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#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 56struct 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 */ 72struct 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 95extern 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_ */ 143