1 /* $NetBSD: bootinfo.c,v 1.4 2007/10/17 19:54:09 garbled Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <machine/types.h> 40 #include <lib/libsa/stand.h> 41 #include <lib/libkern/libkern.h> 42 43 #include "boot.h" 44 #include "bootinfo.h" 45 46 static char *bootinfo = NULL; 47 static char *bi_next; 48 static int bi_size; 49 50 char * 51 bi_init(void) 52 { 53 struct btinfo_common *bi; 54 struct btinfo_magic bi_magic; 55 56 if ((bootinfo = (char *)alloc(BOOTINFO_SIZE)) != NULL) { 57 bi = (struct btinfo_common *)bootinfo; 58 bi->next = bi->type = 0; 59 bi_next = bootinfo; 60 bi_size = 0; 61 62 bi_magic.magic = BOOTINFO_MAGIC; 63 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic)); 64 } 65 66 return bootinfo; 67 } 68 69 void bi_add(void *new, int type, int size) 70 { 71 struct btinfo_common *bi; 72 73 if (bi_size + size > BOOTINFO_SIZE) 74 return; /* XXX error? */ 75 76 if (bootinfo != NULL) { 77 DPRINTF(("Adding %d of size %d @0x%x\n", 78 type, size, (char*)bi_next)); 79 80 bi = new; 81 bi->next = size; 82 bi->type = type; 83 memcpy(bi_next, new, size); 84 bi_next += size; 85 86 bi = (struct btinfo_common *)bi_next; 87 bi->next = bi->type = 0; 88 } 89 } 90