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/* $OpenBSD: disklabel.h,v 1.13 2013/09/29 12:17:59 miod Exp $ */
/*
* Copyright (c) 2010 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _MACHINE_DISKLABEL_H_
#define _MACHINE_DISKLABEL_H_
#define LABELSECTOR 1 /* sector containing label */
#define LABELOFFSET 0 /* offset of label in sector */
#define MAXPARTITIONS 16 /* number of partitions */
/*
* AViiON native disk identification
*/
#define VDM_LABEL_SIGNATURE 0x1234abcd
#define VDM_LABEL_SECTOR 0
#define VDM_LABEL_OFFSET 0x1c8
#define VDM_LABEL_OFFSET_ALT 0x1c0
struct vdm_label {
uint32_t signature;
uint32_t version;
uint32_t unused[2];
};
#define VDM_LABEL_VERSION 0
struct vdm_boot_info {
uint32_t padding[6];
uint32_t signature;
uint32_t boot_start;
uint32_t boot_size;
uint32_t version;
};
#define VDM_BOOT_INFO_VERSION 1
#define VDM_BOOT_DEFAULT_SIZE 500
/*
* MBR identification information is in <sys/disklabel.h>
*/
/* DG/UX VDM partition type (apparently not used on m88k AViiON) */
#define DOSPTYP_DGUX_VDM 0xdf
/*
* DG/UX VDM structures
*/
#define VDIT_SECTOR 1
struct vdm_self_id {
union {
uint8_t _kind;
uint32_t _blkno;
} u;
uint32_t node_number;
} __packed;
#define VDM_ID_KIND(id) ((id)->u._kind)
#define VDM_BLKNO_MASK 0x00ffffff /* low 24 bits */
#define VDM_ID_BLKNO(id) (((id)->u._blkno) & VDM_BLKNO_MASK)
#define VDM_NO_NODE_NUMBER 012345670123
#define VDM_NO_BLK_NUMBER 0xffffffff
#define VDIT_BLOCK 0x12
#define VDIT_PORTION_HEADER_BLOCK 0x13
#define VDIT_BLOCK_HEAD_BE 0x14
#define VDIT_BLOCK_HEAD_LE 0x18
struct vdit_block_header {
struct vdm_self_id id;
uint32_t nextblk;
uint32_t timestamp;
uint32_t secondary_vdit;
uint16_t chunksz;
uint16_t padding;
} __packed;
typedef uint32_t vdit_timestamp_t;
typedef uint32_t vdit_id_t;
struct vdit_entry_header {
uint16_t type;
uint16_t size;
vdit_timestamp_t timestamp;
} __packed;
#define VDIT_ENTRY_SENTINEL 0x00
#define VDIT_ENTRY_UNUSED 0x01
#define VDIT_ENTRY_BOOT_INFO 0x02
#define VDIT_ENTRY_SUBDRIVER_INFO 0x03
#define VDIT_ENTRY_INSTANCE 0x04
#define VDIT_NAME_MAX 0x20
struct vdit_instance_id {
vdit_timestamp_t generation_timestamp;
vdit_id_t system_id;
} __packed;
struct vdit_boot_info_entry {
uint16_t version;
struct vdit_instance_id default_swap;
struct vdit_instance_id default_root;
} __packed;
struct vdit_subdriver_entry {
uint16_t version;
vdit_id_t subdriver_id;
char name[VDIT_NAME_MAX];
} __packed;
#define VDM_SUBDRIVER_VDMPHYS "vdmphys"
#define VDM_SUBDRIVER_VDMPART "vdmpart"
#define VDM_SUBDRIVER_VDMAGGR "vdmaggr"
#define VDM_SUBDRIVER_VDMREMAP "vdmremap"
struct vdit_instance_entry {
uint16_t version;
char name[VDIT_NAME_MAX];
vdit_id_t subdriver_id;
struct vdit_instance_id instance_id;
uint8_t exported;
} __packed;
#define VDM_INSTANCE_OPENBSD "OpenBSD"
struct vdit_vdmphys_instance {
struct vdit_instance_entry instance;
uint16_t version;
uint16_t mode;
#define VDMPHYS_MODE_READONLY 0x00
#define VDMPHYS_MODE_READWRITE 0x01
} __packed;
struct vdit_vdmpart_instance {
struct vdit_instance_entry instance;
uint16_t version;
struct vdit_instance_id child_instance;
uint32_t start_blkno;
uint32_t size;
struct vdit_instance_id remap_instance;
} __packed;
struct vdit_vdmaggr_instance {
struct vdit_instance_entry instance;
uint16_t version;
uint16_t aggr_count;
uint32_t stripe_size;
struct vdit_instance_id pieces[0];
} __packed;
struct vdit_vdmremap_instance {
struct vdit_instance_entry instance;
uint16_t version;
struct vdit_instance_id primary_remap_table;
struct vdit_instance_id secondary_remap_table;
struct vdit_instance_id remap_area;
} __packed;
#endif /* _MACHINE_DISKLABEL_H_ */
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