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
152
153
154
155
156
157
158
159
160
161
162
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2009 coresystems GmbH
*
* 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.
*/
#include <types.h>
#include <device/device.h>
#include <console/console.h>
#include <drivers/intel/gma/int15.h>
#include <pc80/mc146818rtc.h>
#include <arch/io.h>
#include <arch/interrupt.h>
/* Hardware Monitor */
static u16 hwm_base = 0xa00;
static void hwm_write(u8 reg, u8 value)
{
outb(reg, hwm_base + 0x05);
outb(value, hwm_base + 0x06);
}
static void hwm_bank(u8 bank)
{
hwm_write(0x4e, bank);
}
#define FAN_CRUISE_CONTROL_DISABLED 0
#define FAN_CRUISE_CONTROL_SPEED 1
#define FAN_CRUISE_CONTROL_THERMAL 2
#define FAN_SPEED_5625 0
struct fan_speed {
u8 fan_in;
u16 fan_speed;
};
/* FANIN Target Speed Register */
/* FANIN = 337500 / RPM */
struct fan_speed fan_speeds[] = {
{ 0x3c, 5625 }, { 0x41, 5192 }, { 0x47, 4753 }, { 0x4e, 4326 },
{ 0x56, 3924 }, { 0x5f, 3552 }, { 0x69, 3214 }, { 0x74, 2909 },
{ 0x80, 2636 }, { 0x8d, 2393 }, { 0x9b, 2177 }, { 0xaa, 1985 },
{ 0xba, 1814 }, { 0xcb, 1662 }, { 0xdd, 1527 }, { 0xf0, 1406 }
};
struct temperature {
u8 deg_celsius;
u8 deg_fahrenheit;
};
struct temperature temperatures[] = {
{ 30, 86 }, { 33, 91 }, { 36, 96 }, { 39, 102 },
{ 42, 107 }, { 45, 113 }, { 48, 118 }, { 51, 123 },
{ 54, 129 }, { 57, 134 }, { 60, 140 }, { 63, 145 },
{ 66, 150 }, { 69, 156 }, { 72, 161 }, { 75, 167 }
};
static void hwm_setup(void)
{
int cpufan_control = 0, sysfan_control = 0;
int cpufan_speed = 0, sysfan_speed = 0;
int cpufan_temperature = 0, sysfan_temperature = 0;
cpufan_control = FAN_CRUISE_CONTROL_DISABLED;
get_option(&cpufan_control, "cpufan_cruise_control");
cpufan_speed = FAN_SPEED_5625;
get_option(&cpufan_speed, "cpufan_speed");
sysfan_control = FAN_CRUISE_CONTROL_DISABLED;
get_option(&sysfan_control, "sysfan_cruise_control");
sysfan_speed = FAN_SPEED_5625;
get_option(&sysfan_speed, "sysfan_speed");
hwm_bank(0);
hwm_write(0x59, 0x20); /* Diode Selection */
hwm_write(0x5d, 0x0f); /* All Sensors Diode, not Thermistor */
hwm_bank(4);
hwm_write(0x54, 0xf1); /* SYSTIN temperature offset */
hwm_write(0x55, 0x19); /* CPUTIN temperature offset */
hwm_write(0x56, 0xfc); /* AUXTIN temperature offset */
hwm_bank(0x80); /* Default */
u8 fan_config = 0;
/* 00 FANOUT is Manual Mode */
/* 01 FANOUT is Thermal Cruise Mode */
/* 10 FANOUT is Fan Speed Cruise Mode */
switch (cpufan_control) {
case FAN_CRUISE_CONTROL_SPEED: fan_config |= (2 << 4); break;
case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 4); break;
}
switch (sysfan_control) {
case FAN_CRUISE_CONTROL_SPEED: fan_config |= (2 << 2); break;
case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 2); break;
}
/* This register must be written first */
hwm_write(0x04, fan_config);
switch (cpufan_control) {
case FAN_CRUISE_CONTROL_SPEED:
printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to %d RPM\n",
fan_speeds[cpufan_speed].fan_speed);
hwm_write(0x06, fan_speeds[cpufan_speed].fan_in); /* CPUFANIN target speed */
break;
case FAN_CRUISE_CONTROL_THERMAL:
printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to activation at %d deg C/%d deg F\n",
temperatures[cpufan_temperature].deg_celsius,
temperatures[cpufan_temperature].deg_fahrenheit);
hwm_write(0x06, temperatures[cpufan_temperature].deg_celsius); /* CPUFANIN target temperature */
break;
}
switch (sysfan_control) {
case FAN_CRUISE_CONTROL_SPEED:
printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to %d RPM\n",
fan_speeds[sysfan_speed].fan_speed);
hwm_write(0x05, fan_speeds[sysfan_speed].fan_in); /* SYSFANIN target speed */
break;
case FAN_CRUISE_CONTROL_THERMAL:
printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to activation at %d deg C/%d deg F\n",
temperatures[sysfan_temperature].deg_celsius,
temperatures[sysfan_temperature].deg_fahrenheit);
hwm_write(0x05, temperatures[sysfan_temperature].deg_celsius); /* SYSFANIN target temperature */
break;
}
hwm_write(0x0e, 0x02); /* Fan Output Step Down Time */
hwm_write(0x0f, 0x02); /* Fan Output Step Up Time */
hwm_write(0x47, 0xaf); /* FAN divisor register */
hwm_write(0x4b, 0x84); /* AUXFANIN speed divisor */
hwm_write(0x40, 0x01); /* Init, but no SMI# */
}
/* mainboard_enable is executed as first thing after */
/* enumerate_buses(). */
static void mainboard_enable(device_t dev)
{
install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_DEFAULT, GMA_INT15_BOOT_DISPLAY_DEFAULT, 3);
hwm_setup();
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
|
