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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2019 Patrick Rudolph <siro@das-labor.org>
*
* 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.
*/
#include <ec/acpi/ec.h>
#include <bootmode.h>
#include <timer.h>
#include <delay.h>
#include "h8.h"
/**
* HACK: Use Fn-Key as recovery mode switch.
* Wait for sense register ready and read Fn-Key state.
*/
int get_recovery_mode_switch(void)
{
struct stopwatch sw;
if (!CONFIG(H8_FN_KEY_AS_VBOOT_RECOVERY_SW))
return 0;
/* Tests showed that it takes:
* - 700msec on Lenovo T500 from AC power on
* - less than 150msec on Lenovo T520 from AC power on
*/
stopwatch_init_msecs_expire(&sw, 1000);
while (!stopwatch_expired(&sw) && !h8_get_sense_ready())
mdelay(1);
if (!h8_get_sense_ready())
return 0;
return h8_get_fn_key();
}
/**
* Only used if CONFIG_CHROMEOS is set.
* Always zero as the #WP pin of the flash is tied high.
*/
int get_write_protect_state(void)
{
return 0;
}
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