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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Google Inc.
* Copyright (C) 2016 Intel Corporation.
*
* 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 <bootstate.h>
#include <cbmem.h>
#include <console/console.h>
#include <elog.h>
#include <soc/pm.h>
#include <soc/pci_devs.h>
#include <stdint.h>
static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
{
int i;
gpe0_sts &= gpe0_en;
for (i = 0; i <= 31; i++) {
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO, i + start);
}
}
static void pch_log_wake_source(struct chipset_power_state *ps)
{
/* Power Button */
if (ps->pm1_sts & PWRBTN_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
/* RTC */
if (ps->pm1_sts & RTC_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
/* PCI Express (TODO: determine wake device) */
if (ps->pm1_sts & PCIEXPWAK_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
/* PME */
if (ps->gpe0_sts[GPE0_A] & CSE_PME_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
/* SMBUS Wake */
if (ps->gpe0_sts[GPE0_A] & SMB_WAK_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
/* ACPI Wake Event - Always Log prev_sleep_state*/
elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
/* Log GPIO events in set A-D */
pch_log_gpio_gpe(ps->gpe0_sts[GPE0_A], ps->gpe0_en[GPE0_A], 0);
pch_log_gpio_gpe(ps->gpe0_sts[GPE0_B], ps->gpe0_en[GPE0_B], 32);
pch_log_gpio_gpe(ps->gpe0_sts[GPE0_C], ps->gpe0_en[GPE0_C], 64);
pch_log_gpio_gpe(ps->gpe0_sts[GPE0_D], ps->gpe0_en[GPE0_D], 96);
}
static void pch_log_power_and_resets(struct chipset_power_state *ps)
{
/* RTC Reset */
if (ps->gen_pmcon1 & RPS)
elog_add_event(ELOG_TYPE_RTC_RESET);
/* System Reset */
if (ps->gen_pmcon1 & WARM_RESET_STS)
elog_add_event(ELOG_TYPE_SYSTEM_RESET);
/* TCO Timeout */
if (ps->prev_sleep_state != ACPI_S3 &&
ps->tco_sts & TCO_TIMEOUT)
elog_add_event(ELOG_TYPE_TCO_RESET);
/* Power Button Override */
if (ps->pm1_sts & PRBTNOR_STS)
elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
}
void pch_log_state(void)
{
struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE);
if (ps == NULL) {
printk(BIOS_ERR,
"Not logging power state information. "
"Power state not found in cbmem.\n");
return;
}
/* Power and Reset */
pch_log_power_and_resets(ps);
/* Wake Sources */
if (ps->prev_sleep_state > ACPI_S0)
pch_log_wake_source(ps);
}
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