mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-09-02 10:16:51 +08:00
Sebastian Huber
4b579c5f51
Resurrect RTEMS_LINKER_SET_BEGIN() and RTEMS_LINKER_SET_END(). Add new macros RTEMS_LINKER_SET_ITEM_COUNT(), RTEMS_LINKER_SET_IS_EMPTY(), and RTEMS_LINKER_SET_FOREACH(). Remove confusing RTEMS_LINKER_SET_ASSIGN_BEGIN() and RTEMS_LINKER_SET_ASSIGN_END(). Fix RTEMS_LINKER_SET_SIZE() to return the size in characters as specified by the documentation. Update #2408. Update #2790.
156 lines
4.1 KiB
C
156 lines
4.1 KiB
C
/**
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* @file
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*
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* @brief Initialization Manager
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*
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* @ingroup ClassicRTEMS
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*/
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/*
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* COPYRIGHT (c) 1989-2014.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/system.h>
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#include <rtems/config.h>
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#include <rtems/extensionimpl.h>
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#include <rtems/init.h>
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#include <rtems/ioimpl.h>
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#include <rtems/sysinit.h>
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#include <rtems/score/sysstate.h>
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#include <rtems/score/apimutex.h>
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#include <rtems/score/copyrt.h>
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#include <rtems/score/heap.h>
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#include <rtems/score/interr.h>
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#include <rtems/score/isr.h>
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#include <rtems/score/priority.h>
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#include <rtems/score/schedulerimpl.h>
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#include <rtems/score/smpimpl.h>
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#include <rtems/score/timecounter.h>
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#include <rtems/score/threadimpl.h>
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#include <rtems/score/todimpl.h>
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#include <rtems/score/wkspace.h>
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const char _Copyright_Notice[] =
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"COPYRIGHT (c) 1989-2008.\n\
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On-Line Applications Research Corporation (OAR).\n";
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static Objects_Information *
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_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
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static Objects_Information *_RTEMS_Objects[ OBJECTS_RTEMS_CLASSES_LAST + 1 ];
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static Objects_Information *_POSIX_Objects[ OBJECTS_POSIX_CLASSES_LAST + 1 ];
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Objects_Information ** const
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_Objects_Information_table[ OBJECTS_APIS_LAST + 1 ] = {
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NULL,
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&_Internal_Objects[ 0 ],
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&_RTEMS_Objects[ 0 ],
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&_POSIX_Objects[ 0 ]
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};
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API_Mutex_Control *_RTEMS_Allocator_Mutex;
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API_Mutex_Control *_Once_Mutex;
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static void rtems_initialize_data_structures(void)
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{
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/*
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* Dispatching and interrupts are disabled until the end of the
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* initialization sequence. This prevents an inadvertent context
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* switch before the executive is initialized.
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*
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* WARNING: Interrupts should have been disabled by the BSP and
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* are disabled by boot_card().
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*/
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/*
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* Initialize any target architecture specific support as early as possible
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*/
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_CPU_Initialize();
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_Thread_Dispatch_initialization();
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_ISR_Handler_initialization();
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_API_Mutex_Initialization( 2 );
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_API_Mutex_Allocate( &_RTEMS_Allocator_Mutex );
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_API_Mutex_Allocate( &_Once_Mutex );
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_Thread_Handler_initialization();
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_Scheduler_Handler_initialization();
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_SMP_Handler_initialize();
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}
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RTEMS_LINKER_ROSET( _Sysinit, rtems_sysinit_item );
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RTEMS_SYSINIT_ITEM(
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rtems_initialize_data_structures,
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RTEMS_SYSINIT_DATA_STRUCTURES,
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RTEMS_SYSINIT_ORDER_MIDDLE
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);
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/*
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* No threads should be created before this point!!!
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* _Thread_Executing and _Thread_Heir are not set.
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*
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* At this point all API extensions are in place. After the call to
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* _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
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*
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* Scheduling can properly occur afterwards as long as we avoid dispatching.
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*/
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RTEMS_SYSINIT_ITEM(
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_Thread_Create_idle,
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RTEMS_SYSINIT_IDLE_THREADS,
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RTEMS_SYSINIT_ORDER_MIDDLE
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);
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/* Initialize I/O drivers.
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*
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* Driver Manager note:
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* All drivers may not be registered yet. Drivers will dynamically
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* be initialized when registered in level 2,3 and 4.
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*/
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RTEMS_SYSINIT_ITEM(
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_IO_Initialize_all_drivers,
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RTEMS_SYSINIT_DEVICE_DRIVERS,
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RTEMS_SYSINIT_ORDER_MIDDLE
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);
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void rtems_initialize_executive(void)
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{
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const rtems_sysinit_item *item;
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/* Invoke the registered system initialization handlers */
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RTEMS_LINKER_SET_FOREACH( _Sysinit, item ) {
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( *item->handler )();
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}
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_System_state_Set( SYSTEM_STATE_UP );
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_SMP_Request_start_multitasking();
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_Thread_Start_multitasking();
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/*******************************************************************
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*******************************************************************
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*******************************************************************
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****** APPLICATION RUNS HERE ******
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****** THE FUNCTION NEVER RETURNS ******
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*******************************************************************
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*******************************************************************
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*******************************************************************/
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}
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