1 /* $NetBSD: boot.c,v 1.11 2024/03/06 19:48:53 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jonathan Stone, Michael Hitch, Simon Burge and Wayne Knowles.
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 /*
33 * Copyright (c) 1992, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * This code is derived from software contributed to Berkeley by
37 * Ralph Campbell.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * @(#)boot.c 8.1 (Berkeley) 6/10/93
64 */
65
66 #include <lib/libsa/stand.h>
67 #include <lib/libsa/loadfile.h>
68 #include <lib/libkern/libkern.h>
69
70 #include <sys/param.h>
71 #include <sys/exec.h>
72 #include <sys/exec_elf.h>
73
74 #include <machine/prom.h>
75
76 #include "common.h"
77 #include "bootinfo.h"
78
79 /*
80 * We won't go overboard with gzip'd kernel names. After all we can
81 * still boot a gzip'd kernel called "netbsd.mipsco" - it doesn't need
82 * the .gz suffix.
83 */
84 char *kernelnames[] = {
85 "netbsd",
86 "netbsd.gz",
87 "netbsd.bak",
88 "netbsd.old",
89 "netbsd.mipsco",
90 "netbsd.elf",
91 NULL
92 };
93
94
95 static char *devsplit(char *, char *);
96 int main(int, char **);
97
98 /*
99 * This gets arguments from the first stage boot loader, calls PROM routines
100 * to open and load the program to boot, and then transfers execution to
101 * that new program.
102 */
103 int
main(int argc,char ** argv)104 main(int argc, char **argv)
105 {
106 char *name, **namep, *dev, *kernel;
107 char bootname[PATH_MAX], bootpath[PATH_MAX];
108 int win;
109 u_long marks[MARK_MAX];
110 struct btinfo_symtab bi_syms;
111 struct btinfo_bootpath bi_bpath;
112 extern void prom_init(void);
113 void (*entry)(int, char **, char **, u_int, char *);
114
115 prom_init();
116
117 /* print a banner */
118 printf("\n");
119 printf("NetBSD/mipsco " NETBSD_VERS " " BOOT_TYPE_NAME
120 " Bootstrap, Revision %s\n", bootprog_rev);
121
122 /* initialise bootinfo structure early */
123 bi_init(BOOTINFO_ADDR);
124
125 dev = name = NULL;
126 if (argc > 1) {
127 kernel = devsplit(argv[1], bootname);
128 if (*bootname) {
129 dev = bootname;
130 if (*kernel)
131 name = argv[1];
132 ++argv;
133 --argc;
134 }
135
136 } else
137 kernel = NULL;
138
139 if (dev == NULL) {
140 (void) devsplit(argv[0], bootname);
141 dev = bootname;
142 }
143
144 memset(marks, 0, sizeof marks);
145 if (name != NULL)
146 win = (loadfile(name, marks, LOAD_KERNEL) == 0);
147 else {
148 win = 0;
149 for (namep = kernelnames, win = 0; *namep != NULL && !win;
150 namep++) {
151 kernel = *namep;
152 strcpy(bootpath, dev);
153 strcat(bootpath, kernel);
154 printf("Loading: %s\n", bootpath);
155 win = (loadfile(bootpath, marks, LOAD_ALL) != -1);
156 if (win) {
157 name = bootpath;
158 }
159 }
160 }
161 if (!win || !kernel)
162 goto fail;
163
164 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN);
165 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
166
167 entry = (void *) marks[MARK_ENTRY];
168 bi_syms.nsym = marks[MARK_NSYM];
169 bi_syms.ssym = marks[MARK_SYM];
170 bi_syms.esym = marks[MARK_END];
171 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms));
172
173 printf("Starting at 0x%x\n\n", (u_int)entry);
174
175 (*entry)(argc, argv, NULL, BOOTINFO_MAGIC, (char *)BOOTINFO_ADDR);
176
177 (void)printf("KERNEL RETURNED!\n");
178
179 fail:
180 (void)printf("Boot failed! Halting...\n");
181 return (0);
182 }
183
184 /*
185 * strip out device name and kernel name
186 */
187 static char *
devsplit(char * fname,char * devname)188 devsplit(char *fname, char *devname)
189 {
190 char *src, *dst;
191
192 dst = devname;
193 for (src = fname; *src;/**/)
194 if ((*dst++ = *src++) == ')') {
195 *dst = (char) 0;
196 return src;
197 }
198 *devname = (char) 0;
199 return fname;
200 }
201