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Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/gplinclude/disk/geom.h')
| -rw-r--r-- | contrib/syslinux/syslinux-4.03/com32/gplinclude/disk/geom.h | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/contrib/syslinux/syslinux-4.03/com32/gplinclude/disk/geom.h b/contrib/syslinux/syslinux-4.03/com32/gplinclude/disk/geom.h deleted file mode 100644 index 359c7cf..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/gplinclude/disk/geom.h +++ /dev/null @@ -1,326 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2009 Pierre-Alexandre Meyer - * - * Some parts borrowed from chain.c32: - * - * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Some parts borrowed from Linux: - * - * Copyright (C) 2002, 2003, 2004 Dell Inc. - * by Matt Domsch <Matt_Domsch@dell.com> - * - * This file is part of Syslinux, and is made available under - * the terms of the GNU General Public License version 2. - * - * ----------------------------------------------------------------------- */ - -#ifndef _GEOM_H_ -#define _GEOM_H_ - -#include <stdint.h> - -/** - * INT 13 Extensions - * - * Note: if the size is less than 30 on call, the final DWORD will not be - * returned by a v2.x implementation; similarly for the Device Path info - **/ -struct edd_device_parameters { - uint16_t len; /* size of returned data */ - /** - * Bitfields for IBM/MS INT 13 Extensions information flags: - * Bit(s) Description (Table 00274) - * 0 DMA boundary errors handled transparently - * 1 cylinder/head/sectors-per-track information is valid - * 2 removable drive - * 3 write with verify supported - * 4 drive has change-line support (required if drive >= 80h is removable) - * 5 drive can be locked (required if drive >= 80h is removable) - * 6 CHS information set to maximum supported values, not current media - * 15-7 reserved (0) - **/ - uint16_t info; /* information flags */ - uint32_t cylinders; /* number of physical cylinders on drive */ - uint32_t heads; /* number of physical heads on drive */ - uint32_t sectors_per_track; /* number of physical sectors per track */ - uint64_t sectors; /* total number of sectors on drive */ - uint16_t bytes_per_sector; /* bytes per sector */ - /* --- v2.0+ --- */ - uint32_t dpte_pointer; /* EDD configuration parameters, FFFFh:FFFFh if not available */ - /* --- v3.0 --- */ - uint16_t device_path_information; /* signature BEDDh to indicate presence of Device Path info */ - uint8_t device_path_length; /* length of Device Path information, including signature and this byte (24h for v3.0) */ - uint8_t device_path_reserved; /* reserved (0) */ - uint16_t device_path_reserved_2; /* reserved (0) */ - uint8_t host_bus_type[4]; /* ASCIZ name of host bus ("ISA" or "PCI") */ - uint8_t interface_type[8]; /* ASCIZ name of interface type - * "ATA" - * "ATAPI" - * "SCSI" - * "USB" - * "1394" IEEE 1394 (FireWire) - * "FIBRE" Fibre Channel - */ - /** - * Format of EDD v3.0 Interface Path: - * Offset Size Description (Table 00275) - * ---ISA--- - * 00h WORD 16-bit base address - * 02h 6 BYTEs reserved (0) - * ---PCI--- - * 00h BYTE PCI bus number - * 01h BYTE PCI device number - * 02h BYTE PCI function number - * 03h 5 BYTEs reserved (0) - **/ - union { - struct { - uint16_t base_address; - uint16_t reserved1; - uint32_t reserved2; - } __attribute__ ((packed)) isa; - struct { - uint8_t bus; - uint8_t slot; - uint8_t function; - uint8_t channel; - uint32_t reserved; - } __attribute__ ((packed)) pci; - /* pcix is same as pci */ - struct { - uint64_t reserved; - } __attribute__ ((packed)) ibnd; - struct { - uint64_t reserved; - } __attribute__ ((packed)) xprs; - struct { - uint64_t reserved; - } __attribute__ ((packed)) htpt; - struct { - uint64_t reserved; - } __attribute__ ((packed)) unknown; - } interface_path; - /** - * Format of EDD v3.0 Device Path: - * Offset Size Description (Table 00276) - * ---ATA--- - * 00h BYTE flag: 00h = master, 01h = slave - * 01h 7 BYTEs reserved (0) - * ---ATAPI--- - * 00h BYTE flag: 00h = master, 01h = slave - * 01h BYTE logical unit number - * 02h 6 BYTEs reserved (0) - * ---SCSI--- - * 00h BYTE logical unit number - * 01h 7 BYTEs reserved (0) - * ---USB--- - * 00h BYTE to be determined - * 01h 7 BYTEs reserved (0) - * ---IEEE1394--- - * 00h QWORD 64-bit FireWire General Unique Identifier (GUID) - * ---FibreChannel--- - * 00h QWORD Word Wide Number (WWN) - **/ - union { - struct { - uint8_t device; - uint8_t reserved1; - uint16_t reserved2; - uint32_t reserved3; - uint64_t reserved4; - } __attribute__ ((packed)) ata; - struct { - uint8_t device; - uint8_t lun; - uint8_t reserved1; - uint8_t reserved2; - uint32_t reserved3; - uint64_t reserved4; - } __attribute__ ((packed)) atapi; - struct { - uint16_t id; - uint64_t lun; - uint16_t reserved1; - uint32_t reserved2; - } __attribute__ ((packed)) scsi; - struct { - uint64_t serial_number; - uint64_t reserved; - } __attribute__ ((packed)) usb; - struct { - uint64_t eui; - uint64_t reserved; - } __attribute__ ((packed)) i1394; - struct { - uint64_t wwid; - uint64_t lun; - } __attribute__ ((packed)) fibre; - struct { - uint64_t identity_tag; - uint64_t reserved; - } __attribute__ ((packed)) i2o; - struct { - uint32_t array_number; - uint32_t reserved1; - uint64_t reserved2; - } __attribute__ ((packed)) raid; - struct { - uint8_t device; - uint8_t reserved1; - uint16_t reserved2; - uint32_t reserved3; - uint64_t reserved4; - } __attribute__ ((packed)) sata; - struct { - uint64_t reserved1; - uint64_t reserved2; - } __attribute__ ((packed)) unknown; - } device_path; - uint8_t reserved; /* reserved (0) */ - uint8_t checksum; /* checksum of bytes 1Eh-40h (two's complement of sum, which makes - * the 8-bit sum of bytes 1Eh-41h equal 00h) */ -} __attribute__ ((packed)); - -/* - * Disk parameters - */ -struct driveinfo { - int disk; /* Disk port (0x80 - 0xff) */ - /* Legacy C/H/S */ - int cbios; /* CHS geometry is valid */ - int legacy_max_head; - int legacy_max_cylinder; - int legacy_sectors_per_track; - int legacy_max_drive; - int legacy_type; /* Drive type (AT/PS2 floppies only) */ - /* EDD support */ - int ebios; /* EBIOS supported on this disk */ - int edd_version; /* EBIOS major version */ - int edd_functionality_subset; - struct edd_device_parameters edd_params; /* EDD parameters */ -}; - -/** - * Format of Phoenix Enhanced Disk Drive Spec translated drive parameter table: - * Offset Size Description (Table 00277) - * 00h WORD number of cylinders - * 02h BYTE number of heads - * 03h BYTE A0h (signature indicating translated table) - * 04h BYTE number of physical sectors per track - * 05h WORD starting write precompensation cylinder number - * 07h BYTE reserved - * 08h BYTE control byte (see #03198 at INT 41"DISK 0") - * 09h WORD number of physical cylinders - * 0Bh BYTE number of physical heads - * 0Ch WORD cylinder number of landing zone - * 0Eh BYTE number of logical sectors per track - * 0Fh BYTE