1 /* $NetBSD: hppa.c,v 1.1 2014/02/24 07:23:44 skrll 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 #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: hppa.c,v 1.1 2014/02/24 07:23:44 skrll Exp $");
39 #endif /* !__lint */
40
41 /* We need the target disklabel.h, not the hosts one..... */
42 #ifdef HAVE_NBTOOL_CONFIG_H
43 #include "nbtool_config.h"
44 #include <nbinclude/sys/disklabel.h>
45 #else
46 #include <sys/disklabel.h>
47 #endif
48 #include <sys/param.h>
49 #include <sys/stat.h>
50
51 #include <assert.h>
52 #include <err.h>
53 #include <stddef.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #include <unistd.h>
58
59 #include "installboot.h"
60
61 #define HPPA_LABELOFFSET 512
62 #define HPPA_LABELSIZE 404 /* reserve 16 partitions */
63 #define HPPA_BOOT_BLOCK_SIZE 8192
64
65 static int hppa_clearboot(ib_params *);
66 static int hppa_setboot(ib_params *);
67
68 struct ib_mach ib_mach_hppa =
69 { "hppa", hppa_setboot, hppa_clearboot, no_editboot, 0};
70
71 static int
hppa_clearboot(ib_params * params)72 hppa_clearboot(ib_params *params)
73 {
74 char bb[HPPA_BOOT_BLOCK_SIZE];
75 int retval, eol;
76 ssize_t rv;
77
78 assert(params != NULL);
79 assert(params->fsfd != -1);
80 assert(params->filesystem != NULL);
81
82 retval = 0;
83
84 /* read disklabel on the target disk */
85 rv = pread(params->fsfd, bb, sizeof bb, 0);
86 if (rv == -1) {
87 warn("Reading `%s'", params->filesystem);
88 goto done;
89 } else if (rv != sizeof bb) {
90 warnx("Reading `%s': short read", params->filesystem);
91 goto done;
92 }
93
94 /* clear header */
95 memset(bb, 0, HPPA_LABELOFFSET);
96 eol = HPPA_LABELOFFSET + HPPA_LABELSIZE;
97 memset(&bb[eol], 0, sizeof bb - eol);
98
99 if (params->flags & IB_VERBOSE) {
100 printf("%slearing bootstrap\n",
101 (params->flags & IB_NOWRITE) ? "Not c" : "C");
102 }
103 if (params->flags & IB_NOWRITE) {
104 retval = 1;
105 goto done;
106 }
107
108 rv = pwrite(params->fsfd, bb, sizeof bb, 0);
109 if (rv == -1) {
110 warn("Writing `%s'", params->filesystem);
111 goto done;
112 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
113 warnx("Writing `%s': short write", params->filesystem);
114 goto done;
115 } else
116 retval = 1;
117
118 done:
119 return (retval);
120 }
121
122 static int
hppa_setboot(ib_params * params)123 hppa_setboot(ib_params *params)
124 {
125 struct stat bootstrapsb;
126 char bb[HPPA_BOOT_BLOCK_SIZE];
127 struct {
128 char l_off[HPPA_LABELOFFSET];
129 struct disklabel l;
130 char l_pad[HPPA_BOOT_BLOCK_SIZE
131 - HPPA_LABELOFFSET - sizeof(struct disklabel)];
132 } label;
133 unsigned int secsize, npart;
134 int retval;
135 ssize_t rv;
136
137 assert(params != NULL);
138 assert(params->fsfd != -1);
139 assert(params->filesystem != NULL);
140 assert(params->s1fd != -1);
141 assert(params->stage1 != NULL);
142
143 retval = 0;
144
145 /* read disklabel on the target disk */
146 rv = pread(params->fsfd, &label, HPPA_BOOT_BLOCK_SIZE, 0);
147 if (rv == -1) {
148 warn("Reading `%s'", params->filesystem);
149 goto done;
150 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
151 warnx("Reading `%s': short read", params->filesystem);
152 goto done;
153 }
154
155 if (fstat(params->s1fd, &bootstrapsb) == -1) {
156 warn("Examining `%s'", params->stage1);
157 goto done;
158 }
159 if (!S_ISREG(bootstrapsb.st_mode)) {
160 warnx("`%s' must be a regular file", params->stage1);
161 goto done;
162 }
163
164 /* check if valid disklabel exists */
165 secsize = be32toh(label.l.d_secsize);
166 npart = be16toh(label.l.d_npartitions);
167 if (label.l.d_magic != htobe32(DISKMAGIC) ||
168 label.l.d_magic2 != htobe32(DISKMAGIC) ||
169 secsize == 0 || secsize & (secsize - 1) ||
170 npart > MAXMAXPARTITIONS) {
171 warnx("No disklabel in `%s'", params->filesystem);
172
173 /* then check if boot partition exists */
174 } else if (npart < 1 || label.l.d_partitions[0].p_size == 0) {
175 warnx("Partition `a' doesn't exist in %s", params->filesystem);
176
177 /* check if the boot partition is below 2GB */
178 } else if (be32toh(label.l.d_partitions[0].p_offset) +
179 be32toh(label.l.d_partitions[0].p_size) >
180 ((unsigned)2*1024*1024*1024) / secsize) {
181 warnx("Partition `a' of `%s' exceeds 2GB boundary.",
182 params->filesystem);
183 warnx("It won't boot since hppa PDC can handle only 2GB.");
184 goto done;
185 }
186
187 /* read boot loader */
188 memset(&bb, 0, sizeof bb);
189 rv = read(params->s1fd, &bb, sizeof bb);
190 if (rv == -1) {
191 warn("Reading `%s'", params->stage1);
192 goto done;
193 }
194 /* then, overwrite disklabel */
195 memcpy(&bb[HPPA_LABELOFFSET], &label.l, HPPA_LABELSIZE);
196
197 if (params->flags & IB_VERBOSE) {
198 printf("Bootstrap start sector: %#x\n", 0);
199 printf("Bootstrap byte count: %#zx\n", rv);
200 printf("%sriting bootstrap\n",
201 (params->flags & IB_NOWRITE) ? "Not w" : "W");
202 }
203 if (params->flags & IB_NOWRITE) {
204 retval = 1;
205 goto done;
206 }
207
208 /* write boot loader and disklabel into the target disk */
209 rv = pwrite(params->fsfd, &bb, HPPA_BOOT_BLOCK_SIZE, 0);
210 if (rv == -1) {
211 warn("Writing `%s'", params->filesystem);
212 goto done;
213 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
214 warnx("Writing `%s': short write", params->filesystem);
215 goto done;
216 } else
217 retval = 1;
218
219 done:
220 return (retval);
221 }
222