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Updated timing functions to read from MTIME register, TICKS_PER_SEC set to 10000 so timer reads millisecs

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Abe 2021-06-25 16:42:03 -04:00
parent 2ab29c74f2
commit 12eff2bc5f
1 changed files with 13 additions and 5 deletions
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18
riscv-coremark/riscv64-baremetal/core_portme.c
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@ -114,9 +114,10 @@ void portable_free(void *p) {
#define read_csr(reg) ({ unsigned long __tmp; \
asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
__tmp; })
#define GETMYTIME(_t) (*_t=read_csr(cycle))
#define GETMYTIME(_t) (_t = *(volatile unsigned long long*)0x0200BFF8)
#define MYTIMEDIFF(fin,ini) ((fin)-(ini))
#define TIMER_RES_DIVIDER 1
// Changing TIMER_RES_DIVIDER to 1000000 sets EE_TICKS_PER_SEC to 1000 (now counting ticks per ms)
#define TIMER_RES_DIVIDER 10000
#define SAMPLE_TIME_IMPLEMENTATION 1
#endif
#define EE_TICKS_PER_SEC (NSECS_PER_SEC / TIMER_RES_DIVIDER)
@ -132,7 +133,9 @@ 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) {
GETMYTIME(&start_time_val );
GETMYTIME(start_time_val);
ee_printf("Timer started\n");
ee_printf(" MTIME: %u\n", start_time_val);
#if CALLGRIND_RUN
CALLGRIND_START_INSTRUMENTATION
#endif
@ -153,7 +156,9 @@ void stop_time(void) {
#if MICA
asm volatile("int3");/*1 */
#endif
GETMYTIME(&stop_time_val );
GETMYTIME(stop_time_val);
ee_printf("Timer stopped\n");
ee_printf(" MTIME: %u\n", stop_time_val);
}
/* Function: get_time
Return an abstract "ticks" number that signifies time on the system.
@ -166,6 +171,7 @@ void stop_time(void) {
*/
CORE_TICKS get_time(void) {
CORE_TICKS elapsed=(CORE_TICKS)(MYTIMEDIFF(stop_time_val, start_time_val));
ee_printf(" Elapsed MTIME: %u\n", elapsed);
return elapsed;
}
/* Function: time_in_secs
@ -176,13 +182,15 @@ 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);
return retval;
}
#else
#error "Please implement timing functionality in core_portme.c"
#endif /* SAMPLE_TIME_IMPLEMENTATION */
ee_u32 default_num_contexts=MULTITHREAD;
ee_u32 default_num_contexts = MULTITHREAD;
/* Function: portable_init
Target specific initialization code