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Import some Pei and Dxe related instances for MdePkg.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2712 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2007-06-22 06:57:39 +00:00
parent b6460fcfd9
commit e386b444c8
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37
MdePkg/Library/UefiDevicePathLib/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) 2007 - 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/DevicePath.h>
//
// The Library classes this module consumes
//
#include <Library/DevicePathLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseLib.h>
#endif

529
MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.c Normal file
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/** @file
Device Path services. The thing to remember is device paths are built out of
nodes. The device path is terminated by an end node that is length
sizeof(EFI_DEVICE_PATH_PROTOCOL). That would be why there is sizeof(EFI_DEVICE_PATH_PROTOCOL)
all over this file.
The only place where multi-instance device paths are supported is in
environment varibles. Multi-instance device paths should never be placed
on a Handle.
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: UefiDevicePathLib.c
**/
//
// Include common header file for this module.
//
#include "CommonHeader.h"
/**
Returns the size of a device path in bytes.
This function returns the size, in bytes, of the device path data structure specified by
DevicePath including the end of device path node. If DevicePath is NULL, then 0 is returned.
@param DevicePath A pointer to a device path data structure.
@return The size of a device path in bytes.
**/
UINTN
EFIAPI
GetDevicePathSize (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
CONST EFI_DEVICE_PATH_PROTOCOL *Start;
if (DevicePath == NULL) {
return 0;
}
//
// Search for the end of the device path structure
//
Start = DevicePath;
while (!EfiIsDevicePathEnd (DevicePath)) {
DevicePath = EfiNextDevicePathNode (DevicePath);
}
//
// Compute the size and add back in the size of the end device path structure
//
return ((UINTN) DevicePath - (UINTN) Start) + sizeof (EFI_DEVICE_PATH_PROTOCOL);
}
/**
Creates a new device path by appending a second device path to a first device path.
This function allocates space for a new copy of the device path specified by DevicePath. If
DevicePath is NULL, then NULL is returned. If the memory is successfully allocated, then the
contents of DevicePath are copied to the newly allocated buffer, and a pointer to that buffer
is returned. Otherwise, NULL is returned.
@param DevicePath A pointer to a device path data structure.
@return A pointer to the duplicated device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
DuplicateDevicePath (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
UINTN Size;
//
// Compute the size
//
Size = GetDevicePathSize (DevicePath);
if (Size == 0) {
return NULL;
}
//
// Allocate space for duplicate device path
//
NewDevicePath = AllocateCopyPool (Size, DevicePath);
return NewDevicePath;
}
/**
Creates a new device path by appending a second device path to a first device path.
This function creates a new device path by appending a copy of SecondDevicePath to a copy of
FirstDevicePath in a newly allocated buffer. Only the end-of-device-path device node from
SecondDevicePath is retained. The newly created device path is returned.
If FirstDevicePath is NULL, then it is ignored, and a duplicate of SecondDevicePath is returned.
If SecondDevicePath is NULL, then it is ignored, and a duplicate of FirstDevicePath is returned.
If both FirstDevicePath and SecondDevicePath are NULL, then NULL is returned.
If there is not enough memory for the newly allocated buffer, then NULL is returned.
The memory for the new device path is allocated from EFI boot services memory. It is the
responsibility of the caller to free the memory allocated.
@param FirstDevicePath A pointer to a device path data structure.
@param SecondDevicePath A pointer to a device path data structure.
@return A pointer to the new device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
AppendDevicePath (
IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath, OPTIONAL
IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath OPTIONAL
)
{
UINTN Size;
UINTN Size1;
UINTN Size2;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *DevicePath2;
//
// If there's only 1 path, just duplicate it.
//
if (FirstDevicePath == NULL) {
return DuplicateDevicePath (SecondDevicePath);
}
if (SecondDevicePath == NULL) {
return DuplicateDevicePath (FirstDevicePath);
}
//
// Allocate space for the combined device path. It only has one end node of
// length EFI_DEVICE_PATH_PROTOCOL.
