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Annotation of XNU/osfmk/vm/vm_init.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: /* 
        !            26:  * Mach Operating System
        !            27:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
        !            28:  * All Rights Reserved.
        !            29:  * 
        !            30:  * Permission to use, copy, modify and distribute this software and its
        !            31:  * documentation is hereby granted, provided that both the copyright
        !            32:  * notice and this permission notice appear in all copies of the
        !            33:  * software, derivative works or modified versions, and any portions
        !            34:  * thereof, and that both notices appear in supporting documentation.
        !            35:  * 
        !            36:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            37:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            38:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            39:  * 
        !            40:  * Carnegie Mellon requests users of this software to return to
        !            41:  * 
        !            42:  *  Software Distribution Coordinator  or  [email protected]
        !            43:  *  School of Computer Science
        !            44:  *  Carnegie Mellon University
        !            45:  *  Pittsburgh PA 15213-3890
        !            46:  * 
        !            47:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            48:  * the rights to redistribute these changes.
        !            49:  */
        !            50: /*
        !            51:  */
        !            52: /*
        !            53:  *     File:   vm/vm_init.c
        !            54:  *     Author: Avadis Tevanian, Jr., Michael Wayne Young
        !            55:  *     Date:   1985
        !            56:  *
        !            57:  *     Initialize the Virtual Memory subsystem.
        !            58:  */
        !            59: 
        !            60: #include <mach/machine/vm_types.h>
        !            61: #include <kern/zalloc.h>
        !            62: #include <kern/kalloc.h>
        !            63: #include <kern/rtmalloc.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: #define ZONE_MAP_MIN (12 * 1024 * 1024) 
        !            73: #define ZONE_MAP_MAX (128 * 1024 * 1024) 
        !            74: 
        !            75: /*
        !            76:  *     vm_mem_bootstrap initializes the virtual memory system.
        !            77:  *     This is done only by the first cpu up.
        !            78:  */
        !            79: 
        !            80: void
        !            81: vm_mem_bootstrap(void)
        !            82: {
        !            83:        vm_offset_t     start, end;
        !            84:        vm_size_t zsize;
        !            85: 
        !            86:        /*
        !            87:         *      Initializes resident memory structures.
        !            88:         *      From here on, all physical memory is accounted for,
        !            89:         *      and we use only virtual addresses.
        !            90:         */
        !            91: 
        !            92:        vm_page_bootstrap(&start, &end);
        !            93: 
        !            94:        /*
        !            95:         *      Initialize other VM packages
        !            96:         */
        !            97: 
        !            98:        zone_bootstrap();
        !            99:        vm_object_bootstrap();
        !           100:        vm_map_init();
        !           101:        kmem_init(start, end);
        !           102:        pmap_init();
        !           103:        
        !           104:        zsize = mem_size >> 2;                  /* Get target zone size as 1/4 of physical memory */
        !           105:        if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
        !           106:        if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
        !           107:        zone_init(zsize);                                               /* Allocate address space for zones */
        !           108:        
        !           109:        kalloc_init();
        !           110:        rtmalloc_init();
        !           111:        vm_fault_init();
        !           112:        vm_page_module_init();
        !           113:        memory_manager_default_init();
        !           114: }
        !           115: 
        !           116: void
        !           117: vm_mem_init(void)
        !           118: {
        !           119:        vm_object_init();
        !           120: }

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