src/mainboard/google/foster/chromeos.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright 2014 Google Inc.
   5  * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <boot/coreboot_tables.h>
  18 #include <console/console.h>
  19 #include <ec/google/chromeec/ec.h>
  20 #include <ec/google/chromeec/ec_commands.h>
  21 #include <gpio.h>
  22 #include <string.h>
  23 #include <vendorcode/google/chromeos/chromeos.h>
  24
  25 void fill_lb_gpios(struct lb_gpios *gpios)
  26 {
  27         int count = 0;
  28
  29         /* TBD(twarren@nvidia.com): Any analogs for these on Foster-FFD? */
  30
  31         /* Write Protect: active low */
  32         gpios->gpios[count].port = -1;
  33         gpios->gpios[count].polarity = ACTIVE_LOW;
  34         gpios->gpios[count].value = get_write_protect_state();
  35         strncpy((char *)gpios->gpios[count].name, "write protect",
  36                 GPIO_MAX_NAME_LENGTH);
  37         count++;
  38
  39         /* Recovery: active high */
  40         gpios->gpios[count].port = -1;
  41         gpios->gpios[count].polarity = ACTIVE_HIGH;
  42         gpios->gpios[count].value = get_recovery_mode_switch();
  43         strncpy((char *)gpios->gpios[count].name, "recovery",
  44                 GPIO_MAX_NAME_LENGTH);
  45         count++;
  46
  47         /* TODO: Power: active low / high depending on board id */
  48         gpios->gpios[count].port = GPIO(X5);
  49         gpios->gpios[count].polarity = ACTIVE_LOW;
  50         gpios->gpios[count].value = -1;
  51         strncpy((char *)gpios->gpios[count].name, "power",
  52                 GPIO_MAX_NAME_LENGTH);
  53         count++;
  54
  55         /* Developer: virtual GPIO active high */
  56         gpios->gpios[count].port = -1;
  57         gpios->gpios[count].polarity = ACTIVE_HIGH;
  58         gpios->gpios[count].value = get_developer_mode_switch();
  59         strncpy((char *)gpios->gpios[count].name, "developer",
  60                 GPIO_MAX_NAME_LENGTH);
  61         count++;
  62
  63         /* TODO: Reset: active low (output) */
  64         gpios->gpios[count].port = GPIO(I5);
  65         gpios->gpios[count].polarity = ACTIVE_LOW;
  66         gpios->gpios[count].value = -1;
  67         strncpy((char *)gpios->gpios[count].name, "reset",
  68                 GPIO_MAX_NAME_LENGTH);
  69         count++;
  70
  71         gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
  72         gpios->count = count;
  73
  74         printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
  75 }
  76
  77 int get_developer_mode_switch(void)
  78 {
  79         return 0;
  80 }
  81
  82 int get_recovery_mode_switch(void)
  83 {
  84 #if CONFIG_EC_GOOGLE_CHROMEEC
  85         uint32_t ec_events;
  86
  87         ec_events = google_chromeec_get_events_b();
  88         return !!(ec_events &
  89                   EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
  90 #else
  91         return 0;
  92 #endif
  93 }
  94
  95 int get_write_protect_state(void)
  96 {
  97         return 0;
  98 }