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
|
/*
* This file is part of the coreboot project.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
// Thermal Zone
External (\PPKG, MethodObj)
#define HAVE_THERMALZONE
Scope (\_TZ)
{
ThermalZone (THRM)
{
Name (_TC1, 0x02)
Name (_TC2, 0x05)
// Ignore critical temps for the first few reads
// at boot to prevent unexpected shutdown
Name (IRDC, 4)
Name (CRDC, 0)
// Thermal zone polling frequency: 10 seconds
Name (_TZP, 100)
// Thermal sampling period for passive cooling: 2 seconds
Name (_TSP, 20)
// Convert from Degrees C to 1/10 Kelvin for ACPI
Method (CTOK, 1) {
// 10th of Degrees C
Multiply (Arg0, 10, Local0)
// Convert to Kelvin
Add (Local0, 2732, Local0)
Return (Local0)
}
// Threshold for OS to shutdown
Method (_CRT, 0, Serialized)
{
Return (CTOK (\TCRT))
}
// Threshold for passive cooling
Method (_PSV, 0, Serialized)
{
Return (CTOK (\TPSV))
}
// Processors used for passive cooling
Method (_PSL, 0, Serialized)
{
Return (\PPKG ())
}
Method (_TMP, 0, Serialized)
{
// Get CPU Temperature from the Embedded Controller
Store (\_SB.PCI0.LPCB.EC0.CPUT, Local0)
// Re-read from EC if the temperature is very high to
// avoid OS shutdown if we got a bad reading.
If (LGreaterEqual (Local0, \TCRT)) {
Store (\_SB.PCI0.LPCB.EC0.CPUT, Local0)
If (LGreaterEqual (Local0, \TCRT)) {
// Check if this is an early read
If (LLess (CRDC, IRDC)) {
Store (0, Local0)
}
}
}
// Keep track of first few reads by the OS
If (LLess (CRDC, IRDC)) {
Increment (CRDC)
}
// Invalid reading, ensure fan is spinning
If (LGreaterEqual (Local0, 0x80)) {
Return (CTOK (\F4ON))
}
Return (CTOK (Local0))
}
Method (_AC0) {
If (LLessEqual (\FLVL, 0)) {
Return (CTOK (\F0OF))
} Else {
Return (CTOK (\F0ON))
}
}
Method (_AC1) {
If (LLessEqual (\FLVL, 1)) {
Return (CTOK (\F1OF))
} Else {
Return (CTOK (\F1ON))
}
}
Method (_AC2) {
If (LLessEqual (\FLVL, 2)) {
Return (CTOK (\F2OF))
} Else {
Return (CTOK (\F2ON))
}
}
Method (_AC3) {
If (LLessEqual (\FLVL, 3)) {
Return (CTOK (\F3OF))
} Else {
Return (CTOK (\F3ON))
}
}
Method (_AC4) {
If (LLessEqual (\FLVL, 4)) {
Return (CTOK (\F4OF))
} Else {
Return (CTOK (\F4ON))
}
}
Name (_AL0, Package () { \_SB.PCI0.LPCB.EC0.FAN0 })
Name (_AL1, Package () { \_SB.PCI0.LPCB.EC0.FAN1 })
Name (_AL2, Package () { \_SB.PCI0.LPCB.EC0.FAN2 })
Name (_AL3, Package () { \_SB.PCI0.LPCB.EC0.FAN3 })
Name (_AL4, Package () { \_SB.PCI0.LPCB.EC0.FAN4 })
}
}
|
