1 /* $NetBSD: boot.c,v 1.33 2016/06/11 06:26:06 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
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 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)boot.c 8.1 (Berkeley) 6/10/93
35 */
36
37 #include <lib/libsa/stand.h>
38 #include <lib/libkern/libkern.h>
39 #include <lib/libsa/loadfile.h>
40
41 #include <sys/param.h>
42 #include <sys/exec.h>
43 #include <sys/exec_ecoff.h>
44
45 #include <machine/autoconf.h>
46 #include <machine/prom.h>
47 #include <machine/rpb.h>
48
49 #include <machine/pte.h>
50
51 #include "common.h"
52
53 #if !defined(UNIFIED_BOOTBLOCK) && !defined(SECONDARY_BOOTBLOCK)
54 #error not UNIFIED_BOOTBLOCK and not SECONDARY_BOOTBLOCK
55 #endif
56
57 char boot_file[128];
58 char boot_flags[128];
59
60 struct bootinfo_v1 bootinfo_v1;
61
62 paddr_t ffp_save, ptbr_save;
63
64 int debug;
65
66 char *kernelnames[] = {
67 "netbsd", "netbsd.gz",
68 "netbsd.bak", "netbsd.bak.gz",
69 "netbsd.old", "netbsd.old.gz",
70 "onetbsd", "onetbsd.gz",
71 "netbsd.alpha", "netbsd.alpha.gz",
72 NULL
73 };
74
75 void
76 #if defined(UNIFIED_BOOTBLOCK)
main(void)77 main(void)
78 #else /* defined(SECONDARY_BOOTBLOCK) */
79 main(long fd)
80 #endif
81 {
82 char *name, **namep;
83 u_long marks[MARK_MAX];
84 u_int64_t entry;
85 int win, loadflag;
86
87 /* Init prom callback vector. */
88 init_prom_calls();
89
90 /* print a banner */
91 printf("\n");
92 printf("NetBSD/alpha " NETBSD_VERS " " BOOT_TYPE_NAME " Bootstrap, Revision %s\n",
93 bootprog_rev);
94 printf("\n");
95
96 /* set up the booted device descriptor */
97 #if defined(UNIFIED_BOOTBLOCK)
98 if (!booted_dev_open()) {
99 printf("Boot device (%s) open failed.\n",
100 booted_dev_name[0] ? booted_dev_name : "unknown");
101 goto fail;
102 }
103 #else /* defined(SECONDARY_BOOTBLOCK) */
104 booted_dev_setfd(fd);
105 #endif
106
107 /* switch to OSF pal code. */
108 OSFpal();
109
110 printf("\n");
111
112 prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));
113 prom_getenv(PROM_E_BOOTED_OSFLAGS, boot_flags, sizeof(boot_flags));
114
115 if (boot_file[0] != 0)
116 (void)printf("Boot file: %s\n", boot_file);
117 (void)printf("Boot flags: %s\n", boot_flags);
118
119 if (strchr(boot_flags, 'i') || strchr(boot_flags, 'I')) {
120 printf("Boot file: ");
121 kgets(boot_file, sizeof(boot_file));
122 }
123
124 #ifdef NO_LOAD_BACKWARDS
125 loadflag = LOAD_KERNEL & ~LOAD_BACKWARDS;
126 #else
127 loadflag = LOAD_KERNEL;
128 #endif
129
130 memset(marks, 0, sizeof marks);
131 if (boot_file[0] != '\0') {
132 name = boot_file;
133 win = loadfile(name, marks, loadflag) == 0;
134 } else {
135 name = NULL; /* XXX gcc -Wuninitialized */
136 for (namep = kernelnames, win = 0; *namep != NULL && !win;
137 namep++) {
138 name = *namep;
139 win = loadfile(name, marks, loadflag) == 0;
140 }
141 }
142
143 entry = marks[MARK_ENTRY];
144 booted_dev_close();
145 printf("\n");
146 if (!win)
147 goto fail;
148
149 /*
150 * Fill in the bootinfo for the kernel.
151 */
152 memset(&bootinfo_v1, 0, sizeof(bootinfo_v1));
153 bootinfo_v1.ssym = marks[MARK_SYM];
154 bootinfo_v1.esym = marks[MARK_END];
155 memcpy(bootinfo_v1.booted_kernel, name,
156 sizeof(bootinfo_v1.booted_kernel));
157 memcpy(bootinfo_v1.boot_flags, boot_flags,
158 sizeof(bootinfo_v1.boot_flags));
159 bootinfo_v1.hwrpb = (void *)HWRPB_ADDR;
160 bootinfo_v1.hwrpbsize = ((struct rpb *)HWRPB_ADDR)->rpb_size;
161 bootinfo_v1.cngetc = NULL;
162 bootinfo_v1.cnputc = NULL;
163 bootinfo_v1.cnpollc = NULL;
164
165 (void)printf("Entering %s at 0x%lx...\n", name, entry);
166 alpha_pal_imb();
167 (*(void (*)(u_int64_t, u_int64_t, u_int64_t, void *, u_int64_t,
168 u_int64_t))entry)(ffp_save, ptbr_save, BOOTINFO_MAGIC,
169 &bootinfo_v1, 1, 0);
170
171 (void)printf("KERNEL RETURNED!\n");
172
173 fail:
174 (void)printf("Boot failed! Halting...\n");
175 halt();
176 }
177