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/*
* This file is part of the coreboot project.
*
* Copyright 2013 Google Inc.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/cache.h>
#include <console/console.h>
#include "power.h"
#include "wakeup.h"
void wakeup(void)
{
if (wakeup_need_reset())
power_reset();
power_init(); /* Ensure ps_hold_setup() for early wakeup. */
dcache_mmu_disable();
icache_invalidate_all();
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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