1 /* $NetBSD: ahdilabel.h,v 1.4 2009/10/20 19:10:11 snj 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef _MACHINE_AHDILABEL_H_ 29 #define _MACHINE_AHDILABEL_H_ 30 31 #define AHDI_BSIZE 512 /* AHDI blocksize */ 32 #define AHDI_BBLOCK 0 /* AHDI bootblock (root sector) */ 33 #define AHDI_MAXROOTS (MAXAUXROOTS) /* max. # of AHDI rootsectors */ 34 #define AHDI_MAXPARTS (AHDI_MAXROOTS+3) /* max. # of AHDI partitions */ 35 36 /* 37 * Various `well known' AHDI partition identifiers. 38 */ 39 #define AHDI_MKPID(x,y,z) ( ((u_int32_t)(x) << 16) \ 40 | ((u_int32_t)(y) << 8) \ 41 | ((u_int32_t)(z)) \ 42 ) 43 #define AHDI_PID_XGM AHDI_MKPID('X','G','M') 44 #define AHDI_PID_GEM AHDI_MKPID('G','E','M') 45 #define AHDI_PID_BGM AHDI_MKPID('B','G','M') 46 #define AHDI_PID_RAW AHDI_MKPID('R','A','W') 47 #define AHDI_PID_SWP AHDI_MKPID('S','W','P') 48 #define AHDI_PID_NBD AHDI_MKPID('N','B','D') 49 #define AHDI_PID_NBR AHDI_MKPID('N','B','R') 50 #define AHDI_PID_NBS AHDI_MKPID('N','B','S') 51 #define AHDI_PID_NBU AHDI_MKPID('N','B','U') 52 53 /* 54 * Format of AHDI boot block. 55 */ 56 #define AHDI_MAXRPD 4 /* max. # of partition descriptors */ 57 /* in an AHDI bootblock (aka root) */ 58 #define AHDI_MAXARPD 2 /* max. # of partition descriptors */ 59 /* in an AHDI auxiliary root sector */ 60 struct ahdi_part { 61 u_int8_t ap_flg; /* bit 0 is in-use flag */ 62 u_int8_t ap_id[3]; /* id: GEM, BGM, XGM, UNX, MIX */ 63 u_int32_t ap_st; /* block where partition starts */ 64 u_int32_t ap_size; /* partition size in blocks */ 65 } __attribute__((__packed__)); 66 #define ap_end ap_size /* in the in-core copy, store end instead of size */ 67 68 struct ahdi_root { 69 u_int8_t ar_fill[0x1c2];/* filler, can be boot code */ 70 u_int32_t ar_hdsize; /* size of entire volume in blocks */ 71 struct ahdi_part ar_parts[AHDI_MAXRPD]; /* root partition table */ 72 u_int32_t ar_bslst; /* start of bad-sector list */ 73 u_int32_t ar_bslsize; /* # of blocks in bad-sector list */ 74 u_int16_t ar_checksum; 75 } __attribute__((__packed__)); 76 77 /* 78 * AHDI partition table. 79 */ 80 #ifdef _KERNEL 81 struct ahdi_ptbl { 82 struct cpu_disklabel *at_cdl; 83 u_int at_hdsize; /* size of volume in blocks */ 84 u_int at_nroots; /* # of auxiliary root sectors */ 85 u_int at_nparts; /* # of AHDI partitions */ 86 struct ahdi_part at_parts[AHDI_MAXPARTS]; 87 }; 88 #define at_bblock at_cdl->cd_bblock 89 #define at_label at_cdl->cd_label 90 #define at_bslst at_cdl->cd_bslst 91 #define at_bslend at_cdl->cd_bslend 92 #define at_roots at_cdl->cd_roots 93 #endif /* _KERNEL */ 94 95 #endif /* _MACHINE_AHDILABEL_H_ */ 96