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add modules DiskIo, Partition and SecurityStub.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2732 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2007-06-25 12:01:28 +00:00
parent e4d8dbc920
commit 79840ee114
25 changed files with 4502 additions and 1 deletions
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46
MdeModulePkg/Universal/Disk/DiskIo/Dxe/CommonHeader.h Normal file
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/**@file
Common header file shared by all source files.
This file includes package header files, library classes and protocol, PPI & GUID definitions.
Copyright (c) 2006 - 2007, 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.
**/
#ifndef __COMMON_HEADER_H_
#define __COMMON_HEADER_H_
//
// The package level header files this module uses
//
#include <Uefi.h>
//
// The protocols, PPI and GUID defintions for this module
//
#include <Protocol/BlockIo.h>
#include <Protocol/ComponentName.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/DiskIo.h>
//
// The Library classes this module consumes
//
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
//
// Driver Binding Externs
//
extern EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName;
#endif

144
MdeModulePkg/Universal/Disk/DiskIo/Dxe/ComponentName.c Normal file
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/*++
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:
ComponentName.c
Abstract:
--*/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
#include "DiskIo.h"
//
// EFI Component Name Protocol
//
EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName = {
DiskIoComponentNameGetDriverName,
DiskIoComponentNameGetControllerName,
"eng"
};
static EFI_UNICODE_STRING_TABLE mDiskIoDriverNameTable[] = {
{
"eng",
(CHAR16 *)L"Generic Disk I/O Driver"
},
{
NULL,
NULL
}
};
EFI_STATUS
EFIAPI
DiskIoComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
)
/*++
Routine Description:
Retrieves a Unicode string that is the user readable name of the EFI Driver.
Arguments:
This - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
Language - A pointer to a three character ISO 639-2 language identifier.
This is the language of the driver name that that the caller
is requesting, and it must match one of the languages specified
in SupportedLanguages. The number of languages supported by a
driver is up to the driver writer.
DriverName - A pointer to the Unicode string to return. This Unicode string
is the name of the driver specified by This in the language
specified by Language.
Returns:
EFI_SUCCESS - The Unicode string for the Driver specified by This
and the language specified by Language was returned
in DriverName.
EFI_INVALID_PARAMETER - Language is NULL.
EFI_INVALID_PARAMETER - DriverName is NULL.
EFI_UNSUPPORTED - The driver specified by This does not support the
language specified by Language.
--*/
{
return LookupUnicodeString (
Language,
gDiskIoComponentName.SupportedLanguages,
mDiskIoDriverNameTable,
DriverName
);
}
EFI_STATUS
EFIAPI
DiskIoComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
)
/*++
Routine Description:
Retrieves a Unicode string that is the user readable name of the controller
that is being managed by an EFI Driver.
Arguments:
This - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
ControllerHandle - The handle of a controller that the driver specified by
This is managing. This handle specifies the controller
whose name is to be returned.
ChildHandle - The handle of the child controller to retrieve the name
of. This is an optional parameter that may be NULL. It
will be NULL for device drivers. It will also be NULL
for a bus drivers that wish to retrieve the name of the
bus controller. It will not be NULL for a bus driver
that wishes to retrieve the name of a child controller.
Language - A pointer to a three character ISO 639-2 language
identifier. This is the language of the controller name
that that the caller is requesting, and it must match one
of the languages specified in SupportedLanguages. The
number of languages supported by a driver is up to the
driver writer.
ControllerName - A pointer to the Unicode string to return. This Unicode
string is the name of the controller specified by
ControllerHandle and ChildHandle in the language specified
by Language from the point of view of the driver specified
by This.
Returns:
EFI_SUCCESS - The Unicode string for the user readable name in the
language specified by Language for the driver
specified by This was returned in DriverName.
EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.
EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.
EFI_INVALID_PARAMETER - Language is NULL.
EFI_INVALID_PARAMETER - ControllerName is NULL.
EFI_UNSUPPORTED - The driver specified by This is not currently managing
the controller specified by ControllerHandle and
ChildHandle.
