| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. |
| * |
| * 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/lynxpoint/pch.h> |
| #include <southbridge/intel/lynxpoint/gpio.h> |
| |
| #ifndef __PRE_RAM__ |
| #include <boot/coreboot_tables.h> |
| |
| #define GPIO_COUNT 6 |
| #define ACTIVE_LOW 0 |
| #define ACTIVE_HIGH 1 |
| |
| 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; |
| |
| if (!gpio_base) |
| return; |
| |
| u32 gp_lvl = inl(gpio_base + GP_LVL); |
| u32 gp_lvl2 = inl(gpio_base + GP_LVL2); |
| u32 gp_lvl3 = inl(gpio_base + GP_LVL3); |
| |
| gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio)); |
| gpios->count = GPIO_COUNT; |
| |
| /* Write Protect: GPIO22 */ |
| gpios->gpios[0].port = 0; |
| gpios->gpios[0].polarity = ACTIVE_LOW; |
| gpios->gpios[0].value = (gp_lvl >> 22) & 1; |
| strncpy((char *)gpios->gpios[0].name,"write protect", |
| GPIO_MAX_NAME_LENGTH); |
| |
| /* Recovery: GPIO69 - SV_DETECT - J8E3 (silkscreen: J8E2) */ |
| gpios->gpios[1].port = 69; |
| gpios->gpios[1].polarity = ACTIVE_HIGH; |
| gpios->gpios[1].value = (gp_lvl3 >> (69-64)) & 1; |
| strncpy((char *)gpios->gpios[1].name,"recovery", GPIO_MAX_NAME_LENGTH); |
| |
| /* Developer: GPIO48 - BIOS_RESP - J8E4 (silkscreen: J8E3) */ |
| gpios->gpios[2].port = 48; |
| gpios->gpios[2].polarity = ACTIVE_LOW; |
| gpios->gpios[2].value = (gp_lvl2 >> (48-32)) & 1; |
| strncpy((char *)gpios->gpios[2].name,"developer", GPIO_MAX_NAME_LENGTH); |
| |
| /* Hard code the lid switch GPIO to open. */ |
| gpios->gpios[3].port = -1; |
| gpios->gpios[3].polarity = ACTIVE_HIGH; |
| gpios->gpios[3].value = 1; |
| strncpy((char *)gpios->gpios[3].name,"lid", GPIO_MAX_NAME_LENGTH); |
| |
| /* Power Button */ |
| gpios->gpios[4].port = -1; |
| gpios->gpios[4].polarity = ACTIVE_HIGH; |
| gpios->gpios[4].value = 0; |
| strncpy((char *)gpios->gpios[4].name,"power", GPIO_MAX_NAME_LENGTH); |
| |
| /* Did we load the VGA option ROM? */ |
| gpios->gpios[5].port = -1; |
| 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 |
| |
| int get_developer_mode_switch(void) |
| { |
| device_t dev; |
| #ifdef __PRE_RAM__ |
| dev = PCI_DEV(0, 0x1f, 0); |
| #else |
| dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| #endif |
| u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
| u32 gp_lvl2 = inl(gpio_base + GP_LVL2); |
| |
| /* |
| * Developer: GPIO48, Connected to J8E4, however the silkscreen says |
| * J8E3. The jumper is active low. |
| */ |
| return !((gp_lvl2 >> (48-32)) & 1); |
| } |
| |
| int get_recovery_mode_switch(void) |
| { |
| device_t dev; |
| #ifdef __PRE_RAM__ |
| dev = PCI_DEV(0, 0x1f, 0); |
| #else |
| dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| #endif |
| u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
| u32 gp_lvl3 = inl(gpio_base + GP_LVL3); |
| |
| /* |
| * Recovery: GPIO69, Connected to J8E3, however the silkscreen says |
| * J8E2. The jump is active high. |
| */ |
| return (gp_lvl3 >> (69-64)) & 1; |
| } |
| |
| int get_write_protect_state(void) |
| { |
| return 0; |
| } |
| |