main.c

/*
 * UEFI:SIMPLE - UEFI development made easy
 * Copyright © 2014-2016 Pete Batard <pete@akeo.ie> - Public Domain
 * See COPYING for the full licensing terms.
 */
#include <efi.h>
#include <efilib.h>

// Application entrypoint (must be set to 'efi_main' for gnu-efi crt0 compatibility)
EFI_STATUS efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
{
	EFI_INPUT_KEY Key;

	InitializeLib(ImageHandle, SystemTable);

	/*
	 * In addition to the standard %-based flags, Print() supports the following:
	 *   %N       Set output attribute to normal
	 *   %H       Set output attribute to highlight
	 *   %E       Set output attribute to error
	 *   %B       Set output attribute to blue color
	 *   %V       Set output attribute to green color
	 *   %r       Human readable version of a status code
	 */
	Print(L"\n%H*** UEFI:SIMPLE ***%N\n\n");

	Print(L"%EPress any key to exit.%N\n");
	SystemTable->ConIn->Reset(SystemTable->ConIn, FALSE);
	while (SystemTable->ConIn->ReadKeyStroke(SystemTable->ConIn, &Key) == EFI_NOT_READY);
#if defined(_DEBUG)
	// If running in debug mode, use the EFI shut down call to close QEMU
	RT->ResetSystem(EfiResetShutdown, EFI_SUCCESS, 0, NULL);
#endif

	return EFI_SUCCESS;
}