1 /* 2 * (C) Copyright 2001 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * Misc functions 10 */ 11 #include <common.h> 12 #include <command.h> 13 #include <console.h> 14 15 static int do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 16 { 17 ulong start = get_timer(0); 18 ulong mdelay = 0; 19 ulong delay; 20 char *frpart; 21 22 if (argc != 2) 23 return CMD_RET_USAGE; 24 25 delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ; 26 27 frpart = strchr(argv[1], '.'); 28 29 if (frpart) { 30 uint mult = CONFIG_SYS_HZ / 10; 31 for (frpart++; *frpart != '\0' && mult > 0; frpart++) { 32 if (*frpart < '0' || *frpart > '9') { 33 mdelay = 0; 34 break; 35 } 36 mdelay += (*frpart - '0') * mult; 37 mult /= 10; 38 } 39 } 40 41 delay += mdelay; 42 43 while (get_timer(start) < delay) { 44 if (ctrlc()) 45 return (-1); 46 47 udelay(100); 48 } 49 50 return 0; 51 } 52 53 U_BOOT_CMD( 54 sleep , 2, 1, do_sleep, 55 "delay execution for some time", 56 "N\n" 57 " - delay execution for N seconds (N is _decimal_ and can be\n" 58 " fractional)" 59 ); 60 61 #ifdef CONFIG_CMD_TIMER 62 static int do_timer(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 63 { 64 static ulong start; 65 66 if (argc != 2) 67 return CMD_RET_USAGE; 68 69 if (!strcmp(argv[1], "start")) 70 start = get_timer(0); 71 72 if (!strcmp(argv[1], "get")) { 73 ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ; 74 printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000)); 75 } 76 77 return 0; 78 } 79 80 U_BOOT_CMD( 81 timer, 2, 1, do_timer, 82 "access the system timer", 83 "start - Reset the timer reference.\n" 84 "timer get - Print the time since 'start'." 85 ); 86 #endif 87