1 /* $NetBSD: boot.c,v 1.15 2023/02/12 10:04:56 tsutsui Exp $ */
2 /*
3 * Copyright (c) 1994 Rolf Grossmann
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Rolf Grossmann.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/reboot.h>
34
35 #include <lib/libsa/stand.h>
36 #include <lib/libsa/loadfile.h>
37 #include <lib/libsa/dev_net.h>
38 #include <lib/libkern/libkern.h>
39
40 #include <machine/cpu.h> /* for NEXT_RAMBASE */
41
42 #include <next68k/next68k/nextrom.h>
43
44 #include "samachdep.h"
45
46 #define KERN_LOADADDR NEXT_RAMBASE
47
48 #define MON(type, off) (*(type *)((u_int) (mg) + off))
49
50 int devparse(const char *, int *, char *, char *, char *, char **);
51
52 /* the PROM overwrites MG_boot_arg :-( */
53 /* #define PROCESS_ARGS */
54
55 /*
56 * Boot device is derived from PROM provided information.
57 */
58
59 #define KNAMEN 100
60 char kernel[KNAMEN];
61 int entry_point; /* return value filled in by machdep_start */
62 int cpuspeed = MHZ_33; /* assume fastest 33 MHz for sanity */
63 int turbo;
64
65 volatile int qq;
66
67 int
main(char * boot_arg)68 main(char *boot_arg)
69 {
70 int fd;
71 u_long marks[MARK_MAX];
72 int dev;
73 char count, lun, part;
74 char machine;
75 char *file;
76 #ifdef PROCESS_ARGS
77 char *kernel_args = MON(char *, MG_boot_dev);
78 #endif
79
80 machine = MON(char, MG_machine_type);
81 if (machine == NeXT_TURBO_MONO ||
82 machine == NeXT_TURBO_COLOR ||
83 machine == NeXT_CUBE_TURBO) {
84 turbo = 1;
85 cpuspeed = MHZ_33;
86 } else {
87 turbo = 0;
88 cpuspeed = MHZ_25;
89 }
90
91 memset(marks, 0, sizeof(marks));
92 printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build);
93 printf(">> type %d, %sturbo\n", machine, turbo ? "" : "non-");
94 rtc_init();
95
96 try_bootp = 1;
97
98 #if 0
99 {
100 int i;
101 int *p = (int *)mg;
102 for (i = 0; i <= 896; ) {
103 printf ("%d: %x %x %x %x %x %x %x %x\n", i, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
104 p = &p[8];
105 i += 8*4;
106 }
107 }
108 printf("Press return to continue.\n");
109 getchar();
110 #endif
111
112 strcpy(kernel, boot_arg);
113 entry_point = 0;
114
115 for (;;) {
116 marks[MARK_START] = (u_long)KERN_LOADADDR;
117 fd = loadfile(kernel, marks, LOAD_KERNEL);
118 if (fd != -1) {
119 break;
120 }
121
122 printf("load of %s: %s\n", kernel, strerror(errno));
123 printf("boot: ");
124 kgets(kernel, sizeof(kernel));
125 if (kernel[0] == '\0')
126 return 0;
127
128 #ifdef PROCESS_ARGS
129 kernel_args = strchr(kernel, ')');
130 if (kernel_args == NULL)
131 kernel_args = kernel;
132 kernel_args = strchr(kernel_args, ' ');
133 if (kernel_args)
134 *kernel_args++ = '\0';
135 #endif
136 }
137
138 dev = 0;
139 count = lun = part = 0;
140 if (devparse(kernel, &dev, &count, &lun, &part, &file) == 0) {
141 char *p = (char *)marks[MARK_END];
142 strcpy (p, devsw[dev].dv_name);
143 MON(char *, MG_boot_dev) = p;
144 p += strlen (p) + 1;
145 snprintf (p, 1024, "(%d,%d,%d)", count, lun, part); /* XXX */
146 MON(char *, MG_boot_info) = p;
147 p += strlen (p) + 1;
148 snprintf (p, 1024, "%s", file); /* XXX */
149 MON(char *, MG_boot_file) = p;
150 #ifdef PROCESS_ARGS
151 p += strlen (p) + 1;
152 if (kernel_args)
153 strcpy (p, kernel_args);
154 else
155 *p = 0;
156 MON(char *, MG_boot_arg) = p;
157 #endif
158 }
159
160 *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR;
161 printf("entry 0x%lx esym 0x%lx\n",
162 marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR);
163 return marks[MARK_ENTRY];
164 }
165