osfmk/vm/vm_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * Mach Operating System
  35  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  36  * All Rights Reserved.
  37  *
  38  * Permission to use, copy, modify and distribute this software and its
  39  * documentation is hereby granted, provided that both the copyright
  40  * notice and this permission notice appear in all copies of the
  41  * software, derivative works or modified versions, and any portions
  42  * thereof, and that both notices appear in supporting documentation.
  43  *
  44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  46  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  47  *
  48  * Carnegie Mellon requests users of this software to return to
  49  *
  50  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  51  *  School of Computer Science
  52  *  Carnegie Mellon University
  53  *  Pittsburgh PA 15213-3890
  54  *
  55  * any improvements or extensions that they make and grant Carnegie Mellon
  56  * the rights to redistribute these changes.
  57  */
  58 /*
  59  */
  60 /*
  61  *      File:   vm/vm_init.c
  62  *      Author: Avadis Tevanian, Jr., Michael Wayne Young
  63  *      Date:   1985
  64  *
  65  *      Initialize the Virtual Memory subsystem.
  66  */
  67
  68 #include <mach/machine/vm_types.h>
  69 #include <kern/zalloc.h>
  70 #include <kern/kalloc.h>
  71 #include <vm/vm_object.h>
  72 #include <vm/vm_map.h>
  73 #include <vm/vm_page.h>
  74 #include <vm/vm_kern.h>
  75 #include <vm/memory_object.h>
  76 #include <vm/vm_fault.h>
  77 #include <vm/vm_init.h>
  78
  79 #include <pexpert/pexpert.h>
  80
  81 #include <vm/vm_protos.h>
  82
  83 #define ZONE_MAP_MIN (12 * 1024 * 1024)
  84 /* Maximum Zone size is 1G */
  85 #define ZONE_MAP_MAX (1024 * 1024 * 1024)
  86
  87 const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_ADDRESS;
  88 const vm_offset_t vm_max_kernel_address = VM_MAX_KERNEL_ADDRESS;
  89
  90 /*
  91  *      vm_mem_bootstrap initializes the virtual memory system.
  92  *      This is done only by the first cpu up.
  93  */
  94
  95 void
  96 vm_mem_bootstrap(void)
  97 {
  98         vm_offset_t     start, end;
  99         vm_size_t zsizearg;
 100         mach_vm_size_t zsize;
 101
 102         /*
 103          *      Initializes resident memory structures.
 104          *      From here on, all physical memory is accounted for,
 105          *      and we use only virtual addresses.
 106          */
 107
 108         vm_page_bootstrap(&start, &end);
 109
 110         /*
 111          *      Initialize other VM packages
 112          */
 113
 114         zone_bootstrap();
 115         vm_object_bootstrap();
 116         vm_map_init();
 117         kmem_init(start, end);
 118         pmap_init();
 119
 120         if (PE_parse_boot_arg("zsize", &zsizearg))
 121                 zsize = zsizearg * 1024ULL * 1024ULL;
 122         else {
 123                 zsize = sane_size >> 2;                         /* Get target zone size as 1/4 of physical memory */
 124         }
 125
 126         if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
 127         if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
 128         zone_init(zsize);                                               /* Allocate address space for zones */
 129
 130         kalloc_init();
 131         vm_fault_init();
 132         vm_page_module_init();
 133         memory_manager_default_init();
 134         memory_object_control_bootstrap();
 135         device_pager_bootstrap();
 136 }
 137
 138 void
 139 vm_mem_init(void)
 140 {
 141         vm_object_init();
 142 }