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 <errno.h> 11 #include <watchdog.h> 12 13 #ifndef CONFIG_BOOT_RETRY_MIN 14 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 15 #endif 16 17 static uint64_t endtime; /* must be set, default is instant timeout */ 18 static int retry_time = -1; /* -1 so can call readline before main_loop */ 19 20 /*************************************************************************** 21 * initialize command line timeout 22 */ 23 void bootretry_init_cmd_timeout(void) 24 { 25 char *s = env_get("bootretry"); 26 27 if (s != NULL) 28 retry_time = (int)simple_strtol(s, NULL, 10); 29 else 30 retry_time = CONFIG_BOOT_RETRY_TIME; 31 32 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 33 retry_time = CONFIG_BOOT_RETRY_MIN; 34 } 35 36 /*************************************************************************** 37 * reset command line timeout to retry_time seconds 38 */ 39 void bootretry_reset_cmd_timeout(void) 40 { 41 endtime = endtick(retry_time); 42 } 43 44 int bootretry_tstc_timeout(void) 45 { 46 while (!tstc()) { /* while no incoming data */ 47 if (retry_time >= 0 && get_ticks() > endtime) 48 return -ETIMEDOUT; 49 WATCHDOG_RESET(); 50 } 51 52 return 0; 53 } 54 55 void bootretry_dont_retry(void) 56 { 57 retry_time = -1; 58 } 59