//
Size1 = GetDevicePathSize (FirstDevicePath);
Size2 = GetDevicePathSize (SecondDevicePath);
Size = Size1 + Size2 - sizeof (EFI_DEVICE_PATH_PROTOCOL);
NewDevicePath = AllocatePool (Size);
if (NewDevicePath != NULL) {
NewDevicePath = CopyMem (NewDevicePath, FirstDevicePath, Size1);
//
// Over write FirstDevicePath EndNode and do the copy
//
DevicePath2 = (EFI_DEVICE_PATH_PROTOCOL *) ((CHAR8 *) NewDevicePath +
(Size1 - sizeof (EFI_DEVICE_PATH_PROTOCOL)));
CopyMem (DevicePath2, SecondDevicePath, Size2);
}
return NewDevicePath;
}
/**
Creates a new path by appending the device node to the device path.
This function creates a new device path by appending a copy of the device node specified by
DevicePathNode to a copy of the device path specified by DevicePath in an allocated buffer.
The end-of-device-path device node is moved after the end of the appended device node.
If DevicePath is NULL, then NULL is returned.
If DevicePathNode is NULL, then NULL is returned.
If there is not enough memory to allocate space for the new device path, then NULL is returned.
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
free the memory allocated.
@param DevicePath A pointer to a device path data structure.
@param DevicePathNode A pointer to a single device path node.
@return A pointer to the new device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
AppendDevicePathNode (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathNode OPTIONAL
)
{
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
EFI_DEVICE_PATH_PROTOCOL *NextNode;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
UINTN NodeLength;
if (DevicePath == NULL || DevicePathNode == NULL) {
return NULL;
}
//
// Build a Node that has a terminator on it
//
NodeLength = DevicePathNodeLength (DevicePathNode);
TempDevicePath = AllocatePool (NodeLength + sizeof (EFI_DEVICE_PATH_PROTOCOL));
if (TempDevicePath == NULL) {
return NULL;
}
TempDevicePath = CopyMem (TempDevicePath, DevicePathNode, NodeLength);
//
// Add and end device path node to convert Node to device path
//
NextNode = NextDevicePathNode (TempDevicePath);
SetDevicePathEndNode (NextNode);
//
// Append device paths
//
NewDevicePath = AppendDevicePath (DevicePath, TempDevicePath);
FreePool (TempDevicePath);
return NewDevicePath;
}
/**
Creates a new device path by appending the specified device path instance to the specified device
path.
This function creates a new device path by appending a copy of the device path instance specified
by DevicePathInstance to a copy of the device path secified by DevicePath in a allocated buffer.
The end-of-device-path device node is moved after the end of the appended device path instance
and a new end-of-device-path-instance node is inserted between.
If DevicePath is NULL, then a copy if DevicePathInstance is returned.
If DevicePathInstance is NULL, then NULL is returned.
If there is not enough memory to allocate space for the new device path, then NULL is returned.
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
free the memory allocated.
@param DevicePath A pointer to a device path data structure.
@param DevicePathInstance A pointer to a device path instance.
@return A pointer to the new device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
AppendDevicePathInstance (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance OPTIONAL
)
{
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
UINTN SrcSize;
UINTN InstanceSize;
if (DevicePath == NULL) {
return DuplicateDevicePath (DevicePathInstance);
}
if (DevicePathInstance == NULL) {
return NULL;
}
SrcSize = GetDevicePathSize (DevicePath);
InstanceSize = GetDevicePathSize (DevicePathInstance);
NewDevicePath = AllocatePool (SrcSize + InstanceSize);
if (NewDevicePath != NULL) {
TempDevicePath = CopyMem (NewDevicePath, DevicePath, SrcSize);;
while (!IsDevicePathEnd (TempDevicePath)) {
TempDevicePath = NextDevicePathNode (TempDevicePath);
}
TempDevicePath->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE;
TempDevicePath = NextDevicePathNode (TempDevicePath);
CopyMem (TempDevicePath, DevicePathInstance, InstanceSize);
}
return NewDevicePath;
}
/**
Creates a copy of the current device path instance and returns a pointer to the next device path
instance.
This function creates a copy of the current device path instance. It also updates DevicePath to
point to the next device path instance in the device path (or NULL if no more) and updates Size
to hold the size of the device path instance copy.
If DevicePath is NULL, then NULL is returned.
