usr.sbin/installboot/arch/sparc64.c

   1 /*      $NetBSD: sparc64.c,v 1.18 2010/01/14 16:27:49 tsutsui 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 of Wasabi Systems.
   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 /*
  33  * Copyright (c) 2002 Matthew R. Green
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  50  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  51  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  52  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  53  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58 #if HAVE_NBTOOL_CONFIG_H
  59 #include "nbtool_config.h"
  60 #endif
  61
  62 #include <sys/cdefs.h>
  63 #if !defined(__lint)
  64 __RCSID("$NetBSD: sparc64.c,v 1.18 2010/01/14 16:27:49 tsutsui Exp $");
  65 #endif  /* !__lint */
  66
  67 #include <sys/param.h>
  68
  69 #include <assert.h>
  70 #include <err.h>
  71 #include <stddef.h>
  72 #include <stdio.h>
  73 #include <stdlib.h>
  74 #include <string.h>
  75 #include <unistd.h>
  76
  77 #include "installboot.h"
  78
  79 static int sparc64_clearboot(ib_params *);
  80 static int sparc64_setboot(ib_params *);
  81
  82 struct ib_mach ib_mach_sparc64 =
  83         { "sparc64", sparc64_setboot, sparc64_clearboot, no_editboot, 0};
  84
  85 static int
  86 sparc64_clearboot(ib_params *params)
  87 {
  88         char    bb[SPARC64_BOOT_BLOCK_MAX_SIZE];
  89         ssize_t rv;
  90
  91         assert(params != NULL);
  92         assert(params->fsfd != -1);
  93         assert(params->filesystem != NULL);
  94
  95         if (params->flags & (IB_STAGE1START | IB_STAGE2START)) {
  96                 warnx("`-b bno' and `-B bno' are not supported for %s",
  97                     params->machine->name);
  98                 return (0);
  99         }
 100
 101         /* first check that it _could_ exist here */
 102         rv = pread(params->fsfd, &bb, sizeof(bb), SPARC64_BOOT_BLOCK_OFFSET);
 103         if (rv == -1) {
 104                 warn("Reading `%s'", params->filesystem);
 105                 return (0);
 106         } else if (rv != sizeof(bb)) {
 107                 warnx("Reading `%s': short read", params->filesystem);
 108                 return (0);
 109         }
 110
 111         /* now clear it out to nothing */
 112         memset(&bb, 0, sizeof(bb));
 113
 114         if (params->flags & IB_VERBOSE)
 115                 printf("%slearing boot block\n",
 116                     (params->flags & IB_NOWRITE) ? "Not c" : "C");
 117         if (params->flags & IB_NOWRITE)
 118                 return (1);
 119
 120         rv = pwrite(params->fsfd, &bb, sizeof(bb), SPARC64_BOOT_BLOCK_OFFSET);
 121         if (rv == -1) {
 122                 warn("Writing `%s'", params->filesystem);
 123                 return (0);
 124         } else if (rv != sizeof(bb)) {
 125                 warnx("Writing `%s': short write", params->filesystem);
 126                 return (0);
 127         }
 128
 129         return (1);
 130 }
 131
 132 static int
 133 sparc64_setboot(ib_params *params)
 134 {
 135         char            bb[SPARC64_BOOT_BLOCK_MAX_SIZE];
 136         int             retval;
 137         ssize_t         rv;
 138
 139         assert(params != NULL);
 140         assert(params->fsfd != -1);
 141         assert(params->filesystem != NULL);
 142         assert(params->s1fd != -1);
 143         assert(params->stage1 != NULL);
 144
 145         retval = 0;
 146
 147         if (params->flags & (IB_STAGE1START | IB_STAGE2START)) {
 148                 warnx("`-b bno' and `-B bno' are not supported for %s",
 149                     params->machine->name);
 150                 goto done;
 151         }
 152
 153         memset(&bb, 0, SPARC64_BOOT_BLOCK_MAX_SIZE);
 154         rv = read(params->s1fd, &bb, sizeof(bb));
 155         if (rv == -1) {
 156                 warn("Reading `%s'", params->stage1);
 157                 goto done;
 158         }
 159
 160         if (params->flags & IB_VERBOSE) {
 161                 printf("Bootstrap start sector: %u\n",
 162                     SPARC64_BOOT_BLOCK_OFFSET / SPARC64_BOOT_BLOCK_BLOCKSIZE);
 163                 printf("Bootstrap byte count:   %u\n", (unsigned)rv);
 164                 printf("%sriting bootstrap\n",
 165                     (params->flags & IB_NOWRITE) ? "Not w" : "W");
 166         }
 167         if (params->flags & IB_NOWRITE) {
 168                 retval = 1;
 169                 goto done;
 170         }
 171
 172         rv = pwrite(params->fsfd, &bb, SPARC64_BOOT_BLOCK_MAX_SIZE,
 173             SPARC64_BOOT_BLOCK_OFFSET);
 174         if (rv == -1) {
 175                 warn("Writing `%s'", params->filesystem);
 176                 goto done;
 177         } else if (rv != SPARC64_BOOT_BLOCK_MAX_SIZE) {
 178                 warnx("Writing `%s': short write", params->filesystem);
 179                 goto done;
 180         } else
 181                 retval = 1;
 182
 183  done:
 184         return (retval);
 185 }