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 |
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20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
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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 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 <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 |
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 |
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(message: "vm_page_bootstrap" ); |
113 | vm_page_bootstrap(startp: &start, endp: &end); |
114 | |
115 | /* |
116 | * Initialize other VM packages |
117 | */ |
118 | |
119 | vm_mem_bootstrap_log(message: "zone_bootstrap" ); |
120 | zone_bootstrap(); |
121 | |
122 | vm_mem_bootstrap_log(message: "vm_object_bootstrap" ); |
123 | vm_object_bootstrap(); |
124 | |
125 | vm_retire_boot_pages(); |
126 | |
127 | vm_mem_bootstrap_log(message: "vm_map_init" ); |
128 | vm_map_init(); |
129 | |
130 | vm_mem_bootstrap_log(message: "kmem_init" ); |
131 | kmem_init(start, end); |
132 | |
133 | kernel_startup_initialize_upto(upto: STARTUP_SUB_KMEM); |
134 | |
135 | vm_mem_bootstrap_log(message: "vm_fault_init" ); |
136 | vm_fault_init(); |
137 | |
138 | kernel_startup_initialize_upto(upto: STARTUP_SUB_ZALLOC); |
139 | |
140 | if (iokit_iomd_setownership_enabled) { |
141 | kprintf(fmt: "IOKit IOMD setownership ENABLED\n" ); |
142 | } else { |
143 | kprintf(fmt: "IOKit IOMD setownership DISABLED\n" ); |
144 | } |
145 | } |
146 | |