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main.c (38764) main.c (39178)
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $Id: main.c,v 1.2 1998/08/31 21:10:43 msmith Exp $
26 * $Id: main.c,v 1.3 1998/09/03 02:10:09 msmith Exp $
27 */
28
29/*
30 * MD bootstrap main() and assorted miscellaneous
31 * commands.
32 */
33
34#include <stand.h>
35#include <string.h>
36
37#include "bootstrap.h"
38#include "libi386/libi386.h"
39
40extern int boot_biosdev; /* from runtime startup */
41
42struct arch_switch archsw; /* MI/MD interface boundary */
43
44/* from vers.c */
45extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
46
47/* XXX debugging */
48#include "libi386/crt/diskbuf.h"
49extern char stackbase, stacktop;
50extern char end[];
51
52void
53main(void)
54{
55 struct i386_devdesc currdev;
56 int i;
27 */
28
29/*
30 * MD bootstrap main() and assorted miscellaneous
31 * commands.
32 */
33
34#include <stand.h>
35#include <string.h>
36
37#include "bootstrap.h"
38#include "libi386/libi386.h"
39
40extern int boot_biosdev; /* from runtime startup */
41
42struct arch_switch archsw; /* MI/MD interface boundary */
43
44/* from vers.c */
45extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
46
47/* XXX debugging */
48#include "libi386/crt/diskbuf.h"
49extern char stackbase, stacktop;
50extern char end[];
51
52void
53main(void)
54{
55 struct i386_devdesc currdev;
56 int i;
57
57
58 /*
59 * Initialise the heap as early as possible. Once this is done, alloc() is usable.
60 * The stack is buried inside us, so this is safe
61 */
62 setheap((void *)end, (void *)(end + 0x80000));
63
64 /*
65 * XXX Chicken-and-egg problem; we want to have console output early, but some
66 * console attributes may depend on reading from eg. the boot device, which we
67 * can't do yet.
68 *
69 * We can use printf() etc. once this is done.
70 */
71 cons_probe();
72
73 /*
74 * March through the device switch probing for things.
75 */
76 for (i = 0; devsw[i] != NULL; i++)
77 if (devsw[i]->dv_init != NULL)
78 (devsw[i]->dv_init)();
79
80 printf("\n");
81 printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
82 printf("(%s, %s)\n", bootprog_maker, bootprog_date);
83 printf("memory: %d/%dkB\n", getbasemem(), getextmem());
84#if 0
85 printf("diskbuf at %p, %d sectors\n", &diskbuf, diskbuf_size);
86 printf("using %d bytes of stack at %p\n", (&stacktop - &stackbase), &stacktop);
87#endif
88
89 /* We're booting from a BIOS disk, try to spiff this */
90 currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
91 currdev.d_type = currdev.d_dev->dv_type;
92 currdev.d_kind.biosdisk.unit = boot_biosdev;
93 currdev.d_kind.biosdisk.slice = -1; /* XXX should be able to detect this, default to autoprobe */
94 currdev.d_kind.biosdisk.partition = 0; /* default to 'a' */
95
96 /* Create i386-specific variables */
97
98 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev), i386_setcurrdev, env_nounset);
99 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset, env_nounset);
100 setenv("LINES", "24", 1); /* optional */
101
102 archsw.arch_autoload = i386_autoload;
103 archsw.arch_getdev = i386_getdev;
104 archsw.arch_copyin = i386_copyin;
105 archsw.arch_copyout = i386_copyout;
106 archsw.arch_readin = i386_readin;
107 /*
108 * XXX should these be in the MI source?
