mirror of
https://github.com/grub4dos/ntloader.git
synced 2025-05-08 19:51:14 +08:00
4512426e9a
* import wimboot v28 * remove -Wno-array-bounds * addd * reg * cmline * charset * update bcd.bat * reg prefix * fix * bcd * rootfs * fsuuid * vdisk * partmap * biosdisk * efidisk * efi * fix * fix * fix reg * fix bcd * bcd * initrd * payload
147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
#ifndef _INT13_H
|
|
#define _INT13_H
|
|
|
|
/*
|
|
* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
*
|
|
* INT 13 emulation
|
|
*
|
|
*/
|
|
|
|
/** Absolute Pointer
|
|
* The ABS_PTR() macro borrows the idea from Linux kernel of using
|
|
* RELOC_HIDE() macro to stop GCC from checking the result of pointer arithmetic
|
|
* and also it's conversion to be inside the symbol's boundary [1]. The check
|
|
* is sometimes false positive, especially it is controversial to emit the array
|
|
* bounds [-Warray-bounds] warning on all hardwired literal pointers since GCC
|
|
* 11/12 [2]. Unless a good solution can be settled, for the time being we
|
|
* would be in favor of the macro instead of GCC pragmas which cannot match the
|
|
* places the warning needs to be ignored in an exact way.
|
|
*
|
|
* [1] https://lists.linuxcoding.com/kernel/2006-q3/msg17979.html
|
|
* [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578
|
|
*/
|
|
#if defined(__GNUC__)
|
|
# define ABS_PTR(val) \
|
|
({ \
|
|
intptr_t __ptr; \
|
|
asm ("" : "=r" (__ptr) : "0" ((void *) (intptr_t) (val))); \
|
|
(void *) (__ptr); \
|
|
})
|
|
#else
|
|
# define ABS_PTR(val) ((void *) (intptr_t) (val))
|
|
#endif
|
|
|
|
/** Construct a pointer from a real-mode segment:offset address */
|
|
#define REAL_PTR(segment, offset) \
|
|
(ABS_PTR (((segment) << 4) + offset))
|
|
|
|
/** Get drive parameters */
|
|
#define INT13_GET_PARAMETERS 0x08
|
|
/** Get disk type */
|
|
#define INT13_GET_DISK_TYPE 0x15
|
|
/** Extensions installation check */
|
|
#define INT13_EXTENSION_CHECK 0x41
|
|
/** Extended read */
|
|
#define INT13_EXTENDED_READ 0x42
|
|
/** Get extended drive parameters */
|
|
#define INT13_GET_EXTENDED_PARAMETERS 0x48
|
|
|
|
/** Operation completed successfully */
|
|
#define INT13_STATUS_SUCCESS 0x00
|
|
/** Invalid function or parameter */
|
|
#define INT13_STATUS_INVALID 0x01
|
|
/** Read error */
|
|
#define INT13_STATUS_READ_ERROR 0x04
|
|
/** Reset failed */
|
|
#define INT13_STATUS_RESET_FAILED 0x05
|
|
/** Write error */
|
|
#define INT13_STATUS_WRITE_ERROR 0xcc
|
|
|
|
/** No such drive */
|
|
#define INT13_DISK_TYPE_NONE 0x00
|
|
/** Floppy without change-line support */
|
|
#define INT13_DISK_TYPE_FDD 0x01
|
|
/** Floppy with change-line support */
|
|
#define INT13_DISK_TYPE_FDD_CL 0x02
|
|
/** Hard disk */
|
|
#define INT13_DISK_TYPE_HDD 0x03
|
|
|
|
/** Extended disk access functions supported */
|
|
#define INT13_EXTENSION_LINEAR 0x01
|
|
|
|
/** INT13 extensions version 1.x */
|
|
#define INT13_EXTENSION_VER_1_X 0x01
|
|
|
|
/** DMA boundary errors handled transparently */
|
|
#define INT13_FL_DMA_TRANSPARENT 0x01
|
|
|
|
/** BIOS drive counter */
|
|
#define INT13_DRIVE_COUNT (*(((uint8_t *) REAL_PTR (0x40, 0x75))))
|
|
|
|
/** An INT 13 disk address packet */
|
|
struct int13_disk_address
|
|
{
|
|
/** Size of the packet, in bytes */
|
|
uint8_t bufsize;
|
|
/** Reserved */
|
|
uint8_t reserved_a;
|
|
/** Block count */
|
|
uint8_t count;
|
|
/** Reserved */
|
|
uint8_t reserved_b;
|
|
/** Data buffer */
|
|
struct segoff buffer;
|
|
/** Starting block number */
|
|
uint64_t lba;
|
|
/** Data buffer (EDD 3.0+ only) */
|
|
uint64_t buffer_phys;
|
|
/** Block count (EDD 4.0+ only) */
|
|
uint32_t long_count;
|
|
/** Reserved */
|
|
uint32_t reserved_c;
|
|
} __attribute__ ((packed));
|
|
|
|
/** INT 13 disk parameters */
|
|
struct int13_disk_parameters
|
|
{
|
|
/** Size of this structure */
|
|
uint16_t bufsize;
|
|
/** Flags */
|
|
uint16_t flags;
|
|
/** Number of cylinders */
|
|
uint32_t cylinders;
|
|
/** Number of heads */
|
|
uint32_t heads;
|
|
/** Number of sectors per track */
|
|
uint32_t sectors_per_track;
|
|
/** Total number of sectors on drive */
|
|
uint64_t sectors;
|
|
/** Bytes per sector */
|
|
uint16_t sector_size;
|
|
} __attribute__ ((packed));
|
|
|
|
extern int initialise_int13 (void);
|
|
extern void emulate_int13 (struct bootapp_callback_params *params);
|
|
|
|
#endif /* _INT13_H */
|