EFI_UNSUPPORTED - The driver specified by This does not support the
language specified by Language.
--*/
{
return EFI_UNSUPPORTED;
}

122
MdeModulePkg/Universal/Disk/DiskIo/Dxe/DiskIo.h Normal file
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/*++
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:
DiskIo.h
Abstract:
Private Data definition for Disk IO driver
--*/
#ifndef _DISK_IO_H
#define _DISK_IO_H
//
// Include common header file for this module.
//
#include "CommonHeader.h"
#define DISK_IO_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('d', 's', 'k', 'I')
#define DATA_BUFFER_BLOCK_NUM (64)
typedef struct {
UINTN Signature;
EFI_DISK_IO_PROTOCOL DiskIo;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
} DISK_IO_PRIVATE_DATA;
#define DISK_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo, DISK_IO_PRIVATE_DATA_SIGNATURE)
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName;
//
// Prototypes
// Driver model protocol interface
//
EFI_STATUS
EFIAPI
DiskIoDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
DiskIoDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
DiskIoDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
//
// Disk I/O Protocol Interface
//
EFI_STATUS
EFIAPI
DiskIoReadDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
OUT VOID *Buffer
);
EFI_STATUS
EFIAPI
DiskIoWriteDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
IN VOID *Buffer
);
//
// EFI Component Name Functions
//
EFI_STATUS
EFIAPI
DiskIoComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
);
EFI_STATUS
EFIAPI
DiskIoComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
);
#endif

105
MdeModulePkg/Universal/Disk/DiskIo/Dxe/DiskIo.inf Normal file
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#/** @file
# Component description file for DiskIo module.
#
# DiskIo driver that layers it's self on every Block IO protocol in the system.
# Copyright (c) 2006 - 2007, 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.
#
#
#**/
################################################################################
#
# Defines Section - statements that will be processed to create a Makefile.
#
################################################################################
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = DiskIo
FILE_GUID = 6B38F7B4-AD98-40e9-9093-ACA2B5A253C4
MODULE_TYPE = UEFI_DRIVER
VERSION_STRING = 1.0
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
ENTRY_POINT = InitializeDiskIo
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF EBC
#
# DRIVER_BINDING = gDiskIoDriverBinding
# COMPONENT_NAME = gDiskIoComponentName
#
################################################################################
#
# Sources Section - list of files that are required for the build to succeed.
#
################################################################################
[Sources.common]
ComponentName.c
DiskIo.h
diskio.c
CommonHeader.h
EntryPoint.c
################################################################################
#
# Includes Section - list of Include locations that are required for
# this module.
#
################################################################################
[Includes]
$(WORKSPACE)/MdePkg\Include/Library
################################################################################
#
# Package Dependency Section - list of Package files that are required for
# this module.
#
################################################################################
[Packages]
$(WORKSPACE)\MdeModulePkg/MdeModulePkg.dec
$(WORKSPACE)\MdePkg/MdePkg.dec
################################################################################
#
# Library Class Section - list of Library Classes that are required for
# this module.
#
################################################################################
[LibraryClasses]
