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[sw] minor cleanups/edits

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stnolting 2025-01-07 21:28:06 +01:00
parent 5e69c73d08
commit 9bd3aebe65
2 changed files with 3 additions and 7 deletions
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4
sw/example/demo_dual_core/main.c
View file

@ -49,7 +49,7 @@ int main(void) {
// check hardware/software configuration
if (NEORV32_SYSINFO->MISC[SYSINFO_MISC_HART] == 1) { // two cores available?
if (NEORV32_SYSINFO->MISC[SYSINFO_MISC_HART] != 2) { // two cores available?
neorv32_uart0_printf("[ERROR] dual-core option not enabled!\n");
return -1;
}
@ -135,8 +135,6 @@ int main(void) {
/**********************************************************************//**
* Main function for core 1 (secondary core).
*
* @return Irrelevant (but can be inspected by the debugger).
**************************************************************************/
void main_core1(void) {

6
sw/lib/source/neorv32_smp.c
View file

@ -27,13 +27,10 @@
**************************************************************************/
int neorv32_smp_launch(int hart_id, void (*entry_point)(void), uint8_t* stack_memory, size_t stack_size_bytes) {
const uint32_t magic_number = 0xffab4321u;
int num_cores = (int)NEORV32_SYSINFO->MISC[SYSINFO_MISC_HART];
// sanity checks
if ((neorv32_cpu_csr_read(CSR_MHARTID) != 0) || // this can be executed on core 0 only
(hart_id == 0) || // we cannot launch core 0
(hart_id > (num_cores-1)) || // selected core not available
(hart_id > (neorv32_sysinfo_get_numcores()-1)) || // selected core not available
(neorv32_clint_available() == 0)) { // we need the CLINT
return -1;
}
@ -47,6 +44,7 @@ int neorv32_smp_launch(int hart_id, void (*entry_point)(void), uint8_t* stack_me
uint32_t stack_top = ((uint32_t)stack_memory + (uint32_t)(stack_size_bytes-1)) & 0xfffffff0u;
// send launch configuration
const uint32_t magic_number = 0xffab4321u;
neorv32_smp_icc_put(hart_id, magic_number); // identifies valid configuration
neorv32_smp_icc_put(hart_id, stack_top); // top of core's stack
neorv32_smp_icc_put(hart_id, (uint32_t)entry_point); // entry point