1 /* $NetBSD: hppa.c,v 1.2 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 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 1.2 2019/05/07 04:35:31 thorpej 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 .name = "hppa",
70 .setboot = hppa_setboot,
71 .clearboot = hppa_clearboot,
72 .editboot = no_editboot,
73 };
74
75 static int
hppa_clearboot(ib_params * params)76 hppa_clearboot(ib_params *params)
77 {
78 char bb[HPPA_BOOT_BLOCK_SIZE];
79 int retval, eol;
80 ssize_t rv;
81
82 assert(params != NULL);
83 assert(params->fsfd != -1);
84 assert(params->filesystem != NULL);
85
86 retval = 0;
87
88 /* read disklabel on the target disk */
89 rv = pread(params->fsfd, bb, sizeof bb, 0);
90 if (rv == -1) {
91 warn("Reading `%s'", params->filesystem);
92 goto done;
93 } else if (rv != sizeof bb) {
94 warnx("Reading `%s': short read", params->filesystem);
95 goto done;
96 }
97
98 /* clear header */
99 memset(bb, 0, HPPA_LABELOFFSET);
100 eol = HPPA_LABELOFFSET + HPPA_LABELSIZE;
101 memset(&bb[eol], 0, sizeof bb - eol);
102
103 if (params->flags & IB_VERBOSE) {
104 printf("%slearing bootstrap\n",
105 (params->flags & IB_NOWRITE) ? "Not c" : "C");
106 }
107 if (params->flags & IB_NOWRITE) {
108 retval = 1;
109 goto done;
110 }
111
112 rv = pwrite(params->fsfd, bb, sizeof bb, 0);
113 if (rv == -1) {
114 warn("Writing `%s'", params->filesystem);
115 goto done;
116 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
117 warnx("Writing `%s': short write", params->filesystem);
118 goto done;
119 } else
120 retval = 1;
121
122 done:
123 return (retval);
124 }
125
126 static int
hppa_setboot(ib_params * params)127 hppa_setboot(ib_params *params)
128 {
129 struct stat bootstrapsb;
130 char bb[HPPA_BOOT_BLOCK_SIZE];
131 struct {
132 char l_off[HPPA_LABELOFFSET];
133 struct disklabel l;
134 char l_pad[HPPA_BOOT_BLOCK_SIZE
135 - HPPA_LABELOFFSET - sizeof(struct disklabel)];
136 } label;
137 unsigned int secsize, npart;
138 int retval;
139 ssize_t rv;
140
141 assert(params != NULL);
142 assert(params->fsfd != -1);
143 assert(params->filesystem != NULL);
144 assert(params->s1fd != -1);
145 assert(params->stage1 != NULL);
146
147 retval = 0;
148
149 /* read disklabel on the target disk */
150 rv = pread(params->fsfd, &label, HPPA_BOOT_BLOCK_SIZE, 0);
151 if (rv == -1) {
152 warn("Reading `%s'", params->filesystem);
153 goto done;
154 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
155 warnx("Reading `%s': short read", params->filesystem);
156 goto done;
157 }
158
159 if (fstat(params->s1fd, &bootstrapsb) == -1) {
160 warn("Examining `%s'", params->stage1);
161 goto done;
162 }
163 if (!S_ISREG(bootstrapsb.st_mode)) {
164 warnx("`%s' must be a regular file", params->stage1);
165 goto done;
166 }
167
168 /* check if valid disklabel exists */
169 secsize = be32toh(label.l.d_secsize);
170 npart = be16toh(label.l.d_npartitions);
171 if (label.l.d_magic != htobe32(DISKMAGIC) ||
172 label.l.d_magic2 != htobe32(DISKMAGIC) ||
173 secsize == 0 || secsize & (secsize - 1) ||
174 npart > MAXMAXPARTITIONS) {
175 warnx("No disklabel in `%s'", params->filesystem);
176
177 /* then check if boot partition exists */
178 } else if (npart < 1 || label.l.d_partitions[0].p_size == 0) {
179 warnx("Partition `a' doesn't exist in %s", params->filesystem);
180
181 /* check if the boot partition is below 2GB */
182 } else if (be32toh(label.l.d_partitions[0].p_offset) +
183 be32toh(label.l.d_partitions[0].p_size) >
184 ((unsigned)2*1024*1024*1024) / secsize) {
185 warnx("Partition `a' of `%s' exceeds 2GB boundary.",
186 params->filesystem);
187 warnx("It won't boot since hppa PDC can handle only 2GB.");
188 goto done;
189 }
190
191 /* read boot loader */
192 memset(&bb, 0, sizeof bb);
193 rv = read(params->s1fd, &bb, sizeof bb);
194 if (rv == -1) {
195 warn("Reading `%s'", params->stage1);
196 goto done;
197 }
198 /* then, overwrite disklabel */
199 memcpy(&bb[HPPA_LABELOFFSET], &label.l, HPPA_LABELSIZE);
200
201 if (params->flags & IB_VERBOSE) {
202 printf("Bootstrap start sector: %#x\n", 0);
203 printf("Bootstrap byte count: %#zx\n", rv);
204 printf("%sriting bootstrap\n",
205 (params->flags & IB_NOWRITE) ? "Not w" : "W");
206 }
207 if (params->flags & IB_NOWRITE) {
208 retval = 1;
209 goto done;
210 }
211
212 /* write boot loader and disklabel into the target disk */
213 rv = pwrite(params->fsfd, &bb, HPPA_BOOT_BLOCK_SIZE, 0);
214 if (rv == -1) {
215 warn("Writing `%s'", params->filesystem);
216 goto done;
217 } else if (rv != HPPA_BOOT_BLOCK_SIZE) {
218 warnx("Writing `%s': short write", params->filesystem);
219 goto done;
220 } else
221 retval = 1;
222
223 done:
224 return (retval);
225 }
226