source: rtems/cpukit/sapi/src/exinit.c @ 6ca4f6a

4.11
Last change on this file since 6ca4f6a was 6ca4f6a, checked in by Sebastian Huber <sebastian.huber@…>, on Feb 17, 2014 at 1:56:51 PM

score: Add and use <rtems/score/smpimpl.h>

Collect SMP implementation specific parts in the
<rtems/score/smpimpl.h> header file.

  • Property mode set to 100644
File size: 5.7 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/extensionimpl.h>
36#include <rtems/init.h>
37#include <rtems/io.h>
38#include <rtems/score/sysstate.h>
39
40#include <rtems/score/apiext.h>
41#include <rtems/score/apimutex.h>
42#include <rtems/score/copyrt.h>
43#include <rtems/score/heap.h>
44#include <rtems/score/interr.h>
45#include <rtems/score/isr.h>
46#include <rtems/score/priority.h>
47#include <rtems/score/schedulerimpl.h>
48#include <rtems/score/smpimpl.h>
49#include <rtems/score/threadimpl.h>
50#include <rtems/score/todimpl.h>
51#include <rtems/score/userextimpl.h>
52#include <rtems/score/watchdogimpl.h>
53#include <rtems/score/wkspace.h>
54
55#include <rtems/sptables.h>
56
57
58#include <rtems/rtems/rtemsapi.h>
59#ifdef RTEMS_POSIX_API
60  #include <rtems/posix/posixapi.h>
61#endif
62
63Objects_Information *_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
64
65void rtems_initialize_data_structures(void)
66{
67  /*
68   *  Dispatching and interrupts are disabled until the end of the
69   *  initialization sequence.  This prevents an inadvertent context
70   *  switch before the executive is initialized.
71   *
72   *  WARNING: Interrupts should have been disabled by the BSP and
73   *           are disabled by boot_card().
74   */
75
76  #if defined(RTEMS_MULTIPROCESSING)
77    /*
78     *  Initialize the system state based on whether this is an MP system.
79     *  In an MP configuration, internally we view single processor
80     *  systems as a very restricted multiprocessor system.
81     */
82    _Configuration_MP_table = rtems_configuration_get_user_multiprocessing_table();
83
84    if ( _Configuration_MP_table == NULL ) {
85      _Configuration_MP_table =
86        (void *)&_Initialization_Default_multiprocessing_table;
87      _System_state_Handler_initialization( FALSE );
88    } else {
89      _System_state_Handler_initialization( TRUE );
90    }
91  #else
92    _System_state_Handler_initialization( FALSE );
93  #endif
94
95  /*
96   * Initialize any target architecture specific support as early as possible
97   */
98  _CPU_Initialize();
99
100  #if defined(RTEMS_MULTIPROCESSING)
101    _Objects_MP_Handler_early_initialization();
102  #endif
103
104  /*
105   *  Do this as early as possible to ensure no debugging output
106   *  is even attempted to be printed.
107   */
108  _Debug_Manager_initialization();
109
110  _API_extensions_Initialization();
111
112  _Thread_Dispatch_initialization();
113
114  _User_extensions_Handler_initialization();
115  _ISR_Handler_initialization();
116
117  /*
118   * Initialize the internal support API and allocator Mutex
119   */
120  _Objects_Information_table[OBJECTS_INTERNAL_API] = _Internal_Objects;
121
122  _API_Mutex_Initialization( 1 );
123  _API_Mutex_Allocate( &_RTEMS_Allocator_Mutex );
124
125  _Watchdog_Handler_initialization();
126  _TOD_Handler_initialization();
127
128  _Thread_Handler_initialization();
129
130  _Scheduler_Handler_initialization();
131
132  #if defined(RTEMS_MULTIPROCESSING)
133    _Objects_MP_Handler_initialization();
134    _MPCI_Handler_initialization( RTEMS_TIMEOUT );
135  #endif
136
137/* MANAGERS */
138
139  _RTEMS_API_Initialize();
140
141  _Extension_Manager_initialization();
142
143  _IO_Manager_initialization();
144
145  #ifdef RTEMS_POSIX_API
146    _POSIX_API_Initialize();
147  #endif
148
149  _SMP_Handler_initialize();
150
151  _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );
152
153  /*
154   *  No threads should be created before this point!!!
155   *  _Thread_Executing and _Thread_Heir are not set.
156   *
157   *  At this point all API extensions are in place.  After the call to
158   *  _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
159   */
160  _Thread_Create_idle();
161
162  /*
163   *  Scheduling can properly occur now as long as we avoid dispatching.
164   */
165}
166
167void rtems_initialize_before_drivers(void)
168{
169
170  #if defined(RTEMS_MULTIPROCESSING)
171    _MPCI_Create_server();
172  #endif
173
174  #if defined(FUNCTIONALITY_NOT_CURRENTLY_USED_BY_ANY_API)
175    /*
176     *  Run the API and BSPs predriver hook.
177     */
178    _API_extensions_Run_predriver();
179  #endif
180}
181
182void rtems_initialize_device_drivers(void)
183{
184  /*
185   *  Initialize all the device drivers and initialize the MPCI layer.
186   *
187   *  NOTE:  The MPCI may be build upon a device driver.
188   */
189
190  _IO_Initialize_all_drivers();
191
192  #if defined(RTEMS_MULTIPROCESSING)
193    if ( _System_state_Is_multiprocessing ) {
194      _MPCI_Initialization();
195      _MPCI_Internal_packets_Send_process_packet(
196        MPCI_PACKETS_SYSTEM_VERIFY
197      );
198    }
199  #endif
200
201  /*
202   *  Run the APIs and BSPs postdriver hooks.
203   *
204   *  The API extensions are supposed to create user initialization tasks.
205   */
206  _API_extensions_Run_postdriver();
207}
208
209void rtems_initialize_start_multitasking(void)
210{
211  _System_state_Set( SYSTEM_STATE_UP );
212
213  _SMP_Request_other_cores_to_perform_first_context_switch();
214
215  _Thread_Start_multitasking();
216
217  /*******************************************************************
218   *******************************************************************
219   *******************************************************************
220   ******                 APPLICATION RUNS HERE                 ******
221   ******              THE FUNCTION NEVER RETURNS               ******
222   *******************************************************************
223   *******************************************************************
224   *******************************************************************/
225}
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