blob: 2aa24497f708932b9c477750cabf81f49646f11a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#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();
}
|
