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 */ 48 struct 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 }; 69 70 #ifdef _KERNEL 71 extern struct bootinfo bootinfo; 72 #endif 73 74 /* 75 * Constants for converting boot-style device number to type, 76 * adaptor (uba, mba, etc), unit number and partition number. 77 * Type (== major device number) is in the low byte 78 * for backward compatibility. Except for that of the "magic 79 * number", each mask applies to the shifted value. 80 * Format: 81 * (4) (4) (4) (4) (8) (8) 82 * -------------------------------- 83 * |MA | AD| CT| UN| PART | TYPE | 84 * -------------------------------- 85 */ 86 #define B_ADAPTORSHIFT 24 87 #define B_ADAPTORMASK 0x0f 88 #define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK) 89 #define B_CONTROLLERSHIFT 20 90 #define B_CONTROLLERMASK 0xf 91 #define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK) 92 #define B_SLICESHIFT 20 93 #define B_SLICEMASK 0xff 94 #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK) 95 #define B_UNITSHIFT 16 96 #define B_UNITMASK 0xf 97 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK) 98 #define B_PARTITIONSHIFT 8 99 #define B_PARTITIONMASK 0xff 100 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK) 101 #define B_TYPESHIFT 0 102 #define B_TYPEMASK 0xff 103 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK) 104 105 #define B_MAGICMASK 0xf0000000 106 #define B_DEVMAGIC 0xa0000000 107 108 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \ 109 (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \ 110 ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \ 111 ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC) 112 113 #define BASE_SLICE 2 114 #define COMPATIBILITY_SLICE 0 115 #define MAX_SLICES 32 116 #define WHOLE_DISK_SLICE 1 117 118 #endif /* !_MACHINE_BOOTINFO_H_ */ 119