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news.c revision 1.6.18.1 
      1 /*	$NetBSD: news.c,v 1.6.18.1 2008/05/18 12:36:19 yamt 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 1.6.18.1 2008/05/18 12:36:19 yamt 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 }
    167