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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2015 Google Inc.
*
* 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 <arch/acpi.h>
#include <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <elog.h>
#include <ec/google/chromeec/ec.h>
#include <gpio.h>
#include <soc/iomap.h>
#include <soc/nvs.h>
#include <soc/pm.h>
#include <soc/smm.h>
#include "ec.h"
#include "gpio.h"
int mainboard_io_trap_handler(int 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.
*/
return 1;
}
static u8 mainboard_smi_ec(void)
{
u8 cmd = 0;
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
u32 pm1_cnt;
cmd = google_chromeec_get_event();
/* Log this event */
if (IS_ENABLED(CONFIG_ELOG_GSMI) && cmd)
elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
switch (cmd) {
case EC_HOST_EVENT_LID_CLOSED:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
/* Go to S5 */
pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
pm1_cnt |= (0xf << 10);
outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
break;
}
#endif
return cmd;
}
void mainboard_smi_gpi_handler(const struct gpi_status *sts)
{
if (gpi_status_get(sts, EC_SMI_GPI)) {
/* Process all pending events */
while (mainboard_smi_ec() != 0)
;
}
}
static void google_ec_smi_sleep(u8 slp_typ)
{
switch (slp_typ) {
case ACPI_S3:
/* Enable wake events */
google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS);
break;
case ACPI_S5:
/* Enable wake events */
google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS);
break;
}
/* Disable SCI and SMI events */
google_chromeec_set_smi_mask(0);
google_chromeec_set_sci_mask(0);
/* Clear pending events that may trigger immediate wake */
while (google_chromeec_get_event() != 0)
;
}
static void mainboard_gpio_smi_sleep(u8 slp_typ)
{
int i;
/* Power down the rails on any sleep type. */
gpio_t active_high_signals[] = {
EN_PP3300_KEPLER,
EN_PP3300_DX_TOUCH,
EN_PP3300_DX_EMMC,
EN_PP1800_DX_EMMC,
EN_PP3300_DX_CAM,
};
for (i = 0; i < ARRAY_SIZE(active_high_signals); i++)
gpio_set(active_high_signals[i], 0);
}
void mainboard_smi_sleep(u8 slp_typ)
{
if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC))
google_ec_smi_sleep(slp_typ);
mainboard_gpio_smi_sleep(slp_typ);
}
int mainboard_smi_apmc(u8 apmc)
{
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
switch (apmc) {
case APM_CNT_ACPI_ENABLE:
google_chromeec_set_smi_mask(0);
/* Clear all pending events */
while (google_chromeec_get_event() != 0)
;
google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
break;
case APM_CNT_ACPI_DISABLE:
google_chromeec_set_sci_mask(0);
/* Clear all pending events */
while (google_chromeec_get_event() != 0)
;
google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS);
break;
}
#endif
return 0;
}
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