[270] | 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) 2013-2016 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 | *
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| 8 | * ä¸è¨èä½æ¨©è
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| 9 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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| 10 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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| 11 | * å¤ã»åé
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| 12 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 13 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 14 | * 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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| 15 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 16 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 17 | * ç¨ã§ããå½¢ã§åé
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| 18 | å¸ããå ´åã«ã¯ï¼åé
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| 19 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 20 | * è
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| 21 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 22 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 23 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 24 | * ç¨ã§ããªãå½¢ã§åé
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| 25 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 26 | * ã¨ï¼
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| 27 | * (a) åé
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| 28 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 29 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 30 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 31 | * (b) åé
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| 32 | å¸ã®å½¢æ
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| 33 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 34 | * å ±åãããã¨ï¼
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| 35 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 36 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 37 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 38 | 責ãããã¨ï¼
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| 39 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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| 40 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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| 41 | ããã³TOPPERSããã¸ã§ã¯ãã
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| 42 | * å
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| 43 | 責ãããã¨ï¼
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| 44 | *
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| 45 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 46 | ã
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| 47 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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| 48 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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| 49 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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| 50 | * ã®è²¬ä»»ãè² ããªãï¼
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| 51 | *
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| 52 | * $Id: core_pl310.c 270 2017-02-09 04:03:47Z coas-nagasima $
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| 53 | */
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| 54 |
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| 55 | /*
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| 56 | * L2ãã£ãã·ã¥ã³ã³ããã¼ã©ï¼PL310ï¼ã®æä½ã©ã¤ãã©ãª
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| 57 | */
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| 58 |
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| 59 | #include "kernel_impl.h"
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| 60 | #include "core_pl310.h"
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| 61 |
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| 62 | Inline uint32_t
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| 63 | get_way_mask(void)
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| 64 | {
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| 65 | uint32_t aux;
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| 66 |
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| 67 | aux = sil_rew_mem(PL310_AUX_CTRL);
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| 68 | if ((aux & PL310_AUX_CTRL_ASSOCIATIVITY) != 0U) {
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| 69 | /* 16ã¦ã§ã¤ */
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| 70 | return(0x0000ffffU);
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| 71 | }
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| 72 | else {
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| 73 | /* 8ã¦ã§ã¤ */
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| 74 | return(0x000000ffU);
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| 75 | }
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| 76 | }
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| 77 |
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| 78 | Inline void
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| 79 | pl310_cache_sync(void)
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| 80 | {
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| 81 | sil_wrw_mem(PL310_CACHE_SYNC, 0);
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| 82 | }
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| 83 |
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| 84 | Inline void
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| 85 | pl310_inv_all(void)
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| 86 | {
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| 87 | uint32_t way_mask = get_way_mask();
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| 88 |
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| 89 | /* ãã¹ã¦ã®ã¦ã§ã¤ãç¡å¹åãã */
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| 90 | sil_wrw_mem(PL310_INV_WAY, 0xffff);
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| 91 | while ((sil_rew_mem(PL310_INV_WAY) & way_mask) != 0U) ;
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| 92 | pl310_cache_sync();
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| 93 | }
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| 94 |
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| 95 | Inline void
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| 96 | pl310_debug_set(uint32_t val)
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| 97 | {
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| 98 | sil_wrw_mem(PL310_DEBUG_CTRL, val);
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| 99 | }
