1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: main.c,v 1.7 1998/09/26 01:31:10 msmith Exp $
*/
/*
* MD bootstrap main() and assorted miscellaneous
* commands.
*/
#include <stand.h>
#include <string.h>
#include <machine/bootinfo.h>
#include <sys/reboot.h>
#include "bootstrap.h"
#include "libi386/libi386.h"
#include "btxv86.h"
/* Arguments passed in from the boot1/boot2 loader */
static struct
{
u_int32_t howto;
u_int32_t bootdev;
u_int32_t res0;
u_int32_t res1;
u_int32_t res2;
u_int32_t bootinfo;
} *kargs;
struct bootinfo *initial_bootinfo;
struct arch_switch archsw; /* MI/MD interface boundary */
/* from vers.c */
extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
/* XXX debugging */
extern char end[];
void
main(void)
{
struct i386_devdesc currdev;
int i;
/* Pick up arguments */
kargs = (void *)__args;
initial_bootinfo = (struct bootinfo *)PTOV(kargs->bootinfo);
/*
* Initialise the heap as early as possible. Once this is done, malloc() is usable.
*
* XXX better to locate end of memory and use that
*/
setheap((void *)end, (void *)(end + (384 * 1024)));
/*
* XXX Chicken-and-egg problem; we want to have console output early, but some
* console attributes may depend on reading from eg. the boot device, which we
* can't do yet.
*
* We can use printf() etc. once this is done.
* If the previous boot stage has requested a serial console, prefer that.
*/
if (kargs->howto & RB_SERIAL)
setenv("console", "comconsole", 1);
cons_probe();
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++)
if (devsw[i]->dv_init != NULL)
(devsw[i]->dv_init)();
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
printf("memory: %d/%dkB\n", getbasemem(), getextmem());
#if 0
printf("diskbuf at %p, %d sectors\n", &diskbuf, diskbuf_size);
printf("using %d bytes of stack at %p\n", (&stacktop - &stackbase), &stacktop);
#endif
/* We're booting from a BIOS disk, try to spiff this */
currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
currdev.d_type = currdev.d_dev->dv_type;
currdev.d_kind.biosdisk.unit = 0; /* XXX wrong, need to get from bootinfo etc. */
currdev.d_kind.biosdisk.slice = -1; /* XXX should be able to detect this, default to autoprobe */
currdev.d_kind.biosdisk.partition = 0; /* default to 'a' */
/* Create i386-specific variables */
env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev), i386_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */
archsw.arch_autoload = i386_autoload;
archsw.arch_getdev = i386_getdev;
archsw.arch_copyin = i386_copyin;
archsw.arch_copyout = i386_copyout;
archsw.arch_readin = i386_readin;
/*
* XXX should these be in the MI source?
*/
#if 0
legacy_config(); /* read old /boot.config file */
#endif
interact(); /* doesn't return */
}
COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
static int
command_reboot(int argc, char *argv[])
{
printf("Rebooting...\n");
delay(1000000);
__exit(0);
}
/* provide this for panic, as it's not in the startup code */
void
exit(int code)
{
__exit(code);
}
#if 0 /* XXX learn to ask BTX */
COMMAND_SET(stack, "stack", "show stack usage", command_stack);
extern char stackbase, stacktop;
static int
command_stack(int argc, char *argv[])
{
char *cp;
for (cp = &stackbase; cp < &stacktop; cp++)
if (*cp != 0)
break;
printf("%d bytes of stack used\n", &stacktop - cp);
return(CMD_OK);
}
#endif
COMMAND_SET(heap, "heap", "show heap usage", command_heap);
static int
command_heap(int argc, char *argv[])
{
mallocstats();
printf("heap base at %p, top at %p", end, sbrk(0));
return(CMD_OK);
}
|
