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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 <console/console.h>
#include <cpu/x86/smm.h>
#include <southbridge/intel/bd82x6x/nvs.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/bd82x6x/me.h>
#include <northbridge/intel/sandybridge/sandybridge.h>
#include <cpu/intel/model_206ax/model_206ax.h>
#include <elog.h>
#include <ec/compal/ene932/ec.h>
#include "ec.h"
/* Power Management PCI Configuration Registers
* Bus 0, Device 31, Function 0, Offset 0xB8
* 00 = No Effect
* 01 = SMI#
* 10 = SCI
* 11 = NMI
*/
#define GPI_ROUT 0x8000F8B8
#define GPI_IS_SMI 0x01
#define GPI_IS_SCI 0x02
static void set_lid_gpi_mode(u32 mode)
{
u32 reg32 = 0;
u16 reg16 = 0;
/* read the GPI register, clear the lid GPI's mode, write the new mode
* and write out the register.
*/
outl(GPI_ROUT, 0xcf8);
reg32 = inl(0xcfc);
reg32 &= ~(0x03 << (EC_LID_GPI * 2));
reg32 |= (mode << (EC_LID_GPI * 2));
outl(GPI_ROUT, 0xcf8);
outl(reg32, 0xcfc);
/* Set or Disable Lid GPE as SMI source in the ALT_GPI_SMI_EN register. */
reg16 = inw(smm_get_pmbase() + ALT_GP_SMI_EN);
if (mode == GPI_IS_SCI) {
reg16 &= ~(1 << EC_LID_GPI);
} else {
reg16 |= (1 << EC_LID_GPI);
}
outw(reg16, smm_get_pmbase() + ALT_GP_SMI_EN);
return;
}
int mainboard_io_trap_handler(int smif)
{
printk(BIOS_DEBUG, "mainboard_io_trap_handler: %x\n", smif);
switch (smif) {
case 0x99:
printk(BIOS_DEBUG, "Sample\n");
smm_get_gnvs()->smif = 0;
break;
default:
return 0;
}
/* On success, the IO Trap Handler returns 0
* On failure, the IO Trap Handler returns a value != 0
*
* For now, we force the return value to 0 and log all traps to
* see what's going on.
*/
//gnvs->smif = 0;
return 1;
}
static u8 mainboard_smi_ec(void)
{
u8 src;
u32 pm1_cnt;
#if CONFIG_ELOG_GSMI
static int battery_critical_logged;
#endif
ec_kbc_write_cmd(0x56);
src = ec_kbc_read_ob();
printk(BIOS_DEBUG, "mainboard_smi_ec src: %x\n", src);
switch (src) {
case EC_BATTERY_CRITICAL:
#if CONFIG_ELOG_GSMI
if (!battery_critical_logged)
elog_add_event_byte(ELOG_TYPE_EC_EVENT,
EC_EVENT_BATTERY_CRITICAL);
battery_critical_logged = 1;
#endif
break;
case EC_LID_CLOSE:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
#if CONFIG_ELOG_GSMI
elog_add_event_byte(ELOG_TYPE_EC_EVENT, EC_EVENT_LID_CLOSED);
#endif
/* Go to S5 */
pm1_cnt = inl(smm_get_pmbase() + PM1_CNT);
pm1_cnt |= (0xf << 10);
outl(pm1_cnt, smm_get_pmbase() + PM1_CNT);
break;
}
return src;
}
void mainboard_smi_gpi(u32 gpi_sts)
{
u32 pm1_cnt;
printk(BIOS_DEBUG, "mainboard_smi_gpi: %x\n", gpi_sts);
if (gpi_sts & (1 << EC_SMI_GPI)) {
/* Process all pending events from EC */
while (mainboard_smi_ec() != EC_NO_EVENT);
}
else if (gpi_sts & (1 << EC_LID_GPI)) {
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
#if CONFIG_ELOG_GSMI
elog_add_event_byte(ELOG_TYPE_EC_EVENT, EC_EVENT_LID_CLOSED);
#endif
/* Go to S5 */
pm1_cnt = inl(smm_get_pmbase() + PM1_CNT);
pm1_cnt |= (0xf << 10);
outl(pm1_cnt, smm_get_pmbase() + PM1_CNT);
}
}
void mainboard_smi_sleep(u8 slp_typ)
{
printk(BIOS_DEBUG, "mainboard_smi_sleep: %x\n", slp_typ);
/* Disable SCI and SMI events */
/* Clear pending events that may trigger immediate wake */
/* Enable wake events */
/* Tell the EC to Disable USB power */
if (smm_get_gnvs()->s3u0 == 0 && smm_get_gnvs()->s3u1 == 0) {
ec_kbc_write_cmd(0x45);
ec_kbc_write_ib(0xF2);
}
}
#define APMC_FINALIZE 0xcb
#define APMC_ACPI_EN 0xe1
#define APMC_ACPI_DIS 0x1e
static int mainboard_finalized = 0;
int mainboard_smi_apmc(u8 apmc)
{
printk(BIOS_DEBUG, "mainboard_smi_apmc: %x\n", apmc);
switch (apmc) {
case APMC_FINALIZE:
printk(BIOS_DEBUG, "APMC: FINALIZE\n");
if (mainboard_finalized) {
printk(BIOS_DEBUG, "APMC#: Already finalized\n");
return 0;
}
intel_me_finalize_smm();
intel_pch_finalize_smm();
intel_sandybridge_finalize_smm();
intel_model_206ax_finalize_smm();
mainboard_finalized = 1;
break;
case APMC_ACPI_EN:
printk(BIOS_DEBUG, "APMC: ACPI_EN\n");
/* Clear all pending events */
/* EC cmd:59 data:E8 */
ec_kbc_write_cmd(0x59);
ec_kbc_write_ib(0xE8);
/* Set LID GPI to generate SCIs */
set_lid_gpi_mode(GPI_IS_SCI);
break;
case APMC_ACPI_DIS:
printk(BIOS_DEBUG, "APMC: ACPI_DIS\n");
/* Clear all pending events */
/* EC cmd:59 data:e9 */
ec_kbc_write_cmd(0x59);
ec_kbc_write_ib(0xE9);
/* Set LID GPI to generate SMIs */
set_lid_gpi_mode(GPI_IS_SMI);
break;
}
return 0;
}
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