1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : Equates used in Enhanced INT 13h functions (EBIOS). |
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3 | |
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4 | ; |
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5 | ; XTIDE Universal BIOS and Associated Tools |
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6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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7 | ; |
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8 | ; This program is free software; you can redistribute it and/or modify |
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9 | ; it under the terms of the GNU General Public License as published by |
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10 | ; the Free Software Foundation; either version 2 of the License, or |
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11 | ; (at your option) any later version. |
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12 | ; |
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13 | ; This program is distributed in the hope that it will be useful, |
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14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | ; GNU General Public License for more details. |
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17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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18 | ; |
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19 | |
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20 | %ifndef EBIOS_INC |
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21 | %define EBIOS_INC |
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22 | |
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23 | ; EBIOS specification returned by INT 13h, AH=41h |
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24 | |
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25 | EDD_V1_1 EQU 21h ; 21h = EDD version 1.1 |
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26 | EBIOS_VERSION EQU EDD_V1_1 |
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27 | |
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28 | ; Support bits returned by INT 13h, AH=41h |
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29 | ENHANCED_DRIVE_ACCESS_SUPPORT EQU (1<<0) ; 41h, 42h, 43h 44h, 47h and 48h are available |
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30 | DRIVE_LOCKING_AND_EJECTING_SUPPORT EQU (1<<1) ; 41h, 45h, 46h, 48h, 49h are available and INT 15h, AH=52h |
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31 | ENHANCED_DISK_DRIVE_SUPPORT EQU (1<<2) ; 41h, 48h, 4Eh are available (EDD) |
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32 | |
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33 | |
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34 | ; Extended Drive Information returned by AH=48h |
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35 | struc EDRIVE_INFO |
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36 | .wSize resb 2 ; 0, Size of this buffer, at least 26 |
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37 | .wFlags resb 2 ; 2, Information flags |
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38 | .dwCylinders resb 4 ; 4, Total number of addressable cylinders |
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39 | .dwHeads resb 4 ; 8, Total number of addressable heads |
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40 | .dwSectorsPerTrack resb 4 ; 12, Number of sectors per track |
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41 | .qwTotalSectors resb 8 ; 16, Total number of addressable sectors |
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42 | .wSectorSize resb 2 ; 24, Number of bytes per sector |
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43 | .fpDPTE resb 4 ; 26, Optional pointer to Device Parameter Table Extension |
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44 | endstruc |
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45 | |
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46 | MINIMUM_EDRIVEINFO_SIZE EQU 26 ; 26 bytes does not include EDD pointer |
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47 | EDRIVEINFO_SIZE_WITH_DPTE EQU EDRIVE_INFO_size |
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48 | |
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49 | ; Flags for EDRIVE_INFO.wFlags |
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50 | FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS EQU (1<<0) |
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51 | FLG_CHS_INFORMATION_IS_VALID EQU (1<<1) |
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52 | FLG_REMOVABLE_DRIVE EQU (1<<2) |
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53 | FLG_WRITE_WITH_VERIFY_SUPPORTED EQU (1<<3) |
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54 | FLG_CHANGE_LINE_SUPPORT EQU (1<<4) ; Removable media only |
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55 | FLG_LOCKABLE EQU (1<<5) ; Removable media only |
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56 | FLG_NO_MEDIA_PRESENT_AND_CHS_SET_TO_MAX EQU (1<<6) ; Removable media only |
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57 | |
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58 | |
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59 | ; Device Parameter Table Extension |
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60 | struc DPTE |
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61 | .wBasePort resb 2 ; 0, Command Block Base Port Address |
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62 | .wControlBlockPort resb 2 ; 2, Control Block Base Port Address |
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63 | .bDrvnhead resb 1 ; 4, Drive and Head Select Register upper nibble |
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64 | .bBiosVendor resb 1 ; 5, BIOS Vendor Specific |
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65 | .bIRQ resb 1 ; 6, IRQ for this device |
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66 | .bBlockSize resb 1 ; 7, Current block size in sectors |
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67 | .bDmaChannelAndType resb 1 ; 8, DMA information |
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68 | .bPioMode resb 1 ; 9, PIO mode |
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69 | .wFlags resb 2 ; 10, BIOS selected hardware specific option flags |
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70 | .wReserved resb 2 ; 12, Reserved. Must be zero. |
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71 | .bRevision resb 1 ; 14, Revision level of this table (11h) |
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72 | .bChecksum resb 1 ; 15, Checksum, 2's complement of the sum of bytes 0-14 |
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73 | endstruc |
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74 | |
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75 | ; Flags for DPTE.wFlags |
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76 | FLG_FAST_PIO_ENABLED EQU (1<<0) ; Set if using PIO mode 1 or above (DPTE.bPioMode is valid when set) |
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77 | FLG_DMA_ENABLED EQU (1<<1) ; Set if DMA enabled (DPTE.bDmaChannelAndType is valid when set) |
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78 | FLG_BLOCK_MODE_ENABLED EQU (1<<2) ; Set if Block Mode transfers are enabled (DPTE.bBlockSize is valid when set) |
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79 | FLG_CHS_TRANSLATION_ENABLED EQU (1<<3) ; Set for drives with more than 1024 cylinders |
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80 | FLG_LBA_TRANSLATION_ENABLED EQU (1<<4) ; Set when LBA addresses from DAP are passed directly to the drive |
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81 | FLG_REMOVABLE_MEDIA EQU (1<<5) |
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82 | FLG_ATAPI_DEVICE EQU (1<<6) |
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83 | FLG_32BIT_XFER_MODE EQU (1<<7) ; Set when using 32-bit data transfers |
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84 | FLG_ATAPI_USES_IRQ EQU (1<<8) ; ATAPI Device uses IRQ for data transfers |
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85 | ; L-CHS translation type for old INT 13h (when FLG_CHS_TRANSLATION_ENABLED is set) |
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86 | MASK_CHS_TRANSLATION_TYPE EQU (3<<TRANSLATION_TYPE_FIELD_POSITION) |
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87 | TRANSLATION_TYPE_FIELD_POSITION EQU 9 |
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88 | BIT_SHIFT_TRANSLATION EQU 0 ; LARGE |
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89 | LBA_ASSISTED_TRANSLATION EQU 1 ; Assisted LBA |
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90 | ; 2 = reserved |
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91 | VENDOR_SPECIFIC_TRANSLATION EQU 3 |
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92 | |
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93 | |
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94 | DPTE_REVISION EQU 11h |
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95 | |
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96 | |
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97 | ; Disk Address Packet for read, write and verify functions |
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98 | struc DAP |
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99 | .bSize resb 1 ; 0, Size of this packet in bytes |
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100 | .bReservedAt1 resb 1 ; 1, Currently unused, must be zero |
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101 | .wSectorCount resb 2 ; 2, Number of sectors to process (0...127) |
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102 | .dwMemoryAddress: |
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103 | .wOffset resb 2 ; 4, Memory offset for transfer |
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104 | .wSegment resb 2 ; 6, Memory segment for transfer |
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105 | .qwLBA resb 8 ; 8, Starting sector for transfer |
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106 | endstruc |
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107 | |
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108 | MINIMUM_DAP_SIZE EQU 16 |
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109 | |
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110 | |
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111 | %endif ; EBIOS_INC |
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