/* * This file is part of the coreboot project. * * Copyright (C) 2008-2009 coresystems GmbH * Copyright 2012 Google Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <arch/io.h> #include <console/console.h> #include <cpu/x86/smm.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> #include <southbridge/intel/lynxpoint/nvs.h> #include <southbridge/intel/lynxpoint/pch.h> #include <southbridge/intel/lynxpoint/me.h> #include <northbridge/intel/haswell/haswell.h> #include <cpu/intel/haswell/haswell.h> #include <elog.h> /* Include EC functions */ #include <ec/google/chromeec/ec.h> #include "ec.h" int mainboard_io_trap_handler(int smif) { switch (smif) { case 0x99: printk(BIOS_DEBUG, "Sample\n"); smm_get_gnvs()->smif = 0; break; default: return 0; } /* On success, the IO Trap Handler returns 0 * On failure, the IO Trap Handler returns a value != 0 * * For now, we force the return value to 0 and log all traps to * see what's going on. */ //gnvs->smif = 0; return 1; } static u8 mainboard_smi_ec(void) { u8 cmd = google_chromeec_get_event(); u32 pm1_cnt; #if CONFIG_ELOG_GSMI /* Log this event */ if (cmd) elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd); #endif switch (cmd) { case EC_HOST_EVENT_LID_CLOSED: printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); /* Go to S5 */ pm1_cnt = inl(get_pmbase() + PM1_CNT); pm1_cnt |= (0xf << 10); outl(pm1_cnt, get_pmbase() + PM1_CNT); break; } return cmd; } /* gpi_sts is GPIO 47:32 */ void mainboard_smi_gpi(u32 gpi_sts) { if (gpi_sts & (1 << (EC_SMI_GPI - 32))) { /* Process all pending events */ while (mainboard_smi_ec() != 0); } } static void bolt_wlan_off(void) { u16 gpio_base = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc; u32 gpio_conf; /* Make sure pin is owned by GPIO subsystem and not ACPI */ gpio_conf = inl(gpio_base + GPIO_OWNER(0)); gpio_conf |= GPIO_OWNER_GPIO << 29; outl(gpio_conf, gpio_base + GPIO_OWNER(0)); /* Set GPIO29 config to only be reset on RSMRST */ gpio_conf = inl(gpio_base + GPIO_RESET(0)); gpio_conf |= GPIO_RESET_RSMRST << 29; outl(gpio_conf, gpio_base + GPIO_RESET(0)); /* Set WLAN_OFF_L (GPIO29) as Output GPIO driven high */ gpio_conf = GPIO_MODE_GPIO | GPIO_DIR_OUTPUT | GPO_LEVEL_HIGH; outl(gpio_conf, gpio_base + GPIO_CONFIG0(29)); } void mainboard_smi_sleep(u8 slp_typ) { /* Disable USB charging if required */ switch (slp_typ) { case 3: if (smm_get_gnvs()->s3u0 == 0) google_chromeec_set_usb_charge_mode( 0, USB_CHARGE_MODE_DISABLED); if (smm_get_gnvs()->s3u1 == 0) google_chromeec_set_usb_charge_mode( 1, USB_CHARGE_MODE_DISABLED); break; case 5: if (smm_get_gnvs()->s5u0 == 0) google_chromeec_set_usb_charge_mode( 0, USB_CHARGE_MODE_DISABLED); if (smm_get_gnvs()->s5u1 == 0) google_chromeec_set_usb_charge_mode( 1, USB_CHARGE_MODE_DISABLED); break; } /* Set WLAN_OFF GPIO state */ bolt_wlan_off(); /* Disable SCI and SMI events */ google_chromeec_set_smi_mask(0); google_chromeec_set_sci_mask(0); /* Clear pending events that may trigger immediate wake */ while (google_chromeec_get_event() != 0); /* Enable wake events */ google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); } #define APMC_FINALIZE 0xcb static int mainboard_finalized = 0; int mainboard_smi_apmc(u8 apmc) { switch (apmc) { case APMC_FINALIZE: if (mainboard_finalized) { printk(BIOS_DEBUG, "SMI#: Already finalized\n"); return 0; } intel_pch_finalize_smm(); intel_northbridge_haswell_finalize_smm(); intel_cpu_haswell_finalize_smm(); mainboard_finalized = 1; break; case APM_CNT_ACPI_ENABLE: google_chromeec_set_smi_mask(0); /* Clear all pending events */ while (google_chromeec_get_event() != 0); google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS); break; case APM_CNT_ACPI_DISABLE: google_chromeec_set_sci_mask(0); /* Clear all pending events */ while (google_chromeec_get_event() != 0); google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS); break; } return 0; }