src/mainboard/kontron/986lcd-m/mainboard.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2007-2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <types.h>
  17 #include <device/device.h>
  18 #include <console/console.h>
  19 #include <drivers/intel/gma/int15.h>
  20 #include <pc80/mc146818rtc.h>
  21 #include <arch/io.h>
  22 #include <arch/interrupt.h>
  23
  24 /* Hardware Monitor */
  25
  26 static u16 hwm_base = 0xa00;
  27
  28 static void hwm_write(u8 reg, u8 value)
  29 {
  30         outb(reg, hwm_base + 0x05);
  31         outb(value, hwm_base + 0x06);
  32 }
  33
  34 static void hwm_bank(u8 bank)
  35 {
  36         hwm_write(0x4e, bank);
  37 }
  38
  39 #define FAN_CRUISE_CONTROL_DISABLED     0
  40 #define FAN_CRUISE_CONTROL_SPEED        1
  41 #define FAN_CRUISE_CONTROL_THERMAL      2
  42
  43 #define FAN_SPEED_5625  0
  44 //#define FAN_TEMPERATURE_30DEGC        0
  45
  46 struct fan_speed {
  47         u8 fan_in;
  48         u16 fan_speed;
  49 };
  50
  51 // FANIN Target Speed Register
  52 // FANIN = 337500 / RPM
  53 struct fan_speed fan_speeds[] = {
  54         { 0x3c, 5625 }, { 0x41, 5192 }, { 0x47, 4753 }, { 0x4e, 4326 },
  55         { 0x56, 3924 }, { 0x5f, 3552 }, { 0x69, 3214 }, { 0x74, 2909 },
  56         { 0x80, 2636 }, { 0x8d, 2393 }, { 0x9b, 2177 }, { 0xaa, 1985 },
  57         { 0xba, 1814 }, { 0xcb, 1662 }, { 0xdd, 1527 }, { 0xf0, 1406 }
  58 };
  59
  60 struct temperature {
  61         u8 deg_celsius;
  62         u8 deg_fahrenheit;
  63 };
  64
  65 struct temperature temperatures[] = {
  66         { 30,  86 }, { 33,  91 }, { 36,  96 }, { 39, 102 },
  67         { 42, 107 }, { 45, 113 }, { 48, 118 }, { 51, 123 },
  68         { 54, 129 }, { 57, 134 }, { 60, 140 }, { 63, 145 },
  69         { 66, 150 }, { 69, 156 }, { 72, 161 }, { 75, 167 }
  70 };
  71
  72 static void hwm_setup(void)
  73 {
  74         int cpufan_control = 0, sysfan_control = 0;
  75         int cpufan_speed = 0, sysfan_speed = 0;
  76         int cpufan_temperature = 0, sysfan_temperature = 0;
  77
  78         cpufan_control = FAN_CRUISE_CONTROL_DISABLED;
  79         get_option(&cpufan_control, "cpufan_cruise_control");
  80         cpufan_speed = FAN_SPEED_5625;
  81         get_option(&cpufan_speed, "cpufan_speed");
  82         //cpufan_temperature = FAN_TEMPERATURE_30DEGC;
  83         //get_option(&cpufan_temperature, "cpufan_temperature");
  84
  85         sysfan_control = FAN_CRUISE_CONTROL_DISABLED;
  86         get_option(&sysfan_control, "sysfan_cruise_control");
  87         sysfan_speed = FAN_SPEED_5625;
  88         get_option(&sysfan_speed, "sysfan_speed");
  89         //sysfan_temperature = FAN_TEMPERATURE_30DEGC;
  90         //get_option(&sysfan_temperature, "sysfan_temperature");
  91
  92         // hwm_write(0x31, 0x20); // AVCC high limit
  93         // hwm_write(0x34, 0x06); // VIN2 low limit
  94
  95         hwm_bank(0);
  96         hwm_write(0x59, 0x20); // Diode Selection
  97         hwm_write(0x5d, 0x0f); // All Sensors Diode, not Thermistor
  98
  99         hwm_bank(4);
 100         hwm_write(0x54, 0xf1); // SYSTIN temperature offset
 101         hwm_write(0x55, 0x19); // CPUTIN temperature offset
 102         hwm_write(0x56, 0xfc); // AUXTIN temperature offset
 103
 104         hwm_bank(0x80); // Default
 105
 106         u8 fan_config = 0;
 107         // 00 FANOUT is Manual Mode
 108         // 01 FANOUT is Thermal Cruise Mode
 109         // 10 FANOUT is Fan Speed Cruise Mode
 110         switch (cpufan_control) {
 111         case FAN_CRUISE_CONTROL_SPEED:   fan_config |= (2 << 4); break;
 112         case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 4); break;
 113         }
 114         switch (sysfan_control) {
 115         case FAN_CRUISE_CONTROL_SPEED:   fan_config |= (2 << 2); break;
 116         case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 2); break;
 117         }
 118         // This register must be written first
 119         hwm_write(0x04, fan_config);
 120
 121         switch (cpufan_control) {
 122         case FAN_CRUISE_CONTROL_SPEED:
 123                 printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to %d RPM\n",
 124                                 fan_speeds[cpufan_speed].fan_speed);
 125                 hwm_write(0x06, fan_speeds[cpufan_speed].fan_in);  // CPUFANIN target speed
 126                 break;
 127         case FAN_CRUISE_CONTROL_THERMAL:
 128                 printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to activation at %d deg C/%d deg F\n",
 129                                 temperatures[cpufan_temperature].deg_celsius,
 130                                 temperatures[cpufan_temperature].deg_fahrenheit);
 131                 hwm_write(0x06, temperatures[cpufan_temperature].deg_celsius);  // CPUFANIN target temperature
 132                 break;
 133         }
 134
 135         switch (sysfan_control) {
 136         case FAN_CRUISE_CONTROL_SPEED:
 137                 printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to %d RPM\n",
 138                                 fan_speeds[sysfan_speed].fan_speed);
 139                 hwm_write(0x05, fan_speeds[sysfan_speed].fan_in);  // SYSFANIN target speed
 140                 break;
 141         case FAN_CRUISE_CONTROL_THERMAL:
 142                 printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to activation at %d deg C/%d deg F\n",
 143                                 temperatures[sysfan_temperature].deg_celsius,
 144                                 temperatures[sysfan_temperature].deg_fahrenheit);
 145                 hwm_write(0x05, temperatures[sysfan_temperature].deg_celsius); // SYSFANIN target temperature
 146                 break;
 147         }
 148
 149         hwm_write(0x0e, 0x02); // Fan Output Step Down Time
 150         hwm_write(0x0f, 0x02); // Fan Output Step Up Time
 151
 152         hwm_write(0x47, 0xaf); // FAN divisor register
 153         hwm_write(0x4b, 0x84); // AUXFANIN speed divisor
 154
 155         hwm_write(0x40, 0x01); // Init, but no SMI#
 156 }
 157
 158
 159
 160 // mainboard_enable is executed as first thing after
 161 // enumerate_buses().
 162
 163 static void mainboard_enable(device_t dev)
 164 {
 165         install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_DEFAULT, GMA_INT15_BOOT_DISPLAY_DEFAULT, 3);
 166         hwm_setup();
 167 }
 168
 169 struct chip_operations mainboard_ops = {
 170         .enable_dev = mainboard_enable,
 171 };