| 1 | /*- |
| 2 | * SPDX-License-Identifier: BSD-4-Clause |
| 3 | * |
| 4 | * Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222 |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer as |
| 12 | * the first lines of this file unmodified. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. All advertising materials mentioning features or use of this software |
| 17 | * must display the following acknowledgement: |
| 18 | * This product includes software developed by Rodney W. Grimes. |
| 19 | * 4. The name of the author may not be used to endorse or promote products |
| 20 | * derived from this software without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 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 _WAS_N_BIOS_GEOM 8 |
| 42 | |
| 43 | /* |
| 44 | * A zero bootinfo field often means that there is no info available. |
| 45 | * Assumes booting with a boot loader from FreeBSD 2.1 or newer and |
| 46 | * that bi_size is always valid when bi_version == 1. |
| 47 | */ |
| 48 | struct bootinfo { |
| 49 | u_int32_t bi_version; /* Must be 1 */ |
| 50 | u_int32_t bi_kernelname; /* represents a char * */ |
| 51 | u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */ |
| 52 | u_int32_t _was_bi_n_bios_used; |
| 53 | u_int32_t _was_bi_bios_geom[_WAS_N_BIOS_GEOM]; |
| 54 | u_int32_t bi_size; |
| 55 | u_int8_t bi_memsizes_valid; |
| 56 | u_int8_t bi_bios_dev; /* bootdev BIOS unit number (bootX -> loader only) */ |
| 57 | u_int8_t bi_pad[2]; |
| 58 | u_int32_t bi_basemem; |
| 59 | u_int32_t bi_extmem; |
| 60 | u_int32_t bi_symtab; /* struct symtab * */ |
| 61 | u_int32_t bi_esymtab; /* struct symtab * */ |
| 62 | /* Items below only from advanced bootloader */ |
| 63 | u_int32_t bi_kernend; /* end of kernel space */ |
| 64 | u_int32_t bi_envp; /* environment */ |
| 65 | u_int32_t bi_modulep; /* preloaded modules */ |
| 66 | }; |
| 67 | |
| 68 | #ifdef _KERNEL |
| 69 | extern struct bootinfo bootinfo; |
| 70 | #endif |
| 71 | |
| 72 | /* |
| 73 | * Constants for converting boot-style device number to type, |
| 74 | * adaptor (uba, mba, etc), unit number and partition number. |
| 75 | * Type (== major device number) is in the low byte |
| 76 | * for backward compatibility. Except for that of the "magic |
| 77 | * number", each mask applies to the shifted value. |
| 78 | * Format: |
| 79 | * (4) (8) (4) (8) (8) |
| 80 | * -------------------------------- |
| 81 | * |MA | SLICE | UN| PART | TYPE | |
| 82 | * -------------------------------- |
| 83 | */ |
| 84 | #define B_SLICESHIFT 20 |
| 85 | #define B_SLICEMASK 0xff |
| 86 | #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK) |
| 87 | #define B_UNITSHIFT 16 |
| 88 | #define B_UNITMASK 0xf |
| 89 | #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK) |
| 90 | #define B_PARTITIONSHIFT 8 |
| 91 | #define B_PARTITIONMASK 0xff |
| 92 | #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK) |
| 93 | #define B_TYPESHIFT 0 |
| 94 | #define B_TYPEMASK 0xff |
| 95 | #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK) |
| 96 | |
| 97 | #define B_MAGICMASK 0xf0000000 |
| 98 | #define B_DEVMAGIC 0xa0000000 |
| 99 | |
| 100 | #define MAKEBOOTDEV(type, slice, unit, partition) \ |
| 101 | (((type) << B_TYPESHIFT) | ((slice) << B_SLICESHIFT) | \ |
| 102 | ((unit) << B_UNITSHIFT) | ((partition) << B_PARTITIONSHIFT) | \ |
| 103 | B_DEVMAGIC) |
| 104 | |
| 105 | #define BASE_SLICE 2 |
| 106 | #define COMPATIBILITY_SLICE 0 |
| 107 | #define MAX_SLICES 32 |
| 108 | #define WHOLE_DISK_SLICE 1 |
| 109 | |
| 110 | #endif /* !_MACHINE_BOOTINFO_H_ */ |