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[edk2] [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3 resume finished.

Eric Dong posted 3 patches 7 years, 2 months ago
There is a newer version of this series
[edk2] [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3 resume finished.
Posted by Eric Dong 7 years, 2 months ago 
Install EdkiiSmmEndOfS3ResumeProtocol when S3 resume finished.
S3ResumePei will send S3 resume finished event to SmmCore through
communication buffer.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
 MdeModulePkg/Core/PiSmmCore/PiSmmCore.c   | 55 +++++++++++++++++++++++++++----
 MdeModulePkg/Core/PiSmmCore/PiSmmCore.h   | 24 ++++++++++++++
 MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf |  1 +
 3 files changed, 73 insertions(+), 7 deletions(-)

diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
index 9e4390e..aa44933 100644
--- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
+++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
@@ -75,13 +75,14 @@ BOOLEAN  mInLegacyBoot = FALSE;
 // Table of SMI Handlers that are registered by the SMM Core when it is initialized
 //
 SMM_CORE_SMI_HANDLERS  mSmmCoreSmiHandlers[] = {
-  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,          NULL, TRUE  },
-  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid, NULL, TRUE }, 
-  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,           NULL, FALSE },
-  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,     NULL, FALSE },
-  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,          NULL, FALSE },
-  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,        NULL, TRUE },
-  { NULL,                       NULL,                               NULL, FALSE }
+  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,           NULL, TRUE  },
+  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid,  NULL, TRUE }, 
+  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,            NULL, FALSE },
+  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,      NULL, FALSE },
+  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,           NULL, FALSE },
+  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,         NULL, TRUE },
+  { SmmEndOfS3ResumeHandler,    &gEdkiiSmmEndOfS3ResumeProtocolGuid, NULL, FALSE },
+  { NULL,                       NULL,                                NULL, FALSE }
 };
 
 UINTN                           mFullSmramRangeCount;
@@ -383,6 +384,46 @@ SmmEndOfDxeHandler (
 }
 
 /**
+  Software SMI handler that is called when the EndOfS3Resume event is trigged.
+  This function installs the SMM EndOfS3Resume Protocol so SMM Drivers are informed that
+  S3 resume has finished.
+
+  @param  DispatchHandle  The unique handle assigned to this handler by SmiHandlerRegister().
+  @param  Context         Points to an optional handler context which was specified when the handler was registered.
+  @param  CommBuffer      A pointer to a collection of data in memory that will
+                          be conveyed from a non-SMM environment into an SMM environment.
+  @param  CommBufferSize  The size of the CommBuffer.
+
+  @return Status Code
+
+**/
+EFI_STATUS
+EFIAPI
+SmmEndOfS3ResumeHandler (
+  IN     EFI_HANDLE  DispatchHandle,
+  IN     CONST VOID  *Context,        OPTIONAL
+  IN OUT VOID        *CommBuffer,     OPTIONAL
+  IN OUT UINTN       *CommBufferSize  OPTIONAL
+  )
+{
+  EFI_STATUS  Status;
+  EFI_HANDLE  SmmHandle;
+
+  DEBUG ((EFI_D_INFO, "SmmEndOfS3ResumeHandler\n"));
+  //
+  // Install SMM EndOfDxe protocol
+  //
+  SmmHandle = NULL;
+  Status = SmmInstallProtocolInterface (
+             &SmmHandle,
+             &gEdkiiSmmEndOfS3ResumeProtocolGuid,
+             EFI_NATIVE_INTERFACE,
+             NULL
+             );
+  return Status;
+}
+
+/**
   Determine if two buffers overlap in memory.
 
