mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-11 14:28:08 +01:00
565 lines
18 KiB
C
565 lines
18 KiB
C
|
/** @file
|
||
|
|
||
|
Copyright (c) 1999 - 2011, Intel Corporation. All rights reserved.<BR>
|
||
|
|
||
|
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.
|
||
|
|
||
|
**/
|
||
|
|
||
|
#ifndef _BIOS_BLOCK_IO_H_
|
||
|
#define _BIOS_BLOCK_IO_H_
|
||
|
|
||
|
#include <Uefi.h>
|
||
|
|
||
|
#include <Protocol/BlockIo.h>
|
||
|
#include <Protocol/BlockIo2.h>
|
||
|
#include <Protocol/PciIo.h>
|
||
|
#include <Protocol/LegacyBios.h>
|
||
|
#include <Protocol/Legacy8259.h>
|
||
|
#include <Protocol/DevicePath.h>
|
||
|
#include <Guid/LegacyBios.h>
|
||
|
#include <Guid/BlockIoVendor.h>
|
||
|
|
||
|
#include <Library/UefiDriverEntryPoint.h>
|
||
|
#include <Library/DebugLib.h>
|
||
|
#include <Library/BaseMemoryLib.h>
|
||
|
#include <Library/UefiBootServicesTableLib.h>
|
||
|
#include <Library/UefiLib.h>
|
||
|
#include <Library/DevicePathLib.h>
|
||
|
#include <Library/MemoryAllocationLib.h>
|
||
|
|
||
|
#include <Library/MemLogLib.h>
|
||
|
#include <Library/PrintLib.h>
|
||
|
|
||
|
#include <IndustryStandard/Pci.h>
|
||
|
|
||
|
#include "Edd.h"
|
||
|
|
||
|
//
|
||
|
// Global Variables
|
||
|
//
|
||
|
extern EFI_COMPONENT_NAME_PROTOCOL gBiosBlockIoComponentName;
|
||
|
extern EFI_COMPONENT_NAME2_PROTOCOL gBiosBlockIoComponentName2;
|
||
|
|
||
|
|
||
|
//
|
||
|
// Define the I2O class code
|
||
|
//
|
||
|
#define PCI_BASE_CLASS_INTELLIGENT 0x0e
|
||
|
#define PCI_SUB_CLASS_INTELLIGENT 0x00
|
||
|
|
||
|
//
|
||
|
// Number of pages needed for our buffer under 1MB
|
||
|
//
|
||
|
#define BLOCK_IO_BUFFER_PAGE_SIZE (((sizeof (EDD_DEVICE_ADDRESS_PACKET) + sizeof (BIOS_LEGACY_DRIVE) + MAX_EDD11_XFER) / EFI_PAGE_SIZE) + 1 \
|
||
|
)
|
||
|
|
||
|
//
|
||
|
// Driver Binding Protocol functions
|
||
|
//
|
||
|
|
||
|
/**
|
||
|
Check whether the driver supports this device.
|
||
|
|
||
|
@param This The Udriver binding protocol.
|
||
|
@param Controller The controller handle to check.
|
||
|
@param RemainingDevicePath The remaining device path.
|
||
|
|
||
|
@retval EFI_SUCCESS The driver supports this controller.
|
||
|
@retval other This device isn't supported.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoDriverBindingSupported (
|
||
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||
|
IN EFI_HANDLE Controller,
|
||
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
|
||
|
);
|
||
|
|
||
|
|
||
|
/**
|
||
|
Starts the device with this driver.
|
||
|
|
||
|
@param This The driver binding instance.
|
||
|
@param Controller Handle of device to bind driver to.
|
||
|
@param RemainingDevicePath Optional parameter use to pick a specific child
|
||
|
device to start.
|
||
|
|
||
|
@retval EFI_SUCCESS The controller is controlled by the driver.
|
||
|
@retval Other This controller cannot be started.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoDriverBindingStart (
|
||
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||
|
IN EFI_HANDLE Controller,
|
||
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Stop the device handled by this driver.
|
||
|
|
||
|
@param This The driver binding protocol.
|
||
|
@param Controller The controller to release.
|
||
|
@param NumberOfChildren The number of handles in ChildHandleBuffer.
|
||
|
@param ChildHandleBuffer The array of child handle.
|
||
|
|
||
|
@retval EFI_SUCCESS The device was stopped.
