1 /* $NetBSD: bootinfo.c,v 1.1 1999/04/30 09:29:40 christos 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 * 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 <sys/param.h> 40 #include <machine/types.h> 41 #include <lib/libsa/stand.h> 42 #include <lib/libkern/libkern.h> 43 44 #include "bootinfo.h" 45 46 static char *bootinfo = NULL; 47 static char *bi_next; 48 static int bi_size; 49 50 u_long 51 bi_init(addr) 52 u_long addr; 53 { 54 struct btinfo_common *bi; 55 struct btinfo_magic bi_magic; 56 u_long *endp; 57 58 endp = (u_long *)ALIGN(addr); 59 /* 60 * For the first word we load our end address, 61 * giving enough space for the bootinfo structure. 62 */ 63 endp[0] = (u_long)((char *)endp + BOOTINFO_SIZE); 64 bootinfo = (char *)ALIGN(&endp[2]); 65 endp[1] = (u_long)bootinfo; 66 bi = (struct btinfo_common *)bootinfo; 67 bi->next = bi->type = 0; 68 bi_next = bootinfo; 69 bi_size = 0; 70 71 bi_magic.magic = BOOTINFO_MAGIC; 72 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic)); 73 return (u_long) endp; 74 } 75 76 void 77 bi_add(new, type, size) 78 void *new; 79 int type; 80 size_t size; 81 { 82 struct btinfo_common *bi; 83 84 if (bi_size + size > BOOTINFO_SIZE) 85 return; /* XXX error? */ 86 87 bi = new; 88 bi->next = ALIGN(size); 89 bi->type = type; 90 memcpy(bi_next, new, size); 91 bi_next += ALIGN(size); 92 93 bi = (struct btinfo_common *)bi_next; 94 bi->next = bi->type = 0; 95 } 96