usr/src/sys/vm/vm_init.c

/*
 * Copyright (c) 1991 Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * The Mach Operating System project at Carnegie-Mellon University.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)vm_init.c   7.7 (Berkeley) %G%
 *
 *
 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/*
 *      Initialize the Virtual Memory subsystem.
 */

#include <sys/param.h>

#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_kern.h>

/*
 *      vm_init initializes the virtual memory system.
 *      This is done only by the first cpu up.
 *
 *      The start and end address of physical memory is passed in.
 */

void vm_mem_init()
{
        extern vm_offset_t      avail_start, avail_end;
        extern vm_offset_t      virtual_avail, virtual_end;

        /*
         *      Initializes resident memory structures.
         *      From here on, all physical memory is accounted for,
         *      and we use only virtual addresses.
         */
        vm_set_page_size();
        vm_page_startup(&avail_start, &avail_end);

        /*
         * Initialize other VM packages
         */
        vm_object_init(virtual_end - VM_MIN_KERNEL_ADDRESS);
        vm_map_startup();
        kmem_init(virtual_avail, virtual_end);
        pmap_init(avail_start, avail_end);
        vm_pager_init();
}