[ac7d5ef0] | 1 | /* |
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| 2 | * Initialization Manager |
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| 3 | * |
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| 4 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * All rights assigned to U.S. Government, 1994. |
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| 7 | * |
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| 8 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 9 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 10 | * notice must appear in all copies of this file and its derivatives. |
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| 11 | * |
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| 12 | * $Id$ |
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| 13 | */ |
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| 14 | |
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| 15 | /* |
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| 16 | * INIT is defined so all of the data will be included in this |
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| 17 | * file. |
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| 18 | */ |
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| 19 | |
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| 20 | #define INIT |
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| 21 | |
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| 22 | #include <rtems/system.h> |
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| 23 | #include <rtems/config.h> |
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| 24 | #include <rtems/debug.h> |
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| 25 | #include <rtems/extension.h> |
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| 26 | #include <rtems/fatal.h> |
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| 27 | #include <rtems/init.h> |
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| 28 | #include <rtems/io.h> |
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| 29 | #include <rtems/sysstate.h> |
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| 30 | |
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[3a4ae6c] | 31 | #include <rtems/core/copyrt.h> |
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| 32 | #include <rtems/core/heap.h> |
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| 33 | #include <rtems/core/interr.h> |
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| 34 | #include <rtems/core/intthrd.h> |
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| 35 | #include <rtems/core/isr.h> |
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| 36 | #include <rtems/core/mpci.h> |
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| 37 | #include <rtems/core/priority.h> |
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| 38 | #include <rtems/core/thread.h> |
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| 39 | #include <rtems/core/tod.h> |
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| 40 | #include <rtems/core/userext.h> |
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| 41 | #include <rtems/core/watchdog.h> |
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| 42 | #include <rtems/core/wkspace.h> |
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| 43 | |
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| 44 | #include <rtems/directives.h> |
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[ac7d5ef0] | 45 | #include <rtems/sptables.h> |
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| 46 | |
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[3a4ae6c] | 47 | #include <rtems/rtems/rtemsapi.h> |
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| 48 | |
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[ac7d5ef0] | 49 | /*PAGE |
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| 50 | * |
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| 51 | * rtems_initialize_executive |
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| 52 | * |
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| 53 | * This directive initializes all the kernels data structures |
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| 54 | * to the states necessary for the kernel to begin execution. All |
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| 55 | * include files that contain global variable definitions should be |
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| 56 | * included in this file. The system threads and initialization threads |
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| 57 | * are created and started by this routine. This routine then |
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| 58 | * initiates multithreading. |
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| 59 | * |
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| 60 | * Input parameters: |
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| 61 | * configuration_table - pointer to the user's configuration table |
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| 62 | * cpu_table - pointer to the user's CPU configuration table |
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| 63 | * |
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| 64 | * Output parameters: NONE |
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| 65 | */ |
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| 66 | |
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| 67 | struct months { |
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| 68 | unsigned32 months[2][13]; |
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| 69 | }; |
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| 70 | |
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| 71 | void rtems_initialize_executive( |
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| 72 | rtems_configuration_table *configuration_table, |
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| 73 | rtems_cpu_table *cpu_table |
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| 74 | ) |
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| 75 | { |
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| 76 | rtems_interrupt_level bsp_level; |
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| 77 | |
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| 78 | bsp_level = rtems_initialize_executive_early(configuration_table, cpu_table); |
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| 79 | rtems_initialize_executive_late( bsp_level ); |
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| 80 | } |
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| 81 | |
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| 82 | rtems_interrupt_level rtems_initialize_executive_early( |
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| 83 | rtems_configuration_table *configuration_table, |
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| 84 | rtems_cpu_table *cpu_table |
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| 85 | ) |
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| 86 | { |
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| 87 | rtems_interrupt_level bsp_level; |
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| 88 | rtems_multiprocessing_table *multiprocessing_table; |
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| 89 | |
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| 90 | /* |
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| 91 | * Dispatching and interrupts are disabled until the end of the |
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| 92 | * initialization sequence. This prevents an inadvertent context |
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| 93 | * switch before the executive is initialized. |
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| 94 | */ |
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| 95 | |
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| 96 | _ISR_Disable( bsp_level ); |
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| 97 | |
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[3a4ae6c] | 98 | if ( cpu_table == NULL ) |
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| 99 | _Internal_error_Occurred( |
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| 100 | INTERNAL_ERROR_CORE, |
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| 101 | TRUE, |
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| 102 | INTERNAL_ERROR_NO_CONFIGURATION_TABLE |
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| 103 | ); |
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[ac7d5ef0] | 104 | |
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[3a4ae6c] | 105 | /* |
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| 106 | * Initialize the system state based on whether this is an MP system. |
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| 107 | */ |
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| 108 | |
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| 109 | multiprocessing_table = configuration_table->User_multiprocessing_table; |
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| 110 | |
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| 111 | _System_state_Handler_initialization( |
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| 112 | (multiprocessing_table) ? TRUE : FALSE |
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| 113 | ); |
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[ac7d5ef0] | 114 | |
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[88d594a] | 115 | /* |
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[3a4ae6c] | 116 | * Provided just for user convenience. |
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[88d594a] | 117 | */ |
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| 118 | |
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[3a4ae6c] | 119 | _Configuration_Table = configuration_table; |
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| 120 | _Configuration_MP_table = multiprocessing_table; |
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| 121 | |
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| 122 | /* |
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| 123 | * Internally we view single processor systems as a very restricted |
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| 124 | * multiprocessor system. |
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| 125 | */ |
