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61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
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/** @file
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This sample application bases on HelloWorld PCD setting
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to print "UEFI Hello World!" to the UEFI Console.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <Library/PcdLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiApplicationEntryPoint.h>
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//
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// String token ID of help message text.
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// Shell supports to find help message in the resource section of an application image if
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// .MAN file is not found. This global variable is added to make build tool recognizes
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// that the help string is consumed by user and then build tool will add the string into
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// the resource section. Thus the application can use '-?' option to show help message in
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// Shell.
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//
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GLOBAL_REMOVE_IF_UNREFERENCED EFI_STRING_ID mStringHelpTokenId = STRING_TOKEN (STR_HELLO_WORLD_HELP_INFORMATION);
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/**
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The user Entry Point for Application. The user code starts with this function
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as the real entry point for the application.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval other Some error occurs when executing this entry point.
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**/
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EFI_STATUS
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EFIAPI
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UefiMain (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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UINT32 Index;
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Index = 0;
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//
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// Three PCD type (FeatureFlag, UINT32 and String) are used as the sample.
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//
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if (FeaturePcdGet (PcdHelloWorldPrintEnable)) {
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for (Index = 0; Index < PcdGet32 (PcdHelloWorldPrintTimes); Index ++) {
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//
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// Use UefiLib Print API to print string to UEFI console
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//
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Print ((CHAR16*)PcdGetPtr (PcdHelloWorldPrintString));
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}
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}
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return EFI_SUCCESS;
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}
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