mirror of
https://github.com/grub4dos/ntloader.git
synced 2025-05-09 20:21:08 +08:00
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/*
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* ntloader -- Microsoft Windows NT6+ loader
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* Copyright (C) 2025 A1ive.
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*
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* ntloader is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation, either version 3 of the License,
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* or (at your option) any later version.
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*
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* ntloader is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with ntloader. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _BIOSDISK_H
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#define _BIOSDISK_H
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#include <stdint.h>
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#include <bootapp.h>
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#if defined(__i386__) || defined(__x86_64__)
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#define BIOSDISK_FLAG_LBA 1
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#define BIOSDISK_FLAG_CDROM 2
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/* Drive Parameters. */
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struct biosdisk_drp
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{
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uint16_t size;
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uint16_t flags;
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uint32_t cylinders;
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uint32_t heads;
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uint32_t sectors;
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uint64_t total_sectors;
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uint16_t bytes_per_sector;
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/* ver 2.0 or higher */
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union
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{
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uint32_t EDD_configuration_parameters;
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/* Pointer to the Device Parameter Table Extension (ver 3.0+). */
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uint32_t dpte_pointer;
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};
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/* ver 3.0 or higher */
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uint16_t signature_dpi;
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uint8_t length_dpi;
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uint8_t reserved[3];
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uint8_t name_of_host_bus[4];
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uint8_t name_of_interface_type[8];
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uint8_t interface_path[8];
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uint8_t device_path[16];
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uint8_t reserved2;
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uint8_t checksum;
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/* XXX: This is necessary, because the BIOS of Thinkpad X20
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* writes a garbage to the tail of drive parameters,
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* regardless of a size specified in a caller. */
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uint8_t dummy[16];
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} __attribute__ ((packed));
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struct biosdisk_cdrp
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{
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uint8_t size;
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uint8_t media_type;
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uint8_t drive_no;
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uint8_t controller_no;
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uint32_t image_lba;
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uint16_t device_spec;
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uint16_t cache_seg;
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uint16_t load_seg;
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uint16_t length_sec512;
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uint8_t cylinders;
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uint8_t sectors;
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uint8_t heads;
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uint8_t dummy[16];
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} __attribute__ ((packed));
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/* Disk Address Packet. */
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struct biosdisk_dap
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{
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uint8_t length;
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uint8_t reserved;
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uint16_t blocks;
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uint32_t buffer;
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uint64_t block;
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} __attribute__ ((packed));
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struct biosdisk_data
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{
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/* int13h data */
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int drive;
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unsigned long cylinders;
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unsigned long heads;
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unsigned long sectors;
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unsigned long flags;
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/* disk data */
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uint64_t total_sectors;
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unsigned int log_sector_size;
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};
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extern int biosdisk_read (void *disk, uint64_t sector, size_t len, void *buf);
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#endif /* defined(__i386__) || defined(__x86_64__) */
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extern void biosdisk_iterate (void);
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extern void biosdisk_fini (void);
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extern void biosdisk_init (void);
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#endif
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