/*-
 * Copyright (c) 2005-2007, Kohsuke Ohtani
 * All rights reserved.
 *
 * 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 of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 */

/*
 * main.c - kernel main routine
 */

#include <kernel.h>
#include <task.h>
#include <thread.h>
#include <timer.h>
#include <page.h>
#include <kmem.h>
#include <vm.h>
#include <sched.h>
#include <exception.h>
#include <irq.h>
#include <ipc.h>
#include <device.h>
#include <sync.h>
#include <version.h>

/*
 * Initialization code.
 * This is called from kernel_start() routine that
 * is implemented in the architecture dependent layer.
 * We assumes that the following machine state are
 * already set before this routine.
 *	- Kernel BSS section is filled with 0.
 *	- Kernel stack is configured.
 *	- All interrupts are disabled.
 *	- Minimum page table is set. (MMU only)
 */
void
kernel_main(void)
{

	/*
	 * Do machine-dependent
	 * initialization.
	 */
	diag_init();
	printk(BANNAR);
	sched_lock();
	machine_init();

	/*
	 * Initialize memory managers.
	 */
	page_init();
	mmu_init();
	kmem_init();
	vm_init();

	/*
	 * Initialize kernel core.
	 */
	task_init();
	thread_init();
	sched_init();
	exception_init();
	timer_init();

	/*
	 * Initialize IPC related stuff.
	 */
	object_init();
	msg_init();

	/*
	 * Enable interrupt and
	 * initialize devices.
	 */
	irq_init();
	clock_init();
	device_init();

	/*
	 * Set up boot tasks and
	 * start scheduler.
	 */
	task_bootstrap();
	sched_unlock();

	/*
	 * Enter idle loop.
	 */
	thread_idle();
	/* NOTREACHED */
}