[PATCH 2/2] MdeModulePkg: Added call to signal New Event

["Robert Phelps" <robert@ami.com>]

This code signals the Before Exit Boot Services event at the beginning
of the ExitBootServices() function.  This gives all the rest of the
code to prepare for the ExitBootServices event.

Cc: Dandan Bi <dandan.bi@intel.com> [dandanbi]
Cc: Liming Gao <gaoliming@byosoft.com.cn> [lgao4]

Signed-off-by: Robert Phelps <robert@ami.com>
---
 MdeModulePkg/Core/Dxe/DxeMain.inf       | 1 +
 MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/MdeModulePkg/Core/Dxe/DxeMain.inf b/MdeModulePkg/Core/Dxe/DxeMain.inf
index e4bca89577..346bfa7e89 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.inf
+++ b/MdeModulePkg/Core/Dxe/DxeMain.inf
@@ -122,6 +122,7 @@
   gEfiMemoryAttributesTableGuid                 ## SOMETIMES_PRODUCES   ## SystemTable
   gEfiEndOfDxeEventGroupGuid                    ## SOMETIMES_CONSUMES   ## Event
   gEfiHobMemoryAllocStackGuid                   ## SOMETIMES_CONSUMES   ## SystemTable
+  gEfiEventBeforeExitBootServicesGuid           ## PRODUCES   ## Event

 [Ppis]
   gEfiVectorHandoffInfoPpiGuid                  ## UNDEFINED # HOB
diff --git a/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c b/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
index 5733f0c8ec..1417f0eaa8 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
+++ b/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
@@ -763,6 +763,8 @@ CoreExitBootServices (
 {
   EFI_STATUS  Status;

+  // Before-exit-boot-services event
+  CoreNotifySignalList (&gEfiEventBeforeExitBootServicesGuid);
   //
   // Disable Timer
   //
--
2.36.1.windows.1
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