[edk2-devel] [PATCHv3 1/1] MdePkg/UefiDevicePathLib: Add support for PEIMs

Michael D Kinney michael.d.kinney at intel.com
Thu Jul 7 22:05:32 UTC 2022


Hi Liming,

I think the current Mm specific INF is actually compatible with all module types.

Why not add a Base version that can be used by any module?

Using Peim in name implies it is only compatible with PEIMs which is not true.

For the compatibility question, I would like to see feedback from Mm maintainers
to see if they would accept a library name change to a more general purpose
Base INF.

Mike

> -----Original Message-----
> From: gaoliming <gaoliming at byosoft.com.cn>
> Sent: Wednesday, July 6, 2022 6:37 PM
> To: Albecki, Mateusz <mateusz.albecki at intel.com>; devel at edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Liu, Zhiguang <zhiguang.liu at intel.com>
> Subject: 回复: [PATCHv3 1/1] MdePkg/UefiDevicePathLib: Add support for PEIMs
> 
> Mateusz:
>   To be compatible, I suggest to add one new UefiDevicePathLibPeim.inf for
> PEIM module. It will be same to UefiDevicePathLibStandaloneMm.inf except for
> module type and base name.
> 
>   The source file rename is the compatible change. It can be made.
> 
> Thanks
> Liming
> > -----邮件原件-----
> > 发件人: Mateusz Albecki <mateusz.albecki at intel.com>
> > 发送时间: 2022年7月1日 22:12
> > 收件人: devel at edk2.groups.io
> > 抄送: Mateusz Albecki <mateusz.albecki at intel.com>; Michael D Kinney
> > <michael.d.kinney at intel.com>; Liming Gao <gaoliming at byosoft.com.cn>;
> > Zhiguang Liu <zhiguang.liu at intel.com>
> > 主题: [PATCHv3 1/1] MdePkg/UefiDevicePathLib: Add support for PEIMs
> >
> > DevicePathLib utilities are useful in PEI to locate the devices which need
> > an opal unlock on S3 resume. This commit reuses the implementation done
> > for standalone MM support and makes the StandaloneMm library Base.
> >
> > Signed-off-by: Mateusz Albecki <mateusz.albecki at intel.com>
> >
> > Cc: Michael D Kinney <michael.d.kinney at intel.com>
> > Cc: Liming Gao <gaoliming at byosoft.com.cn>
> > Cc: Zhiguang Liu <zhiguang.liu at intel.com>
> >
> > ---
> >  ...athUtilitiesStandaloneMm.c => DevicePathUtilitiesBase.c} | 0
> >  ...icePathLibStandaloneMm.inf => UefiDevicePathLibBase.inf} | 6 +++---
> >  MdePkg/MdePkg.dsc                                           |
> > 2 +-
> >  3 files changed, 4 insertions(+), 4 deletions(-)
> >  rename
> > MdePkg/Library/UefiDevicePathLib/{DevicePathUtilitiesStandaloneMm.c =>
> > DevicePathUtilitiesBase.c} (100%)
> >  rename
> > MdePkg/Library/UefiDevicePathLib/{UefiDevicePathLibStandaloneMm.inf =>
> > UefiDevicePathLibBase.inf} (87%)
> >
> > diff --git
> > a/MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c
> > b/MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesBase.c
> > similarity index 100%
> > rename from
> > MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesStandaloneMm.c
> > rename to MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesBase.c
> > diff --git
> > a/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
> > b/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibBase.inf
> > similarity index 87%
> > rename from
> > MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
> > rename to MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibBase.inf
> > index 23fedf38b7..323043033f 100644
> > ---
> > a/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
> > +++ b/MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibBase.inf
> > @@ -16,10 +16,10 @@
> >    BASE_NAME                      = UefiDevicePathLib
> >    MODULE_UNI_FILE                = UefiDevicePathLib.uni
> >    FILE_GUID                      =
> > D8E58437-44D3-4154-B7A7-EB794923EF12
> > -  MODULE_TYPE                    = MM_STANDALONE
> > +  MODULE_TYPE                    = BASE
> >    PI_SPECIFICATION_VERSION       = 0x00010032
> >    VERSION_STRING                 = 1.0
> > -  LIBRARY_CLASS                  = DevicePathLib |
> > MM_STANDALONE MM_CORE_STANDALONE
> > +  LIBRARY_CLASS                  = DevicePathLib
> >
> >
> >  #
> > @@ -28,7 +28,7 @@
> >
> >  [Sources]
> >    DevicePathUtilities.c
> > -  DevicePathUtilitiesStandaloneMm.c
> > +  DevicePathUtilitiesBase.c
> >    DevicePathToText.c
> >    DevicePathFromText.c
> >    UefiDevicePathLib.c
> > diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
> > index 3d8874e647..9daee93523 100644
> > --- a/MdePkg/MdePkg.dsc
> > +++ b/MdePkg/MdePkg.dsc
> > @@ -111,7 +111,7 @@
> >
> > MdePkg/Library/UefiDebugLibDebugPortProtocol/UefiDebugLibDebugPortPro
> > tocol.inf
> >    MdePkg/Library/UefiDebugLibStdErr/UefiDebugLibStdErr.inf
> >    MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
> > -  MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibStandaloneMm.inf
> > +  MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibBase.inf
> >
> > MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibOptionalDevicePathPro
> > tocol.inf
> >
> > MdePkg/Library/UefiDevicePathLibDevicePathProtocol/UefiDevicePathLibDe
> > vicePathProtocol.inf
> >    MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
> > --
> > 2.28.0.windows.1
> >
> > ---------------------------------------------------------------------
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