| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com> |
| * |
| * 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 <arch/io.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <pc80/mc146818rtc.h> |
| |
| #include "superio_hwm.h" |
| |
| /* Hardware Monitor */ |
| |
| #define FAN_CRUISE_CONTROL_DISABLED 0 |
| #define FAN_CRUISE_CONTROL_SPEED 1 |
| #define FAN_CRUISE_CONTROL_THERMAL 2 |
| |
| #define FAN_SPEED_5625 0 |
| //#define FAN_TEMPERATURE_30DEGC 0 |
| |
| #define HWM_BASE 0x290 |
| |
| 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); |
| } |
| |
| 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 } |
| }; |
| |
| 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"); |
| //cpufan_temperature = FAN_TEMPERATURE_30DEGC; |
| //get_option(&cpufan_temperature, "cpufan_temperature"); |
| |
| sysfan_control = FAN_CRUISE_CONTROL_DISABLED; |
| get_option(&sysfan_control, "sysfan_cruise_control"); |
| sysfan_speed = FAN_SPEED_5625; |
| get_option(&sysfan_speed, "sysfan_speed"); |
| //sysfan_temperature = FAN_TEMPERATURE_30DEGC; |
| //get_option(&sysfan_temperature, "sysfan_temperature"); |
| |
| // hwm_write(0x31, 0x20); // AVCC high limit |
| // hwm_write(0x34, 0x06); // VIN2 low limit |
| |
| 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# |
| } |