/**************************************************************************** * sched/init/init.h * * Copyright (C) 2007-2014, 2016 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * 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. * ****************************************************************************/ #ifndef __SCHED_INIT_INIT_H #define __SCHED_INIT_INIT_H /**************************************************************************** * Included Files ****************************************************************************/ #include /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /**************************************************************************** * Name: os_start * * Description: * This function is called to initialize the operating system and to spawn * the user initialization thread of execution. This is the initial entry * point into NuttX * * Input Parameters: * None * * Returned Value: * Does not return. * ****************************************************************************/ void os_start(void); /**************************************************************************** * Name: os_smp_start * * Description: * In an SMP configution, only one CPU is initially active (CPU 0). System * initialization occurs on that single thread. At the completion of the * initialization of the OS, just before beginning normal multitasking, * the additional CPUs would be started by calling this function. * * Input Parameters: * None * * Returned Value: * Zero on success; a negater errno value on failure. * ****************************************************************************/ #ifdef CONFIG_SMP int os_smp_start(void); #endif /**************************************************************************** * Name: os_idle_trampoline * * Description: * This is the common IDLE task for CPUs 1 through (CONFIG_SMP_NCPUS-1). * It is equivalent to the CPU 0 IDLE logic in os_start.c * * Input Parameters: * Standard task arguments. * * Returned Value: * This function does not return. * ****************************************************************************/ #ifdef CONFIG_SMP void os_idle_trampoline(void); #endif /**************************************************************************** * Name: os_idle_task * * Description: * This is the common IDLE task for CPUs 1 through (CONFIG_SMP_NCPUS-1). * It is equivalent to the CPU 0 IDLE logic in os_start.c * * Input Parameters: * Standard task arguments. * * Returned Value: * This function does not return. * ****************************************************************************/ #ifdef CONFIG_SMP int os_idle_task(int argc, FAR char *argv[]); #endif /**************************************************************************** * Name: os_bringup * * Description: * Start all initial system tasks. This does the "system bring-up" after * the conclusion of basic OS initialization. These initial system tasks * may include: * * - pg_worker: The page-fault worker thread (only if CONFIG_PAGING is * defined. * - work_thread: The work thread. This general thread can be used to * perform most any kind of queued work. Its primary * function is to serve as the "bottom half" of device * drivers. * * And the main application entry point: * symbols: * * - USER_ENTRYPOINT: This is the default user application entry point. * * Input Parameters: * None * * Returned Value: * None * ****************************************************************************/ int os_bringup(void); #endif /* __SCHED_INIT_INIT_H */