sys/arch/mipsco/stand/common/bootinfo.c

   1 /*      $NetBSD: bootinfo.c,v 1.3 2008/01/31 17:44:38 tsutsui 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  *
  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 static char *bootinfo = NULL;
  39 static char *bi_next;
  40 static int bi_size;
  41
  42 void bi_init(addr)
  43         paddr_t addr;
  44 {
  45         struct btinfo_common *bi;
  46         struct btinfo_magic bi_magic;
  47
  48         bootinfo = (char *)addr;
  49         bi = (struct btinfo_common *)bootinfo;
  50         bi->next = bi->type = 0;
  51         bi_next = bootinfo;
  52         bi_size = 0;
  53
  54         bi_magic.magic = BOOTINFO_MAGIC;
  55         bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic));
  56 }
  57
  58 void bi_add(new, type, size)
  59         void *new;
  60         int type, size;
  61 {
  62         struct btinfo_common *bi;
  63
  64         if (bi_size + size > BOOTINFO_SIZE)
  65                 return;                         /* XXX error? */
  66
  67         bi = new;
  68         bi->next = size;
  69         bi->type = type;
  70         memcpy(bi_next, new, size);
  71         bi_next += size;
  72
  73         bi = (struct btinfo_common *)bi_next;
  74         bi->next = bi->type = 0;
  75
  76         bi_size += size;
  77 }