319 lines
7.6 KiB
C
319 lines
7.6 KiB
C
/*
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* Copyright (c) 2006-2024, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2013-07-20 Bernard first version
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*/
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#include <armv8.h>
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#include <gicv3.h>
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#include <rtthread.h>
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#include <rthw.h>
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//#include <board.h>
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#include "interrupt.h"
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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extern long list_thread(void);
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#endif
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/**
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* The software interrupt instruction (SWI) is used for entering
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* Supervisor mode, usually to request a particular supervisor
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* function.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_svc(struct rt_hw_exp_stack *regs)
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{
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rt_kprintf("software interrupt\n");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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static rt_err_t (*rt_exception_hook)(void *context) = RT_NULL;
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/**
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* This function set the hook, which is invoked on fault exception handling.
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*
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* @param exception_handle the exception handling hook function.
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*/
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void rt_hw_exception_install(rt_err_t (*exception_handle)(void *context))
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{
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rt_exception_hook = exception_handle;
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}
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/**
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* this function will show registers of CPU
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*
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* @param regs the registers point
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*/
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void rt_hw_show_register(struct rt_hw_exp_stack *regs)
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{
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rt_kprintf("Execption:\n");
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rt_kprintf("r00:0x%08x r01:0x%08x r02:0x%08x r03:0x%08x\n", regs->r0, regs->r1, regs->r2, regs->r3);
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rt_kprintf("r04:0x%08x r05:0x%08x r06:0x%08x r07:0x%08x\n", regs->r4, regs->r5, regs->r6, regs->r7);
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rt_kprintf("r08:0x%08x r09:0x%08x r10:0x%08x\n", regs->r8, regs->r9, regs->r10);
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rt_kprintf("fp :0x%08x ip :0x%08x\n", regs->fp, regs->ip);
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rt_kprintf("sp :0x%08x lr :0x%08x pc :0x%08x\n", regs->sp, regs->lr, regs->pc);
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rt_kprintf("cpsr:0x%08x\n", regs->cpsr);
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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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}
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}
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void (*rt_trap_hook)(struct rt_hw_exp_stack *regs, const char *ex, unsigned int exception_type);
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/**
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* This function will set a hook function to trap handler.
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*
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* @param hook the hook function
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*/
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void rt_hw_trap_set_hook(void (*hook)(struct rt_hw_exp_stack *regs, const char *ex, unsigned int exception_type))
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{
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rt_trap_hook = hook;
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}
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/**
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* When comes across an instruction which it cannot handle,
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* it takes the undefined instruction trap.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_undef(struct rt_hw_exp_stack *regs)
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{
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#ifdef RT_USING_FPU
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{
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uint32_t val;
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uint32_t addr;
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if (regs->cpsr & (1 << 5))
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{
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/* thumb mode */
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addr = regs->pc - 2;
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}
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else
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{
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addr = regs->pc - 4;
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}
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asm volatile ("vmrs %0, fpexc" : "=r"(val)::"memory");
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if (!(val & 0x40000000))
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{
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/* float ins */
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val = (1U << 30);
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asm volatile ("vmsr fpexc, %0"::"r"(val):"memory");
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regs->pc = addr;
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return;
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}
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}
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#endif
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if (rt_trap_hook == RT_NULL)
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{
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rt_kprintf("undefined instruction:\n");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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else
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{
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rt_trap_hook(regs, "undefined instruction", UND_EXCEPTION);
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}
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}
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/**
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* The software interrupt instruction (SWI) is used for entering
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* Supervisor mode, usually to request a particular supervisor
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* function.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_swi(struct rt_hw_exp_stack *regs)
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{
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if (rt_trap_hook == RT_NULL)
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{
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rt_kprintf("software interrupt:\n");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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else
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{
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rt_trap_hook(regs, "software instruction", SWI_EXCEPTION);
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}
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}
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/**
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* An abort indicates that the current memory access cannot be completed,
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* which occurs during an instruction prefetch.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_pabt(struct rt_hw_exp_stack *regs)
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{
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if (rt_trap_hook == RT_NULL)
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{
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rt_kprintf("prefetch abort:\n");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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else
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{
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rt_trap_hook(regs, "prefetch abort", PABT_EXCEPTION);
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}
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}
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/**
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* An abort indicates that the current memory access cannot be completed,
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* which occurs during a data access.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_dabt(struct rt_hw_exp_stack *regs)
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{
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if (rt_trap_hook == RT_NULL)
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{
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rt_kprintf("data abort:");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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else
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{
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rt_trap_hook(regs, "data abort", DABT_EXCEPTION);
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}
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}
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/**
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* Normally, system will never reach here
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_resv(struct rt_hw_exp_stack *regs)
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{
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if (rt_trap_hook == RT_NULL)
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{
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rt_kprintf("reserved trap:\n");
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rt_hw_show_register(regs);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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rt_hw_cpu_shutdown();
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}
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else
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{
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rt_trap_hook(regs, "reserved trap", RESV_EXCEPTION);
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}
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}
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void rt_hw_trap_irq(void)
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{
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void *param;
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int int_ack;
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int ir;
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volatile rt_isr_handler_t isr_func;
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extern struct rt_irq_desc isr_table[];
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int_ack = rt_hw_interrupt_get_irq();
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ir = int_ack & GIC_ACK_INTID_MASK;
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if (ir == 1023)
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{
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/* Spurious interrupt */
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return;
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}
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#ifdef SOC_SERIES_R9A07G0
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extern fsp_vector_t g_vector_table[BSP_ICU_VECTOR_MAX_ENTRIES];
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bsp_common_interrupt_handler((uint32_t)ir);
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if (ir < MAX_HANDLERS)
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{
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/* get interrupt service routine */
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isr_table[ir].handler = (rt_isr_handler_t)g_vector_table[ir];
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isr_table[ir].param = RT_NULL;
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}
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#endif
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/* get interrupt service routine */
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isr_func = isr_table[ir].handler;
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#ifdef RT_USING_INTERRUPT_INFO
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isr_table[ir].counter++;
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#endif
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if (isr_func)
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{
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/* Interrupt for myself. */
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param = isr_table[ir].param;
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/* turn to interrupt service routine */
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isr_func(ir, param);
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}
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/* end of interrupt */
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rt_hw_interrupt_ack(int_ack);
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}
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void rt_hw_trap_fiq(void)
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{
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void *param;
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int ir;
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rt_isr_handler_t isr_func;
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extern struct rt_irq_desc isr_table[];
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ir = rt_hw_interrupt_get_irq();
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#ifdef SOC_SERIES_R9A07G0
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extern fsp_vector_t g_vector_table[BSP_ICU_VECTOR_MAX_ENTRIES];
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bsp_common_interrupt_handler((uint32_t)ir);
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if (ir < MAX_HANDLERS)
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{
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/* get interrupt service routine */
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isr_table[ir].handler = (rt_isr_handler_t)g_vector_table[ir];
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isr_table[ir].param = RT_NULL;
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}
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#endif
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/* get interrupt service routine */
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isr_func = isr_table[ir].handler;
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param = isr_table[ir].param;
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/* turn to interrupt service routine */
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isr_func(ir, param);
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/* end of interrupt */
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rt_hw_interrupt_ack(ir);
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}
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