1 /*- 2 * Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #if defined(LOADER_FDT_SUPPORT) 31 #include <sys/param.h> 32 #include <fdt_platform.h> 33 #endif 34 35 #include "loader_efi.h" 36 37 int 38 efi_autoload(void) 39 { 40 41 #if defined(LOADER_FDT_SUPPORT) 42 /* 43 * Setup the FDT early so that we're not loading files during bi_load. 44 * Any such loading is inherently broken since bi_load uses the space 45 * just after all currently loaded files for the data that will be 46 * passed to the kernel and newly loaded files will be positioned in 47 * that same space. 48 * 49 * We're glossing over errors here because LOADER_FDT_SUPPORT does not 50 * imply that we're on a platform where FDT is a requirement. If we 51 * fix this, then the error handling here should be fixed accordingly. 52 */ 53 fdt_setup_fdtp(); 54 #endif 55 return (0); 56 } 57