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DxeIpl
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DevicePath

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3069 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xgu3
2007-07-05 07:05:28 +00:00
parent 8a7f0c4c6b
commit 95276127e3
63 changed files with 23601 additions and 7 deletions
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44
MdeModulePkg/Universal/DevicePathDxe/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 <PiDxe.h>
//
// The protocols, PPI and GUID defintions for this module
//
#include <Protocol/DevicePathUtilities.h>
#include <Protocol/DebugPort.h>
#include <Protocol/DevicePathToText.h>
#include <Protocol/DevicePathFromText.h>
#include <Guid/PcAnsi.h>
//
// The Library classes this module consumes
//
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DevicePathLib.h>
#include <Library/PcdLib.h>
#endif

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MdeModulePkg/Universal/DevicePathDxe/DevicePath.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:
DevicePathDriver.c
Abstract:
Device Path Driver to produce DevPathUtilities Protocol, DevPathFromText Protocol
and DevPathToText Protocol.
--*/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
#include "DevicePath.h"
EFI_HANDLE mDevicePathHandle = NULL;
GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {
GetDevicePathSizeProtocolInterface,
DuplicateDevicePathProtocolInterface,
AppendDevicePathProtocolInterface,
AppendDeviceNodeProtocolInterface,
AppendDevicePathInstanceProtocolInterface,
GetNextDevicePathInstanceProtocolInterface,
IsDevicePathMultiInstanceProtocolInterface,
CreateDeviceNodeProtocolInterface
};
GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_TO_TEXT_PROTOCOL mDevicePathToText = {
ConvertDeviceNodeToText,
ConvertDevicePathToText
};
GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {
ConvertTextToDeviceNode,
ConvertTextToDevicePath
};
GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;
GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingSASGuid = DEVICE_PATH_MESSAGING_SAS;
EFI_STATUS
EFIAPI
DevicePathEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Entry point for EFI drivers.
Arguments:
ImageHandle - EFI_HANDLE
SystemTable - EFI_SYSTEM_TABLE
Returns:
EFI_SUCCESS
others
--*/
{
EFI_STATUS Status;
Status = EFI_UNSUPPORTED;
if (FeaturePcdGet (PcdDevicePathSupportDevicePathToText)) {
if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {
Status = gBS->InstallMultipleProtocolInterfaces (
&mDevicePathHandle,
&gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
&gEfiDevicePathToTextProtocolGuid, &mDevicePathToText,
&gEfiDevicePathFromTextProtocolGuid, &mDevicePathFromText,
NULL
);
} else {
Status = gBS->InstallMultipleProtocolInterfaces (
&mDevicePathHandle,
&gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
&gEfiDevicePathToTextProtocolGuid, &mDevicePathToText,
NULL
);
}
} else {
if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {
Status = gBS->InstallMultipleProtocolInterfaces (
&mDevicePathHandle,
&gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
&gEfiDevicePathFromTextProtocolGuid, &mDevicePathFromText,
NULL
);
} else {
Status = gBS->InstallMultipleProtocolInterfaces (
&mDevicePathHandle,
&gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
NULL
);
}
}
return Status;
}

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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:
DevicePath.h
Abstract:
Definition for Device Path Utilities driver
--*/
#ifndef _DEVICE_PATH_DRIVER_H
#define _DEVICE_PATH_DRIVER_H
//
// Include common header file for this module.
//
#include "CommonHeader.h"
extern const EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid;
extern const EFI_GUID mEfiDevicePathMessagingSASGuid;
#define MAX_CHAR 480
#define MIN_ALIGNMENT_SIZE sizeof(UINTN)
#define ALIGN_SIZE(a) ((a % MIN_ALIGNMENT_SIZE) ? MIN_ALIGNMENT_SIZE - (a % MIN_ALIGNMENT_SIZE) : 0)
#define IS_COMMA(a) ((a) == L',')
#define IS_HYPHEN(a) ((a) == L'-')
#define IS_DOT(a) ((a) == L'.')
