5113f6f70
 김현기
kernel add
|
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
|
/*
* (C) 2003 Bruno Ducrot
* (C) 2004 Dominik Brodowski <linux@dominikbrodowski.de>
*
* Licensed under the terms of the GNU GPL License version 2.
*
* Based on code found in
* linux/include/asm-i386/ist.h and linux/arch/i386/kernel/setup.c
* and originally developed by Andy Grover <andrew.grover@intel.com>
*/
#include <stdio.h>
#include <string.h>
#include <lrmi.h>
int main (void)
{
struct LRMI_regs r;
int retval;
if (!LRMI_init())
return 0;
memset(&r, 0, sizeof(r));
r.eax = 0x0000E980;
r.edx = 0x47534943;
retval = LRMI_int(0x15, &r);
if (!retval) {
printf("Failed!
");
return 0;
}
if (r.eax == 0x47534943) {
printf("BIOS supports GSIC call:
");
printf("\tsignature: %c%c%c%c
",
(r.eax >> 24) & 0xff,
(r.eax >> 16) & 0xff,
(r.eax >> 8) & 0xff,
(r.eax) & 0xff);
printf("\tcommand port = 0x%.4x
",
r.ebx & 0xffff);
printf("\tcommand = 0x%.4x
",
(r.ebx >> 16) & 0xffff);
printf("\tevent port = 0x%.8x
", r.ecx);
printf("\tflags = 0x%.8x
", r.edx);
if (((r.ebx >> 16) & 0xffff) != 0x82) {
printf("non-default command value. If speedstep-smi "
"doesn't work out of the box,
you may want to "
"try out the default value by passing "
"smi_cmd=0x82 to the module
ON YOUR OWN "
"RISK.
");
}
if ((r.ebx & 0xffff) != 0xb2) {
printf("non-default command port. If speedstep-smi "
"doesn't work out of the box,
you may want to "
"try out the default value by passing "
"smi_port=0x82 to the module
ON YOUR OWN "
"RISK.
");
}
} else {
printf("BIOS DOES NOT support GSIC call. Dumping registers anyway:
");
printf("eax = 0x%.8x
", r.eax);
printf("ebx = 0x%.8x
", r.ebx);
printf("ecx = 0x%.8x
", r.ecx);
printf("edx = 0x%.8x
", r.edx);
printf("Note also that some BIOS do not support the initial "
"GSIC call, but the newer
speedstep-smi driver may "
"work.
For this, you need to pass some arguments to "
"the speedstep-smi driver:
");
printf("\tsmi_cmd=0x?? smi_port=0x?? smi_sig=1
");
printf("
Unfortunately, you have to know what exactly are "
"smi_cmd and smi_port, and this
is system "
"dependant.
");
}
return 1;
}
|