534beb34c9
Enabled the boot_time test on ARM SoCs, set __start_time_stamp on ARM since we don't have a free running counter similar to TSC on x86. Also moved to printing the values out as %u to increase the range of values. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* Copyright (c) 2013-2015 Wind River Systems, Inc.
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* Copyright (c) 2016 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Measure boot time
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*
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* Measuring the boot time
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* 1. From reset to kernel's __start
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* 2. From __start to main()
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* 3. From __start to task
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* 4. From __start to idle
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*/
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#include <zephyr.h>
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#include <tc_util.h>
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/* externs */
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extern u64_t __start_time_stamp; /* timestamp when kernel begins executing */
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extern u64_t __main_time_stamp; /* timestamp when main() begins executing */
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extern u64_t __idle_time_stamp; /* timestamp when CPU went idle */
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void main(void)
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{
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u64_t task_time_stamp; /* timestamp at beginning of first task */
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u64_t _start_us; /* being of __start timestamp in us */
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u64_t main_us; /* begin of main timestamp in us */
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u64_t task_us; /* begin of task timestamp in us */
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u64_t s_main_time_stamp; /* __start->main timestamp */
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u64_t s_task_time_stamp; /*__start->task timestamp */
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u64_t idle_us; /* begin of idle timestamp in us */
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u64_t s_idle_time_stamp; /*__start->idle timestamp */
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task_time_stamp = (u64_t)k_cycle_get_32();
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/*
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* Go to sleep for 1 tick in order to timestamp when idle thread halts.
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*/
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k_sleep(1);
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int freq = CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC / 1000000;
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_start_us = __start_time_stamp / freq;
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s_main_time_stamp = __main_time_stamp - __start_time_stamp;
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main_us = s_main_time_stamp / freq;
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s_task_time_stamp = task_time_stamp - __start_time_stamp;
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task_us = s_task_time_stamp / freq;
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s_idle_time_stamp = __idle_time_stamp - __start_time_stamp;
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idle_us = s_idle_time_stamp / freq;
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/* Indicate start for sanity test suite */
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TC_START("Boot Time Measurement");
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/* Only print lower 32bit of time result */
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TC_PRINT("Boot Result: Clock Frequency: %d MHz\n",
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freq);
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TC_PRINT("__start : %u cycles, %u us\n",
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(u32_t)(__start_time_stamp & 0xFFFFFFFFULL),
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(u32_t) (_start_us & 0xFFFFFFFFULL));
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TC_PRINT("_start->main(): %u cycles, %u us\n",
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(u32_t)(s_main_time_stamp & 0xFFFFFFFFULL),
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(u32_t) (main_us & 0xFFFFFFFFULL));
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TC_PRINT("_start->task : %u cycles, %u us\n",
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(u32_t)(s_task_time_stamp & 0xFFFFFFFFULL),
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(u32_t) (task_us & 0xFFFFFFFFULL));
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TC_PRINT("_start->idle : %u cycles, %u us\n",
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(u32_t)(s_idle_time_stamp & 0xFFFFFFFFULL),
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(u32_t) (idle_us & 0xFFFFFFFFULL));
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TC_PRINT("Boot Time Measurement finished\n");
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/* for sanity regression test utility. */
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TC_END_RESULT(TC_PASS);
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TC_END_REPORT(TC_PASS);
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}
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