#define IS_LEFT_PARENTH(a) ((a) == L'(')
#define IS_RIGHT_PARENTH(a) ((a) == L')')
#define IS_SLASH(a) ((a) == L'/')
#define IS_NULL(a) ((a) == L'\0')
#define DEVICE_NODE_END 1
#define DEVICE_PATH_INSTANCE_END 2
#define DEVICE_PATH_END 3
#define SetDevicePathInstanceEndNode(a) { \
(a)->Type = END_DEVICE_PATH_TYPE; \
(a)->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE; \
(a)->Length[0] = sizeof (EFI_DEVICE_PATH_PROTOCOL); \
(a)->Length[1] = 0; \
}
//
// Private Data structure
//
typedef struct {
CHAR16 *Str;
UINTN Len;
UINTN MaxLen;
} POOL_PRINT;
typedef struct {
UINT8 Type;
UINT8 SubType;
VOID (*Function) (POOL_PRINT *, VOID *, BOOLEAN, BOOLEAN);
} DEVICE_PATH_TO_TEXT_TABLE;
typedef struct {
CHAR16 *DevicePathNodeText;
EFI_DEVICE_PATH_PROTOCOL * (*Function) (CHAR16 *);
} DEVICE_PATH_FROM_TEXT_TABLE;
typedef struct {
BOOLEAN ClassExist;
UINT8 Class;
BOOLEAN SubClassExist;
UINT8 SubClass;
} USB_CLASS_TEXT;
#define USB_CLASS_AUDIO 1
#define USB_CLASS_CDCCONTROL 2
#define USB_CLASS_HID 3
#define USB_CLASS_IMAGE 6
#define USB_CLASS_PRINTER 7
#define USB_CLASS_MASS_STORAGE 8
#define USB_CLASS_HUB 9
#define USB_CLASS_CDCDATA 10
#define USB_CLASS_SMART_CARD 11
#define USB_CLASS_VIDEO 14
#define USB_CLASS_DIAGNOSTIC 220
#define USB_CLASS_WIRELESS 224
#define USB_CLASS_RESERVE 254
#define USB_SUBCLASS_FW_UPDATE 1
#define USB_SUBCLASS_IRDA_BRIDGE 2
#define USB_SUBCLASS_TEST 3
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT8 VendorDefinedData[1];
} VENDOR_DEFINED_HARDWARE_DEVICE_PATH;
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT8 VendorDefinedData[1];
} VENDOR_DEFINED_MESSAGING_DEVICE_PATH;
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT8 VendorDefinedData[1];
} VENDOR_DEFINED_MEDIA_DEVICE_PATH;
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 HID;
UINT32 UID;
UINT32 CID;
CHAR8 HidUidCidStr[3];
} ACPI_EXTENDED_HID_DEVICE_PATH_WITH_STR;
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 NetworkProtocol;
UINT16 LoginOption;
UINT16 Reserved;
UINT16 TargetPortalGroupTag;
UINT64 Lun;
CHAR16 iSCSITargetName[1];
} ISCSI_DEVICE_PATH_WITH_NAME;
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT8 VendorDefinedData[1];
} VENDOR_DEVICE_PATH_WITH_DATA;
CHAR16 *
ConvertDeviceNodeToText (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,
IN BOOLEAN DisplayOnly,
IN BOOLEAN AllowShortcuts
)
/*++
Routine Description:
Convert a device node to its text representation.
Arguments:
DeviceNode - Points to the device node to be converted.
DisplayOnly - If DisplayOnly is TRUE, then the shorter text representation
of the display node is used, where applicable. If DisplayOnly
is FALSE, then the longer text representation of the display node
is used.
AllowShortcuts - If AllowShortcuts is TRUE, then the shortcut forms of text
representation for a device node can be used, where applicable.
Returns:
A pointer - a pointer to the allocated text representation of the device node.
NULL - if DeviceNode is NULL or there was insufficient memory.
