| Line 50... |
Line 50... |
*
|
*
|
* @return 0 if MTIME was not synthesized, 1 if MTIME is available.
|
* @return 0 if MTIME was not synthesized, 1 if MTIME is available.
|
**************************************************************************/
|
**************************************************************************/
|
int neorv32_mtime_available(void) {
|
int neorv32_mtime_available(void) {
|
|
|
if (SYSINFO_FEATURES & (1 << SYSINFO_FEATURES_IO_MTIME)) {
|
if (NEORV32_SYSINFO.SOC & (1 << SYSINFO_SOC_IO_MTIME)) {
|
return 1;
|
return 1;
|
}
|
}
|
else {
|
else {
|
return 0;
|
return 0;
|
}
|
}
|
| Line 75... |
Line 75... |
uint32_t uint32[sizeof(uint64_t)/2];
|
uint32_t uint32[sizeof(uint64_t)/2];
|
} cycles;
|
} cycles;
|
|
|
cycles.uint64 = time;
|
cycles.uint64 = time;
|
|
|
MTIME_LO = 0;
|
NEORV32_MTIME.TIME_LO = 0;
|
MTIME_HI = cycles.uint32[1];
|
NEORV32_MTIME.TIME_HI = cycles.uint32[1];
|
MTIME_LO = cycles.uint32[0];
|
NEORV32_MTIME.TIME_LO = cycles.uint32[0];
|
|
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
/**********************************************************************//**
|
| Line 98... |
Line 98... |
uint32_t uint32[sizeof(uint64_t)/2];
|
uint32_t uint32[sizeof(uint64_t)/2];
|
} cycles;
|
} cycles;
|
|
|
uint32_t tmp1, tmp2, tmp3;
|
uint32_t tmp1, tmp2, tmp3;
|
while(1) {
|
while(1) {
|
tmp1 = MTIME_HI;
|
tmp1 = NEORV32_MTIME.TIME_HI;
|
tmp2 = MTIME_LO;
|
tmp2 = NEORV32_MTIME.TIME_LO;
|
tmp3 = MTIME_HI;
|
tmp3 = NEORV32_MTIME.TIME_HI;
|
if (tmp1 == tmp3) {
|
if (tmp1 == tmp3) {
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
| Line 130... |
Line 130... |
uint32_t uint32[sizeof(uint64_t)/2];
|
uint32_t uint32[sizeof(uint64_t)/2];
|
} cycles;
|
} cycles;
|
|
|
cycles.uint64 = timecmp;
|
cycles.uint64 = timecmp;
|
|
|
MTIMECMP_LO = -1; // prevent MTIMECMP from temporarily becoming smaller than the lesser of the old and new values
|
NEORV32_MTIME.TIMECMP_LO = -1; // prevent MTIMECMP from temporarily becoming smaller than the lesser of the old and new values
|
MTIMECMP_HI = cycles.uint32[1];
|
NEORV32_MTIME.TIMECMP_HI = cycles.uint32[1];
|
MTIMECMP_LO = cycles.uint32[0];
|
NEORV32_MTIME.TIMECMP_LO = cycles.uint32[0];
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
/**********************************************************************//**
|
* Get compare time register (MTIMECMP).
|
* Get compare time register (MTIMECMP).
|
*
|
*
|
* @return Current MTIMECMP value.
|
* @return Current MTIMECMP value.
|
**************************************************************************/
|
**************************************************************************/
|
uint64_t neorv32_mtime_get_timecmp(void) {
|
uint64_t neorv32_mtime_get_timecmp(void) {
|
|
|
return MTIMECMP;
|
union {
|
|
uint64_t uint64;
|
|
uint32_t uint32[sizeof(uint64_t)/2];
|
|
} cycles;
|
|
|
|
cycles.uint32[0] = NEORV32_MTIME.TIMECMP_LO;
|
|
cycles.uint32[1] = NEORV32_MTIME.TIMECMP_HI;
|
|
|
|
return cycles.uint64;
|
}
|
}
|
|
|
No newline at end of file
|
No newline at end of file
|
