[edk2-devel] [PATCH v1] MdePkg: Support standalone MM Driver Unload capability
Wu, Jiaxin
jiaxin.wu at intel.com
Thu Mar 4 03:22:25 UTC 2021
Hi Liming,
We internal verified the new added unload logic, works well.
Thanks,
Jiaxin
> -----Original Message-----
> From: gaoliming <gaoliming at byosoft.com.cn>
> Sent: Thursday, March 4, 2021 10:21 AM
> To: devel at edk2.groups.io; Wu, Jiaxin <jiaxin.wu at intel.com>
> Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Liu, Zhiguang
> <zhiguang.liu at intel.com>; Fu, Siyuan <siyuan.fu at intel.com>
> Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support standalone MM
> Driver Unload capability
>
> Jiaxin:
> Have you created the test case to verify the new added unload logic?
>
> Thanks
> Liming
> > -----邮件原件-----
> > 发件人: devel at edk2.groups.io <devel at edk2.groups.io> 代表 Wu, Jiaxin
> > 发送时间: 2021年3月3日 16:49
> > 收件人: devel at edk2.groups.io; Wu, Jiaxin <jiaxin.wu at intel.com>
> > 抄送: Kinney, Michael D <michael.d.kinney at intel.com>; Liming Gao
> > <gaoliming at byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu at intel.com>; Fu,
> > Siyuan <siyuan.fu at intel.com>
> > 主题: Re: [edk2-devel] [PATCH v1] MdePkg: Support standalone MM
> Driver
> > Unload capability
> >
> > Hi Mike & Zhiguang & Liming,
> >
> > Could you help review this patch?
> >
> > Thanks,
> > Jiaxin
> >
> >
> >
> > > -----Original Message-----
> > > From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Wu,
> > > Jiaxin
> > > Sent: Monday, March 1, 2021 3:44 PM
> > > To: devel at edk2.groups.io
> > > Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Liming Gao
> > > <gaoliming at byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu at intel.com>;
> Fu,
> > > Siyuan <siyuan.fu at intel.com>
> > > Subject: [edk2-devel] [PATCH v1] MdePkg: Support standalone MM
> Driver
> > > Unload capability
> > >
> > > https://bugzilla.tianocore.org/show_bug.cgi?id=3240
> > >
> > > This patch is to support standalone MM Driver Unload capability
> > > by providing _DriverUnloadHandler() function.
> > >
> > > Change-Id: I26cdbfccb7052685c464d6394e472c7579b7b67e
> > > 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>
> > > Cc: Siyuan Fu <siyuan.fu at intel.com>
> > > Signed-off-by: Jiaxin Wu <Jiaxin.wu at intel.com>
> > > ---
> > > .../Include/Library/StandaloneMmDriverEntryPoint.h | 25 ++++++++++
> > > .../StandaloneMmDriverEntryPoint.c | 56
> > > +++++++++++++++++++++-
> > > .../StandaloneMmDriverEntryPoint.inf | 5 +-
> > > 3 files changed, 84 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/MdePkg/Include/Library/StandaloneMmDriverEntryPoint.h
> > > b/MdePkg/Include/Library/StandaloneMmDriverEntryPoint.h
> > > index 25b2d8d68d..12f7886640 100644
> > > --- a/MdePkg/Include/Library/StandaloneMmDriverEntryPoint.h
> > > +++ b/MdePkg/Include/Library/StandaloneMmDriverEntryPoint.h
> > > @@ -16,10 +16,15 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
> > > /// Declare the PI Specification Revision that this driver requires to
> > execute
> > > /// correctly.
> > > ///
> > > extern CONST UINT32 _gMmRevision;
> > >
> > > +///
> > > +/// Declare the number of unload handler in the image.
> > > +///
> > > +extern CONST UINT8 _gDriverUnloadImageCount;
> > > +
> > > /**
> > > The entry point of PE/COFF Image for a Standalone MM Driver.
> > >
> > > This function is the entry point for a Standalone MM Driver.
> > > This function must call ProcessLibraryConstructorList() and
> > > @@ -120,6 +125,26 @@ EFIAPI
> > > ProcessModuleEntryPointList (
> > > IN EFI_HANDLE ImageHandle,
> > > IN EFI_MM_SYSTEM_TABLE *MmSystemTable
> > > );
> > >
> > > +/**
> > > + Autogenerated function that calls a set of module unload handlers.
> > > +
> > > + This function must be called from the unload handler registered by
> > > _ModuleEntryPoint().
> > > + This function calls the set of module unload handlers.
> > > + This function is autogenerated by build tools and those build tools
> are
> > > responsible
> > > + for collecting the module unload handlers and calling them in a
> specified
> > > order.
> > > +
> > > + @param ImageHandle The image handle of the DXE Driver, DXE
> > Runtime
> > > Driver, DXE SMM Driver, or UEFI Driver.
> > > +
> > > + @retval EFI_SUCCESS The unload handlers executed normally.
> > > + @retval !EFI_SUCCESS The unload handlers failed to execute
> > normally.
