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cheza: board-level GPIO support 

Change-Id: I64e79904c7ad95091ea29d9f80444c4e3b493471
Signed-off-by: T Michael Turney <mturney@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/29298
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
T Michael Turney 2018-10-26 07:03:14 -07:00 committed by Nico Huber
parent 82d6f90c5f
commit 4ba64c99e3
3 changed files with 59 additions and 1 deletions
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30
src/mainboard/google/cheza/board.h Normal file
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@ -0,0 +1,30 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#ifndef __COREBOOT_SRC_MAINBOARD_GOOGLE_CHEZA_BOARD_H
#define __COREBOOT_SRC_MAINBOARD_GOOGLE_CHEZA_BOARD_H
#include <gpio.h>
#include <soc/gpio.h>
#define GPIO_EC_IN_RW GPIO(11)
#define GPIO_AP_EC_INT GPIO(122)
#define GPIO_AP_SUSPEND GPIO(126)
#define GPIO_WP_STATE GPIO(128)
#define GPIO_H1_AP_INT GPIO(129)
void setup_chromeos_gpios(void);
#endif /* ! __COREBOOT_SRC_MAINBOARD_GOOGLE_CHEZA_BOARD_H */

3
src/mainboard/google/cheza/bootblock.c
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@ -15,8 +15,9 @@
#include <bootblock_common.h>
#include <timestamp.h>
#include "board.h"
void bootblock_mainboard_init(void)
{
setup_chromeos_gpios();
}

27
src/mainboard/google/cheza/chromeos.c
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@ -14,8 +14,35 @@
*/
#include <boot/coreboot_tables.h>
#include <bootmode.h>
#include "board.h"
int get_write_protect_state(void)
{
return !gpio_get(GPIO_WP_STATE);
}
void setup_chromeos_gpios(void)
{
gpio_input_pullup(GPIO_EC_IN_RW);
gpio_input_pullup(GPIO_AP_EC_INT);
gpio_output(GPIO_AP_SUSPEND, 1);
gpio_input(GPIO_WP_STATE);
gpio_input_pullup(GPIO_H1_AP_INT);
}
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
{GPIO_EC_IN_RW.addr, ACTIVE_LOW, gpio_get(GPIO_EC_IN_RW),
"EC in RW"},
{GPIO_AP_EC_INT.addr, ACTIVE_LOW, gpio_get(GPIO_AP_EC_INT),
"EC interrupt"},
{GPIO_WP_STATE.addr, ACTIVE_LOW, gpio_get(GPIO_WP_STATE),
"write protect"},
{GPIO_H1_AP_INT.addr, ACTIVE_LOW, gpio_get(GPIO_H1_AP_INT),
"TPM interrupt"},
};
lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}