blob: dac891fbc5e3fa0cc01a15e811a2442518eee50c [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glass0098e172014-04-10 20:01:30 -06002/*
3 * (C) Copyright 2000
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
Simon Glass0098e172014-04-10 20:01:30 -06005 */
6
7#include <common.h>
8#include <bootretry.h>
9#include <cli.h>
Simon Glass7b51b572019-08-01 09:46:52 -060010#include <env.h>
Simon Glass0098e172014-04-10 20:01:30 -060011#include <errno.h>
Simon Glass10453152019-11-14 12:57:30 -070012#include <time.h>
Simon Glass0098e172014-04-10 20:01:30 -060013#include <watchdog.h>
14
15#ifndef CONFIG_BOOT_RETRY_MIN
16#define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
17#endif
18
19static uint64_t endtime; /* must be set, default is instant timeout */
20static int retry_time = -1; /* -1 so can call readline before main_loop */
21
22/***************************************************************************
23 * initialize command line timeout
24 */
Simon Glassb26440f2014-04-10 20:01:31 -060025void bootretry_init_cmd_timeout(void)
Simon Glass0098e172014-04-10 20:01:30 -060026{
Simon Glass00caae62017-08-03 12:22:12 -060027 char *s = env_get("bootretry");
Simon Glass0098e172014-04-10 20:01:30 -060028
29 if (s != NULL)
30 retry_time = (int)simple_strtol(s, NULL, 10);
31 else
32 retry_time = CONFIG_BOOT_RETRY_TIME;
33
34 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
35 retry_time = CONFIG_BOOT_RETRY_MIN;
36}
37
38/***************************************************************************
39 * reset command line timeout to retry_time seconds
40 */
Simon Glassb26440f2014-04-10 20:01:31 -060041void bootretry_reset_cmd_timeout(void)
Simon Glass0098e172014-04-10 20:01:30 -060042{
43 endtime = endtick(retry_time);
44}
45
46int bootretry_tstc_timeout(void)
47{
48 while (!tstc()) { /* while no incoming data */
49 if (retry_time >= 0 && get_ticks() > endtime)
50 return -ETIMEDOUT;
51 WATCHDOG_RESET();
52 }
53
54 return 0;
55}
56
57void bootretry_dont_retry(void)
58{
59 retry_time = -1;
60}