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