--*/
;
CHAR16 *
ConvertDevicePathToText (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,
IN BOOLEAN DisplayOnly,
IN BOOLEAN AllowShortcuts
)
/*++
Routine Description:
Convert a device path to its text representation.
Arguments:
DeviceNode - Points to the device path to be converted.
DisplayOnly - If DisplayOnly is TRUE, then the shorter text representation
of the display node is used, where applicable. If DisplayOnly
is FALSE, then the longer text representation of the display node
is used.
AllowShortcuts - If AllowShortcuts is TRUE, then the shortcut forms of text
representation for a device node can be used, where applicable.
Returns:
A pointer - a pointer to the allocated text representation of the device path.
NULL - if DeviceNode is NULL or there was insufficient memory.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
ConvertTextToDeviceNode (
IN CONST CHAR16 *TextDeviceNode
)
/*++
Routine Description:
Convert text to the binary representation of a device node.
Arguments:
TextDeviceNode - TextDeviceNode points to the text representation of a device
node. Conversion starts with the first character and continues
until the first non-device node character.
Returns:
A pointer - Pointer to the EFI device node.
NULL - if TextDeviceNode is NULL or there was insufficient memory.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
ConvertTextToDevicePath (
IN CONST CHAR16 *TextDevicePath
)
/*++
Routine Description:
Convert text to the binary representation of a device path.
Arguments:
TextDevicePath - TextDevicePath points to the text representation of a device
path. Conversion starts with the first character and continues
until the first non-device node character.
Returns:
A pointer - Pointer to the allocated device path.
NULL - if TextDeviceNode is NULL or there was insufficient memory.
--*/
;
UINTN
GetDevicePathSizeProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Returns the size of the device path, in bytes.
Arguments:
DevicePath - Points to the start of the EFI device path.
Returns:
Size - Size of the specified device path, in bytes, including the end-of-path tag.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
DuplicateDevicePathProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Create a duplicate of the specified path.
Arguments:
DevicePath - Points to the source EFI device path.
Returns:
Pointer - A pointer to the duplicate device path.
NULL - Insufficient memory.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePathProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src1,
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src2
)
/*++
Routine Description:
Create a new path by appending the second device path to the first.
Arguments:
Src1 - Points to the first device path. If NULL, then it is ignored.
Src2 - Points to the second device path. If NULL, then it is ignored.
Returns:
Pointer - A pointer to the newly created device path.
NULL - Memory could not be allocated
or either DevicePath or DeviceNode is NULL.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
AppendDeviceNodeProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode
)
/*++
Routine Description:
Creates a new path by appending the device node to the device path.
Arguments:
DevicePath - Points to the device path.
DeviceNode - Points to the device node.
Returns:
Pointer - A pointer to the allocated device node.
NULL - Memory could not be allocated
or either DevicePath or DeviceNode is NULL.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePathInstanceProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance
)
/*++
Routine Description:
Creates a new path by appending the specified device path instance to the specified device path.
Arguments:
DevicePath - Points to the device path. If NULL, then ignored.
DevicePathInstance - Points to the device path instance.
Returns:
Pointer - A pointer to the newly created device path
NULL - Memory could not be allocated or DevicePathInstance is NULL.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
GetNextDevicePathInstanceProtocolInterface (
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePathInstance,
OUT UINTN *DevicePathInstanceSize
)
/*++
Routine Description:
Creates a copy of the current device path instance and returns a pointer to the next device path instance.
Arguments:
DevicePathInstance - On input, this holds the pointer to the current device path
instance. On output, this holds the pointer to the next
device path instance or NULL if there are no more device
path instances in the device path.
DevicePathInstanceSize - On output, this holds the size of the device path instance,
in bytes or zero, if DevicePathInstance is zero.
Returns:
Pointer - A pointer to the copy of the current device path instance.
NULL - DevicePathInstace was NULL on entry or there was insufficient memory.
--*/
;
BOOLEAN
IsDevicePathMultiInstanceProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Returns whether a device path is multi-instance.
