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Add DevicePathUtilities DevicePathToText DevciePathFromText USB2HostController protocols

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1037 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ljin6
2006-07-18 04:13:40 +00:00
parent 4b9fc76f7b
commit 562d28495d
30 changed files with 22444 additions and 1264 deletions
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107
EdkModulePkg/Universal/DevicePath/Dxe/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 <Uefi/UefiSpec.h>
#include <Protocol/DevicePath.h>
#include "DevicePath.h"
DEVICE_PATH_DRIVER_PRIVATE_DATA mPrivateData;
EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;
EFI_GUID mEfiDevicePathMessagingSASGuid = DEVICE_PATH_MESSAGING_SAS;
STATIC EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilitiesProtocol = {
GetDevicePathSize,
DuplicateDevicePath,
AppendDevicePath,
AppendDeviceNode,
AppendDevicePathInstance,
GetNextDevicePathInstance,
IsDevicePathMultiInstance,
CreateDeviceNode
};
STATIC EFI_DEVICE_PATH_TO_TEXT_PROTOCOL mDevicePathToTextProtocol = {
ConvertDeviceNodeToText,
ConvertDevicePathToText
};
STATIC EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromTextProtocol = {
ConvertTextToDeviceNode,
ConvertTextToDevicePath
};
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;
mPrivateData.Signature = DEVICE_PATH_DRIVER_SIGNATURE;
mPrivateData.DevicePathUtilities.GetDevicePathSize = GetDevicePathSize;
mPrivateData.DevicePathUtilities.DuplicateDevicePath = DuplicateDevicePath;
mPrivateData.DevicePathUtilities.AppendDevicePath = AppendDevicePath;
mPrivateData.DevicePathUtilities.AppendDeviceNode = AppendDeviceNode;
mPrivateData.DevicePathUtilities.AppendDevicePathInstance = AppendDevicePathInstance;
mPrivateData.DevicePathUtilities.GetNextDevicePathInstance = GetNextDevicePathInstance;
mPrivateData.DevicePathUtilities.IsDevicePathMultiInstance = IsDevicePathMultiInstance;
mPrivateData.DevicePathUtilities.CreateDeviceNode = CreateDeviceNode;
mPrivateData.DevicePathToText.ConvertDeviceNodeToText = ConvertDeviceNodeToText;
mPrivateData.DevicePathToText.ConvertDevicePathToText = ConvertDevicePathToText;
mPrivateData.DevicePathFromText.ConvertTextToDeviceNode = ConvertTextToDeviceNode;
mPrivateData.DevicePathFromText.ConvertTextToDevicePath = ConvertTextToDevicePath;
mPrivateData.Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&mPrivateData.Handle,
&gEfiDevicePathUtilitiesProtocolGuid,
&mPrivateData.DevicePathUtilities,
&gEfiDevicePathToTextProtocolGuid,
&mPrivateData.DevicePathToText,
&gEfiDevicePathFromTextProtocolGuid,
&mPrivateData.DevicePathFromText,
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:
DevicePathDriver.h
Abstract:
Definition for Device Path Utilities driver
--*/
#ifndef _DEVICE_PATH_DRIVER_H
#define _DEVICE_PATH_DRIVER_H
extern EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid;
extern EFI_GUID mEfiDevicePathMessagingSASGuid;
#define DEVICE_PATH_DRIVER_SIGNATURE EFI_SIGNATURE_32 ('D', 'P', 'D', 'V')
typedef struct {
UINT32 Signature;
EFI_HANDLE Handle;
//
// Produced protocols
//
EFI_DEVICE_PATH_UTILITIES_PROTOCOL DevicePathUtilities;
EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL DevicePathFromText;
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL DevicePathToText;
} DEVICE_PATH_DRIVER_PRIVATE_DATA;
#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
GetDevicePathSize (
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 *
DuplicateDevicePath (
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 *
AppendDevicePath (
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 *
AppendDeviceNode (
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 *
AppendDevicePathInstance (
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 *
GetNextDevicePathInstance (
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
IsDevicePathMultiInstance (
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 *
CreateDeviceNode (
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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<?xml version="1.0" encoding="UTF-8"?>
<!--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.-->
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0">
<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 is for DevicePathUtilities, DevicePahtToText and DevicePathFromText</Description>
<Copyright>Copyright (c) 2006, 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">
<Keyword>DebugLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>PrintLib</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>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="B6EC423C-21D2-490D-85C6-DD5864EAA674"/>
</PackageDependencies>
<Protocols>
<Protocol Usage="ALWAYS_CONSUMED">
<ProtocolCName>gEfiDebugPortProtocolGuid</ProtocolCName>
</Protocol>
<Protocol Usage="ALWAYS_CONSUMED">
<ProtocolCName>gEfiDevicePathProtocolGuid</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>
</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 <protocol/DevicePathUtilities.h>
#include <protocol/DevicePath.h>
#include "DevicePath.h"
UINTN
GetDevicePathSize (
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.
--*/
{
CONST EFI_DEVICE_PATH_PROTOCOL *Start;
if (DevicePath == NULL) {
return 0;
}
//
// Search for the end of the device path structure
//
Start = (EFI_DEVICE_PATH_PROTOCOL *) DevicePath;
while (!IsDevicePathEnd (DevicePath)) {
DevicePath = NextDevicePathNode (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);
}
EFI_DEVICE_PATH_PROTOCOL *
DuplicateDevicePath (
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 *NewDevicePath;
UINTN Size;
if (DevicePath == NULL) {
return NULL;
}
//
// Compute the size
//
Size = GetDevicePathSize (DevicePath);
if (Size == 0) {
return NULL;
}
//
// Allocate space for duplicate device path
//
NewDevicePath = AllocateCopyPool (Size, (VOID *) DevicePath);
return NewDevicePath;
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePath (
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.
