V2: Refine the comments.


In UI page, some configuration change may require system reset.
BootManagerUiLib misses this check before exiting UiApp to boot
other boot options. Now add the check.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
---
 .../Library/BootManagerUiLib/BootManager.c         | 51 +++++++++++++++++++++-
 .../Library/BootManagerUiLib/BootManager.h         |  4 +-
 .../Library/BootManagerUiLib/BootManagerUiLib.inf  |  3 +-
 3 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/MdeModulePkg/Library/BootManagerUiLib/BootManager.c b/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
index bf872f8..8e77632 100644
--- a/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
+++ b/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
@@ -1,9 +1,9 @@
 /** @file
   The boot manager reference implementation
 
-Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2017, 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 that accompanies this distribution.
 The full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php.
 
@@ -292,10 +292,54 @@ BmSetConsoleMode (
 
   return EFI_SUCCESS;
 }
 
 /**
+
+  Check whether a reset is needed,if reset is needed, Popup a menu to notice user.
+
+**/
+VOID
+BmSetupResetReminder (
+  VOID
+  )
+{
+  EFI_INPUT_KEY                 Key;
+  CHAR16                        *StringBuffer1;
+  CHAR16                        *StringBuffer2;
+  EFI_STATUS                    Status;
+  EDKII_FORM_BROWSER_EXTENSION2_PROTOCOL *FormBrowserEx2;
+
+  //
+  // Use BrowserEx2 protocol to check whether reset is required.
+  //
+  Status = gBS->LocateProtocol (&gEdkiiFormBrowserEx2ProtocolGuid, NULL, (VOID **) &FormBrowserEx2);
+  //
+  //check any reset required change is applied? if yes, reset system
+  //
+  if (!EFI_ERROR(Status) && FormBrowserEx2->IsResetRequired ()) {
+    StringBuffer1 = AllocateZeroPool (MAX_STRING_LEN * sizeof (CHAR16));
+    ASSERT (StringBuffer1 != NULL);
+    StringBuffer2 = AllocateZeroPool (MAX_STRING_LEN * sizeof (CHAR16));
+    ASSERT (StringBuffer2 != NULL);
+    StrCpyS (StringBuffer1, MAX_STRING_LEN, L"Configuration changed. Reset to apply it Now.");
+    StrCpyS (StringBuffer2, MAX_STRING_LEN, L"Press ENTER to reset");
+    //
+    // Popup a menu to notice user
+    //
+    do {
+      CreatePopUp (EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE, &Key, StringBuffer1, StringBuffer2, NULL);
+    } while (Key.UnicodeChar != CHAR_CARRIAGE_RETURN);
+
+    FreePool (StringBuffer1);
+    FreePool (StringBuffer2);
+
+    gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);
+  }
+}
+
+/**
   Group the legacy boot options in the BootOption.
 
   The routine assumes the boot options in the beginning that covers all the device 
   types are ordered properly and re-position the following boot options just after
   the corresponding boot options with the same device type.
@@ -780,10 +824,15 @@ BootManagerCallback (
   //
   gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY, EFI_BLACK));
   gST->ConOut->ClearScreen (gST->ConOut);
 
   //
+  //check any reset required change is applied? if yes, reset system
+  //
+  BmSetupResetReminder ();
+
+  //
   // parse the selected option
   //
   BmSetConsoleMode (FALSE);
   EfiBootManagerBoot (&BootOption[QuestionId - 1]);
   BmSetConsoleMode (TRUE);
diff --git a/MdeModulePkg/Library/BootManagerUiLib/BootManager.h b/MdeModulePkg/Library/BootManagerUiLib/BootManager.h
index 1bedff4..3adddf6 100644
--- a/MdeModulePkg/Library/BootManagerUiLib/BootManager.h
+++ b/MdeModulePkg/Library/BootManagerUiLib/BootManager.h
@@ -1,9 +1,9 @@
 /** @file
   The boot manager reference implementation
 
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2017, 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 that accompanies this distribution.
 The full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php.
 
@@ -18,10 +18,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/MdeModuleHii.h>
 #include <Guid/GlobalVariable.h>
 
 #include <Protocol/HiiConfigAccess.h>
 #include <Protocol/DevicePathToText.h>
+#include <Protocol/FormBrowserEx2.h>
 
 #include <Library/PrintLib.h>
 #include <Library/DebugLib.h>
 #include <Library/BaseMemoryLib.h>
 #include <Library/UefiBootServicesTableLib.h>
@@ -53,10 +54,11 @@ typedef struct {
 
 #define BOOT_MANAGER_FORM_ID     0x1000
 
 #define LABEL_BOOT_OPTION        0x00
 #define LABEL_BOOT_OPTION_END    0x01
+#define MAX_STRING_LEN           200
 
 //
 // Variable created with this flag will be "Efi:...."
 //
 #define VAR_FLAG  EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE
diff --git a/MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf b/MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
index d2df24b..7983b07 100644
--- a/MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
+++ b/MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
@@ -1,9 +1,9 @@
 ## @file
 #  Boot Manager Library used by UiApp.
 #
-#  Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2011 - 2017, 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 that accompanies this distribution.
 #  The full text of the license may be found at
 #  http://opensource.org/licenses/bsd-license.php.
 #  
@@ -54,10 +54,11 @@
   gEfiIfrFrontPageGuid                          ## CONSUMES ## GUID
 
 [Protocols]
   gEfiHiiConfigAccessProtocolGuid               ## CONSUMES
   gEfiDevicePathToTextProtocolGuid              ## CONSUMES
+  gEdkiiFormBrowserEx2ProtocolGuid              ## CONSUMES
 
 [FeaturePcd]
 
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutRow                         ## CONSUMES
-- 
1.9.5.msysgit.1

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