src/soc/intel/apollolake/elog.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <bootstate.h>
  16 #include <cbmem.h>
  17 #include <console/console.h>
  18 #include <elog.h>
  19 #include <intelblocks/pmclib.h>
  20 #include <intelblocks/xhci.h>
  21 #include <soc/pm.h>
  22 #include <soc/pci_devs.h>
  23 #include <soc/smbus.h>
  24 #include <stdint.h>
  25
  26 static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
  27 {
  28         int i;
  29
  30         gpe0_sts &= gpe0_en;
  31
  32         for (i = 0; i <= 31; i++) {
  33                 if (gpe0_sts & (1 << i))
  34                         elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO, i + start);
  35         }
  36 }
  37
  38 static void pch_log_wake_source(struct chipset_power_state *ps)
  39 {
  40         /* Power Button */
  41         if (ps->pm1_sts & PWRBTN_STS)
  42                 elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
  43
  44         /* RTC */
  45         if (ps->pm1_sts & RTC_STS)
  46                 elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
  47
  48         /* PCI Express (TODO: determine wake device) */
  49         if (ps->pm1_sts & PCIEXPWAK_STS)
  50                 elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
  51
  52         /* PME */
  53         if (ps->gpe0_sts[GPE0_A] & CSE_PME_STS)
  54                 elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
  55
  56         /* XHCI */
  57         if (ps->gpe0_sts[GPE0_A] & XHCI_PME_STS)
  58                 pch_xhci_update_wake_event(soc_get_xhci_usb_info());
  59
  60         /* SMBUS Wake */
  61         if (ps->gpe0_sts[GPE0_A] & SMB_WAK_STS)
  62                 elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
  63
  64         /* ACPI Wake Event - Log prev sleep state only if it was not S0. */
  65         if (ps->prev_sleep_state != ACPI_S0)
  66                 elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
  67
  68         /* Log GPIO events in set A-D */
  69         pch_log_gpio_gpe(ps->gpe0_sts[GPE0_A], ps->gpe0_en[GPE0_A], 0);
  70         pch_log_gpio_gpe(ps->gpe0_sts[GPE0_B], ps->gpe0_en[GPE0_B], 32);
  71         pch_log_gpio_gpe(ps->gpe0_sts[GPE0_C], ps->gpe0_en[GPE0_C], 64);
  72         pch_log_gpio_gpe(ps->gpe0_sts[GPE0_D], ps->gpe0_en[GPE0_D], 96);
  73 }
  74
  75 static void pch_log_power_and_resets(struct chipset_power_state *ps)
  76 {
  77         /* RTC Reset */
  78         if (ps->gen_pmcon1 & RPS)
  79                 elog_add_event(ELOG_TYPE_RTC_RESET);
  80
  81         /* System Reset */
  82         if (ps->gen_pmcon1 & WARM_RESET_STS)
  83                 elog_add_event(ELOG_TYPE_SYSTEM_RESET);
  84
  85         /* TCO Timeout */
  86         if (ps->prev_sleep_state != ACPI_S3 &&
  87             ps->tco1_sts & TCO_TIMEOUT)
  88                 elog_add_event(ELOG_TYPE_TCO_RESET);
  89
  90         /* Power Button Override */
  91         if (ps->pm1_sts & PRBTNOR_STS)
  92                 elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
  93
  94 }
  95
  96 void pch_log_state(void)
  97 {
  98         struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE);
  99
 100         if (ps == NULL) {
 101                 printk(BIOS_ERR,
 102                         "Not logging power state information. "
 103                         "Power state not found in cbmem.\n");
 104                 return;
 105         }
 106
 107         /* Power and Reset */
 108         pch_log_power_and_resets(ps);
 109
 110         /* Wake Sources */
 111         if (ps->prev_sleep_state > ACPI_S0)
 112                 pch_log_wake_source(ps);
 113 }
 114
 115 void elog_gsmi_cb_platform_log_wake_source(void)
 116 {
 117         struct chipset_power_state ps;
 118
 119         pmc_fill_pm_reg_info(&ps);
 120         pch_log_wake_source(&ps);
 121 }