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/*
* This file is part of the coreboot project.
*
*
* 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 <soc/power.h>
#include <soc/wakeup.h>
void wakeup(void)
{
if (wakeup_need_reset())
power_reset();
power_init(); /* Ensure ps_hold_setup() for early wakeup. */
power_exit_wakeup();
/* Should never return. If we do, reset. */
power_reset();
}
int get_wakeup_state(void)
{
uint32_t status = power_read_reset_status();
/* DIDLE/LPA can be resumed without clock reset (ex, bootblock),
* and SLEEP requires resetting clock (should be done in ROM stage).
*/
if (status == S5P_CHECK_DIDLE || status == S5P_CHECK_LPA)
return WAKEUP_DIRECT;
if (status == S5P_CHECK_SLEEP)
return WAKEUP_NEED_CLOCK_RESET;
return IS_NOT_WAKEUP;
}
void wakeup_enable_uart(void)
{
power_release_uart_retention();
}
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