source: rtems/cpukit/sapi/src/exinit.c @ 471998ec

4.104.114.84.9
Last change on this file since 471998ec was 471998ec, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 5, 2007 at 8:55:18 PM

2007-03-05 Joel Sherrill <joel@…>

  • sapi/src/exinit.c: Fix spacing.
  • Property mode set to 100644
File size: 7.0 KB
Line 
1/*
2 *  Initialization Manager
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14#if HAVE_CONFIG_H
15#include "config.h"
16#endif
17
18/*
19 *  SCORE_INIT and SAPI_INIT are defined so all of the super core and
20 *  super API data will be included in this object file.
21 */
22
23#define SAPI_INIT
24#define SCORE_INIT
25
26#include <rtems/system.h>
27#include <rtems/config.h>
28#include <rtems/debug.h>
29#include <rtems/extension.h>
30#include <rtems/fatal.h>
31#include <rtems/init.h>
32#include <rtems/io.h>
33#include <rtems/score/sysstate.h>
34
35#include <rtems/score/apiext.h>
36#include <rtems/score/apimutex.h>
37#include <rtems/score/copyrt.h>
38#include <rtems/score/heap.h>
39#include <rtems/score/interr.h>
40#include <rtems/score/isr.h>
41#if defined(RTEMS_MULTIPROCESSING)
42#include <rtems/score/mpci.h>
43#endif
44#include <rtems/score/priority.h>
45#include <rtems/score/thread.h>
46#include <rtems/score/tod.h>
47#include <rtems/score/userext.h>
48#include <rtems/score/watchdog.h>
49#include <rtems/score/wkspace.h>
50
51#include <rtems/sptables.h>
52
53
54#include <rtems/rtems/rtemsapi.h>
55#ifdef RTEMS_POSIX_API
56#include <rtems/posix/posixapi.h>
57#endif
58#ifdef RTEMS_ITRON_API
59#include <rtems/itron/itronapi.h>
60#endif
61
62Objects_Information *_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
63
64rtems_interrupt_level rtems_initialize_executive_early(
65  rtems_configuration_table *configuration_table,
66  rtems_cpu_table           *cpu_table
67)
68{
69  rtems_interrupt_level        bsp_level;
70  rtems_multiprocessing_table *multiprocessing_table;
71
72  /*
73   *  Dispatching and interrupts are disabled until the end of the
74   *  initialization sequence.  This prevents an inadvertent context
75   *  switch before the executive is initialized.
76   */
77
78  _ISR_Disable( bsp_level );
79
80  if ( configuration_table == NULL )
81    _Internal_error_Occurred(
82      INTERNAL_ERROR_CORE,
83      TRUE,
84      INTERNAL_ERROR_NO_CONFIGURATION_TABLE
85    );
86
87  /*
88   *  Initialize the system state based on whether this is an MP system.
89   */
90
91#if defined(RTEMS_MULTIPROCESSING)
92  multiprocessing_table = configuration_table->User_multiprocessing_table;
93
94  _System_state_Handler_initialization(
95    (multiprocessing_table) ? TRUE : FALSE
96  );
97#else
98  multiprocessing_table = NULL;
99
100  _System_state_Handler_initialization( FALSE );
101#endif
102
103  /*
104   *  Provided just for user convenience.
105   */
106
107  _Configuration_Table    = configuration_table;
108  _Configuration_MP_table = multiprocessing_table;
109
110  /*
111   *  Internally we view single processor systems as a very restricted
112   *  multiprocessor system.
113   */
114
115  if ( multiprocessing_table == NULL )
116    multiprocessing_table =
117      (void *)&_Initialization_Default_multiprocessing_table;
118
119  if ( cpu_table == NULL )
120    _Internal_error_Occurred(
121      INTERNAL_ERROR_CORE,
122      TRUE,
123      INTERNAL_ERROR_NO_CPU_TABLE
124    );
125
126  _CPU_Initialize( cpu_table, _Thread_Dispatch );
127
128  /*
129   *  Do this as early as possible to insure no debugging output
130   *  is even attempted to be printed.
131   */
132
133  _Debug_Manager_initialization();
134
135  _API_extensions_Initialization();
136
137  _Thread_Dispatch_initialization();
138
139  _Workspace_Handler_initialization(
140     (void *)configuration_table->work_space_start,
141     configuration_table->work_space_size
142  );
143
144  _User_extensions_Handler_initialization(
145    configuration_table->number_of_initial_extensions,
146    configuration_table->User_extension_table
147  );
148
149  _ISR_Handler_initialization();
150
151  _Objects_Handler_initialization(
