diff options
| author | xgu3 <xgu3@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-05 07:05:28 +0000 |
|---|---|---|
| committer | xgu3 <xgu3@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-05 07:05:28 +0000 |
| commit | 95276127e373f2e2fb2a208ff77267422a197d9f (patch) | |
| tree | 44e70c799deb743571f752bf72b0b69078e27457 /MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c | |
| parent | 8a7f0c4c6b814fe50a18ed0c96e3d871e98bd224 (diff) | |
| download | edk2-platforms-95276127e373f2e2fb2a208ff77267422a197d9f.tar.xz | |
Check in following modules,
DxeIpl
ConPlatform
ConSplitter
GraphicsConsole
Terminal
DevicePath
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3069 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c')
| -rw-r--r-- | MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c b/MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c new file mode 100644 index 0000000000..a78a24d9f5 --- /dev/null +++ b/MdeModulePkg/Universal/DevicePathDxe/DevicePathUtilities.c @@ -0,0 +1,216 @@ +/*++
+
+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);
+}
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