1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2d1389403SSimon Glass /*
3d1389403SSimon Glass * (C) Copyright 2015 Google, Inc
4d1389403SSimon Glass */
5d1389403SSimon Glass
6d1389403SSimon Glass #include <common.h>
7d1389403SSimon Glass #include <command.h>
8f215287bSSimon Glass #include <div64.h>
9d1389403SSimon Glass #include "dhry.h"
10d1389403SSimon Glass
do_dhry(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])11d1389403SSimon Glass static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
12d1389403SSimon Glass {
13f215287bSSimon Glass ulong start, duration, vax_mips;
14f215287bSSimon Glass u64 dhry_per_sec;
15d1389403SSimon Glass int iterations = 1000000;
16d1389403SSimon Glass
17d1389403SSimon Glass if (argc > 1)
18d1389403SSimon Glass iterations = simple_strtoul(argv[1], NULL, 10);
19d1389403SSimon Glass
20d1389403SSimon Glass start = get_timer(0);
21d1389403SSimon Glass dhry(iterations);
22d1389403SSimon Glass duration = get_timer(start);
23f215287bSSimon Glass dhry_per_sec = lldiv(iterations * 1000ULL, duration);
24f23baa57STom Rini vax_mips = lldiv(dhry_per_sec, 1757);
25d1389403SSimon Glass printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations,
26f215287bSSimon Glass duration, (ulong)dhry_per_sec, vax_mips);
27d1389403SSimon Glass
28d1389403SSimon Glass return 0;
29d1389403SSimon Glass }
30d1389403SSimon Glass
31d1389403SSimon Glass U_BOOT_CMD(
32d1389403SSimon Glass dhry, 2, 1, do_dhry,
33d1389403SSimon Glass "[iterations] - run dhrystone benchmark",
34d1389403SSimon Glass "\n - run the Dhrystone 2.1 benchmark, a rough measure of CPU speed\n"
35d1389403SSimon Glass );
36