osfmk/vm/vm_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * Mach Operating System
  28  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  29  * All Rights Reserved.
  30  *
  31  * Permission to use, copy, modify and distribute this software and its
  32  * documentation is hereby granted, provided that both the copyright
  33  * notice and this permission notice appear in all copies of the
  34  * software, derivative works or modified versions, and any portions
  35  * thereof, and that both notices appear in supporting documentation.
  36  *
  37  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  38  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  39  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  40  *
  41  * Carnegie Mellon requests users of this software to return to
  42  *
  43  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  44  *  School of Computer Science
  45  *  Carnegie Mellon University
  46  *  Pittsburgh PA 15213-3890
  47  *
  48  * any improvements or extensions that they make and grant Carnegie Mellon
  49  * the rights to redistribute these changes.
  50  */
  51 /*
  52  */
  53 /*
  54  *      File:   vm/vm_init.c
  55  *      Author: Avadis Tevanian, Jr., Michael Wayne Young
  56  *      Date:   1985
  57  *
  58  *      Initialize the Virtual Memory subsystem.
  59  */
  60
  61 #include <mach/machine/vm_types.h>
  62 #include <kern/zalloc.h>
  63 #include <kern/kalloc.h>
  64 #include <vm/vm_object.h>
  65 #include <vm/vm_map.h>
  66 #include <vm/vm_page.h>
  67 #include <vm/vm_kern.h>
  68 #include <vm/memory_object.h>
  69 #include <vm/vm_fault.h>
  70 #include <vm/vm_init.h>
  71
  72 #include <pexpert/pexpert.h>
  73
  74 #include <vm/vm_protos.h>
  75
  76 #define ZONE_MAP_MIN (12 * 1024 * 1024)
  77 #define ZONE_MAP_MAX (768 * 1024 * 1024)
  78
  79 /*
  80  *      vm_mem_bootstrap initializes the virtual memory system.
  81  *      This is done only by the first cpu up.
  82  */
  83
  84 void
  85 vm_mem_bootstrap(void)
  86 {
  87         vm_offset_t     start, end;
  88         vm_size_t zsize;
  89
  90         /*
  91          *      Initializes resident memory structures.
  92          *      From here on, all physical memory is accounted for,
  93          *      and we use only virtual addresses.
  94          */
  95
  96         vm_page_bootstrap(&start, &end);
  97
  98         /*
  99          *      Initialize other VM packages
 100          */
 101
 102         zone_bootstrap();
 103         vm_object_bootstrap();
 104         vm_map_init();
 105         kmem_init(start, end);
 106         pmap_init();
 107
 108         if (PE_parse_boot_arg("zsize", &zsize))
 109                 zsize = zsize * 1024 * 1024;
 110         else {
 111                 zsize = sane_size >> 2;                         /* Get target zone size as 1/4 of physical memory */
 112         }
 113
 114         if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
 115         if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
 116         zone_init(zsize);                                               /* Allocate address space for zones */
 117
 118         kalloc_init();
 119         vm_fault_init();
 120         vm_page_module_init();
 121         memory_manager_default_init();
 122         memory_object_control_bootstrap();
 123         device_pager_bootstrap();
 124 }
 125
 126 void
 127 vm_mem_init(void)
 128 {
 129         vm_object_init();
 130 }