/*      $NetBSD: bootblock.h,v 1.62 2026/01/09 15:43:07 nia Exp $       */

/*-
 * Copyright (c) 2002-2004 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
/*-
 * Copyright (C) 1993   Allen K. Briggs, Chris P. Caputo,
 *                      Michael L. Finch, Bradley A. Grantham, and
 *                      Lawrence A. Kesteloot
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the Alice Group.
 * 4. The names of the Alice Group or any of its members may not be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
/*
 * Copyright (c) 1994, 1999 Christopher G. Demetriou
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Christopher G. Demetriou
 *      for the NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * Copyright (c) 1994 Rolf Grossmann
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Rolf Grossmann.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SYS_BOOTBLOCK_H
#define _SYS_BOOTBLOCK_H

#if !defined(__ASSEMBLER__)
#include <sys/cdefs.h>
#include <sys/endian.h>
#if defined(_KERNEL) || defined(_STANDALONE)
#include <sys/stdint.h>
#else
#include <stdint.h>
#endif
#endif  /* !defined(__ASSEMBLER__) */

/* ------------------------------------------
 * MBR (Master Boot Record) --
 *      definitions for systems that use MBRs
 */

/*
 * Layout of boot records:
 *
 *      Byte range      Use     Description
 *      ----------      ---     -----------
 *
 *      0 - 2           FMP     JMP xxx, NOP
 *      3 - 10          FP      OEM Name
 *
 *      11 - 61         FMP     FAT12/16 BPB
 *                              Whilst not strictly necessary for MBR,
 *                              GRUB reserves this area
 *
 *      11 - 89         P       FAT32 BPB
 *                              (are we ever going to boot off this?)
 *
 *
 *      62 - 217        FMP     Boot code
 *
 *      90 - 217        P       FAT32 boot code
 *
 *      218 - 223       M       Win95b/98/me "drive time"
 *              http://www.geocities.com/thestarman3/asm/mbr/95BMEMBR.htm#MYST
 *                              only changed if all 6 bytes are 0
 *
 *      224 - 436       FMP     boot code (continued)
 *
 *      437 - 439       M       WinNT/2K/XP MBR "boot language"
 *              http://www.geocities.com/thestarman3/asm/mbr/Win2kmbr.htm
 *                              not needed by us
 *
 *      400 - 439       MP      NetBSD: mbr_bootsel
 *
 *      424 - 439       M       NetBSD: bootptn_guid (in GPT PMBR only)
 *
 *      440 - 443       M       WinNT/2K/XP Drive Serial Number (NT DSN)
 *              http://www.geocities.com/thestarman3/asm/mbr/Win2kmbr.htm
 *
 *      444 - 445       FMP     bootcode or unused
 *                              NetBSD: mbr_bootsel_magic
 *
 *      446 - 509       M       partition table
 *
 *      510 - 511       FMP     magic number (0xAA55)
 *
 *      Use:
 *      ----
 *      F       Floppy boot sector
 *      M       Master Boot Record
 *      P       Partition Boot record
 *
 */

/*
 * MBR (Master Boot Record)
 */
#define MBR_BBSECTOR            0       /* MBR relative sector # */
#define MBR_BPB_OFFSET          11      /* offsetof(mbr_sector, mbr_bpb) */
#define MBR_BOOTCODE_OFFSET     90      /* offsetof(mbr_sector, mbr_bootcode) */
#define MBR_BS_OFFSET           400     /* offsetof(mbr_sector, mbr_bootsel) */
#define MBR_BS_OLD_OFFSET       404     /* where mbr_bootsel used to be */
#define MBR_GPT_GUID_OFFSET     424     /* location of partition GUID to boot */
#define MBR_GPT_GUID_DEFAULT            /* default uninitialized GUID */ \
        {0xeee69d04,0x02f4,0x11e0,0x8f,0x5d,{0x00,0xe0,0x81,0x52,0x9a,0x6b}}
#define MBR_DSN_OFFSET          440     /* offsetof(mbr_sector, mbr_dsn) */
#define MBR_BS_MAGIC_OFFSET     444     /* offsetof(mbr_sector, mbr_bootsel_magic) */
#define MBR_PART_OFFSET         446     /* offsetof(mbr_sector, mbr_part[0]) */
#define MBR_MAGIC_OFFSET        510     /* offsetof(mbr_sector, mbr_magic) */
#define MBR_MAGIC               0xaa55  /* MBR magic number */
#define MBR_BS_MAGIC            0xb5e1  /* mbr_bootsel magic number */
#define MBR_PART_COUNT          4       /* Number of partitions in MBR */
#define MBR_BS_PARTNAMESIZE     8       /* Size of name mbr_bootsel nametab */
                                        /* (excluding trailing NUL) */

                /* values for mbr_partition.mbrp_flag */
#define MBR_PFLAG_ACTIVE        0x80    /* The active partition */