> > > +
> > > +**/
> > > +EFI_STATUS
> > > +EFIAPI
> > > +ProcessModuleUnloadList (
> > > + IN EFI_HANDLE ImageHandle
> > > + );
> > > +
> > > #endif
> > > diff --git
> > >
> >
> a/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.c
> > >
> >
> b/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.c
> > > index 2c41e23a03..d74c9bdfed 100644
> > > ---
> > >
> >
> a/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.c
> > > +++
> > >
> >
> b/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.c
> > > @@ -1,23 +1,63 @@
> > > /** @file
> > > Entry point to a Standalone MM driver.
> > >
> > > -Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
> > > +Copyright (c) 2015 - 2021, Intel Corporation. All rights reserved.<BR>
> > > Copyright (c) 2016 - 2018, ARM Ltd. All rights reserved.<BR>
> > > Copyright (c) 2018, Linaro, Limited. All rights reserved.<BR>
> > >
> > > SPDX-License-Identifier: BSD-2-Clause-Patent
> > >
> > > **/
> > >
> > > #include <PiMm.h>
> > >
> > > +#include <Protocol/LoadedImage.h>
> > > #include <Library/BaseLib.h>
> > > #include <Library/DebugLib.h>
> > > #include <Library/MmServicesTableLib.h>
> > > #include <Library/StandaloneMmDriverEntryPoint.h>
> > >
> > > +/**
> > > + Unloads an image from memory.
> > > +
> > > + This function is a callback that a driver registers to do cleanup
> > > + when the UnloadImage boot service function is called.
> > > +
> > > + @param ImageHandle The handle to the image to unload.
> > > +
> > > + @return Status returned by all unload().
> > > +
> > > +**/
> > > +EFI_STATUS
> > > +EFIAPI
> > > +_DriverUnloadHandler (
> > > + EFI_HANDLE ImageHandle
> > > + )
> > > +{
> > > + EFI_STATUS Status;
> > > +
> > > + //
> > > + // If an UnloadImage() handler is specified, then call it
> > > + //
> > > + Status = ProcessModuleUnloadList (ImageHandle);
> > > +
> > > + //
> > > + // If the driver specific unload handler does not return an error,
> then call
> > all
> > > of the
> > > + // library destructors. If the unload handler returned an error,
> then the
> > > driver can not be
> > > + // unloaded, and the library destructors should not be called
> > > + //
> > > + if (!EFI_ERROR (Status)) {
> > > + ProcessLibraryDestructorList (ImageHandle, gMmst);
> > > + }
> > > +
> > > + //
> > > + // Return the status from the driver specific unload handler
> > > + //
> > > + return Status;
> > > +}
> > > +
> > > /**
> > > The entry point of PE/COFF Image for a Standalone MM Driver.
> > >
> > > This function is the entry point for a Standalone MM Driver.
> > > This function must call ProcessLibraryConstructorList() and
> > > @@ -44,10 +84,11 @@ _ModuleEntryPoint (
> > > IN EFI_HANDLE ImageHandle,
> > > IN IN EFI_MM_SYSTEM_TABLE *MmSystemTable
> > > )
> > > {
> > > EFI_STATUS Status;
> > > + EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
> > >
> > > if (_gMmRevision != 0) {
> > > //
> > > // Make sure that the MM spec revision of the platform
> > > // is >= MM spec revision of the driver
> > > @@ -60,10 +101,23 @@ _ModuleEntryPoint (
> > > //
> > > // Call constructor for all libraries
> > > //
> > > ProcessLibraryConstructorList (ImageHandle, MmSystemTable);
> > >
> > > + //
> > > + // Install unload handler...
> > > + //
> > > + if (_gDriverUnloadImageCount != 0) {
> > > + Status = gMmst->MmHandleProtocol (
> > > + ImageHandle,
> > > + &gEfiLoadedImageProtocolGuid,
> > > + (VOID **)&LoadedImage
> > > + );
> > > + ASSERT_EFI_ERROR (Status);
> > > + LoadedImage->Unload = _DriverUnloadHandler;
> > > + }
> > > +
> > > //
> > > // Call the driver entry point
> > > //
> > > Status = ProcessModuleEntryPointList (ImageHandle, MmSystemTable);
> > >
> > > diff --git
> > >
> >
> a/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.inf
> > >
> >
> b/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.inf
> > > index 2f33a6d4ad..9303566309 100644
> > > ---
> > >
> >
> a/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.inf
> > > +++
> > >
> >
> b/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEnt
> > > ryPoint.inf
> > > @@ -1,9 +1,9 @@
> > > ## @file
> > > # Module entry point library for Standalone MM driver.
> > > #
> > > -# Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
> > > +# Copyright (c) 2015 - 2021, Intel Corporation. All rights
> reserved.<BR>
> > > # Copyright (c) 2016-2018, ARM Ltd. All rights reserved.<BR>
> > > # Copyright (c) 2018, Linaro, Limited. All rights reserved.<BR>
> > > #
> > > # SPDX-License-Identifier: BSD-2-Clause-Patent
> > > #
> > > @@ -34,5 +34,8 @@
> > >
> > > [LibraryClasses]
> > > BaseLib
> > > DebugLib
> > > MmServicesTableLib
> > > +
> > > +[Protocols]
> > > + gEfiLoadedImageProtocolGuid ## SOMETIMES_CONSUMES
> > > --
> > > 2.16.2.windows.1
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
>
>
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