usr.sbin/installboot/arch/news.c

   1 /*      $NetBSD: news.c,v 1.6 2006/02/18 10:08:07 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Luke Mewburn and Izumi Tsutsui.
   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 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if !defined(__lint)
  38 __RCSID("$NetBSD: news.c,v 1.6 2006/02/18 10:08:07 dsl Exp $");
  39 #endif  /* !__lint */
  40
  41 #include <sys/param.h>
  42
  43 #include <assert.h>
  44 #include <err.h>
  45 #include <stddef.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <unistd.h>
  50
  51 #include "installboot.h"
  52
  53 static int news_copydisklabel(ib_params *, struct bbinfo_params *, uint8_t *);
  54
  55 static int news68k_clearboot(ib_params *);
  56 static int news68k_setboot(ib_params *);
  57 static int newsmips_clearboot(ib_params *);
  58 static int newsmips_setboot(ib_params *);
  59
  60 struct ib_mach ib_mach_news68k =
  61         { "news68k", news68k_setboot, news68k_clearboot, no_editboot,
  62                 IB_STAGE2START };
  63
  64 struct ib_mach ib_mach_newsmips =
  65         { "newsmips", newsmips_setboot, newsmips_clearboot, no_editboot,
  66                 IB_STAGE2START };
  67
  68 /*
  69  * news68k specific support
  70  */
  71
  72 static struct bbinfo_params news68k_bbparams = {
  73         NEWS68K_BBINFO_MAGIC,
  74         NEWS_BOOT_BLOCK_OFFSET,         /* write all 8K (including disklabel) */
  75         NEWS_BOOT_BLOCK_BLOCKSIZE,
  76         NEWS_BOOT_BLOCK_MAX_SIZE,
  77         0,
  78         BBINFO_BIG_ENDIAN,
  79 };
  80
  81 static int
  82 news68k_clearboot(ib_params *params)
  83 {
  84
  85         assert(params != NULL);
  86
  87         return (shared_bbinfo_clearboot(params, &news68k_bbparams,
  88             news_copydisklabel));
  89 }
  90
  91 static int
  92 news68k_setboot(ib_params *params)
  93 {
  94
  95         assert(params != NULL);
  96
  97         return (shared_bbinfo_setboot(params, &news68k_bbparams,
  98             news_copydisklabel));
  99 }
 100
 101
 102 /*
 103  * newsmips specific support
 104  */
 105
 106 static struct bbinfo_params newsmips_bbparams = {
 107         NEWSMIPS_BBINFO_MAGIC,
 108         NEWS_BOOT_BLOCK_OFFSET,         /* write all 8K (including disklabel) */
 109         NEWS_BOOT_BLOCK_BLOCKSIZE,
 110         NEWS_BOOT_BLOCK_MAX_SIZE,
 111         0,
 112         BBINFO_BIG_ENDIAN,
 113 };
 114
 115 static int
 116 newsmips_clearboot(ib_params *params)
 117 {
 118
 119         assert(params != NULL);
 120
 121         return (shared_bbinfo_clearboot(params, &newsmips_bbparams,
 122             news_copydisklabel));
 123 }
 124
 125 static int
 126 newsmips_setboot(ib_params *params)
 127 {
 128
 129         assert(params != NULL);
 130
 131         return (shared_bbinfo_setboot(params, &newsmips_bbparams,
 132             news_copydisklabel));
 133 }
 134
 135
 136 /*
 137  * news_copydisklabel --
 138  *      copy disklabel from existing location on disk into bootstrap,
 139  *      as the primary bootstrap contains the disklabel.
 140  */
 141 static int
 142 news_copydisklabel(ib_params *params, struct bbinfo_params *bbparams,
 143         uint8_t *bb)
 144 {
 145         uint8_t boot00[NEWS_BOOT_BLOCK_BLOCKSIZE];
 146         ssize_t rv;
 147
 148         assert(params != NULL);
 149         assert(params->fsfd != -1);
 150         assert(bbparams != NULL);
 151         assert(bb != NULL);
 152
 153                 /* Read label sector to copy disklabel from */
 154         memset(boot00, 0, sizeof(boot00));
 155         rv = pread(params->fsfd, boot00, sizeof(boot00), 0);
 156         if (rv == -1) {
 157                 warn("Reading label sector from `%s'", params->filesystem);
 158                 return (0);
 159         }
 160                 /* Copy disklabel */
 161         memcpy(bb + NEWS_BOOT_BLOCK_LABELOFFSET,
 162             boot00 + NEWS_BOOT_BLOCK_LABELOFFSET,
 163             sizeof(boot00) - NEWS_BOOT_BLOCK_LABELOFFSET);
 164
 165         return (1);
 166 }