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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/sys/reboot.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1993,1991,1990 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.
+ */
+/*
+ * HISTORY
+ * $Log$
+ * Revision 1.1  1993/08/03 22:25:15  roland
+ * entered into RCS
+ *
+ * Revision 1.1  1993/08/03 22:25:15  roland
+ * entered into RCS
+ *
+ * Revision 2.8  93/03/11  13:46:40  danner
+ * 	u_long -> u_int.
+ * 	[93/03/09            danner]
+ * 
+ * Revision 2.7  92/05/21  17:25:11  jfriedl
+ * 	Appended 'U' to constants that would otherwise be signed.
+ * 	[92/05/16            jfriedl]
+ * 
+ * Revision 2.6  91/06/19  11:59:44  rvb
+ * 	Second byte of boothowto is flags for "startup" program.
+ * 	[91/06/18            rvb]
+ * 	Add ifndef ASSEMBLER so that vax_init.s can include it.
+ * 	[91/06/11            rvb]
+ * 
+ * Revision 2.5  91/05/14  17:40:11  mrt
+ * 	Correcting copyright
+ * 
+ * Revision 2.4  91/02/05  17:56:48  mrt
+ * 	Changed to new Mach copyright
+ * 	[91/02/01  17:49:12  mrt]
+ * 
+ * Revision 2.3  90/08/27  22:12:56  dbg
+ * 	Added definitions used by Mach Kernel: RB_DEBUGGER, RB_UNIPROC,
+ * 	RB_NOBOOTRC, RB_ALTBOOT.  Moved RB_KDB to 0x04 (Mach value).
+ * 	Removed RB_RDONLY, RB_DUMP, RB_NOSYNC.
+ * 	[90/08/14            dbg]
+ * 
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *	@(#)reboot.h	7.5 (Berkeley) 6/27/88
+ */
+
+#ifndef	_SYS_REBOOT_H_
+#define	_SYS_REBOOT_H_
+
+/*
+ * Arguments to reboot system call.
+ * These are converted to switches, and passed to startup program,
+ * and on to init.
+ */
+#define	RB_AUTOBOOT	0	/* flags for system auto-booting itself */
+
+#define	RB_ASKNAME	0x01	/* -a: ask for file name to reboot from */
+#define	RB_SINGLE	0x02	/* -s: reboot to single user only */
+#define	RB_KDB		0x04	/* -d: kernel debugger symbols loaded */
+#define	RB_HALT		0x08	/* -h: enter KDB at bootup */
+				/*     for host_reboot(): don't reboot,
+				       just halt */
+#define	RB_INITNAME	0x10	/* -i: name given for /etc/init (unused) */
+#define	RB_DFLTROOT	0x20	/*     use compiled-in rootdev */
+#define	RB_NOBOOTRC	0x20	/* -b: don't run /etc/rc.boot */
+#define RB_ALTBOOT	0x40	/*     use /boot.old vs /boot */
+#define	RB_UNIPROC	0x80	/* -u: start only one processor */
+
+#define	RB_SHIFT	8	/* second byte is for ux */
+
+#define	RB_DEBUGGER	0x1000	/*     for host_reboot(): enter kernel
+				       debugger from user level */
+
+/*
+ * Constants for converting boot-style device number to type,
+ * adaptor (uba, mba, etc), unit number and partition number.
+ * Type (== major device number) is in the low byte
+ * for backward compatibility.  Except for that of the "magic
+ * number", each mask applies to the shifted value.
+ * Format:
+ *	 (4) (4) (4) (4)  (8)     (8)
+ *	--------------------------------
+ *	|MA | AD| CT| UN| PART  | TYPE |
+ *	--------------------------------
+ */
+#define	B_ADAPTORSHIFT		24
+#define	B_ADAPTORMASK		0x0f
+#define	B_ADAPTOR(val)		(((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
+#define B_CONTROLLERSHIFT	20
+#define B_CONTROLLERMASK	0xf
+#define	B_CONTROLLER(val)	(((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
+#define B_UNITSHIFT		16
+#define B_UNITMASK		0xf
+#define	B_UNIT(val)		(((val) >> B_UNITSHIFT) & B_UNITMASK)
+#define B_PARTITIONSHIFT	8
+#define B_PARTITIONMASK		0xff
+#define	B_PARTITION(val)	(((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
+#define	B_TYPESHIFT		0
+#define	B_TYPEMASK		0xff
+#define	B_TYPE(val)		(((val) >> B_TYPESHIFT) & B_TYPEMASK)
+
+#define	B_MAGICMASK	((u_int)0xf0000000U)
+#define	B_DEVMAGIC	((u_int)0xa0000000U)
+
+#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
+	(((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
+	((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
+	((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
+
+
+#ifdef	KERNEL
+#ifndef	ASSEMBLER
+extern int boothowto;
+#endif	ASSEMBLER
+#endif
+
+#endif	/* _SYS_REBOOT_H_ */