   @param[in] Buff1  Pointer to first buffer
diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
index b6f815c..6cc824b 100644
--- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
+++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
@@ -32,6 +32,7 @@
 #include <Protocol/SmmExitBootServices.h>
 #include <Protocol/SmmLegacyBoot.h>
 #include <Protocol/SmmReadyToBoot.h>
+#include <Protocol/SmmEndOfS3Resume.h>
 
 #include <Guid/Apriori.h>
 #include <Guid/EventGroup.h>
@@ -802,6 +803,29 @@ SmmReadyToBootHandler (
   );
 
 /**
+  Software SMI handler that is called when the EndOfS3Resume event is trigged.
+  This function installs the SMM EndOfS3Resume Protocol so SMM Drivers are informed that
+  S3 resume has finished.
+
+  @param  DispatchHandle  The unique handle assigned to this handler by SmiHandlerRegister().
+  @param  Context         Points to an optional handler context which was specified when the handler was registered.
+  @param  CommBuffer      A pointer to a collection of data in memory that will
+                          be conveyed from a non-SMM environment into an SMM environment.
+  @param  CommBufferSize  The size of the CommBuffer.
+
+  @return Status Code
+
+**/
+EFI_STATUS
+EFIAPI
+SmmEndOfS3ResumeHandler (
+  IN     EFI_HANDLE  DispatchHandle,
+  IN     CONST VOID  *Context,        OPTIONAL
+  IN OUT VOID        *CommBuffer,     OPTIONAL
+  IN OUT UINTN       *CommBufferSize  OPTIONAL
+  );
+
+/**
   Place holder function until all the SMM System Table Service are available.
 
   @param  Arg1                   Undefined
diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
index 95e34bd..a724189 100644
--- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
+++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
@@ -79,6 +79,7 @@
   gEdkiiSmmExitBootServicesProtocolGuid         ## SOMETIMES_PRODUCES
   gEdkiiSmmLegacyBootProtocolGuid               ## SOMETIMES_PRODUCES
   gEdkiiSmmReadyToBootProtocolGuid              ## PRODUCES
+  gEdkiiSmmEndOfS3ResumeProtocolGuid            ## SOMETIMES_PRODUCES
 
   gEfiSmmSwDispatch2ProtocolGuid                ## SOMETIMES_CONSUMES
   gEfiSmmSxDispatch2ProtocolGuid                ## SOMETIMES_CONSUMES
-- 
2.7.0.windows.1

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Re: [edk2] [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3 resume finished.
Posted by Yao, Jiewen 7 years, 2 months ago 
I have a question for below:

> +  SmmHandle = NULL;
> +  Status = SmmInstallProtocolInterface (
> +             &SmmHandle,
> +             &gEdkiiSmmEndOfS3ResumeProtocolGuid,
> +             EFI_NATIVE_INTERFACE,
> +             NULL
> +             );

A platform may do S3 multiple times. What happen if the SmmInstallProtocolInterface() called twice?
Will the system has 2 handle and 2 protocol?

