X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdeModulePkg%2FApplication%2FHelloWorld%2FHelloWorld.c;h=0008cd14fda9f5f0fbf21b8df2a65682bfcc013d;hb=d0def00d33fa5d4a70c427dfc9a36d826b42967d;hp=5ffddfb481ce74290584ea32bc9aa3df15510839;hpb=40394b0fd4f8f66574949ad880d43c3a02a01c73;p=mirror_edk2.git

diff --git a/MdeModulePkg/Application/HelloWorld/HelloWorld.c b/MdeModulePkg/Application/HelloWorld/HelloWorld.c
index 5ffddfb481..0008cd14fd 100644
--- a/MdeModulePkg/Application/HelloWorld/HelloWorld.c
+++ b/MdeModulePkg/Application/HelloWorld/HelloWorld.c
@@ -1,14 +1,15 @@
 /** @file
-  This simple application just print a "UEFI Hello World!" to the UEFI Console.
-  
-  Copyright (c) 2006 - 2007, Intel Corporation                                                         
-  All rights reserved. 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        
-  http://opensource.org/licenses/bsd-license.php                                            
+  This sample application bases on HelloWorld PCD setting
+  to print "UEFI Hello World!" to the UEFI Console.
 
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+  Copyright (c) 2006 - 2018, 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
+  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.
 
 **/
 
@@ -17,15 +18,23 @@
 #include <Library/UefiLib.h>
 #include <Library/UefiApplicationEntryPoint.h>
 
+//
+// String token ID of help message text.
+// Shell supports to find help message in the resource section of an application image if
+// .MAN file is not found. This global variable is added to make build tool recognizes
+// that the help string is consumed by user and then build tool will add the string into
+// the resource section. Thus the application can use '-?' option to show help message in
+// Shell.
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_STRING_ID mStringHelpTokenId = STRING_TOKEN (STR_HELLO_WORLD_HELP_INFORMATION);
 
 /**
   The user Entry Point for Application. The user code starts with this function
-  as the real entry point for the image goes into a library that calls this 
-  function.
+  as the real entry point for the application.
 
-  @param[in] ImageHandle    The firmware allocated handle for the EFI image.  
+  @param[in] ImageHandle    The firmware allocated handle for the EFI image.
   @param[in] SystemTable    A pointer to the EFI System Table.
-  
+
   @retval EFI_SUCCESS       The entry point is executed successfully.
   @retval other             Some error occurs when executing this entry point.
 
@@ -37,16 +46,19 @@ UefiMain (
   IN EFI_SYSTEM_TABLE  *SystemTable
   )
 {
-	UINT32 Index;
-	
-	Index = 0;
-  
+  UINT32 Index;
+
+  Index = 0;
+
   //
   // Three PCD type (FeatureFlag, UINT32 and String) are used as the sample.
   //
   if (FeaturePcdGet (PcdHelloWorldPrintEnable)) {
-  	for (Index = 0; Index < PcdGet32 (PcdHelloWorldPrintTimes); Index ++) {
-    	Print ((CHAR16*)PcdGetPtr (PcdHelloWorldPrintString));
+    for (Index = 0; Index < PcdGet32 (PcdHelloWorldPrintTimes); Index ++) {
+      //
+      // Use UefiLib Print API to print string to UEFI console
+      //
+      Print ((CHAR16*)PcdGetPtr (PcdHelloWorldPrintString));
     }
   }