src/soc/intel/tigerlake/elog.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootstate.h>
   4 #include <console/console.h>
   5 #include <stdint.h>
   6 #include <elog.h>
   7 #include <intelblocks/pmclib.h>
   8 #include <soc/pci_devs.h>
   9 #include <soc/pm.h>
  10
  11 static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
  12 {
  13         int i;
  14
  15         gpe0_sts &= gpe0_en;
  16
  17         for (i = 0; i <= 31; i++) {
  18                 if (gpe0_sts & (1 << i))
  19                         elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO, i + start);
  20         }
  21 }
  22
  23 static void pch_log_wake_source(struct chipset_power_state *ps)
  24 {
  25         /* Power Button */
  26         if (ps->pm1_sts & PWRBTN_STS)
  27                 elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
  28
  29         /* RTC */
  30         if (ps->pm1_sts & RTC_STS)
  31                 elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
  32
  33         /* PCI Express (TODO: determine wake device) */
  34         if (ps->pm1_sts & PCIEXPWAK_STS)
  35                 elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
  36
  37         /* PME (TODO: determine wake device) */
  38         if (ps->gpe0_sts[GPE_STD] & PME_STS)
  39                 elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
  40
  41         /* Internal PME (TODO: determine wake device) */
  42         if (ps->gpe0_sts[GPE_STD] & PME_B0_STS)
  43                 elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
  44
  45         /* SMBUS Wake */
  46         if (ps->gpe0_sts[GPE_STD] & SMB_WAK_STS)
  47                 elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
  48
  49         /* Log GPIO events in set 1-3 */
  50         pch_log_gpio_gpe(ps->gpe0_sts[GPE_31_0], ps->gpe0_en[GPE_31_0], 0);
  51         pch_log_gpio_gpe(ps->gpe0_sts[GPE_63_32], ps->gpe0_en[GPE_63_32], 32);
  52         pch_log_gpio_gpe(ps->gpe0_sts[GPE_95_64], ps->gpe0_en[GPE_95_64], 64);
  53         /* Treat the STD as an extension of GPIO to obtain visibility. */
  54         pch_log_gpio_gpe(ps->gpe0_sts[GPE_STD], ps->gpe0_en[GPE_STD], 96);
  55 }
  56
  57 static void pch_log_power_and_resets(struct chipset_power_state *ps)
  58 {
  59         /* Thermal Trip */
  60         if (ps->gblrst_cause[0] & GBLRST_CAUSE0_THERMTRIP)
  61                 elog_add_event(ELOG_TYPE_THERM_TRIP);
  62
  63         /* CSME-Initiated Host Reset with power down */
  64         if (ps->hpr_cause0 & HPR_CAUSE0_MI_HRPD)
  65                 elog_add_event(ELOG_TYPE_MI_HRPD);
  66
  67         /* CSME-Initiated Host Reset with power cycle */
  68         if (ps->hpr_cause0 & HPR_CAUSE0_MI_HRPC)
  69                 elog_add_event(ELOG_TYPE_MI_HRPC);
  70
  71         /* CSME-Initiated Host Reset without power cycle */
  72         if (ps->hpr_cause0 & HPR_CAUSE0_MI_HR)
  73                 elog_add_event(ELOG_TYPE_MI_HR);
  74
  75         /* PWR_FLR Power Failure */
  76         if (ps->gen_pmcon_a & PWR_FLR)
  77                 elog_add_event(ELOG_TYPE_POWER_FAIL);
  78
  79         /* SUS Well Power Failure */
  80         if (ps->gen_pmcon_a & SUS_PWR_FLR)
  81                 elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
  82
  83         /* TCO Timeout */
  84         if (ps->prev_sleep_state != ACPI_S3 &&
  85             ps->tco2_sts & TCO_STS_SECOND_TO)
  86                 elog_add_event(ELOG_TYPE_TCO_RESET);
  87
  88         /* Power Button Override */
  89         if (ps->pm1_sts & PRBTNOR_STS)
  90                 elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
  91
  92         /* RTC reset */
  93         if (ps->gen_pmcon_b & RTC_BATTERY_DEAD)
  94                 elog_add_event(ELOG_TYPE_RTC_RESET);
  95
  96         /* Host Reset Status */
  97         if (ps->gen_pmcon_a & HOST_RST_STS)
  98                 elog_add_event(ELOG_TYPE_SYSTEM_RESET);
  99
 100         /* ACPI Wake Event */
 101         if (ps->prev_sleep_state != ACPI_S0)
 102                 elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
 103 }
 104
 105 static void pch_log_state(void *unused)
 106 {
 107         struct chipset_power_state *ps = pmc_get_power_state();
 108
 109         if (!ps) {
 110                 printk(BIOS_ERR, "chipset_power_state not found!\n");
 111                 return;
 112         }
 113
 114         /* Power and Reset */
 115         pch_log_power_and_resets(ps);
 116
 117         /* Wake Sources */
 118         if (ps->prev_sleep_state > ACPI_S0)
 119                 pch_log_wake_source(ps);
 120 }
 121
 122 BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, pch_log_state, NULL);
 123
 124 void elog_gsmi_cb_platform_log_wake_source(void)
 125 {
 126         struct chipset_power_state ps;
 127         pmc_fill_pm_reg_info(&ps);
 128         pch_log_wake_source(&ps);
 129 }