                /* values for mbr_partition.mbrp_type */
#define MBR_PTYPE_UNUSED        0x00    /* Unused */
#define MBR_PTYPE_FAT12         0x01    /* 12-bit FAT */
#define MBR_PTYPE_XENIX_ROOT    0x02    /* XENIX / */
#define MBR_PTYPE_XENIX_USR     0x03    /* XENIX /usr */
#define MBR_PTYPE_FAT16S        0x04    /* 16-bit FAT, less than 32M */
#define MBR_PTYPE_EXT           0x05    /* extended partition */
#define MBR_PTYPE_FAT16B        0x06    /* 16-bit FAT, more than 32M */
#define MBR_PTYPE_NTFS          0x07    /* OS/2 HPFS, NTFS, QNX2, Adv. UNIX */
#define MBR_PTYPE_DELL          0x08    /* AIX or os, or etc. */
#define MBR_PTYPE_AIX_BOOT      0x09    /* AIX boot partition or Coherent */
#define MBR_PTYPE_OS2_BOOT      0x0a    /* O/2 boot manager or Coherent swap */
#define MBR_PTYPE_FAT32         0x0b    /* 32-bit FAT */
#define MBR_PTYPE_FAT32L        0x0c    /* 32-bit FAT, LBA-mapped */
#define MBR_PTYPE_7XXX          0x0d    /* 7XXX, LBA-mapped */
#define MBR_PTYPE_FAT16L        0x0e    /* 16-bit FAT, LBA-mapped */
#define MBR_PTYPE_EXT_LBA       0x0f    /* extended partition, LBA-mapped */
#define MBR_PTYPE_OPUS          0x10    /* OPUS */
#define MBR_PTYPE_OS2_DOS12     0x11    /* OS/2 DOS 12-bit FAT */
#define MBR_PTYPE_COMPAQ_DIAG   0x12    /* Compaq diagnostics */
#define MBR_PTYPE_OS2_DOS16S    0x14    /* OS/2 DOS 16-bit FAT <32M */
#define MBR_PTYPE_OS2_DOS16B    0x16    /* OS/2 DOS 16-bit FAT >=32M */
#define MBR_PTYPE_OS2_IFS       0x17    /* OS/2 hidden IFS */
#define MBR_PTYPE_AST_SWAP      0x18    /* AST Windows swapfile */
#define MBR_PTYPE_WILLOWTECH    0x19    /* Willowtech Photon coS */
#define MBR_PTYPE_HID_FAT32     0x1b    /* hidden win95 fat 32 */
#define MBR_PTYPE_HID_FAT32_LBA 0x1c    /* hidden win95 fat 32 lba */
#define MBR_PTYPE_HID_FAT16_LBA 0x1d    /* hidden win95 fat 16 lba */
#define MBR_PTYPE_WILLOWSOFT    0x20    /* Willowsoft OFS1 */
#define MBR_PTYPE_RESERVED_x21  0x21    /* reserved */
#define MBR_PTYPE_RESERVED_x23  0x23    /* reserved */
#define MBR_PTYPE_RESERVED_x24  0x24    /* NEC DOS */
#define MBR_PTYPE_RESERVED_x26  0x26    /* reserved */
#define MBR_PTYPE_RESERVED_x31  0x31    /* reserved */
#define MBR_PTYPE_NOS           0x32    /* Alien Internet Services NOS */
#define MBR_PTYPE_RESERVED_x33  0x33    /* reserved */
#define MBR_PTYPE_RESERVED_x34  0x34    /* reserved */
#define MBR_PTYPE_OS2_JFS       0x35    /* JFS on OS2 */
#define MBR_PTYPE_RESERVED_x36  0x36    /* reserved */
#define MBR_PTYPE_THEOS         0x38    /* Theos */
#define MBR_PTYPE_PLAN9         0x39    /* Plan 9, or Theos spanned */
#define MBR_PTYPE_THEOS_4GB     0x3a    /* Theos ver 4 4gb partition */
#define MBR_PTYPE_THEOS_EXT     0x3b    /* Theos ve 4 extended partition */
#define MBR_PTYPE_PMRECOVERY    0x3c    /* PartitionMagic recovery */
#define MBR_PTYPE_HID_NETWARE   0x3d    /* Hidden Netware */
#define MBR_PTYPE_VENIX         0x40    /* VENIX 286 or LynxOS */
#define MBR_PTYPE_PREP          0x41    /* PReP */
#define MBR_PTYPE_DRDOS_LSWAP   0x42    /* linux swap sharing DRDOS disk */
#define MBR_PTYPE_DRDOS_LINUX   0x43    /* linux sharing DRDOS disk */
#define MBR_PTYPE_GOBACK        0x44    /* GoBack change utility */
#define MBR_PTYPE_BOOT_US       0x45    /* Boot US Boot manager */
#define MBR_PTYPE_EUMEL_x46     0x46    /* EUMEL/Elan or Ergos 3 */
#define MBR_PTYPE_EUMEL_x47     0x47    /* EUMEL/Elan or Ergos 3 */
#define MBR_PTYPE_EUMEL_x48     0x48    /* EUMEL/Elan or Ergos 3 */
#define MBR_PTYPE_ALFS_THIN     0x4a    /* ALFX/THIN filesystem for DOS */
#define MBR_PTYPE_OBERON        0x4c    /* Oberon partition */
#define MBR_PTYPE_QNX4X         0x4d    /* QNX4.x */
#define MBR_PTYPE_QNX4X_2       0x4e    /* QNX4.x 2nd part */
#define MBR_PTYPE_QNX4X_3       0x4f    /* QNX4.x 3rd part */
#define MBR_PTYPE_DM            0x50    /* DM (disk manager) */
#define MBR_PTYPE_DM6_AUX1      0x51    /* DM6 Aux1 (or Novell) */
#define MBR_PTYPE_CPM           0x52    /* CP/M or Microport SysV/AT */
#define MBR_PTYPE_DM6_AUX3      0x53    /* DM6 Aux3 */
#define MBR_PTYPE_DM6_DDO       0x54    /* DM6 DDO */
#define MBR_PTYPE_EZDRIVE       0x55    /* EZ-Drive (disk manager) */
#define MBR_PTYPE_GOLDEN_BOW    0x56    /* Golden Bow (disk manager) */
#define MBR_PTYPE_DRIVE_PRO     0x57    /* Drive PRO */
#define MBR_PTYPE_PRIAM_EDISK   0x5c    /* Priam Edisk (disk manager) */
#define MBR_PTYPE_SPEEDSTOR     0x61    /* SpeedStor */
#define MBR_PTYPE_HURD          0x63    /* GNU HURD or Mach or Sys V/386 */
#define MBR_PTYPE_NOVELL_2XX    0x64    /* Novell Netware 2.xx or Speedstore */
#define MBR_PTYPE_NOVELL_3XX    0x65    /* Novell Netware 3.xx */
#define MBR_PTYPE_NOVELL_386    0x66    /* Novell 386 Netware */
#define MBR_PTYPE_NOVELL_x67    0x67    /* Novell */
#define MBR_PTYPE_NOVELL_x68    0x68    /* Novell */
#define MBR_PTYPE_NOVELL_x69    0x69    /* Novell */
#define MBR_PTYPE_DISKSECURE    0x70    /* DiskSecure Multi-Boot */
#define MBR_PTYPE_RESERVED_x71  0x71    /* reserved */
#define MBR_PTYPE_RESERVED_x73  0x73    /* reserved */
#define MBR_PTYPE_RESERVED_x74  0x74    /* reserved */
#define MBR_PTYPE_PCIX          0x75    /* PC/IX */
#define MBR_PTYPE_RESERVED_x76  0x76    /* reserved */
#define MBR_PTYPE_M2FS_M2CS     0x77    /* M2FS/M2CS partition */
#define MBR_PTYPE_XOSL_FS       0x78    /* XOSL boot loader filesystem */
#define MBR_PTYPE_MINIX_14A     0x80    /* MINIX until 1.4a */
#define MBR_PTYPE_MINIX_14B     0x81    /* MINIX since 1.4b */
#define MBR_PTYPE_LNXSWAP       0x82    /* Linux swap or Solaris */
#define MBR_PTYPE_LNXEXT2       0x83    /* Linux native */
#define MBR_PTYPE_OS2_C         0x84    /* OS/2 hidden C: drive */
#define MBR_PTYPE_EXT_LNX       0x85    /* Linux extended partition */
#define MBR_PTYPE_NTFATVOL      0x86    /* NT FAT volume set */
#define MBR_PTYPE_NTFSVOL       0x87    /* NTFS volume set or HPFS mirrored */
#define MBR_PTYPE_LNX_KERNEL    0x8a    /* Linux Kernel AiR-BOOT partition */
