| Line 330... |
Line 330... |
* @return Returns number of available PMP regions.
|
* @return Returns number of available PMP regions.
|
**************************************************************************/
|
**************************************************************************/
|
uint32_t neorv32_cpu_pmp_get_num_regions(void) {
|
uint32_t neorv32_cpu_pmp_get_num_regions(void) {
|
|
|
// PMP implemented at all?
|
// PMP implemented at all?
|
if ((neorv32_cpu_csr_read(CSR_MZEXT) & (1<<CSR_MZEXT_PMP)) == 0) {
|
if ((SYSINFO_CPU & (1<<SYSINFO_CPU_PMP)) == 0) {
|
return 0;
|
return 0;
|
}
|
}
|
|
|
uint32_t i = 0;
|
uint32_t i = 0;
|
|
|
| Line 595... |
Line 595... |
* @return Returns number of available HPM counters (0..29).
|
* @return Returns number of available HPM counters (0..29).
|
**************************************************************************/
|
**************************************************************************/
|
uint32_t neorv32_cpu_hpm_get_counters(void) {
|
uint32_t neorv32_cpu_hpm_get_counters(void) {
|
|
|
// HPMs implemented at all?
|
// HPMs implemented at all?
|
if ((neorv32_cpu_csr_read(CSR_MZEXT) & (1<<CSR_MZEXT_HPM)) == 0) {
|
if ((SYSINFO_CPU & (1<<SYSINFO_CPU_HPM)) == 0) {
|
return 0;
|
return 0;
|
}
|
}
|
|
|
// inhibit all HPM counters
|
// inhibit all HPM counters
|
uint32_t tmp = neorv32_cpu_csr_read(CSR_MCOUNTINHIBIT);
|
uint32_t tmp = neorv32_cpu_csr_read(CSR_MCOUNTINHIBIT);
|
| Line 678... |
Line 678... |
* @return Size of HPM counter bits (1-64, 0 if not implemented at all).
|
* @return Size of HPM counter bits (1-64, 0 if not implemented at all).
|
**************************************************************************/
|
**************************************************************************/
|
uint32_t neorv32_cpu_hpm_get_size(void) {
|
uint32_t neorv32_cpu_hpm_get_size(void) {
|
|
|
// HPMs implemented at all?
|
// HPMs implemented at all?
|
if ((neorv32_cpu_csr_read(CSR_MZEXT) & (1<<CSR_MZEXT_HPM)) == 0) {
|
if ((SYSINFO_CPU & (1<<SYSINFO_CPU_HPM)) == 0) {
|
return 0;
|
return 0;
|
}
|
}
|
|
|
// inhibt auto-update
|
// inhibt auto-update
|
asm volatile ("csrwi %[addr], %[imm]" : : [addr] "i" (CSR_MCOUNTINHIBIT), [imm] "i" (1<<CSR_MCOUNTINHIBIT_HPM3));
|
asm volatile ("csrwi %[addr], %[imm]" : : [addr] "i" (CSR_MCOUNTINHIBIT), [imm] "i" (1<<CSR_MCOUNTINHIBIT_HPM3));
|
| Line 709... |
Line 709... |
|
|
return size;
|
return size;
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
|
* Check if certain Z* extension is available
|
|
*
|
|
* @param[in] flag_id Index of the Z-extension to check from #NEORV32_CSR_MZEXT_enum
|
|
* @return 0 if extension is NOT available, != 0 if extension is available.
|
|
**************************************************************************/
|
|
int neorv32_cpu_check_zext(uint8_t flag_id) {
|
|
|
|
// check if out of range
|
|
if (flag_id > 31) {
|
|
return 0;
|
|
}
|
|
|
|
uint32_t mask = (uint32_t)(1 << flag_id);
|
|
if ((neorv32_cpu_csr_read(CSR_MZEXT) & mask) == 0) {
|
|
return 0;
|
|
}
|
|
else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
|
|
No newline at end of file
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No newline at end of file
|