Arguments:
DevicePath - Points to the device path. If NULL, then ignored.
Returns:
TRUE - The device path has more than one instance
FALSE - The device path is empty or contains only a single instance.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
CreateDeviceNodeProtocolInterface (
IN UINT8 NodeType,
IN UINT8 NodeSubType,
IN UINT16 NodeLength
)
/*++
Routine Description:
Creates a device node
Arguments:
NodeType - NodeType is the device node type (EFI_DEVICE_PATH.Type) for
the new device node.
NodeSubType - NodeSubType is the device node sub-type
EFI_DEVICE_PATH.SubType) for the new device node.
NodeLength - NodeLength is the length of the device node
(EFI_DEVICE_PATH.Length) for the new device node.
Returns:
Pointer - A pointer to the newly created device node.
NULL - NodeLength is less than
the size of the header or there was insufficient memory.
--*/
;
#endif

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#/** @file
# Component description file for Device Path Driver.
#
# This driver implement these three UEFI deveice path protocols (
# DevicePathUtilities, DevicePahtToText and DevicePathFromText) and install them.
# 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 = DevicePath
FILE_GUID = 9B680FCE-AD6B-4F3A-B60B-F59899003443
MODULE_TYPE = DXE_DRIVER
VERSION_STRING = 1.0
EDK_RELEASE_VERSION = 0x00090000
EFI_SPECIFICATION_VERSION = 0x00020000
ENTRY_POINT = DevicePathEntryPoint
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF EBC
#
################################################################################
#
# Sources Section - list of files that are required for the build to succeed.
#
################################################################################
[Sources.common]
DevicePathUtilities.c
DevicePathToText.c
DevicePathFromText.c
DevicePath.h
DevicePath.c
CommonHeader.h
################################################################################
#
# Package Dependency Section - list of Package files that are required for
# this module.
#
################################################################################
[Packages]
MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
################################################################################
#
# Library Class Section - list of Library Classes that are required for
# this module.
#
################################################################################
[LibraryClasses]
PcdLib
DevicePathLib
UefiBootServicesTableLib
MemoryAllocationLib
BaseMemoryLib
BaseLib
UefiDriverEntryPoint
PrintLib
DebugLib
################################################################################
#
# Guid C Name Section - list of Guids that this module uses or produces.
#
################################################################################
[Guids]
gEfiVTUTF8Guid # ALWAYS_CONSUMED
gEfiVT100Guid # ALWAYS_CONSUMED
gEfiVT100PlusGuid # ALWAYS_CONSUMED
gEfiPcAnsiGuid # ALWAYS_CONSUMED
################################################################################
#
# Protocol C Name Section - list of Protocol and Protocol Notify C Names
# that this module uses or produces.
#
################################################################################
[Protocols]
