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Updated portme file to include counters MTIME and MINSTRET. Timer currently set to read milliseconds running at 100MHZ, but this can be changed by setting a different clock speed in the testbench sv file and manipulating TIMER_RES_DIVIDER on line 120

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Abe 2021-07-06 23:35:47 -04:00
parent b757c96b2d
commit 8dc40e988e
1 changed files with 12 additions and 1 deletions
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13
riscv-coremark/riscv64-baremetal/core_portme.c
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@ -126,6 +126,15 @@ void portable_free(void *p) {
/** Define Host specific (POSIX), or target specific global time variables. */
static CORETIMETYPE start_time_val, stop_time_val;
/* Function: minstret
This function will count the number of instructions.
*/
void minstretFunc(void)
{
unsigned long minstretAttempt = read_csr(minstret);
ee_printf("Minstret is %lu\n", minstretAttempt);
}
/* Function: start_time
This function will be called right before starting the timed portion of the benchmark.
@ -133,6 +142,7 @@ static CORETIMETYPE start_time_val, stop_time_val;
or zeroing some system parameters - e.g. setting the cpu clocks cycles to 0.
*/
void start_time(void) {
minstretFunc();
GETMYTIME(start_time_val);
ee_printf("Timer started\n");
ee_printf(" MTIME: %u\n", start_time_val);
@ -157,6 +167,7 @@ void stop_time(void) {
asm volatile("int3");/*1 */
#endif
GETMYTIME(stop_time_val);
minstretFunc();
ee_printf("Timer stopped\n");
ee_printf(" MTIME: %u\n", stop_time_val);
}
@ -183,7 +194,7 @@ CORE_TICKS get_time(void) {
secs_ret time_in_secs(CORE_TICKS ticks) {
secs_ret retval=((secs_ret)ticks) / (secs_ret)EE_TICKS_PER_SEC;
int retvalint = (int)retval;
ee_printf(" RETURN VALUE FROM TIME IN SECS FUNCTION: %d\n", retvalint);
ee_printf("RETURN VALUE FROM TIME IN SECS FUNCTION: %d\n", retvalint);
return retval;
}
#else