1 /* $NetBSD: bootinfo.c,v 1.4 2008/04/28 20:23:13 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jonathan Stone, Michael Hitch and Simon Burge. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <machine/types.h> 33 #include <lib/libsa/stand.h> 34 #include <lib/libkern/libkern.h> 35 36 #include "bootinfo.h" 37 38 struct btinfo_common *bootinfo; /* bootinfo address */ 39 40 static char *bi_next; /* pointer to next bootinfo data */ 41 static int bi_size; /* current bootinfo size */ 42 43 void 44 bi_init(void *bi_addr) 45 { 46 struct btinfo_magic bi_magic; 47 48 bootinfo = bi_addr; 49 bootinfo->next = 0; 50 bootinfo->type = BTINFO_NONE; 51 52 bi_next = (void *)bootinfo; 53 bi_size = 0; 54 55 bi_magic.magic = BOOTINFO_MAGIC; 56 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic)); 57 } 58 59 void 60 bi_add(void *new, int type, size_t size) 61 { 62 struct btinfo_common *bi; 63 64 if (bi_size + size > BOOTINFO_SIZE) 65 return; /* XXX should report error? */ 66 67 bi_size += size; 68 69 /* register new bootinfo data */ 70 memcpy(bi_next, new, size); 71 bi = (void *)bi_next; 72 bi->next = size; 73 bi->type = type; 74 75 /* update pointer to next bootinfo data */ 76 bi_next += size; 77 bi = (void *)bi_next; 78 bi->next = 0; 79 bi->type = BTINFO_NONE; 80 } 81