#define MBR_PTYPE_FT_FAT32      0x8b    /* Legacy Fault tolerant FAT32 */
#define MBR_PTYPE_FT_FAT32_EXT  0x8c    /* Legacy Fault tolerant FAT32 ext */
#define MBR_PTYPE_HID_FR_FD_12  0x8d    /* Hidden free FDISK FAT12 */
#define MBR_PTYPE_LNX_LVM       0x8e    /* Linux Logical Volume Manager */
#define MBR_PTYPE_HID_FR_FD_16  0x90    /* Hidden free FDISK FAT16 */
#define MBR_PTYPE_HID_FR_FD_EXT 0x91    /* Hidden free FDISK DOS EXT */
#define MBR_PTYPE_HID_FR_FD_16B 0x92    /* Hidden free FDISK FAT16 Big */
#define MBR_PTYPE_AMOEBA_FS     0x93    /* Amoeba filesystem */
#define MBR_PTYPE_AMOEBA_BAD    0x94    /* Amoeba bad block table */
#define MBR_PTYPE_MIT_EXOPC     0x95    /* MIT EXOPC native partitions */
#define MBR_PTYPE_HID_FR_FD_32  0x97    /* Hidden free FDISK FAT32 */
#define MBR_PTYPE_DATALIGHT     0x98    /* Datalight ROM-DOS Super-Boot */
#define MBR_PTYPE_MYLEX         0x99    /* Mylex EISA SCSI */
#define MBR_PTYPE_HID_FR_FD_16L 0x9a    /* Hidden free FDISK FAT16 LBA */
#define MBR_PTYPE_HID_FR_FD_EXL 0x9b    /* Hidden free FDISK EXT LBA */
#define MBR_PTYPE_BSDI          0x9f    /* BSDI? */
#define MBR_PTYPE_IBM_HIB       0xa0    /* IBM Thinkpad hibernation */
#define MBR_PTYPE_HP_VOL_xA1    0xa1    /* HP Volume expansion (SpeedStor) */
#define MBR_PTYPE_HP_VOL_xA3    0xa3    /* HP Volume expansion (SpeedStor) */
#define MBR_PTYPE_HP_VOL_xA4    0xa4    /* HP Volume expansion (SpeedStor) */
#define MBR_PTYPE_386BSD        0xa5    /* 386BSD partition type */
#define MBR_PTYPE_OPENBSD       0xa6    /* OpenBSD partition type */
#define MBR_PTYPE_NEXTSTEP_486  0xa7    /* NeXTSTEP 486 */
#define MBR_PTYPE_APPLE_UFS     0xa8    /* Apple UFS */
#define MBR_PTYPE_NETBSD        0xa9    /* NetBSD partition type */
#define MBR_PTYPE_OLIVETTI      0xaa    /* Olivetty Fat12 1.44MB Service part */
#define MBR_PTYPE_APPLE_BOOT    0xab    /* Apple Boot */
#define MBR_PTYPE_SHAG_OS       0xae    /* SHAG OS filesystem */
#define MBR_PTYPE_APPLE_HFS     0xaf    /* Apple HFS */
#define MBR_PTYPE_BOOTSTAR_DUM  0xb0    /* BootStar Dummy */
#define MBR_PTYPE_RESERVED_xB1  0xb1    /* reserved */
#define MBR_PTYPE_RESERVED_xB3  0xb3    /* reserved */
#define MBR_PTYPE_RESERVED_xB4  0xb4    /* reserved */
#define MBR_PTYPE_RESERVED_xB6  0xb6    /* reserved */
#define MBR_PTYPE_BSDI_386      0xb7    /* BSDI BSD/386 filesystem */
#define MBR_PTYPE_BSDI_SWAP     0xb8    /* BSDI BSD/386 swap */
#define MBR_PTYPE_BOOT_WIZARD   0xbb    /* Boot Wizard Hidden */
#define MBR_PTYPE_SOLARIS_8     0xbe    /* Solaris 8 partition type */
#define MBR_PTYPE_SOLARIS       0xbf    /* Solaris partition type */
#define MBR_PTYPE_CTOS          0xc0    /* CTOS */
#define MBR_PTYPE_DRDOS_FAT12   0xc1    /* DRDOS/sec (FAT-12) */
#define MBR_PTYPE_HID_LNX       0xc2    /* Hidden Linux */
#define MBR_PTYPE_HID_LNX_SWAP  0xc3    /* Hidden Linux swap */
#define MBR_PTYPE_DRDOS_FAT16S  0xc4    /* DRDOS/sec (FAT-16, < 32M) */
#define MBR_PTYPE_DRDOS_EXT     0xc5    /* DRDOS/sec (EXT) */
#define MBR_PTYPE_DRDOS_FAT16B  0xc6    /* DRDOS/sec (FAT-16, >= 32M) */
#define MBR_PTYPE_SYRINX        0xc7    /* Syrinx (Cyrnix?) or HPFS disabled */
#define MBR_PTYPE_DRDOS_8_xC8   0xc8    /* Reserved for DR-DOS 8.0+ */
#define MBR_PTYPE_DRDOS_8_xC9   0xc9    /* Reserved for DR-DOS 8.0+ */
#define MBR_PTYPE_DRDOS_8_xCA   0xca    /* Reserved for DR-DOS 8.0+ */
#define MBR_PTYPE_DRDOS_74_CHS  0xcb    /* DR-DOS 7.04+ Secured FAT32 CHS */
#define MBR_PTYPE_DRDOS_74_LBA  0xcc    /* DR-DOS 7.04+ Secured FAT32 LBA */
#define MBR_PTYPE_CTOS_MEMDUMP  0xcd    /* CTOS Memdump */
#define MBR_PTYPE_DRDOS_74_16X  0xce    /* DR-DOS 7.04+ FAT16X LBA */
#define MBR_PTYPE_DRDOS_74_EXT  0xcf    /* DR-DOS 7.04+ EXT LBA */
#define MBR_PTYPE_REAL32        0xd0    /* REAL/32 secure big partition */
#define MBR_PTYPE_MDOS_FAT12    0xd1    /* Old Multiuser DOS FAT12 */
#define MBR_PTYPE_MDOS_FAT16S   0xd4    /* Old Multiuser DOS FAT16 Small */
#define MBR_PTYPE_MDOS_EXT      0xd5    /* Old Multiuser DOS Extended */
#define MBR_PTYPE_MDOS_FAT16B   0xd6    /* Old Multiuser DOS FAT16 Big */
#define MBR_PTYPE_CPM_86        0xd8    /* CP/M 86 */
#define MBR_PTYPE_CONCURRENT    0xdb    /* CP/M or Concurrent CP/M */
#define MBR_PTYPE_HID_CTOS_MEM  0xdd    /* Hidden CTOS Memdump */
#define MBR_PTYPE_DELL_UTIL     0xde    /* Dell PowerEdge Server utilities */
#define MBR_PTYPE_DGUX_VIRTUAL  0xdf    /* DG/UX virtual disk manager */
#define MBR_PTYPE_STMICROELEC   0xe0    /* STMicroelectronics ST AVFS */
#define MBR_PTYPE_DOS_ACCESS    0xe1    /* DOS access or SpeedStor 12-bit */
#define MBR_PTYPE_STORDIM       0xe3    /* DOS R/O or Storage Dimensions */
#define MBR_PTYPE_SPEEDSTOR_16S 0xe4    /* SpeedStor 16-bit FAT < 1024 cyl. */
#define MBR_PTYPE_RESERVED_xE5  0xe5    /* reserved */
#define MBR_PTYPE_RESERVED_xE6  0xe6    /* reserved */
#define MBR_PTYPE_BEOS          0xeb    /* BeOS */
#define MBR_PTYPE_PMBR          0xee    /* GPT Protective MBR */
#define MBR_PTYPE_EFI           0xef    /* EFI system partition */
#define MBR_PTYPE_LNX_PA_RISC   0xf0    /* Linux PA-RISC boot loader */
#define MBR_PTYPE_SPEEDSTOR_X   0xf1    /* SpeedStor or Storage Dimensions */
#define MBR_PTYPE_DOS33_SEC     0xf2    /* DOS 3.3+ Secondary */
#define MBR_PTYPE_RESERVED_xF3  0xf3    /* reserved */
#define MBR_PTYPE_SPEEDSTOR_L   0xf4    /* SpeedStor large partition */
#define MBR_PTYPE_PROLOGUE      0xf5    /* Prologue multi-volumen partition */
#define MBR_PTYPE_RESERVED_xF6  0xf6    /* reserved */
#define MBR_PTYPE_PCACHE        0xf9    /* pCache: ext2/ext3 persistent cache */
#define MBR_PTYPE_BOCHS         0xfa    /* Bochs x86 emulator */
#define MBR_PTYPE_VMWARE        0xfb    /* VMware File System */
#define MBR_PTYPE_VMWARE_SWAP   0xfc    /* VMware Swap */
#define MBR_PTYPE_LNX_RAID      0xfd    /* Linux RAID partition persistent sb */
#define MBR_PTYPE_LANSTEP       0xfe    /* LANstep or IBM PS/2 IML */
#define MBR_PTYPE_XENIX_BAD     0xff    /* Xenix Bad Block Table */

