1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)vm_init.c 8.1 (Berkeley) 06/11/93 11 * 12 * 13 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 14 * All rights reserved. 15 * 16 * Authors: Avadis Tevanian, Jr., Michael Wayne Young 17 * 18 * Permission to use, copy, modify and distribute this software and 19 * its documentation is hereby granted, provided that both the copyright 20 * notice and this permission notice appear in all copies of the 21 * software, derivative works or modified versions, and any portions 22 * thereof, and that both notices appear in supporting documentation. 23 * 24 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 25 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 26 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 27 * 28 * Carnegie Mellon requests users of this software to return to 29 * 30 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 31 * School of Computer Science 32 * Carnegie Mellon University 33 * Pittsburgh PA 15213-3890 34 * 35 * any improvements or extensions that they make and grant Carnegie the 36 * rights to redistribute these changes. 37 */ 38 39 /* 40 * Initialize the Virtual Memory subsystem. 41 */ 42 43 #include <sys/param.h> 44 45 #include <vm/vm.h> 46 #include <vm/vm_page.h> 47 #include <vm/vm_kern.h> 48 49 /* 50 * vm_init initializes the virtual memory system. 51 * This is done only by the first cpu up. 52 * 53 * The start and end address of physical memory is passed in. 54 */ 55 56 void vm_mem_init() 57 { 58 extern vm_offset_t avail_start, avail_end; 59 extern vm_offset_t virtual_avail, virtual_end; 60 61 /* 62 * Initializes resident memory structures. 63 * From here on, all physical memory is accounted for, 64 * and we use only virtual addresses. 65 */ 66 vm_set_page_size(); 67 vm_page_startup(&avail_start, &avail_end); 68 69 /* 70 * Initialize other VM packages 71 */ 72 vm_object_init(virtual_end - VM_MIN_KERNEL_ADDRESS); 73 vm_map_startup(); 74 kmem_init(virtual_avail, virtual_end); 75 pmap_init(avail_start, avail_end); 76 vm_pager_init(); 77 } 78