| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 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. |
| */ |
| |
| #include <string.h> |
| #include <arch/io.h> |
| #include <bootmode.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <southbridge/intel/lynxpoint/pch.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| #define GPIO_SPI_WP 58 |
| #define GPIO_REC_MODE 12 |
| |
| #define FLAG_SPI_WP 0 |
| #define FLAG_REC_MODE 1 |
| #define FLAG_DEV_MODE 2 |
| |
| #ifndef __PRE_RAM__ |
| #include <boot/coreboot_tables.h> |
| |
| #define GPIO_COUNT 6 |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio *gpio; |
| |
| gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio)); |
| gpios->count = GPIO_COUNT; |
| |
| gpio = gpios->gpios; |
| fill_lb_gpio(gpio++, GPIO_SPI_WP, ACTIVE_HIGH, "write protect", 0); |
| fill_lb_gpio(gpio++, GPIO_REC_MODE, ACTIVE_LOW, "recovery", |
| get_recovery_mode_switch()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "developer", |
| get_developer_mode_switch()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "lid", 1); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "power", 0); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "oprom", gfx_get_init_done()); |
| } |
| #endif |
| |
| int get_write_protect_state(void) |
| { |
| device_t dev; |
| #ifdef __PRE_RAM__ |
| dev = PCI_DEV(0, 0x1f, 2); |
| #else |
| dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2)); |
| #endif |
| return (pci_read_config32(dev, SATA_SP) >> FLAG_SPI_WP) & 1; |
| } |
| |
| int get_developer_mode_switch(void) |
| { |
| return 0; |
| } |
| |
| int get_recovery_mode_switch(void) |
| { |
| device_t dev; |
| #ifdef __PRE_RAM__ |
| dev = PCI_DEV(0, 0x1f, 2); |
| #else |
| dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2)); |
| #endif |
| return (pci_read_config32(dev, SATA_SP) >> FLAG_REC_MODE) & 1; |
| } |
| |
| #ifdef __PRE_RAM__ |
| void init_bootmode_straps(void) |
| { |
| u32 flags = 0; |
| |
| /* Write Protect: GPIO58 = GPIO_SPI_WP, active high */ |
| if (get_gpio(GPIO_SPI_WP)) |
| flags |= (1 << FLAG_SPI_WP); |
| |
| /* Recovery: GPIO12 = RECOVERY_L, active low */ |
| if (!get_gpio(GPIO_REC_MODE)) |
| flags |= (1 << FLAG_REC_MODE); |
| |
| /* Developer: Virtual */ |
| |
| pci_write_config32(PCI_DEV(0, 0x1f, 2), SATA_SP, flags); |
| } |
| #endif |