|
||
|
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
|
||
|
@retval Others Fail to uninstall protocols attached on the device.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoDriverBindingStop (
|
||
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||
|
IN EFI_HANDLE Controller,
|
||
|
IN UINTN NumberOfChildren,
|
||
|
IN EFI_HANDLE *ChildHandleBuffer
|
||
|
);
|
||
|
|
||
|
//
|
||
|
// Other internal functions
|
||
|
//
|
||
|
|
||
|
/**
|
||
|
Build device path for EDD 3.0.
|
||
|
|
||
|
@param BaseDevicePath Base device path.
|
||
|
@param Drive Legacy drive.
|
||
|
@param DevicePath Device path for output.
|
||
|
|
||
|
@retval EFI_SUCCESS The device path is built successfully.
|
||
|
@retval EFI_UNSUPPORTED It is failed to built device path.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
BuildEdd30DevicePath (
|
||
|
IN EFI_DEVICE_PATH_PROTOCOL *BaseDevicePath,
|
||
|
IN BIOS_LEGACY_DRIVE *Drive,
|
||
|
IN EFI_DEVICE_PATH_PROTOCOL **DevicePath
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Initialize block I/O device instance
|
||
|
|
||
|
@param Dev Instance of block I/O device instance
|
||
|
|
||
|
@retval TRUE Initialization succeeds.
|
||
|
@retval FALSE Initialization fails.
|
||
|
|
||
|
**/
|
||
|
BOOLEAN
|
||
|
BiosInitBlockIo (
|
||
|
IN BIOS_BLOCK_IO_DEV *Dev
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Read BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId Id of the media, changes every time the media is replaced.
|
||
|
@param Lba The starting Logical Block Address to read from
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the destination buffer for the data. The caller is
|
||
|
responsible for either having implicit or explicit ownership of the buffer.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was read correctly from the device.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd30BiosReadBlocks (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd30BiosReadBlocksEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Write BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId The media ID that the write request is for.
|
||
|
@param Lba The starting logical block address to be written. The caller is
|
||
|
responsible for writing to only legitimate locations.
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the source buffer for the data.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was written correctly to the device.
|
||
|
@retval EFI_WRITE_PROTECTED The device can not be written to.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd30BiosWriteBlocks (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd30BiosWriteBlocksEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Flush the Block Device.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
|
||
|
@retval EFI_SUCCESS All outstanding data was written to the device
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while writting back the data
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoFlushBlocks (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoFlushBlocksEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Reset the Block Device.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param ExtendedVerification Driver may perform diagnostics on reset.
|
||
|
|
||
|
@retval EFI_SUCCESS The device was reset.
|
||
|
@retval EFI_DEVICE_ERROR The device is not functioning properly and could
|
||
|
not be reset.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoReset (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN BOOLEAN ExtendedVerification
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosBlockIoReset2 (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN BOOLEAN ExtendedVerification
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Read BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId Id of the media, changes every time the media is replaced.
|
||
|
@param Lba The starting Logical Block Address to read from
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the destination buffer for the data. The caller is
|
||
|
responsible for either having implicit or explicit ownership of the buffer.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was read correctly from the device.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd11BiosReadBlocks (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd11BiosReadBlocksEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Write BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId The media ID that the write request is for.
|
||
|
@param Lba The starting logical block address to be written. The caller is
|
||
|
responsible for writing to only legitimate locations.
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the source buffer for the data.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was written correctly to the device.
|
||
|
@retval EFI_WRITE_PROTECTED The device can not be written to.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd11BiosWriteBlocks (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
Edd11BiosWriteBlocksEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Read BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId Id of the media, changes every time the media is replaced.
|
||
|
@param Lba The starting Logical Block Address to read from
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the destination buffer for the data. The caller is
|
||
|
responsible for either having implicit or explicit ownership of the buffer.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was read correctly from the device.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosReadLegacyDrive (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosReadLegacyDriveEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Write BufferSize bytes from Lba into Buffer.
|
||
|
|
||
|
@param This Indicates a pointer to the calling context.
|
||
|
@param MediaId The media ID that the write request is for.
|
||
|
@param Lba The starting logical block address to be written. The caller is
|
||
|
responsible for writing to only legitimate locations.
|
||
|
@param BufferSize Size of Buffer, must be a multiple of device block size.
|
||
|
@param Buffer A pointer to the source buffer for the data.
|
||
|
|
||
|
@retval EFI_SUCCESS The data was written correctly to the device.
|
||
|
@retval EFI_WRITE_PROTECTED The device can not be written to.
|
||
|
@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
|
||
|
@retval EFI_NO_MEDIA There is no media in the device.
|
||
|
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
|
||
|
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
|
||
|
@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
|
||
|
or the buffer is not on proper alignment.