152    multiprocessing_table->node,
153    multiprocessing_table->maximum_nodes,
154    multiprocessing_table->maximum_global_objects
155  );
156
157  _Objects_Information_table[OBJECTS_INTERNAL_API] = _Internal_Objects;
158
159  _Priority_Handler_initialization();
160
161  _Watchdog_Handler_initialization();
162
163  _TOD_Handler_initialization( configuration_table->microseconds_per_tick );
164
165  _Thread_Handler_initialization(
166    configuration_table->ticks_per_timeslice,
167    configuration_table->maximum_extensions,
168    multiprocessing_table->maximum_proxies
169  );
170
171#if defined(RTEMS_MULTIPROCESSING)
172  _MPCI_Handler_initialization(
173    multiprocessing_table->User_mpci_table,
174    RTEMS_TIMEOUT
175  );
176#endif
177
178/* MANAGERS */
179
180  _RTEMS_API_Initialize( configuration_table );
181
182  _Extension_Manager_initialization( configuration_table->maximum_extensions );
183
184  _IO_Manager_initialization(
185    configuration_table->Device_driver_table,
186    configuration_table->number_of_device_drivers,
187    configuration_table->maximum_drivers,
188    configuration_table->maximum_devices
189  );
190
191#ifdef RTEMS_POSIX_API
192  _POSIX_API_Initialize( configuration_table );
193#endif
194
195#ifdef RTEMS_ITRON_API
196  _ITRON_API_Initialize( configuration_table );
197#endif
198
199  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );
200
201  /*
202   *  No threads should be created before this point!!!
203   *  _Thread_Executing and _Thread_Heir are not set.
204   *
205   *  At this point all API extensions are in place.  After the call to
206   *  _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
207   */
208
209  _Thread_Create_idle();
210
211  /*
212   *  Scheduling can properly occur now as long as we avoid dispatching.
213   */
214
215  if ( cpu_table->pretasking_hook )
216    (*cpu_table->pretasking_hook)();
217
218#if defined(RTEMS_MULTIPROCESSING)
219  _MPCI_Create_server();
220#endif
221
222  /*
223   *  Run the API and BSPs predriver hook.
224   */
225
226  _API_extensions_Run_predriver();
227
228  if ( _CPU_Table.predriver_hook )
229    (*_CPU_Table.predriver_hook)();
230
231  /*
232   *  Initialize all the device drivers and initialize the MPCI layer.
233   *
234   *  NOTE:  The MPCI may be build upon a device driver.
235   */
236
237  _IO_Initialize_all_drivers();
238
239#if defined(RTEMS_MULTIPROCESSING)
240  if ( _System_state_Is_multiprocessing ) {
241    _MPCI_Initialization();
242    _MPCI_Internal_packets_Send_process_packet(
243      MPCI_PACKETS_SYSTEM_VERIFY
244    );
245  }
246#endif
247
248  /*
249   *  Run the APIs and BSPs postdriver hooks.
250   *
251   *  The API extensions are supposed to create user initialization tasks.
252   */
253
254  _API_extensions_Run_postdriver();
255
256  if ( _CPU_Table.postdriver_hook )
257    (*_CPU_Table.postdriver_hook)();
258
259  return bsp_level;
260}
261
262void rtems_initialize_executive_late(
263  rtems_interrupt_level bsp_level
264)
265{
266
267  _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING );
268
269  _Thread_Start_multitasking();
270
271  /*
272   *  Restore the interrupt level to what the BSP had.  Technically,
273   *  this is unnecessary since the BSP should have all interrupts
274   *  disabled when rtems_initialize_executive is invoked.  But this keeps
275   *  the ISR Disable/Enable calls paired.
276   */
277
278  _ISR_Enable( bsp_level );
279}
280
281/*PAGE
282 *
283 *  rtems_shutdown_executive
284 *
285 *  This kernel routine shutdowns the executive.  It halts multitasking
286 *  and returns control to the application execution "thread" which
287 *  initialially invoked the rtems_initialize_executive directive.
288 *
289 *  Input parameters:   NONE
290 *
291 *  Output parameters:  NONE
292 */
293
294void rtems_shutdown_executive(
295   uint32_t   result
296)
297{
298  if ( _System_state_Current != SYSTEM_STATE_SHUTDOWN ) {
299    _System_state_Set( SYSTEM_STATE_SHUTDOWN );
300    _Thread_Stop_multitasking();
301  }
302}
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