1 | /*===============================================================*\ |
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2 | | Project: RTEMS generic MPC5200 BSP | |
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3 | +-----------------------------------------------------------------+ |
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4 | | Partially based on the code references which are named below. | |
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5 | | Adaptions, modifications, enhancements and any recent parts of | |
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6 | | the code are: | |
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7 | | Copyright (c) 2005 | |
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8 | | Embedded Brains GmbH | |
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9 | | Obere Lagerstr. 30 | |
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10 | | D-82178 Puchheim | |
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11 | | Germany | |
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12 | | rtems@embedded-brains.de | |
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13 | +-----------------------------------------------------------------+ |
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14 | | The license and distribution terms for this file may be | |
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15 | | found in the file LICENSE in this distribution or at | |
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16 | | | |
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17 | | http://www.rtems.com/license/LICENSE. | |
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18 | | | |
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19 | +-----------------------------------------------------------------+ |
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20 | | this file contains the irq controller handler | |
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21 | \*===============================================================*/ |
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22 | /***********************************************************************/ |
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23 | /* */ |
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24 | /* Module: vectors_init.c */ |
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25 | /* Date: 07/17/2003 */ |
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26 | /* Purpose: RTEMS exception handling initialization */ |
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27 | /* */ |
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28 | /*---------------------------------------------------------------------*/ |
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29 | /* */ |
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30 | /* Description: This include file describe the data structure and */ |
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31 | /* the functions implemented by rtems to handle */ |
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32 | /* exceptions. */ |
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33 | /* */ |
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34 | /*---------------------------------------------------------------------*/ |
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35 | /* */ |
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36 | /* Code */ |
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37 | /* References: RTEMS exception handling initialization */ |
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38 | /* */ |
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39 | /* Module: vectors_init.c */ |
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40 | /* Project: RTEMS 4.6.0pre1 / MCF8260ads BSP */ |
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41 | /* Version 1.2 */ |
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42 | /* Date: 11/04/2002 */ |
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43 | /* */ |
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44 | /* Author(s) / Copyright(s): */ |
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45 | /* */ |
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46 | /* CopyRight (C) 1999 valette@crf.canon.fr */ |
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47 | /* */ |
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48 | /* The license and distribution terms for this file may be */ |
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49 | /* found in found in the file LICENSE in this distribution or at */ |
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50 | /* http://www.rtems.com/license/LICENSE. */ |
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51 | /* */ |
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52 | /*---------------------------------------------------------------------*/ |
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53 | /* */ |
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54 | /* Partially based on the code references which are named above. */ |
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55 | /* Adaptions, modifications, enhancements and any recent parts of */ |
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56 | /* the code are under the right of */ |
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57 | /* */ |
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58 | /* IPR Engineering, Dachauer StraÃe 38, D-80335 MÃŒnchen */ |
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59 | /* Copyright(C) 2003 */ |
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60 | /* */ |
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61 | /*---------------------------------------------------------------------*/ |
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62 | /* */ |
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63 | /* IPR Engineering makes no representation or warranties with */ |
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64 | /* respect to the performance of this computer program, and */ |
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65 | /* specifically disclaims any responsibility for any damages, */ |
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66 | /* special or consequential, connected with the use of this program. */ |
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67 | /* */ |
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68 | /*---------------------------------------------------------------------*/ |
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69 | /* */ |
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70 | /* Version history: 1.0 */ |
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71 | /* */ |
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72 | /***********************************************************************/ |
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73 | |
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74 | #include "../vectors/vectors.h" |
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75 | #include <libcpu/raw_exception.h> |
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76 | #include <bsp.h> |
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77 | #include <rtems/bspIo.h> |
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78 | |
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79 | extern int mpc60x_vector_is_valid(rtems_vector); |
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80 | static rtems_raw_except_global_settings exception_config; |
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81 | static rtems_raw_except_connect_data exception_table[LAST_VALID_EXC + 1]; |
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82 | |
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83 | exception_handler_t globalExceptHdl; |
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84 | |
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85 | void C_exception_handler(BSP_Exception_frame* excPtr) |
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86 | { |
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87 | int recoverable = 0; |
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88 | |
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89 | printk("exception handler called for exception %d\n", excPtr->_EXC_number); |
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90 | printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0); |
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91 | printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1); |
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92 | printk("\t R0 = %x\n", excPtr->GPR0); |
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93 | printk("\t R1 = %x\n", excPtr->GPR1); |
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94 | printk("\t R2 = %x\n", excPtr->GPR2); |
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95 | printk("\t R3 = %x\n", excPtr->GPR3); |
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96 | printk("\t R4 = %x\n", excPtr->GPR4); |
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97 | printk("\t R5 = %x\n", excPtr->GPR5); |
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98 | printk("\t R6 = %x\n", excPtr->GPR6); |
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99 | printk("\t R7 = %x\n", excPtr->GPR7); |
