1 /*
2 * Copyright (c) 2000-2020 Apple 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,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
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 [email protected]
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 <mach/vm_map.h>
68 #include <kern/startup.h>
69 #include <kern/zalloc_internal.h>
70 #include <kern/kext_alloc.h>
71 #include <sys/kdebug.h>
72 #include <vm/vm_object.h>
73 #include <vm/vm_map_internal.h>
74 #include <vm/vm_page.h>
75 #include <vm/vm_kern.h>
76 #include <vm/memory_object.h>
77 #include <vm/vm_fault.h>
78 #include <vm/vm_init.h>
79
80 #include <pexpert/pexpert.h>
81
82 #include <vm/vm_protos.h>
83
84 const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_AND_KEXT_ADDRESS;
85 const vm_offset_t vm_max_kernel_address = VM_MAX_KERNEL_ADDRESS;
86
87 TUNABLE(bool, iokit_iomd_setownership_enabled,
88 "iokit_iomd_setownership_enabled", true);
89
90 static inline void
vm_mem_bootstrap_log(const char * message)91 vm_mem_bootstrap_log(const char *message)
92 {
93 // kprintf("vm_mem_bootstrap: %s\n", message);
94 kernel_debug_string_early(message);
95 }
96
97 /*
98 * vm_mem_bootstrap initializes the virtual memory system.
99 * This is done only by the first cpu up.
100 */
101 __startup_func
102 void
vm_mem_bootstrap(void)103 vm_mem_bootstrap(void)
104 {
105 vm_offset_t start, end;
106
107 /*
108 * Initializes resident memory structures.
109 * From here on, all physical memory is accounted for,
110 * and we use only virtual addresses.
111 */
112 vm_mem_bootstrap_log("vm_page_bootstrap");
113 vm_page_bootstrap(&start, &end);
114
115 /*
116 * Initialize other VM packages
117 */
118
119 vm_mem_bootstrap_log("zone_bootstrap");
120 zone_bootstrap();
121
122 vm_mem_bootstrap_log("vm_object_bootstrap");
123 vm_object_bootstrap();
124
125 vm_retire_boot_pages();
126
127 vm_mem_bootstrap_log("vm_map_init");
128 vm_map_init();
129
130 vm_mem_bootstrap_log("kmem_init");
131 kmem_init(start, end);
132
133 kernel_startup_initialize_upto(STARTUP_SUB_KMEM);
134
135 vm_mem_bootstrap_log("vm_fault_init");
136 vm_fault_init();
137
138 kernel_startup_initialize_upto(STARTUP_SUB_ZALLOC);
139
140 if (iokit_iomd_setownership_enabled) {
141 kprintf("IOKit IOMD setownership ENABLED\n");
142 } else {
143 kprintf("IOKit IOMD setownership DISABLED\n");
144 }
145 }
146