#ifdef MBRPTYPENAMES
static const struct mbr_ptype {
        int id;
        const char *name;
} mbr_ptypes[] = {
        { MBR_PTYPE_UNUSED, "<UNUSED>" },
        { MBR_PTYPE_FAT12, "Primary DOS with 12 bit FAT" },
        { MBR_PTYPE_XENIX_ROOT, "XENIX / filesystem" },
        { MBR_PTYPE_XENIX_USR, "XENIX /usr filesystem" },
        { MBR_PTYPE_FAT16S, "Primary DOS with 16 bit FAT <32M" },
        { MBR_PTYPE_EXT, "Extended partition" },
        { MBR_PTYPE_FAT16B, "Primary 'big' DOS, 16-bit FAT (> 32MB)" },
        { MBR_PTYPE_NTFS, "NTFS, OS/2 HPFS, QNX2 or Advanced UNIX" },
        { MBR_PTYPE_DELL, "AIX filesystem or OS/2 (thru v1.3) or DELL "
                          "multiple drives or Commodore DOS or SplitDrive" },
        { MBR_PTYPE_AIX_BOOT, "AIX boot partition or Coherent" },
        { MBR_PTYPE_OS2_BOOT, "OS/2 Boot Manager or Coherent swap or OPUS" },
        { MBR_PTYPE_FAT32, "Primary DOS with 32 bit FAT" },
        { MBR_PTYPE_FAT32L, "Primary DOS with 32 bit FAT - LBA" },
        { MBR_PTYPE_7XXX, "Type 7??? - LBA" },
        { MBR_PTYPE_FAT16L, "DOS (16-bit FAT) - LBA" },
        { MBR_PTYPE_EXT_LBA, "Ext. partition - LBA" },
        { MBR_PTYPE_OPUS, "OPUS" },
        { MBR_PTYPE_OS2_DOS12, "OS/2 BM: hidden DOS 12-bit FAT" },
        { MBR_PTYPE_COMPAQ_DIAG, "Compaq diagnostics" },
        { MBR_PTYPE_OS2_DOS16S, "OS/2 BM: hidden DOS 16-bit FAT <32M "
                                "or Novell DOS 7.0 bug" },
        { MBR_PTYPE_OS2_DOS16B, "OS/2 BM: hidden DOS 16-bit FAT >=32M" },
        { MBR_PTYPE_OS2_IFS, "OS/2 BM: hidden IFS" },
        { MBR_PTYPE_AST_SWAP, "AST Windows swapfile" },
        { MBR_PTYPE_WILLOWTECH, "Willowtech Photon coS" },
        { MBR_PTYPE_HID_FAT32, "hidden Windows/95 FAT32" },
        { MBR_PTYPE_HID_FAT32_LBA, "hidden Windows/95 FAT32 LBA" },
        { MBR_PTYPE_HID_FAT16_LBA, "hidden Windows/95 FAT16 LBA" },
        { MBR_PTYPE_WILLOWSOFT, "Willowsoft OFS1" },
        { MBR_PTYPE_RESERVED_x21, "reserved" },
        { MBR_PTYPE_RESERVED_x23, "reserved" },
        { MBR_PTYPE_RESERVED_x24, "NEC DOS"},
        { MBR_PTYPE_RESERVED_x26, "reserved" },
        { MBR_PTYPE_RESERVED_x31, "reserved" },
        { MBR_PTYPE_NOS, "Alien Internet Services NOS" },
        { MBR_PTYPE_RESERVED_x33, "reserved" },
        { MBR_PTYPE_RESERVED_x34, "reserved" },
        { MBR_PTYPE_OS2_JFS, "JFS on OS2" },
        { MBR_PTYPE_RESERVED_x36, "reserved" },
        { MBR_PTYPE_THEOS, "Theos" },
        { MBR_PTYPE_PLAN9, "Plan 9" },
        { MBR_PTYPE_PLAN9, "Plan 9, or Theos spanned" },
        { MBR_PTYPE_THEOS_4GB,  "Theos ver 4 4gb partition" },
        { MBR_PTYPE_THEOS_EXT,  "Theos ve 4 extended partition" },
        { MBR_PTYPE_PMRECOVERY, "PartitionMagic recovery" },
        { MBR_PTYPE_HID_NETWARE, "Hidden Netware" },
        { MBR_PTYPE_VENIX, "VENIX 286 or LynxOS" },
        { MBR_PTYPE_PREP, "Linux/MINIX (sharing disk with DRDOS) "
                          "or Personal RISC boot" },
        { MBR_PTYPE_DRDOS_LSWAP, "SFS or Linux swap "
                                 "(sharing disk with DRDOS)" },
        { MBR_PTYPE_DRDOS_LINUX, "Linux native (sharing disk with DRDOS)" },
        { MBR_PTYPE_GOBACK, "GoBack change utility" },
        { MBR_PTYPE_BOOT_US, "Boot US Boot manager" },
        { MBR_PTYPE_EUMEL_x46, "EUMEL/Elan or Ergos 3" },
        { MBR_PTYPE_EUMEL_x47, "EUMEL/Elan or Ergos 3" },
        { MBR_PTYPE_EUMEL_x48, "EUMEL/Elan or Ergos 3" },
        { MBR_PTYPE_ALFS_THIN, "ALFX/THIN filesystem for DOS" },
        { MBR_PTYPE_OBERON, "Oberon partition" },
        { MBR_PTYPE_QNX4X, "QNX4.x" },
        { MBR_PTYPE_QNX4X_2, "QNX4.x 2nd part" },
        { MBR_PTYPE_QNX4X_3, "QNX4.x 3rd part" },
        { MBR_PTYPE_DM, "DM (disk manager)" },
        { MBR_PTYPE_DM6_AUX1, "DM6 Aux1 (or Novell)" },
        { MBR_PTYPE_CPM, "CP/M or Microport SysV/AT" },
        { MBR_PTYPE_DM6_AUX3, "DM6 Aux3" },
        { MBR_PTYPE_DM6_DDO, "DM6 DDO" },
        { MBR_PTYPE_EZDRIVE, "EZ-Drive (disk manager)" },
        { MBR_PTYPE_GOLDEN_BOW, "Golden Bow (disk manager)" },
        { MBR_PTYPE_DRIVE_PRO, "Drive PRO" },
        { MBR_PTYPE_PRIAM_EDISK, "Priam Edisk (disk manager)" },
        { MBR_PTYPE_SPEEDSTOR, "SpeedStor" },
        { MBR_PTYPE_HURD, "GNU HURD or Mach or Sys V/386 "
                          "(such as ISC UNIX) or MtXinu" },
        { MBR_PTYPE_NOVELL_2XX, "Novell Netware 2.xx or Speedstore" },
        { MBR_PTYPE_NOVELL_3XX, "Novell Netware 3.xx" },
        { MBR_PTYPE_NOVELL_386, "Novell 386 Netware" },
        { MBR_PTYPE_NOVELL_x67, "Novell" },
        { MBR_PTYPE_NOVELL_x68, "Novell" },
        { MBR_PTYPE_NOVELL_x69, "Novell" },
        { MBR_PTYPE_DISKSECURE, "DiskSecure Multi-Boot" },
        { MBR_PTYPE_RESERVED_x71, "reserved" },
        { MBR_PTYPE_RESERVED_x73, "reserved" },
        { MBR_PTYPE_RESERVED_x74, "reserved" },
        { MBR_PTYPE_PCIX, "PC/IX" },
        { MBR_PTYPE_RESERVED_x76, "reserved" },
        { MBR_PTYPE_M2FS_M2CS,  "M2FS/M2CS partition" },
        { MBR_PTYPE_XOSL_FS, "XOSL boot loader filesystem" },
        { MBR_PTYPE_MINIX_14A, "MINIX until 1.4a" },
        { MBR_PTYPE_MINIX_14B, "MINIX since 1.4b, early Linux, Mitac dmgr" },
        { MBR_PTYPE_LNXSWAP, "Linux swap or Prime or Solaris" },
        { MBR_PTYPE_LNXEXT2, "Linux native" },
        { MBR_PTYPE_OS2_C, "OS/2 hidden C: drive" },
        { MBR_PTYPE_EXT_LNX, "Linux extended" },
        { MBR_PTYPE_NTFATVOL, "NT FAT volume set" },
        { MBR_PTYPE_NTFSVOL, "NTFS volume set or HPFS mirrored" },
        { MBR_PTYPE_LNX_KERNEL, "Linux Kernel AiR-BOOT partition" },
        { MBR_PTYPE_FT_FAT32, "Legacy Fault tolerant FAT32" },
        { MBR_PTYPE_FT_FAT32_EXT, "Legacy Fault tolerant FAT32 ext" },
        { MBR_PTYPE_HID_FR_FD_12, "Hidden free FDISK FAT12" },
        { MBR_PTYPE_LNX_LVM, "Linux Logical Volume Manager" },
        { MBR_PTYPE_HID_FR_FD_16, "Hidden free FDISK FAT16" },
        { MBR_PTYPE_HID_FR_FD_EXT, "Hidden free FDISK DOS EXT" },
        { MBR_PTYPE_HID_FR_FD_16L, "Hidden free FDISK FAT16 Large" },
        { MBR_PTYPE_AMOEBA_FS, "Amoeba filesystem" },
        { MBR_PTYPE_AMOEBA_BAD, "Amoeba bad block table" },
        { MBR_PTYPE_MIT_EXOPC, "MIT EXOPC native partitions" },
        { MBR_PTYPE_HID_FR_FD_32, "Hidden free FDISK FAT32" },
        { MBR_PTYPE_DATALIGHT, "Datalight ROM-DOS Super-Boot" },
        { MBR_PTYPE_MYLEX, "Mylex EISA SCSI" },
        { MBR_PTYPE_HID_FR_FD_16L, "Hidden free FDISK FAT16 LBA" },
        { MBR_PTYPE_HID_FR_FD_EXL, "Hidden free FDISK EXT LBA" },
        { MBR_PTYPE_BSDI, "BSDI?" },
        { MBR_PTYPE_IBM_HIB, "IBM Thinkpad hibernation" },
        { MBR_PTYPE_HP_VOL_xA1, "HP Volume expansion (SpeedStor)" },
        { MBR_PTYPE_HP_VOL_xA3, "HP Volume expansion (SpeedStor)" },
        { MBR_PTYPE_HP_VOL_xA4, "HP Volume expansion (SpeedStor)" },
        { MBR_PTYPE_386BSD, "FreeBSD or 386BSD or old NetBSD" },
        { MBR_PTYPE_OPENBSD, "OpenBSD" },
        { MBR_PTYPE_NEXTSTEP_486, "NeXTSTEP 486" },
        { MBR_PTYPE_APPLE_UFS, "Apple UFS" },
        { MBR_PTYPE_NETBSD, "NetBSD" },
        { MBR_PTYPE_OLIVETTI, "Olivetty Fat12 1.44MB Service part" },
        { MBR_PTYPE_SHAG_OS, "SHAG OS filesystem" },
        { MBR_PTYPE_BOOTSTAR_DUM, "BootStar Dummy" },
        { MBR_PTYPE_BOOT_WIZARD, "Boot Wizard Hidden" },
        { MBR_PTYPE_APPLE_BOOT, "Apple Boot" },
        { MBR_PTYPE_APPLE_HFS, "Apple HFS" },
        { MBR_PTYPE_RESERVED_xB6, "reserved" },
        { MBR_PTYPE_RESERVED_xB6, "reserved" },
        { MBR_PTYPE_RESERVED_xB6, "reserved" },
        { MBR_PTYPE_RESERVED_xB6, "reserved" },
        { MBR_PTYPE_BSDI_386, "BSDI BSD/386 filesystem" },
        { MBR_PTYPE_BSDI_SWAP, "BSDI BSD/386 swap" },
        { MBR_PTYPE_SOLARIS_8, "Solaris 8 boot partition" },
        { MBR_PTYPE_SOLARIS, "Solaris boot partition" },
        { MBR_PTYPE_CTOS, "CTOS" },
        { MBR_PTYPE_DRDOS_FAT12, "DRDOS/sec (FAT-12)" },
        { MBR_PTYPE_HID_LNX, "Hidden Linux" },
        { MBR_PTYPE_HID_LNX_SWAP, "Hidden Linux Swap" },
        { MBR_PTYPE_DRDOS_FAT16S, "DRDOS/sec (FAT-16, < 32M)" },
        { MBR_PTYPE_DRDOS_EXT, "DRDOS/sec (EXT)" },
        { MBR_PTYPE_DRDOS_FAT16B, "DRDOS/sec (FAT-16, >= 32M)" },
        { MBR_PTYPE_SYRINX, "Syrinx (Cyrnix?) or HPFS disabled" },
        { MBR_PTYPE_DRDOS_8_xC8, "Reserved for DR-DOS 8.0+" },
        { MBR_PTYPE_DRDOS_8_xC9, "Reserved for DR-DOS 8.0+" },
        { MBR_PTYPE_DRDOS_8_xCA, "Reserved for DR-DOS 8.0+" },
        { MBR_PTYPE_DRDOS_74_CHS, "DR-DOS 7.04+ Secured FAT32 CHS" },
        { MBR_PTYPE_DRDOS_74_LBA, "DR-DOS 7.04+ Secured FAT32 LBA" },
        { MBR_PTYPE_CTOS_MEMDUMP, "CTOS Memdump" },
        { MBR_PTYPE_DRDOS_74_16X, "DR-DOS 7.04+ FAT16X LBA" },
        { MBR_PTYPE_DRDOS_74_EXT, "DR-DOS 7.04+ EXT LBA" },
        { MBR_PTYPE_REAL32, "REAL/32 secure big partition" },
        { MBR_PTYPE_MDOS_FAT12, "Old Multiuser DOS FAT12" },
        { MBR_PTYPE_MDOS_FAT16S, "Old Multiuser DOS FAT16 Small" },
        { MBR_PTYPE_MDOS_EXT, "Old Multiuser DOS Extended" },
        { MBR_PTYPE_MDOS_FAT16B, "Old Multiuser DOS FAT16 Big" },
        { MBR_PTYPE_CPM_86, "CP/M 86" },
        { MBR_PTYPE_CONCURRENT, "CP/M or Concurrent CP/M or Concurrent DOS "
                                "or CTOS" },
        { MBR_PTYPE_HID_CTOS_MEM, "Hidden CTOS Memdump" },
        { MBR_PTYPE_DELL_UTIL, "Dell PowerEdge Server utilities" },
        { MBR_PTYPE_DGUX_VIRTUAL, "DG/UX virtual disk manager" },
        { MBR_PTYPE_STMICROELEC, "STMicroelectronics ST AVFS" },
        { MBR_PTYPE_DOS_ACCESS, "DOS access or SpeedStor 12-bit FAT "
                                "extended partition" },
        { MBR_PTYPE_STORDIM, "DOS R/O or SpeedStor or Storage Dimensions" },
        { MBR_PTYPE_SPEEDSTOR_16S, "SpeedStor 16-bit FAT extended partition "
                                   "< 1024 cyl." },
        { MBR_PTYPE_RESERVED_xE5, "reserved" },
        { MBR_PTYPE_RESERVED_xE6, "reserved" },
        { MBR_PTYPE_BEOS, "BeOS" },
        { MBR_PTYPE_PMBR, "GPT Protective MBR" },
        { MBR_PTYPE_EFI, "EFI system partition" },
        { MBR_PTYPE_LNX_PA_RISC, "Linux PA-RISC boot loader" },
        { MBR_PTYPE_SPEEDSTOR_X, "SpeedStor or Storage Dimensions" },
        { MBR_PTYPE_DOS33_SEC, "DOS 3.3+ Secondary" },
        { MBR_PTYPE_RESERVED_xF3, "reserved" },
        { MBR_PTYPE_SPEEDSTOR_L, "SpeedStor large partition or "
                                 "Storage Dimensions" },
        { MBR_PTYPE_PROLOGUE, "Prologue multi-volumen partition" },
        { MBR_PTYPE_RESERVED_xF6, "reserved" },
        { MBR_PTYPE_PCACHE, "pCache: ext2/ext3 persistent cache" },
        { MBR_PTYPE_BOCHS, "Bochs x86 emulator" },
        { MBR_PTYPE_VMWARE, "VMware File System" },
        { MBR_PTYPE_VMWARE_SWAP, "VMware Swap" },
        { MBR_PTYPE_LNX_RAID, "Linux RAID partition persistent sb" },
        { MBR_PTYPE_LANSTEP, "SpeedStor >1024 cyl. or LANstep "
                             "or IBM PS/2 IML" },
        { MBR_PTYPE_XENIX_BAD, "Xenix Bad Block Table" },
};
#endif

