1/*-
2 * Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon  97222
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Rodney W. Grimes.
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD$
33 */
34
35#ifndef	_MACHINE_BOOTINFO_H_
36#define	_MACHINE_BOOTINFO_H_
37
38/* Only change the version number if you break compatibility. */
39#define	BOOTINFO_VERSION	1
40
41#define	N_BIOS_GEOM		8
42
43/*
44 * A zero bootinfo field often means that there is no info available.
45 * Flags are used to indicate the validity of fields where zero is a
46 * normal value.
47 */
48struct bootinfo {
49	u_int32_t	bi_version;
50	u_int32_t	bi_kernelname;		/* represents a char * */
51	u_int32_t	bi_nfs_diskless;	/* struct nfs_diskless * */
52				/* End of fields that are always present. */
53#define	bi_endcommon	bi_n_bios_used
54	u_int32_t	bi_n_bios_used;
55	u_int32_t	bi_bios_geom[N_BIOS_GEOM];
56	u_int32_t	bi_size;
57	u_int8_t	bi_memsizes_valid;
58	u_int8_t	bi_bios_dev;		/* bootdev BIOS unit number */
59	u_int8_t	bi_pad[2];
60	u_int32_t	bi_basemem;
61	u_int32_t	bi_extmem;
62	u_int32_t	bi_symtab;		/* struct symtab * */
63	u_int32_t	bi_esymtab;		/* struct symtab * */
64				/* Items below only from advanced bootloader */
65	u_int32_t	bi_kernend;		/* end of kernel space */
66	u_int32_t	bi_envp;		/* environment */
67	u_int32_t	bi_modulep;		/* preloaded modules */
68	uint32_t	bi_memdesc_version;	/* EFI memory desc version */
69	uint64_t	bi_memdesc_size;	/* sizeof EFI memory desc */
70	uint64_t	bi_memmap;		/* pa of EFI memory map */
71	uint64_t	bi_memmap_size;		/* size of EFI memory map */
72	uint64_t	bi_hcdp;		/* DIG64 HCDP table */
73	uint64_t	bi_fpswa;		/* FPSWA interface */
74	uint64_t	bi_systab;		/* pa of EFI system table */
75};
76
77#ifdef _KERNEL
78extern struct bootinfo	bootinfo;
79#endif
80
81/*
82 * Constants for converting boot-style device number to type,
83 * adaptor (uba, mba, etc), unit number and partition number.
84 * Type (== major device number) is in the low byte
85 * for backward compatibility.  Except for that of the "magic
86 * number", each mask applies to the shifted value.
87 * Format:
88 *	 (4)   (8)   (4)  (8)     (8)
89 *	--------------------------------
90 *	|MA | SLICE | UN| PART  | TYPE |
91 *	--------------------------------
92 */
93#define B_SLICESHIFT		20
94#define B_SLICEMASK		0xff
95#define B_SLICE(val)		(((val)>>B_SLICESHIFT) & B_SLICEMASK)
96#define B_UNITSHIFT		16
97#define B_UNITMASK		0xf
98#define	B_UNIT(val)		(((val) >> B_UNITSHIFT) & B_UNITMASK)
99#define B_PARTITIONSHIFT	8
100#define B_PARTITIONMASK		0xff
101#define	B_PARTITION(val)	(((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
102#define	B_TYPESHIFT		0
103#define	B_TYPEMASK		0xff
104#define	B_TYPE(val)		(((val) >> B_TYPESHIFT) & B_TYPEMASK)
105
106#define	B_MAGICMASK	0xf0000000
107#define	B_DEVMAGIC	0xa0000000
108
109#define	MAKEBOOTDEV(type, slice, unit, partition) \
110	(((type) << B_TYPESHIFT) | ((slice) << B_SLICESHIFT) | \
111	((unit) << B_UNITSHIFT) | ((partition) << B_PARTITIONSHIFT) | \
112	B_DEVMAGIC)
113
114#define	BASE_SLICE		2
115#define	COMPATIBILITY_SLICE	0
116#define	MAX_SLICES		32
117#define	WHOLE_DISK_SLICE	1
118
119#endif	/* !_MACHINE_BOOTINFO_H_ */
120