audk/MdeModulePkg/Application/HelloWorld/HelloWorld.c

55 lines
1.8 KiB
C

/** @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
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>
/**
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.
@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.
**/
EFI_STATUS
EFIAPI
UefiMain (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
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));
}
}
return EFI_SUCCESS;
}