source: rtems/cpukit/sapi/src/exinit.c @ 37cd592

4.104.114.84.9
Last change on this file since 37cd592 was 37cd592, checked in by Joel Sherrill <joel.sherrill@…>, on Jul 4, 2002 at 4:22:54 PM

2002-07-04 Joel Sherrill <joel@…>

  • Jump table for single entry point removed.
  • include/rtems/directives.h, src/entrytable.c: Removed.
  • include/Makefile.am, src/Makefile.am, src/exinit.c: Modified to reflect above.
  • Property mode set to 100644
File size: 7.9 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.OARcorp.com/rtems/license.html.
10 *
11 *  $Id$
12 */
13
14/*
15 *  SCORE_INIT and SAPI_INIT are defined so all of the super core and
16 *  super API data will be included in this object file.
17 */
18
19#define SAPI_INIT
20#define SCORE_INIT
21
22#include <rtems/system.h>
23#include <rtems/config.h>
24#include <rtems/debug.h>
25#include <rtems/extension.h>
26#include <rtems/fatal.h>
27#include <rtems/init.h>
28#include <rtems/io.h>
29#include <rtems/score/sysstate.h>
30
31#include <rtems/score/apiext.h>
32#include <rtems/score/apimutex.h>
33#include <rtems/score/copyrt.h>
34#include <rtems/score/heap.h>
35#include <rtems/score/interr.h>
36#include <rtems/score/isr.h>
37#if defined(RTEMS_MULTIPROCESSING)
38#include <rtems/score/mpci.h>
39#endif
40#include <rtems/score/priority.h>
41#include <rtems/score/thread.h>
42#include <rtems/score/tod.h>
43#include <rtems/score/userext.h>
44#include <rtems/score/watchdog.h>
45#include <rtems/score/wkspace.h>
46
47#include <rtems/sptables.h>
48
49
50#include <rtems/rtems/rtemsapi.h>
51#ifdef RTEMS_POSIX_API
52#include <rtems/posix/posixapi.h>
53#endif
54#ifdef RTEMS_ITRON_API
55#include <rtems/itron/itronapi.h>
56#endif
57
58Objects_Information *_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
59
60/*PAGE
61 *
62 *  rtems_initialize_executive
63 *
64 *  This directive initializes all the kernels data structures
65 *  to the states necessary for the kernel to begin execution.  All
66 *  include files that contain global variable definitions should be
67 *  included in this file.  The system threads and initialization threads
68 *  are created and started by this routine.  This routine then
69 *  initiates multithreading.
70 *
71 *  Input parameters:
72 *    configuration_table - pointer to the user's configuration table
73 *    cpu_table           - pointer to the user's CPU configuration table
74 *
75 *  Output parameters:  NONE
76 */
77
78void rtems_initialize_executive(
79  rtems_configuration_table *configuration_table,
80  rtems_cpu_table           *cpu_table
81)
82{
83  rtems_interrupt_level bsp_level;
84
85  bsp_level = rtems_initialize_executive_early(configuration_table, cpu_table);
86  rtems_initialize_executive_late( bsp_level );
87}
88
89rtems_interrupt_level rtems_initialize_executive_early(
90  rtems_configuration_table *configuration_table,
91  rtems_cpu_table           *cpu_table
92)
93{
94  rtems_interrupt_level        bsp_level;
95  rtems_multiprocessing_table *multiprocessing_table;
96
97  /*
98   *  Dispatching and interrupts are disabled until the end of the
99   *  initialization sequence.  This prevents an inadvertent context
100   *  switch before the executive is initialized.
101   */
102
103  _ISR_Disable( bsp_level );
104
105  if ( configuration_table == NULL )
106    _Internal_error_Occurred(
107      INTERNAL_ERROR_CORE,
108      TRUE,
109      INTERNAL_ERROR_NO_CONFIGURATION_TABLE
110    );
111
112  /*
113   *  Initialize the system state based on whether this is an MP system.
114   */
115
116#if defined(RTEMS_MULTIPROCESSING)
117  multiprocessing_table = configuration_table->User_multiprocessing_table;
118
119  _System_state_Handler_initialization(
120    (multiprocessing_table) ? TRUE : FALSE
121  );
122#else
123  multiprocessing_table = NULL;
124
125  _System_state_Handler_initialization( FALSE );
126#endif
127
128  /*
129   *  Provided just for user convenience.
130   */
131
132  _Configuration_Table    = configuration_table;
133  _Configuration_MP_table = multiprocessing_table;
134
135  /*
136   *  Internally we view single processor systems as a very restricted
137   *  multiprocessor system.
138   */
139
140  if ( multiprocessing_table == NULL )
141    multiprocessing_table = 
142      (void *)&_Initialization_Default_multiprocessing_table;
143
144  if ( cpu_table == NULL )
145    _Internal_error_Occurred(
146      INTERNAL_ERROR_CORE,
147      TRUE,
148      INTERNAL_ERROR_NO_CPU_TABLE
149    );
150
151  _CPU_Initialize( cpu_table, _Thread_Dispatch );
152
153  /*
154   *  Do this as early as possible to insure no debugging output
155   *  is even attempted to be printed.
