source: rtems/cpukit/sapi/src/exinit.c @ 6c2eedc

4.11
Last change on this file since 6c2eedc was 6c2eedc, checked in by Sebastian Huber <sebastian.huber@…>, on May 13, 2013 at 11:37:06 AM

smp: Add maximum_processors field to config

Delete rtems_configuration_get_smp_maximum_processors(). Delete
rtems_configuration_smp_maximum_processors variable. Add
maximum_processors field to rtems_configuration_table if RTEMS_SMP is
defined. Add rtems_configuration_get_maximum_processors().

  • Property mode set to 100644
File size: 6.2 KB
Line 
1/**
2 * @file
3 *
4 * @brief Device Driver Initialization Functions
5 *
6 * @ingroup ClassicRTEMS
7 */
8
9/*
10 *  Initialization Manager
11 *
12 *  COPYRIGHT (c) 1989-2011.
13 *  On-Line Applications Research Corporation (OAR).
14 *
15 *  The license and distribution terms for this file may be
16 *  found in the file LICENSE in this distribution or at
17 *  http://www.rtems.com/license/LICENSE.
18 */
19
20#if HAVE_CONFIG_H
21#include "config.h"
22#endif
23
24/*
25 *  SCORE_INIT and SAPI_INIT are defined so all of the super core and
26 *  super API data will be included in this object file.
27 */
28
29#define SAPI_INIT
30#define SCORE_INIT
31
32#include <rtems/system.h>
33#include <rtems/config.h>
34#include <rtems/debug.h>
35#include <rtems/extension.h>
36#include <rtems/fatal.h>
37#include <rtems/init.h>
38#include <rtems/io.h>
39#include <rtems/score/sysstate.h>
40
41#include <rtems/score/apiext.h>
42#include <rtems/score/apimutex.h>
43#include <rtems/score/copyrt.h>
44#include <rtems/score/heap.h>
45#include <rtems/score/interr.h>
46#include <rtems/score/isr.h>
47#if defined(RTEMS_MULTIPROCESSING)
48#include <rtems/score/mpci.h>
49#endif
50#include <rtems/score/priority.h>
51#include <rtems/score/scheduler.h>
52#include <rtems/score/thread.h>
53#include <rtems/score/tod.h>
54#include <rtems/score/userextimpl.h>
55#include <rtems/score/watchdog.h>
56#include <rtems/score/wkspace.h>
57
58#include <rtems/sptables.h>
59
60
61#include <rtems/rtems/rtemsapi.h>
62#ifdef RTEMS_POSIX_API
63  #include <rtems/posix/posixapi.h>
64#endif
65
66#if defined(RTEMS_SMP)
67  #include <rtems/score/smp.h>
68  #include <rtems/score/percpu.h>
69#endif
70
71Objects_Information *_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
72
73void rtems_initialize_data_structures(void)
74{
75  /*
76   *  Dispatching and interrupts are disabled until the end of the
77   *  initialization sequence.  This prevents an inadvertent context
78   *  switch before the executive is initialized.
79   *
80   *  WARNING: Interrupts should have been disabled by the BSP and
81   *           are disabled by boot_card().
82   */
83
84  #if defined(RTEMS_MULTIPROCESSING)
85    /*
86     *  Initialize the system state based on whether this is an MP system.
87     *  In an MP configuration, internally we view single processor
88     *  systems as a very restricted multiprocessor system.
89     */
90    _Configuration_MP_table = rtems_configuration_get_user_multiprocessing_table();
91
92    if ( _Configuration_MP_table == NULL ) {
93      _Configuration_MP_table =
94        (void *)&_Initialization_Default_multiprocessing_table;
95      _System_state_Handler_initialization( FALSE );
96    } else {
97      _System_state_Handler_initialization( TRUE );
98    }
99  #else
100    _System_state_Handler_initialization( FALSE );
101  #endif
102
103  /*
104   * Initialize any target architecture specific support as early as possible
105   */
106  _CPU_Initialize();
107
108  #if defined(RTEMS_MULTIPROCESSING)
109    _Objects_MP_Handler_early_initialization();
110  #endif
111
112  /*
113   *  Do this as early as possible to ensure no debugging output
114   *  is even attempted to be printed.
115   */
116  _Debug_Manager_initialization();
117
