Add definitions for HII Popup Protocol according to UEFI2.7.

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>
---
 MdePkg/Include/Protocol/HiiPopup.h | 81 ++++++++++++++++++++++++++++++++++++++
 MdePkg/MdePkg.dec                  |  3 ++
 2 files changed, 84 insertions(+)
 create mode 100644 MdePkg/Include/Protocol/HiiPopup.h

diff --git a/MdePkg/Include/Protocol/HiiPopup.h b/MdePkg/Include/Protocol/HiiPopup.h
new file mode 100644
index 0000000..f7d4863
--- /dev/null
+++ b/MdePkg/Include/Protocol/HiiPopup.h
@@ -0,0 +1,81 @@
+/** @file
+  This protocol provides services to display a popup window.
+  The protocol is typically produced by the forms browser and consumed by a driver callback handler.
+
+  Copyright (c) 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.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __HII_POPUP_H__
+#define __HII_POPUP_H__
+
+#define EFI_HII_POPUP_PROTOCOL_GUID \
+  {0x4311edc0, 0x6054, 0x46d4, {0x9e, 0x40, 0x89, 0x3e, 0xa9, 0x52, 0xfc, 0xcc}}
+
+#define EFI_HII_POPUP_PROTOCOL_REVISION 1
+
+typedef struct _EFI_HII_POPUP_PROTOCOL EFI_HII_POPUP_PROTOCOL;
+
+typedef enum {
+  EfiHiiPopupStyleInfo,
+  EfiHiiPopupStyleWarning,
+  EfiHiiPopupStyleError
+} EFI_HII_POPUP_STYLE;
+
+typedef enum {
+  EfiHiiPopupTypeOk,
+  EfiHiiPopupTypeOkCancel,
+  EfiHiiPopupTypeYesNo,
+  EfiHiiPopupTypeYesNoCancel
+} EFI_HII_POPUP_TYPE;
+
+typedef enum {
+  EfiHiiPopupSelectionOk,
+  EfiHiiPopupSelectionCancel,
+  EfiHiiPopupSelectionYes,
+  EfiHiiPopupSelectionNo
+} EFI_HII_POPUP_SELECTION;
+
+/**
+  Displays a popup window.
+
+  @param  This           A pointer to the EFI_HII_POPUP_PROTOCOL instance.
+  @param  PopupStyle     Popup style to use.
+  @param  PopupType      Type of the popup to display.
+  @param  HiiHandle      HII handle of the string pack containing Message
+  @param  Message        A message to display in the popup box.
+  @param  UserSelection  User selection.
+
+  @retval EFI_SUCCESS            The popup box was successfully displayed.
+  @retval EFI_INVALID_PARAMETER  HiiHandle and Message do not define a valid HII string.
+  @retval EFI_INVALID_PARAMETER  PopupType is not one of the values defined by this specification.
+  @retval EFI_OUT_OF_RESOURCES   There are not enough resources available to display the popup box.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * EFI_HII_CREATE_POPUP) (
+  IN  EFI_HII_POPUP_PROTOCOL  *This,
+  IN  EFI_HII_POPUP_STYLE     PopupStyle,
+  IN  EFI_HII_POPUP_TYPE      PopupType,
+  IN  EFI_HII_HANDLE          HiiHandle,
+  IN  EFI_STRING_ID           Message,
+  OUT EFI_HII_POPUP_SELECTION *UserSelection OPTIONAL
+);
+
+typedef struct _EFI_HII_POPUP_PROTOCOL {
+  UINT64                Revision;
+  EFI_HII_CREATE_POPUP  CreatePopup;
+} EFI_HII_POPUP_PROTOCOL;
+
+extern EFI_GUID gEfiHiiPopupProtocolGuid;
+
+#endif
+
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index d6928b3..6403002 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1409,10 +1409,13 @@
   gEfiTcg2FinalEventsTableGuid   = {0x1e2ed096, 0x30e2, 0x4254, { 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25 }}
 
   ## Include/Protocol/FormBrowser2.h
   gEfiFormBrowser2ProtocolGuid   =   {0xb9d4c360, 0xbcfb, 0x4f9b, {0x92, 0x98, 0x53, 0xc1, 0x36, 0x98, 0x22, 0x58}}
 
+  ## Include/Protocol/HiiPopup.h
+  gEfiHiiPopupProtocolGuid       =   {0x4311edc0, 0x6054, 0x46d4, {0x9e, 0x40, 0x89, 0x3e, 0xa9, 0x52, 0xfc, 0xcc}}
+
   ## Include/Protocol/HiiString.h
   gEfiHiiStringProtocolGuid      =   {0x0fd96974, 0x23aa, 0x4cdc, {0xb9, 0xcb, 0x98, 0xd1, 0x77, 0x50, 0x32, 0x2a}}
 
   ## Include/Protocol/HiiImage.h
   gEfiHiiImageProtocolGuid       =   {0x31a6406a, 0x6bdf, 0x4e46, {0xb2, 0xa2, 0xeb, 0xaa, 0x89, 0xc4, 0x09, 0x20}}
-- 
1.9.5.msysgit.1

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