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| 100 |
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| 101 | /*
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| 102 | * PL310ã®åæå
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| 103 | */
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| 104 | void
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| 105 | pl310_initialize(uint32_t aux_val, uint32_t aux_mask)
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| 106 | {
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| 107 | uint32_t aux;
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| 108 | uint32_t prefetch;
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| 109 | uint32_t prefetch_val = 0U;
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| 110 |
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| 111 | /* L2ãã£ãã·ã¥ããã£ã¹ã¨ã¼ãã«ã®å ´åã®ã¿åæåãè¡ã */
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| 112 | if ((sil_rew_mem(PL310_CTRL) & 0x01) == 0U) {
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| 113 | /* å
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| 114 | ±æå±æ§ãç¡è¦ãã */
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| 115 | aux_val |= PL310_AUX_CTRL_IGNORE_SHARE;
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| 116 |
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| 117 | /* å½ä»¤ããªãã§ãããã¤ãã¼ãã« */
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| 118 | aux_val |= PL310_AUX_CTRL_INST_PREFETCH;
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| 119 | prefetch_val |= PL310_AUX_CTRL_INST_PREFETCH;
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| 120 |
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| 121 | /* ãã¼ã¿ããªãã§ãããã¤ãã¼ãã« */
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| 122 | aux_val |= PL310_AUX_CTRL_DATA_PREFETCH;
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| 123 | prefetch_val |= PL310_AUX_CTRL_DATA_PREFETCH;
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| 124 |
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| 125 | /* ããã«ã©ã¤ã³ãã£ã«ãã¤ãã¼ãã« */
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| 126 | prefetch_val |= PL310_PREFETCH_CTRL_DLINEFILL;
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| 127 | prefetch_val |= PL310_PREFETCH_CTRL_INCR_DLINEFILL;
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| 128 |
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| 129 | /* è£å©å¶å¾¡ã¬ã¸ã¹ã¿ãè¨å® */
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| 130 | aux = sil_rew_mem(PL310_AUX_CTRL);
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| 131 | sil_wrw_mem(PL310_AUX_CTRL, ((aux & aux_mask) | aux_val));
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| 132 |
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| 133 | /* ããªãã§ããå¶å¾¡ã¬ã¸ã¹ã¿ãè¨å® */
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| 134 | prefetch = sil_rew_mem(PL310_PREFETCH_CTRL);
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| 135 | sil_wrw_mem(PL310_PREFETCH_CTRL, (prefetch | prefetch_val));
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| 136 |
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| 137 | /* L2ãã£ãã·ã¥ã®å
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| 138 | ¨ä½ã®ç¡å¹å */
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| 139 | pl310_inv_all();
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| 140 |
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| 141 | /* ã¯ããã¯ã²ã¼ãã£ã³ã°ã¨ã¹ã¿ã³ãã¤ã¢ã¼ããã¤ãã¼ãã« */
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| 142 | sil_wrw_mem(PL310_POWER_CTRL, 0x03);
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| 143 |
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| 144 | /* L2ãã£ãã·ã¥ã®ã¤ãã¼ãã« */
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| 145 | sil_wrw_mem(PL310_CTRL, 0x01);
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| 146 | }
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| 147 | }
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| 148 |
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| 149 | /*
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| 150 | * L2ãã£ãã·ã¥ã®ãã£ã¹ã¨ã¼ãã«
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| 151 | */
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| 152 | void
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| 153 | pl310_disable(void)
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| 154 | {
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| 155 | pl310_clean_and_invalidate_all();
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| 156 | sil_wrw_mem(PL310_CTRL, 0x00);
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| 157 | }
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| 158 |
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| 159 | /*
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| 160 | * L2ãã£ãã·ã¥å
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| 161 | ¨ä½ã®ç¡å¹åï¼æ¸ãæ»ããªãï¼
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| 162 | */
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| 163 | void
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| 164 | pl310_invalidate_all(void)
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| 165 | {
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| 166 | pl310_debug_set(0x03);
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| 167 | pl310_inv_all();
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| 168 | pl310_debug_set(0x00);
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| 169 | }
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| 170 |
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| 171 | /*
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| 172 | * L2ãã£ãã·ã¥å
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| 173 | ¨ä½ã®ã¯ãªã¼ã³ã¨ç¡å¹å
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| 174 | */
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| 175 | void
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| 176 | pl310_clean_and_invalidate_all(void)
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| 177 | {
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| 178 | uint32_t way_mask = get_way_mask();
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| 179 |
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| 180 | pl310_debug_set(0x03);
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| 181 | sil_wrw_mem(PL310_CLEAN_INV_WAY, way_mask);
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| 182 | while ((sil_rew_mem(PL310_CLEAN_INV_WAY) & way_mask) != 0U) ;
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| 183 | pl310_cache_sync();
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| 184 | pl310_debug_set(0x00);
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| 185 | }
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