[61] | 1 | /*
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| 2 | * TOPPERS/ASP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Advanced Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2007 by Embedded and Real-Time Systems Laboratory
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| 7 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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| 8 | *
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| 9 | * ãLì ÒÍCȺÌ(1)`(4)Ìðð½·êÉÀèC{\tgEF
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| 10 | * Ai{\tgEFAðüϵ½àÌðÜÞDȺ¯¶jðgpE¡»Eü
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| 11 | * ÏEÄzziȺCpÆÄÔj·é±Æð³Åø·éD
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| 12 | * (1) {\tgEFAð\[XR[hÌ`Åp·éêÉÍCãLÌì
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| 13 | * \¦C±Ìpð¨æѺL̳ÛØKèªC»ÌÜÜÌ`Å\[
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| 14 | * XR[hÉÜÜêÄ¢é±ÆD
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| 15 | * (2) {\tgEFAðCCu`®ÈÇC¼Ì\tgEFAJÉg
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| 16 | * pÅ«é`ÅÄzz·éêÉÍCÄzzɺ¤hL
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| 17 | gip
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| 18 | * Ò}j
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| 19 | AÈÇjÉCãLÌì \¦C±Ìpð¨æѺL
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| 20 | * ̳ÛØKèðfÚ·é±ÆD
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| 21 | * (3) {\tgEFAðC@íÉgÝÞÈÇC¼Ì\tgEFAJÉg
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| 22 | * pÅ«È¢`ÅÄzz·éêÉÍCÌ¢¸ê©Ìðð½·±
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| 23 | * ÆD
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| 24 | * (a) Äzzɺ¤hL
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| 25 | gipÒ}j
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| 26 | AÈÇjÉCãLÌ
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| 27 | * ì \¦C±Ìpð¨æѺL̳ÛØKèðfÚ·é±ÆD
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| 28 | * (b) ÄzzÌ`ÔðCÊÉèßéû@ÉæÁÄCTOPPERSvWFNgÉ
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| 29 | * ñ·é±ÆD
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| 30 | * (4) {\tgEFAÌpÉæè¼ÚIܽÍÔÚIɶ¶é¢©Èé¹
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| 31 | * Q©çàCãLì Ò¨æÑTOPPERSvWFNgðÆÓ·é±ÆD
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| 32 | * ܽC{\tgEFAÌ[UܽÍGh[U©çÌ¢©Èé
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| 33 | * RÉîÿ©çàCãLì Ò¨æÑTOPPERSvWFNgð
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| 34 | * ÆÓ·é±ÆD
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| 35 | *
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| 36 | * {\tgEFAÍC³ÛØÅñ³êÄ¢éàÌÅ éDãLì Ò¨
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| 37 | * æÑTOPPERSvWFNgÍC{\tgEFAÉÖµÄCÁèÌgpÚI
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| 38 | * ÉηéK«àÜßÄC¢©ÈéÛØàsíÈ¢DܽC{\tgEF
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| 39 | * AÌpÉæè¼ÚIܽÍÔÚIɶ¶½¢©Èé¹QÉÖµÄàC»
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| 40 | * ÌÓCðíÈ¢D
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| 41 | *
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| 42 | */
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| 43 |
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| 44 | /*
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| 45 | * ^C}hCoiSYSTICpj
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| 46 | */
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| 47 | #include <sil.h>
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| 48 | #include "kernel_impl.h"
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| 49 | #include "time_event.h"
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| 50 | #include "target_timer.h"
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| 51 |
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| 52 | /*
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| 53 | * ^C}ÌN®
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| 54 | */
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| 55 | void
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| 56 | target_timer_initialize(intptr_t exinf)
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| 57 | {
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| 58 | CLOCK cyc;
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| 59 | uint32_t tmp;
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| 60 |
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| 61 | #ifdef SYSTIC_USE_CALIBRATION
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| 62 | /* CALIBRATIONWX^Ìlðgp */
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| 63 | cyc = (sil_rew_mem((void *)SYSTIC_CALIBRATION) & SYSTIC_TENMS) / 10;
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| 64 | #else
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| 65 | cyc = TO_CLOCK(TIC_NUME, TIC_DENO) - 1;
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| 66 | #endif /* SYSTIC_USE_CALIBRATION */
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| 67 |
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| 68 | /* â~ */
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| 69 | tmp = sil_rew_mem((void *)SYSTIC_CONTROL_STATUS);
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| 70 | tmp &= ~SYSTIC_ENABLE;
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| 71 | sil_wrw_mem((void *)SYSTIC_CONTROL_STATUS, tmp);
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| 72 |
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| 73 | sil_wrw_mem((void *)SYSTIC_RELOAD_VALUE, cyc);
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| 74 | sil_wrw_mem((void *)SYSTIC_CURRENT_VALUE, cyc);
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| 75 |
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| 76 | tmp = sil_rew_mem((void *)SYSTIC_CONTROL_STATUS);
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| 77 |
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| 78 | #ifdef SYSTIC_USE_STCLK
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| 79 | /* ONbNÌgp */
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| 80 | tmp |= SYSTIC_ENABLE;
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| 81 | #else
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| 82 | /* vZbTNbNÌgp */
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| 83 | tmp |= SYSTIC_ENABLE|SYSTIC_CLKSOURCE;
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| 84 | #endif /* SYSTIC_USE_STCLK */
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| 85 |
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| 86 | sil_wrw_mem((void *)SYSTIC_CONTROL_STATUS, tmp);
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| 87 | }
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| 88 |
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| 89 | /*
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| 90 | * ^C}Ìâ~
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| 91 | */
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| 92 | void
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| 93 | target_timer_terminate(intptr_t exinf)
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| 94 | {
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| 95 | /* ^C}ðâ~ */
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| 96 | sil_wrw_mem((void*)SYSTIC_CONTROL_STATUS, 0x00);
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| 97 | }
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| 98 |
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| 99 | /*
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| 100 | * ^C}Ýnh
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| 101 | */
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| 102 | void
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| 103 | target_timer_handler(void)
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| 104 | {
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| 105 | uint32_t tmp;
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| 106 |
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| 107 | /* probe_int ̽ßCCOUNTFLAGðNA */
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| 108 | tmp = sil_rew_mem((void *)SYSTIC_CURRENT_VALUE);
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| 109 |
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| 110 | i_begin_int(INTNO_TIMER);
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| 111 | signal_time(); /* ^CeBbNÌ */
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| 112 | i_end_int(INTNO_TIMER);
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| 113 | }
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