UefiBootServicesTableLib
MemoryAllocationLib
BaseMemoryLib
BaseLib
UefiLib
UefiDriverEntryPoint
DebugLib
################################################################################
#
# Protocol C Name Section - list of Protocol and Protocol Notify C Names
# that this module uses or produces.
#
################################################################################
[Protocols]
gEfiDiskIoProtocolGuid # PROTOCOL BY_START
gEfiBlockIoProtocolGuid # PROTOCOL TO_START

75
MdeModulePkg/Universal/Disk/DiskIo/Dxe/DiskIo.msa Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0">
<MsaHeader>
<ModuleName>DiskIo</ModuleName>
<ModuleType>UEFI_DRIVER</ModuleType>
<GuidValue>6B38F7B4-AD98-40e9-9093-ACA2B5A253C4</GuidValue>
<Version>1.0</Version>
<Abstract>Component description file for DiskIo module.</Abstract>
<Description>DiskIo driver that layers it's self on every Block IO protocol in the system.</Description>
<Copyright>Copyright (c) 2006 - 2007, Intel Corporation</Copyright>
<License>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.</License>
<Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
</MsaHeader>
<ModuleDefinitions>
<SupportedArchitectures>IA32 X64 IPF EBC</SupportedArchitectures>
<BinaryModule>false</BinaryModule>
<OutputFileBasename>DiskIo</OutputFileBasename>
</ModuleDefinitions>
<LibraryClassDefinitions>
<LibraryClass Usage="ALWAYS_CONSUMED" RecommendedInstanceGuid="bda39d3a-451b-4350-8266-81ab10fa0523">
<Keyword>DebugLib</Keyword>
<HelpText>Recommended libary Instance is PeiDxeDebugLibReportStatusCode instance in MdePkg.</HelpText>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiDriverModelLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiDriverEntryPoint</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>BaseLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>BaseMemoryLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>MemoryAllocationLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiBootServicesTableLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>diskio.c</Filename>
<Filename>DiskIo.h</Filename>
<Filename>ComponentName.c</Filename>
</SourceFiles>
<PackageDependencies>
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
</PackageDependencies>
<Protocols>
<Protocol Usage="TO_START">
<ProtocolCName>gEfiBlockIoProtocolGuid</ProtocolCName>
</Protocol>
<Protocol Usage="BY_START">
<ProtocolCName>gEfiDiskIoProtocolGuid</ProtocolCName>
</Protocol>
</Protocols>
<Externs>
<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
<Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
<Extern>
<DriverBinding>gDiskIoDriverBinding</DriverBinding>
<ComponentName>gDiskIoComponentName</ComponentName>
</Extern>
</Externs>
</ModuleSurfaceArea>

56
MdeModulePkg/Universal/Disk/DiskIo/Dxe/EntryPoint.c Normal file
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/**@file
Entry Point Source file.
This file contains the user entry point
Copyright (c) 2006 - 2007, 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.
**/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
/**
The user Entry Point for module DiskIo. The user code starts with this function.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
InitializeDiskIo(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install driver model protocol(s).
//
Status = EfiLibInstallAllDriverProtocols (
ImageHandle,
SystemTable,
&gDiskIoDriverBinding,
ImageHandle,
&gDiskIoComponentName,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}

734
MdeModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c Normal file
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/*++
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:
DiskIo.c
Abstract:
DiskIo driver that layers it's self on every Block IO protocol in the system.
DiskIo converts a block oriented device to a byte oriented device.
ReadDisk may have to do reads that are not aligned on sector boundaries.
There are three cases:
UnderRun - The first byte is not on a sector boundary or the read request is
less than a sector in length.
Aligned - A read of N contiguous sectors.
OverRun - The last byte is not on a sector boundary.
--*/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
#include "DiskIo.h"
EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding = {
DiskIoDriverBindingSupported,
DiskIoDriverBindingStart,
DiskIoDriverBindingStop,
0xa,
NULL,
NULL
};
DISK_IO_PRIVATE_DATA gDiskIoPrivateDataTemplate = {
DISK_IO_PRIVATE_DATA_SIGNATURE,
{
EFI_DISK_IO_PROTOCOL_REVISION,
DiskIoReadDisk,
DiskIoWriteDisk
},
NULL
};
EFI_STATUS
EFIAPI
DiskIoDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
/*++
Routine Description:
Test to see if this driver supports ControllerHandle. Any ControllerHandle
than contains a BlockIo protocol can be supported.
Arguments:
This - Protocol instance pointer.
ControllerHandle - Handle of device to test.
RemainingDevicePath - Not used.
Returns:
EFI_SUCCESS - This driver supports this device.
EFI_ALREADY_STARTED - This driver is already running on this device.
other - This driver does not support this device.
--*/
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
//
// Open the IO Abstraction(s) needed to perform the supported test.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Close the I/O Abstraction(s) used to perform the supported test.
