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Annotation of XNU/osfmk/vm/vm_init.c, revision 1.1.1.1

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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