1. Add three sample PCD in HelloWorld application for user reference of PCD usage.

[mirror_edk2.git] / MdeModulePkg / Application / HelloWorld / HelloWorld.c

diff --git a/MdeModulePkg/Application/HelloWorld/HelloWorld.c b/MdeModulePkg/Application/HelloWorld/HelloWorld.c
index bcabed5796dec4b95305ed0d59a2c861ef0147a7..b1d16f76a0b0b9a2de7ec7987c042c5b47606419 100644 (file)
--- a/MdeModulePkg/Application/HelloWorld/HelloWorld.c
+++ b/MdeModulePkg/Application/HelloWorld/HelloWorld.c
@@ -12,21 +12,45 @@
 \r
 **/\r
 \r
-//\r
-// Include common header file for this module.\r
-//\r
-#include "CommonHeader.h"\r
+#include <Uefi.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/UefiApplicationEntryPoint.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
 \r
+\r
+/**\r
+  The user Entry Point for Application. The user code starts with this function\r
+  as the real entry point for the image goes into a library that calls this \r
+  function.\r
+\r
+  @param[in] ImageHandle    The firmware allocated handle for the EFI image.  \r
+  @param[in] SystemTable    A pointer to the EFI System Table.\r
+  \r
+  @retval EFI_SUCCESS       The entry point is executed successfully.\r
+  @retval other             Some error occurs when executing this entry point.\r
+\r
+**/\r
 EFI_STATUS\r
 EFIAPI\r
 UefiMain (\r
   IN EFI_HANDLE        ImageHandle,\r
   IN EFI_SYSTEM_TABLE  *SystemTable\r
   )\r
-\r
 {\r
+       UINT32 Index;\r
+       \r
+       Index = 0;\r
   \r
-  Print ((CHAR16 *)L"UEFI Hello World!\n");\r
+  //\r
+  // Three PCD type (FeatureFlag, UINT32 and String) are used as the sample.\r
+  //\r
+  if (FeaturePcdGet (PcdHelloWorldPrintEnable)) {\r
+       for (Index = 0; Index < PcdGet32 (PcdHelloWorldPrintTimes); Index ++) {\r
+       Print ((CHAR16*)PcdGetPtr (PcdHelloWorldPrintString));\r
+    }\r
+  }\r
 \r
   return EFI_SUCCESS;\r
 }\r