGE;
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ClassLists[2].SubClass = PCI_CLASS_MASS_STORAGE_RAID;
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ClassLists[3].Class = PCI_CLASS_MASS_STORAGE;
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ClassLists[3].SubClass = PCI_CLASS_MASS_STORAGE_SATADPA;
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ClassLists[4].Class = 0xff;
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FindAllDeviceTypes (ClassLists, LocalDevice, (UINT16 *) &LocalIndex, TRUE);
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if (LocalIndex == 0) {
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return EFI_NOT_FOUND;
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}
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//
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// Make sure all IDE controllers are connected. This is necessary
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// in NO_CONFIG_CHANGE boot path to ensure IDE controller is correctly
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// initialized and all IDE drives are enumerated
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//
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if (!bConnected) {
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for (Index = 0; Index < LocalIndex; Index++) {
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gBS->ConnectController (LocalDevice[Index].Handle, NULL, NULL, TRUE);
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}
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}
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//
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// Locate onboard controllers.
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//
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for (Index = 0; Index < LocalIndex; Index++) {
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if (LocalDevice[Index].Vid == V_INTEL_VENDOR_ID) {
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if (LocalDevice[Index].Did == V_PIIX4_IDE_DEVICE_ID) {
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IdeHandle = LocalDevice[Index].Handle;
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}
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}
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}
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//
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// Set the IDE contorller as primary devices.
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//
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PriorityIndex = 0;
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for (Index = 0; Index < LocalIndex; Index++) {
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if (LocalDevice[Index].Handle == IdeHandle && PriorityIndex == 0) {
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TempDevice = LocalDevice[PriorityIndex];
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LocalDevice[PriorityIndex] = LocalDevice[Index];
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LocalDevice[Index] = TempDevice;
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PriorityIndex++;
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break;
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}
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}
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//
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// Copy over handles and update return values.
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//
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for (Index = 0; Index < LocalIndex; Index++) {
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mDiskHandles[Index] = LocalDevice[Index].Handle;
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}
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*HandleBuffer = &mDiskHandles[0];
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*HandleCount = LocalIndex;
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|
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//
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// We have connected all IDE controllers once. No more needed
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//
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bConnected = TRUE;
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|
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//
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// Log all onboard controllers.
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//
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for (Index = 0; (Index < LocalIndex) && (AdditionalData != NULL); Index++) {
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if ((LocalDevice[Index].Handle != NULL) &&
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(LocalDevice[Index].Handle == IdeHandle)) {
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Status = gBS->HandleProtocol (
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LocalDevice[Index].Handle,
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&gEfiPciIoProtocolGuid,
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(VOID **) &PciIo
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);
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PciIo->Pci.Read (
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PciIo,
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EfiPciIoWidthUint32,
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0,
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sizeof (PciConfigHeader) / sizeof (UINT32),
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&PciConfigHeader
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);
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if (!EFI_ERROR (Status)) {
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PciIo->GetLocation (
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PciIo,
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&Segment,
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&Bus,
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&Device,
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&Function
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);
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//
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// Be sure to only fill out correct information based on platform
|
|
// configureation.
|
|
//
|
|
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 interrpts, 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;
|
|
}
|
|
|