| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 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 <string.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #include <arch/io.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <southbridge/intel/bd82x6x/pch.h> |
| #include "ec.h" |
| #include <ec/google/chromeec/ec.h> |
| |
| #ifndef __PRE_RAM__ |
| #include <boot/coreboot_tables.h> |
| |
| #define GPIO_COUNT 6 |
| #define ACTIVE_LOW 0 |
| #define ACTIVE_HIGH 1 |
| |
| static int get_lid_switch(void) |
| { |
| u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); |
| |
| return !!(ec_switches & EC_SWITCH_LID_OPEN); |
| } |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| device_t dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
| //u16 gen_pmcon_1 = pci_read_config32(dev, GEN_PMCON_1); |
| |
| if (!gpio_base) |
| return; |
| |
| u32 gp_lvl2 = inl(gpio_base + 0x38); |
| |
| gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio)); |
| gpios->count = GPIO_COUNT; |
| |
| /* Write Protect: GPIO57 = PCH_SPI_WP_D */ |
| gpios->gpios[0].port = 57; |
| gpios->gpios[0].polarity = ACTIVE_HIGH; |
| gpios->gpios[0].value = (gp_lvl2 >> (57 - 32)) & 1; |
| strncpy((char *)gpios->gpios[0].name,"write protect", |
| GPIO_MAX_NAME_LENGTH); |
| /* Recovery: the "switch" comes from the EC */ |
| gpios->gpios[1].port = -1; /* Indicate that this is a pseudo GPIO */ |
| gpios->gpios[1].polarity = ACTIVE_HIGH; |
| gpios->gpios[1].value = get_recovery_mode_switch(); |
| strncpy((char *)gpios->gpios[1].name,"recovery", GPIO_MAX_NAME_LENGTH); |
| |
| /* Lid: the "switch" comes from the EC */ |
| gpios->gpios[2].port = -1; |
| gpios->gpios[2].polarity = ACTIVE_HIGH; |
| gpios->gpios[2].value = get_lid_switch(); |
| strncpy((char *)gpios->gpios[2].name,"lid", GPIO_MAX_NAME_LENGTH); |
| |
| /* Power Button: hard-coded as not pressed; we'll detect later presses |
| * via SMI. */ |
| gpios->gpios[3].port = -1; |
| gpios->gpios[3].polarity = ACTIVE_HIGH; |
| gpios->gpios[3].value = 0; |
| strncpy((char *)gpios->gpios[3].name,"power", GPIO_MAX_NAME_LENGTH); |
| |
| /* Developer: a tricky case on Link, there is no switch */ |
| gpios->gpios[4].port = -1; /* Indicate that this is a pseudo GPIO */ |
| gpios->gpios[4].polarity = ACTIVE_HIGH; |
| gpios->gpios[4].value = get_developer_mode_switch(); |
| strncpy((char *)gpios->gpios[4].name,"developer", GPIO_MAX_NAME_LENGTH); |
| |
| /* Did we load the VGA Option ROM? */ |
| gpios->gpios[5].port = -1; /* Indicate that this is a pseudo GPIO */ |
| gpios->gpios[5].polarity = ACTIVE_HIGH; |
| gpios->gpios[5].value = oprom_is_loaded; |
| strncpy((char *)gpios->gpios[5].name,"oprom", GPIO_MAX_NAME_LENGTH); |
| } |
| #endif |
| |
| /* The dev-switch is virtual on Link (and so handled elsewhere). */ |
| int get_developer_mode_switch(void) |
| { |
| return 0; |
| } |
| |
| /* There are actually two recovery switches. One is the magic keyboard chord, |
| * the other is driven by Servo. */ |
| int get_recovery_mode_switch(void) |
| { |
| u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); |
| u32 ec_events; |
| |
| /* If a switch is set, we don't need to look at events. */ |
| if (ec_switches & (EC_SWITCH_DEDICATED_RECOVERY)) |
| return 1; |
| |
| /* Else check if the EC has posted the keyboard recovery event. */ |
| ec_events = google_chromeec_get_events_b(); |
| |
| return !!(ec_events & |
| EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); |
| } |