blob: 54aa4bfd948c994f7c4513a283868a3a44b01544 [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright 2016 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 <console/console.h>
#include <cpu/x86/smm.h>
#include <ec/google/chromeec/ec.h>
#include <elog.h>
#include <halt.h>
#include "smm.h"
static int chromeec_process_one_event(void)
{
uint8_t event = google_chromeec_get_event();
/* Log this event */
if (IS_ENABLED(CONFIG_ELOG_GSMI) && event)
elog_add_event_byte(ELOG_TYPE_EC_EVENT, event);
switch (event) {
case EC_HOST_EVENT_LID_CLOSED:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
poweroff();
break;
}
return !!event;
}
void chromeec_smi_process_events(void)
{
/* Process all pending events */
while (chromeec_process_one_event())
;
}
static void clear_pending_events(void)
{
struct ec_response_get_next_event mkbp_event;
while (google_chromeec_get_event() != 0)
;
while (google_chromeec_get_mkbp_event(&mkbp_event) == 0)
;
}
void chromeec_smi_sleep(int slp_type, uint64_t s3_mask, uint64_t s5_mask)
{
if (!google_chromeec_is_uhepi_supported()) {
switch (slp_type) {
case ACPI_S3:
/* Enable wake events */
google_chromeec_set_wake_mask(s3_mask);
break;
case ACPI_S5:
/* Enable wake events */
google_chromeec_set_wake_mask(s5_mask);
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 */
clear_pending_events();
}
void chromeec_smi_device_event_sleep(int slp_type, uint64_t s3_mask,
uint64_t s5_mask)
{
switch (slp_type) {
case ACPI_S3:
/* Enable device wake events */
google_chromeec_set_device_enabled_events(s3_mask);
break;
case ACPI_S5:
/* Enable device wake events */
google_chromeec_set_device_enabled_events(s5_mask);
break;
}
/* Read and clear pending events that may trigger immediate wake */
google_chromeec_get_device_current_events();
}
void chromeec_smi_apmc(int apmc, uint64_t sci_mask, uint64_t smi_mask)
{
switch (apmc) {
case APM_CNT_ACPI_ENABLE:
google_chromeec_set_smi_mask(0);
clear_pending_events();
google_chromeec_set_sci_mask(sci_mask);
break;
case APM_CNT_ACPI_DISABLE:
google_chromeec_set_sci_mask(0);
clear_pending_events();
google_chromeec_set_smi_mask(smi_mask);
break;
}
}