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/** @file
The EFI Legacy BIOS Patform Protocol is used to mate a Legacy16
implementation with this EFI code. The EFI driver that produces
the Legacy BIOS protocol is generic and consumes this protocol.
A driver that matches the Legacy16 produces this protocol
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name: LegacyBiosPlatform.h
@par Revision Reference:
This protocol is defined in Framework for EFI Compatibility Support Module spec
Version 0.96
**/
#ifndef _EFI_LEGACY_BIOS_PLATFORM_H
#define _EFI_LEGACY_BIOS_PLATFORM_H
#define EFI_LEGACY_BIOS_PLATFORM_PROTOCOL_GUID \
{ \
0x783658a3, 0x4172, 0x4421, {0xa2, 0x99, 0xe0, 0x9, 0x7, 0x9c, 0xc, 0xb4 } \
}
typedef struct _EFI_LEGACY_BIOS_PLATFORM_PROTOCOL EFI_LEGACY_BIOS_PLATFORM_PROTOCOL;
#pragma pack(1)
//
// Define structures for GetOemIntData
// Note:
// OemIntDataElenent is an array of structures from 0 to Count-1.
// RawData is an array of bytes from 0 to RamDataLength-1.
//
typedef struct {
UINT16 Int;
UINT16 Ax;
UINT32 RawDataLength;
UINT8 RawData[1];
} EFI_OEM_INT_DATA_ELEMENT;
typedef struct {
UINT16 Count;
EFI_OEM_INT_DATA_ELEMENT OemIntDataElement[1];
} EFI_OEM_INT_DATA;
#pragma pack()
typedef enum {
EfiGetPlatformBinaryMpTable = 0,
EfiGetPlatformBinaryOemIntData = 1,
EfiGetPlatformBinaryOem16Data = 2,
EfiGetPlatformBinaryOem32Data = 3,
EfiGetPlatformBinaryTpmBinary = 4,
EfiGetPlatformBinarySystemRom = 5,
EfiGetPlatformPciExpressBase = 6,
EfiGetPlatformPmmSize = 7,
EfiGetPlatformEndOpromShadowAddr = 8,
} EFI_GET_PLATFORM_INFO_MODE;
typedef enum {
EfiGetPlatformVgaHandle = 0,
EfiGetPlatformIdeHandle = 1,
EfiGetPlatformIsaBusHandle = 2,
EfiGetPlatformUsbHandle = 3
} EFI_GET_PLATFORM_HANDLE_MODE;
typedef enum {
EfiPlatformHookPrepareToScanRom = 0,
EfiPlatformHookShadowServiceRoms= 1,
EfiPlatformHookAfterRomInit = 2
} EFI_GET_PLATFORM_HOOK_MODE;
/**
Finds the binary data or other platform information.
@param This Protocol instance pointer.
@param Mode Specifies what data to return
@param Table Pointer to MP table.
@param TableSize Size in bytes of table.
@param Location Legacy region requested
0x00 = Any location
Bit 0 = 0xF0000 region
Bit 1 = 0xE0000 region
Multiple bits can be set
@param Alignment Address alignment for allocation.
Bit mapped. First non-zero bit from right
is alignment.
@param LegacySegment Segment in LegacyBios where Table is stored
@param LegacyOffset Offset in LegacyBios where Table is stored
@retval EFI_SUCCESS Data was returned successfully.
@retval EFI_UNSUPPORTED Mode is not supported on the platform.
@retval EFI_NOT_FOUND Binary image or table not found.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_GET_PLATFORM_INFO) (
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
)
;
/**
Returns a buffer of handles for the requested sub-function.
@param This Protocol instance pointer.
@param Mode Specifies what handle to return.
@param Type Type from Device Path for Handle to represent.
@param HandleBuffer Handles of the device/controller in priority order
with HandleBuffer[0] highest priority.
@param HandleCount Number of handles in the buffer.
@param AdditionalData Mode specific.
@retval EFI_SUCCESS Handle is valid
@retval EFI_UNSUPPORTED Mode is not supported on the platform.
@retval EFI_NOT_FOUND Handle is not known
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_GET_PLATFORM_HANDLE) (
IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
IN EFI_GET_PLATFORM_HANDLE_MODE Mode,
IN UINT16 Type,
OUT EFI_HANDLE **HandleBuffer,
OUT UINTN *HandleCount,
IN VOID **AdditionalData OPTIONAL
)
;
/**
Load and initialize the Legacy BIOS SMM handler.
