[PATCH] MdePkg/UefiDevicePathLib: reback the DevicePathUtilitiesStandaloneMm


First Last <first.last@...>
 

From: Yanbo Huang <yanbo.huang@...>

reback the DevicePathUtilitiesStandaloneMm to unblock the downstream sync

Signed-off-by: Yanbo Huang <yanbo.huang@...>
CC: Michael D Kinney <michael.d.kinney@...>
CC: Liming Gao <gaoliming@...>
CC: Zhiguang Liu <zhiguang.liu@...>

---
.../DevicePathUtilitiesStandaloneMm.c | 39 ++++++++++
.../UefiDevicePathLibStandaloneMm.inf | 75 +++++++++++++++++++
2 files changed, 114 insertions(+)
create mode 100644 MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c
create mode 100644 MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf

diff --git a/MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c b/MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c
new file mode 100644
index 0000000000..096f835b90
--- /dev/null
+++ b/MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c
@@ -0,0 +1,39 @@
+/** @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 - 2018, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) Microsoft Corporation.
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "UefiDevicePathLib.h"
+
+/**
+ 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
+ )
+{
+ return NULL;
+}
diff --git a/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf b/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
new file mode 100644
index 0000000000..23fedf38b7
--- /dev/null
+++ b/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
@@ -0,0 +1,75 @@
+## @file
+# Instance of Device Path Library based on Memory Allocation Library.
+#
+# Device Path Library that layers on top of the Memory Allocation Library.
+#
+# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) Microsoft Corporation.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = UefiDevicePathLib
+ MODULE_UNI_FILE = UefiDevicePathLib.uni
+ FILE_GUID = D8E58437-44D3-4154-B7A7-EB794923EF12
+ MODULE_TYPE = MM_STANDALONE
+ PI_SPECIFICATION_VERSION = 0x00010032
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = DevicePathLib | MM_STANDALONE MM_CORE_STANDALONE
+
+
+#
+# VALID_ARCHITECTURES = IA32 X64 EBC
+#
+
+[Sources]
+ DevicePathUtilities.c
+ DevicePathUtilitiesStandaloneMm.c
+ DevicePathToText.c
+ DevicePathFromText.c
+ UefiDevicePathLib.c
+ UefiDevicePathLib.h
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ MemoryAllocationLib
+ DebugLib
+ BaseMemoryLib
+ PcdLib
+ PrintLib
+
+[Guids]
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiVTUTF8Guid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiVT100Guid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiVT100PlusGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiPcAnsiGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiUartDevicePathGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiSasDevicePathGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiVirtualDiskGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiVirtualCdGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiPersistentVirtualDiskGuid
+ ## SOMETIMES_CONSUMES ## GUID
+ gEfiPersistentVirtualCdGuid
+
+[Protocols]
+ gEfiDevicePathProtocolGuid ## SOMETIMES_CONSUMES
+ gEfiDebugPortProtocolGuid ## UNDEFINED
+
+[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdMaximumDevicePathNodeCount ## SOMETIMES_CONSUMES
--
2.31.1.windows.1

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