osfmk/vm/vm_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 /*
  29  * Mach Operating System
  30  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  31  * All Rights Reserved.
  32  *
  33  * Permission to use, copy, modify and distribute this software and its
  34  * documentation is hereby granted, provided that both the copyright
  35  * notice and this permission notice appear in all copies of the
  36  * software, derivative works or modified versions, and any portions
  37  * thereof, and that both notices appear in supporting documentation.
  38  *
  39  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  40  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  41  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  42  *
  43  * Carnegie Mellon requests users of this software to return to
  44  *
  45  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  46  *  School of Computer Science
  47  *  Carnegie Mellon University
  48  *  Pittsburgh PA 15213-3890
  49  *
  50  * any improvements or extensions that they make and grant Carnegie Mellon
  51  * the rights to redistribute these changes.
  52  */
  53 /*
  54  */
  55 /*
  56  *      File:   vm/vm_init.c
  57  *      Author: Avadis Tevanian, Jr., Michael Wayne Young
  58  *      Date:   1985
  59  *
  60  *      Initialize the Virtual Memory subsystem.
  61  */
  62
  63 #include <mach/machine/vm_types.h>
  64 #include <kern/zalloc.h>
  65 #include <kern/kalloc.h>
  66 #include <vm/vm_object.h>
  67 #include <vm/vm_map.h>
  68 #include <vm/vm_page.h>
  69 #include <vm/vm_kern.h>
  70 #include <vm/memory_object.h>
  71 #include <vm/vm_fault.h>
  72 #include <vm/vm_init.h>
  73
  74 #define ZONE_MAP_MIN (12 * 1024 * 1024)
  75 #define ZONE_MAP_MAX (256 * 1024 * 1024)
  76
  77 /*
  78  *      vm_mem_bootstrap initializes the virtual memory system.
  79  *      This is done only by the first cpu up.
  80  */
  81
  82 void
  83 vm_mem_bootstrap(void)
  84 {
  85         vm_offset_t     start, end;
  86         vm_size_t zsize;
  87
  88         /*
  89          *      Initializes resident memory structures.
  90          *      From here on, all physical memory is accounted for,
  91          *      and we use only virtual addresses.
  92          */
  93
  94         vm_page_bootstrap(&start, &end);
  95
  96         /*
  97          *      Initialize other VM packages
  98          */
  99
 100         zone_bootstrap();
 101         vm_object_bootstrap();
 102         vm_map_init();
 103         kmem_init(start, end);
 104         pmap_init();
 105
 106         if (PE_parse_boot_arg("zsize", &zsize))
 107                 zsize = zsize * 1024 * 1024;
 108         else {
 109                 zsize = mem_size >> 2;                  /* Get target zone size as 1/4 of physical memory */
 110         }
 111         if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
 112         if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
 113         zone_init(zsize);                                               /* Allocate address space for zones */
 114
 115         kalloc_init();
 116         vm_fault_init();
 117         vm_page_module_init();
 118         memory_manager_default_init();
 119         memory_object_control_bootstrap();
 120         device_pager_bootstrap();
 121 }
 122
 123 void
 124 vm_mem_init(void)
 125 {
 126         vm_object_init();
 127 }