1 /* $OpenBSD: sparc64_installboot.c,v 1.11 2022/09/05 11:12:20 kn Exp $ */
2
3 /*
4 * Copyright (c) 2012, 2013 Joel Sing <jsing@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/param.h> /* DEV_BSIZE */
20 #include <sys/stat.h>
21
22 #include <err.h>
23 #include <fcntl.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <unistd.h>
28
29 #include <ufs/ffs/fs.h>
30
31 #include "installboot.h"
32
33 char *bootldr;
34
35 char *blkstore;
36 char *ldrstore;
37 size_t blksize;
38 size_t ldrsize;
39
40 void
md_init(void)41 md_init(void)
42 {
43 stages = 2;
44 stage1 = "/usr/mdec/bootblk";
45 stage2 = "/usr/mdec/ofwboot";
46
47 bootldr = "/ofwboot";
48 }
49
50 void
md_loadboot(void)51 md_loadboot(void)
52 {
53 struct stat sb;
54 size_t blocks;
55 int fd;
56
57 /* Load first-stage boot block. */
58 if ((fd = open(stage1, O_RDONLY)) == -1)
59 err(1, "open");
60 if (fstat(fd, &sb) == -1)
61 err(1, "fstat");
62 blocks = howmany((size_t)sb.st_size, DEV_BSIZE);
63 blksize = blocks * DEV_BSIZE;
64 if (verbose)
65 fprintf(stderr, "boot block is %zu bytes "
66 "(%zu blocks @ %u bytes = %zu bytes)\n",
67 (ssize_t)sb.st_size, blocks, DEV_BSIZE, blksize);
68 if (blksize > SBSIZE - DEV_BSIZE)
69 errx(1, "boot blocks too big (%zu > %d)",
70 blksize, SBSIZE - DEV_BSIZE);
71 blkstore = calloc(1, blksize);
72 if (blkstore == NULL)
73 err(1, "calloc");
74 if (read(fd, blkstore, sb.st_size) != (ssize_t)sb.st_size)
75 err(1, "read");
76 close(fd);
77
78 /* Load second-stage boot loader. */
79 if ((fd = open(stage2, O_RDONLY)) == -1)
80 err(1, "open");
81 if (fstat(fd, &sb) == -1)
82 err(1, "stat");
83 ldrsize = sb.st_size;
84 ldrstore = malloc(ldrsize);
85 if (ldrstore == NULL)
86 err(1, "malloc");
87 if (read(fd, ldrstore, ldrsize) != (ssize_t)sb.st_size)
88 err(1, "read");
89 close(fd);
90 }
91
92 void
md_prepareboot(int devfd,char * dev)93 md_prepareboot(int devfd, char *dev)
94 {
95 }
96
97 void
md_installboot(int devfd,char * dev)98 md_installboot(int devfd, char *dev)
99 {
100 static int prefixed = 0;
101
102 /* XXX - is this necessary? */
103 sync();
104
105 /*
106 * sr_install_bootblk() calls md_installboot() for every softraid chunk
107 * but the path must be prefixed only once.
108 */
109 if (!prefixed++)
110 bootldr = fileprefix(root, bootldr);
111 if (bootldr == NULL)
112 exit(1);
113 if (verbose)
114 fprintf(stderr, "%s %s to %s\n",
115 (nowrite ? "would copy" : "copying"), stage2, bootldr);
116 if (!nowrite)
117 if (filecopy(stage2, bootldr) == -1)
118 exit(1);
119
120 /* Write bootblock into the superblock. */
121 if (verbose)
122 fprintf(stderr, "%s boot block to disk %s\n",
123 (nowrite ? "would write" : "writing"), dev);
124 if (nowrite)
125 return;
126 if (pwrite(devfd, blkstore, blksize, DEV_BSIZE) != (ssize_t)blksize)
127 err(1, "pwrite");
128 }
129