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
do_sleep(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
do_timer(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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