gEfiDevicePathToTextProtocolGuid # PROTOCOL ALWAYS_PRODUCED
gEfiDevicePathFromTextProtocolGuid # PROTOCOL ALWAYS_PRODUCED
gEfiDevicePathUtilitiesProtocolGuid # PROTOCOL ALWAYS_PRODUCED
gEfiDebugPortProtocolGuid # PROTOCOL ALWAYS_CONSUMED
################################################################################
#
# Pcd FEATURE_FLAG - list of PCDs that this module is coded for.
#
################################################################################
[PcdsFeatureFlag.common]
PcdDevicePathSupportDevicePathFromText|gEfiEdkModulePkgTokenSpaceGuid
PcdDevicePathSupportDevicePathToText|gEfiEdkModulePkgTokenSpaceGuid

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<?xml version="1.0" encoding="UTF-8"?>
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<MsaHeader>
<ModuleName>DevicePath</ModuleName>
<ModuleType>DXE_DRIVER</ModuleType>
<GuidValue>9B680FCE-AD6B-4F3A-B60B-F59899003443</GuidValue>
<Version>1.0</Version>
<Abstract>Component description file for Device Path Driver.</Abstract>
<Description>This driver implement these three UEFI deveice path protocols (
DevicePathUtilities, DevicePahtToText and DevicePathFromText) and install them.</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>DevicePath</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" RecommendedInstanceGuid="a86fbfca-0183-4eeb-aa8a-762e3b7da1f3">
<Keyword>PrintLib</Keyword>
<HelpText>Recommended libary Instance is BasePrintLib instance in MdePkg.</HelpText>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiDriverEntryPoint</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>
<LibraryClass Usage="ALWAYS_CONSUMED" RecommendedInstanceGuid="91c1677a-e57f-4191-8b8e-eb7711a716e0">
<Keyword>DevicePathLib</Keyword>
<HelpText>Recommended libary Instance is UefiDevicePathLib instance in MdePkg.</HelpText>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>PcdLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>DevicePath.c</Filename>
<Filename>DevicePath.h</Filename>
<Filename>DevicePathFromText.c</Filename>
<Filename>DevicePathToText.c</Filename>
<Filename>DevicePathUtilities.c</Filename>
</SourceFiles>
<PackageDependencies>
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Package PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d"/>
</PackageDependencies>
<Protocols>
<Protocol Usage="ALWAYS_CONSUMED">
<ProtocolCName>gEfiDebugPortProtocolGuid</ProtocolCName>
</Protocol>
<Protocol Usage="ALWAYS_PRODUCED">
<ProtocolCName>gEfiDevicePathUtilitiesProtocolGuid</ProtocolCName>
</Protocol>
<Protocol Usage="ALWAYS_PRODUCED">
<ProtocolCName>gEfiDevicePathFromTextProtocolGuid</ProtocolCName>
</Protocol>
<Protocol Usage="ALWAYS_PRODUCED">
<ProtocolCName>gEfiDevicePathToTextProtocolGuid</ProtocolCName>
</Protocol>
</Protocols>
<Guids>
<GuidCNames Usage="ALWAYS_CONSUMED">
<GuidCName>gEfiPcAnsiGuid</GuidCName>
</GuidCNames>
<GuidCNames Usage="ALWAYS_CONSUMED">
<GuidCName>gEfiVT100PlusGuid</GuidCName>
</GuidCNames>
<GuidCNames Usage="ALWAYS_CONSUMED">
<GuidCName>gEfiVT100Guid</GuidCName>
</GuidCNames>
<GuidCNames Usage="ALWAYS_CONSUMED">
<GuidCName>gEfiVTUTF8Guid</GuidCName>
</GuidCNames>
</Guids>
<Externs>
<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
<Specification>EDK_RELEASE_VERSION 0x00090000</Specification>
<Extern>
<ModuleEntryPoint>DevicePathEntryPoint</ModuleEntryPoint>
</Extern>
</Externs>
<PcdCoded>
<PcdEntry PcdItemType="FEATURE_FLAG" Usage="ALWAYS_PRODUCED">
<C_Name>PcdDevicePathSupportDevicePathToText</C_Name>
<TokenSpaceGuidCName>gEfiEdkModulePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DefaultValue>FALSE</DefaultValue>
<HelpText>If TRUE, then the Device Path To Text Protocol should be produced by the platform</HelpText>
</PcdEntry>
<PcdEntry PcdItemType="FEATURE_FLAG" Usage="ALWAYS_PRODUCED">
<C_Name>PcdDevicePathSupportDevicePathFromText</C_Name>
<TokenSpaceGuidCName>gEfiEdkModulePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DefaultValue>FALSE</DefaultValue>
<HelpText>If TRUE, then the Device Path From Text Protocol should be produced by the platform</HelpText>
</PcdEntry>
</PcdCoded>
</ModuleSurfaceArea>

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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:
DevicePathUtilities.c
Abstract:
Implementation file for Device Path Utilities Protocol
--*/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
#include "DevicePath.h"
UINTN
GetDevicePathSizeProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Returns the size of the device path, in bytes.
