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: src/sys/i386/include/bootinfo.h,v 1.14 1999/12/29 04:32:57 peter Exp $ 33 * $DragonFly: src/sys/platform/pc64/include/bootinfo.h,v 1.1 2007/09/23 04:42:07 yanyh Exp $ 34 */ 35 36 #ifndef _MACHINE_BOOTINFO_H_ 37 #define _MACHINE_BOOTINFO_H_ 38 39 /* Only change the version number if you break compatibility. */ 40 #define BOOTINFO_VERSION 1 41 42 #define N_BIOS_GEOM 8 43 44 /* 45 * A zero bootinfo field often means that there is no info available. 46 * Flags are used to indicate the validity of fields where zero is a 47 * normal value. 48 */ 49 struct bootinfo { 50 u_int32_t bi_version; 51 u_int32_t bi_kernelname; /* represents a char * */ 52 u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */ 53 /* End of fields that are always present. */ 54 #define bi_endcommon bi_n_bios_used 55 u_int32_t bi_n_bios_used; 56 u_int32_t bi_bios_geom[N_BIOS_GEOM]; 57 u_int32_t bi_size; 58 u_int8_t bi_memsizes_valid; 59 u_int8_t bi_bios_dev; /* bootdev BIOS unit number */ 60 u_int8_t bi_pad[2]; 61 u_int32_t bi_basemem; 62 u_int32_t bi_extmem; 63 u_int32_t bi_symtab; /* struct symtab * */ 64 u_int32_t bi_esymtab; /* struct symtab * */ 65 /* Items below only from advanced bootloader */ 66 u_int32_t bi_kernend; /* end of kernel space */ 67 u_int32_t bi_envp; /* environment */ 68 u_int32_t bi_modulep; /* preloaded modules */ 69 }; 70 71 #ifdef _KERNEL 72 extern struct bootinfo bootinfo; 73 #endif 74 75 /* 76 * Constants for converting boot-style device number to type, 77 * adaptor (uba, mba, etc), unit number and partition number. 78 * Type (== major device number) is in the low byte 79 * for backward compatibility. Except for that of the "magic 80 * number", each mask applies to the shifted value. 81 * Format: 82 * (4) (8) (4) (8) (8) 83 * -------------------------------- 84 * |MA | SLICE | UN| PART | TYPE | 85 * -------------------------------- 86 */ 87 #define B_SLICESHIFT 20 88 #define B_SLICEMASK 0xff 89 #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK) 90 #define B_UNITSHIFT 16 91 #define B_UNITMASK 0xf 92 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK) 93 #define B_PARTITIONSHIFT 8 94 #define B_PARTITIONMASK 0xff 95 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK) 96 #define B_TYPESHIFT 0 97 #define B_TYPEMASK 0xff 98 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK) 99 100 #define B_MAGICMASK 0xf0000000 101 #define B_DEVMAGIC 0xa0000000 102 103 #define MAKEBOOTDEV(type, slice, unit, partition) \ 104 (((type) << B_TYPESHIFT) | ((slice) << B_SLICESHIFT) | \ 105 ((unit) << B_UNITSHIFT) | ((partition) << B_PARTITIONSHIFT) | \ 106 B_DEVMAGIC) 107 108 #define BASE_SLICE 2 109 #define COMPATIBILITY_SLICE 0 110 #define MAX_SLICES 16 111 #define WHOLE_DISK_SLICE 1 112 113 #endif /* !_MACHINE_BOOTINFO_H_ */ 114