osfmk/vm/vm_init.c

   1 /*
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  28 /*
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  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 <kern/kext_alloc.h>
  70 #include <vm/vm_object.h>
  71 #include <vm/vm_map.h>
  72 #include <vm/vm_page.h>
  73 #include <vm/vm_kern.h>
  74 #include <vm/memory_object.h>
  75 #include <vm/vm_fault.h>
  76 #include <vm/vm_init.h>
  77
  78 #include <pexpert/pexpert.h>
  79
  80 #include <vm/vm_protos.h>
  81
  82 #define ZONE_MAP_MIN CONFIG_ZONE_MAP_MIN
  83
  84 /* Maximum zone size is 1.5G */
  85 #define ZONE_MAP_MAX (1024 * 1024 * 1536)
  86
  87 const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_AND_KEXT_ADDRESS;
  88 const vm_offset_t vm_max_kernel_address = VM_MAX_KERNEL_ADDRESS;
  89
  90 boolean_t vm_kernel_ready = FALSE;
  91 boolean_t zlog_ready = FALSE;
  92
  93 /*
  94  *      vm_mem_bootstrap initializes the virtual memory system.
  95  *      This is done only by the first cpu up.
  96  */
  97
  98 void
  99 vm_mem_bootstrap(void)
 100 {
 101         vm_offset_t     start, end;
 102         vm_size_t zsizearg;
 103         mach_vm_size_t zsize;
 104
 105         /*
 106          *      Initializes resident memory structures.
 107          *      From here on, all physical memory is accounted for,
 108          *      and we use only virtual addresses.
 109          */
 110 #define vm_mem_bootstrap_kprintf(x)
 111
 112         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling vm_page_bootstrap\n"));
 113         vm_page_bootstrap(&start, &end);
 114
 115         /*
 116          *      Initialize other VM packages
 117          */
 118
 119         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling zone_bootstrap\n"));
 120         zone_bootstrap();
 121
 122         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling vm_object_bootstrap\n"));
 123         vm_object_bootstrap();
 124
 125         vm_kernel_ready = TRUE;
 126
 127         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling vm_map_int\n"));
 128         vm_map_init();
 129
 130         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling kmem_init\n"));
 131         kmem_init(start, end);
 132
 133         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling pmap_init\n"));
 134         pmap_init();
 135
 136         zlog_ready = TRUE;
 137
 138         if (PE_parse_boot_argn("zsize", &zsizearg, sizeof (zsizearg)))
 139                 zsize = zsizearg * 1024ULL * 1024ULL;
 140         else {
 141                 zsize = sane_size >> 2;                         /* Get target zone size as 1/4 of physical memory */
 142         }
 143
 144         if (zsize < ZONE_MAP_MIN)
 145                 zsize = ZONE_MAP_MIN;   /* Clamp to min */
 146 #if defined(__LP64__)
 147         zsize += zsize >> 1;
 148 #endif  /* __LP64__ */
 149         if (zsize > sane_size >> 1)
 150                 zsize = sane_size >> 1; /* Clamp to half of RAM max */
 151 #if !__LP64__
 152         if (zsize > ZONE_MAP_MAX)
 153                 zsize = ZONE_MAP_MAX;   /* Clamp to 1.5GB max for K32 */
 154 #endif /* !__LP64__ */
 155
 156         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling kext_alloc_init\n"));
 157         kext_alloc_init();
 158
 159         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling zone_init\n"));
 160         assert((vm_size_t) zsize == zsize);
 161         zone_init((vm_size_t) zsize);                                           /* Allocate address space for zones */
 162
 163         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling kalloc_init\n"));
 164         kalloc_init();
 165
 166         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling vm_fault_init\n"));
 167         vm_fault_init();
 168
 169         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling vm_page_module_init\n"));
 170         vm_page_module_init();
 171
 172         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling memory_manager_default_init\n"));
 173         memory_manager_default_init();
 174
 175         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling meory_object_control_bootstrap\n"));
 176         memory_object_control_bootstrap();
 177
 178         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling device_pager_bootstrap\n"));
 179         device_pager_bootstrap();
 180
 181         vm_paging_map_init();
 182
 183         vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: done\n"));
 184 }
 185
 186 void
 187 vm_mem_init(void)
 188 {
 189         vm_object_init();
 190 }