#define MBR_PSECT(s)            ((s) & 0x3f)
#define MBR_PCYL(c, s)          ((c) + (((s) & 0xc0) << 2))

#define MBR_IS_EXTENDED(x)      ((x) == MBR_PTYPE_EXT || \
                                 (x) == MBR_PTYPE_EXT_LBA || \
                                 (x) == MBR_PTYPE_EXT_LNX)

                /* values for mbr_bootsel.mbrbs_flags */
#define MBR_BS_ACTIVE   0x01    /* Bootselector active (or code present) */
#define MBR_BS_EXTINT13 0x02    /* Set by fdisk if LBA needed (deprecated) */
#define MBR_BS_READ_LBA 0x04    /* Force LBA reads (deprecated) */
#define MBR_BS_EXTLBA   0x08    /* Extended ptn capable (LBA reads) */
#define MBR_BS_ASCII    0x10    /* Bootselect code needs ascii key code */
/* This is always set, the bootsel is located using the magic number...  */
#define MBR_BS_NEWMBR   0x80    /* New bootsel at offset 440 */

#if !defined(__ASSEMBLER__)                                     /* { */

/*
 * (x86) BIOS Parameter Block for FAT12
 */
struct mbr_bpbFAT12 {
        uint16_t        bpbBytesPerSec; /* bytes per sector */
        uint8_t         bpbSecPerClust; /* sectors per cluster */
        uint16_t        bpbResSectors;  /* number of reserved sectors */
        uint8_t         bpbFATs;        /* number of FATs */
        uint16_t        bpbRootDirEnts; /* number of root directory entries */
        uint16_t        bpbSectors;     /* total number of sectors */
        uint8_t         bpbMedia;       /* media descriptor */
        uint16_t        bpbFATsecs;     /* number of sectors per FAT */
        uint16_t        bpbSecPerTrack; /* sectors per track */
        uint16_t        bpbHeads;       /* number of heads */
        uint16_t        bpbHiddenSecs;  /* # of hidden sectors */
} __packed;

/*
 * (x86) BIOS Parameter Block for FAT16
 */
struct mbr_bpbFAT16 {
        uint16_t        bpbBytesPerSec; /* bytes per sector */
        uint8_t         bpbSecPerClust; /* sectors per cluster */
        uint16_t        bpbResSectors;  /* number of reserved sectors */
        uint8_t         bpbFATs;        /* number of FATs */
        uint16_t        bpbRootDirEnts; /* number of root directory entries */
        uint16_t        bpbSectors;     /* total number of sectors */
        uint8_t         bpbMedia;       /* media descriptor */
        uint16_t        bpbFATsecs;     /* number of sectors per FAT */
        uint16_t        bpbSecPerTrack; /* sectors per track */
        uint16_t        bpbHeads;       /* number of heads */
        uint32_t        bpbHiddenSecs;  /* # of hidden sectors */
        uint32_t        bpbHugeSectors; /* # of sectors if bpbSectors == 0 */
        uint8_t         bsDrvNum;       /* Int 0x13 drive number (e.g. 0x80) */
        uint8_t         bsReserved1;    /* Reserved; set to 0 */
        uint8_t         bsBootSig;      /* 0x29 if next 3 fields are present */
        uint8_t         bsVolID[4];     /* Volume serial number */
        uint8_t         bsVolLab[11];   /* Volume label */
        uint8_t         bsFileSysType[8];
                                        /* "FAT12   ", "FAT16   ", "FAT     " */
} __packed;

/*
 * (x86) BIOS Parameter Block for FAT32
 */
struct mbr_bpbFAT32 {
        uint16_t        bpbBytesPerSec; /* bytes per sector */
        uint8_t         bpbSecPerClust; /* sectors per cluster */
        uint16_t        bpbResSectors;  /* number of reserved sectors */
        uint8_t         bpbFATs;        /* number of FATs */
        uint16_t        bpbRootDirEnts; /* number of root directory entries */
        uint16_t        bpbSectors;     /* total number of sectors */
        uint8_t         bpbMedia;       /* media descriptor */
        uint16_t        bpbFATsecs;     /* number of sectors per FAT */
        uint16_t        bpbSecPerTrack; /* sectors per track */
        uint16_t        bpbHeads;       /* number of heads */
        uint32_t        bpbHiddenSecs;  /* # of hidden sectors */
        uint32_t        bpbHugeSectors; /* # of sectors if bpbSectors == 0 */
        uint32_t        bpbBigFATsecs;  /* like bpbFATsecs for FAT32 */
        uint16_t        bpbExtFlags;    /* extended flags: */
#define MBR_FAT32_FATNUM        0x0F    /*   mask for numbering active FAT */
#define MBR_FAT32_FATMIRROR     0x80    /*   FAT is mirrored (as previously) */
        uint16_t        bpbFSVers;      /* filesystem version */
#define MBR_FAT32_FSVERS        0       /*   currently only 0 is understood */
        uint32_t        bpbRootClust;   /* start cluster for root directory */
        uint16_t        bpbFSInfo;      /* filesystem info structure sector */
        uint16_t        bpbBackup;      /* backup boot sector */
        uint8_t         bsReserved[12]; /* Reserved for future expansion */
        uint8_t         bsDrvNum;       /* Int 0x13 drive number (e.g. 0x80) */
        uint8_t         bsReserved1;    /* Reserved; set to 0 */
        uint8_t         bsBootSig;      /* 0x29 if next 3 fields are present */
        uint8_t         bsVolID[4];     /* Volume serial number */
        uint8_t         bsVolLab[11];   /* Volume label */
        uint8_t         bsFileSysType[8]; /* "FAT32   " */
} __packed;

/*
 * (x86) MBR boot selector
 */
struct mbr_bootsel {
        uint8_t         mbrbs_defkey;
        uint8_t         mbrbs_flags;
        uint16_t        mbrbs_timeo;
        char            mbrbs_nametab[MBR_PART_COUNT][MBR_BS_PARTNAMESIZE + 1];
} __packed;

/*
 * MBR partition
 */
struct mbr_partition {
        uint8_t         mbrp_flag;      /* MBR partition flags */
        uint8_t         mbrp_shd;       /* Starting head */
        uint8_t         mbrp_ssect;     /* Starting sector */
        uint8_t         mbrp_scyl;      /* Starting cylinder */
        uint8_t         mbrp_type;      /* Partition type (see below) */
        uint8_t         mbrp_ehd;       /* End head */
        uint8_t         mbrp_esect;     /* End sector */
        uint8_t         mbrp_ecyl;      /* End cylinder */
        uint32_t        mbrp_start;     /* Absolute starting sector number */
        uint32_t        mbrp_size;      /* Partition size in sectors */
} __packed;

int xlat_mbr_fstype(int);       /* in sys/lib/libkern/xlat_mbr_fstype.c */

/*
 * MBR boot sector.
 * This is used by both the MBR (Master Boot Record) in sector 0 of the disk
 * and the PBR (Partition Boot Record) in sector 0 of an MBR partition.
 */
struct mbr_sector {
                                        /* Jump instruction to boot code.  */
                                        /* Usually 0xE9nnnn or 0xEBnn90 */
        uint8_t                 mbr_jmpboot[3];
                                        /* OEM name and version */
        uint8_t                 mbr_oemname[8];
        union {                         /* BIOS Parameter Block */
                struct mbr_bpbFAT12     bpb12;
                struct mbr_bpbFAT16     bpb16;
                struct mbr_bpbFAT32     bpb32;
        } mbr_bpb;
                                        /* Boot code */
        uint8_t                 mbr_bootcode[310];
                                        /* Config for /usr/mdec/mbr_bootsel */
        struct mbr_bootsel      mbr_bootsel;
                                        /* NT Drive Serial Number */
        uint32_t                mbr_dsn;
                                        /* mbr_bootsel magic */
        uint16_t                mbr_bootsel_magic;
                                        /* MBR partition table */
        struct mbr_partition    mbr_parts[MBR_PART_COUNT];
                                        /* MBR magic (0xaa55) */
        uint16_t                mbr_magic;
} __packed;

#endif  /* !defined(__ASSEMBLER__) */                           /* } */


/* ------------------------------------------
 * shared --
 *      definitions shared by many platforms
 */

#if !defined(__ASSEMBLER__)                                     /* { */

        /* Maximum # of blocks in bbi_block_table, each bbi_block_size long */
#define SHARED_BBINFO_MAXBLOCKS 118     /* so sizeof(shared_bbinfo) == 512 */

struct shared_bbinfo {
        uint8_t bbi_magic[32];
        int32_t bbi_block_size;
        int32_t bbi_block_count;
        int32_t bbi_block_table[SHARED_BBINFO_MAXBLOCKS];
};

/* ------------------------------------------
 * alpha --
 *      Alpha (disk, but also tape) Boot Block.
 *
 *      See Section (III) 3.6.1 of the Alpha Architecture Reference Manual.
 */

struct alpha_boot_block {
        uint64_t bb_data[63];           /* data (disklabel, also as below) */
        uint64_t bb_cksum;              /* checksum of the boot block,
                                         * taken as uint64_t's
                                         */
};
#define bb_secsize      bb_data[60]     /* secondary size (blocks) */
#define bb_secstart     bb_data[61]     /* secondary start (blocks) */
#define bb_flags        bb_data[62]     /* unknown flags (set to zero) */

#define ALPHA_BOOT_BLOCK_OFFSET         0       /* offset of boot block. */
#define ALPHA_BOOT_BLOCK_BLOCKSIZE      512     /* block size for sector
                                                 * size/start, and for boot
                                                 * block itself.
                                                 */