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[88d594a] | 126 | |
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[ac7d5ef0] | 127 | if ( multiprocessing_table == NULL ) |
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[3a4ae6c] | 128 | multiprocessing_table = |
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| 129 | (void *)&_Initialization_Default_multiprocessing_table; |
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[ac7d5ef0] | 130 | |
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[3a4ae6c] | 131 | if ( cpu_table == NULL ) |
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| 132 | _Internal_error_Occurred( |
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| 133 | INTERNAL_ERROR_CORE, |
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| 134 | TRUE, |
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| 135 | INTERNAL_ERROR_NO_CPU_TABLE |
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| 136 | ); |
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| 137 | |
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| 138 | _CPU_Initialize( cpu_table, _Thread_Dispatch ); |
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[ac7d5ef0] | 139 | |
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[3a4ae6c] | 140 | /* |
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| 141 | * Do this as early as possible to insure no debugging output |
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| 142 | * is even attempted to be printed. |
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| 143 | */ |
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| 144 | |
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| 145 | _Debug_Manager_initialization(); |
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[ac7d5ef0] | 146 | |
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| 147 | _Thread_Dispatch_initialization(); |
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| 148 | |
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| 149 | _User_extensions_Handler_initialization( |
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| 150 | configuration_table->User_extension_table |
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| 151 | ); |
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| 152 | |
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| 153 | _Workspace_Handler_initialization( |
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| 154 | (void *)configuration_table->work_space_start, |
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| 155 | configuration_table->work_space_size |
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| 156 | ); |
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| 157 | |
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| 158 | _ISR_Handler_initialization(); |
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| 159 | |
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| 160 | _Objects_Handler_initialization( |
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| 161 | multiprocessing_table->node, |
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[3a4ae6c] | 162 | multiprocessing_table->maximum_nodes, |
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[ac7d5ef0] | 163 | multiprocessing_table->maximum_global_objects |
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| 164 | ); |
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| 165 | |
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| 166 | _Priority_Handler_initialization(); |
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| 167 | |
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| 168 | _Watchdog_Handler_initialization(); |
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| 169 | |
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| 170 | _TOD_Handler_initialization( configuration_table->microseconds_per_tick ); |
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| 171 | |
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| 172 | _Thread_Handler_initialization( |
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| 173 | configuration_table->ticks_per_timeslice, |
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[3a4ae6c] | 174 | configuration_table->maximum_extensions, |
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[ac7d5ef0] | 175 | multiprocessing_table->maximum_proxies |
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| 176 | ); |
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| 177 | |
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[3a4ae6c] | 178 | _MPCI_Handler_initialization( |
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| 179 | multiprocessing_table->User_mpci_table |
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| 180 | ); |
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[ac7d5ef0] | 181 | |
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[3a4ae6c] | 182 | _Internal_threads_Initialization(); |
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[5250ff39] | 183 | |
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[3a4ae6c] | 184 | /* MANAGERS */ |
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[ac7d5ef0] | 185 | |
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| 186 | _Extension_Manager_initialization( configuration_table->maximum_extensions ); |
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| 187 | |
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| 188 | _IO_Manager_initialization( |
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| 189 | configuration_table->Device_driver_table, |
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[3a4ae6c] | 190 | configuration_table->number_of_device_drivers, |
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| 191 | configuration_table->maximum_devices |
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[ac7d5ef0] | 192 | ); |
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| 193 | |
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[3a4ae6c] | 194 | _RTEMS_API_Initialize( configuration_table ); |
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[ac7d5ef0] | 195 | |
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| 196 | if ( cpu_table->pretasking_hook ) |
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| 197 | (*cpu_table->pretasking_hook)(); |
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| 198 | |
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[3a4ae6c] | 199 | _Internal_threads_Start(); |
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| 200 | |
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[ac7d5ef0] | 201 | _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING ); |
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| 202 | |
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| 203 | return bsp_level; |
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| 204 | } |
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| 205 | |
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| 206 | void rtems_initialize_executive_late( |
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| 207 | rtems_interrupt_level bsp_level |
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| 208 | ) |
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| 209 | { |
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| 210 | |
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| 211 | _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING ); |
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| 212 | |
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| 213 | _Thread_Start_multitasking( |
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| 214 | _Internal_threads_System_initialization_thread, |
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| 215 | _Internal_threads_Idle_thread |
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| 216 | ); |
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| 217 | |
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| 218 | /* |
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| 219 | * Restore the interrupt level to what the BSP had. Technically, |
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| 220 | * this is unnecessary since the BSP should have all interrupts |
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| 221 | * disabled when rtems_initialize_executive is invoked. But this keeps |
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| 222 | * the ISR Disable/Enable calls paired. |
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| 223 | */ |
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| 224 | |
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| 225 | _ISR_Enable( bsp_level ); |
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| 226 | } |
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| 227 | |
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| 228 | /*PAGE |
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| 229 | * |
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| 230 | * rtems_shutdown_executive |
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| 231 | * |
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| 232 | * This kernel routine shutdowns the executive. It halts multitasking |
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| 233 | * and returns control to the application execution "thread" which |
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| 234 | * initialially invoked the rtems_initialize_executive directive. |
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| 235 | * |
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| 236 | * Input parameters: NONE |
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| 237 | * |
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| 238 | * Output parameters: NONE |
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| 239 | */ |
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| 240 | |
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| 241 | void rtems_shutdown_executive( |
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| 242 | unsigned32 result |
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| 243 | ) |
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| 244 | { |
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| 245 | _Thread_Stop_multitasking(); |
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| 246 | } |
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