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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplClassic
*
* @brief This source file contains the definition of ::_Copyright_Notice,
* ::_Objects_Information_table, the flexible per-CPU data linker set limits,
* the system initialization linker set limits and the implementation of
* rtems_initialize_executive().
*/
/*
* COPYRIGHT (c) 1989-2014.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/config.h>
#include <rtems/extensionimpl.h>
#include <rtems/init.h>
#include <rtems/sysinit.h>
#include <rtems/score/sysstate.h>
#include <rtems/score/copyrt.h>
#include <rtems/score/heap.h>
#include <rtems/score/interr.h>
#include <rtems/score/isr.h>
#include <rtems/score/priority.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/smpimpl.h>
#include <rtems/score/timecounter.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/todimpl.h>
RTEMS_SECTION(".rtemsroset.copyright") const char _Copyright_Notice[] =
"Copyright (C) 1989, 2021 RTEMS Project and contributors";
static Objects_Information *
_Internal_Objects[ OBJECTS_INTERNAL_CLASSES_LAST + 1 ];
static Objects_Information *_RTEMS_Objects[ OBJECTS_RTEMS_CLASSES_LAST + 1 ];
static Objects_Information *_POSIX_Objects[ OBJECTS_POSIX_CLASSES_LAST + 1 ];
Objects_Information ** const
_Objects_Information_table[ OBJECTS_APIS_LAST + 1 ] = {
NULL,
&_Internal_Objects[ 0 ],
&_RTEMS_Objects[ 0 ],
&_POSIX_Objects[ 0 ]
};
static void rtems_initialize_data_structures(void)
{
/*
* Dispatching and interrupts are disabled until the end of the
* initialization sequence. This prevents an inadvertent context
* switch before the executive is initialized.
*
* WARNING: Interrupts should have been disabled by the BSP and
* are disabled by boot_card().
*/
/*
* Initialize any target architecture specific support as early as possible
*/
_CPU_Initialize();
_Thread_Dispatch_initialization();
_ISR_Handler_initialization();
_Thread_Handler_initialization();
_Scheduler_Handler_initialization();
_SMP_Handler_initialize();
}
RTEMS_LINKER_ROSET( _Sysinit, rtems_sysinit_item );
RTEMS_SYSINIT_ITEM(
rtems_initialize_data_structures,
RTEMS_SYSINIT_DATA_STRUCTURES,
RTEMS_SYSINIT_ORDER_MIDDLE
);
/*
* No threads should be created before this point!!!
* _Thread_Executing and _Thread_Heir are not set.
*
* At this point all API extensions are in place. After the call to
* _Thread_Create_idle() _Thread_Executing and _Thread_Heir will be set.
*
* Scheduling can properly occur afterwards as long as we avoid dispatching.
*/
RTEMS_SYSINIT_ITEM(
_Thread_Create_idle,
RTEMS_SYSINIT_IDLE_THREADS,
RTEMS_SYSINIT_ORDER_MIDDLE
);
void rtems_initialize_executive(void)
{
const rtems_sysinit_item *item;
/* Invoke the registered system initialization handlers */
RTEMS_LINKER_SET_FOREACH( _Sysinit, item ) {
( *item->handler )();
}
_System_state_Set( SYSTEM_STATE_UP );
_SMP_Request_start_multitasking();
_Thread_Start_multitasking();
/*******************************************************************
*******************************************************************
*******************************************************************
****** APPLICATION RUNS HERE ******
****** THE FUNCTION NEVER RETURNS ******
*******************************************************************
*******************************************************************
*******************************************************************/
}
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