#define ALPHA_BOOT_BLOCK_CKSUM(bb,cksum)                                \
        do {                                                            \
                const struct alpha_boot_block *_bb = (bb);              \
                uint64_t _cksum;                                        \
                size_t _i;                                              \
                                                                        \
                _cksum = 0;                                             \
                for (_i = 0;                                            \
                    _i < (sizeof _bb->bb_data / sizeof _bb->bb_data[0]); \
                    _i++)                                               \
                        _cksum += le64toh(_bb->bb_data[_i]);            \
                *(cksum) = htole64(_cksum);                             \
        } while (0)

/* ------------------------------------------
 * apple --
 *      Apple computers boot block related information
 */

/*
 *      Driver Descriptor Map, from Inside Macintosh: Devices, SCSI Manager
 *      pp 12-13.  The driver descriptor map always resides on physical block 0.
 */
struct apple_drvr_descriptor {
        uint32_t        descBlock;      /* first block of driver */
        uint16_t        descSize;       /* driver size in blocks */
        uint16_t        descType;       /* system type */
} __packed;

/*
 *      system types; Apple reserves 0-15
 */
#define APPLE_DRVR_TYPE_MACINTOSH       1

#define APPLE_DRVR_MAP_MAGIC            0x4552
#define APPLE_DRVR_MAP_MAX_DESCRIPTORS  61

struct apple_drvr_map {
        uint16_t        sbSig;          /* map signature */
        uint16_t        sbBlockSize;    /* block size of device */
        uint32_t        sbBlkCount;     /* number of blocks on device */
        uint16_t        sbDevType;      /* (used internally by ROM) */
        uint16_t        sbDevID;        /* (used internally by ROM) */
        uint32_t        sbData;         /* (used internally by ROM) */
        uint16_t        sbDrvrCount;    /* number of driver descriptors */
        struct apple_drvr_descriptor sb_dd[APPLE_DRVR_MAP_MAX_DESCRIPTORS];
        uint16_t        pad[3];
} __packed;

/*
 *      Partition map structure from Inside Macintosh: Devices, SCSI Manager
 *      pp. 13-14.  The partition map always begins on physical block 1.
 *
 *      With the exception of block 0, all blocks on the disk must belong to
 *      exactly one partition.  The partition map itself belongs to a partition
 *      of type `APPLE_PARTITION_MAP', and is not limited in size by anything
 *      other than available disk space.  The partition map is not necessarily
 *      the first partition listed.
 */
#define APPLE_PART_MAP_ENTRY_MAGIC      0x504d

struct apple_part_map_entry {
        uint16_t        pmSig;          /* partition signature */
        uint16_t        pmSigPad;       /* (reserved) */
        uint32_t        pmMapBlkCnt;    /* number of blocks in partition map */
        uint32_t        pmPyPartStart;  /* first physical block of partition */
        uint32_t        pmPartBlkCnt;   /* number of blocks in partition */
        uint8_t         pmPartName[32]; /* partition name */
        uint8_t         pmPartType[32]; /* partition type */
        uint32_t        pmLgDataStart;  /* first logical block of data area */
        uint32_t        pmDataCnt;      /* number of blocks in data area */
        uint32_t        pmPartStatus;   /* partition status information */
/*
 * Partition Status Information from Apple Tech Note 1189
 */
#define APPLE_PS_VALID          0x00000001      /* Entry is valid */
#define APPLE_PS_ALLOCATED      0x00000002      /* Entry is allocated */
#define APPLE_PS_IN_USE         0x00000004      /* Entry in use */
#define APPLE_PS_BOOT_INFO      0x00000008      /* Entry contains boot info */
#define APPLE_PS_READABLE       0x00000010      /* Entry is readable */
#define APPLE_PS_WRITABLE       0x00000020      /* Entry is writable */
#define APPLE_PS_BOOT_CODE_PIC  0x00000040      /* Boot code has position
                                                 * independent code */
#define APPLE_PS_CC_DRVR        0x00000100      /* Partition contains chain-
                                                 * compatible driver */
#define APPLE_PS_RL_DRVR        0x00000200      /* Partition contains real
                                                 * driver */
#define APPLE_PS_CH_DRVR        0x00000400      /* Partition contains chain
                                                 * driver */
#define APPLE_PS_AUTO_MOUNT     0x40000000      /* Mount automatically at
                                                 * startup */
#define APPLE_PS_STARTUP        0x80000000      /* Is the startup partition */
        uint32_t        pmLgBootStart;  /* first logical block of boot code */
        uint32_t        pmBootSize;     /* size of boot code, in bytes */
        uint32_t        pmBootLoad;     /* boot code load address */
        uint32_t        pmBootLoad2;    /* (reserved) */
        uint32_t        pmBootEntry;    /* boot code entry point */
        uint32_t        pmBootEntry2;   /* (reserved) */
        uint32_t        pmBootCksum;    /* boot code checksum */
        int8_t          pmProcessor[16]; /* processor type (e.g. "68020") */
        uint8_t         pmBootArgs[128]; /* A/UX boot arguments */
        uint8_t         pad[248];       /* pad to end of block */
};

#define APPLE_PART_TYPE_DRIVER          "APPLE_DRIVER"
#define APPLE_PART_TYPE_DRIVER43        "APPLE_DRIVER43"
#define APPLE_PART_TYPE_DRIVERATA       "APPLE_DRIVER_ATA"
#define APPLE_PART_TYPE_DRIVERIOKIT     "APPLE_DRIVER_IOKIT"
#define APPLE_PART_TYPE_FWDRIVER        "APPLE_FWDRIVER"
#define APPLE_PART_TYPE_FWB_COMPONENT   "FWB DRIVER COMPONENTS"
#define APPLE_PART_TYPE_FREE            "APPLE_FREE"
#define APPLE_PART_TYPE_MAC             "APPLE_HFS"
#define APPLE_PART_TYPE_NETBSD          "NETBSD"
#define APPLE_PART_TYPE_NBSD_PPCBOOT    "NETBSD/MACPPC"
#define APPLE_PART_TYPE_NBSD_68KBOOT    "NETBSD/MAC68K"
#define APPLE_PART_TYPE_PATCHES         "APPLE_PATCHES"
#define APPLE_PART_TYPE_PARTMAP         "APPLE_PARTITION_MAP"
#define APPLE_PART_TYPE_PATCHES         "APPLE_PATCHES"
#define APPLE_PART_TYPE_SCRATCH         "APPLE_SCRATCH"
#define APPLE_PART_TYPE_UNIX            "APPLE_UNIX_SVR2"

/*
 * "pmBootArgs" for APPLE_UNIX_SVR2 partition.
 * NetBSD/mac68k only uses Magic, Cluster, Type, and Flags.
 */
struct apple_blockzeroblock {
        uint32_t       bzbMagic;
        uint8_t        bzbCluster;
        uint8_t        bzbType;
        uint16_t       bzbBadBlockInode;
        uint16_t       bzbFlags;
        uint16_t       bzbReserved;
        uint32_t       bzbCreationTime;
        uint32_t       bzbMountTime;
        uint32_t       bzbUMountTime;
};

#define APPLE_BZB_MAGIC         0xABADBABE
#define APPLE_BZB_TYPEFS        1
#define APPLE_BZB_TYPESWAP      3
#define APPLE_BZB_ROOTFS        0x8000
#define APPLE_BZB_USRFS         0x4000

/* ------------------------------------------
 * ews4800mips
 *
 */

#define EWS4800MIPS_BBINFO_MAGIC                "NetBSD/ews4800mips     20040611"
#define EWS4800MIPS_BOOT_BLOCK_OFFSET           0
#define EWS4800MIPS_BOOT_BLOCK_BLOCKSIZE        512
#define EWS4800MIPS_BOOT_BLOCK_MAX_SIZE         (512 * 8)

/* ------------------------------------------
 * hp300
 *
 */

/* volume header for "LIF" format volumes */

struct  hp300_lifvol {
        uint16_t        vol_id;
        char            vol_label[6];
        uint32_t        vol_addr;
        uint16_t        vol_oct;
        uint16_t        vol_dummy;
        uint32_t        vol_dirsize;
        uint16_t        vol_version;
        uint16_t        vol_zero;
        uint32_t        vol_huh1;
        uint32_t        vol_huh2;
        uint32_t        vol_length;
};

/* LIF directory entry format */

struct  hp300_lifdir {
        char            dir_name[10];
        uint16_t        dir_type;
        uint32_t        dir_addr;
        uint32_t        dir_length;
        char            dir_toc[6];
        uint16_t        dir_flag;
        uint32_t        dir_exec;
};

/* load header for boot rom */
struct hp300_load {
        uint32_t        address;
        uint32_t        count;
};

#define HP300_VOL_ID            0x8000  /* always $8000 */
#define HP300_VOL_OCT           4096
#define HP300_DIR_TYPE          0xe942  /* "SYS9k Series 9000" */
#define HP300_DIR_FLAG          0x8001  /* don't ask me! */
#define HP300_SECTSIZE          256

#define HP300_LIF_NUMDIR        8

#define HP300_LIF_VOLSTART      0
#define HP300_LIF_VOLSIZE       sizeof(struct hp300_lifvol)
#define HP300_LIF_DIRSTART      512
#define HP300_LIF_DIRSIZE       (HP300_LIF_NUMDIR * sizeof(struct hp300_lifdir))
#define HP300_LIF_FILESTART     8192

#define hp300_btolifs(b)        (((b) + (HP300_SECTSIZE - 1)) / HP300_SECTSIZE)
#define hp300_lifstob(s)        ((s) * HP300_SECTSIZE)