|
||
|
|
||
|
**/
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosWriteLegacyDrive (
|
||
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
EFI_STATUS
|
||
|
EFIAPI
|
||
|
BiosWriteLegacyDriveEx (
|
||
|
IN EFI_BLOCK_IO2_PROTOCOL *This,
|
||
|
IN UINT32 MediaId,
|
||
|
IN EFI_LBA Lba,
|
||
|
IN OUT EFI_BLOCK_IO2_TOKEN *Token,
|
||
|
IN UINTN BufferSize,
|
||
|
OUT VOID *Buffer
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Gets parameters of block I/O device.
|
||
|
|
||
|
@param BiosBlockIoDev Instance of block I/O device.
|
||
|
@param Drive Legacy drive.
|
||
|
|
||
|
@return Result of device parameter retrieval.
|
||
|
|
||
|
**/
|
||
|
UINTN
|
||
|
Int13GetDeviceParameters (
|
||
|
IN BIOS_BLOCK_IO_DEV *BiosBlockIoDev,
|
||
|
IN BIOS_LEGACY_DRIVE *Drive
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Extension of INT13 call.
|
||
|
|
||
|
@param BiosBlockIoDev Instance of block I/O device.
|
||
|
@param Drive Legacy drive.
|
||
|
|
||
|
@return Result of this extension.
|
||
|
|
||
|
**/
|
||
|
UINTN
|
||
|
Int13Extensions (
|
||
|
IN BIOS_BLOCK_IO_DEV *BiosBlockIoDev,
|
||
|
IN BIOS_LEGACY_DRIVE *Drive
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Gets parameters of legacy drive.
|
||
|
|
||
|
@param BiosBlockIoDev Instance of block I/O device.
|
||
|
@param Drive Legacy drive.
|
||
|
|
||
|
@return Result of drive parameter retrieval.
|
||
|
|
||
|
**/
|
||
|
UINTN
|
||
|
GetDriveParameters (
|
||
|
IN BIOS_BLOCK_IO_DEV *BiosBlockIoDev,
|
||
|
IN BIOS_LEGACY_DRIVE *Drive
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Build device path for device.
|
||
|
|
||
|
@param BaseDevicePath Base device path.
|
||
|
@param Drive Legacy drive.
|
||
|
@param DevicePath Device path for output.
|
||
|
|
||
|
**/
|
||
|
VOID
|
||
|
SetBiosInitBlockIoDevicePath (
|
||
|
IN EFI_DEVICE_PATH_PROTOCOL *BaseDevicePath,
|
||
|
IN BIOS_LEGACY_DRIVE *Drive,
|
||
|
OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Initialize legacy environment for BIOS INI caller.
|
||
|
|
||
|
@param ThunkContext the instance pointer of THUNK_CONTEXT
|
||
|
**/
|
||
|
VOID
|
||
|
InitializeBiosIntCaller (
|
||
|
THUNK_CONTEXT *ThunkContext
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Initialize interrupt redirection code and entries, because
|
||
|
IDT Vectors 0x68-0x6f must be redirected to IDT Vectors 0x08-0x0f.
|
||
|
Or the interrupt will lost when we do thunk.
|
||
|
NOTE: We do not reset 8259 vector base, because it will cause pending
|
||
|
interrupt lost.
|
||
|
|
||
|
@param Legacy8259 Instance pointer for EFI_LEGACY_8259_PROTOCOL.
|
||
|
|
||
|
**/
|
||
|
VOID
|
||
|
InitializeInterruptRedirection (
|
||
|
IN EFI_LEGACY_8259_PROTOCOL *Legacy8259
|
||
|
);
|
||
|
|
||
|
/**
|
||
|
Thunk to 16-bit real mode and execute a software interrupt with a vector
|
||
|
of BiosInt. Regs will contain the 16-bit register context on entry and
|
||
|
exit.
|
||
|
|
||
|
@param This Protocol instance pointer.
|
||
|
@param BiosInt Processor interrupt vector to invoke
|
||
|
@param Reg Register contexted passed into (and returned) from thunk to 16-bit mode
|
||
|
|
||
|
@retval TRUE Thunk completed, and there were no BIOS errors in the target code.
|
||
|
See Regs for status.
|
||
|
@retval FALSE There was a BIOS erro in the target code.
|
||
|
**/
|
||
|
BOOLEAN
|
||
|
EFIAPI
|
||
|
LegacyBiosInt86 (
|
||
|
IN BIOS_BLOCK_IO_DEV *BiosDev,
|
||
|
IN UINT8 BiosInt,
|
||
|
IN IA32_REGISTER_SET *Regs
|
||
|
);
|
||
|
|
||
|
|
||
|
#endif
|