| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <bootstate.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <elog.h> |
| #include <intelblocks/pmclib.h> |
| #include <intelblocks/xhci.h> |
| #include <soc/pm.h> |
| #include <soc/pci_devs.h> |
| #include <soc/smbus.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); |
| |
| /* XHCI */ |
| if (ps->gpe0_sts[GPE0_A] & XHCI_PME_STS) |
| pch_xhci_update_wake_event(soc_get_xhci_usb_info()); |
| |
| /* SMBUS Wake */ |
| if (ps->gpe0_sts[GPE0_A] & SMB_WAK_STS) |
| elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0); |
| |
| /* ACPI Wake Event - Log prev sleep state only if it was not S0. */ |
| if (ps->prev_sleep_state != ACPI_S0) |
| 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->tco1_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); |
| } |
| |
| void elog_gsmi_cb_platform_log_wake_source(void) |
| { |
| struct chipset_power_state ps; |
| |
| pmc_fill_pm_reg_info(&ps); |
| pch_log_wake_source(&ps); |
| } |