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/** @file
This sample application bases on HelloWorld PCD setting
to print "UEFI Hello World!" to the UEFI Console.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>
#include <Protocol/LoadedImage.h>
#include "Library/DebugLib.h"
#include "Guid/FileSystemInfo.h"
EFI_GUID gEfiLoadedImageProtocolGuid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
//
// 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);
void getBase(EFI_SYSTEM_TABLE *SystemTable, EFI_HANDLE ImageHandle) {
EFI_STATUS status;
VOID *LoadedImage;
status = SystemTable->BootServices->OpenProtocol(
ImageHandle,
&gEfiLoadedImageProtocolGuid,
&LoadedImage,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (status != EFI_SUCCESS) {
Print(L"Failed to open LoadedImage.");
} else {
VOID *base = ((EFI_LOADED_IMAGE_PROTOCOL *) LoadedImage)->ImageBase;
/*UINT64 size = ((EFI_LOADED_IMAGE_PROTOCOL *) LoadedImage)->ImageSize;*/
Print(L"Image Base: 0x%1x\n", (unsigned long)(base));
}
}
/**
The user Entry Point for Application. The user code starts with this function
as the real entry point for the application.
@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
)
{
DEBUG((EFI_D_INFO, "My Entry Point: 0x%08x\r\n",(CHAR16*)UefiMain));
getBase(SystemTable, ImageHandle);
Print(L"UefiMain: 0x%1x\n", (unsigned long)UefiMain);
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++) {
//
// Use UefiLib Print API to print string to UEFI console
//
Print ((CHAR16 *)PcdGetPtr (PcdHelloWorldPrintString));
Print(L"Own Hello World\n");
}
}
volatile int wait = 1;
while(wait) {
__asm__ __volatile__("pause");
}
return EFI_SUCCESS;
}
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