//
gBS->CloseProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
DiskIoDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
/*++
Routine Description:
Start this driver on ControllerHandle by opening a Block IO protocol and
installing a Disk IO protocol on ControllerHandle.
Arguments:
This - Protocol instance pointer.
ControllerHandle - Handle of device to bind driver to.
RemainingDevicePath - Not used, always produce all possible children.
Returns:
EFI_SUCCESS - This driver is added to ControllerHandle.
EFI_ALREADY_STARTED - This driver is already running on ControllerHandle.
other - This driver does not support this device.
--*/
{
EFI_STATUS Status;
DISK_IO_PRIVATE_DATA *Private;
Private = NULL;
//
// Connect to the Block IO interface on ControllerHandle.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
(VOID **) &gDiskIoPrivateDataTemplate.BlockIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Initialize the Disk IO device instance.
//
Private = AllocateCopyPool (sizeof (DISK_IO_PRIVATE_DATA), &gDiskIoPrivateDataTemplate);
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ErrorExit;
}
//
// Install protocol interfaces for the Disk IO device.
//
Status = gBS->InstallProtocolInterface (
&ControllerHandle,
&gEfiDiskIoProtocolGuid,
EFI_NATIVE_INTERFACE,
&Private->DiskIo
);
ErrorExit:
if (EFI_ERROR (Status)) {
if (Private != NULL) {
FreePool (Private);
}
gBS->CloseProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
}
return Status;
}
EFI_STATUS
EFIAPI
DiskIoDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
/*++
Routine Description:
Stop this driver on ControllerHandle by removing Disk IO protocol and closing
the Block IO protocol on ControllerHandle.
Arguments:
This - Protocol instance pointer.
ControllerHandle - Handle of device to stop driver on.
NumberOfChildren - Not used.
ChildHandleBuffer - Not used.
Returns:
EFI_SUCCESS - This driver is removed ControllerHandle.
other - This driver was not removed from this device.
EFI_UNSUPPORTED
--*/
{
EFI_STATUS Status;
EFI_DISK_IO_PROTOCOL *DiskIo;
DISK_IO_PRIVATE_DATA *Private;
//
// Get our context back.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiDiskIoProtocolGuid,
(VOID **) &DiskIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Private = DISK_IO_PRIVATE_DATA_FROM_THIS (DiskIo);
Status = gBS->UninstallProtocolInterface (
ControllerHandle,
&gEfiDiskIoProtocolGuid,
&Private->DiskIo
);
if (!EFI_ERROR (Status)) {
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
}
if (!EFI_ERROR (Status)) {
FreePool (Private);
}
return Status;
}
EFI_STATUS
EFIAPI
DiskIoReadDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
OUT VOID *Buffer
)
/*++
Routine Description:
Read BufferSize bytes from Offset into Buffer.
Reads may support reads that are not aligned on
sector boundaries. There are three cases:
UnderRun - The first byte is not on a sector boundary or the read request is
less than a sector in length.
Aligned - A read of N contiguous sectors.
OverRun - The last byte is not on a sector boundary.
Arguments:
This - Protocol instance pointer.
MediaId - Id of the media, changes every time the media is replaced.
Offset - The starting byte offset to read from.
BufferSize - Size of Buffer.
Buffer - Buffer containing read data.
Returns:
EFI_SUCCESS - The data was read correctly from the device.
EFI_DEVICE_ERROR - The device reported an error while performing the read.
EFI_NO_MEDIA - There is no media in the device.
EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
EFI_INVALID_PARAMETER - The read request contains device addresses that are not
valid for the device.
