forked from Imagelibrary/rtems
153 lines
4.9 KiB
C
153 lines
4.9 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSImplClassic
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*
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* @brief This source file contains the definition of ::_Copyright_Notice,
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* ::_Objects_Information_table, the flexible per-CPU data linker set limits,
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* the system initialization linker set limits and the implementation of
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* rtems_initialize_executive().
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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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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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/sysinit.h>
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#include <rtems/score/sysstate.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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RTEMS_SECTION(".rtemsroset.copyright") const char _Copyright_Notice[] =
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"Copyright (C) 1989, 2021 RTEMS Project and contributors";
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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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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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_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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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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