1 /* $NetBSD: ahdilabel.h,v 1.3 2001/07/26 23:07:57 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Leo Weppelman. 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. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Leo Weppelman. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_AHDILABEL_H_ 34 #define _MACHINE_AHDILABEL_H_ 35 36 #define AHDI_BSIZE 512 /* AHDI blocksize */ 37 #define AHDI_BBLOCK 0 /* AHDI bootblock (root sector) */ 38 #define AHDI_MAXROOTS (MAXAUXROOTS) /* max. # of AHDI rootsectors */ 39 #define AHDI_MAXPARTS (AHDI_MAXROOTS+3) /* max. # of AHDI partitions */ 40 41 /* 42 * Various `well known' AHDI partition identifiers. 43 */ 44 #define AHDI_MKPID(x,y,z) ( ((u_int32_t)(x) << 16) \ 45 | ((u_int32_t)(y) << 8) \ 46 | ((u_int32_t)(z)) \ 47 ) 48 #define AHDI_PID_XGM AHDI_MKPID('X','G','M') 49 #define AHDI_PID_GEM AHDI_MKPID('G','E','M') 50 #define AHDI_PID_BGM AHDI_MKPID('B','G','M') 51 #define AHDI_PID_RAW AHDI_MKPID('R','A','W') 52 #define AHDI_PID_SWP AHDI_MKPID('S','W','P') 53 #define AHDI_PID_NBD AHDI_MKPID('N','B','D') 54 #define AHDI_PID_NBR AHDI_MKPID('N','B','R') 55 #define AHDI_PID_NBS AHDI_MKPID('N','B','S') 56 #define AHDI_PID_NBU AHDI_MKPID('N','B','U') 57 58 /* 59 * Format of AHDI boot block. 60 */ 61 #define AHDI_MAXRPD 4 /* max. # of partition descriptors */ 62 /* in an AHDI bootblock (aka root) */ 63 #define AHDI_MAXARPD 2 /* max. # of partition descriptors */ 64 /* in an AHDI auxiliary root sector */ 65 struct ahdi_part { 66 u_int8_t ap_flg; /* bit 0 is in-use flag */ 67 u_int8_t ap_id[3]; /* id: GEM, BGM, XGM, UNX, MIX */ 68 u_int32_t ap_st; /* block where partition starts */ 69 u_int32_t ap_size; /* partition size in blocks */ 70 } __attribute__((__packed__)); 71 #define ap_end ap_size /* in the in-core copy, store end instead of size */ 72 73 struct ahdi_root { 74 u_int8_t ar_fill[0x1c2];/* filler, can be boot code */ 75 u_int32_t ar_hdsize; /* size of entire volume in blocks */ 76 struct ahdi_part ar_parts[AHDI_MAXRPD]; /* root partition table */ 77 u_int32_t ar_bslst; /* start of bad-sector list */ 78 u_int32_t ar_bslsize; /* # of blocks in bad-sector list */ 79 u_int16_t ar_checksum; 80 } __attribute__((__packed__)); 81 82 /* 83 * AHDI partition table. 84 */ 85 #ifdef _KERNEL 86 struct ahdi_ptbl { 87 struct cpu_disklabel *at_cdl; 88 u_int at_hdsize; /* size of volume in blocks */ 89 u_int at_nroots; /* # of auxiliary root sectors */ 90 u_int at_nparts; /* # of AHDI partitions */ 91 struct ahdi_part at_parts[AHDI_MAXPARTS]; 92 }; 93 #define at_bblock at_cdl->cd_bblock 94 #define at_label at_cdl->cd_label 95 #define at_bslst at_cdl->cd_bslst 96 #define at_bslend at_cdl->cd_bslend 97 #define at_roots at_cdl->cd_roots 98 #endif /* _KERNEL */ 99 100 #endif /* _MACHINE_AHDILABEL_H_ */ 101