109 */
110#if 0
111 legacy_config(); /* read old /boot.config file */
112#endif
113 interact(); /* doesn't return */
114}
115
116COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
117
118static int
119command_reboot(int argc, char *argv[])
120{
121
122 printf("Rebooting...\n");
123 delay(1000000);
124 reboot();
125 /* Note: we shouldn't get to this point! */
126 panic("Reboot failed!");
127 exit(0);
128}
129
130COMMAND_SET(stack, "stack", "show stack usage", command_stack);
131
132static int
133command_stack(int argc, char *argv[])
134{
135 char *cp;
136
137 for (cp = &stackbase; cp < &stacktop; cp++)
138 if (*cp != 0)
139 break;
140
141 printf("%d bytes of stack used\n", &stacktop - cp);
142 return(CMD_OK);
143}
144
145COMMAND_SET(heap, "heap", "show heap usage", command_heap);
146
147static int
148command_heap(int argc, char *argv[])
149{
150 printf("heap base at %p, top at %p, used %d\n", end, sbrk(0), sbrk(0) - end);
151 return(CMD_OK);
152}
58 /*
59 * Initialise the heap as early as possible. Once this is done, alloc() is usable.
60 * The stack is buried inside us, so this is safe
61 */
62 setheap((void *)end, (void *)(end + 0x80000));
63
64 /*
65 * XXX Chicken-and-egg problem; we want to have console output early, but some
66 * console attributes may depend on reading from eg. the boot device, which we
67 * can't do yet.
68 *
69 * We can use printf() etc. once this is done.
70 */
71 cons_probe();
72
73 /*
74 * March through the device switch probing for things.
75 */
76 for (i = 0; devsw[i] != NULL; i++)
77 if (devsw[i]->dv_init != NULL)
78 (devsw[i]->dv_init)();
79
80 printf("\n");
81 printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
82 printf("(%s, %s)\n", bootprog_maker, bootprog_date);
83 printf("memory: %d/%dkB\n", getbasemem(), getextmem());
84#if 0
85 printf("diskbuf at %p, %d sectors\n", &diskbuf, diskbuf_size);
86 printf("using %d bytes of stack at %p\n", (&stacktop - &stackbase), &stacktop);
87#endif
88
89 /* We're booting from a BIOS disk, try to spiff this */
90 currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
91 currdev.d_type = currdev.d_dev->dv_type;
92 currdev.d_kind.biosdisk.unit = boot_biosdev;
93 currdev.d_kind.biosdisk.slice = -1; /* XXX should be able to detect this, default to autoprobe */
94 currdev.d_kind.biosdisk.partition = 0; /* default to 'a' */
95
96 /* Create i386-specific variables */
97
98 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev), i386_setcurrdev, env_nounset);
99 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset, env_nounset);
100 setenv("LINES", "24", 1); /* optional */
101
102 archsw.arch_autoload = i386_autoload;
103 archsw.arch_getdev = i386_getdev;
104 archsw.arch_copyin = i386_copyin;
105 archsw.arch_copyout = i386_copyout;
106 archsw.arch_readin = i386_readin;
107 /*
108 * XXX should these be in the MI source?
109 */
110#if 0
111 legacy_config(); /* read old /boot.config file */
112#endif
113 interact(); /* doesn't return */
114}
115
116COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
117
118static int
119command_reboot(int argc, char *argv[])
120{
121
122 printf("Rebooting...\n");
123 delay(1000000);
124 reboot();
125 /* Note: we shouldn't get to this point! */
126 panic("Reboot failed!");
127 exit(0);
128}
129
130COMMAND_SET(stack, "stack", "show stack usage", command_stack);
131
132static int
133command_stack(int argc, char *argv[])
134{
135 char *cp;
136
137 for (cp = &stackbase; cp < &stacktop; cp++)
138 if (*cp != 0)
139 break;
140
141 printf("%d bytes of stack used\n", &stacktop - cp);
142 return(CMD_OK);
143}
144
145COMMAND_SET(heap, "heap", "show heap usage", command_heap);
146
147static int
148command_heap(int argc, char *argv[])
149{
150 printf("heap base at %p, top at %p, used %d\n", end, sbrk(0), sbrk(0) - end);
151 return(CMD_OK);
152}