Thank you
Yao Jiewen

> -----Original Message-----
> From: Dong, Eric
> Sent: Wednesday, October 11, 2017 1:32 PM
> To: edk2-devel@lists.01.org
> Cc: Ni, Ruiyu <ruiyu.ni@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>
> Subject: [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3
> resume finished.
> 
> Install EdkiiSmmEndOfS3ResumeProtocol when S3 resume finished.
> S3ResumePei will send S3 resume finished event to SmmCore through
> communication buffer.
> 
> Cc: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Eric Dong <eric.dong@intel.com>
> ---
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.c   | 55
> +++++++++++++++++++++++++++----
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.h   | 24 ++++++++++++++
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf |  1 +
>  3 files changed, 73 insertions(+), 7 deletions(-)
> 
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> index 9e4390e..aa44933 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> @@ -75,13 +75,14 @@ BOOLEAN  mInLegacyBoot = FALSE;
>  // Table of SMI Handlers that are registered by the SMM Core when it is
> initialized
>  //
>  SMM_CORE_SMI_HANDLERS  mSmmCoreSmiHandlers[] = {
> -  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,
> NULL, TRUE  },
> -  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid,
> NULL, TRUE },
> -  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,
> NULL, FALSE },
> -  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,     NULL,
> FALSE },
> -  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,
> NULL, FALSE },
> -  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,
> NULL, TRUE },
> -  { NULL,                       NULL,
> NULL, FALSE }
> +  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,
> NULL, TRUE  },
> +  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid,
> NULL, TRUE },
> +  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,
> NULL, FALSE },
> +  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,      NULL,
> FALSE },
> +  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,
> NULL, FALSE },
> +  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,
> NULL, TRUE },
> +  { SmmEndOfS3ResumeHandler,
> &gEdkiiSmmEndOfS3ResumeProtocolGuid, NULL, FALSE },
> +  { NULL,                       NULL,
> NULL, FALSE }
>  };
> 
>  UINTN                           mFullSmramRangeCount;
> @@ -383,6 +384,46 @@ SmmEndOfDxeHandler (
>  }
> 
>  /**
> +  Software SMI handler that is called when the EndOfS3Resume event is
> trigged.
> +  This function installs the SMM EndOfS3Resume Protocol so SMM Drivers are
> informed that
> +  S3 resume has finished.
> +
> +  @param  DispatchHandle  The unique handle assigned to this handler by
> SmiHandlerRegister().
> +  @param  Context         Points to an optional handler context which was
> specified when the handler was registered.
> +  @param  CommBuffer      A pointer to a collection of data in memory
> that will
> +                          be conveyed from a non-SMM environment into
> an SMM environment.
> +  @param  CommBufferSize  The size of the CommBuffer.
> +
> +  @return Status Code
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +SmmEndOfS3ResumeHandler (
> +  IN     EFI_HANDLE  DispatchHandle,
> +  IN     CONST VOID  *Context,        OPTIONAL
> +  IN OUT VOID        *CommBuffer,     OPTIONAL
> +  IN OUT UINTN       *CommBufferSize  OPTIONAL
> +  )
> +{
> +  EFI_STATUS  Status;
> +  EFI_HANDLE  SmmHandle;
> +
> +  DEBUG ((EFI_D_INFO, "SmmEndOfS3ResumeHandler\n"));
> +  //
> +  // Install SMM EndOfDxe protocol
> +  //
> +  SmmHandle = NULL;
> +  Status = SmmInstallProtocolInterface (
> +             &SmmHandle,
> +             &gEdkiiSmmEndOfS3ResumeProtocolGuid,
> +             EFI_NATIVE_INTERFACE,
> +             NULL
> +             );
> +  return Status;
> +}
> +
> +/**
>    Determine if two buffers overlap in memory.
> 
>    @param[in] Buff1  Pointer to first buffer
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> index b6f815c..6cc824b 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> @@ -32,6 +32,7 @@
>  #include <Protocol/SmmExitBootServices.h>
>  #include <Protocol/SmmLegacyBoot.h>
>  #include <Protocol/SmmReadyToBoot.h>
> +#include <Protocol/SmmEndOfS3Resume.h>
> 
>  #include <Guid/Apriori.h>
>  #include <Guid/EventGroup.h>
> @@ -802,6 +803,29 @@ SmmReadyToBootHandler (
>    );
> 
>  /**
> +  Software SMI handler that is called when the EndOfS3Resume event is
> trigged.
> +  This function installs the SMM EndOfS3Resume Protocol so SMM Drivers are
> informed that
> +  S3 resume has finished.
> +
> +  @param  DispatchHandle  The unique handle assigned to this handler by
> SmiHandlerRegister().
> +  @param  Context         Points to an optional handler context which was
> specified when the handler was registered.
> +  @param  CommBuffer      A pointer to a collection of data in memory
> that will
> +                          be conveyed from a non-SMM environment into
> an SMM environment.
> +  @param  CommBufferSize  The size of the CommBuffer.
> +
> +  @return Status Code
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +SmmEndOfS3ResumeHandler (
> +  IN     EFI_HANDLE  DispatchHandle,
> +  IN     CONST VOID  *Context,        OPTIONAL
> +  IN OUT VOID        *CommBuffer,     OPTIONAL
> +  IN OUT UINTN       *CommBufferSize  OPTIONAL
> +  );
> +
> +/**
>    Place holder function until all the SMM System Table Service are available.
> 
>    @param  Arg1                   Undefined
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> index 95e34bd..a724189 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> @@ -79,6 +79,7 @@
>    gEdkiiSmmExitBootServicesProtocolGuid         ##
> SOMETIMES_PRODUCES
>    gEdkiiSmmLegacyBootProtocolGuid               ##
> SOMETIMES_PRODUCES
>    gEdkiiSmmReadyToBootProtocolGuid              ## PRODUCES
> +  gEdkiiSmmEndOfS3ResumeProtocolGuid            ##
> SOMETIMES_PRODUCES
> 
>    gEfiSmmSwDispatch2ProtocolGuid                ##
> SOMETIMES_CONSUMES
>    gEfiSmmSxDispatch2ProtocolGuid                ##
> SOMETIMES_CONSUMES
> --
> 2.7.0.windows.1