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100 | printk("\t R8 = %x\n", excPtr->GPR8); |
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101 | printk("\t R9 = %x\n", excPtr->GPR9); |
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102 | printk("\t R10 = %x\n", excPtr->GPR10); |
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103 | printk("\t R11 = %x\n", excPtr->GPR11); |
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104 | printk("\t R12 = %x\n", excPtr->GPR12); |
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105 | printk("\t R13 = %x\n", excPtr->GPR13); |
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106 | printk("\t R14 = %x\n", excPtr->GPR14); |
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107 | printk("\t R15 = %x\n", excPtr->GPR15); |
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108 | printk("\t R16 = %x\n", excPtr->GPR16); |
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109 | printk("\t R17 = %x\n", excPtr->GPR17); |
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110 | printk("\t R18 = %x\n", excPtr->GPR18); |
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111 | printk("\t R19 = %x\n", excPtr->GPR19); |
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112 | printk("\t R20 = %x\n", excPtr->GPR20); |
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113 | printk("\t R21 = %x\n", excPtr->GPR21); |
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114 | printk("\t R22 = %x\n", excPtr->GPR22); |
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115 | printk("\t R23 = %x\n", excPtr->GPR23); |
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116 | printk("\t R24 = %x\n", excPtr->GPR24); |
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117 | printk("\t R25 = %x\n", excPtr->GPR25); |
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118 | printk("\t R26 = %x\n", excPtr->GPR26); |
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119 | printk("\t R27 = %x\n", excPtr->GPR27); |
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120 | printk("\t R28 = %x\n", excPtr->GPR28); |
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121 | printk("\t R29 = %x\n", excPtr->GPR29); |
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122 | printk("\t R30 = %x\n", excPtr->GPR30); |
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123 | printk("\t R31 = %x\n", excPtr->GPR31); |
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124 | printk("\t CR = %x\n", excPtr->EXC_CR); |
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125 | printk("\t CTR = %x\n", excPtr->EXC_CTR); |
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126 | printk("\t XER = %x\n", excPtr->EXC_XER); |
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127 | printk("\t LR = %x\n", excPtr->EXC_LR); |
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128 | printk("\t MSR = %x\n", excPtr->EXC_MSR); |
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129 | |
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130 | if(excPtr->_EXC_number == ASM_DEC_VECTOR) |
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131 | recoverable = 1; |
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132 | |
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133 | if(excPtr->_EXC_number == ASM_SYS_VECTOR) |
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134 | recoverable = 1; |
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135 | |
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136 | #if 0 |
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137 | #ifdef TEST_RAW_EXCEPTION_CODE |
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138 | recoverable = 1; |
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139 | #else |
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140 | recoverable = 0; |
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141 | #endif |
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142 | if (!recoverable) { |
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143 | printk("unrecoverable exception!!! Push reset button\n"); |
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144 | while(1); |
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145 | |
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146 | } |
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147 | #endif |
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148 | |
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149 | |
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150 | } |
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151 | |
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152 | void nop_except_enable(const rtems_raw_except_connect_data* ptr) |
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153 | { |
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154 | } |
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155 | int except_always_enabled(const rtems_raw_except_connect_data* ptr) |
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156 | { |
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157 | return 1; |
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158 | } |
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159 | |
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160 | void initialize_exceptions() |
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161 | { |
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162 | int i; |
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163 | |
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164 | /* |
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165 | * Initialize pointer used by low level execption handling |
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166 | */ |
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167 | globalExceptHdl = C_exception_handler; |
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168 | /* |
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169 | * Put default_exception_vector_code_prolog at relevant exception |
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170 | * code entry addresses |
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171 | */ |
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172 | exception_config.exceptSize = LAST_VALID_EXC + 1; |
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173 | exception_config.rawExceptHdlTbl = &exception_table[0]; |
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174 | exception_config.defaultRawEntry.exceptIndex = 0; |
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175 | exception_config.defaultRawEntry.hdl.vector = 0; |
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176 | exception_config.defaultRawEntry.hdl.raw_hdl = default_exception_vector_code_prolog; |
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177 | /* |
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178 | * Note that next line the '&' before default_exception_vector_code_prolog_size |
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179 | * is not a bug as it is defined a .set directly in asm... |
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180 | */ |
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181 | exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size; |
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182 | |
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183 | |
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184 | for (i=0; i <= exception_config.exceptSize; i++) |
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185 | { |
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186 | |
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187 | printk("installing exception number %d\n", i); |
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188 | |
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189 | if (!mpc60x_vector_is_valid(i)) |
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190 | continue; |
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191 | |
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192 | exception_table[i].exceptIndex = i; |
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193 | exception_table[i].hdl = exception_config.defaultRawEntry.hdl; |
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194 | exception_table[i].hdl.vector = i; |
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195 | exception_table[i].on = nop_except_enable; |
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196 | exception_table[i].off = nop_except_enable; |
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197 | exception_table[i].isOn = except_always_enabled; |
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198 | } |
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199 | |
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200 | if (!mpc60x_init_exceptions(&exception_config)) |
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201 | BSP_panic("Exception handling initialization failed\n"); |
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202 | else |
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203 | printk("Exception handling initialization done\n"); |
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204 | |
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205 | } |
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