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 * $FreeBSD: head/sys/boot/pc98/loader/main.c 50477 1999-08-28 01:08:13Z peter $
| 26 * $FreeBSD: head/sys/boot/pc98/loader/main.c 53218 1999-11-16 11:59:19Z nyan $
|
27 */
28
29/*
30 * MD bootstrap main() and assorted miscellaneous
31 * commands.
32 */
33
34#include <stand.h>
35#include <string.h>
36#include <machine/bootinfo.h>
37#include <sys/reboot.h>
38
39#include "bootstrap.h"
40#include "libi386/libi386.h"
41#include "btxv86.h"
42
43/* Arguments passed in from the boot1/boot2 loader */
44static struct
45{
46 u_int32_t howto;
47 u_int32_t bootdev;
48 u_int32_t res0;
49 u_int32_t res1;
50 u_int32_t res2;
51 u_int32_t bootinfo;
52} *kargs;
53
54static u_int32_t initial_howto;
55static u_int32_t initial_bootdev;
56#ifdef PC98
57struct bootinfo *initial_bootinfo;
58#else
59static struct bootinfo *initial_bootinfo;
60#endif
61
62struct arch_switch archsw; /* MI/MD interface boundary */
63
64static void extract_currdev(void);
65static int isa_inb(int port);
66static void isa_outb(int port, int value);
67
68/* from vers.c */
69extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
70
71/* XXX debugging */
72extern char end[];
73
74void
75main(void)
76{
77 int i;
78
79 /* Pick up arguments */
80 kargs = (void *)__args;
81 initial_howto = kargs->howto;
82 initial_bootdev = kargs->bootdev;
83 initial_bootinfo = (struct bootinfo *)PTOV(kargs->bootinfo);
84
85 /*
86 * Initialise the heap as early as possible. Once this is done, malloc() is usable.
87 *
88 * XXX better to locate end of memory and use that
89 */
90 setheap((void *)end, (void *)(end + (384 * 1024)));
91
92 /*
93 * XXX Chicken-and-egg problem; we want to have console output early, but some
94 * console attributes may depend on reading from eg. the boot device, which we
95 * can't do yet.
96 *
97 * We can use printf() etc. once this is done.
98 * If the previous boot stage has requested a serial console, prefer that.
99 */
100 if (initial_howto & RB_SERIAL)
101 setenv("console", "comconsole", 1);
102 cons_probe();
103
104 /*
105 * Initialise the block cache
106 */
107 bcache_init(32, 512); /* 16k cache XXX tune this */
108
109 /*
110 * March through the device switch probing for things.
111 */
112 for (i = 0; devsw[i] != NULL; i++)
113 if (devsw[i]->dv_init != NULL)
114 (devsw[i]->dv_init)();
115
116 printf("\n");
117 printf("%s, Revision %s %d/%dkB\n", bootprog_name, bootprog_rev, getbasemem(), getextmem());
118 printf("(%s, %s)\n", bootprog_maker, bootprog_date);
119
120 extract_currdev(); /* set $currdev and $loaddev */
121 setenv("LINES", "24", 1); /* optional */
122
123 archsw.arch_autoload = i386_autoload;
124 archsw.arch_getdev = i386_getdev;
125 archsw.arch_copyin = i386_copyin;
126 archsw.arch_copyout = i386_copyout;
127 archsw.arch_readin = i386_readin;
128 archsw.arch_isainb = isa_inb;
129 archsw.arch_isaoutb = isa_outb;
130
131 interact(); /* doesn't return */
132}
133
134/*
135 * Set the 'current device' by (if possible) recovering the boot device as
136 * supplied by the initial bootstrap.
137 *
138 * XXX should be extended for netbooting.
139 */
140static void
141extract_currdev(void)
142{
143 struct i386_devdesc currdev;
144 int major, biosdev;
145
146 /* We're booting from a BIOS disk, try to spiff this */
147 currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
148 currdev.d_type = currdev.d_dev->dv_type;
149
150 if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) {
151 /* The passed-in boot device is bad */
152 currdev.d_kind.biosdisk.slice = -1;
153 currdev.d_kind.biosdisk.partition = 0;
154 biosdev = -1;
155 } else {
156 currdev.d_kind.biosdisk.slice = (B_ADAPTOR(initial_bootdev) << 4) + B_CONTROLLER(initial_bootdev) - 1;
157 currdev.d_kind.biosdisk.partition = B_PARTITION(initial_bootdev);
158 biosdev = initial_bootinfo->bi_bios_dev;
159 major = B_TYPE(initial_bootdev);
160
161 /*
162 * If we are booted by an old bootstrap, we have to guess at the BIOS
163 * unit number. We will loose if there is more than one disk type
164 * and we are not booting from the lowest-numbered disk type
165 * (ie. SCSI when IDE also exists).