If there is not enough memory to allocate space for the new device path, then NULL is returned.
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
free the memory allocated.
If Size is NULL, then ASSERT().
@param DevicePath 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 pointer to a device path data
structure.
@param Size On output, this holds the size of the device path instance, in
bytes or zero, if DevicePath is NULL.
@return A pointer to the current device path instance.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
GetNextDevicePathInstance (
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
OUT UINTN *Size
)
{
EFI_DEVICE_PATH_PROTOCOL *DevPath;
EFI_DEVICE_PATH_PROTOCOL *ReturnValue;
UINT8 Temp;
ASSERT (Size != NULL);
if (DevicePath == NULL || *DevicePath == NULL) {
*Size = 0;
return NULL;
}
//
// Find the end of the device path instance
//
DevPath = *DevicePath;
while (!IsDevicePathEndType (DevPath)) {
DevPath = NextDevicePathNode (DevPath);
}
//
// Compute the size of the device path instance
//
*Size = ((UINTN) DevPath - (UINTN) (*DevicePath)) + sizeof (EFI_DEVICE_PATH_PROTOCOL);
//
// Make a copy and return the device path instance
//
Temp = DevPath->SubType;
DevPath->SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE;
ReturnValue = DuplicateDevicePath (*DevicePath);
DevPath->SubType = Temp;
//
// If DevPath is the end of an entire device path, then another instance
// does not follow, so *DevicePath is set to NULL.
//
if (DevicePathSubType (DevPath) == END_ENTIRE_DEVICE_PATH_SUBTYPE) {
*DevicePath = NULL;
} else {
*DevicePath = NextDevicePathNode (DevPath);
}
return ReturnValue;
}
/**
Creates a copy of the current device path instance and returns a pointer to the next device path
instance.
This function creates a new device node in a newly allocated buffer of size NodeLength and
initializes the device path node header with NodeType and NodeSubType. The new device path node
is returned.
If NodeLength is smaller than a device path header, then NULL is returned.
If there is not enough memory to allocate space for the new device path, then NULL is returned.
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
free the memory allocated.
@param NodeType The device node type for the new device node.
@param NodeSubType The device node sub-type for the new device node.
@param NodeLength The length of the new device node.
@return The new device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
CreateDeviceNode (
IN UINT8 NodeType,
IN UINT8 NodeSubType,
IN UINT16 NodeLength
)
{
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
if (NodeLength < sizeof (EFI_DEVICE_PATH_PROTOCOL)) {
//
// NodeLength is less than the size of the header.
//
return NULL;
}
DevicePath = AllocatePool (NodeLength);
if (DevicePath != NULL) {
DevicePath->Type = NodeType;
DevicePath->SubType = NodeSubType;
SetDevicePathNodeLength (DevicePath, NodeLength);
}
return DevicePath;
}
/**
Determines if a device path is single or multi-instance.
This function returns TRUE if the device path specified by DevicePath is multi-instance.
Otherwise, FALSE is returned. If DevicePath is NULL, then FALSE is returned.
@param DevicePath A pointer to a device path data structure.
@retval TRUE DevicePath is multi-instance.
@retval FALSE DevicePath is not multi-instance or DevicePath is NULL.
**/
BOOLEAN
EFIAPI
IsDevicePathMultiInstance (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
CONST EFI_DEVICE_PATH_PROTOCOL *Node;
if (DevicePath == NULL) {
return FALSE;
}
Node = DevicePath;
while (!EfiIsDevicePathEnd (Node)) {
if (EfiIsDevicePathEndInstance (Node)) {
return TRUE;
}
Node = EfiNextDevicePathNode (Node);
}
return FALSE;
}
/**
Retrieves the device path protocol from a handle.
This function returns the device path protocol from the handle specified by Handle. If Handle is
NULL or Handle does not contain a device path protocol, then NULL is returned.
@param Handle The handle from which to retrieve the device path protocol.
@return The device path protocol from the handle specified by Handle.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
DevicePathFromHandle (
IN EFI_HANDLE Handle
)
{
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_STATUS Status;
Status = gBS->HandleProtocol (
Handle,
&gEfiDevicePathProtocolGuid,
(VOID *) &DevicePath
);
if (EFI_ERROR (Status)) {
DevicePath = NULL;
}
return DevicePath;
}
/**
Allocates a device path for a file and appends it to an existing device path.
