1 | /* |
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2 | * cpuIdent.c -- Cpu identification code |
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3 | * |
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4 | * Copyright (C) 1999 Eric Valette. valette@crf.canon.fr |
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5 | * |
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6 | * Added MPC8260 Andy Dachs <a.dachs@sstl.co.uk> |
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7 | * Surrey Satellite Technology Limited |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in found in the file LICENSE in this distribution or at |
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11 | * http://www.rtems.com/license/LICENSE. |
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12 | * |
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13 | * $Id$ |
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14 | * |
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15 | */ |
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16 | |
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17 | #include <libcpu/cpuIdent.h> |
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18 | #include <libcpu/spr.h> |
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19 | #include <rtems/bspIo.h> |
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20 | |
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21 | /* |
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22 | * Generate inline code to read Processor Version Register |
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23 | */ |
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24 | SPR_RO(PVR) |
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25 | |
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26 | ppc_cpu_id_t current_ppc_cpu = PPC_UNKNOWN; |
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27 | ppc_cpu_revision_t current_ppc_revision = 0xff; |
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28 | ppc_feature_t current_ppc_features = {0}; |
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29 | |
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30 | char *get_ppc_cpu_type_name(ppc_cpu_id_t cpu) |
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31 | { |
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32 | switch (cpu) { |
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33 | case PPC_405: return "PPC405"; |
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34 | case PPC_405GP: return "PPC405GP"; |
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35 | case PPC_405EX: return "PPC405EX"; |
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36 | case PPC_601: return "MPC601"; |
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37 | case PPC_5XX: return "MPC5XX"; |
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38 | case PPC_603: return "MPC603"; |
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39 | case PPC_603ev: return "MPC603ev"; |
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40 | case PPC_604: return "MPC604"; |
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41 | case PPC_750: return "MPC750"; |
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42 | case PPC_7400: return "MPC7400"; |
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43 | case PPC_7455: return "MPC7455"; |
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44 | case PPC_7457: return "MPC7457"; |
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45 | case PPC_603le: return "MPC603le"; |
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46 | case PPC_604e: return "MPC604e"; |
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47 | case PPC_604r: return "MPC604r"; |
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48 | case PPC_620: return "MPC620"; |
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49 | case PPC_860: return "MPC860"; |
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50 | case PPC_8260: return "MPC8260"; |
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51 | case PPC_8245: return "MPC8245"; |
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52 | case PPC_8540: return "MPC8540"; |
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53 | case PPC_PSIM: return "PSIM"; |
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54 | case PPC_e200z6: return "e200z6"; |
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55 | default: |
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56 | printk("Unknown CPU value of 0x%x. Please add it to " |
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57 | "<libcpu/powerpc/shared/include/cpuIdent.c>\n", cpu ); |
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58 | } |
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59 | return "UNKNOWN"; |
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60 | } |
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61 | |
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62 | ppc_cpu_id_t get_ppc_cpu_type() |
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63 | { |
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64 | unsigned int pvr; |
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65 | |
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66 | if ( PPC_UNKNOWN != current_ppc_cpu ) |
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67 | return current_ppc_cpu; |
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68 | |
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69 | pvr = (_read_PVR() >> 16); |
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70 | current_ppc_cpu = (ppc_cpu_id_t) pvr; |
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71 | |
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72 | switch (pvr) { |
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73 | case PPC_405: |
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74 | case PPC_405GP: |
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75 | case PPC_405EX: |
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76 | case PPC_601: |
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77 | case PPC_5XX: |
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78 | case PPC_603: |
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79 | case PPC_603ev: |
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80 | case PPC_603le: |
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81 | case PPC_604: |
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82 | case PPC_604r: |
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83 | case PPC_750: |
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84 | case PPC_7400: |
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85 | case PPC_7455: |
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86 | case PPC_7457: |
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87 | case PPC_604e: |
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88 | case PPC_620: |
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89 | case PPC_860: |
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90 | case PPC_8260: |
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91 | case PPC_8245: |
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92 | case PPC_PSIM: |
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93 | case PPC_8540: |
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94 | case PPC_e200z6: |
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95 | case PPC_e300c1: |
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96 | case PPC_e300c2: |
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97 | case PPC_e300c3: |
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98 | break; |
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99 | default: |
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100 | printk("Unknown PVR value of 0x%x. Please add it to " |
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101 | "<libcpu/powerpc/shared/include/cpuIdent.c>\n", pvr ); |
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102 | return PPC_UNKNOWN; |
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103 | } |
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104 | |
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105 | /* determine features */ |
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106 | |
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107 | /* FIXME: This is incomplete; I couldn't go through all the |
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108 | * manuals (yet). |
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109 | */ |
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110 | switch ( current_ppc_cpu ) { |
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111 | case PPC_7455: |
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112 | case PPC_7457: |
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113 | current_ppc_features.has_8_bats = 1; |
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114 | case PPC_7400: |
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115 | current_ppc_features.has_altivec = 1; |
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116 | case PPC_604: |
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117 | case PPC_604e: |
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118 | case PPC_604r: |
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119 | case PPC_750: |
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120 | current_ppc_features.has_hw_ptbl_lkup = 1; |
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121 | case PPC_8260: |
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122 | case PPC_8245: |
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123 | case PPC_601: |
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124 | case PPC_603: |
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125 | case PPC_603e: |
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126 | case PPC_603ev: |
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127 | case PPC_603le: |
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128 | current_ppc_features.is_60x = 1; |
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129 | default: |
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130 | break; |
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131 | } |
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132 | |
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133 | switch ( current_ppc_cpu ) { |
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134 | case PPC_405: |
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135 | case PPC_405GP: |
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136 | case PPC_405EX: |
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137 | current_ppc_features.is_bookE = PPC_BOOKE_405; |
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138 | break; |
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139 | case PPC_8540: |
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140 | case PPC_e200z6: |
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141 | current_ppc_features.is_bookE = PPC_BOOKE_E500; |
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142 | default: |
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143 | break; |
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144 | } |
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145 | |
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146 | switch ( current_ppc_cpu ) { |
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147 | case PPC_860: |
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148 | current_ppc_features.has_16byte_clne = 1; |
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149 | default: |
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150 | break; |
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151 | } |
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152 | |
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153 | switch ( current_ppc_cpu ) { |
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154 | case PPC_603e: |
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155 | case PPC_603ev: |
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156 | case PPC_603le: |
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157 | case PPC_e300c1: |
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158 | case PPC_e300c2: |
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159 | case PPC_e300c3: |
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160 | case PPC_8240: |
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161 | current_ppc_features.has_shadowed_gprs = 1; |
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162 | default: |
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163 | break; |
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164 | } |
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165 | |
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166 | switch (current_ppc_cpu) { |
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167 | case PPC_e200z6: |
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168 | current_ppc_features.has_ivpr_and_ivor = 1; |
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169 | break; |
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170 | default: |
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171 | break; |
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172 | } |
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173 | |
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174 | return current_ppc_cpu; |
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175 | } |
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176 | |
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177 | ppc_cpu_revision_t get_ppc_cpu_revision() |
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178 | { |
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179 | ppc_cpu_revision_t rev = (ppc_cpu_revision_t) (_read_PVR() & 0xffff); |
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180 | current_ppc_revision = rev; |
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181 | return rev; |
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182 | } |
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