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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <arch/io.h>
#include <arch/romcc_io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include "southbridge/intel/i82801gx/nvs.h"
#include "southbridge/intel/i82801gx/i82801gx.h"
#include <ec/acpi/ec.h>
#include <pc80/mc146818rtc.h>
#include <ec/lenovo/h8/h8.h>
#include "dock.h"
#include "smi.h"
/* The southbridge SMI handler checks whether gnvs has a
* valid pointer before calling the trap handler
*/
extern global_nvs_t *gnvs;
static void mainboard_smm_init(void)
{
printk(BIOS_DEBUG, "initializing SMI\n");
/* Enable 0x1600/0x1600 register pair */
ec_set_bit(0x00, 0x05);
}
static void mainboard_smi_save_cmos(void)
{
u8 val;
u8 tmp70, tmp72;
tmp70 = inb(0x70);
tmp72 = inb(0x72);
val = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4);
set_option("tft_brightness", &val);
val = ec_read(H8_VOLUME_CONTROL);
set_option("volume", &val);
outb(tmp70, 0x70);
outb(tmp72, 0x72);
}
int mainboard_io_trap_handler(int smif)
{
static int smm_initialized;
if (!smm_initialized) {
mainboard_smm_init();
smm_initialized = 1;
}
switch (smif) {
case SMI_DOCK_CONNECT:
dlpc_init();
if (!dock_connect()) {
/* set dock LED to indicate status */
ec_write(0x0c, 0x88);
} else {
/* blink dock LED to indicate failure */
ec_write(0x0c, 0xc8);
}
break;
case SMI_DOCK_DISCONNECT:
dock_disconnect();
ec_write(0x0c, 0x08);
break;
case SMI_SAVE_CMOS:
mainboard_smi_save_cmos();
break;
default:
return 0;
}
/* On success, the IO Trap Handler returns 1
* On failure, the IO Trap Handler returns a value != 1 */
return 1;
}
static void mainboard_smi_brightness_up(void)
{
u8 value;
if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) < 0xf0)
pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, (value + 0x10) | 0xf);
}
static void mainboard_smi_brightness_down(void)
{
u8 value;
if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) > 0x10)
pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, (value - 0x10) & 0xf0);
}
static void mainboard_smi_handle_ec_sci(void)
{
u8 status = inb(EC_SC);
u8 event;
if (!(status & EC_SCI_EVT))
return;
event = ec_query();
printk(BIOS_DEBUG, "EC event %02x\n", event);
switch(event) {
/* brightness up */
case 0x14:
mainboard_smi_brightness_up();
mainboard_smi_save_cmos();
break;
/* brightness down */
case 0x15:
mainboard_smi_brightness_down();
mainboard_smi_save_cmos();
break;
default:
break;
}
}
void mainboard_smi_gpi(u16 gpi)
{
if (gpi & (1 << 12))
mainboard_smi_handle_ec_sci();
}
int mainboard_apm_cnt(u8 data)
{
u16 pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc;
u8 tmp;
printk(BIOS_DEBUG, "%s: pmbase %04X, data %02X\n", __func__, pmbase, data);
if (!pmbase)
return 0;
switch(data) {
case APM_CNT_ACPI_ENABLE:
/* use 0x1600/0x1604 to prevent races with userspace */
ec_set_ports(0x1604, 0x1600);
/* route H8SCI to SCI */
outw(inw(ALT_GP_SMI_EN) & ~0x1000, pmbase + ALT_GP_SMI_EN);
tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb);
tmp &= ~0x03;
tmp |= 0x02;
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp);
/* discard all events, and enable attention */
ec_write(0x80, 0x01);
break;
case APM_CNT_ACPI_DISABLE:
/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
provide a EC query function */
ec_set_ports(0x66, 0x62);
/* route H8SCI# to SMI */
outw(inw(pmbase + ALT_GP_SMI_EN) | 0x1000, pmbase + ALT_GP_SMI_EN);
tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb);
tmp &= ~0x03;
tmp |= 0x01;
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp);
/* discard all events, and enable attention */
ec_write(0x80, 0x01);
break;
default:
break;
}
return 0;
}
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