source: rtems/cpukit/sapi/src/exinit.c @ 70669f28

4.104.114.84.9
Last change on this file since 70669f28 was 70669f28, checked in by Joel Sherrill <joel.sherrill@…>, on May 11, 2007 at 8:07:47 PM

2007-05-11 Joel Sherrill <joel.sherrill@…>

  • rtems/src/region.c, sapi/src/exinit.c: Now that the Region is an optional manager, we cannot depend on it do initialize the internal Allocator Mutex. This was always a questionable place to do it, so this is a cleanup.
  • Property mode set to 100644
File size: 6.7 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#if defined(RTEMS_MULTIPROCESSING)
109  _Configuration_MP_table = multiprocessing_table;
110#endif
111
112  /*
113   *  Internally we view single processor systems as a very restricted
114   *  multiprocessor system.
115   */
116
117  if ( multiprocessing_table == NULL )
118    multiprocessing_table =
119      (void *)&_Initialization_Default_multiprocessing_table;
120
121  if ( cpu_table == NULL )
122    _Internal_error_Occurred(
123      INTERNAL_ERROR_CORE,
124      TRUE,
125      INTERNAL_ERROR_NO_CPU_TABLE
126    );
127
128  _CPU_Initialize( cpu_table, _Thread_Dispatch );
129
130  /*
131   *  Do this as early as possible to insure no debugging output
132   *  is even attempted to be printed.
133   */
134
135  _Debug_Manager_initialization();
136
137  _API_extensions_Initialization();
138
139  _Thread_Dispatch_initialization();
140
141  _Workspace_Handler_initialization(
142     (void *)configuration_table->work_space_start,
143     configuration_table->work_space_size
144  );
145
146  _User_extensions_Handler_initialization(
147    configuration_table->number_of_initial_extensions,
148    configuration_table->User_extension_table
149  );
150
151  _ISR_Handler_initialization();
152
153  _Objects_Handler_initialization(
154    multiprocessing_table->node,
155    multiprocessing_table->maximum_nodes,
156    multiprocessing_table->maximum_global_objects
157  );
158
159  _Objects_Information_table[OBJECTS_INTERNAL_API] = _Internal_Objects;
160
161  /*
162   * Initialize the internal allocator Mutex
163   */
164  _API_Mutex_Initialization( 1 );
165  _API_Mutex_Allocate( _RTEMS_Allocator_Mutex );
166
167  _Priority_Handler_initialization();
168
169  _Watchdog_Handler_initialization();
170
171  _TOD_Handler_initialization( configuration_table->microseconds_per_tick );
172
173  _Thread_Handler_initialization(
174    configuration_table->ticks_per_timeslice,
175    configuration_table->maximum_extensions,
176    multiprocessing_table->maximum_proxies
177  );
178
179#if defined(RTEMS_MULTIPROCESSING)
180  _MPCI_Handler_initialization(
181    multiprocessing_table->User_mpci_table,
182    RTEMS_TIMEOUT
183  );
184#endif
185
186/* MANAGERS */
187
188  _RTEMS_API_Initialize( configuration_table );
189
190  _Extension_Manager_initialization( configuration_table->maximum_extensions );
191
192  _IO_Manager_initialization(
193    configuration_table->Device_driver_table,
194    configuration_table->number_of_device_drivers,
195    configuration_table->maximum_drivers,
196    configuration_table->maximum_devices
197  );
198
199#ifdef RTEMS_POSIX_API
200  _POSIX_API_Initialize( configuration_table );
201#endif
202
203#ifdef RTEMS_ITRON_API
204  _ITRON_API_Initialize( configuration_table );
205#endif
206
207  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );
208
209  /*
210   *  No threads should be created before this point!!!
211   *  _Thread_Executing and _Thread_Heir are not set.
212   *
213   *  At this point all API extensions are in place.  After the call to
214   *  _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
215   */
216
217  _Thread_Create_idle();
218
219  /*
220   *  Scheduling can properly occur now as long as we avoid dispatching.
221   */
222
223  if ( cpu_table->pretasking_hook )
224    (*cpu_table->pretasking_hook)();
225
226#if defined(RTEMS_MULTIPROCESSING)
227  _MPCI_Create_server();
228#endif
229
230  /*
231   *  Run the API and BSPs predriver hook.
232   */
233
234  _API_extensions_Run_predriver();
235
236  if ( _CPU_Table.predriver_hook )
237    (*_CPU_Table.predriver_hook)();
238
239  /*
240   *  Initialize all the device drivers and initialize the MPCI layer.
241   *
242   *  NOTE:  The MPCI may be build upon a device driver.
243   */
244
245  _IO_Initialize_all_drivers();
246
247#if defined(RTEMS_MULTIPROCESSING)
248  if ( _System_state_Is_multiprocessing ) {
249    _MPCI_Initialization();
250    _MPCI_Internal_packets_Send_process_packet(
251      MPCI_PACKETS_SYSTEM_VERIFY
252    );
253  }
254#endif
255
256  /*
257   *  Run the APIs and BSPs postdriver hooks.
258   *
259   *  The API extensions are supposed to create user initialization tasks.
260   */
261
262  _API_extensions_Run_postdriver();
263
264  if ( _CPU_Table.postdriver_hook )
265    (*_CPU_Table.postdriver_hook)();
266
267  return bsp_level;
268}
269
270void rtems_initialize_executive_late(
271  rtems_interrupt_level bsp_level
272)
273{
274
275  _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING );
276
277  _Thread_Start_multitasking();
278
279  /*
280   *  Restore the interrupt level to what the BSP had.  Technically,
281   *  this is unnecessary since the BSP should have all interrupts
282   *  disabled when rtems_initialize_executive is invoked.  But this keeps
283   *  the ISR Disable/Enable calls paired.
284   */
285
286  _ISR_Enable( bsp_level );
287}
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