1/* $NetBSD: efiblock.h,v 1.7 2022/04/24 06:49:38 mlelstv Exp $ */
2
3/*-
4 * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/queue.h>
30#include <sys/bootblock.h>
31#include <sys/disklabel.h>
32#include <sys/disklabel_gpt.h>
33
34enum efi_block_part_type {
35	EFI_BLOCK_PART_DISKLABEL,
36	EFI_BLOCK_PART_GPT,
37	EFI_BLOCK_PART_CD9660
38};
39
40struct efi_block_part;
41
42struct efi_block_dev {
43	uint16_t index;
44	EFI_DEVICE_PATH *path;
45	EFI_BLOCK_IO *bio;
46	EFI_DISK_IO *dio;
47	UINT32 media_id;
48	TAILQ_HEAD(, efi_block_part) partitions;
49
50	TAILQ_ENTRY(efi_block_dev) entries;
51};
52
53struct efi_block_part_disklabel {
54	uint32_t secsize;
55	struct partition part;
56};
57
58struct efi_block_part_gpt {
59	uint8_t fstype;
60	struct gpt_ent ent;
61};
62
63struct efi_block_part {
64	uint32_t index;
65	struct efi_block_dev *bdev;
66	enum efi_block_part_type type;
67	union {
68		struct efi_block_part_disklabel disklabel;
69		struct efi_block_part_gpt gpt;
70	};
71	uint8_t hash[16];
72
73	TAILQ_ENTRY(efi_block_part) entries;
74};
75
76void efi_block_probe(void);
77void efi_block_show(void);
78struct efi_block_part *efi_block_boot_part(void);
79
80int efi_block_open(struct open_file *, ...);
81int efi_block_close(struct open_file *);
82int efi_block_ioctl(struct open_file *, u_long, void *);
83int efi_block_strategy(void *, int, daddr_t, size_t, void *, size_t *);
84
85void efi_block_set_readahead(bool);
86