[PATCH 08/10] StandaloneMmPkg/Core: drop support for dispatching FVs into MM

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

Remove the support that permits calls into the MM context to dispatch
firmware volumes that are not part of the initial standalone MM firmware
volume.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 StandaloneMmPkg/Core/StandaloneMmCore.h | 22 ----------
 StandaloneMmPkg/Core/Dispatcher.c       | 46 --------------------
 StandaloneMmPkg/Core/StandaloneMmCore.c |  1 -
 3 files changed, 69 deletions(-)

diff --git a/StandaloneMmPkg/Core/StandaloneMmCore.h b/StandaloneMmPkg/Core/StandaloneMmCore.h
index 0d20bcaa6be5..74338dc9da0d 100644
--- a/StandaloneMmPkg/Core/StandaloneMmCore.h
+++ b/StandaloneMmPkg/Core/StandaloneMmCore.h
@@ -635,28 +635,6 @@ MmDriverDispatchHandler (
 
   @return Status Code
 
-**/
-EFI_STATUS
-EFIAPI
-MmFvDispatchHandler (
-  IN     EFI_HANDLE               DispatchHandle,
-  IN     CONST VOID               *Context,        OPTIONAL
-  IN OUT VOID                     *CommBuffer,     OPTIONAL
-  IN OUT UINTN                    *CommBufferSize  OPTIONAL
-  );
-
-/**
-  This function is the main entry point for an MM handler dispatch
-  or communicate-based callback.
-
-  @param  DispatchHandle  The unique handle assigned to this handler by MmiHandlerRegister().
-  @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-MM environment into an MM environment.
-  @param  CommBufferSize  The size of the CommBuffer.
-
-  @return Status Code
-
 **/
 EFI_STATUS
 EFIAPI
diff --git a/StandaloneMmPkg/Core/Dispatcher.c b/StandaloneMmPkg/Core/Dispatcher.c
index bede4832cfb7..4b2f38f700a0 100644
--- a/StandaloneMmPkg/Core/Dispatcher.c
+++ b/StandaloneMmPkg/Core/Dispatcher.c
@@ -883,52 +883,6 @@ MmAddToDriverList (
   return EFI_SUCCESS;
 }
 
-/**
-  This function is the main entry point for an MM handler dispatch
-  or communicate-based callback.
-
-  @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-MM environment into an MM environment.
-  @param  CommBufferSize  The size of the CommBuffer.
-
-  @return Status Code
-
-**/
-EFI_STATUS
-EFIAPI
-MmFvDispatchHandler (
-  IN     EFI_HANDLE               DispatchHandle,
-  IN     CONST VOID               *Context,        OPTIONAL
-  IN OUT VOID                     *CommBuffer,     OPTIONAL
-  IN OUT UINTN                    *CommBufferSize  OPTIONAL
-  )
-{
-  EFI_STATUS                            Status;
-  EFI_MM_COMMUNICATE_FV_DISPATCH_DATA  *CommunicationFvDispatchData;
-  EFI_FIRMWARE_VOLUME_HEADER            *FwVolHeader;
-
-  DEBUG ((DEBUG_INFO, "MmFvDispatchHandler\n"));
-
-  CommunicationFvDispatchData = CommBuffer;
-
-  DEBUG ((DEBUG_INFO, "  Dispatch - 0x%016lx - 0x%016lx\n", CommunicationFvDispatchData->Address,
-          CommunicationFvDispatchData->Size));
-
-  FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)CommunicationFvDispatchData->Address;
-
-  MmCoreFfsFindMmDriver (FwVolHeader);
-
-  //
-  // Execute the MM Dispatcher on any newly discovered FVs and previously
-  // discovered MM drivers that have been discovered but not dispatched.
-  //
-  Status = MmDispatcher ();
-
-  return Status;
-}
-
 /**
   Traverse the discovered list for any drivers that were discovered but not loaded
   because the dependency experessions evaluated to false.
diff --git a/StandaloneMmPkg/Core/StandaloneMmCore.c b/StandaloneMmPkg/Core/StandaloneMmCore.c
index ec53b8d8bec4..766cdb5c848c 100644
--- a/StandaloneMmPkg/Core/StandaloneMmCore.c
+++ b/StandaloneMmPkg/Core/StandaloneMmCore.c
@@ -99,7 +99,6 @@ BOOLEAN  mInLegacyBoot = FALSE;
 // Table of MMI Handlers that are registered by the MM Core when it is initialized
 //
 MM_CORE_MMI_HANDLERS  mMmCoreMmiHandlers[] = {
-  { MmFvDispatchHandler,     &gMmFvDispatchGuid,                 NULL, TRUE  },
   { MmReadyToLockHandler,    &gEfiDxeMmReadyToLockProtocolGuid,  NULL, TRUE  },
   { MmEndOfDxeHandler,       &gEfiEndOfDxeEventGroupGuid,        NULL, FALSE },
   { MmLegacyBootHandler,     &gEfiEventLegacyBootGuid,           NULL, FALSE },
-- 
2.20.1