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bootblock.h
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bootblock.h
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/* $NetBSD: bootblock.h,v 1.9 2002/05/21 00:19:17 lukem Exp $ */
/*-
* Copyright (c) 2002 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
#ifndef _SYS_BOOTBLOCK_H
#define _SYS_BOOTBLOCK_H
#ifdef _KERNEL
#include <sys/stdint.h>
#else
#include <stdint.h>
#endif
/* ------------------------------------------
* shared --
* definintions shared by many platforms
*/
/* 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; \
int _i; \
\
_cksum = 0; \
for (_i = 0; \
_i < (sizeof _bb->bb_data / sizeof _bb->bb_data[0]); \
_i++) \
_cksum += _bb->bb_data[_i]; \
*(cksum) = _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 */
};
/*
* 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];
} __attribute__ ((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 */
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"
/* ------------------------------------------
* 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"
/* ------------------------------------------
* 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). */
} __attribute__((__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
/* ------------------------------------------
* 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[332];
/* 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[148];
} __attribute__((__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
#endif /* !_SYS_BOOTBLOCK_H */