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Re: [edk2] [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3 resume finished.
Posted by Dong, Eric 7 years, 2 months ago 
Jiewen,

Yes, it will always install new protocol and may cause run out of memory. I have updated code to uninstall this protocol right after install it. please check the V3 patch which fix your two comments.

Thanks,
Eric

-----Original Message-----
From: Yao, Jiewen 
Sent: Wednesday, October 11, 2017 3:13 PM
To: Dong, Eric <eric.dong@intel.com>; edk2-devel@lists.01.org
Cc: Ni, Ruiyu <ruiyu.ni@intel.com>
Subject: RE: [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when S3 resume finished.

I have a question for below:

> +  SmmHandle = NULL;
> +  Status = SmmInstallProtocolInterface (
> +             &SmmHandle,
> +             &gEdkiiSmmEndOfS3ResumeProtocolGuid,
> +             EFI_NATIVE_INTERFACE,
> +             NULL
> +             );

A platform may do S3 multiple times. What happen if the SmmInstallProtocolInterface() called twice?
Will the system has 2 handle and 2 protocol?

Thank you
Yao Jiewen

> -----Original Message-----
> From: Dong, Eric
> Sent: Wednesday, October 11, 2017 1:32 PM
> To: edk2-devel@lists.01.org
> Cc: Ni, Ruiyu <ruiyu.ni@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>
> Subject: [Patch v2 3/3] MdeModulePkg/PiSmmCore: Install Protocol when 
> S3 resume finished.
> 
> Install EdkiiSmmEndOfS3ResumeProtocol when S3 resume finished.
> S3ResumePei will send S3 resume finished event to SmmCore through 
> communication buffer.
> 
> Cc: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Eric Dong <eric.dong@intel.com>
> ---
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.c   | 55
> +++++++++++++++++++++++++++----
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.h   | 24 ++++++++++++++
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf |  1 +
>  3 files changed, 73 insertions(+), 7 deletions(-)
> 
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> index 9e4390e..aa44933 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> @@ -75,13 +75,14 @@ BOOLEAN  mInLegacyBoot = FALSE;  // Table of SMI 
> Handlers that are registered by the SMM Core when it is initialized  
> //  SMM_CORE_SMI_HANDLERS  mSmmCoreSmiHandlers[] = {
> -  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,
> NULL, TRUE  },
> -  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid,
> NULL, TRUE },
> -  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,
> NULL, FALSE },
> -  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,     NULL,
> FALSE },
> -  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,
> NULL, FALSE },
> -  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,
> NULL, TRUE },
> -  { NULL,                       NULL,
> NULL, FALSE }
> +  { SmmDriverDispatchHandler,   &gEfiEventDxeDispatchGuid,
> NULL, TRUE  },
> +  { SmmReadyToLockHandler,      &gEfiDxeSmmReadyToLockProtocolGuid,
> NULL, TRUE },
> +  { SmmLegacyBootHandler,       &gEfiEventLegacyBootGuid,
> NULL, FALSE },
> +  { SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid,      NULL,
> FALSE },
> +  { SmmReadyToBootHandler,      &gEfiEventReadyToBootGuid,
> NULL, FALSE },
> +  { SmmEndOfDxeHandler,         &gEfiEndOfDxeEventGroupGuid,
> NULL, TRUE },
> +  { SmmEndOfS3ResumeHandler,
> &gEdkiiSmmEndOfS3ResumeProtocolGuid, NULL, FALSE },
> +  { NULL,                       NULL,
> NULL, FALSE }
>  };
> 
>  UINTN                           mFullSmramRangeCount;
> @@ -383,6 +384,46 @@ SmmEndOfDxeHandler (  }
> 
>  /**
> +  Software SMI handler that is called when the EndOfS3Resume event is
> trigged.
