summaryrefslogtreecommitdiffstats
path: root/c/src/exec/sapi/src/exinit.c
blob: 2d3261c25635021855fb497ddc5f19dae457ac3f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
/*
 *  Initialization Manager
 *
 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
 *  On-Line Applications Research Corporation (OAR).
 *  All rights assigned to U.S. Government, 1994.
 *
 *  This material may be reproduced by or for the U.S. Government pursuant
 *  to the copyright license under the clause at DFARS 252.227-7013.  This
 *  notice must appear in all copies of this file and its derivatives.
 *
 *  $Id$
 */

/*
 *  INIT is defined so all of the data will be included in this
 *  file.
 */

#define INIT

#include <rtems/system.h>
#include <rtems/config.h>
#include <rtems/copyrt.h>
#include <rtems/clock.h>
#include <rtems/tasks.h>
#include <rtems/debug.h>
#include <rtems/dpmem.h>
#include <rtems/event.h>
#include <rtems/extension.h>
#include <rtems/fatal.h>
#include <rtems/heap.h>
#include <rtems/init.h>
#include <rtems/intthrd.h>
#include <rtems/isr.h>
#include <rtems/intr.h>
#include <rtems/io.h>
#include <rtems/message.h>
#include <rtems/mp.h>
#include <rtems/mpci.h>
#include <rtems/part.h>
#include <rtems/priority.h>
#include <rtems/ratemon.h>
#include <rtems/region.h>
#include <rtems/sem.h>
#include <rtems/signal.h>
#include <rtems/sysstate.h>
#include <rtems/thread.h>
#include <rtems/timer.h>
#include <rtems/tod.h>
#include <rtems/userext.h>
#include <rtems/watchdog.h>
#include <rtems/wkspace.h>

#include <rtems/sptables.h>

/*PAGE
 *
 *  rtems_initialize_executive
 *
 *  This directive initializes all the kernels data structures
 *  to the states necessary for the kernel to begin execution.  All
 *  include files that contain global variable definitions should be
 *  included in this file.  The system threads and initialization threads
 *  are created and started by this routine.  This routine then
 *  initiates multithreading.
 *
 *  Input parameters:
 *    configuration_table - pointer to the user's configuration table
 *    cpu_table           - pointer to the user's CPU configuration table
 *
 *  Output parameters:  NONE
 */

struct months {
  unsigned32 months[2][13];
};

void rtems_initialize_executive(
  rtems_configuration_table *configuration_table,
  rtems_cpu_table           *cpu_table
)
{
  rtems_interrupt_level bsp_level;

  bsp_level = rtems_initialize_executive_early(configuration_table, cpu_table);
  rtems_initialize_executive_late( bsp_level );
}

rtems_interrupt_level rtems_initialize_executive_early(
  rtems_configuration_table *configuration_table,
  rtems_cpu_table           *cpu_table
)
{
  rtems_interrupt_level        bsp_level;
  rtems_multiprocessing_table *multiprocessing_table;

  /*
   *  Dispatching and interrupts are disabled until the end of the
   *  initialization sequence.  This prevents an inadvertent context
   *  switch before the executive is initialized.
   */

  _ISR_Disable( bsp_level );

  _System_state_Set( SYSTEM_STATE_BEFORE_INITIALIZATION );

  _CPU_Initialize( cpu_table, _Thread_Dispatch );

  /*
   *  Do this as early as possible to insure no debugging output
   *  is even attempted to be printed.
   */

  _Debug_Manager_initialization();

  multiprocessing_table = configuration_table->User_multiprocessing_table;
  if ( multiprocessing_table == NULL )
    multiprocessing_table =
      (void *) &_Configuration_Default_multiprocessing_table;

  _Configuration_Handler_initialization(
    configuration_table,
    multiprocessing_table,
    multiprocessing_table->User_mpci_table
  );

  _Attributes_Handler_initialization();

  _Thread_Dispatch_initialization();

  _User_extensions_Handler_initialization(
    configuration_table->User_extension_table
  );

  _Workspace_Handler_initialization(
     (void *)configuration_table->work_space_start,
     configuration_table->work_space_size
  );

  _ISR_Handler_initialization();

  _Objects_Handler_initialization(
    multiprocessing_table->node,
    multiprocessing_table->maximum_global_objects
  );

  _Priority_Handler_initialization();

  _Watchdog_Handler_initialization();

  _TOD_Handler_initialization( configuration_table->microseconds_per_tick );

  _Thread_Handler_initialization(
    configuration_table->maximum_tasks,
    configuration_table->ticks_per_timeslice,
    multiprocessing_table->maximum_proxies
  );

  _MPCI_Handler_initialization();

/* MANAGERS */

  _Interrupt_Manager_initialization();

  _Multiprocessing_Manager_initialization();

  _Timer_Manager_initialization( configuration_table->maximum_timers );

  _Extension_Manager_initialization( configuration_table->maximum_extensions );

  _IO_Manager_initialization(
    configuration_table->Device_driver_table,
    configuration_table->number_of_device_drivers
  );

  _Event_Manager_initialization();

  _Message_queue_Manager_initialization(
    configuration_table->maximum_message_queues
  );

  _Semaphore_Manager_initialization(
    configuration_table->maximum_semaphores
  );

  _Partition_Manager_initialization(
    configuration_table->maximum_partitions
  );

  _Region_Manager_initialization( configuration_table->maximum_regions );

  _Dual_ported_memory_Manager_initialization(
    configuration_table->maximum_ports
  );

  _Rate_monotonic_Manager_initialization(
    configuration_table->maximum_periods
  );

  _Internal_threads_Initialization();

  if ( cpu_table->pretasking_hook )
    (*cpu_table->pretasking_hook)();

  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );

  return bsp_level;
}

void rtems_initialize_executive_late(
  rtems_interrupt_level bsp_level
)
{

  _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING );

  _Thread_Start_multitasking(
    _Internal_threads_System_initialization_thread,
    _Internal_threads_Idle_thread
  );

  /*
   *  Restore the interrupt level to what the BSP had.  Technically,
   *  this is unnecessary since the BSP should have all interrupts
   *  disabled when rtems_initialize_executive is invoked.  But this keeps
   *  the ISR Disable/Enable calls paired.
   */

  _ISR_Enable( bsp_level );
}

/*PAGE
 *
 *  rtems_shutdown_executive
 *
 *  This kernel routine shutdowns the executive.  It halts multitasking
 *  and returns control to the application execution "thread" which
 *  initialially invoked the rtems_initialize_executive directive.
 *
 *  Input parameters:   NONE
 *
 *  Output parameters:  NONE
 */

void rtems_shutdown_executive(
   unsigned32 result
)
{
  _Thread_Stop_multitasking();
}