[people/ms/u-boot.git] / lib / dhry / cmd_dhry.c

/*
 * (C) Copyright 2015 Google, Inc
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <div64.h>
#include "dhry.h"

static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	ulong start, duration, vax_mips;
	u64 dhry_per_sec;
	int iterations = 1000000;

	if (argc > 1)
		iterations = simple_strtoul(argv[1], NULL, 10);

	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"
);
Commit	Line	Data
d1389403 SG	1	/*
	2	* (C) Copyright 2015 Google, Inc
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	#include <common.h>
	8	#include <command.h>
f215287b	9	#include <div64.h>
d1389403 SG	10	#include "dhry.h"
	11
	12	static int do_dhry(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	13	{
f215287b SG	14	ulong start, duration, vax_mips;
f215287b SG	15	u64 dhry_per_sec;
d1389403 SG	16	int iterations = 1000000;
	17
	18	if (argc > 1)
	19	iterations = simple_strtoul(argv[1], NULL, 10);
	20
	21	start = get_timer(0);
	22	dhry(iterations);
	23	duration = get_timer(start);
f215287b	24	dhry_per_sec = lldiv(iterations * 1000ULL, duration);
f23baa57	25	vax_mips = lldiv(dhry_per_sec, 1757);
d1389403	26	printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations,
f215287b	27	duration, (ulong)dhry_per_sec, vax_mips);
d1389403 SG	28
	29	return 0;
	30	}
	31
	32	U_BOOT_CMD(
	33	dhry, 2, 1, do_dhry,
	34	"[iterations] - run dhrystone benchmark",
	35	"\n - run the Dhrystone 2.1 benchmark, a rough measure of CPU speed\n"
	36	);