1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSImplClassic |
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7 | * |
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8 | * @brief This source file contains the definition of ::_Copyright_Notice, |
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9 | * ::_Objects_Information_table, the flexible per-CPU data linker set limits, |
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10 | * the system initialization linker set limits and the implementation of |
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11 | * rtems_initialize_executive(). |
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12 | */ |
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13 | |
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14 | /* |
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15 | * COPYRIGHT (c) 1989-2014. |
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16 | * On-Line Applications Research Corporation (OAR). |
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17 | * |
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18 | * Redistribution and use in source and binary forms, with or without |
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19 | * modification, are permitted provided that the following conditions |
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20 | * are met: |
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21 | * 1. Redistributions of source code must retain the above copyright |
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22 | * notice, this list of conditions and the following disclaimer. |
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23 | * 2. Redistributions in binary form must reproduce the above copyright |
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24 | * notice, this list of conditions and the following disclaimer in the |
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25 | * documentation and/or other materials provided with the distribution. |
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26 | * |
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27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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28 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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31 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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32 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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33 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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34 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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35 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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36 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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37 | * POSSIBILITY OF SUCH DAMAGE. |
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38 | */ |
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39 | |
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40 | #ifdef HAVE_CONFIG_H |
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41 | #include "config.h" |
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42 | #endif |
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43 | |
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44 | #include <rtems/config.h> |
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45 | #include <rtems/extensionimpl.h> |
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46 | #include <rtems/init.h> |
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47 | #include <rtems/sysinit.h> |
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48 | #include <rtems/score/sysstate.h> |
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49 | |
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50 | #include <rtems/score/copyrt.h> |
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51 | #include <rtems/score/heap.h> |
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52 | #include <rtems/score/interr.h> |
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53 | #include <rtems/score/isr.h> |
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54 | #include <rtems/score/priority.h> |
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55 | #include <rtems/score/schedulerimpl.h> |
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56 | #include <rtems/score/smpimpl.h> |
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57 | #include <rtems/score/timecounter.h> |
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58 | #include <rtems/score/threadimpl.h> |
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59 | #include <rtems/score/todimpl.h> |
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60 | |
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61 | RTEMS_SECTION(".rtemsroset.copyright") const char _Copyright_Notice[] = |
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62 | "Copyright (C) 1989, 2021 RTEMS Project and contributors"; |
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63 | |
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64 | static Objects_Information * |
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65 | _Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ]; |
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66 | |
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67 | static Objects_Information *_RTEMS_Objects[ OBJECTS_RTEMS_CLASSES_LAST + 1 ]; |
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68 | |
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69 | static Objects_Information *_POSIX_Objects[ OBJECTS_POSIX_CLASSES_LAST + 1 ]; |
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70 | |
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71 | Objects_Information ** const |
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72 | _Objects_Information_table[ OBJECTS_APIS_LAST + 1 ] = { |
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73 | NULL, |
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74 | &_Internal_Objects[ 0 ], |
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75 | &_RTEMS_Objects[ 0 ], |
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76 | &_POSIX_Objects[ 0 ] |
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77 | }; |
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78 | |
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79 | static void rtems_initialize_data_structures(void) |
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80 | { |
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81 | /* |
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82 | * Dispatching and interrupts are disabled until the end of the |
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83 | * initialization sequence. This prevents an inadvertent context |
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84 | * switch before the executive is initialized. |
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85 | * |
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86 | * WARNING: Interrupts should have been disabled by the BSP and |
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87 | * are disabled by boot_card(). |
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88 | */ |
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89 | |
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90 | /* |
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91 | * Initialize any target architecture specific support as early as possible |
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92 | */ |
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93 | _CPU_Initialize(); |
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94 | |
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95 | _Thread_Dispatch_initialization(); |
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96 | |
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97 | _ISR_Handler_initialization(); |
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98 | |
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99 | _Thread_Handler_initialization(); |
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100 | |
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101 | _Scheduler_Handler_initialization(); |
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102 | |
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103 | _SMP_Handler_initialize(); |
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104 | } |
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105 | |
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106 | RTEMS_LINKER_ROSET( _Sysinit, rtems_sysinit_item ); |
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107 | |
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108 | RTEMS_SYSINIT_ITEM( |
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109 | rtems_initialize_data_structures, |
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110 | RTEMS_SYSINIT_DATA_STRUCTURES, |
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111 | RTEMS_SYSINIT_ORDER_MIDDLE |
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112 | ); |
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113 | |
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114 | /* |
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115 | * No threads should be created before this point!!! |
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116 | * _Thread_Executing and _Thread_Heir are not set. |
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117 | * |
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118 | * At this point all API extensions are in place. After the call to |
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119 | * _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set. |
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120 | * |
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121 | * Scheduling can properly occur afterwards as long as we avoid dispatching. |
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122 | */ |
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123 | RTEMS_SYSINIT_ITEM( |
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124 | _Thread_Create_idle, |
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125 | RTEMS_SYSINIT_IDLE_THREADS, |
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126 | RTEMS_SYSINIT_ORDER_MIDDLE |
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127 | ); |
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128 | |
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129 | void rtems_initialize_executive(void) |
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130 | { |
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131 | const rtems_sysinit_item *item; |
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132 | |
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133 | /* Invoke the registered system initialization handlers */ |
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134 | RTEMS_LINKER_SET_FOREACH( _Sysinit, item ) { |
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135 | ( *item->handler )(); |
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136 | } |
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137 | |
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138 | _System_state_Set( SYSTEM_STATE_UP ); |
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139 | |
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140 | _SMP_Request_start_multitasking(); |
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141 | |
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142 | _Thread_Start_multitasking(); |
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143 | |
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144 | /******************************************************************* |
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145 | ******************************************************************* |
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146 | ******************************************************************* |
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147 | ****** APPLICATION RUNS HERE ****** |
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148 | ****** THE FUNCTION NEVER RETURNS ****** |
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149 | ******************************************************************* |
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150 | ******************************************************************* |
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151 | *******************************************************************/ |
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152 | } |
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