1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2001 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 */ 6 7 /* 8 * Misc functions 9 */ 10 #include <common.h> 11 #include <command.h> 12 #include <console.h> 13 14 static int do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 15 { 16 ulong start = get_timer(0); 17 ulong mdelay = 0; 18 ulong delay; 19 char *frpart; 20 21 if (argc != 2) 22 return CMD_RET_USAGE; 23 24 delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ; 25 26 frpart = strchr(argv[1], '.'); 27 28 if (frpart) { 29 uint mult = CONFIG_SYS_HZ / 10; 30 for (frpart++; *frpart != '\0' && mult > 0; frpart++) { 31 if (*frpart < '0' || *frpart > '9') { 32 mdelay = 0; 33 break; 34 } 35 mdelay += (*frpart - '0') * mult; 36 mult /= 10; 37 } 38 } 39 40 delay += mdelay; 41 42 while (get_timer(start) < delay) { 43 if (ctrlc()) 44 return (-1); 45 46 udelay(100); 47 } 48 49 return 0; 50 } 51 52 U_BOOT_CMD( 53 sleep , 2, 1, do_sleep, 54 "delay execution for some time", 55 "N\n" 56 " - delay execution for N seconds (N is _decimal_ and can be\n" 57 " fractional)" 58 ); 59 60 #ifdef CONFIG_CMD_TIMER 61 static int do_timer(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 62 { 63 static ulong start; 64 65 if (argc != 2) 66 return CMD_RET_USAGE; 67 68 if (!strcmp(argv[1], "start")) 69 start = get_timer(0); 70 71 if (!strcmp(argv[1], "get")) { 72 ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ; 73 printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000)); 74 } 75 76 return 0; 77 } 78 79 U_BOOT_CMD( 80 timer, 2, 1, do_timer, 81 "access the system timer", 82 "start - Reset the timer reference.\n" 83 "timer get - Print the time since 'start'." 84 ); 85 #endif 86