/* ------------------------------------------
 * hppa
 *
 */

/*
 * volume header for "LIF" format volumes
 */
struct  hppa_lifvol {
        uint16_t        vol_id;
        uint8_t         vol_label[6];
        uint32_t        vol_addr;
        uint16_t        vol_oct;
        uint16_t        vol_dummy;

        uint32_t        vol_dirsize;
        uint16_t        vol_version;
        uint16_t        vol_zero;
        uint32_t        vol_number;
        uint32_t        vol_lastvol;

        uint32_t        vol_length;
        uint8_t         vol_toc[6];
        uint8_t         vol_dummy1[198];

        uint32_t        ipl_addr;
        uint32_t        ipl_size;
        uint32_t        ipl_entry;

        uint32_t        vol_dummy2;
};

struct  hppa_lifdir {
        uint8_t         dir_name[10];
        uint16_t        dir_type;
        uint32_t        dir_addr;
        uint32_t        dir_length;
        uint8_t         dir_toc[6];
        uint16_t        dir_flag;
        uint32_t        dir_implement;
};

struct hppa_lifload {
        int address;
        int count;
};

#define HPPA_LIF_VOL_ID 0x8000
#define HPPA_LIF_VOL_OCT        0x1000
#define HPPA_LIF_DIR_SWAP       0x5243
#define HPPA_LIF_DIR_FS 0xcd38
#define HPPA_LIF_DIR_IOMAP      0xcd60
#define HPPA_LIF_DIR_HPUX       0xcd80
#define HPPA_LIF_DIR_ISL        0xce00
#define HPPA_LIF_DIR_PAD        0xcffe
#define HPPA_LIF_DIR_AUTO       0xcfff
#define HPPA_LIF_DIR_EST        0xd001
#define HPPA_LIF_DIR_TYPE       0xe942

#define HPPA_LIF_DIR_FLAG       0x8001  /* dont ask me! */
#define HPPA_LIF_SECTSIZE       256

#define HPPA_LIF_NUMDIR 8

#define HPPA_LIF_VOLSTART       0
#define HPPA_LIF_VOLSIZE        sizeof(struct hppa_lifvol)
#define HPPA_LIF_DIRSTART       2048
#define HPPA_LIF_DIRSIZE        (HPPA_LIF_NUMDIR * sizeof(struct hppa_lifdir))
#define HPPA_LIF_FILESTART      4096

#define hppa_btolifs(b) (((b) + (HPPA_LIF_SECTSIZE - 1)) / HPPA_LIF_SECTSIZE)
#define hppa_lifstob(s) ((s) * HPPA_LIF_SECTSIZE)
#define hppa_lifstodb(s)        ((s) * HPPA_LIF_SECTSIZE / DEV_BSIZE)


/* ------------------------------------------
 * x86
 *
 */

/*
 * Parameters for NetBSD /boot written to start of pbr code by installboot
 */

struct x86_boot_params {
        uint32_t        bp_length;      /* length of patchable data */
        uint32_t        bp_flags;
        uint32_t        bp_timeout;     /* boot timeout in seconds */
        uint32_t        bp_consdev;
        uint32_t        bp_conspeed;
        uint8_t         bp_password[16];        /* md5 hash of password */
        char            bp_keymap[64];  /* keyboard translation map */
        uint32_t        bp_consaddr;    /* ioaddr for console */
};

#endif  /* !defined(__ASSEMBLER__) */                           /* } */

#define X86_BOOT_MAGIC(n)       ('x' << 24 | 0x86b << 12 | 'm' << 4 | (n))
#define X86_BOOT_MAGIC_1        X86_BOOT_MAGIC(1)       /* pbr.S */
#define X86_BOOT_MAGIC_2        X86_BOOT_MAGIC(2)       /* bootxx.S */
#define X86_BOOT_MAGIC_PXE      X86_BOOT_MAGIC(3)       /* start_pxe.S */
#define X86_BOOT_MAGIC_FAT      X86_BOOT_MAGIC(4)       /* fatboot.S */
#define X86_BOOT_MAGIC_EFI      X86_BOOT_MAGIC(5)       /* efiboot/start.S */
#define X86_MBR_GPT_MAGIC       0xedb88320              /* gpt.S */

                /* values for bp_flags */
#define X86_BP_FLAGS_RESET_VIDEO        1
#define X86_BP_FLAGS_PASSWORD           2
#define X86_BP_FLAGS_NOMODULES          4
#define X86_BP_FLAGS_NOBOOTCONF         8
#define X86_BP_FLAGS_LBA64VALID         0x10

                /* values for bp_consdev */
#define X86_BP_CONSDEV_PC       0
#define X86_BP_CONSDEV_COM0     1
#define X86_BP_CONSDEV_COM1     2
#define X86_BP_CONSDEV_COM2     3
#define X86_BP_CONSDEV_COM3     4
#define X86_BP_CONSDEV_COM0KBD  5
#define X86_BP_CONSDEV_COM1KBD  6
#define X86_BP_CONSDEV_COM2KBD  7
#define X86_BP_CONSDEV_COM3KBD  8

/* ------------------------------------------
 * landisk
 */

#if !defined(__ASSEMBLER__)                                     /* { */

/*
 * Parameters for NetBSD /boot written to start of pbr code by installboot
 */
struct landisk_boot_params {
        uint32_t        bp_length;      /* length of patchable data */
        uint32_t        bp_flags;
        uint32_t        bp_timeout;     /* boot timeout in seconds */
        uint32_t        bp_consdev;
        uint32_t        bp_conspeed;
};

#endif  /* !defined(__ASSEMBLER__) */                           /* } */

#define LANDISK_BOOT_MAGIC_1    0x20031125
#define LANDISK_BOOT_MAGIC_2    0x20041110

#if !defined(__ASSEMBLER__)                                     /* { */

/* ------------------------------------------
 * macppc
 */

#define MACPPC_BOOT_BLOCK_OFFSET        2048
#define MACPPC_BOOT_BLOCK_BLOCKSIZE     512
#define MACPPC_BOOT_BLOCK_MAX_SIZE      2048    /* XXX: could be up to 6144 */
        /* Magic string -- 32 bytes long (including the NUL) */
#define MACPPC_BBINFO_MAGIC             "NetBSD/macppc bootxx   20020515"

/* ------------------------------------------
 * news68k, newsmips
 */

#define NEWS_BOOT_BLOCK_LABELOFFSET     64 /* XXX from <machine/disklabel.h> */
#define NEWS_BOOT_BLOCK_OFFSET          0
#define NEWS_BOOT_BLOCK_BLOCKSIZE       512
#define NEWS_BOOT_BLOCK_MAX_SIZE        (512 * 16)

        /* Magic string -- 32 bytes long (including the NUL) */
#define NEWS68K_BBINFO_MAGIC            "NetBSD/news68k bootxx  20020518"
#define NEWSMIPS_BBINFO_MAGIC           "NetBSD/newsmips bootxx 20020518"

/* ------------------------------------------
 * next68k
 */

#define NEXT68K_LABEL_MAXPARTITIONS     8       /* number of partitions in next68k_disklabel */
#define NEXT68K_LABEL_CPULBLLEN         24
#define NEXT68K_LABEL_MAXDNMLEN         24
#define NEXT68K_LABEL_MAXTYPLEN         24
#define NEXT68K_LABEL_MAXBFLEN          24
#define NEXT68K_LABEL_MAXHNLEN          32
#define NEXT68K_LABEL_MAXMPTLEN         16
#define NEXT68K_LABEL_MAXFSTLEN         8
#define NEXT68K_LABEL_NBAD              1670    /* sized to make label ~= 8KB */

struct next68k_partition {
        int32_t cp_offset;              /* starting sector */
        int32_t cp_size;                /* number of sectors in partition */
        int16_t cp_bsize;               /* block size in bytes */
        int16_t cp_fsize;               /* filesystem basic fragment size */
        char    cp_opt;                 /* optimization type: 's'pace/'t'ime */
        char    cp_pad1;
        int16_t cp_cpg;                 /* filesystem cylinders per group */
        int16_t cp_density;             /* bytes per inode density */
        int8_t  cp_minfree;             /* minfree (%) */
        int8_t  cp_newfs;               /* run newfs during init */
        char    cp_mountpt[NEXT68K_LABEL_MAXMPTLEN];
                                        /* default/standard mount point */
        int8_t  cp_automnt;             /* auto-mount when inserted */
        char    cp_type[NEXT68K_LABEL_MAXFSTLEN]; /* file system type name */
        char    cp_pad2;
} __packed;

/* The disklabel the way it is on the disk */
struct next68k_disklabel {
        int32_t cd_version;             /* label version */
        int32_t cd_label_blkno;         /* block # of this label */
        int32_t cd_size;                /* size of media area (sectors) */
        char    cd_label[NEXT68K_LABEL_CPULBLLEN]; /* disk name (label) */
        uint32_t cd_flags;              /* flags */
        uint32_t cd_tag;                /* volume tag */
        char    cd_name[NEXT68K_LABEL_MAXDNMLEN]; /* drive (hardware) name */
        char    cd_type[NEXT68K_LABEL_MAXTYPLEN]; /* drive type */
        int32_t cd_secsize;             /* # of bytes per sector */
        int32_t cd_ntracks;             /* # of tracks per cylinder */
        int32_t cd_nsectors;            /* # of data sectors per track */
        int32_t cd_ncylinders;          /* # of data cylinders per unit */
        int32_t cd_rpm;                 /* rotational speed */
        int16_t cd_front;               /* # of sectors in "front porch" */
        int16_t cd_back;                /* # of sectors in "back porch" */
        int16_t cd_ngroups;             /* # of alt groups */
        int16_t cd_ag_size;             /* alt group size (sectors) */
        int16_t cd_ag_alts;             /* alternate sectors / alt group */
        int16_t cd_ag_off;              /* sector offset to first alternate */
        int32_t cd_boot_blkno[2];       /* boot program locations */
        char    cd_kernel[NEXT68K_LABEL_MAXBFLEN]; /* default kernel name */
        char    cd_hostname[NEXT68K_LABEL_MAXHNLEN];
                                /* host name (usu. where disk was labeled) */
        char    cd_rootpartition;       /* root partition letter e.g. 'a' */
        char    cd_rwpartition;         /* r/w partition letter e.g. 'b' */
        struct next68k_partition cd_partitions[NEXT68K_LABEL_MAXPARTITIONS];

        union {
                uint16_t CD_v3_checksum; /* label version 3 checksum */
                int32_t CD_bad[NEXT68K_LABEL_NBAD];
                                        /* block number that is bad */
        } cd_un;
        uint16_t cd_checksum;           /* label version 1 or 2 checksum */
} __packed;

