1 /* $NetBSD: bootinfo.c,v 1.2 2008/04/28 20:23:36 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 <sys/param.h> 33 #include <machine/types.h> 34 #include <lib/libsa/stand.h> 35 #include <lib/libkern/libkern.h> 36 37 #include "bootinfo.h" 38 39 static char *bootinfo = NULL; 40 static char *bi_next; 41 static int bi_size; 42 43 u_long 44 bi_init(addr) 45 u_long addr; 46 { 47 struct btinfo_common *bi; 48 struct btinfo_magic bi_magic; 49 u_long *endp; 50 51 endp = (u_long *)ALIGN(addr); 52 /* 53 * For the first word we load our end address, 54 * giving enough space for the bootinfo structure. 55 */ 56 endp[0] = (u_long)((char *)endp + BOOTINFO_SIZE); 57 bootinfo = (char *)ALIGN(&endp[2]); 58 endp[1] = (u_long)bootinfo; 59 bi = (struct btinfo_common *)bootinfo; 60 bi->next = bi->type = 0; 61 bi_next = bootinfo; 62 bi_size = 0; 63 64 bi_magic.magic = BOOTINFO_MAGIC; 65 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic)); 66 return (u_long) endp; 67 } 68 69 void 70 bi_add(new, type, size) 71 void *new; 72 int type; 73 size_t size; 74 { 75 struct btinfo_common *bi; 76 77 if (bi_size + size > BOOTINFO_SIZE) 78 return; /* XXX error? */ 79 80 bi = new; 81 bi->next = ALIGN(size); 82 bi->type = type; 83 memcpy(bi_next, new, size); 84 bi_next += ALIGN(size); 85 86 bi = (struct btinfo_common *)bi_next; 87 bi->next = bi->type = 0; 88 } 89