> +  This function installs the SMM EndOfS3Resume Protocol so SMM 
> + Drivers are
> informed that
> +  S3 resume has finished.
> +
> +  @param  DispatchHandle  The unique handle assigned to this handler 
> + by
> SmiHandlerRegister().
> +  @param  Context         Points to an optional handler context which was
> specified when the handler was registered.
> +  @param  CommBuffer      A pointer to a collection of data in memory
> that will
> +                          be conveyed from a non-SMM environment into
> an SMM environment.
> +  @param  CommBufferSize  The size of the CommBuffer.
> +
> +  @return Status Code
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +SmmEndOfS3ResumeHandler (
> +  IN     EFI_HANDLE  DispatchHandle,
> +  IN     CONST VOID  *Context,        OPTIONAL
> +  IN OUT VOID        *CommBuffer,     OPTIONAL
> +  IN OUT UINTN       *CommBufferSize  OPTIONAL
> +  )
> +{
> +  EFI_STATUS  Status;
> +  EFI_HANDLE  SmmHandle;
> +
> +  DEBUG ((EFI_D_INFO, "SmmEndOfS3ResumeHandler\n"));
> +  //
> +  // Install SMM EndOfDxe protocol
> +  //
> +  SmmHandle = NULL;
> +  Status = SmmInstallProtocolInterface (
> +             &SmmHandle,
> +             &gEdkiiSmmEndOfS3ResumeProtocolGuid,
> +             EFI_NATIVE_INTERFACE,
> +             NULL
> +             );
> +  return Status;
> +}
> +
> +/**
>    Determine if two buffers overlap in memory.
> 
>    @param[in] Buff1  Pointer to first buffer diff --git 
> a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> index b6f815c..6cc824b 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
> @@ -32,6 +32,7 @@
>  #include <Protocol/SmmExitBootServices.h>  #include 
> <Protocol/SmmLegacyBoot.h>  #include <Protocol/SmmReadyToBoot.h>
> +#include <Protocol/SmmEndOfS3Resume.h>
> 
>  #include <Guid/Apriori.h>
>  #include <Guid/EventGroup.h>
> @@ -802,6 +803,29 @@ SmmReadyToBootHandler (
>    );
> 
>  /**
> +  Software SMI handler that is called when the EndOfS3Resume event is
> trigged.
> +  This function installs the SMM EndOfS3Resume Protocol so SMM 
> + Drivers are
> informed that
> +  S3 resume has finished.
> +
> +  @param  DispatchHandle  The unique handle assigned to this handler 
> + by
> SmiHandlerRegister().
> +  @param  Context         Points to an optional handler context which was
> specified when the handler was registered.
> +  @param  CommBuffer      A pointer to a collection of data in memory
> that will
> +                          be conveyed from a non-SMM environment into
> an SMM environment.
> +  @param  CommBufferSize  The size of the CommBuffer.
> +
> +  @return Status Code
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +SmmEndOfS3ResumeHandler (
> +  IN     EFI_HANDLE  DispatchHandle,
> +  IN     CONST VOID  *Context,        OPTIONAL
> +  IN OUT VOID        *CommBuffer,     OPTIONAL
> +  IN OUT UINTN       *CommBufferSize  OPTIONAL
> +  );
> +
> +/**
>    Place holder function until all the SMM System Table Service are available.
> 
>    @param  Arg1                   Undefined
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> index 95e34bd..a724189 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
> @@ -79,6 +79,7 @@
>    gEdkiiSmmExitBootServicesProtocolGuid         ##
> SOMETIMES_PRODUCES
>    gEdkiiSmmLegacyBootProtocolGuid               ##
> SOMETIMES_PRODUCES
>    gEdkiiSmmReadyToBootProtocolGuid              ## PRODUCES
> +  gEdkiiSmmEndOfS3ResumeProtocolGuid            ##
> SOMETIMES_PRODUCES
> 
>    gEfiSmmSwDispatch2ProtocolGuid                ##
> SOMETIMES_CONSUMES
>    gEfiSmmSxDispatch2ProtocolGuid                ##
> SOMETIMES_CONSUMES
> --
> 2.7.0.windows.1

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