/*	$OpenBSD: boot_flag.h,v 1.5 2014/11/26 20:06:53 stsp Exp $	*/
/*	$NetBSD: boot_flag.h,v 1.3 2001/07/01 02:56:21 gmcgarry Exp $	*/

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _MACHINE_BOOT_FLAG_H_
#define _MACHINE_BOOT_FLAG_H_

#include <sys/reboot.h>

/*
 * Recognize standard boot arguments. If the flag is known, appropriate
 * value is or'ed to retval, otherwise retval is left intact.
 * Note that not all ports use all flags recognized here. This list is mere
 * concatenation of all non-conflicting standard boot flags. Individual ports
 * might use also other flags (see e.g. alpha).
 */
#define	BOOT_FLAG(arg, retval) do {				\
	switch (arg) {						\
	case 'a': /* ask for file name to boot from */		\
		(retval) |= RB_ASKNAME;				\
		break;						\
	case 'b': /* always halt, never reboot */		\
		(retval) |= RB_HALT;				\
		break;						\
	case 'c': /* userconf */				\
		(retval) |= RB_CONFIG;			\
		break;						\
	case 'd': /* break into the kernel debugger ASAP (if compiled in) */ \
		(retval) |= RB_KDB;				\
		break;						\
	case 's': /* boot to single user */			\
		(retval) |= RB_SINGLE;				\
		break;						\
	default:  /* something else, do nothing */		\
		break;						\
	} /* switch */						\
								\
	} while (/* CONSTCOND */ 0)


/* softraid boot information */
#define BOOTSR_UUID_MAX 16
#define BOOTSR_CRYPTO_MAXKEYBYTES 32

/* MD boot data in .openbsd.bootdata ELF segment */
struct openbsd_bootdata {
	u_int64_t 	version;
	u_int64_t 	len;	/* of structure */

	u_int8_t	sr_uuid[BOOTSR_UUID_MAX];
	u_int8_t	sr_maskkey[BOOTSR_CRYPTO_MAXKEYBYTES];
} __packed;

#define BOOTDATA_VERSION	1

#endif /* _MACHINE_BOOT_FLAG_H_ */