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: releng/8.0/sys/mips/include/bootinfo.h 178172 2008-04-13 07:27:37Z imp $
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 #define MIPS_BOOTINFO_MAGIC 0xCDEACDEA
44
45 /* Extended OLV bootinfo struct. The data area includes a list of named
46 OIDs and associated data values. The format is:
47
48 NUL-terminated dotted-string name
49 2 byte length, in big-endian order
50 LENGTH bytes of data
51 [...]
52
53 The two magic fields are used to guard against other bootloaders that
54 may place other sorts of data here. */
55
56 struct bootinfo_ext {
57 #define BOOTINFO_EXT_MAGIC1 0x55aa00ff
58 unsigned int magic1;
59 unsigned char *data;
60 unsigned int size;
61 #define BOOTINFO_EXT_MAGIC2 0x32719187
62 unsigned int magic2;
63 };
64
65 #define BOOTINFO_EXT_MAX_SIZE 16384
66
67 /*
68 * A zero bootinfo field often means that there is no info available.
69 * Flags are used to indicate the validity of fields where zero is a
70 * normal value.
71 */
72 struct bootinfo {
73 u_int32_t bi_version;
74 u_int32_t bi_kernelname; /* represents a char * */
75 u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */
76 /* End of fields that are always present. */
77 #define bi_endcommon bi_n_bios_used
78 u_int32_t bi_n_bios_used;
79 u_int32_t bi_bios_geom[N_BIOS_GEOM];
80 u_int32_t bi_size;
81 u_int8_t bi_memsizes_valid;
82 u_int8_t bi_bios_dev; /* bootdev BIOS unit number */
83 u_int8_t bi_pad[2];
84 u_int32_t bi_basemem;
85 u_int32_t bi_extmem;
86 u_int32_t bi_symtab; /* struct symtab * */
87 u_int32_t bi_esymtab; /* struct symtab * */
88 /* Items below only from advanced bootloader */
89 u_int32_t bi_kernend; /* end of kernel space */
90 u_int32_t bi_envp; /* environment */
91 u_int32_t bi_modulep; /* preloaded modules */
92 };
93
94 #ifdef _KERNEL
95 extern struct bootinfo bootinfo;
96 #endif
97
98 /*
99 * Constants for converting boot-style device number to type,
100 * adaptor (uba, mba, etc), unit number and partition number.
101 * Type (== major device number) is in the low byte
102 * for backward compatibility. Except for that of the "magic
103 * number", each mask applies to the shifted value.
104 * Format:
105 * (4) (4) (4) (4) (8) (8)
106 * --------------------------------
107 * |MA | AD| CT| UN| PART | TYPE |
108 * --------------------------------
109 */
110 #define B_ADAPTORSHIFT 24
111 #define B_ADAPTORMASK 0x0f
112 #define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
113 #define B_CONTROLLERSHIFT 20
114 #define B_CONTROLLERMASK 0xf
115 #define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
116 #define B_SLICESHIFT 20
117 #define B_SLICEMASK 0xff
118 #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
119 #define B_UNITSHIFT 16
120 #define B_UNITMASK 0xf
121 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
122 #define B_PARTITIONSHIFT 8
123 #define B_PARTITIONMASK 0xff
124 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
125 #define B_TYPESHIFT 0
126 #define B_TYPEMASK 0xff
127 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
128
129 #define B_MAGICMASK 0xf0000000
130 #define B_DEVMAGIC 0xa0000000
131
132 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
133 (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
134 ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
135 ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
136
137 #define BASE_SLICE 2
138 #define COMPATIBILITY_SLICE 0
139 #define MAX_SLICES 32
140 #define WHOLE_DISK_SLICE 1
141
142 #endif /* !_MACHINE_BOOTINFO_H_ */
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