elog.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi_pm.h>
#include <bootstate.h>
#include <stdint.h>
#include <elog.h>
#include <soc/lpc.h>
#include <soc/pm.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_GPE, i + start);
        }
}
 
static void pch_log_wake_source(const 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 (TODO: determine wake device) */
        if (ps->gpe0_sts[GPE_STD] & PME_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
 
        /* Internal PME (TODO: determine wake device) */
        if (ps->gpe0_sts[GPE_STD] & PME_B0_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
 
        /* SMBUS Wake */
        if (ps->gpe0_sts[GPE_STD] & SMB_WAK_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
 
        /* GPIO27 */
        if (ps->gpe0_sts[GPE_STD] & GP27_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, 27);
 
        /* Log GPIO events in set 1-3 */
        pch_log_gpio_gpe(ps->gpe0_sts[GPE_31_0], ps->gpe0_en[GPE_31_0], 0);
        pch_log_gpio_gpe(ps->gpe0_sts[GPE_63_32], ps->gpe0_en[GPE_63_32], 32);
        pch_log_gpio_gpe(ps->gpe0_sts[GPE_94_64], ps->gpe0_en[GPE_94_64], 64);
}
 
static void pch_log_power_and_resets(const struct chipset_power_state *ps)
{
        /* Thermal Trip Status */
        if (ps->gen_pmcon2 & THERMTRIP_STS)
                elog_add_event(ELOG_TYPE_THERM_TRIP);
 
        /* PWR_FLR Power Failure */
        if (ps->gen_pmcon2 & PWROK_FLR)
                elog_add_event(ELOG_TYPE_POWER_FAIL);
 
        /* SUS Well Power Failure */
        if (ps->gen_pmcon3 & SUS_PWR_FLR)
                elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
 
        /* SYS_PWROK Failure */
        if (ps->gen_pmcon2 & SYSPWR_FLR)
                elog_add_event(ELOG_TYPE_SYS_PWROK_FAIL);
 
        /* PWROK Failure */
        if (ps->gen_pmcon2 & PWROK_FLR)
                elog_add_event(ELOG_TYPE_PWROK_FAIL);
 
        /* TCO Timeout */
        if (ps->prev_sleep_state != ACPI_S3 &&
            ps->tco2_sts & TCO2_STS_SECOND_TO)
                elog_add_event(ELOG_TYPE_TCO_RESET);
 
        /* Power Button Override */
        if (ps->pm1_sts & PRBTNOR_STS)
                elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
 
        /* RTC reset */
        if (ps->gen_pmcon3 & RTC_BATTERY_DEAD)
                elog_add_event(ELOG_TYPE_RTC_RESET);
 
        /* System Reset Status (reset button pushed) */
        if (ps->gen_pmcon2 & SYSTEM_RESET_STS)
                elog_add_event(ELOG_TYPE_RESET_BUTTON);
 
        /* General Reset Status */
        if (ps->gen_pmcon3 & GEN_RST_STS)
                elog_add_event(ELOG_TYPE_SYSTEM_RESET);
 
        /* ACPI Wake Event */
        if (ps->prev_sleep_state != ACPI_S0)
                elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
}
 
static void pch_log_state(void *unused)
{
        const struct chipset_power_state *ps;
 
        if (acpi_pm_state_for_elog(&ps) < 0)
                return;
 
        /* Power and Reset */
        pch_log_power_and_resets(ps);
 
        /* Wake Sources */
        pch_log_wake_source(ps);
}
 
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, pch_log_state, NULL);