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#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 */ 25void bootretry_init_cmd_timeout(void) 26{ 27 char *s = env_get("bootretry"); 28 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 */ 41void bootretry_reset_cmd_timeout(void) 42{ 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} 61