sys/arch/zaurus/stand/zboot/bootinfo.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1997
   5  *      Matthias Drochner.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  */
  28
  29 #include "boot.h"
  30 #include "bootinfo.h"
  31
  32 struct btinfo *bootinfo;
  33
  34 static int
  35 bi_find(int type)
  36 {
  37         struct btinfo_common *btinfo;
  38         int i;
  39
  40         for (i = 0; i < bootinfo->nentries; i++) {
  41                 btinfo = (struct btinfo_common *)(bootinfo->entry[i]);
  42                 if (btinfo->type == type) {
  43                         return i;
  44                 }
  45         }
  46         return -1;
  47 }
  48
  49 void
  50 bi_add(struct btinfo_common *what, int type, int size)
  51 {
  52         int idx;
  53
  54         what->len = size;
  55         what->type = type;
  56
  57         if (bootinfo) {
  58                 idx = bi_find(type);
  59                 if (idx < 0) {
  60                         idx = bootinfo->nentries++;
  61                 }
  62                 bootinfo->entry[idx] = (u_long)what;
  63         }
  64 }
  65
  66 void
  67 bi_del(int type)
  68 {
  69         int idx;
  70         int i;
  71
  72         if (bootinfo) {
  73                 idx = bi_find(type);
  74                 if (idx >= 0) {
  75                         for (i = idx + 1; i < bootinfo->nentries; i++) {
  76                                 bootinfo->entry[i - 1] = bootinfo->entry[i];
  77                         }
  78                         bootinfo->entry[--bootinfo->nentries] = 0L;
  79                 }
  80         }
  81 }