Mercurial > flash_v2

annotate packages/hal/common/current/tests/cache.c @ 50:a0774359f013 ecos-sw-1999-11-02

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Merge from eCos master repository on 1999-11-02-17:02:15-GMT
author jlarmour
date Tue, 02 Nov 1999 20:57:07 +0000
parents 5f5102441818
children c38311975d4f
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1 /*=================================================================
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2 //
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3 // cache.c
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4 //
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5 // HAL Cache timing test
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Cygnus eCos Public License
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12 // Version 1.0 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://sourceware.cygnus.com/ecos
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released
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22 // September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Cygnus. Portions created
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25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
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26 // -------------------------------------------
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27 //
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28 //####COPYRIGHTEND####
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29 //==========================================================================
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30 //#####DESCRIPTIONBEGIN####
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31 //
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32 // Author(s): dsm
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33 // Contributors: dsm, nickg
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34 // Date: 1998-06-18
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35 //####DESCRIPTIONEND####
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36 */
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37
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38 #include <pkgconf/hal.h>
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39
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40 #include <cyg/infra/testcase.h>
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41
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42 #include <cyg/hal/hal_cache.h>
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43 #include <cyg/hal/hal_intr.h>
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44 #include <cyg/infra/diag.h>
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45
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46 #if (HAL_DCACHE_SIZE > 0)
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47
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48 // -------------------------------------------------------------------------
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49 // If the HAL does not supply this, we supply our own version
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50
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51 #ifdef HAL_DCACHE_SYNC
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52
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53 # define HAL_DCACHE_PURGE_ALL() HAL_DCACHE_SYNC()
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54
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55 #else
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56
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57 static cyg_uint8 dca[HAL_DCACHE_SIZE + HAL_DCACHE_LINE_SIZE*2];
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58
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59 #define HAL_DCACHE_PURGE_ALL() \
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60 CYG_MACRO_START \
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61 volatile cyg_uint8 *addr = &dca[HAL_DCACHE_LINE_SIZE]; \
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62 volatile cyg_uint8 tmp = 0; \
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63 int i; \
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64 for( i = 0; i < HAL_DCACHE_SIZE; i += HAL_DCACHE_LINE_SIZE ) \
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65 { \
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66 tmp = addr[i]; \
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67 } \
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68 CYG_MACRO_END
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69
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70 #endif
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71
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72 // -------------------------------------------------------------------------
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73
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74 #ifndef MAX_STRIDE
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75 #define MAX_STRIDE 64
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76 #endif
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77
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78 volatile char m[(HAL_DCACHE_SIZE/HAL_DCACHE_LINE_SIZE)*MAX_STRIDE];
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79
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80 // -------------------------------------------------------------------------
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81
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82 static void time0(register cyg_uint32 stride)
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83 {
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84 register cyg_uint32 j,k;
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85 register char c;
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86
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87 diag_printf("stride=%d\n", stride);
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88
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89 k = 0;
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90 if ( cyg_test_is_simulator )
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91 k = 3960;
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92
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93 for(; k<4000;k++) {
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94 for(j=0; j<(HAL_DCACHE_SIZE/HAL_DCACHE_LINE_SIZE); j++) {
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95 c=m[stride*j];
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96 }
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97 }
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98 }
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99
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100 // -------------------------------------------------------------------------
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101
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102 void time1(void)
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103 {
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104 cyg_uint32 i;
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105
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106 for(i=1; i<=MAX_STRIDE; i+=i) {
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107 time0(i);
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108 }
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109 }
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110
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111 // -------------------------------------------------------------------------
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112 // This test could be improved by counting number of passes possible
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113 // in a given number of ticks.