156   */
157
158  _Debug_Manager_initialization();
159
160  _API_extensions_Initialization();
161
162  _Thread_Dispatch_initialization();
163
164  _Workspace_Handler_initialization(
165     (void *)configuration_table->work_space_start,
166     configuration_table->work_space_size
167  );
168
169  _User_extensions_Handler_initialization(
170    configuration_table->number_of_initial_extensions,
171    configuration_table->User_extension_table
172  );
173
174  _ISR_Handler_initialization();
175
176  _Objects_Handler_initialization(
177    multiprocessing_table->node,
178    multiprocessing_table->maximum_nodes,
179    multiprocessing_table->maximum_global_objects
180  );
181
182  _Objects_Information_table[OBJECTS_INTERNAL_API] = _Internal_Objects;
183
184  _Priority_Handler_initialization();
185
186  _Watchdog_Handler_initialization();
187
188  _TOD_Handler_initialization( configuration_table->microseconds_per_tick );
189
190  _Thread_Handler_initialization(
191    configuration_table->ticks_per_timeslice,
192    configuration_table->maximum_extensions,
193    multiprocessing_table->maximum_proxies
194  );
195
196#if defined(RTEMS_MULTIPROCESSING)
197  _MPCI_Handler_initialization(
198    multiprocessing_table->User_mpci_table,
199    RTEMS_TIMEOUT
200  );
201#endif
202
203/* MANAGERS */
204
205  _RTEMS_API_Initialize( configuration_table );
206
207  _Extension_Manager_initialization( configuration_table->maximum_extensions );
208
209  _IO_Manager_initialization(
210    configuration_table->Device_driver_table,
211    configuration_table->number_of_device_drivers,
212    configuration_table->maximum_drivers,
213    configuration_table->maximum_devices
214  );
215
216#ifdef RTEMS_POSIX_API
217  _POSIX_API_Initialize( configuration_table );
218#endif
219
220#ifdef RTEMS_ITRON_API
221  _ITRON_API_Initialize( configuration_table );
222#endif
223
224  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );
225
226  /*
227   *  No threads should be created before this point!!!
228   *  _Thread_Executing and _Thread_Heir are not set.
229   *
230   *  At this point all API extensions are in place.  After the call to
231   *  _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
232   */
233
234  _Thread_Create_idle();
235
236
237  /*
238   *  Scheduling can properly occur now as long as we avoid dispatching.
239   */
240
241  if ( cpu_table->pretasking_hook )
242    (*cpu_table->pretasking_hook)();
243
244#if defined(RTEMS_MULTIPROCESSING)
245  _MPCI_Create_server();
246#endif
247
248  /*
249   *  Run the API and BSPs predriver hook.
250   */
251 
252  _API_extensions_Run_predriver();
253 
254  if ( _CPU_Table.predriver_hook )
255    (*_CPU_Table.predriver_hook)();
256 
257  /*
258   *  Initialize all the device drivers and initialize the MPCI layer.
259   *
260   *  NOTE:  The MPCI may be build upon a device driver.
261   */
262 
263  _IO_Initialize_all_drivers();
264 
265#if defined(RTEMS_MULTIPROCESSING)
266  if ( _System_state_Is_multiprocessing ) {
267    _MPCI_Initialization();
268    _MPCI_Internal_packets_Send_process_packet(
269      MPCI_PACKETS_SYSTEM_VERIFY
270    );
271  }
272#endif
273 
274  /*
275   *  Run the APIs and BSPs postdriver hooks.
276   *
277   *  The API extensions are supposed to create user initialization tasks.
278   */
279 
280  _API_extensions_Run_postdriver();
281 
282  if ( _CPU_Table.postdriver_hook )
283    (*_CPU_Table.postdriver_hook)();
284
285  return bsp_level;
286}
287
288void rtems_initialize_executive_late(
289  rtems_interrupt_level bsp_level
290)
291{
292
293  _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING );
294
295  _Thread_Start_multitasking();
296
297  /*
298   *  Restore the interrupt level to what the BSP had.  Technically,
299   *  this is unnecessary since the BSP should have all interrupts
300   *  disabled when rtems_initialize_executive is invoked.  But this keeps
301   *  the ISR Disable/Enable calls paired.
302   */
303
304  _ISR_Enable( bsp_level );
305}
306
307/*PAGE
308 *
309 *  rtems_shutdown_executive
310 *
311 *  This kernel routine shutdowns the executive.  It halts multitasking
312 *  and returns control to the application execution "thread" which
313 *  initialially invoked the rtems_initialize_executive directive.
314 *
315 *  Input parameters:   NONE
316 *
317 *  Output parameters:  NONE
318 */
319
320void rtems_shutdown_executive(
321   unsigned32 result
322)
323{
324  if ( _System_state_Current != SYSTEM_STATE_SHUTDOWN ) {
325    _System_state_Set( SYSTEM_STATE_SHUTDOWN );
326    _Thread_Stop_multitasking();
327  }
328}
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