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 #if defined(LOADER_FDT_SUPPORT) 29 #include <sys/param.h> 30 #include <fdt_platform.h> 31 #endif 32 33 #include "loader_efi.h" 34 35 int 36 efi_autoload(void) 37 { 38 39 #if defined(LOADER_FDT_SUPPORT) 40 /* 41 * Setup the FDT early so that we're not loading files during bi_load. 42 * Any such loading is inherently broken since bi_load uses the space 43 * just after all currently loaded files for the data that will be 44 * passed to the kernel and newly loaded files will be positioned in 45 * that same space. 46 * 47 * We're glossing over errors here because LOADER_FDT_SUPPORT does not 48 * imply that we're on a platform where FDT is a requirement. If we 49 * fix this, then the error handling here should be fixed accordingly. 50 */ 51 if (fdt_is_setup() == 0) 52 fdt_setup_fdtp(); 53 #endif 54 return (0); 55 } 56