2521211753
Use Fn-Key as recovery mode switch. Tested using Icb7b263ed86551cc53e1db7babccaca6b3ae2fe6. Change-Id: I2c682431b3f09839db265259205104bd9ef4abfc Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32607 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2019 Patrick Rudolph <siro@das-labor.org>
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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 <ec/acpi/ec.h>
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#include <bootmode.h>
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#include <timer.h>
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#include <delay.h>
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#include "h8.h"
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/**
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* HACK: Use Fn-Key as recovery mode switch.
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* Wait for sense register ready and read Fn-Key state.
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*/
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int get_recovery_mode_switch(void)
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{
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struct stopwatch sw;
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if (!CONFIG(H8_FN_KEY_AS_VBOOT_RECOVERY_SW))
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return 0;
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/* Tests showed that it takes:
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* - 700msec on Lenovo T500 from AC power on
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* - less than 150msec on Lenovo T520 from AC power on
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*/
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stopwatch_init_msecs_expire(&sw, 1000);
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while (!stopwatch_expired(&sw) && !h8_get_sense_ready())
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mdelay(1);
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if (!h8_get_sense_ready())
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return 0;
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return h8_get_fn_key();
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}
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/**
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* Only used if CONFIG_CHROMEOS is set.
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* Always zero as the #WP pin of the flash is tied high.
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*/
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int get_write_protect_state(void)
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{
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return 0;
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}
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