Arguments:
DevicePath - Points to the start of the EFI device path.
Returns:
Size - Size of the specified device path, in bytes, including the end-of-path tag.
--*/
{
return GetDevicePathSize (DevicePath);
}
EFI_DEVICE_PATH_PROTOCOL *
DuplicateDevicePathProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Create a duplicate of the specified path.
Arguments:
DevicePath - Points to the source EFI device path.
Returns:
Pointer - A pointer to the duplicate device path.
NULL - Insufficient memory.
--*/
{
return DuplicateDevicePath (DevicePath);
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePathProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src1,
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src2
)
/*++
Routine Description:
Create a new path by appending the second device path to the first.
Arguments:
Src1 - Points to the first device path. If NULL, then it is ignored.
Src2 - Points to the second device path. If NULL, then it is ignored.
Returns:
Pointer - A pointer to the newly created device path.
NULL - Memory could not be allocated
or either DevicePath or DeviceNode is NULL.
--*/
{
return AppendDevicePath (Src1, Src2);
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDeviceNodeProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode
)
/*++
Routine Description:
Creates a new path by appending the device node to the device path.
Arguments:
DevicePath - Points to the device path.
DeviceNode - Points to the device node.
Returns:
Pointer - A pointer to the allocated device node.
NULL - Memory could not be allocated
or either DevicePath or DeviceNode is NULL.
--*/
{
return AppendDevicePathNode (DevicePath, DeviceNode);
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePathInstanceProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance
)
/*++
Routine Description:
Creates a new path by appending the specified device path instance to the specified device path.
Arguments:
DevicePath - Points to the device path. If NULL, then ignored.
DevicePathInstance - Points to the device path instance.
Returns:
Pointer - A pointer to the newly created device path
NULL - Memory could not be allocated or DevicePathInstance is NULL.
--*/
{
return AppendDevicePathInstance (DevicePath, DevicePathInstance);
}
EFI_DEVICE_PATH_PROTOCOL *
GetNextDevicePathInstanceProtocolInterface (
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePathInstance,
OUT UINTN *DevicePathInstanceSize
)
/*++
Routine Description:
Creates a copy of the current device path instance and returns a pointer to the next device path instance.
Arguments:
DevicePathInstance - On input, this holds the pointer to the current device path
instance. On output, this holds the pointer to the next
device path instance or NULL if there are no more device
path instances in the device path.
DevicePathInstanceSize - On output, this holds the size of the device path instance,
in bytes or zero, if DevicePathInstance is zero.
Returns:
Pointer - A pointer to the copy of the current device path instance.
NULL - DevicePathInstace was NULL on entry or there was insufficient memory.
--*/
{
return GetNextDevicePathInstance (DevicePathInstance, DevicePathInstanceSize);
}
BOOLEAN
IsDevicePathMultiInstanceProtocolInterface (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Returns whether a device path is multi-instance.
Arguments:
DevicePath - Points to the device path. If NULL, then ignored.
Returns:
TRUE - The device path has more than one instance
FALSE - The device path is empty or contains only a single instance.
--*/
{
return IsDevicePathMultiInstance (DevicePath);
}
EFI_DEVICE_PATH_PROTOCOL *
CreateDeviceNodeProtocolInterface (
IN UINT8 NodeType,
IN UINT8 NodeSubType,
IN UINT16 NodeLength
)
/*++
Routine Description:
Creates a device node
Arguments:
NodeType - NodeType is the device node type (EFI_DEVICE_PATH.Type) for
the new device node.
NodeSubType - NodeSubType is the device node sub-type
EFI_DEVICE_PATH.SubType) for the new device node.
NodeLength - NodeLength is the length of the device node
(EFI_DEVICE_PATH.Length) for the new device node.
Returns:
Pointer - A pointer to the newly created device node.
NULL - NodeLength is less than
the size of the header or there was insufficient memory.
--*/
{
return CreateDeviceNode (NodeType, NodeSubType, NodeLength);
}