1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2000
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7#include <common.h>
8#include <bootretry.h>
9#include <cli.h>
10#include <env.h>
11#include <errno.h>
12#include <time.h>
13#include <watchdog.h>
14
15static uint64_t endtime;  /* must be set, default is instant timeout */
16static int      retry_time = -1; /* -1 so can call readline before main_loop */
17
18/***************************************************************************
19 * initialize command line timeout
20 */
21void bootretry_init_cmd_timeout(void)
22{
23	char *s = env_get("bootretry");
24
25	if (s != NULL)
26		retry_time = (int)simple_strtol(s, NULL, 10);
27	else
28		retry_time = CONFIG_BOOT_RETRY_TIME;
29
30	if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
31		retry_time = CONFIG_BOOT_RETRY_MIN;
32}
33
34/***************************************************************************
35 * reset command line timeout to retry_time seconds
36 */
37void bootretry_reset_cmd_timeout(void)
38{
39	endtime = endtick(retry_time);
40}
41
42int bootretry_tstc_timeout(void)
43{
44	while (!tstc()) {	/* while no incoming data */
45		if (retry_time >= 0 && get_ticks() > endtime)
46			return -ETIMEDOUT;
47		schedule();
48	}
49
50	return 0;
51}
52
53void bootretry_dont_retry(void)
54{
55	retry_time = -1;
56}
57