If Device is a valid device handle that contains a device path protocol, then a device path for
the file specified by FileName is allocated and appended to the device path associated with the
handle Device. The allocated device path is returned. If Device is NULL or Device is a handle
that does not support the device path protocol, then a device path containing a single device
path node for the file specified by FileName is allocated and returned.
If FileName is NULL, then ASSERT().
@param Device A pointer to a device handle. This parameter is optional and
may be NULL.
@param FileName A pointer to a Null-terminated Unicode string.
@return The allocated device path.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
FileDevicePath (
IN EFI_HANDLE Device, OPTIONAL
IN CONST CHAR16 *FileName
)
{
UINTN Size;
FILEPATH_DEVICE_PATH *FilePath;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *FileDevicePath;
DevicePath = NULL;
Size = StrSize (FileName);
FileDevicePath = AllocatePool (Size + SIZE_OF_FILEPATH_DEVICE_PATH + EFI_END_DEVICE_PATH_LENGTH);
if (FileDevicePath != NULL) {
FilePath = (FILEPATH_DEVICE_PATH *) FileDevicePath;
FilePath->Header.Type = MEDIA_DEVICE_PATH;
FilePath->Header.SubType = MEDIA_FILEPATH_DP;
CopyMem (&FilePath->PathName, FileName, Size);
SetDevicePathNodeLength (&FilePath->Header, Size + SIZE_OF_FILEPATH_DEVICE_PATH);
SetDevicePathEndNode (NextDevicePathNode (&FilePath->Header));
if (Device != NULL) {
DevicePath = DevicePathFromHandle (Device);
}
DevicePath = AppendDevicePath (DevicePath, FileDevicePath);
FreePool (FileDevicePath);
}
return DevicePath;
}

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MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf Normal file
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#/** @file
# Component description file for the entry point to a EFIDXE Drivers
#
# Library to abstract Framework extensions that conflict with UEFI 2.0 Specification
# Copyright (c) 2007 - 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 = UefiDevicePathLib
FILE_GUID = 91c1677a-e57f-4191-8b8e-eb7711a716e0
MODULE_TYPE = UEFI_DRIVER
VERSION_STRING = 1.0
LIBRARY_CLASS = DevicePathLib|DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
#
# 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]
UefiDevicePathLib.c
CommonHeader.h
################################################################################
#
# 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]
MdePkg/MdePkg.dec
################################################################################
#
# Library Class Section - list of Library Classes that are required for
# this module.
#
################################################################################
[LibraryClasses]
BaseLib
UefiBootServicesTableLib
MemoryAllocationLib
DebugLib
BaseMemoryLib
################################################################################
#
# Protocol C Name Section - list of Protocol and Protocol Notify C Names
# that this module uses or produces.
#
################################################################################
[Protocols]
gEfiDevicePathProtocolGuid # PROTOCOL ALWAYS_CONSUMED

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MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.msa Normal file
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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>UefiDevicePathLib</ModuleName>
<ModuleType>UEFI_DRIVER</ModuleType>
<GuidValue>91c1677a-e57f-4191-8b8e-eb7711a716e0</GuidValue>
<Version>1.0</Version>
<Abstract>Component description file for the entry point to a EFIDXE Drivers</Abstract>
<Description>Library to abstract Framework extensions that conflict with UEFI 2.0 Specification</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>UefiDevicePathLib</OutputFileBasename>
</ModuleDefinitions>
<LibraryClassDefinitions>
<LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER">
<Keyword>DevicePathLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>BaseMemoryLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>DebugLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>MemoryAllocationLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiBootServicesTableLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>BaseLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>UefiDevicePathLib.c</Filename>
</SourceFiles>
<PackageDependencies>
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
</PackageDependencies>
<Protocols>
<Protocol Usage="ALWAYS_CONSUMED">
<ProtocolCName>gEfiDevicePathProtocolGuid</ProtocolCName>
</Protocol>
</Protocols>
<Externs>
<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
<Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
</Externs>
</ModuleSurfaceArea>