1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2015 Google, Inc
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <command.h>
9*4882a593Smuzhiyun #include <div64.h>
10*4882a593Smuzhiyun #include "dhry.h"
11*4882a593Smuzhiyun
do_dhry(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])12*4882a593Smuzhiyun static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun ulong start, duration, vax_mips;
15*4882a593Smuzhiyun u64 dhry_per_sec;
16*4882a593Smuzhiyun int iterations = 1000000;
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun if (argc > 1)
19*4882a593Smuzhiyun iterations = simple_strtoul(argv[1], NULL, 10);
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun start = get_timer(0);
22*4882a593Smuzhiyun dhry(iterations);
23*4882a593Smuzhiyun duration = get_timer(start);
24*4882a593Smuzhiyun dhry_per_sec = lldiv(iterations * 1000ULL, duration);
25*4882a593Smuzhiyun vax_mips = lldiv(dhry_per_sec, 1757);
26*4882a593Smuzhiyun printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations,
27*4882a593Smuzhiyun duration, (ulong)dhry_per_sec, vax_mips);
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun return 0;
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun U_BOOT_CMD(
33*4882a593Smuzhiyun dhry, 2, 1, do_dhry,
34*4882a593Smuzhiyun "[iterations] - run dhrystone benchmark",
35*4882a593Smuzhiyun "\n - run the Dhrystone 2.1 benchmark, a rough measure of CPU speed\n"
36*4882a593Smuzhiyun );
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