usr/src/sys/vm/vm_init.c

/*
 * Copyright (c) 1985, Avadis Tevanian, Jr., Michael Wayne Young
 * Copyright (c) 1987 Carnegie-Mellon University
 * 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.
 *
 * The CMU software License Agreement specifies the terms and conditions
 * for use and redistribution.
 *
 *      @(#)vm_init.c   7.1 (Berkeley) %G%
 */

/*
 *      Initialize the Virtual Memory subsystem.
 */

#include "types.h"
#include "../vm/vm_param.h"
#include "lock.h"
#include "../vm/vm_object.h"
#include "../vm/vm_map.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.
         */

        virtual_avail = vm_page_startup(avail_start, avail_end, virtual_avail);
        /*
         * Initialize other VM packages
         */
        vm_object_init();
        vm_map_init();
        kmem_init(virtual_avail, virtual_end);
        pmap_init(avail_start, avail_end);
        vm_pager_init();
}