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 
15 static uint64_t endtime;  /* must be set, default is instant timeout */
16 static int      retry_time = -1; /* -1 so can call readline before main_loop */
17 
18 /***************************************************************************
19  * initialize command line timeout
20  */
bootretry_init_cmd_timeout(void)21 void 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  */
bootretry_reset_cmd_timeout(void)37 void bootretry_reset_cmd_timeout(void)
38 {
39 	endtime = endtick(retry_time);
40 }
41 
bootretry_tstc_timeout(void)42 int 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 
bootretry_dont_retry(void)53 void bootretry_dont_retry(void)
54 {
55 	retry_time = -1;
56 }
57