Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include <string.h> |
| 21 | #include <vendorcode/google/chromeos/chromeos.h> |
| 22 | #include <arch/io.h> |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 23 | #include <device/device.h> |
| 24 | #include <device/pci.h> |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 25 | #include <southbridge/intel/bd82x6x/pch.h> |
| 26 | |
| 27 | #ifndef __PRE_RAM__ |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 28 | #include <arch/coreboot_tables.h> |
| 29 | |
Duncan Laurie | c64947b | 2012-10-01 13:31:25 -0700 | [diff] [blame] | 30 | #define GPIO_COUNT 6 |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 31 | #define ACTIVE_LOW 0 |
| 32 | #define ACTIVE_HIGH 1 |
| 33 | |
| 34 | void fill_lb_gpios(struct lb_gpios *gpios) |
| 35 | { |
| 36 | device_t dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| 37 | u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 38 | |
| 39 | if (!gpio_base) |
| 40 | return; |
| 41 | |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 42 | u32 gp_lvl = inl(gpio_base + 0x0c); |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 43 | u32 gp_lvl2 = inl(gpio_base + 0x38); |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 44 | /* u32 gp_lvl3 = inl(gpio_base + 0x48); */ |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 45 | |
| 46 | gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio)); |
| 47 | gpios->count = GPIO_COUNT; |
| 48 | |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 49 | /* Write Protect: GPIO48 */ |
| 50 | gpios->gpios[0].port = 48; |
| 51 | gpios->gpios[0].polarity = ACTIVE_LOW; |
| 52 | gpios->gpios[0].value = (gp_lvl2 >> (48-32)) & 1; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 53 | strncpy((char *)gpios->gpios[0].name,"write protect", |
| 54 | GPIO_MAX_NAME_LENGTH); |
| 55 | |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 56 | /* Recovery: GPIO22 */ |
| 57 | gpios->gpios[1].port = 22; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 58 | gpios->gpios[1].polarity = ACTIVE_LOW; |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 59 | gpios->gpios[1].value = (gp_lvl >> 22) & 1; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 60 | strncpy((char *)gpios->gpios[1].name,"recovery", GPIO_MAX_NAME_LENGTH); |
| 61 | |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 62 | /* Developer: GPIO57 */ |
| 63 | gpios->gpios[2].port = 57; |
Duncan Laurie | c64947b | 2012-10-01 13:31:25 -0700 | [diff] [blame] | 64 | gpios->gpios[2].polarity = ACTIVE_LOW; |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 65 | gpios->gpios[2].value = (gp_lvl2 >> (57-32)) & 1; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 66 | strncpy((char *)gpios->gpios[2].name,"developer", GPIO_MAX_NAME_LENGTH); |
| 67 | |
| 68 | /* Hard code the lid switch GPIO to open. */ |
Duncan Laurie | c64947b | 2012-10-01 13:31:25 -0700 | [diff] [blame] | 69 | gpios->gpios[3].port = -1; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 70 | gpios->gpios[3].polarity = ACTIVE_HIGH; |
| 71 | gpios->gpios[3].value = 1; |
| 72 | strncpy((char *)gpios->gpios[3].name,"lid", GPIO_MAX_NAME_LENGTH); |
| 73 | |
| 74 | /* Power Button */ |
Duncan Laurie | c64947b | 2012-10-01 13:31:25 -0700 | [diff] [blame] | 75 | gpios->gpios[4].port = -1; |
| 76 | gpios->gpios[4].polarity = ACTIVE_HIGH; |
| 77 | gpios->gpios[4].value = 0; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 78 | strncpy((char *)gpios->gpios[4].name,"power", GPIO_MAX_NAME_LENGTH); |
Duncan Laurie | c64947b | 2012-10-01 13:31:25 -0700 | [diff] [blame] | 79 | |
| 80 | /* Did we load the VGA option ROM? */ |
| 81 | gpios->gpios[5].port = -1; |
| 82 | gpios->gpios[5].polarity = ACTIVE_HIGH; |
| 83 | gpios->gpios[5].value = oprom_is_loaded; |
| 84 | strncpy((char *)gpios->gpios[5].name,"oprom", GPIO_MAX_NAME_LENGTH); |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 85 | } |
| 86 | #endif |
| 87 | |
| 88 | int get_developer_mode_switch(void) |
| 89 | { |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 90 | device_t dev; |
| 91 | #ifdef __PRE_RAM__ |
| 92 | dev = PCI_DEV(0, 0x1f, 0); |
| 93 | #else |
| 94 | dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| 95 | #endif |
| 96 | u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 97 | u32 gp_lvl2 = inl(gpio_base + 0x38); |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 98 | |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 99 | /* Developer: GPIO17, active high */ |
| 100 | return (gp_lvl2 >> (57-32)) & 1; |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | int get_recovery_mode_switch(void) |
| 104 | { |
| 105 | device_t dev; |
| 106 | #ifdef __PRE_RAM__ |
| 107 | dev = PCI_DEV(0, 0x1f, 0); |
| 108 | #else |
| 109 | dev = dev_find_slot(0, PCI_DEVFN(0x1f,0)); |
| 110 | #endif |
| 111 | u16 gpio_base = pci_read_config32(dev, GPIOBASE) & 0xfffe; |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 112 | u32 gp_lvl = inl(gpio_base + 0x0c); |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 113 | |
Gabe Black | f40a259 | 2012-03-29 18:04:56 -0700 | [diff] [blame] | 114 | /* Recovery: GPIO22, active low */ |
| 115 | return !((gp_lvl >> 22) & 1); |
Stefan Reinauer | 6651da3 | 2012-04-27 23:16:30 +0200 | [diff] [blame] | 116 | } |
| 117 | |