checksum - * Program: the Phoenix Enhanced Disk Drive Specification is an addition to the - * IBM/MS INT 13 extensions - * - * Format of Phoenix Enhanced Disk Drive Spec Fixed Disk Parameter Table: - * Offset Size Description (Table 00278) - * 00h WORD physical I/O port base address - * 02h WORD disk-drive control port address - * 04h BYTE drive flags (see #00279) - * 05h BYTE proprietary information - * bits 7-4 reserved (0) - * bits 3-0: Phoenix proprietary (used by BIOS) - * 06h BYTE IRQ for drive (bits 3-0; bits 7-4 reserved and must be 0) - * 07h BYTE sector count for multi-sector transfers - * 08h BYTE DMA control - * bits 7-4: DMA type (0-2) as per ATA-2 specification - * bits 3-0: DMA channel - * 09h BYTE programmed I/O control - * bits 7-4: reserved (0) - * bits 3-0: PIO type (1-4) as per ATA-2 specification - * 0Ah WORD drive options (see #00280) - * 0Ch 2 BYTEs reserved (0) - * 0Eh BYTE extension revision level (high nybble=major, low nybble=minor) - * (currently 10h for v1.0 and 11h for v1.1-3.0) - * 0Fh BYTE 2's complement checksum of bytes 00h-0Eh - * 8-bit sum of all bytes 00h-0Fh should equal 00h - * SeeAlso: #00277 - * - * Bitfields for Phoenix Enhanced Disk Drive Spec drive flags: - * Bit(s) Description (Table 00279) - * 7 reserved (1) - * 6 LBA enabled - * 5 reserved (1) - * 4 drive is slave - * 3-0 reserved (0) - * SeeAlso: #00278,#00280 - * - * Bitfields for Phoenix Enhanced Disk Drive Spec drive options: - * Bit(s) Description (Table 00280) - * 0 fast PIO enabled - * 1 fast DMA access enabled - * 2 block PIO (multi-sector transfers) enabled - * 3 CHS translation enabled - * 4 LBA translation enabled - * 5 removable media - * 6 ATAPI device (CD-ROM) - * 7 32-bit transfer mode - * ---v1.1+ --- - * 8 ATAPI device uses DRQ to signal readiness for packet command - * (must be 0 if bit 6 is 0) - * 10-9 translation type (must be 00 if bit 3 is 0) - * 00 Phoenix bit-shifting translation - * 01 LBA-assisted translation - * 10 reserved - * 11 proprietary translation - * ---v3.0--- - * 11 Ultra DMA access enabled - * 15-12 reserved - **/ - -/* - * Values for diskette drive type: - * 01h 360K - * 02h 1.2M - * 03h 720K - * 04h 1.44M - * 05h ??? - * reportedly an obscure drive type shipped on some IBM machines, - * 2.88M on some machines (at least AMI 486 BIOS) - * 06h 2.88M - * 10h ATAPI Removable Media Device - */ -enum diskette_drive_types { - DISKETTE_360K = 1, - DISKETTE_1_2M = 2, - DISKETTE_720K = 3, - DISKETTE_1_44M = 4, - DISKETTE_2_88M = 6, - DISKETTE_ATAPI = 10, -}; - -/** - * chs_to_lba - compute lba value from cylinder, head and sector number - **/ -static inline int chs_to_lba(const struct driveinfo *drive_info, - const unsigned int cylinder, - const unsigned int head, const unsigned int sector) -{ - /* Use EDD, if valid */ - if (drive_info->edd_params.sectors_per_track > 0 && - drive_info->edd_params.heads > 0) - return (sector - 1) + - (head * drive_info->edd_params.sectors_per_track) + - (cylinder * (drive_info->edd_params.heads) * - drive_info->edd_params.sectors_per_track); - else if (drive_info->cbios) - return (sector - 1) + (head * drive_info->legacy_sectors_per_track) + - (cylinder * (drive_info->legacy_max_head + 1) * - drive_info->legacy_sectors_per_track); -} - -void lba_to_chs(const struct driveinfo *drive_info, const int lba, - unsigned int *cylinder, unsigned int *head, - unsigned int *sector); -int get_drive_parameters(struct driveinfo *drive_info); - -#endif /* _GEOM_H */ |