1*1b1a55d0Schs /* $NetBSD: disklabel.h,v 1.10 2011/10/01 15:59:00 chs Exp $ */ 28b0113cfSleo 38b0113cfSleo /* 48b0113cfSleo * Copyright (c) 1995 Leo Weppelman. 58b0113cfSleo * All rights reserved. 68b0113cfSleo * 78b0113cfSleo * Redistribution and use in source and binary forms, with or without 88b0113cfSleo * modification, are permitted provided that the following conditions 98b0113cfSleo * are met: 108b0113cfSleo * 1. Redistributions of source code must retain the above copyright 118b0113cfSleo * notice, this list of conditions and the following disclaimer. 128b0113cfSleo * 2. Redistributions in binary form must reproduce the above copyright 138b0113cfSleo * notice, this list of conditions and the following disclaimer in the 148b0113cfSleo * documentation and/or other materials provided with the distribution. 158b0113cfSleo * 168b0113cfSleo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 178b0113cfSleo * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 188b0113cfSleo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 198b0113cfSleo * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 208b0113cfSleo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 218b0113cfSleo * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 228b0113cfSleo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 238b0113cfSleo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 248b0113cfSleo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 258b0113cfSleo * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 268b0113cfSleo */ 278b0113cfSleo 288b0113cfSleo #ifndef _MACHINE_DISKLABEL_H_ 298b0113cfSleo #define _MACHINE_DISKLABEL_H_ 308b0113cfSleo 310cd79344Sjtc /* 320cd79344Sjtc * On a volume, exclusively used by NetBSD, the boot block starts at 33dc321cadSleo * sector 0. To allow shared use of a volume between two or more OS's, 340cd79344Sjtc * the vendor specific AHDI format is supported. In this case the boot 350cd79344Sjtc * block is located at the start of an AHDI partition. In any case the 36dc321cadSleo * size of the boot block must be at least 8KB. 370cd79344Sjtc */ 38dc321cadSleo #define BBMINSIZE 8192 /* minimum size of boot block */ 39509fd41bSbouyer #define LABELUSESMBR 0 /* no MBR partitionning */ 400cd79344Sjtc #define LABELSECTOR 0 /* `natural' start of boot block */ 41dc321cadSleo #define LABELOFFSET 516 /* offset of disk label in bytes, 423f76d2e7Sleo relative to start of boot block */ 43dc321cadSleo #define LABELMAXSIZE 1020 /* maximum size of disk label, at 44dc321cadSleo least (MAXPARTITIONS * 16 + 152)*/ 45dc321cadSleo #define MAXPARTITIONS 16 /* max. # of NetBSD partitions */ 46be5d89daSjdc #define SWAP_PART 1 /* xx?b is default swap partition */ 473f76d2e7Sleo #define RAW_PART 2 /* xx?c is raw partition */ 483f76d2e7Sleo 4979b57114Swiz #define MAXAUXROOTS 29 /* max. # of auxiliary root sectors */ 508b0113cfSleo 518b0113cfSleo struct cpu_disklabel { 52dc321cadSleo u_int cd_bblock; /* start of NetBSD boot block */ 53dc321cadSleo #define NO_BOOT_BLOCK ((u_int)-1) 54dc321cadSleo u_int cd_label; /* offset of NetBSD disk label */ 55dc321cadSleo #ifdef DISKLABEL_AHDI 56dc321cadSleo u_int cd_bslst; /* start of AHDI bad sector list */ 57dc321cadSleo u_int cd_bslend; /* end of AHDI bad sector list */ 5879b57114Swiz u_int cd_roots[MAXAUXROOTS+1]; /* auxiliary root sectors */ 59dc321cadSleo #endif /* DISKLABEL_AHDI */ 608b0113cfSleo }; 618b0113cfSleo 62dc321cadSleo struct bootblock { 63dc321cadSleo u_int8_t bb_xxboot[LABELOFFSET - sizeof(u_int32_t)]; 64dc321cadSleo /* first-stage boot loader */ 65dc321cadSleo u_int32_t bb_magic; /* boot block magic number */ 66dc321cadSleo #define NBDAMAGIC 0x4e424441 /* 'NBDA' */ 67dc321cadSleo #define AHDIMAGIC 0x41484449 /* 'AHDI' */ 68dc321cadSleo u_int8_t bb_label[LABELMAXSIZE]; /* disk pack label */ 69dc321cadSleo u_int8_t bb_bootxx[BBMINSIZE - LABELOFFSET - LABELMAXSIZE]; 70dc321cadSleo /* second-stage boot loader*/ 71dc321cadSleo }; 72dc321cadSleo 73dc321cadSleo struct disklabel; 74*1b1a55d0Schs #define BBGETLABEL(bb, dl) memcpy((dl), (bb)->bb_label, sizeof (struct disklabel)) 75*1b1a55d0Schs #define BBSETLABEL(bb, dl) memcpy((bb)->bb_label, (dl), sizeof (struct disklabel)) 76dc321cadSleo 778b0113cfSleo #endif /* _MACHINE_DISKLABEL_H_ */ 78