osfmk/vm/vm_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  23  * Please see the License for the specific language governing rights and
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  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      File:   vm/vm_init.c
  60  *      Author: Avadis Tevanian, Jr., Michael Wayne Young
  61  *      Date:   1985
  62  *
  63  *      Initialize the Virtual Memory subsystem.
  64  */
  65
  66 #include <mach/machine/vm_types.h>
  67 #include <kern/zalloc.h>
  68 #include <kern/kalloc.h>
  69 #include <vm/vm_object.h>
  70 #include <vm/vm_map.h>
  71 #include <vm/vm_page.h>
  72 #include <vm/vm_kern.h>
  73 #include <vm/memory_object.h>
  74 #include <vm/vm_fault.h>
  75 #include <vm/vm_init.h>
  76
  77 #include <pexpert/pexpert.h>
  78
  79 #include <vm/vm_protos.h>
  80
  81 #define ZONE_MAP_MIN (12 * 1024 * 1024)
  82 #define ZONE_MAP_MAX (768 * 1024 * 1024)
  83
  84 /*
  85  *      vm_mem_bootstrap initializes the virtual memory system.
  86  *      This is done only by the first cpu up.
  87  */
  88
  89 void
  90 vm_mem_bootstrap(void)
  91 {
  92         vm_offset_t     start, end;
  93         vm_size_t zsize;
  94
  95         /*
  96          *      Initializes resident memory structures.
  97          *      From here on, all physical memory is accounted for,
  98          *      and we use only virtual addresses.
  99          */
 100
 101         vm_page_bootstrap(&start, &end);
 102
 103         /*
 104          *      Initialize other VM packages
 105          */
 106
 107         zone_bootstrap();
 108         vm_object_bootstrap();
 109         vm_map_init();
 110         kmem_init(start, end);
 111         pmap_init();
 112
 113         if (PE_parse_boot_arg("zsize", &zsize))
 114                 zsize = zsize * 1024 * 1024;
 115         else {
 116                 zsize = sane_size >> 2;                         /* Get target zone size as 1/4 of physical memory */
 117         }
 118
 119         if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
 120         if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
 121         zone_init(zsize);                                               /* Allocate address space for zones */
 122
 123         kalloc_init();
 124         vm_fault_init();
 125         vm_page_module_init();
 126         memory_manager_default_init();
 127         memory_object_control_bootstrap();
 128         device_pager_bootstrap();
 129 }
 130
 131 void
 132 vm_mem_init(void)
 133 {
 134         vm_object_init();
 135 }