1 | /*
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2 | * TOPPERS Software
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3 | * Toyohashi Open Platform for Embedded Real-Time Systems
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4 | *
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5 | * Copyright (C) 2006-2016 by Embedded and Real-Time Systems Laboratory
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6 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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7 | * Copyright (C) 2018 by Naoki Saito
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8 | * Nagoya Municipal Industrial Research Institute, JAPAN
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9 | *
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10 | * ä¸è¨èä½æ¨©è
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11 | ã¯ï¼ä»¥ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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12 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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13 | * å¤ã»åé
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14 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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19 | * ç¨ã§ããå½¢ã§åé
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20 | å¸ããå ´åã«ã¯ï¼åé
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21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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22 | * è
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23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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26 | * ç¨ã§ããªãå½¢ã§åé
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27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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28 | * ã¨ï¼
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29 | * (a) åé
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30 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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31 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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32 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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33 | * (b) åé
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34 | å¸ã®å½¢æ
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35 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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36 | * å ±åãããã¨ï¼
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37 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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38 | * 害ãããï¼ä¸è¨èä½æ¨©è
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39 | ããã³TOPPERSããã¸ã§ã¯ããå
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40 | 責ãããã¨ï¼
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41 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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42 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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43 | ããã³TOPPERSããã¸ã§ã¯ãã
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44 | * å
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45 | 責ãããã¨ï¼
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46 | *
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47 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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48 | ã
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49 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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50 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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51 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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52 | * ã®è²¬ä»»ãè² ããªãï¼
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53 | *
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54 | * $Id: gic_kernel_impl.c 714 2016-03-31 05:52:19Z ertl-hiro $
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55 | */
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56 | /*
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57 | * GICä¾åå¦çï¼ARM64ç¨ï¼
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58 | */
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59 | #include "kernel_impl.h"
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60 |
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61 | /*
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62 | * CPUã¤ã³ã¿ãã§ã¼ã¹ã®æä½
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63 | */
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64 |
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65 | /*
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66 | * CPUã¤ã³ã¿ãã§ã¼ã¹ã®åæå
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67 | */
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68 | void
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69 | gicc_initialize(void)
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70 | {
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71 | /*
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72 | * CPUã¤ã³ã¿ãã§ã¼ã¹ããããã»ããµã¸ã®å²è¾¼ã¿ä¿¡å·éåºãç¡å¹ã«ãã
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73 | */
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74 | sil_wrw_mem(GICC_CTLR, GICC_CTLR_DISABLE);
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75 |
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76 | /*
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77 | * å²è¾¼ã¿åªå
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78 | 度ãã¹ã¯ãæä½åªå
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79 | 度ã«è¨å®
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80 | */
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81 | gicc_set_priority((GIC_PRI_LEVEL - 1) << GIC_PRI_SHIFT);
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82 |
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83 | /*
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84 | * å²è¾¼ã¿åªå
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85 | 度ã®å
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86 | ¨ãããæå¹ã«
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87 | */
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88 | sil_wrw_mem(GICC_BPR, 0U);
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89 |
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90 | /*
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91 | * ã¢ã¯ãã£ããªå²è¾¼ã¿ãããã°ï¼EOIã«ããã¯ãªã¢ãã
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92 | */
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93 | sil_wrw_mem(GICC_EOIR, sil_rew_mem(GICC_IAR));
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94 |
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95 | /*
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96 | * CPUã¤ã³ã¿ãã§ã¼ã¹ãã¤ãã¼ãã«
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97 | */
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98 | sil_wrw_mem(GICC_CTLR, GICC_CTLR_ENABLE);
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99 | }
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100 |
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101 | /*
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102 | * CPUã¤ã³ã¿ãã§ã¼ã¹ã®çµäºå¦ç
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103 | */
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104 | void
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105 | gicc_terminate(void)
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106 | {
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107 | sil_wrw_mem(GICC_CTLR, GICC_CTLR_DISABLE);
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108 | }
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109 |
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110 | /*
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111 | * ãã£ã¹ããªãã¥ã¼ã¿ã®æä½
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112 | */
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113 |
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114 | /*
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115 | * ãã£ã¹ããªãã¥ã¼ã¿ã®åæå
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116 | */
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117 | void
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118 | gicd_initialize(void)
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119 | {
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120 | int i;
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121 |
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122 | /*
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123 | * ãã£ã¹ããªãã¥ã¼ã¿ãç¡å¹ã«ãã¦è»¢éãåæ¢
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124 | */
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125 | sil_wrw_mem(GICD_CTLR, GICD_CTLR_DISABLE);
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126 |
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127 | /*
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128 | * ãã¹ã¦ã®å²è¾¼ã¿ã®è»¢éãç¦æ¢
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129 | */
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130 | for (i = 0; i < (GIC_TNUM_INTNO + 31) / 32; i++) {
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131 | sil_wrw_mem(GICD_ICENABLER(i), 0xffffffffU);
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132 | }
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133 |
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134 | /*
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135 | * ãã¹ã¦ã®å²è¾¼ã¿å²è¾¼ã¿ä¿çç¶æ
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136 | ãã¯ãªã¢
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137 | */
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138 | for (i = 0; i < (GIC_TNUM_INTNO + 31) / 32; i++) {
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139 | sil_wrw_mem(GICD_ICPENDR(i), 0xffffffffU);
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140 | }
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141 |
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142 | /*
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143 | * ãã¹ã¦ã®å²è¾¼ã¿ãæä½åªå
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144 | 度ã«è¨å®
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145 | */
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146 | for (i = 0; i < (GIC_TNUM_INTNO + 3) / 4; i++){
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147 | sil_wrw_mem(GICD_IPRIORITYR(i), 0xffffffffU);
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148 | }
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149 | /*
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150 | * ãã¹ã¦ã®å
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151 | ±æããªãã§ã©ã«å²è¾¼ã¿ã®ã¿ã¼ã²ãããããã»ããµ0ã«è¨å®
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152 | */
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153 | for (i = GIC_INTNO_SPI0 / 4; i < (GIC_TNUM_INTNO + 3) / 4; i++) {
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154 | sil_wrw_mem(GICD_ITARGETSR(i), 0x01010101U);
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155 | }
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156 |
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157 | /*
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158 | * ãã¹ã¦ã®ããªãã§ã©ã«å²è¾¼ã¿ãã¬ãã«ããªã¬ã«è¨å®
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159 | */
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160 | for (i = GIC_INTNO_PPI0 / 16; i < (GIC_TNUM_INTNO + 15) / 16; i++) {
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161 | sil_wrw_mem(GICD_ICFGR(i), 0x00000000U);
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162 | }
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163 | /*
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164 | * ãã£ã¹ããªãã¥ã¼ã¿ãæå¹ã«ãã¦åªå
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165 | 度è¦åã«ããå²è¾¼ã¿ã®è»¢éãéå§
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166 | */
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167 | sil_wrw_mem(GICD_CTLR, GICD_CTLR_ENABLE);
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168 | }
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169 |
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170 | /*
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171 | * ãã£ã¹ããªãã¥ã¼ã¿ã®çµäºå¦ç
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172 | */
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173 | void
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174 | gicd_terminate(void)
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175 | {
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176 | sil_wrw_mem(GICD_CTLR, GICD_CTLR_DISABLE);
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177 | }
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178 |
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