1 /* $NetBSD: boot.c,v 1.1 2011/03/03 05:59:37 kiyohara Exp $ */
2
3 /*-
4 * Copyright (c) 2003 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/boot_flag.h>
72 #include <sys/exec.h>
73 #include <sys/exec_elf.h>
74
75 #include <machine/cpu.h>
76
77 #include "boot.h"
78 #include "cons.h"
79 #include "common.h"
80 #include "bootinfo.h"
81
82 char *kernelnames[] = {
83 "netbsd",
84 "netbsd.gz",
85 "onetbsd",
86 "onetbsd.gz",
87
88 NULL
89 };
90
91 extern u_long end; /* Boot loader code end address */
92 void start(void);
93
94 static int get_bsdbootname(char **, char **, int *);
95 static int parse_bootname(char *, int, char **, char **);
96 static void print_banner(void);
97
98 int main(void);
99
100 /*
101 * Extract NetBSD boot specification
102 */
103 static int
get_bsdbootname(char ** dev,char ** kern,int * howtop)104 get_bsdbootname(char **dev, char **kern, int *howtop)
105 {
106 int len;
107 char *ptr, *spec;
108 char c, namebuf[PATH_MAX];
109
110 spec = NULL;
111 len = 0;
112
113 memset(namebuf, 0, sizeof namebuf);
114 printf("Boot [" DEFBOOTDEV ":%s]: ", DEFKERNELNAME);
115
116 if (tgets(namebuf) == -1)
117 printf("\n");
118
119 ptr = namebuf;
120 while ((c = *ptr) != '\0') {
121 while (c == ' ')
122 c = *++ptr;
123 if (c == '\0')
124 break;
125 if (c == '-')
126 while ((c = *++ptr) && c != ' ')
127 BOOT_FLAG(c, *howtop);
128 else {
129 spec = ptr;
130 while ((c = *++ptr) && c != ' ')
131 ;
132 if (c)
133 *ptr++ = '\0';
134 len = strlen(spec);
135 }
136 }
137
138 if (len > 0)
139 if (parse_bootname(spec, len, dev, kern))
140 return 1;
141
142 DPRINTF(("dev = %s, kern = %s\n",
143 *dev ? *dev : "<NULL>",
144 *kern ? *kern : "<NULL>"));
145
146 return 0;
147 }
148
149 static int
parse_bootname(char * spec,int len,char ** dev,char ** kern)150 parse_bootname(char *spec, int len, char **dev, char **kern)
151 {
152 char *bootname, *ptr;
153
154 bootname = alloc(len + 1);
155 if (bootname == NULL)
156 return 1;
157 memcpy(bootname, spec, len);
158 bootname[len] = '\0';
159
160 if ((ptr = memchr(bootname, ':', len)) != NULL) {
161 /* "wdXX:kernel" */
162 *ptr = '\0';
163 *dev = bootname;
164 if (*++ptr)
165 *kern = ptr;
166 } else
167 /* "kernel" */
168 *kern = bootname;
169 return 0;
170 }
171
172 /*
173 * Print boot message.
174 */
175 static void
print_banner(void)176 print_banner(void)
177 {
178
179 printf("\n");
180 printf(">> %s " NETBSD_VERS " Bootloader, Revision %s [@%p]\n",
181 bootprog_name, bootprog_rev, (void*)&start);
182 }
183
184 int
main(void)185 main(void)
186 {
187 char **namep, *dev, *kernel, *bi_addr;
188 char bootpath[PATH_MAX];
189 int win;
190 u_long marks[MARK_MAX];
191 void (*entry)(u_int, char *);
192
193 struct btinfo_bootdev bi_bdev;
194 struct btinfo_bootpath bi_bpath;
195 struct btinfo_howto bi_howto;
196 int howto;
197
198 /* Initialize boot info early */
199 dev = NULL;
200 kernel = NULL;
201 howto = 0x0;
202 bi_addr = bi_init();
203
204 #if defined(SH4)
205 tmu_init();
206 #endif
207 cninit();
208
209 print_banner();
210
211 memset(marks, 0, sizeof(marks));
212 get_bsdbootname(&dev, &kernel, &howto);
213
214 if (kernel != NULL) {
215 DPRINTF(("kernel: %s\n", kernel));
216 kernelnames[0] = kernel;
217 kernelnames[1] = NULL;
218 } else {
219 DPRINTF(("kernel: NULL\n"));
220 }
221
222 win = 0;
223 DPRINTF(("Kernel names: %p\n", kernelnames));
224 for (namep = kernelnames, win = 0; (*namep != NULL) && !win; namep++) {
225 kernel = *namep;
226
227 bootpath[0] = '\0';
228
229 strcpy(bootpath, dev ? dev : DEFBOOTDEV);
230 strcat(bootpath, ":");
231 strcat(bootpath, kernel);
232
233 printf("Loading: %s", bootpath);
234 if (howto)
235 printf(" (howto 0x%x)", howto);
236 printf("\n");
237 win = (loadfile(bootpath, marks, LOAD_ALL) != -1);
238 }
239
240 if (win) {
241 if (dev != NULL)
242 strncpy(bi_bdev.bootdev, dev, BTINFO_BOOTDEV_LEN);
243 else
244 strncpy(bi_bdev.bootdev, DEFBOOTDEV,
245 BTINFO_BOOTDEV_LEN);
246 bi_add(&bi_bdev, BTINFO_BOOTDEV, sizeof(bi_bdev));
247
248 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN);
249 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
250
251 bi_howto.bi_howto = howto;
252 bi_add(&bi_howto, BTINFO_HOWTO, sizeof(bi_howto));
253
254 entry = (void *)marks[MARK_ENTRY];
255
256 DPRINTF(("Bootinfo @ 0x%lx\n", (u_long)bi_addr));
257 printf("Starting at 0x%lx\n\n", (u_long)entry);
258
259 delay(10000); /* XXXX: Wait output to console. */
260
261 (*entry)(BOOTINFO_MAGIC, bi_addr);
262 }
263
264 (void)printf("Boot failed! Rebooting...\n");
265 delay(20000);
266 return 0;
267 }
268
269 void
_rtt(void)270 _rtt(void)
271 {
272
273 /* XXXX */
274 }
275