xnu-344.tar.gz

[apple/xnu.git] / osfmk / mach / boot_info.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * HISTORY
 * 
 * Revision 1.1.1.1  1998/09/22 21:05:31  wsanchez
 * Import of Mac OS X kernel (~semeria)
 *
 * Revision 1.1.1.1  1998/03/07 02:25:45  wsanchez
 * Import of OSF Mach kernel (~mburg)
 *
 * Revision 1.2.16.4  1996/01/09  19:21:29  devrcs
 * 	Added bootstrap map for alpha.
 * 	This probably should be moved to some MD include file.
 * 	It's not really machine dependent, just a different
 * 	way of doing things.
 * 	[1995/12/01  19:49:04  jfraser]
 *
 * 	Merged '64-bit safe' changes from DEC alpha port.
 * 	[1995/11/21  18:08:36  jfraser]
 *
 * Revision 1.2.16.3  1995/01/06  19:50:04  devrcs
 * 	mk6 CR668 - 1.3b26 merge
 * 	Added region_desc structure;
 * 	[1994/10/14  03:42:28  dwm]
 * 
 * Revision 1.2.16.2  1994/09/23  02:34:18  ezf
 * 	change marker to not FREE
 * 	[1994/09/22  21:39:03  ezf]
 * 
 * Revision 1.2.16.1  1994/06/13  20:49:19  dlb
 * 	Merge MK6 and NMK17
 * 	[1994/06/13  20:24:22  dlb]
 * 
 * Revision 1.2.14.1  1994/02/08  11:01:06  bernadat
 * 	Checked in NMK16_1 changes
 * 	[94/02/04            bernadat]
 * 
 * Revision 1.2.12.1  1993/12/23  08:56:06  bernadat
 * 	Added COFF_F.
 * 	[93/11/29            bernadat]
 * 
 * Revision 1.2.3.2  1993/06/24  16:14:07  gm
 * 	CR9371: Moved here from default_pager.
 * 	[1993/06/24  16:08:52  gm]
 * 
 * Revision 1.2.3.2  1993/06/09  02:10:53  gm
 * 	Added to OSF/1 R1.3 from NMK15.0.
 * 	[1993/06/02  20:41:54  gm]
 * 
 * Revision 1.2  1993/04/19  16:31:50  devrcs
 * 	Added ROSE support: we need several symbol table entries since ROSE
 * 	can have up to 3 symbol section.
 * 	[93/03/24            bruel]
 * 
 * 	Use free copyright
 * 	[1993/03/03  12:12:37  bernadat]
 * 
 * 	Fixed History Revision Comments
 * 	[93/02/24            bernadat]
 * 
 * 	Created for external default pager.
 * 	[1993/02/09  15:40:42  bruel]
 * 
 * $EndLog$
 */
/* CMU_HIST */
/*
 * Revision 2.2  92/01/03  20:19:42  dbg
 * 	Created.
 * 	[91/09/06            dbg]
 * 
 */
/* CMU_ENDHIST */
/*
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon 
 * the rights to redistribute these changes.
 */

#ifndef	_MACH_BOOT_INFO_H_
#define	_MACH_BOOT_INFO_H_

#include <mach/machine/vm_types.h>
#include <mach/vm_prot.h>
#include <mach/boolean.h>

/*
 * The boot loader uses several instances of the following structure to
 * provide a description of the bootstrap task virtual address space,
 * consisting of memory regions that need to be mapped from physical pages
 * filled by the boot loader, or regions that need to be allocated in the
 * new address space.
 */
struct region_desc {
	vm_offset_t	addr;		/* virtual address */
	vm_offset_t	offset;		/* offset within object */
	vm_size_t	size;		/* size */
	vm_prot_t	prot;		/* protection */
	boolean_t	mapped;		/* mapped or zero-filled */
};

#ifdef 	__alpha
typedef  long physaddr_t;
#define NBOOT_REGIONS	5

#define TEXT	0
#define DATA	1
#define BSS	2
#define STACK	3
#define SYMS	4

struct bootstrap_map {
	physaddr_t  boot_location;
	long	boot_size;
	long	boot_entry;
	long	boot_gp_value;
	long	boot_region_count;
	struct region_desc boot_regions[NBOOT_REGIONS];
};

#endif 	/* __alpha */

#define	BOOT_INFO_COMPAT	1
#if	BOOT_INFO_COMPAT
/*
 * Old compat code for makeboot produced images
 */

/*
 * Structure of Mach kernel boot file.
 */
#include <mach/machine/vm_types.h>

/*
 *	A Mach kernel boot file consists of the Mach
 *	kernel image and the bootstrap image, glued
 *	together.
 *
 *	The first part of the file is a normal executable
 *	(bootable) file: a.out, coff, or whatever.  The
 *	text and data sizes are set to include the entire
 *	file.  (Some machines do not allow a zero-length
 *	data segment).
 *
 *	The rest of the file sits where the kernel BSS
 *	should be.  A boot_info record describes the
 *	sizes of the next 3 sections.  Following this
 *	are the kernel symbol table, the bootstrap image
 *	(including its symbol table), and the loader
 *	information for the bootstrap image.  Each
 *	of these sections is padded to an integer (4-byte)
 *	boundary.
 *
 *	When the file is loaded into memory, the kernel
 *	text and data segments are at their normal locations.
 *
 *	The boot_info structure appears at the start of
 *	the bss (at 'edata[]'):
 */

struct boot_info {
	vm_size_t	sym_size;		/* size of kernel symbols */
	vm_size_t	boot_size;		/* size of bootstrap image */
	vm_size_t	load_info_size;		/* size of loader information
						   for bootstrap image */
};

/*
 *	The 3 sections must be moved out of BSS for the kernel to run:
 *
 *	The kernel symbol table follows the BSS (at 'end[]').
 *
 *	The bootstrap image is on the first page boundary (machine page
 *	size) following the kernel symbol table.
 *
 *	The loader information immediately follows the bootstrap image.
 */

/*
 *	Loader information for bootstrap image:
 */

#define AOUT_F 1
#define ROSE_F 2
#define COFF_F 3

struct loader_info {
    int         format;         /* symbol table format (A.OUT or ROSE) */  
    vm_offset_t	text_start;	/* text start in memory */
    vm_size_t	text_size;	/* text size */
    vm_offset_t	text_offset;	/* text offset in file */
    vm_offset_t	data_start;	/* data+bss start in memory */
    vm_size_t	data_size;	/* data size */
    vm_offset_t	data_offset;	/* data offset in file */
    vm_size_t	bss_size;	/* BSS size */
    vm_offset_t str_offset;     /* strings table offset in file */
    vm_size_t   str_size;       /* strings table size */
    vm_offset_t	sym_offset[4];	/* symbol table offset in file */
    vm_size_t	sym_size[4];	/* symbol table size */
    vm_offset_t	entry_1;	/* 2 words for entry address */
    vm_offset_t	entry_2;
} ;

#define	EX_NOT_EXECUTABLE	6000

#endif	/* BOOT_INFO_COMPAT */

#endif	/* _MACH_BOOT_INFO_H_ */