Fix some corner case for LazyConIn feature

Signed-off-by: chao zhang <chao.b.zhang@intel.com>
Reviewed-by  : Ni Ruiyu   <ruiyu.ni@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13814 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/Universal/BdsDxe/Bds.h

@@ -1,7 +1,7 @@
 /** @file
   Head file for BDS Architectural Protocol implementation
 
-Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2012, 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
@@ -34,6 +34,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/StatusCodeDataTypeId.h>
 #include <Guid/LegacyDevOrder.h>
 #include <Guid/BdsHii.h>
+#include <Guid/ConnectConInEvent.h>
 #include <Protocol/GenericMemoryTest.h>
 #include <Protocol/FormBrowser2.h>
 #include <Protocol/HiiConfigAccess.h>

IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe.inf

@@ -141,6 +141,7 @@
   gBootManagerFormSetGuid                       ## SOMETIMES_PRODUCES ## BootManager HII Package
   gDeviceManagerFormSetGuid                     ## SOMETIMES_PRODUCES ## DeviceManager HII Package
   gDriverHealthFormSetGuid                      ## SOMETIMES_PRODUCES ## DriverHealth HII Package
+  gConnectConInEventGuid                        ## CONSUMES ## GUID (Connect ConIn Event)
 
 [Protocols]
   gEfiSimpleFileSystemProtocolGuid              ## PROTOCOL CONSUMES

IntelFrameworkModulePkg/Universal/BdsDxe/BdsEntry.c

@@ -72,6 +72,24 @@ BdsInitialize (
   return Status;
 }
 
+
+/**
+  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
+BdsEmptyCallbackFunction (
+  IN EFI_EVENT                Event,
+  IN VOID                     *Context
+  )
+{
+}
+
 /**
 
   This function attempts to boot for the boot order specified
@@ -93,12 +111,14 @@ BdsBootDeviceSelect (
   CHAR16            Buffer[20];
   BOOLEAN           BootNextExist;
   LIST_ENTRY        *LinkBootNext;
+  EFI_EVENT         ConnectConInEvent;
 
   //
   // Got the latest boot option
   //
   BootNextExist = FALSE;
   LinkBootNext  = NULL;
+  ConnectConInEvent = NULL;
   InitializeListHead (&BootLists);
 
   //
@@ -106,6 +126,23 @@ BdsBootDeviceSelect (
   //
   ZeroMem (Buffer, sizeof (Buffer));
 
+  //
+  // Create Event to signal ConIn connection request
+  //
+  if (PcdGetBool (PcdConInConnectOnDemand)) {
+    Status = gBS->CreateEventEx (
+                    EVT_NOTIFY_SIGNAL,
+                    TPL_CALLBACK,
+                    BdsEmptyCallbackFunction,
+                    NULL,
+                    &gConnectConInEventGuid,
+                    &ConnectConInEvent
+                    );
+    if (EFI_ERROR(Status)) {
+      ConnectConInEvent = NULL;
+    }
+  }
+
   if (mBootNext != NULL) {
     //
     // Indicate we have the boot next variable, so this time
@@ -171,6 +208,13 @@ BdsBootDeviceSelect (
     // Check the boot option list first
     //
     if (Link == &BootLists) {
+      //
+      // When LazyConIn enabled, signal connect ConIn event before enter UI
+      //
+      if (PcdGetBool (PcdConInConnectOnDemand) && ConnectConInEvent != NULL) {
+        gBS->SignalEvent (ConnectConInEvent);
+      }
+
       //
       // There are two ways to enter here:
       // 1. There is no active boot option, give user chance to
@@ -248,6 +292,14 @@ BdsBootDeviceSelect (
       // Boot success, then stop process the boot order, and
       // present the boot manager menu, front page
       //
+
+      //
+      // When LazyConIn enabled, signal connect ConIn Event before enter UI
+      //
+      if (PcdGetBool (PcdConInConnectOnDemand) && ConnectConInEvent != NULL) {
+        gBS->SignalEvent (ConnectConInEvent);
+      }
+
       Timeout = 0xffff;
       PlatformBdsEnterFrontPage (Timeout, FALSE);