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      1 /*	$NetBSD: news.c,v 1.8 2019/05/07 04:35:31 thorpej 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 1.8 2019/05/07 04:35:31 thorpej 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 	.name		=	"news68k",
     62 	.setboot	=	news68k_setboot,
     63 	.clearboot	=	news68k_clearboot,
     64 	.editboot	=	no_editboot,
     65 	.valid_flags	=	IB_STAGE2START,
     66 };
     67 
     68 struct ib_mach ib_mach_newsmips = {
     69 	.name		=	"newsmips",
     70 	.setboot	=	newsmips_setboot,
     71 	.clearboot	=	newsmips_clearboot,
     72 	.editboot	=	no_editboot,
     73 	.valid_flags	=	IB_STAGE2START,
     74 };
     75 
     76 /*
     77  * news68k specific support
     78  */
     79 
     80 static struct bbinfo_params news68k_bbparams = {
     81 	NEWS68K_BBINFO_MAGIC,
     82 	NEWS_BOOT_BLOCK_OFFSET,		/* write all 8K (including disklabel) */
     83 	NEWS_BOOT_BLOCK_BLOCKSIZE,
     84 	NEWS_BOOT_BLOCK_MAX_SIZE,
     85 	0,
     86 	BBINFO_BIG_ENDIAN,
     87 };
     88 
     89 static int
     90 news68k_clearboot(ib_params *params)
     91 {
     92 
     93 	assert(params != NULL);
     94 
     95 	return (shared_bbinfo_clearboot(params, &news68k_bbparams,
     96 	    news_copydisklabel));
     97 }
     98 
     99 static int
    100 news68k_setboot(ib_params *params)
    101 {
    102 
    103 	assert(params != NULL);
    104 
    105 	return (shared_bbinfo_setboot(params, &news68k_bbparams,
    106 	    news_copydisklabel));
    107 }
    108 
    109 
    110 /*
    111  * newsmips specific support
    112  */
    113 
    114 static struct bbinfo_params newsmips_bbparams = {
    115 	NEWSMIPS_BBINFO_MAGIC,
    116 	NEWS_BOOT_BLOCK_OFFSET,		/* write all 8K (including disklabel) */
    117 	NEWS_BOOT_BLOCK_BLOCKSIZE,
    118 	NEWS_BOOT_BLOCK_MAX_SIZE,
    119 	0,
    120 	BBINFO_BIG_ENDIAN,
    121 };
    122 
    123 static int
    124 newsmips_clearboot(ib_params *params)
    125 {
    126 
    127 	assert(params != NULL);
    128 
    129 	return (shared_bbinfo_clearboot(params, &newsmips_bbparams,
    130 	    news_copydisklabel));
    131 }
    132 
    133 static int
    134 newsmips_setboot(ib_params *params)
    135 {
    136 
    137 	assert(params != NULL);
    138 
    139 	return (shared_bbinfo_setboot(params, &newsmips_bbparams,
    140 	    news_copydisklabel));
    141 }
    142 
    143 
    144 /*
    145  * news_copydisklabel --
    146  *	copy disklabel from existing location on disk into bootstrap,
    147  *	as the primary bootstrap contains the disklabel.
    148  */
    149 static int
    150 news_copydisklabel(ib_params *params, struct bbinfo_params *bbparams,
    151 	uint8_t *bb)
    152 {
    153 	uint8_t	boot00[NEWS_BOOT_BLOCK_BLOCKSIZE];
    154 	ssize_t	rv;
    155 
    156 	assert(params != NULL);
    157 	assert(params->fsfd != -1);
    158 	assert(bbparams != NULL);
    159 	assert(bb != NULL);
    160 
    161 		/* Read label sector to copy disklabel from */
    162 	memset(boot00, 0, sizeof(boot00));
    163 	rv = pread(params->fsfd, boot00, sizeof(boot00), 0);
    164 	if (rv == -1) {
    165 		warn("Reading label sector from `%s'", params->filesystem);
    166 		return (0);
    167 	}
    168 		/* Copy disklabel */
    169 	memcpy(bb + NEWS_BOOT_BLOCK_LABELOFFSET,
    170 	    boot00 + NEWS_BOOT_BLOCK_LABELOFFSET,
    171 	    sizeof(boot00) - NEWS_BOOT_BLOCK_LABELOFFSET);
    172 
    173 	return (1);
    174 }
    175