diff options
Diffstat (limited to 'src/mainboard/google/smaug/chromeos.c')
-rw-r--r-- | src/mainboard/google/smaug/chromeos.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mainboard/google/smaug/chromeos.c b/src/mainboard/google/smaug/chromeos.c new file mode 100644 index 0000000000..8ae5ac09ae --- /dev/null +++ b/src/mainboard/google/smaug/chromeos.c @@ -0,0 +1,111 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 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. + */ + +#include <boardid.h> +#include <boot/coreboot_tables.h> +#include <console/console.h> +#include <ec/google/chromeec/ec.h> +#include <ec/google/chromeec/ec_commands.h> +#include <string.h> +#include <vendorcode/google/chromeos/chromeos.h> + +#include "gpio.h" + +void fill_lb_gpios(struct lb_gpios *gpios) +{ + int count = 0; + + /* Write Protect: active low */ + gpios->gpios[count].port = WRITE_PROTECT_L; + gpios->gpios[count].polarity = ACTIVE_LOW; + gpios->gpios[count].value = gpio_get(WRITE_PROTECT_L); + strncpy((char *)gpios->gpios[count].name, "write protect", + GPIO_MAX_NAME_LENGTH); + count++; + + /* Recovery: active high */ + gpios->gpios[count].port = -1; + gpios->gpios[count].polarity = ACTIVE_HIGH; + gpios->gpios[count].value = get_recovery_mode_switch(); + strncpy((char *)gpios->gpios[count].name, "recovery", + GPIO_MAX_NAME_LENGTH); + count++; + + /* TODO(furquan): add lid switch */ + + /* Power: active low / high depending on board id */ + gpios->gpios[count].port = POWER_BUTTON; + gpios->gpios[count].polarity = ACTIVE_LOW; + gpios->gpios[count].value = -1; + strncpy((char *)gpios->gpios[count].name, "power", + GPIO_MAX_NAME_LENGTH); + count++; + + /* Developer: virtual GPIO active high */ + gpios->gpios[count].port = -1; + gpios->gpios[count].polarity = ACTIVE_HIGH; + gpios->gpios[count].value = get_developer_mode_switch(); + strncpy((char *)gpios->gpios[count].name, "developer", + GPIO_MAX_NAME_LENGTH); + count++; + + /* EC in RW: active high */ + gpios->gpios[count].port = EC_IN_RW; + gpios->gpios[count].polarity = ACTIVE_HIGH; + gpios->gpios[count].value = -1; + strncpy((char *)gpios->gpios[count].name, "EC in RW", + GPIO_MAX_NAME_LENGTH); + count++; + + /* Reset: active low (output) */ + gpios->gpios[count].port = AP_SYS_RESET_L; + gpios->gpios[count].polarity = ACTIVE_LOW; + gpios->gpios[count].value = -1; + strncpy((char *)gpios->gpios[count].name, "reset", + GPIO_MAX_NAME_LENGTH); + count++; + + gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio)); + gpios->count = count; + + printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size); +} + +int get_developer_mode_switch(void) +{ + return 0; +} + +int get_recovery_mode_switch(void) +{ + uint32_t ec_events; + + ec_events = google_chromeec_get_events_b(); + + /* Enter recovery mode either on keyboard recovery / fastboot event. */ + return !!((ec_events & + EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)) || + (ec_events & + EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_FASTBOOT))); +} + +int get_write_protect_state(void) +{ + return !gpio_get(WRITE_PROTECT_L); +} |