neorv32_smp.c File Reference

Symmetric multiprocessing (SMP) library source file. More...

#include <neorv32.h>

Functions
static int	__neorv32_smp_boot (uint32_t addr, uint32_t stack)
int	neorv32_smp_launch (int(*entry_point)(void), uint8_t *stack_memory, size_t stack_size_bytes)

Detailed Description

Symmetric multiprocessing (SMP) library source file.

Function Documentation

__neorv32_smp_boot()

static int __neorv32_smp_boot ( uint32_t addr, uint32_t stack )

static

Trigger SMP boot of core 1.

Warning

This function overrides MTIMECMP of hart 1.

Parameters

[in]	addr	Core's boot address.
[in]	stack	Core's stack base address.

Returns

0 if launching succeeded, -1 if core is not responding.

neorv32_smp_launch()

int neorv32_smp_launch	(	int(*	entry_point )(void),
		uint8_t *	stack_memory,
		size_t	stack_size_bytes )

Configure and start secondary CPU core (core 1).

Warning

This function can be executed on core 0 only and will override MTIMECMP of hart 1.

Parameters

[in]	entry_point	Core's main function; must be of type "int entry_point(void)".
[in]	stack_memory	Pointer to beginning of core's stack memory array.
[in]	stack_size_bytes	Core's stack size in bytes.

Returns

0 if launching succeeded, -1 if invalid hart ID or CLINT not available, -2 if core is not responding.