2cb399625e
The gpio table is only used by depthcharge, and depthcharge rarely has a need for the "recovery" gpio. On a few boards it does use the gpio as a signal for confirming physical presence, so on that boards we'll advertise the board as "presence". All these strings probably should have been #defines to help avoid typos (e.g., the "ec_in_rw" in stout seems questionable since everybody else uses "EC in RW"). Cq-Depend: chromium:1580454 BUG=b:129471321 BRANCH=None TEST=Local compile and flash (with corresponding changes to depthcharge) to 2 systems, one with a "presence" gpio and another without. Confirmed that both systems could enter dev mode. Change-Id: Id6d62d9e48d3e6646cbc1277ea53f0ca95dd849e Signed-off-by: Matt Delco <delco@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32718 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/*
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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 <gpio.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_SERVO GPIO(0, B, 1)
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#define GPIO_RECOVERY_PUSHKEY GPIO(7, 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_SERVO);
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gpio_input_pullup(GPIO_RECOVERY_PUSHKEY);
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}
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void fill_lb_gpios(struct lb_gpios *gpios)
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{
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struct lb_gpio chromeos_gpios[] = {
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{GPIO_WP.raw, ACTIVE_LOW,
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!get_write_protect_state(), "write protect"},
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/* Note for early development, we want to support both servo
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* and pushkey recovery buttons in firmware boot stages. */
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{GPIO_RECOVERY_PUSHKEY.raw, ACTIVE_LOW,
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!get_recovery_mode_switch(), "presence"},
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{GPIO_POWER.raw, ACTIVE_LOW, -1, "power"},
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{GPIO_RESET.raw, ACTIVE_HIGH, -1, "reset"},
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};
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lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
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}
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int get_recovery_mode_switch(void)
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{
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// Both RECOVERY_SERVO and RECOVERY_PUSHKEY are low active.
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return !(gpio_get(GPIO_RECOVERY_SERVO) &&
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gpio_get(GPIO_RECOVERY_PUSHKEY));
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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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