--*/
{
UINTN Size;
UINTN Size1;
UINTN Size2;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath;
//
// If there's only 1 path, just duplicate it
//
if (Src1 == NULL) {
ASSERT (!IsDevicePathUnpacked (Src2));
return DuplicateDevicePath (Src2);
}
if (Src2 == NULL) {
ASSERT (!IsDevicePathUnpacked (Src1));
return DuplicateDevicePath (Src1);
}
//
// Allocate space for the combined device path. It only has one end node of
// length EFI_DEVICE_PATH_PROTOCOL
//
Size1 = GetDevicePathSize (Src1);
Size2 = GetDevicePathSize (Src2);
Size = Size1 + Size2 - sizeof (EFI_DEVICE_PATH_PROTOCOL);
NewDevicePath = AllocateCopyPool (Size, (VOID *) Src1);
if (NewDevicePath != NULL) {
//
// Over write Src1 EndNode and do the copy
//
SecondDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) ((CHAR8 *) NewDevicePath + (Size1 - sizeof (EFI_DEVICE_PATH_PROTOCOL)));
CopyMem (SecondDevicePath, (VOID *) Src2, Size2);
}
return NewDevicePath;
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDeviceNode (
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 *Temp;
EFI_DEVICE_PATH_PROTOCOL *NextNode;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
UINTN NodeLength;
if ((DevicePath == NULL) || (DeviceNode == NULL)) {
return NULL;
}
//
// Build a Node that has a terminator on it
//
NodeLength = DevicePathNodeLength (DeviceNode);
Temp = AllocateCopyPool (NodeLength + sizeof (EFI_DEVICE_PATH_PROTOCOL), (VOID *) DeviceNode);
if (Temp == NULL) {
return NULL;
}
//
// Add and end device path node to convert Node to device path
//
NextNode = NextDevicePathNode (Temp);
SetDevicePathEndNode (NextNode);
//
// Append device paths
//
NewDevicePath = AppendDevicePath (DevicePath, Temp);
gBS->FreePool (Temp);
return NewDevicePath;
}
EFI_DEVICE_PATH_PROTOCOL *
AppendDevicePathInstance (
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.
--*/
{
UINT8 *Ptr;
EFI_DEVICE_PATH_PROTOCOL *DevPath;
UINTN SrcSize;
UINTN InstanceSize;
if (DevicePathInstance == NULL) {
return NULL;
}
if (DevicePath == NULL) {
return DuplicateDevicePath (DevicePathInstance);
}
SrcSize = GetDevicePathSize (DevicePath);
InstanceSize = GetDevicePathSize (DevicePathInstance);
Ptr = AllocateCopyPool (SrcSize + InstanceSize, (VOID *) DevicePath);
if (Ptr != NULL) {
DevPath = (EFI_DEVICE_PATH_PROTOCOL *) (Ptr + (SrcSize - sizeof (EFI_DEVICE_PATH_PROTOCOL)));
//
// Convert the End to an End Instance, since we are
// appending another instacne after this one its a good
// idea.
//
DevPath->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE;
DevPath = NextDevicePathNode (DevPath);
CopyMem (DevPath, (VOID *) DevicePathInstance, InstanceSize);
}
return (EFI_DEVICE_PATH_PROTOCOL *) Ptr;
}
EFI_DEVICE_PATH_PROTOCOL *
GetNextDevicePathInstance (
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.
--*/
{
EFI_DEVICE_PATH_PROTOCOL *DevPath;
EFI_DEVICE_PATH_PROTOCOL *ReturnValue;
UINT8 Temp;
if (*DevicePathInstance == NULL) {
if (DevicePathInstanceSize != NULL) {
*DevicePathInstanceSize = 0;
}
return NULL;
}
//
// Find the end of the device path instance
//
DevPath = *DevicePathInstance;
while (!IsDevicePathEndType (DevPath)) {
DevPath = NextDevicePathNode (DevPath);
}
//
// Compute the size of the device path instance
//
if (DevicePathInstanceSize != NULL) {
*DevicePathInstanceSize = ((UINTN) DevPath - (UINTN) (*DevicePathInstance)) + 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 (*DevicePathInstance);
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) {
*DevicePathInstance = NULL;
} else {
*DevicePathInstance = NextDevicePathNode (DevPath);
}
return ReturnValue;
}
BOOLEAN
IsDevicePathMultiInstance (
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.
--*/
{
CONST EFI_DEVICE_PATH_PROTOCOL *Node;
if (DevicePath == NULL) {
return FALSE;
}
Node = DevicePath;
while (!IsDevicePathEnd (Node)) {
if (EfiIsDevicePathEndInstance (Node)) {
return TRUE;
}
Node = NextDevicePathNode (Node);
}
return FALSE;
}
EFI_DEVICE_PATH_PROTOCOL *
CreateDeviceNode (
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.
--*/
{
EFI_DEVICE_PATH_PROTOCOL *Node;
if (NodeLength < sizeof (EFI_DEVICE_PATH_PROTOCOL)) {
return NULL;
}
Node = (EFI_DEVICE_PATH_PROTOCOL *) AllocateZeroPool ((UINTN) NodeLength);
if (Node != NULL) {
Node->Type = NodeType;
Node->SubType = NodeSubType;
SetDevicePathNodeLength (Node, NodeLength);
}
return Node;
}