166 */
167#ifdef PC98
| 27 */
28
29/*
30 * MD bootstrap main() and assorted miscellaneous
31 * commands.
32 */
33
34#include <stand.h>
35#include <string.h>
36#include <machine/bootinfo.h>
37#include <sys/reboot.h>
38
39#include "bootstrap.h"
40#include "libi386/libi386.h"
41#include "btxv86.h"
42
43/* Arguments passed in from the boot1/boot2 loader */
44static struct
45{
46 u_int32_t howto;
47 u_int32_t bootdev;
48 u_int32_t res0;
49 u_int32_t res1;
50 u_int32_t res2;
51 u_int32_t bootinfo;
52} *kargs;
53
54static u_int32_t initial_howto;
55static u_int32_t initial_bootdev;
56#ifdef PC98
57struct bootinfo *initial_bootinfo;
58#else
59static struct bootinfo *initial_bootinfo;
60#endif
61
62struct arch_switch archsw; /* MI/MD interface boundary */
63
64static void extract_currdev(void);
65static int isa_inb(int port);
66static void isa_outb(int port, int value);
67
68/* from vers.c */
69extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
70
71/* XXX debugging */
72extern char end[];
73
74void
75main(void)
76{
77 int i;
78
79 /* Pick up arguments */
80 kargs = (void *)__args;
81 initial_howto = kargs->howto;
82 initial_bootdev = kargs->bootdev;
83 initial_bootinfo = (struct bootinfo *)PTOV(kargs->bootinfo);
84
85 /*
86 * Initialise the heap as early as possible. Once this is done, malloc() is usable.
87 *
88 * XXX better to locate end of memory and use that
89 */
90 setheap((void *)end, (void *)(end + (384 * 1024)));
91
92 /*
93 * XXX Chicken-and-egg problem; we want to have console output early, but some
94 * console attributes may depend on reading from eg. the boot device, which we
95 * can't do yet.
96 *
97 * We can use printf() etc. once this is done.
98 * If the previous boot stage has requested a serial console, prefer that.
99 */
100 if (initial_howto & RB_SERIAL)
101 setenv("console", "comconsole", 1);
102 cons_probe();
103
104 /*
105 * Initialise the block cache
106 */
107 bcache_init(32, 512); /* 16k cache XXX tune this */
108
109 /*
110 * March through the device switch probing for things.
111 */
112 for (i = 0; devsw[i] != NULL; i++)
113 if (devsw[i]->dv_init != NULL)
114 (devsw[i]->dv_init)();
115
116 printf("\n");
117 printf("%s, Revision %s %d/%dkB\n", bootprog_name, bootprog_rev, getbasemem(), getextmem());
118 printf("(%s, %s)\n", bootprog_maker, bootprog_date);
119
120 extract_currdev(); /* set $currdev and $loaddev */
121 setenv("LINES", "24", 1); /* optional */
122
123 archsw.arch_autoload = i386_autoload;
124 archsw.arch_getdev = i386_getdev;
125 archsw.arch_copyin = i386_copyin;
126 archsw.arch_copyout = i386_copyout;
127 archsw.arch_readin = i386_readin;
128 archsw.arch_isainb = isa_inb;
129 archsw.arch_isaoutb = isa_outb;
130
131 interact(); /* doesn't return */
132}
133
134/*
135 * Set the 'current device' by (if possible) recovering the boot device as
136 * supplied by the initial bootstrap.
137 *
138 * XXX should be extended for netbooting.
139 */
140static void
141extract_currdev(void)
142{
143 struct i386_devdesc currdev;
144 int major, biosdev;
145
146 /* We're booting from a BIOS disk, try to spiff this */
147 currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
148 currdev.d_type = currdev.d_dev->dv_type;
149
150 if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) {
151 /* The passed-in boot device is bad */
152 currdev.d_kind.biosdisk.slice = -1;
153 currdev.d_kind.biosdisk.partition = 0;
154 biosdev = -1;
155 } else {
156 currdev.d_kind.biosdisk.slice = (B_ADAPTOR(initial_bootdev) << 4) + B_CONTROLLER(initial_bootdev) - 1;
157 currdev.d_kind.biosdisk.partition = B_PARTITION(initial_bootdev);
158 biosdev = initial_bootinfo->bi_bios_dev;
159 major = B_TYPE(initial_bootdev);
160
161 /*
162 * If we are booted by an old bootstrap, we have to guess at the BIOS
163 * unit number. We will loose if there is more than one disk type
164 * and we are not booting from the lowest-numbered disk type
165 * (ie. SCSI when IDE also exists).