EFI_OUT_OF_RESOURCES
--*/
{
EFI_STATUS Status;
DISK_IO_PRIVATE_DATA *Private;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_BLOCK_IO_MEDIA *Media;
UINT32 BlockSize;
UINT64 Lba;
UINT64 OverRunLba;
UINT32 UnderRun;
UINT32 OverRun;
BOOLEAN TransactionComplete;
UINTN WorkingBufferSize;
UINT8 *WorkingBuffer;
UINTN Length;
UINT8 *Data;
UINT8 *PreData;
UINTN IsBufferAligned;
UINTN DataBufferSize;
BOOLEAN LastRead;
Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
BlockIo = Private->BlockIo;
Media = BlockIo->Media;
BlockSize = Media->BlockSize;
if (Media->MediaId != MediaId) {
return EFI_MEDIA_CHANGED;
}
WorkingBuffer = Buffer;
WorkingBufferSize = BufferSize;
//
// Allocate a temporary buffer for operation
//
DataBufferSize = BlockSize * DATA_BUFFER_BLOCK_NUM;
if (Media->IoAlign > 1) {
PreData = AllocatePool (DataBufferSize + Media->IoAlign);
Data = PreData - ((UINTN) PreData & (Media->IoAlign - 1)) + Media->IoAlign;
} else {
PreData = AllocatePool (DataBufferSize);
Data = PreData;
}
if (PreData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
Length = BlockSize - UnderRun;
TransactionComplete = FALSE;
Status = EFI_SUCCESS;
if (UnderRun != 0) {
//
// Offset starts in the middle of an Lba, so read the entire block.
//
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
Lba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
if (Length > BufferSize) {
Length = BufferSize;
TransactionComplete = TRUE;
}
CopyMem (WorkingBuffer, Data + UnderRun, Length);
WorkingBuffer += Length;
WorkingBufferSize -= Length;
if (WorkingBufferSize == 0) {
goto Done;
}
Lba += 1;
}
OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
//
// If the DiskIo maps directly to a BlockIo device do the read.
//
if (OverRun != 0) {
WorkingBufferSize -= OverRun;
}
//
// Check buffer alignment
//
IsBufferAligned = (UINTN) WorkingBuffer & (UINTN) (Media->IoAlign - 1);
if (Media->IoAlign <= 1 || IsBufferAligned == 0) {
//
// Alignment is satisfied, so read them together
//
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
Lba,
WorkingBufferSize,
WorkingBuffer
);
if (EFI_ERROR (Status)) {
goto Done;
}
WorkingBuffer += WorkingBufferSize;
} else {
//
// Use the allocated buffer instead of the original buffer
// to avoid alignment issue.
// Here, the allocated buffer (8-byte align) can satisfy the alignment
//
LastRead = FALSE;
do {
if (WorkingBufferSize <= DataBufferSize) {
//
// It is the last calling to readblocks in this loop
//
DataBufferSize = WorkingBufferSize;
LastRead = TRUE;
}
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
Lba,
DataBufferSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
CopyMem (WorkingBuffer, Data, DataBufferSize);
WorkingBufferSize -= DataBufferSize;
WorkingBuffer += DataBufferSize;
Lba += DATA_BUFFER_BLOCK_NUM;
} while (!LastRead);
}
}
if (!TransactionComplete && OverRun != 0) {
//
// Last read is not a complete block.
//
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
OverRunLba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
CopyMem (WorkingBuffer, Data, OverRun);
}
Done:
if (PreData != NULL) {
FreePool (PreData);
}
return Status;
}
EFI_STATUS
EFIAPI
DiskIoWriteDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
IN VOID *Buffer
)
/*++
Routine Description:
Read BufferSize bytes from Offset into Buffer.
Writes may require a read modify write to support writes that are not
aligned on sector boundaries. There are three cases:
UnderRun - The first byte is not on a sector boundary or the write request
is less than a sector in length. Read modify write is required.
Aligned - A write of N contiguous sectors.
OverRun - The last byte is not on a sector boundary. Read modified write
required.
Arguments:
This - Protocol instance pointer.
MediaId - Id of the media, changes every time the media is replaced.
Offset - The starting byte offset to read from.
BufferSize - Size of Buffer.
Buffer - Buffer containing read data.
Returns:
EFI_SUCCESS - The data was written correctly to the device.
EFI_WRITE_PROTECTED - The device can not be written to.
EFI_DEVICE_ERROR - The device reported an error while performing the write.
EFI_NO_MEDIA - There is no media in the device.
EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
EFI_INVALID_PARAMETER - The write request contains device addresses that are not
valid for the device.
