/* * Copyright (c) 2006-2023, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2023-02-08 RT-Thread the first version */ #include "rtthread.h" static void data_abort(unsigned long far, unsigned long iss) { rt_kprintf("fault addr = 0x%016lx\n", far); if (iss & 0x40) { rt_kprintf("abort caused by write instruction\n"); } else { rt_kprintf("abort caused by read instruction\n"); } switch (iss & 0x3f) { case 0b000000: rt_kprintf("Address size fault, zeroth level of translation or translation table base register\n"); break; case 0b000001: rt_kprintf("Address size fault, first level\n"); break; case 0b000010: rt_kprintf("Address size fault, second level\n"); break; case 0b000011: rt_kprintf("Address size fault, third level\n"); break; case 0b000100: rt_kprintf("Translation fault, zeroth level\n"); break; case 0b000101: rt_kprintf("Translation fault, first level\n"); break; case 0b000110: rt_kprintf("Translation fault, second level\n"); break; case 0b000111: rt_kprintf("Translation fault, third level\n"); break; case 0b001001: rt_kprintf("Access flag fault, first level\n"); break; case 0b001010: rt_kprintf("Access flag fault, second level\n"); break; case 0b001011: rt_kprintf("Access flag fault, third level\n"); break; case 0b001101: rt_kprintf("Permission fault, first level\n"); break; case 0b001110: rt_kprintf("Permission fault, second level\n"); break; case 0b001111: rt_kprintf("Permission fault, third level\n"); break; case 0b010000: rt_kprintf("Synchronous external abort, not on translation table walk\n"); break; case 0b011000: rt_kprintf("Synchronous parity or ECC error on memory access, not on translation table walk\n"); break; case 0b010100: rt_kprintf("Synchronous external abort on translation table walk, zeroth level\n"); break; case 0b010101: rt_kprintf("Synchronous external abort on translation table walk, first level\n"); break; case 0b010110: rt_kprintf("Synchronous external abort on translation table walk, second level\n"); break; case 0b010111: rt_kprintf("Synchronous external abort on translation table walk, third level\n"); break; case 0b011100: rt_kprintf("Synchronous parity or ECC error on memory access on translation table walk, zeroth level\n"); break; case 0b011101: rt_kprintf("Synchronous parity or ECC error on memory access on translation table walk, first level\n"); break; case 0b011110: rt_kprintf("Synchronous parity or ECC error on memory access on translation table walk, second level\n"); break; case 0b011111: rt_kprintf("Synchronous parity or ECC error on memory access on translation table walk, third level\n"); break; case 0b100001: rt_kprintf("Alignment fault\n"); break; case 0b110000: rt_kprintf("TLB conflict abort\n"); break; case 0b110100: rt_kprintf("IMPLEMENTATION DEFINED fault (Lockdown fault)\n"); break; case 0b110101: rt_kprintf("IMPLEMENTATION DEFINED fault (Unsupported Exclusive access fault)\n"); break; case 0b111101: rt_kprintf("Section Domain Fault, used only for faults reported in the PAR_EL1\n"); break; case 0b111110: rt_kprintf("Page Domain Fault, used only for faults reported in the PAR_EL1\n"); break; default: rt_kprintf("unknow abort\n"); break; } } void process_exception(unsigned long esr, unsigned long epc) { rt_uint8_t ec; rt_uint32_t iss; unsigned long fault_addr; rt_kprintf("\nexception info:\n"); ec = (unsigned char)((esr >> 26) & 0x3fU); iss = (unsigned int)(esr & 0x00ffffffU); rt_kprintf("esr.EC :0x%02x\n", ec); rt_kprintf("esr.IL :0x%02x\n", (unsigned char)((esr >> 25) & 0x01U)); rt_kprintf("esr.ISS:0x%08x\n", iss); rt_kprintf("epc :0x%016p\n", (void *)epc); switch (ec) { case 0x00: rt_kprintf("Exceptions with an unknow reason\n"); break; case 0x01: rt_kprintf("Exceptions from an WFI or WFE instruction\n"); break; case 0x03: rt_kprintf("Exceptions from an MCR or MRC access to CP15 from AArch32\n"); break; case 0x04: rt_kprintf("Exceptions from an MCRR or MRRC access to CP15 from AArch32\n"); break; case 0x05: rt_kprintf("Exceptions from an MCR or MRC access to CP14 from AArch32\n"); break; case 0x06: rt_kprintf("Exceptions from an LDC or STC access to CP14 from AArch32\n"); break; case 0x07: rt_kprintf("Exceptions from Access to Advanced SIMD or floating-point registers\n"); break; case 0x08: rt_kprintf("Exceptions from an MRC (or VMRS) access to CP10 from AArch32\n"); break; case 0x0c: rt_kprintf("Exceptions from an MCRR or MRRC access to CP14 from AArch32\n"); break; case 0x0e: rt_kprintf("Exceptions that occur because ther value of PSTATE.IL is 1\n"); break; case 0x11: rt_kprintf("SVC call from AArch32 state\n"); break; case 0x15: rt_kprintf("SVC call from AArch64 state\n"); break; case 0x20: rt_kprintf("Instruction abort from lower exception level\n"); break; case 0x21: rt_kprintf("Instruction abort from current exception level\n"); break; case 0x22: rt_kprintf("PC alignment fault\n"); break; case 0x24: rt_kprintf("Data abort from a lower Exception level\n"); __asm__ volatile("mrs %0, far_el1":"=r"(fault_addr)); data_abort(fault_addr, iss); break; case 0x25: rt_kprintf("Data abort\n"); __asm__ volatile("mrs %0, far_el1":"=r"(fault_addr)); data_abort(fault_addr, iss); break; default: rt_kprintf("Other error\n"); break; } }