| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * Copyright (C) 2015 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. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <arch/io.h> |
| #include <console/console.h> |
| #include <cpu/x86/smm.h> |
| #include <elog.h> |
| #include <ec/google/chromeec/smm.h> |
| #include <gpio.h> |
| #include <soc/iomap.h> |
| #include <soc/nvs.h> |
| #include <soc/pm.h> |
| #include <soc/smm.h> |
| #include "ec.h" |
| #include "gpio.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. |
| */ |
| return 1; |
| } |
| |
| void mainboard_smi_gpi_handler(const struct gpi_status *sts) |
| { |
| if (gpi_status_get(sts, EC_SMI_GPI)) |
| chromeec_smi_process_events(); |
| } |
| |
| static void mainboard_gpio_smi_sleep(u8 slp_typ) |
| { |
| int i; |
| |
| /* Power down the rails on any sleep type. */ |
| gpio_t active_high_signals[] = { |
| EN_PP3300_KEPLER, |
| EN_PP3300_DX_TOUCH, |
| EN_PP3300_DX_EMMC, |
| EN_PP1800_DX_EMMC, |
| EN_PP3300_DX_CAM, |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(active_high_signals); i++) |
| gpio_set(active_high_signals[i], 0); |
| } |
| |
| void mainboard_smi_sleep(u8 slp_typ) |
| { |
| if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)) |
| chromeec_smi_sleep(slp_typ, MAINBOARD_EC_S3_WAKE_EVENTS, |
| MAINBOARD_EC_S5_WAKE_EVENTS); |
| |
| mainboard_gpio_smi_sleep(slp_typ); |
| } |
| |
| int mainboard_smi_apmc(u8 apmc) |
| { |
| if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)) |
| chromeec_smi_apmc(apmc, MAINBOARD_EC_SCI_EVENTS, |
| MAINBOARD_EC_SMI_EVENTS); |
| return 0; |
| } |