1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <bootretry.h> 10 #include <cli.h> 11 #include <errno.h> 12 #include <watchdog.h> 13 14 #ifndef CONFIG_BOOT_RETRY_MIN 15 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 16 #endif 17 18 static uint64_t endtime; /* must be set, default is instant timeout */ 19 static int retry_time = -1; /* -1 so can call readline before main_loop */ 20 21 /*************************************************************************** 22 * initialize command line timeout 23 */ 24 void bootretry_init_cmd_timeout(void) 25 { 26 char *s = getenv("bootretry"); 27 28 if (s != NULL) 29 retry_time = (int)simple_strtol(s, NULL, 10); 30 else 31 retry_time = CONFIG_BOOT_RETRY_TIME; 32 33 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 34 retry_time = CONFIG_BOOT_RETRY_MIN; 35 } 36 37 /*************************************************************************** 38 * reset command line timeout to retry_time seconds 39 */ 40 void bootretry_reset_cmd_timeout(void) 41 { 42 endtime = endtick(retry_time); 43 } 44 45 int bootretry_tstc_timeout(void) 46 { 47 while (!tstc()) { /* while no incoming data */ 48 if (retry_time >= 0 && get_ticks() > endtime) 49 return -ETIMEDOUT; 50 WATCHDOG_RESET(); 51 } 52 53 return 0; 54 } 55 56 void bootretry_dont_retry(void) 57 { 58 retry_time = -1; 59 } 60