source: bootcd/isolinux/syslinux-6.03/gpxe/src/arch/x86/prefix/efidrvprefix.c

/*
 * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

FILE_LICENCE ( GPL2_OR_LATER );

#include <stdlib.h>
#include <gpxe/init.h>
#include <gpxe/efi/efi.h>

/**
 * EFI entry point
 *
 * @v image_handle      Image handle
 * @v systab            System table
 * @ret efirc           EFI return status code
 */
EFI_STATUS EFIAPI _start ( EFI_HANDLE image_handle,
                           EFI_SYSTEM_TABLE *systab ) {
        EFI_STATUS efirc;

        /* Initialise EFI environment */
        if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
                return efirc;

        /* Initialise gPXE environment */
        initialise();
        startup();

        /* Install SNP driver and return */
        return RC_TO_EFIRC ( efi_snp_install () );
}