166 */
167#ifdef PC98
|
168 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */
| 168 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) { /* biosdev doesn't match major */
|
169 if (B_TYPE(initial_bootdev) == 6)
170 biosdev = 0x30 + B_UNIT(initial_bootdev);
171 else
172 biosdev = (major << 3) + 0x80 + B_UNIT(initial_bootdev);
| 169 if (B_TYPE(initial_bootdev) == 6)
170 biosdev = 0x30 + B_UNIT(initial_bootdev);
171 else
172 biosdev = (major << 3) + 0x80 + B_UNIT(initial_bootdev);
|
| 173 }
|
173#else
174 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */
175 biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */
176#endif
177 }
178
179 if ((currdev.d_kind.biosdisk.unit = bd_bios2unit(biosdev)) == -1) {
180 printf("Can't work out which disk we are booting from.\n"
181 "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev);
182 currdev.d_kind.biosdisk.unit = 0;
183 }
184 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev), i386_setcurrdev, env_nounset);
185 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset, env_nounset);
186}
187
188COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
189
190static int
191command_reboot(int argc, char *argv[])
192{
193
194 printf("Rebooting...\n");
195 delay(1000000);
196 __exit(0);
197}
198
199/* provide this for panic, as it's not in the startup code */
200void
201exit(int code)
202{
203 __exit(code);
204}
205
206COMMAND_SET(heap, "heap", "show heap usage", command_heap);
207
208static int
209command_heap(int argc, char *argv[])
210{
211 mallocstats();
212 printf("heap base at %p, top at %p\n", end, sbrk(0));
213 return(CMD_OK);
214}
215
216/* ISA bus access functions for PnP, derived from <machine/cpufunc.h> */
217static int
218isa_inb(int port)
219{
220 u_char data;
221
222 if (__builtin_constant_p(port) &&
223 (((port) & 0xffff) < 0x100) &&
224 ((port) < 0x10000)) {
225 __asm __volatile("inb %1,%0" : "=a" (data) : "id" ((u_short)(port)));
226 } else {
227 __asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
228 }
229 return(data);
230}
231
232static void
233isa_outb(int port, int value)
234{
235 u_char al = value;
236
237 if (__builtin_constant_p(port) &&
238 (((port) & 0xffff) < 0x100) &&
239 ((port) < 0x10000)) {
240 __asm __volatile("outb %0,%1" : : "a" (al), "id" ((u_short)(port)));
241 } else {
242 __asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));
243 }
244}
245
| 174#else
175 if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */
176 biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */
177#endif
178 }
179
180 if ((currdev.d_kind.biosdisk.unit = bd_bios2unit(biosdev)) == -1) {
181 printf("Can't work out which disk we are booting from.\n"
182 "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev);
183 currdev.d_kind.biosdisk.unit = 0;
184 }
185 env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev), i386_setcurrdev, env_nounset);
186 env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset, env_nounset);
187}
188
189COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
190
191static int
192command_reboot(int argc, char *argv[])
193{
194
195 printf("Rebooting...\n");
196 delay(1000000);
197 __exit(0);
198}
199
200/* provide this for panic, as it's not in the startup code */
201void
202exit(int code)
203{
204 __exit(code);
205}
206
207COMMAND_SET(heap, "heap", "show heap usage", command_heap);
208
209static int
210command_heap(int argc, char *argv[])
211{
212 mallocstats();
213 printf("heap base at %p, top at %p\n", end, sbrk(0));
214 return(CMD_OK);
215}
216
217/* ISA bus access functions for PnP, derived from <machine/cpufunc.h> */
218static int
219isa_inb(int port)
220{
221 u_char data;
222
223 if (__builtin_constant_p(port) &&
224 (((port) & 0xffff) < 0x100) &&
225 ((port) < 0x10000)) {
226 __asm __volatile("inb %1,%0" : "=a" (data) : "id" ((u_short)(port)));
227 } else {
228 __asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
229 }
230 return(data);
231}
232
233static void
234isa_outb(int port, int value)
235{
236 u_char al = value;
237
238 if (__builtin_constant_p(port) &&
239 (((port) & 0xffff) < 0x100) &&
240 ((port) < 0x10000)) {
241 __asm __volatile("outb %0,%1" : : "a" (al), "id" ((u_short)(port)));
242 } else {
243 __asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));
244 }
245}
246
|