118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Private kernel definitions
|
|
*
|
|
* This file contains private kernel function/macro definitions and various
|
|
* other definitions for the RISCV processor architecture.
|
|
*/
|
|
|
|
#ifndef ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_
|
|
#define ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_
|
|
|
|
#include <kernel_arch_data.h>
|
|
#include <pmp.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef _ASMLANGUAGE
|
|
|
|
static ALWAYS_INLINE void arch_kernel_init(void)
|
|
{
|
|
#ifdef CONFIG_THREAD_LOCAL_STORAGE
|
|
__asm__ volatile ("li tp, 0");
|
|
#endif
|
|
#if defined(CONFIG_SMP) || defined(CONFIG_USERSPACE)
|
|
csr_write(mscratch, &_kernel.cpus[0]);
|
|
#endif
|
|
#ifdef CONFIG_SMP
|
|
_kernel.cpus[0].arch.hartid = csr_read(mhartid);
|
|
_kernel.cpus[0].arch.online = true;
|
|
#endif
|
|
#if ((CONFIG_MP_MAX_NUM_CPUS) > 1)
|
|
unsigned int cpu_node_list[] = {
|
|
DT_FOREACH_CHILD_STATUS_OKAY_SEP(DT_PATH(cpus), DT_REG_ADDR, (,))
|
|
};
|
|
unsigned int cpu_num, hart_x;
|
|
|
|
for (cpu_num = 1, hart_x = 0; cpu_num < arch_num_cpus(); cpu_num++) {
|
|
if (cpu_node_list[hart_x] == _kernel.cpus[0].arch.hartid) {
|
|
hart_x++;
|
|
}
|
|
_kernel.cpus[cpu_num].arch.hartid = cpu_node_list[hart_x];
|
|
hart_x++;
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_RISCV_PMP
|
|
z_riscv_pmp_init();
|
|
#endif
|
|
}
|
|
|
|
static ALWAYS_INLINE void
|
|
arch_switch(void *switch_to, void **switched_from)
|
|
{
|
|
extern void z_riscv_switch(struct k_thread *new, struct k_thread *old);
|
|
struct k_thread *new = switch_to;
|
|
struct k_thread *old = CONTAINER_OF(switched_from, struct k_thread,
|
|
switch_handle);
|
|
#ifdef CONFIG_RISCV_ALWAYS_SWITCH_THROUGH_ECALL
|
|
arch_syscall_invoke2((uintptr_t)new, (uintptr_t)old, RV_ECALL_SCHEDULE);
|
|
#else
|
|
z_riscv_switch(new, old);
|
|
#endif
|
|
}
|
|
|
|
FUNC_NORETURN void z_riscv_fatal_error(unsigned int reason,
|
|
const z_arch_esf_t *esf);
|
|
|
|
static inline bool arch_is_in_isr(void)
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
unsigned int key = arch_irq_lock();
|
|
bool ret = arch_curr_cpu()->nested != 0U;
|
|
|
|
arch_irq_unlock(key);
|
|
return ret;
|
|
#else
|
|
return _kernel.cpus[0].nested != 0U;
|
|
#endif
|
|
}
|
|
|
|
extern FUNC_NORETURN void z_riscv_userspace_enter(k_thread_entry_t user_entry,
|
|
void *p1, void *p2, void *p3,
|
|
uint32_t stack_end,
|
|
uint32_t stack_start);
|
|
|
|
#ifdef CONFIG_IRQ_OFFLOAD
|
|
int z_irq_do_offload(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_FPU_SHARING
|
|
void z_riscv_flush_local_fpu(void);
|
|
void z_riscv_flush_fpu_ipi(unsigned int cpu);
|
|
#endif
|
|
|
|
#ifndef CONFIG_MULTITHREADING
|
|
extern FUNC_NORETURN void z_riscv_switch_to_main_no_multithreading(
|
|
k_thread_entry_t main_func, void *p1, void *p2, void *p3);
|
|
|
|
#define ARCH_SWITCH_TO_MAIN_NO_MULTITHREADING \
|
|
z_riscv_switch_to_main_no_multithreading
|
|
|
|
#endif /* !CONFIG_MULTITHREADING */
|
|
|
|
#endif /* _ASMLANGUAGE */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_ */
|