118  _API_extensions_Initialization();
119
120  _Thread_Dispatch_initialization();
121
122  #if defined(RTEMS_SMP)
123    _SMP_Handler_initialize();
124  #endif
125
126  _User_extensions_Handler_initialization();
127  _ISR_Handler_initialization();
128
129  /*
130   * Initialize the internal support API and allocator Mutex
131   */
132  _Objects_Information_table[OBJECTS_INTERNAL_API] = _Internal_Objects;
133
134  _API_Mutex_Initialization( 1 );
135  _API_Mutex_Allocate( &_RTEMS_Allocator_Mutex );
136
137  _Priority_bit_map_Handler_initialization();
138  _Watchdog_Handler_initialization();
139  _TOD_Handler_initialization();
140
141  _Thread_Handler_initialization();
142
143  _Scheduler_Handler_initialization();
144
145  #if defined(RTEMS_MULTIPROCESSING)
146    _Objects_MP_Handler_initialization();
147    _MPCI_Handler_initialization( RTEMS_TIMEOUT );
148  #endif
149
150/* MANAGERS */
151
152  _RTEMS_API_Initialize();
153
154  _Extension_Manager_initialization();
155
156  _IO_Manager_initialization();
157
158  #ifdef RTEMS_POSIX_API
159    _POSIX_API_Initialize();
160  #endif
161
162  /*
163   * Discover and initialize the secondary cores in an SMP system.
164   */
165  #if defined(RTEMS_SMP)
166    _SMP_Processor_count =
167        bsp_smp_initialize( rtems_configuration_get_maximum_processors() );
168  #endif
169
170  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );
171
172  /*
173   *  No threads should be created before this point!!!
174   *  _Thread_Executing and _Thread_Heir are not set.
175   *
176   *  At this point all API extensions are in place.  After the call to
177   *  _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
178   */
179  _Thread_Create_idle();
180
181  /*
182   *  Scheduling can properly occur now as long as we avoid dispatching.
183   */
184}
185
186void rtems_initialize_before_drivers(void)
187{
188
189  #if defined(RTEMS_MULTIPROCESSING)
190    _MPCI_Create_server();
191  #endif
192
193  #if defined(FUNCTIONALITY_NOT_CURRENTLY_USED_BY_ANY_API)
194    /*
195     *  Run the API and BSPs predriver hook.
196     */
197    _API_extensions_Run_predriver();
198  #endif
199}
200
201void rtems_initialize_device_drivers(void)
202{
203  /*
204   *  Initialize all the device drivers and initialize the MPCI layer.
205   *
206   *  NOTE:  The MPCI may be build upon a device driver.
207   */
208
209  _IO_Initialize_all_drivers();
210
211  #if defined(RTEMS_MULTIPROCESSING)
212    if ( _System_state_Is_multiprocessing ) {
213      _MPCI_Initialization();
214      _MPCI_Internal_packets_Send_process_packet(
215        MPCI_PACKETS_SYSTEM_VERIFY
216      );
217    }
218  #endif
219
220  /*
221   *  Run the APIs and BSPs postdriver hooks.
222   *
223   *  The API extensions are supposed to create user initialization tasks.
224   */
225  _API_extensions_Run_postdriver();
226}
227
228void rtems_initialize_start_multitasking(void)
229{
230  uint32_t status;
231
232  _System_state_Set( SYSTEM_STATE_BEGIN_MULTITASKING );
233
234  _Thread_Start_multitasking();
235
236  /*******************************************************************
237   *******************************************************************
238   *******************************************************************
239   ******                 APPLICATION RUNS HERE                 ******
240   ******            RETURNS WHEN SYSTEM IS SHUT DOWN           ******
241   *******************************************************************
242   *******************************************************************
243   *******************************************************************/
244 
245  status = _Per_CPU_Information[0].idle->Wait.return_code;
246  rtems_fatal( RTEMS_FATAL_SOURCE_EXIT, status );
247}
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