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 34 enum efi_block_part_type { 35 EFI_BLOCK_PART_DISKLABEL, 36 EFI_BLOCK_PART_GPT, 37 EFI_BLOCK_PART_CD9660 38 }; 39 40 struct efi_block_part; 41 42 struct 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 53 struct efi_block_part_disklabel { 54 uint32_t secsize; 55 struct partition part; 56 }; 57 58 struct efi_block_part_gpt { 59 uint8_t fstype; 60 struct gpt_ent ent; 61 }; 62 63 struct 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 76 void efi_block_probe(void); 77 void efi_block_show(void); 78 struct efi_block_part *efi_block_boot_part(void); 79 80 int efi_block_open(struct open_file *, ...); 81 int efi_block_close(struct open_file *); 82 int efi_block_ioctl(struct open_file *, u_long, void *); 83 int efi_block_strategy(void *, int, daddr_t, size_t, void *, size_t *); 84 85 void efi_block_set_readahead(bool); 86