EFI_OUT_OF_RESOURCES
--*/
{
EFI_STATUS Status;
DISK_IO_PRIVATE_DATA *Private;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_BLOCK_IO_MEDIA *Media;
UINT32 BlockSize;
UINT64 Lba;
UINT64 OverRunLba;
UINT32 UnderRun;
UINT32 OverRun;
BOOLEAN TransactionComplete;
UINTN WorkingBufferSize;
UINT8 *WorkingBuffer;
UINTN Length;
UINT8 *Data;
UINT8 *PreData;
UINTN IsBufferAligned;
UINTN DataBufferSize;
BOOLEAN LastWrite;
Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
BlockIo = Private->BlockIo;
Media = BlockIo->Media;
BlockSize = Media->BlockSize;
if (Media->ReadOnly) {
return EFI_WRITE_PROTECTED;
}
if (Media->MediaId != MediaId) {
return EFI_MEDIA_CHANGED;
}
DataBufferSize = BlockSize * DATA_BUFFER_BLOCK_NUM;
if (Media->IoAlign > 1) {
PreData = AllocatePool (DataBufferSize + Media->IoAlign);
Data = PreData - ((UINTN) PreData & (Media->IoAlign - 1)) + Media->IoAlign;
} else {
PreData = AllocatePool (DataBufferSize);
Data = PreData;
}
if (PreData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
WorkingBuffer = Buffer;
WorkingBufferSize = BufferSize;
Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
Length = BlockSize - UnderRun;
TransactionComplete = FALSE;
Status = EFI_SUCCESS;
if (UnderRun != 0) {
//
// Offset starts in the middle of an Lba, so do read modify write.
//
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
Lba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
if (Length > BufferSize) {
Length = BufferSize;
TransactionComplete = TRUE;
}
CopyMem (Data + UnderRun, WorkingBuffer, Length);
Status = BlockIo->WriteBlocks (
BlockIo,
MediaId,
Lba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
WorkingBuffer += Length;
WorkingBufferSize -= Length;
if (WorkingBufferSize == 0) {
goto Done;
}
Lba += 1;
}
OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
//
// If the DiskIo maps directly to a BlockIo device do the write.
//
if (OverRun != 0) {
WorkingBufferSize -= OverRun;
}
//
// Check buffer alignment
//
IsBufferAligned = (UINTN) WorkingBuffer & (UINTN) (Media->IoAlign - 1);
if (Media->IoAlign <= 1 || IsBufferAligned == 0) {
//
// Alignment is satisfied, so write them together
//
Status = BlockIo->WriteBlocks (
BlockIo,
MediaId,
Lba,
WorkingBufferSize,
WorkingBuffer
);
if (EFI_ERROR (Status)) {
goto Done;
}
WorkingBuffer += WorkingBufferSize;
} else {
//
// The buffer parameter is not aligned with the request
// So use the allocated instead.
// It can fit almost all the cases.
//
LastWrite = FALSE;
do {
if (WorkingBufferSize <= DataBufferSize) {
//
// It is the last calling to writeblocks in this loop
//
DataBufferSize = WorkingBufferSize;
LastWrite = TRUE;
}
CopyMem (Data, WorkingBuffer, DataBufferSize);
Status = BlockIo->WriteBlocks (
BlockIo,
MediaId,
Lba,
DataBufferSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
WorkingBufferSize -= DataBufferSize;
WorkingBuffer += DataBufferSize;
Lba += DATA_BUFFER_BLOCK_NUM;
} while (!LastWrite);
}
}
if (!TransactionComplete && OverRun != 0) {
//
// Last bit is not a complete block, so do a read modify write.
//
Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
OverRunLba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
CopyMem (Data, WorkingBuffer, OverRun);
Status = BlockIo->WriteBlocks (
BlockIo,
MediaId,
OverRunLba,
BlockSize,
Data
);
if (EFI_ERROR (Status)) {
goto Done;
}
}
Done:
if (PreData != NULL) {
FreePool (PreData);
}
return Status;
}