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
|
/* $OpenBSD: apmprobe.c,v 1.3 1997/11/30 21:51:36 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 REGENTS 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.
*
*/
/*
* APM derived from: apm_init.S, LP (Laptop Package)
* wich contained this:
* Copyright (C) 1994 by HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp>
*
*/
/*
* If you want to know the specification of APM BIOS, see the following
* documentations,
*
* [1] Intel Corporation and Microsoft Corporation, "Advanced Power
* Management, The Next Generation, Version 1.0", Feb.,1992.
*
* [2] Intel Corporation and Microsoft Corporation, "Advanced Power
* Management (APM) BIOS Interface Specification Revision 1.1",
* Sep.,1993, Intel Order Number: 241704-001, Microsoft Part
* Number: 781-110-X01
*
* or contact
*
* APM Support Desk (Intel Corporation, US)
* TEL: (800)628-8686
* FAX: (916)356-6100.
*/
#include "libsa.h"
#include <stand/boot/bootarg.h>
#include <machine/apmvar.h>
#include <machine/biosvar.h>
#include "debug.h"
static __inline u_int
apm_check()
{
register u_int detail;
register u_int8_t f;
__asm __volatile(DOINT(0x15) "\n\t"
"setc %b1\n\t"
"movzwl %%ax, %0\n\t"
"shll $16, %%ecx\n\t"
"orl %%ecx, %0"
: "=a" (detail), "=b" (f)
: "0" (APM_INSTCHECK), "1" (APM_DEV_APM_BIOS)
: "%ecx", "cc");
if (f || BIOS_regs.biosr_bx != 0x504d /* "PM" */ ) {
#ifdef DEBUG
printf("apm_check: %x, %x, %x\n",
f, BIOS_regs.biosr_bx, detail);
#endif
return 0;
} else
return detail;
}
static __inline int
apm_disconnect()
{
register u_int16_t rv;
__asm __volatile(DOINT(0x15) "\n\t"
"setc %b0"
: "=a" (rv)
: "0" (APM_DISCONNECT), "b" (APM_DEV_APM_BIOS)
: "%ecx", "%edx", "cc");
return (rv & 0xff)? rv >> 8 : 0;
}
static __inline int
apm_connect(ai)
bios_apminfo_t *ai;
{
register u_int16_t f;
__asm __volatile (DOINT(0x15) "\n\t"
"setc %b1\n\t"
"movb %%ah, %h1\n\t"
"movzwl %%ax, %%eax\n\tshll $4, %0\n\t"
"movzwl %%cx, %%ecx\n\tshll $4, %2\n\t"
"movzwl %%dx, %%edx\n\tshll $4, %3\n\t"
: "=a" (ai->apm_code32_base),
"=b" (f),
"=c" (ai->apm_code16_base),
"=d" (ai->apm_data_base)
: "0" (APM_PROT32_CONNECT), "1" (APM_DEV_APM_BIOS)
: "cc");
ai->apm_entry = BIOS_regs.biosr_bx;
#if 0
ai->apm_code_len = BIOS_regs.biosr_si & 0xffff;
ai->apm_data_len = BIOS_regs.biosr_di & 0xffff;
#else
ai->apm_code_len = 0x10000;
ai->apm_data_len = 0x10000;
#endif
return (f & 0xff)? f >> 8 : 0;
}
void
apmprobe()
{
bios_apminfo_t ai;
if ((ai.apm_detail = apm_check())) {
apm_disconnect();
if (apm_connect(&ai) != 0)
printf(": connect error\n");
#ifdef DEBUG
printf(": %x text=%x/%x[%x] data=%x[%x] @ %x",
ai.apm_detail, ai.apm_code32_base,
ai.apm_code16_base, ai.apm_code_len,
ai.apm_data_base, ai.apm_data_len,
ai.apm_entry);
#else
printf(" apm");
#endif
putchar('\n');
addbootarg(BOOTARG_APMINFO, sizeof(ai), &ai);
}
}
|
