1 /* ----------------------------------------------------------------------------
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2 * SAM Software Package License
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2015, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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33 * Provides the low-level initialization function that called on chip startup.
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36 /*----------------------------------------------------------------------------
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38 *----------------------------------------------------------------------------*/
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41 #include "compiler.h"
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42 #include "peripherals/aic.h"
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43 #include "cortexa5_interrupts.h"
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46 /*----------------------------------------------------------------------------
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48 *----------------------------------------------------------------------------*/
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51 static const char* _prefetch_abort_status[32] = {
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55 "access flag fault, section",
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57 "translation fault, section",
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58 "access flag fault, page",
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59 "translation fault, page",
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60 "synchronous external abort",
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61 "domain fault, section",
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63 "domain fault, page",
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64 "L1 translation, synchronous external abort",
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65 "permission fault, section",
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66 "L2 translation, synchronous external abort",
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67 "permission fault, page",
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71 static const char* _data_abort_status[32] = {
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75 "access flag fault, section",
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76 "instruction cache maintenance fault",
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77 "translation fault, section",
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78 "access flag fault, page",
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79 "translation fault, page",
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80 "synchronous external abort, nontranslation",
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81 "domain fault, section",
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83 "domain fault, page",
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84 "1st level translation, synchronous external abort",
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85 "permission fault, section",
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86 "2nd level translation, synchronous external abort",
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87 "permission fault, page",
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94 "asynchronous external abort"
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97 /*----------------------------------------------------------------------------
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98 * Functions Prototypes
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99 *----------------------------------------------------------------------------*/
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101 void default_undefined_instruction_irq_handler(void);
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102 void default_software_interrupt_irq_handler(void);
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103 void default_data_abort_irq_handler(void);
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104 void default_prefetch_abort_irq_handler(void);
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106 #pragma weak undefined_instruction_irq_handler=default_undefined_instruction_irq_handler
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107 #pragma weak software_interrupt_irq_handler=default_software_interrupt_irq_handler
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108 #pragma weak data_abort_irq_handler=default_data_abort_irq_handler
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109 #pragma weak prefetch_abort_irq_handler=default_prefetch_abort_irq_handler
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111 /*----------------------------------------------------------------------------
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113 *----------------------------------------------------------------------------*/
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116 * \brief Default handler for "Undefined Instruction" exception
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118 void default_undefined_instruction_irq_handler(void)
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121 printf("#####################\n\r");
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122 printf("Undefined Instruction\n\r");
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123 printf("#####################\n\r");
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131 * \brief Default handler for "Software Interrupt" exception
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133 void default_software_interrupt_irq_handler(void)
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136 printf("##################\n\r");
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137 printf("Software Interrupt\n\r");
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138 printf("##################\n\r");
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145 * \brief Default handler for "Data Abort" exception
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147 void default_data_abort_irq_handler(void)
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149 uint32_t v1, v2, dfsr;
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151 asm("mrc p15, 0, %0, c5, c0, 0" : "=r"(v1));
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152 asm("mrc p15, 0, %0, c6, c0, 0" : "=r"(v2));
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155 printf("####################\n\r");
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156 dfsr = ((v1 >> 4) & 0x0F);
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157 printf("Data Fault occured in %x domain\n\r", (unsigned int)dfsr);
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158 dfsr = (((v1 & 0x400) >> 6) | (v1 & 0x0F));
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159 if (_data_abort_status[dfsr])
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160 printf("Data Fault reason is: %s\n\r", _data_abort_status[dfsr]);
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162 printf("Data Fault reason is unknown\n\r");
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163 printf("Data Fault occured at address: 0x%08x\n\n\r", (unsigned int)v2);
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164 printf("Data Fault status register value: 0x%x\n\r", (unsigned int)v1);
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165 printf("####################\n\r");
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172 * \brief Default handler for "Prefetch Abort" exception
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174 void default_prefetch_abort_irq_handler(void)
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176 uint32_t v1, v2, ifsr;
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178 asm("mrc p15, 0, %0, c5, c0, 1" : "=r"(v1));
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179 asm("mrc p15, 0, %0, c6, c0, 2" : "=r"(v2));
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182 printf("####################\n\r");
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183 ifsr = (((v1 & 0x400) >> 6) | (v1 & 0x0F));
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184 if (_prefetch_abort_status[ifsr])
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185 printf("Prefetch Fault reason is: %s\n\r", _prefetch_abort_status[ifsr]);
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187 printf("Prefetch Fault reason is unknown\n\r");
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188 printf("prefetch Fault occured at address: 0x%08x\n\n\r", (unsigned int)v2);
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189 printf("Prefetch Fault status register value: 0x%x\n\r", (unsigned int)v1);
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190 printf("####################\n\r");
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