#define NEXT68K_LABEL_cd_checksum       cd_checksum
#define NEXT68K_LABEL_cd_v3_checksum    cd_un.CD_v3_checksum
#define NEXT68K_LABEL_cd_bad            cd_un.CD_bad

#define NEXT68K_LABEL_SECTOR            0       /* sector containing label */
#define NEXT68K_LABEL_OFFSET            0       /* offset of label in sector */
#define NEXT68K_LABEL_SIZE              8192    /* size of label */
#define NEXT68K_LABEL_CD_V1             0x4e655854 /* version #1: "NeXT" */
#define NEXT68K_LABEL_CD_V2             0x646c5632 /* version #2: "dlV2" */
#define NEXT68K_LABEL_CD_V3             0x646c5633 /* version #3: "dlV3" */
#define NEXT68K_LABEL_DEFAULTFRONTPORCH (160 * 2)
#define NEXT68K_LABEL_DEFAULTBOOT0_1    (32 * 2)
#define NEXT68K_LABEL_DEFAULTBOOT0_2    (96 * 2)

/* ------------------------------------------
 * pmax --
 *      PMAX (DECstation / MIPS) boot block information
 */

/*
 * If mode is 0, there is just one sequence of blocks and one Dec_BootMap
 * is used.  If mode is 1, there are multiple sequences of blocks
 * and multiple Dec_BootMaps are used, the last with numBlocks = 0.
 */
struct pmax_boot_map {
        int32_t num_blocks;             /* Number of blocks to read. */
        int32_t start_block;            /* Starting block on disk. */
};

/*
 * This is the structure of a disk or tape boot block.  The boot_map
 * can either be a single boot count and start block (contiguous mode)
 * or a list of up to 61 (to fill a 512 byte sector) block count and
 * start block pairs.  Under NetBSD, contiguous mode is always used.
 */
struct pmax_boot_block {
        uint8_t         pad[8];
        int32_t         magic;                  /* PMAX_BOOT_MAGIC */
        int32_t         mode;                   /* Mode for boot info. */
        uint32_t        load_addr;              /* Address to start loading. */
        uint32_t        exec_addr;              /* Address to start execing. */
        struct          pmax_boot_map map[61];  /* boot program section(s). */
} __packed;

#define PMAX_BOOT_MAGIC                 0x0002757a
#define PMAX_BOOTMODE_CONTIGUOUS        0
#define PMAX_BOOTMODE_SCATTERED         1

#define PMAX_BOOT_BLOCK_OFFSET          0
#define PMAX_BOOT_BLOCK_BLOCKSIZE       512


/* ------------------------------------------
 * sgimips
 */

/*
 * Some IRIX man pages refer to the size being a multiple of whole cylinders.
 * Later ones only refer to the size being "typically" 2MB.  IRIX fx(1)
 * uses a default drive geometry if one can't be determined, suggesting
 * that "whole cylinder" multiples are not required.
 */

#define SGI_BOOT_BLOCK_SIZE_VOLHDR      3135
#define SGI_BOOT_BLOCK_MAGIC            0xbe5a941
#define SGI_BOOT_BLOCK_MAXPARTITIONS    16
#define SGI_BOOT_BLOCK_MAXVOLDIRS       15
#define SGI_BOOT_BLOCK_BLOCKSIZE        512

/*
 * SGI partition conventions:
 *
 * Partition 0 - root
 * Partition 1 - swap
 * Partition 6 - usr
 * Partition 7 - volume body
 * Partition 8 - volume header
 * Partition 10 - whole disk
 */

struct sgi_boot_devparms {
        uint8_t         dp_skew;
        uint8_t         dp_gap1;
        uint8_t         dp_gap2;
        uint8_t         dp_spares_cyl;
        uint16_t        dp_cyls;
        uint16_t        dp_shd0;
        uint16_t        dp_trks0;
        uint8_t         dp_ctq_depth;
        uint8_t         dp_cylshi;
        uint16_t        dp_unused;
        uint16_t        dp_secs;
        uint16_t        dp_secbytes;
        uint16_t        dp_interleave;
        uint32_t        dp_flags;
        uint32_t        dp_datarate;
        uint32_t        dp_nretries;
        uint32_t        dp_mspw;
        uint16_t        dp_xgap1;
        uint16_t        dp_xsync;
        uint16_t        dp_xrdly;
        uint16_t        dp_xgap2;
        uint16_t        dp_xrgate;
        uint16_t        dp_xwcont;
} __packed;

struct sgi_boot_block {
        uint32_t        magic;
        int16_t         root;
        int16_t         swap;
        char            bootfile[16];
        struct sgi_boot_devparms dp;
        struct {
                char            name[8];
                int32_t         block;
                int32_t         bytes;
        }               voldir[SGI_BOOT_BLOCK_MAXVOLDIRS];
        struct {
                int32_t         blocks;
                int32_t         first;
                int32_t         type;
        }               partitions[SGI_BOOT_BLOCK_MAXPARTITIONS];
        int32_t         checksum;
        int32_t         _pad;
} __packed;

#define SGI_PTYPE_VOLHDR        0
#define SGI_PTYPE_TRKREPL       1
#define SGI_PTYPE_SECREPL       2
#define SGI_PTYPE_RAW           3
#define SGI_PTYPE_BSD           4
#define SGI_PTYPE_SYSV          5
#define SGI_PTYPE_VOLUME        6
#define SGI_PTYPE_EFS           7
#define SGI_PTYPE_LVOL          8
#define SGI_PTYPE_RLVOL         9
#define SGI_PTYPE_XFS           10
#define SGI_PTYPE_XFSLOG        11
#define SGI_PTYPE_XLV           12
#define SGI_PTYPE_XVM           13

/* ------------------------------------------
 * sparc
 */

#define SPARC_BOOT_BLOCK_OFFSET         512
#define SPARC_BOOT_BLOCK_BLOCKSIZE      512
#define SPARC_BOOT_BLOCK_MAX_SIZE       (512 * 15)
        /* Magic string -- 32 bytes long (including the NUL) */
#define SPARC_BBINFO_MAGIC              "NetBSD/sparc bootxx    20020515"


/* ------------------------------------------
 * sparc64
 */

#define SPARC64_BOOT_BLOCK_OFFSET       512
#define SPARC64_BOOT_BLOCK_BLOCKSIZE    512
#define SPARC64_BOOT_BLOCK_MAX_SIZE     (512 * 15)


/* ------------------------------------------
 * sun68k (sun2, sun3)
 */

#define SUN68K_BOOT_BLOCK_OFFSET        512
#define SUN68K_BOOT_BLOCK_BLOCKSIZE     512
#define SUN68K_BOOT_BLOCK_MAX_SIZE      (512 * 15)
        /* Magic string -- 32 bytes long (including the NUL) */
#define SUN68K_BBINFO_MAGIC             "NetBSD/sun68k bootxx   20020515"


/* ------------------------------------------
 * vax --
 *      VAX boot block information
 */

struct vax_boot_block {
/* Note that these don't overlap any of the pmax boot block */
        uint8_t         pad0[2];
        uint8_t         bb_id_offset;   /* offset in words to id (magic1)*/
        uint8_t         bb_mbone;       /* must be one */
        uint16_t        bb_lbn_hi;      /* lbn (hi word) of bootstrap */
        uint16_t        bb_lbn_low;     /* lbn (low word) of bootstrap */
        uint8_t         pad1[406];
        /* disklabel offset is 64 from base, or 56 from start of pad1 */

        /* The rest of these fields are identification area and describe
         * the secondary block for uVAX VMB.
         */
        uint8_t         bb_magic1;      /* magic number */
        uint8_t         bb_mbz1;        /* must be zero */
        uint8_t         bb_pad1;        /* any value */
        uint8_t         bb_sum1;        /* ~(magic1 + mbz1 + pad1) */

        uint8_t         bb_mbz2;        /* must be zero */
        uint8_t         bb_volinfo;     /* volinfo */
        uint8_t         bb_pad2a;       /* any value */
        uint8_t         bb_pad2b;       /* any value */

        uint32_t        bb_size;        /* size in blocks of bootstrap */
        uint32_t        bb_load;        /* load offset to bootstrap */
        uint32_t        bb_entry;       /* byte offset in bootstrap */
        uint32_t        bb_sum3;        /* sum of previous 3 fields */

        /* The rest is unused.
         */
        uint8_t         pad2[74];
} __packed;

#define VAX_BOOT_MAGIC1                 0x18    /* size of BB info? */
#define VAX_BOOT_VOLINFO_NONE           0x00    /* no special info */
#define VAX_BOOT_VOLINFO_SS             0x01    /* single sided */
#define VAX_BOOT_VOLINFO_DS             0x81    /* double sided */

#define VAX_BOOT_SIZE                   15      /* 15 blocks */
#define VAX_BOOT_LOAD                   0       /* no load offset */
#define VAX_BOOT_ENTRY                  0x200   /* one block in */

#define VAX_BOOT_BLOCK_OFFSET           0
#define VAX_BOOT_BLOCK_BLOCKSIZE        512


/* ------------------------------------------
 * x68k
 */

#define X68K_BOOT_BLOCK_OFFSET          0
#define X68K_BOOT_BLOCK_BLOCKSIZE       512
#define X68K_BOOT_BLOCK_MAX_SIZE        (512 * 16)
        /* Magic string -- 32 bytes long (including the NUL) */
#define X68K_BBINFO_MAGIC               "NetBSD/x68k bootxx     20020601"

#endif  /* !defined(__ASSEMBLER__) */                           /* } */

#endif  /* !_SYS_BOOTBLOCK_H */