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114
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115 static void entry0( void )
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116 {
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117 register CYG_INTERRUPT_STATE oldints;
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118
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119 #ifdef HAL_CACHE_UNIFIED
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120
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121 HAL_DISABLE_INTERRUPTS(oldints);
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122 HAL_DCACHE_PURGE_ALL(); // rely on above definition
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123 HAL_UCACHE_INVALIDATE_ALL();
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124 HAL_UCACHE_DISABLE();
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125 HAL_RESTORE_INTERRUPTS(oldints);
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126 CYG_TEST_INFO("Cache off");
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127 time1();
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128
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129 HAL_DISABLE_INTERRUPTS(oldints);
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130 HAL_DCACHE_PURGE_ALL(); // rely on above definition
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131 HAL_UCACHE_INVALIDATE_ALL();
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132 HAL_UCACHE_ENABLE();
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133 HAL_RESTORE_INTERRUPTS(oldints);
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134 CYG_TEST_INFO("Cache on");
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135 time1();
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136
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137 #else // HAL_CACHE_UNIFIED
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138
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139 HAL_DISABLE_INTERRUPTS(oldints);
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140 HAL_DCACHE_PURGE_ALL();
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141 HAL_ICACHE_INVALIDATE_ALL();
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142 HAL_DCACHE_INVALIDATE_ALL();
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143 HAL_ICACHE_DISABLE();
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144 HAL_DCACHE_DISABLE();
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145 HAL_RESTORE_INTERRUPTS(oldints);
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146 CYG_TEST_INFO("Dcache off Icache off");
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147 time1();
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148
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149 HAL_DISABLE_INTERRUPTS(oldints);
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150 HAL_DCACHE_PURGE_ALL();
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151 HAL_ICACHE_INVALIDATE_ALL();
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152 HAL_DCACHE_INVALIDATE_ALL();
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153 HAL_ICACHE_DISABLE();
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154 HAL_DCACHE_ENABLE();
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155 HAL_RESTORE_INTERRUPTS(oldints);
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156 CYG_TEST_INFO("Dcache on Icache off");
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157 time1();
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158
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159 HAL_DISABLE_INTERRUPTS(oldints);
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160 HAL_DCACHE_PURGE_ALL();
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161 HAL_ICACHE_INVALIDATE_ALL();
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162 HAL_DCACHE_INVALIDATE_ALL();
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163 HAL_ICACHE_ENABLE();
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164 HAL_DCACHE_DISABLE();
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165 HAL_RESTORE_INTERRUPTS(oldints);
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166 CYG_TEST_INFO("Dcache off Icache on");
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167 time1();
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168
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169 HAL_DISABLE_INTERRUPTS(oldints);
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170 HAL_DCACHE_PURGE_ALL();
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171 HAL_ICACHE_INVALIDATE_ALL();
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172 HAL_DCACHE_INVALIDATE_ALL();
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173 HAL_ICACHE_ENABLE();
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174 HAL_DCACHE_ENABLE();
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175 HAL_RESTORE_INTERRUPTS(oldints);
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176 CYG_TEST_INFO("Dcache on Icache on");
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177 time1();
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178
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179 HAL_DISABLE_INTERRUPTS(oldints);
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180 HAL_DCACHE_PURGE_ALL();
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181 HAL_ICACHE_INVALIDATE_ALL();
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182 HAL_DCACHE_INVALIDATE_ALL();
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183 HAL_ICACHE_DISABLE();
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184 HAL_DCACHE_DISABLE();
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185 HAL_RESTORE_INTERRUPTS(oldints);
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186 CYG_TEST_INFO("Dcache off Icache off");
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187 time1();
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188
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189 #endif // HAL_CACHE_UNIFIED
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190
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191 CYG_TEST_PASS_FINISH("End of test");
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192 }
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193
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194 // -------------------------------------------------------------------------
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195
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196 void cache_main( void )
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197 {
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198 CYG_TEST_INIT();
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199
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200 entry0();
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201
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202 }
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203
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204 // -------------------------------------------------------------------------
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205
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206 externC void
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207 cyg_start( void )
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208 {
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209 cache_main();
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210 }
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211
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212 #else // (HAL_DCACHE_SIZE > 0)
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213 #define N_A_MSG "No cache"
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214 #endif // (HAL_DCACHE_SIZE > 0)
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215
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216 #ifdef N_A_MSG
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217 externC void
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218 cyg_start( void )
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219 {
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220 CYG_TEST_INIT();
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221 CYG_TEST_NA( N_A_MSG );
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222 }
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223 #endif // N_A_MSG
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224
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225 // -------------------------------------------------------------------------
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226 /* EOF cache.c */