| Simon Glass | 99dbe4b | 2015-06-23 15:38:23 -0600 | [diff] [blame] | 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> |
| 9 | #include "dhry.h" |
| 10 | |
| 11 | static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 12 | { |
| 13 | ulong start, duration, dhry_per_sec, vax_mips; |
| 14 | int iterations = 1000000; |
| 15 | |
| 16 | if (argc > 1) |
| 17 | iterations = simple_strtoul(argv[1], NULL, 10); |
| 18 | |
| 19 | start = get_timer(0); |
| 20 | dhry(iterations); |
| 21 | duration = get_timer(start); |
| 22 | dhry_per_sec = iterations * 1000 / duration; |
| 23 | vax_mips = dhry_per_sec / 1757; |
| 24 | printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations, |
| 25 | duration, dhry_per_sec, vax_mips); |
| 26 | |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | U_BOOT_CMD( |
| 31 | dhry, 2, 1, do_dhry, |
| 32 | "[iterations] - run dhrystone benchmark", |
| 33 | "\n - run the Dhrystone 2.1 benchmark, a rough measure of CPU speed\n" |
| 34 | ); |