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1099 | pj | 1 | /* |
2 | * Project: S.Ha.R.K. |
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3 | * |
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4 | * Coordinators: |
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5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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6 | * Paolo Gai <pj@gandalf.sssup.it> |
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7 | * |
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8 | * Authors : |
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9 | * Paolo Gai <pj@gandalf.sssup.it> |
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10 | * (see the web pages for full authors list) |
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11 | * |
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12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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13 | * |
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14 | * http://www.sssup.it |
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15 | * http://retis.sssup.it |
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16 | * http://shark.sssup.it |
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17 | */ |
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18 | |||
19 | /** |
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20 | ------------ |
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1377 | giacomo | 21 | CVS : $Id: iaster3.c,v 1.2 2004-04-17 11:36:13 giacomo Exp $ |
1099 | pj | 22 | |
23 | File: $File$ |
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1377 | giacomo | 24 | Revision: $Revision: 1.2 $ |
25 | Last update: $Date: 2004-04-17 11:36:13 $ |
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1099 | pj | 26 | ------------ |
27 | |||
28 | System initialization file |
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29 | |||
30 | The tick is set to TICK ms. |
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31 | |||
32 | This file contains the 2 functions needed to initialize the system. |
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33 | |||
34 | These functions register the following levels: |
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35 | |||
36 | an EDF (Earliest Deadline First) level |
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37 | a RR (Round Robin) level |
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38 | a TBS (Total Bandwidth Server) level 0.1 Us |
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39 | a TBS (Total Bandwidth Server) level 0.3 Us |
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40 | a Dummy level |
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41 | |||
42 | The TBS bandwidth is TBS_NUM/TBS_DEN |
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43 | |||
44 | |||
45 | It can accept these task models (into () the mandatory fields): |
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46 | |||
47 | HARD_TASK_MODEL (wcet+mit) at level 0 |
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48 | NRT_TASK_MODEL at level 1 |
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49 | SOFT_TASK_MODEL (wcet, periodicity=APERIODIC) at level 2,3 |
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50 | |||
51 | **/ |
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52 | |||
53 | /* |
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54 | * Copyright (C) 2000 Paolo Gai |
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55 | * |
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56 | * This program is free software; you can redistribute it and/or modify |
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57 | * it under the terms of the GNU General Public License as published by |
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58 | * the Free Software Foundation; either version 2 of the License, or |
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59 | * (at your option) any later version. |
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60 | * |
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61 | * This program is distributed in the hope that it will be useful, |
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62 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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63 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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64 | * GNU General Public License for more details. |
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65 | * |
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66 | * You should have received a copy of the GNU General Public License |
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67 | * along with this program; if not, write to the Free Software |
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68 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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69 | * |
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70 | */ |
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71 | |||
72 | |||
73 | |||
74 | #include "kernel/kern.h" |
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75 | #include "modules/edf.h" |
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76 | #include "modules/rr.h" |
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77 | #include "modules/tbs.h" |
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78 | #include "modules/dummy.h" |
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79 | |||
80 | |||
81 | /*+ sysyem tick in us +*/ |
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82 | #define TICK 1200 |
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83 | |||
84 | #define RRTICK 5000 |
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85 | #define TBS_NUM 1 |
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86 | #define TBS_DEN 10 |
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87 | |||
88 | |||
89 | TIME __kernel_register_levels__(void *arg) |
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90 | { |
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91 | struct multiboot_info *mb = (struct multiboot_info *)arg; |
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92 | |||
93 | EDF_register_level(EDF_ENABLE_ALL); |
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94 | RR_register_level(RRTICK, RR_MAIN_YES, mb); |
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95 | TBS_register_level(TBS_ENABLE_ALL, 0, TBS_NUM, TBS_DEN); |
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96 | TBS_register_level(TBS_ENABLE_ALL, 0, TBS_NUM*3, TBS_DEN); |
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97 | dummy_register_level(); |
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98 | |||
99 | return TICK; |
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100 | } |
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101 | |||
102 | TASK __init__(void *arg) |
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103 | { |
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104 | struct multiboot_info *mb = (struct multiboot_info *)arg; |
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105 | |||
106 | __call_main__(mb); |
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107 | |||
108 | return (void *)0; |
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109 | } |
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110 |