1 | /* |
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2 | * PPCn_60x Spurious Trap Handler |
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3 | * |
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4 | * This is just enough of a trap handler to let us know what |
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5 | * the likely source of the trap was. |
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6 | * |
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7 | * Based upon the SPARC ERC32 version which was developed as |
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8 | * part of the port of RTEMS to the ERC32 implementation |
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9 | * of the SPARC by On-Line Applications Research Corporation (OAR) |
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10 | * under contract to the European Space Agency (ESA). |
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11 | * |
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12 | * COPYRIGHT (c) 1995. European Space Agency. |
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13 | * |
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14 | * This terms of the RTEMS license apply to this file. |
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15 | * |
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16 | * $Id$ |
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17 | */ |
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18 | |
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19 | #include <bsp.h> |
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20 | |
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21 | #include <string.h> |
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22 | |
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23 | rtems_isr bsp_stub_handler( |
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24 | rtems_vector_number trap |
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25 | ) |
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26 | { |
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27 | } |
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28 | |
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29 | /* |
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30 | * bsp_spurious_handler |
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31 | * |
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32 | * Print a message on the debug console and then die |
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33 | */ |
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34 | rtems_isr bsp_spurious_handler( |
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35 | rtems_vector_number trap |
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36 | ) |
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37 | { |
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38 | |
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39 | DEBUG_puts( "Spurious Trap" ); |
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40 | |
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41 | switch ( trap ) { |
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42 | case PPC_IRQ_SYSTEM_RESET: |
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43 | DEBUG_puts( "System reset" ); |
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44 | break; |
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45 | case PPC_IRQ_MCHECK: |
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46 | DEBUG_puts( "Machine check" ); |
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47 | break; |
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48 | case PPC_IRQ_PROTECT: |
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49 | DEBUG_puts( "DSI" ); |
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50 | break; |
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51 | case PPC_IRQ_ISI: |
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52 | DEBUG_puts( "ISI" ); |
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53 | break; |
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54 | case PPC_IRQ_EXTERNAL: |
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55 | DEBUG_puts( "External interupt" ); |
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56 | break; |
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57 | case PPC_IRQ_ALIGNMENT: |
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58 | DEBUG_puts( "Alignment Exception" ); |
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59 | break; |
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60 | case PPC_IRQ_PROGRAM: |
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61 | DEBUG_puts( "Program" ); |
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62 | break; |
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63 | case PPC_IRQ_NOFP: |
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64 | DEBUG_puts( "Floating point unavailable" ); |
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65 | break; |
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66 | case PPC_IRQ_DECREMENTER: |
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67 | DEBUG_puts( "Decrementer" ); |
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68 | break; |
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69 | case PPC_IRQ_RESERVED_A: |
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70 | DEBUG_puts( "Reserved 0x00a00" ); |
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71 | break; |
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72 | case PPC_IRQ_RESERVED_B: |
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73 | DEBUG_puts( "Reserved 0x00b00" ); |
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74 | break; |
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75 | case PPC_IRQ_SCALL: |
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76 | DEBUG_puts( "System call" ); |
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77 | break; |
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78 | case PPC_IRQ_TRACE: |
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79 | DEBUG_puts( "Trace" ); |
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80 | break; |
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81 | case PPC_IRQ_FP_ASST: |
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82 | DEBUG_puts( "Floating point Assist" ); |
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83 | break; |
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84 | |
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85 | #if defined(ppc403) || defined(ppc405) |
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86 | case PPC_IRQ_CRIT : |
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87 | DEBUG_puts( "Critical Error "); |
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88 | break; |
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89 | case PPC_IRQ_PIT: |
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90 | DEBUG_puts( "Prog. Interval Timer " ); |
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91 | break; |
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92 | case PPC_IRQ_FIT: |
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93 | DEBUG_puts( "Fixed Interval Timer " ); |
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94 | break; |
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95 | case PPC_IRQ_WATCHDOG : |
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96 | DEBUG_puts( "Watchdog Timer " ); |
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97 | break; |
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98 | case PPC_IRQ_DEBUG : |
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99 | DEBUG_puts( "Debug " ); |
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100 | break; |
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101 | |
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102 | #elif defined(ppc601) |
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103 | #error "Please fill in names. " |
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104 | case PPC_IRQ_TRACE : |
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105 | DEBUG_puts( "0x02000" ); |
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106 | break; |
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107 | |
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108 | #elif defined(ppc603) || defined(ppc603e) |
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109 | case PPC_IRQ_TRANS_MISS: |
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110 | DEBUG_puts( "Instruction Translation Miss" ); |
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111 | break; |
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112 | case PPC_IRQ_DATA_LOAD: |
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113 | DEBUG_puts( "Data Load Translation Miss" ); |
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114 | break; |
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115 | case PPC_IRQ_DATA_STORE: |
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116 | DEBUG_puts( "Data store Translation Miss"); |
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117 | break; |
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118 | case PPC_IRQ_ADDR_BRK: |
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119 | DEBUG_puts( "Instruction address break point" ); |
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120 | break; |
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121 | case PPC_IRQ_SYS_MGT: |
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122 | DEBUG_puts( "System management interrupt" ); |
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123 | break; |
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124 | |
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125 | #elif defined(mpc604) |
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126 | #error "Please fill in names. " |
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127 | case PPC_IRQ_ADDR_BRK: |
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128 | DEBUG_puts( "0x1300" ); |
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129 | break; |
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130 | case PPC_IRQ_SYS_MGT: |
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131 | DEBUG_puts( "0x1400" ); |
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132 | break; |
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133 | #endif |
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134 | |
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135 | default: |
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136 | DEBUG_puts( "Undefined exception " ); |
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137 | break; |
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138 | } |
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139 | |
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140 | /* |
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141 | * What else can we do but stop ... |
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142 | */ |
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143 | /* |
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144 | asm volatile( "" ); |
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145 | */ |
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146 | } |
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147 | |
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148 | /* |
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149 | * bsp_spurious_initialize |
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150 | * |
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151 | * Install the spurious handler for most traps. |
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152 | */ |
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153 | |
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154 | void bsp_spurious_initialize() |
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155 | { |
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156 | uint32_t trap; |
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157 | |
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158 | for ( trap=0 ; trap < PPC_IRQ_LAST ; trap++ ) { |
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159 | |
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160 | /* |
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161 | * Skip window overflow, underflow, and flush as well as software |
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162 | * trap 0 which we will use as a shutdown. |
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163 | */ |
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164 | |
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165 | set_vector( bsp_spurious_handler, trap, 1 ); |
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166 | } |
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167 | |
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168 | set_vector( bsp_stub_handler, PPC_IRQ_DECREMENTER, 1 ); |
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169 | set_vector( bsp_stub_handler, PPC_IRQ_TRACE, 1 ); |
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170 | set_vector( bsp_stub_handler, PPC_IRQ_SYS_MGT, 1 ); |
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171 | } |
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