99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Rockchip Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <boot/coreboot_tables.h>
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#include <console/console.h>
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#include <gpio.h>
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#include <string.h>
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#include <vendorcode/google/chromeos/chromeos.h>
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#include "board.h"
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#define GPIO_WP GPIO(7, A, 6)
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#define GPIO_POWER GPIO(0, A, 5)
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#define GPIO_RECOVERY GPIO(0, B, 1)
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void setup_chromeos_gpios(void)
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{
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gpio_input(GPIO_WP);
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gpio_input(GPIO_POWER);
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gpio_input_pullup(GPIO_RECOVERY);
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}
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void fill_lb_gpios(struct lb_gpios *gpios)
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{
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int count = 0;
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/* Write Protect: active low */
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gpios->gpios[count].port = GPIO_WP.raw;
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gpios->gpios[count].polarity = ACTIVE_LOW;
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gpios->gpios[count].value = gpio_get(GPIO_WP);
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strncpy((char *)gpios->gpios[count].name, "write protect",
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GPIO_MAX_NAME_LENGTH);
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count++;
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/* Recovery: active low */
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gpios->gpios[count].port = GPIO_RECOVERY.raw;
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gpios->gpios[count].polarity = ACTIVE_LOW;
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gpios->gpios[count].value = gpio_get(GPIO_RECOVERY);
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strncpy((char *)gpios->gpios[count].name, "recovery",
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GPIO_MAX_NAME_LENGTH);
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count++;
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/* Power Button: GPIO active low */
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gpios->gpios[count].port = GPIO_POWER.raw;
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gpios->gpios[count].polarity = ACTIVE_LOW;
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gpios->gpios[count].value = -1;
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strncpy((char *)gpios->gpios[count].name, "power",
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GPIO_MAX_NAME_LENGTH);
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count++;
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/* Developer: GPIO active high */
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gpios->gpios[count].port = -1;
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gpios->gpios[count].polarity = ACTIVE_HIGH;
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gpios->gpios[count].value = get_developer_mode_switch();
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strncpy((char *)gpios->gpios[count].name, "developer",
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GPIO_MAX_NAME_LENGTH);
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count++;
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/* Reset: GPIO active high (output) */
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gpios->gpios[count].port = GPIO_RESET.raw;
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gpios->gpios[count].polarity = ACTIVE_HIGH;
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gpios->gpios[count].value = -1;
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strncpy((char *)gpios->gpios[count].name, "reset",
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GPIO_MAX_NAME_LENGTH);
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count++;
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gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
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gpios->count = count;
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printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
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}
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int get_developer_mode_switch(void)
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{
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return 0;
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}
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int get_recovery_mode_switch(void)
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{
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return !gpio_get(GPIO_RECOVERY);
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}
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int get_write_protect_state(void)
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{
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return !gpio_get(GPIO_WP);
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}
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