src/soc/intel/broadwell/pch/elog.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi_pm.h>
   4 #include <bootstate.h>
   5 #include <stdint.h>
   6 #include <elog.h>
   7 #include <soc/lpc.h>
   8 #include <soc/pm.h>
   9
  10 static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
  11 {
  12         int i;
  13
  14         gpe0_sts &= gpe0_en;
  15
  16         for (i = 0; i <= 31; i++) {
  17                 if (gpe0_sts & (1 << i))
  18                         elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i + start);
  19         }
  20 }
  21
  22 static void pch_log_wake_source(const struct chipset_power_state *ps)
  23 {
  24         /* Power Button */
  25         if (ps->pm1_sts & PWRBTN_STS)
  26                 elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
  27
  28         /* RTC */
  29         if (ps->pm1_sts & RTC_STS)
  30                 elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
  31
  32         /* PCI Express (TODO: determine wake device) */
  33         if (ps->pm1_sts & PCIEXPWAK_STS)
  34                 elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
  35
  36         /* PME (TODO: determine wake device) */
  37         if (ps->gpe0_sts[GPE_STD] & PME_STS)
  38                 elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
  39
  40         /* Internal PME (TODO: determine wake device) */
  41         if (ps->gpe0_sts[GPE_STD] & PME_B0_STS)
  42                 elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
  43
  44         /* SMBUS Wake */
  45         if (ps->gpe0_sts[GPE_STD] & SMB_WAK_STS)
  46                 elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
  47
  48         /* GPIO27 */
  49         if (ps->gpe0_sts[GPE_STD] & GP27_STS)
  50                 elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, 27);
  51
  52         /* Log GPIO events in set 1-3 */
  53         pch_log_gpio_gpe(ps->gpe0_sts[GPE_31_0], ps->gpe0_en[GPE_31_0], 0);
  54         pch_log_gpio_gpe(ps->gpe0_sts[GPE_63_32], ps->gpe0_en[GPE_63_32], 32);
  55         pch_log_gpio_gpe(ps->gpe0_sts[GPE_94_64], ps->gpe0_en[GPE_94_64], 64);
  56 }
  57
  58 static void pch_log_power_and_resets(const struct chipset_power_state *ps)
  59 {
  60         /* Thermal Trip Status */
  61         if (ps->gen_pmcon2 & THERMTRIP_STS)
  62                 elog_add_event(ELOG_TYPE_THERM_TRIP);
  63
  64         /* PWR_FLR Power Failure */
  65         if (ps->gen_pmcon2 & PWROK_FLR)
  66                 elog_add_event(ELOG_TYPE_POWER_FAIL);
  67
  68         /* SUS Well Power Failure */
  69         if (ps->gen_pmcon3 & SUS_PWR_FLR)
  70                 elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
  71
  72         /* SYS_PWROK Failure */
  73         if (ps->gen_pmcon2 & SYSPWR_FLR)
  74                 elog_add_event(ELOG_TYPE_SYS_PWROK_FAIL);
  75
  76         /* PWROK Failure */
  77         if (ps->gen_pmcon2 & PWROK_FLR)
  78                 elog_add_event(ELOG_TYPE_PWROK_FAIL);
  79
  80         /* TCO Timeout */
  81         if (ps->prev_sleep_state != ACPI_S3 &&
  82             ps->tco2_sts & TCO2_STS_SECOND_TO)
  83                 elog_add_event(ELOG_TYPE_TCO_RESET);
  84
  85         /* Power Button Override */
  86         if (ps->pm1_sts & PRBTNOR_STS)
  87                 elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
  88
  89         /* RTC reset */
  90         if (ps->gen_pmcon3 & RTC_BATTERY_DEAD)
  91                 elog_add_event(ELOG_TYPE_RTC_RESET);
  92
  93         /* System Reset Status (reset button pushed) */
  94         if (ps->gen_pmcon2 & SYSTEM_RESET_STS)
  95                 elog_add_event(ELOG_TYPE_RESET_BUTTON);
  96
  97         /* General Reset Status */
  98         if (ps->gen_pmcon3 & GEN_RST_STS)
  99                 elog_add_event(ELOG_TYPE_SYSTEM_RESET);
 100
 101         /* ACPI Wake Event */
 102         if (ps->prev_sleep_state != ACPI_S0)
 103                 elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
 104 }
 105
 106 static void pch_log_state(void *unused)
 107 {
 108         const struct chipset_power_state *ps;
 109
 110         if (acpi_fetch_pm_state(&ps, PS_CLAIMER_ELOG) < 0)
 111                 return;
 112
 113         /* Power and Reset */
 114         pch_log_power_and_resets(ps);
 115
 116         /* Wake Sources */
 117         pch_log_wake_source(ps);
 118 }
 119
 120 BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, pch_log_state, NULL);