@param This Protocol instance pointer.
@param EfiToLegacy16BootTable Pointer to Legacy16 boot table.
@retval EFI_SUCCESS SMM code loaded.
@retval EFI_DEVICE_ERROR SMM code failed to load
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_SMM_INIT) (
IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
IN VOID *EfiToLegacy16BootTable
)
;
/**
Allows platform to perform any required action after a LegacyBios operation.
@param This Protocol instance pointer.
@param Mode Specifies what handle to return.
@param Type Mode specific.
@param DeviceHandle List of PCI devices in the system.
@param ShadowAddress First free OpROM area, after other OpROMs have been dispatched.
@param Compatibility16Table Pointer to Compatibility16Table.
@param AdditionalData Mode specific Pointer to additional data returned - mode specific.
@retval EFI_SUCCESS RomImage is valid
@retval EFI_UNSUPPORTED Mode is not supported on the platform.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_HOOKS) (
IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
IN EFI_GET_PLATFORM_HOOK_MODE Mode,
IN UINT16 Type,
IN EFI_HANDLE DeviceHandle,
IN OUT UINTN *ShadowAddress,
IN EFI_COMPATIBILITY16_TABLE *Compatibility16Table,
IN VOID **AdditionalData OPTIONAL
)
;
/**
Returns information associated with PCI IRQ routing.
@param This Protocol instance pointer.
@param RoutingTable Pointer to PCI IRQ Routing table.
@param RoutingTableEntries Number of entries in table.
@param LocalPirqTable $PIR table
@param PirqTableSize $PIR table size
@param LocalIrqPriorityTable List of interrupts in priority order to assign
@param IrqPriorityTableEntries Number of entries in priority table
@retval EFI_SUCCESS Data was successfully returned.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_GET_ROUTING_TABLE) (
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
)
;
/**
Translates the given PIRQ accounting for bridge
@param This Protocol instance pointer.
@param PciBus PCI bus number for this device.
@param PciDevice PCI device number for this device.
@param PciFunction PCI function number for this device.
@param Pirq Input is PIRQ reported by device, 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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_TRANSLATE_PIRQ) (
IN EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *This,
IN UINTN PciBus,
IN UINTN PciDevice,
IN UINTN PciFunction,
IN OUT UINT8 *Pirq,
OUT UINT8 *PciIrq
)
;
/**
Attempt to legacy boot the BootOption. If the EFI contexted has been
compromised this function will not return.
@param This Protocol instance pointer.
@param BbsDevicePath EFI Device Path from BootXXXX variable.
@param BbsTable Internal BBS table.
@param LoadOptionSize Size of LoadOption in size.
@param LoadOption LoadOption from BootXXXX variable
@param EfiToLegacy16BootTable Pointer to BootTable structure
@retval EFI_SUCCESS Ready to boot.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_BIOS_PLATFORM_PREPARE_TO_BOOT) (
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
)
;
/**
@par Protocol Description:
Abstracts the platform portion of the traditional BIOS.
@param GetPlatformInfo
Gets binary data or other platform information.
@param GetPlatformHandle
Returns a buffer of all handles matching the requested subfunction.
@param SmmInit
Loads and initializes the traditional BIOS SMM handler.
@param PlatformHooks
Allows platform to perform any required actions after a LegacyBios operation.
@param GetRoutingTable
Gets $PIR table.
@param TranslatePirq
Translates the given PIRQ to the final value after traversing any PCI bridges.
@param PrepareToBoot
Final platform function before the system attempts to boot to a traditional OS.
**/
struct _EFI_LEGACY_BIOS_PLATFORM_PROTOCOL {
EFI_LEGACY_BIOS_PLATFORM_GET_PLATFORM_INFO GetPlatformInfo;
EFI_LEGACY_BIOS_PLATFORM_GET_PLATFORM_HANDLE GetPlatformHandle;
EFI_LEGACY_BIOS_PLATFORM_SMM_INIT SmmInit;
EFI_LEGACY_BIOS_PLATFORM_HOOKS PlatformHooks;
EFI_LEGACY_BIOS_PLATFORM_GET_ROUTING_TABLE GetRoutingTable;
EFI_LEGACY_BIOS_PLATFORM_TRANSLATE_PIRQ TranslatePirq;
EFI_LEGACY_BIOS_PLATFORM_PREPARE_TO_BOOT PrepareToBoot;
};
extern EFI_GUID gEfiLegacyBiosPlatformProtocolGuid;
#endif
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