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
|
/*
* fbsdboot.c Boot FreeBSD from DOS
*
* (C) 1994 by Christian Gusenbauer (cg@fimp01.fim.uni-linz.ac.at)
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* I ALLOW YOU USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. I DISCLAIM
* ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
* USE OF THIS SOFTWARE.
*
*/
#include <dos.h>
#include <stdio.h>
#include <process.h>
#include "reboot.h"
#include "boot.h"
#include "bootinfo.h"
#include "dosboot.h"
#include "protmod.h"
#define MAV 1
#define MIV 7
#define ptr2pa(x) (((((long)(x))&0xffff0000l)>>12l)+(((long)(x))&0xffffl))
static void usage(char *name)
{
fprintf(stderr, "FreeBSD boot Version %d.%d\n", MAV, MIV);
fprintf(stderr, "(c) 1994, 1995 Christian Gusenbauer,\n cg@fimp01.fim.uni-linz.ac.at\n\n");
fprintf(stderr, "usage: %s [ options ] [ kernelname ]\n", name);
fprintf(stderr, "where options are:\n");
fprintf(stderr, "\t-r ... use compiled-in rootdev\n");
fprintf(stderr, "\t-s ... reboot to single user only\n");
fprintf(stderr, "\t-a ... ask for file name to reboot from\n");
fprintf(stderr, "\t-d ... give control to kernel debugger\n");
fprintf(stderr, "\t-g ... give control to GDB debugger\n");
fprintf(stderr, "\t-c ... invoke user configuration routing\n");
fprintf(stderr, "\t-v ... print all potentially useful info\n");
fprintf(stderr, "\t-C ... use cdrom as root\n");
fprintf(stderr, "\t-D ... boot a kernel from a DOS medium\n");
fprintf(stderr, "\t (default: c:\\kernel)\n");
exit(1);
}
static unsigned int memsize(int x)
{
unsigned int rt=0;
switch (x) {
case 1:
_asm {
mov bl,1
mov ah,88h
int 15h
mov rt,ax
}
break;
default:
_asm {
int 12h
mov rt,ax
}
break;
}
return rt;
}
int main(int argc, char *argv[])
{
char *kernel="/kernel", *ptr;
int i, dos=0;
long howto=0;
extern unsigned long get_diskinfo(int);
VCPIboot = 0;
slice = 0;
for (i = 1; i < argc; i++) { /* check arguments */
if (argv[i][0] != '-') { /* kernel name */
kernel = argv[i];
break;
}
ptr = &argv[i][1];
while (*ptr) { /* check options */
switch(*ptr) {
case 'r': howto |= RB_DFLTROOT; break;
case 's': howto |= RB_SINGLE; break;
case 'a': howto |= RB_ASKNAME; break;
case 'c': howto |= RB_CONFIG; break;
case 'd': howto |= RB_KDB; break;
case 'g': howto |= RB_GDB; break;
case 'v': howto |= RB_VERBOSE; break;
case 'C': howto |= RB_CDROM; break;
case 'D': dos = 1; kernel = "c:\\kernel"; break;
case '?':
default: usage(argv[0]);
}
ptr++;
}
}
bootinfo.bi_version = BOOTINFO_VERSION;
for (i = 0; i < N_BIOS_GEOM; i++)
bootinfo.bi_bios_geom[i] = get_diskinfo(0x80+i);
bootinfo.bi_basemem = memsize(0);
bootinfo.bi_extmem = memsize(1);
bootinfo.bi_memsizes_valid = 0; /* that is not yet valid!! */
bootinfo.bi_kernelname = (char *) ptr2pa(kernel);
bootinfo.bi_nfs_diskless = NULL;
bootinfo.bi_size = sizeof(bootinfo);
if (dos)
dosboot(howto, kernel); /* boot given kernel from DOS partition */
else
bsdboot(0x80, howto, kernel); /* boot from FreeBSD partition */
return 0;
}
|
