回复: [edk2-devel] [PATCH] MdePkg/UefiDevicePathLib: reback the DevicePathUtilitiesStandaloneMm

["gaoliming" <gaoliming@byosoft.com.cn>]

Yanbo:
  If this patch is temporarily added, you can handle it in your downstream code base.

  If you request to add DevicePathUtilitiesStandaloneMm for long term compatibility, this topic has been discussed in https://edk2.groups.io/g/devel/message/91799. 

Thanks
Liming
> -----邮件原件-----
> 发件人: Huang, Yanbo <yanbo.huang@intel.com>
> 发送时间: 2022年8月5日 13:34
> 收件人: Gao, Liming <gaoliming@byosoft.com.cn>; devel@edk2.groups.io
> 抄送: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Bi, Dandan <dandan.bi@intel.com>
> 主题: RE: [edk2-devel] [PATCH] MdePkg/UefiDevicePathLib: reback the
> DevicePathUtilitiesStandaloneMm
> 
> Hi Liming,
> 
> You mentioned patch rename the DevicePathUtilitiesStandaloneMm to
> UefiDevicePathLibBase, but there are some consumer in intel platform still
> use the DevicePathUtilitiesStandaloneMm, so downstream will failed in CI
> because it cannot find DevicePathUtilitiesStandaloneMm. So the
> DevicePathUtilitiesStandaloneMm and UefiDevicePathLibBase must exist at
> the same time for a period of time. After downstream finished and platform
> change to use UefiDevicePathLibBase, then
> DevicePathUtilitiesStandaloneMm can be deleted.
> 
> Best Regards,
> Yanbo Huang
> 
> -----Original Message-----
> From: gaoliming <gaoliming@byosoft.com.cn>
> Sent: Friday, August 5, 2022 11:16 AM
> To: devel@edk2.groups.io; Huang, Yanbo <yanbo.huang@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>
> Subject: 回复: [edk2-devel] [PATCH] MdePkg/UefiDevicePathLib: reback the
> DevicePathUtilitiesStandaloneMm
> 
> Yanbo:
>   Previous change has been reviewed and merged. Please see the detail
> https://edk2.groups.io/g/devel/message/91799
> 
> Thanks
> Liming
> > -----邮件原件-----
> > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Huang,
> Yanbo
> > 发送时间: 2022年8月5日 10:42
> > 收件人: devel@edk2.groups.io
> > 抄送: Yanbo Huang <yanbo.huang@intel.com>; Michael D Kinney
> > <michael.d.kinney@intel.com>; Liming Gao <gaoliming@byosoft.com.cn>;
> > Zhiguang Liu <zhiguang.liu@intel.com>
> > 主题: [edk2-devel] [PATCH] MdePkg/UefiDevicePathLib: reback the
> > DevicePathUtilitiesStandaloneMm
> >
> > From: Yanbo Huang <yanbo.huang@intel.com>
> >
> > reback the DevicePathUtilitiesStandaloneMm to unblock the downstream
> > sync
> >
> > Signed-off-by: Yanbo Huang <yanbo.huang@intel.com>
> > CC: Michael D Kinney <michael.d.kinney@intel.com>
> > CC: Liming Gao <gaoliming@byosoft.com.cn>
> > CC: Zhiguang Liu <zhiguang.liu@intel.com>
> >
> > ---
> >  .../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
> >
> >
> >
> > 
> >
> 
>