vm_init.c revision 3449 
1
2/*
3 * Copyright (c) 1991, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * The Mach Operating System project at Carnegie-Mellon University.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed by the University of
20 *	California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *	from: @(#)vm_init.c	8.1 (Berkeley) 6/11/93
38 *
39 *
40 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
41 * All rights reserved.
42 *
43 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
44 *
45 * Permission to use, copy, modify and distribute this software and
46 * its documentation is hereby granted, provided that both the copyright
47 * notice and this permission notice appear in all copies of the
48 * software, derivative works or modified versions, and any portions
49 * thereof, and that both notices appear in supporting documentation.
50 *
51 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
52 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
53 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
54 *
55 * Carnegie Mellon requests users of this software to return to
56 *
57 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
58 *  School of Computer Science
59 *  Carnegie Mellon University
60 *  Pittsburgh PA 15213-3890
61 *
62 * any improvements or extensions that they make and grant Carnegie the
63 * rights to redistribute these changes.
64 *
65 * $Id: vm_init.c,v 1.3 1994/08/02 07:55:21 davidg Exp $
66 */
67
68/*
69 *	Initialize the Virtual Memory subsystem.
70 */
71
72#include <sys/param.h>
73#include <sys/systm.h>
74
75#include <vm/vm.h>
76#include <vm/vm_page.h>
77#include <vm/vm_kern.h>
78
79/*
80 *	vm_init initializes the virtual memory system.
81 *	This is done only by the first cpu up.
82 *
83 *	The start and end address of physical memory is passed in.
84 */
85
86void
87vm_mem_init()
88{
89	extern vm_offset_t	avail_start, avail_end;
90	extern vm_offset_t	virtual_avail, virtual_end;
91
92	/*
93	 *	Initializes resident memory structures.
94	 *	From here on, all physical memory is accounted for,
95	 *	and we use only virtual addresses.
96	 */
97
98	vm_set_page_size();
99	virtual_avail = vm_page_startup(avail_start, avail_end, virtual_avail);
100	/*
101	 * Initialize other VM packages
102	 */
103	vm_object_init(virtual_end - VM_MIN_KERNEL_ADDRESS);
104	vm_map_startup();
105	kmem_init(virtual_avail, virtual_end);
106	pmap_init(avail_start, avail_end);
107	vm_pager_init();
108}
109