From 54cd17e9842d82dae3cd78686e05c4dc37a3540d Mon Sep 17 00:00:00 2001
From: jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 16 Jun 2011 23:28:02 +0000
Subject: MdeModulePkg DXE Core: Add Idle event during BootServices
 WaitForEvent

Signal an Idle event during BootServices WaitForEvent.

Signed-off-by: jljusten
Reviewed-by: mdkinney
Reviewed-by: rsun3

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11841 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c |  6 +++---
 MdeModulePkg/Core/Dxe/DxeMain.h               | 17 +++++++++++++++++
 MdeModulePkg/Core/Dxe/DxeMain.inf             |  2 +-
 MdeModulePkg/Core/Dxe/Event/Event.c           | 21 ++++++++++++++++++---
 4 files changed, 39 insertions(+), 7 deletions(-)

(limited to 'MdeModulePkg/Core')

diff --git a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
index 79b895bcfa..09c7093518 100644
--- a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
@@ -26,7 +26,7 @@
   Depex - Dependency Expresion.
   SOR   - Schedule On Request - Don't schedule if this bit is set.
 
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -402,7 +402,7 @@ CoreTrust (
 **/
 VOID
 EFIAPI
-EmptyFuntion (
+CoreEmptyCallbackFunction (
   IN EFI_EVENT                Event,
   IN VOID                     *Context
   )
@@ -450,7 +450,7 @@ CoreDispatcher (
   Status = CoreCreateEventEx (
              EVT_NOTIFY_SIGNAL,
              TPL_NOTIFY,
-             EmptyFuntion,
+             CoreEmptyCallbackFunction,
              NULL,
              &gEfiEventDxeDispatchGuid,
              &DxeDispatchEvent
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.h b/MdeModulePkg/Core/Dxe/DxeMain.h
index f5651026fa..dfd4980eac 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.h
+++ b/MdeModulePkg/Core/Dxe/DxeMain.h
@@ -63,6 +63,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/EventLegacyBios.h>
 #include <Guid/EventGroup.h>
 #include <Guid/LoadModuleAtFixedAddress.h>
+#include <Guid/IdleLoopEvent.h>
 
 #include <Library/DxeCoreEntryPoint.h>
 #include <Library/DebugLib.h>
@@ -2459,4 +2460,20 @@ CoreReleaseLock (
   IN EFI_LOCK  *Lock
   );
 
+
+/**
+  An empty function to pass error checking of CreateEventEx ().
+
+  @param  Event                 Event whose notification function is being invoked.
+  @param  Context               Pointer to the notification function's context,
+                                which is implementation-dependent.
+
+**/
+VOID
+EFIAPI
+CoreEmptyCallbackFunction (
+  IN EFI_EVENT                Event,
+  IN VOID                     *Context
+  );
+
 #endif
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.inf b/MdeModulePkg/Core/Dxe/DxeMain.inf
index e00ee8d284..3170e37be8 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.inf
+++ b/MdeModulePkg/Core/Dxe/DxeMain.inf
@@ -107,7 +107,7 @@
   gEfiMemoryTypeInformationGuid                 ## CONSUMES ## GUID
   gEfiEventDxeDispatchGuid                      ## CONSUMES ## GUID
   gLoadFixedAddressConfigurationTableGuid       ## SOMETIMES_CONSUMES
-  
+  gIdleLoopEventGuid                            ## CONSUMES ## GUID
 
 [Protocols]
   gEfiStatusCodeRuntimeProtocolGuid             ## SOMETIMES_CONSUMES
diff --git a/MdeModulePkg/Core/Dxe/Event/Event.c b/MdeModulePkg/Core/Dxe/Event/Event.c
index 3d15c0c12b..d9fc7586a7 100644
--- a/MdeModulePkg/Core/Dxe/Event/Event.c
+++ b/MdeModulePkg/Core/Dxe/Event/Event.c
@@ -1,7 +1,7 @@
 /** @file
   UEFI Event support functions implemented in this file.
 
-Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -87,6 +87,11 @@ UINT32 mEventTable[] = {
   EVT_TIMER | EVT_NOTIFY_WAIT,
 };
 
+///
+/// gIdleLoopEvent - Event which is signalled when the core is idle
+///
+EFI_EVENT       gIdleLoopEvent = NULL;
+
 
 /**
   Enter critical section by acquiring the lock on gEventQueueLock.
@@ -134,6 +139,15 @@ CoreInitializeEventServices (
 
   CoreInitializeTimer ();
 
+  CoreCreateEventEx (
+    EVT_NOTIFY_SIGNAL,
+    TPL_NOTIFY,
+    CoreEmptyCallbackFunction,
+    NULL,
+    &gIdleLoopEventGuid,
+    &gIdleLoopEvent
+    );
+
   return EFI_SUCCESS;
 }
 
@@ -630,9 +644,9 @@ CoreWaitForEvent (
     }
 
     //
-    // This was the location of the Idle loop callback in EFI 1.x reference
-    // code. We don't have that concept in this base at this point.
+    // Signal the Idle event
     //
+    CoreSignalEvent (gIdleLoopEvent);
   }
 }
 
@@ -702,3 +716,4 @@ CoreCloseEvent (
 
   return Status;
 }
+
-- 
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