// SPDX-License-Identifier: GPL-2.0+

/*

 * (C) Copyright 2015 Google, Inc

 */

#include <command.h>

#include <div64.h>

#include <time.h>

#include <vsprintf.h>

#include "dhry.h"

static int do_dhry(struct cmd_tbl *cmdtp, int flag, int argc,

       char *const argv[])

{

  ulong start, duration, vax_mips;

  u64 dhry_per_sec;

  int iterations = 1000000;

  if (argc > 1)

    iterations = dectoul(argv[1], NULL);

  start = get_timer(0);

  dhry(iterations);

  duration = get_timer(start);

  dhry_per_sec = lldiv(iterations * 1000ULL, duration);

  vax_mips = lldiv(dhry_per_sec, 1757);

  printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations,

         duration, (ulong)dhry_per_sec, vax_mips);

  return 0;

}

U_BOOT_CMD(

  dhry, 2,  1,  do_dhry,

  "[iterations] - run dhrystone benchmark",

  "\n    - run the Dhrystone 2.1 benchmark, a rough measure of CPU speed\n"

);