diff options
Diffstat (limited to 'sys/dev/dec')
| -rw-r--r-- | sys/dev/dec/Makefile | 4 | ||||
| -rw-r--r-- | sys/dev/dec/dec_boot.h | 176 |
2 files changed, 178 insertions, 2 deletions
diff --git a/sys/dev/dec/Makefile b/sys/dev/dec/Makefile index c9fd656140e..e3b353e5f9a 100644 --- a/sys/dev/dec/Makefile +++ b/sys/dev/dec/Makefile @@ -1,7 +1,7 @@ -# $NetBSD: Makefile,v 1.1 1998/06/12 23:22:49 cgd Exp $ +# $NetBSD: Makefile,v 1.2 2000/06/16 23:09:57 matt Exp $ INCSDIR= /usr/include/dev/dec -INCS= clockvar.h lk201.h mcclock_pad32.h mcclockvar.h +INCS= clockvar.h dec_boot.h lk201.h mcclock_pad32.h mcclockvar.h .include <bsd.kinc.mk> diff --git a/sys/dev/dec/dec_boot.h b/sys/dev/dec/dec_boot.h new file mode 100644 index 00000000000..75d3148e90f --- /dev/null +++ b/sys/dev/dec/dec_boot.h @@ -0,0 +1,176 @@ +/* $NetBSD: dec_boot.h,v 1.1 2000/06/16 23:09:57 matt Exp $ */ + +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Ralph Campbell. + * + * 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 University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + * + * @(#)dec_boot.h 8.1 (Berkeley) 6/10/93 + * + * devDiskLabel.h -- + * + * This defines the disk label that Sun writes on the 0'th sector of + * the 0'th cylinder of its SMD disks. The disk label contains some + * geometry information and also the division of the disk into a + * number of partitions. Each partition is identified to the drive + * by a different unit number. + * + * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h, + * v 9.4 90/03/01 12:22:36 jhh Exp SPRITE (Berkeley) + */ + +#ifndef _DEV_DEC_DEC_BOOT_H_ +#define _DEV_DEC_DEC_BOOT_H_ + +/* + * Boot block information on the 0th sector. + * The boot program is stored in sequences of contiguous blocks. + * + * NOTE: The standard disk label offset is 64 which is + * after the boot information expected by the PROM boot loader. + */ + +/* 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 { + u_int8_t pad[8]; + int32_t magic; /* PMAX_BOOT_MAGIC */ + int32_t mode; /* Mode for boot info. */ + u_int32_t load_addr; /* Address to start loading. */ + u_int32_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 + +/* VAX boot block information + * + */ +struct vax_boot_block { +/* Note that these don't overlap any of the pmax boot block + */ + u_int8_t pad0[2]; + u_int8_t bb_id_offset; /* offset in words to id (magic1)*/ + u_int8_t bb_mbone /* must be one */ + u_int16_t bb_lbn_hi; /* lbn (hi word) of bootstrap */ + u_int16_t bb_lbn_low; /* lbn (low word) of bootstrap */ + u_int8_t pad1[332]; + + /* The rest of these fields are identification area and describe + * the secondary block for uVAX VMB. + */ + u_int8_t bb_magic1; /* magic number */ + u_int8_t bb_mbz1; /* must be zero */ + u_int8_t bb_pad1; /* any value */ + u_int8_t bb_sum1; /* ~(magic1 + mbz1 + pad1) */ + + u_int8_t bb_mbz2; /* must be zero */ + u_int8_t bb_volinfo; /* volinfo */ + u_int8_t bb_pad2a; /* any value */ + u_int8_t bb_pad2b; /* any value */ + + u_int32_t bb_size; /* size in blocks of bootstrap */ + u_int32_t bb_load; /* load offset to bootstrap */ + u_int32_t bb_entry; /* byte offset in bootstrap */ + u_int32_t bb_sum3; /* sum of previous 3 fields */ + + /* The rest is unused. + */ + u_int8_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 16 /* 16 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 + +/* The following describes the ULTRIX partition tables. + */ +/* + * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in + * the label information. The size of the padding in the Dec_DiskLabel + * type is dependent on this number... + */ +#define DEC_NUM_DISK_PARTS 8 + +/* + * A disk is divided into partitions and this type specifies where a + * partition starts and how many bytes it contains. + */ +typedef struct dec_disk_map { + int32_t num_blocks; /* Number of 512 byte blocks in partition. */ + int32_t start_block; /* Start of partition in blocks. */ +} dec_disk_map; + +/* + * Label information on the 31st (DEC_LABEL_SECTOR) sector. + */ +typedef struct dec_disklabel { + u_int8_t pad0[440]; /* DIFFERENT from sprite!!! */ + int32_t magic; /* DEC_LABEL_MAGIC */ + int32_t is_partitioned; /* 1 if disk is partitioned. */ + dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */ +} dec_disklabel; + +#define DEC_LABEL_MAGIC 0x00032957 +#define DEC_LABEL_SECTOR 31 + +#endif /* !_DEV_DEC_DEC_BOOT_H_ */ |
