94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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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 Fatal fault handling
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*
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* This module implements the routines necessary for handling fatal faults on
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* ARCv2 CPUs.
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*/
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#include <kernel_structs.h>
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#include <offsets_short.h>
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#include <toolchain.h>
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#include <arch/cpu.h>
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#include <misc/printk.h>
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/**
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*
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* @brief Kernel fatal error handler
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*
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* This routine is called when fatal error conditions are detected by software
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* and is responsible only for reporting the error. Once reported, it then
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* invokes the user provided routine _SysFatalErrorHandler() which is
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* responsible for implementing the error handling policy.
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*
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* The caller is expected to always provide a usable ESF. In the event that the
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* fatal error does not have a hardware generated ESF, the caller should either
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* create its own or use a pointer to the global default ESF <_default_esf>.
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*
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* @return This function does not return.
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*/
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void _NanoFatalErrorHandler(unsigned int reason, const NANO_ESF *pEsf)
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{
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switch (reason) {
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case _NANO_ERR_HW_EXCEPTION:
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break;
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#if defined(CONFIG_STACK_CANARIES) || defined(CONFIG_ARC_STACK_CHECKING) \
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|| defined(CONFIG_STACK_SENTINEL)
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case _NANO_ERR_STACK_CHK_FAIL:
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printk("***** Stack Check Fail! *****\n");
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break;
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#endif
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case _NANO_ERR_ALLOCATION_FAIL:
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printk("**** Kernel Allocation Failure! ****\n");
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break;
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case _NANO_ERR_KERNEL_OOPS:
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printk("***** Kernel OOPS! *****\n");
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break;
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case _NANO_ERR_KERNEL_PANIC:
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printk("***** Kernel Panic! *****\n");
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break;
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default:
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printk("**** Unknown Fatal Error %d! ****\n", reason);
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break;
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}
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printk("Current thread ID = %p\n", k_current_get());
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if (reason == _NANO_ERR_HW_EXCEPTION) {
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printk("Faulting instruction address = 0x%lx\n",
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_arc_v2_aux_reg_read(_ARC_V2_ERET));
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}
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/*
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* Now that the error has been reported, call the user implemented
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* policy
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* to respond to the error. The decisions as to what responses are
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* appropriate to the various errors are something the customer must
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* decide.
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*/
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_SysFatalErrorHandler(reason, pEsf);
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}
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void _do_kernel_oops(const NANO_ESF *esf)
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{
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_NanoFatalErrorHandler(esf->r0, esf);
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}
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FUNC_NORETURN void _arch_syscall_oops(void *ssf_ptr)
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{
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_SysFatalErrorHandler(_NANO_ERR_KERNEL_OOPS, ssf_ptr);
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CODE_UNREACHABLE;
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}
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