| [99] | 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| [3] | 2 | ; Description : Defines for DPT structs containing custom
|
|---|
| 3 | ; Disk Parameter Table used by this BIOS.
|
|---|
| [376] | 4 |
|
|---|
| 5 | ;
|
|---|
| 6 | ; XTIDE Universal BIOS and Associated Tools
|
|---|
| 7 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
|
|---|
| 8 | ;
|
|---|
| 9 | ; This program is free software; you can redistribute it and/or modify
|
|---|
| 10 | ; it under the terms of the GNU General Public License as published by
|
|---|
| 11 | ; the Free Software Foundation; either version 2 of the License, or
|
|---|
| 12 | ; (at your option) any later version.
|
|---|
| 13 | ;
|
|---|
| 14 | ; This program is distributed in the hope that it will be useful,
|
|---|
| 15 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 16 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 17 | ; GNU General Public License for more details.
|
|---|
| 18 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|---|
| 19 | ;
|
|---|
| 20 |
|
|---|
| [3] | 21 | %ifndef CUSTOMDPT_INC
|
|---|
| 22 | %define CUSTOMDPT_INC
|
|---|
| 23 |
|
|---|
| [150] | 24 | ; Base DPT for all device types
|
|---|
| [173] | 25 | struc DPT ; 10 bytes
|
|---|
| [3] | 26 | ; General Disk Parameter Table related
|
|---|
| [158] | 27 | .wFlags:
|
|---|
| 28 | .bFlagsLow resb 1
|
|---|
| 29 | .bFlagsHigh resb 1
|
|---|
| [150] | 30 | .bIdevarsOffset resb 1 ; Offset to IDEVARS for this drive
|
|---|
| [3] | 31 |
|
|---|
| [150] | 32 | ; IDE Drive related
|
|---|
| [238] | 33 | ; .bLbaHeads and .twLbaSectors are used for LBA addressing only.
|
|---|
| [237] | 34 | .bLbaHeads: resb 1 ; Number of LBA assisted heads (1...255)
|
|---|
| [227] | 35 | .twLbaSectors resb 2 ; 48-bit sector count for LBA addressing
|
|---|
| [238] | 36 |
|
|---|
| 37 | ; .wPchsCylinders and .bPchsSectors are used for CHS addressing only.
|
|---|
| [227] | 38 | .wPchsCylinders resb 2 ; Number of P-CHS Cylinders (1...16383)
|
|---|
| 39 | .wPchsHeadsAndSectors:
|
|---|
| 40 | .bPchsHeads resb 1 ; Number of P-CHS heads (1...16)
|
|---|
| 41 | .bPchsSectors resb 1 ; Number of P-CHS Sectors per Track (1...63)
|
|---|
| [150] | 42 | endstruc
|
|---|
| [3] | 43 |
|
|---|
| [158] | 44 | ; Bit definitions for DPT.bFlagsLow
|
|---|
| 45 | MASKL_DPT_CHS_SHIFT_COUNT EQU (7<<0) ; Bits 0...3, P-CHS to L-CHS bit shift count (0...4)
|
|---|
| 46 | FLGL_DPT_SLAVE EQU FLG_DRVNHEAD_DRV ; (1<<4), Drive is slave drive
|
|---|
| 47 | MASKL_DPT_ADDRESSING_MODE EQU (3<<5) ; Bits 5..6, Addressing Mode (bit 6 == FLG_DRVNHEAD_LBA)
|
|---|
| 48 | FLGL_DPT_ENABLE_IRQ EQU (1<<7)
|
|---|
| [3] | 49 |
|
|---|
| [158] | 50 | ; Bit definitions for DPT.bFlagsHigh
|
|---|
| 51 | FLGH_DPT_REVERSED_A0_AND_A3 EQU (1<<0) ; XTIDE mod, Address lines 0 and 3 reversed
|
|---|
| [165] | 52 | FLGH_DPT_BLOCK_MODE_SUPPORTED EQU (1<<1) ; Use block transfer commands (must be bit 1!)
|
|---|
| [175] | 53 | %ifdef MODULE_SERIAL
|
|---|
| [165] | 54 | FLGH_DPT_SERIAL_DEVICE EQU (1<<2) ; Serial Port Device
|
|---|
| [175] | 55 | %endif
|
|---|
| [158] | 56 | FLGH_DPT_INTERRUPT_IN_SERVICE EQU (1<<3) ; Set when waiting for IRQ
|
|---|
| 57 |
|
|---|
| [363] | 58 | ; IDE device only
|
|---|
| [364] | 59 | %ifdef MODULE_ADVANCED_ATA
|
|---|
| [365] | 60 | FLGH_DPT_IORDY EQU (1<<7) ; Controller and Drive supports IORDY
|
|---|
| [364] | 61 | %endif
|
|---|
| [363] | 62 |
|
|---|
| 63 | ; Serial device only
|
|---|
| [258] | 64 | FLGH_DPT_SERIAL_FLOPPY EQU (1<<4)
|
|---|
| 65 | FLGH_DPT_SERIAL_FLOPPY_TYPE_MASK EQU 0e0h
|
|---|
| 66 | FLGH_DPT_SERIAL_FLOPPY_TYPE_FIELD_POSITION EQU 5
|
|---|
| 67 |
|
|---|
| [150] | 68 | ; Addressing modes for DPT.wFlags
|
|---|
| 69 | ADDRESSING_MODE_FIELD_POSITION EQU 5
|
|---|
| 70 | ADDRESSING_MODE_LCHS EQU 0 ; L-CHS Addressing Mode (NORMAL in many other BIOSes)
|
|---|
| 71 | ADDRESSING_MODE_PCHS EQU 1 ; P-CHS Addressing Mode (LARGE in many other BIOSes)
|
|---|
| 72 | ADDRESSING_MODE_LBA28 EQU 2 ; 28-bit LBA Addressing Mode
|
|---|
| 73 | ADDRESSING_MODE_LBA48 EQU 3 ; 48-bit LBA Addressing Mode
|
|---|
| [3] | 74 |
|
|---|
| [363] | 75 |
|
|---|
| 76 | ; DPT for ATA devices
|
|---|
| 77 | struc DPT_ATA ; 10 + 2 bytes = 12 bytes
|
|---|
| 78 | .dpt resb DPT_size
|
|---|
| [365] | 79 | .bBlockSize resb 1 ; Current block size in sectors (do not set to zero!)
|
|---|
| 80 | .bInitError resb 1
|
|---|
| [363] | 81 | endstruc
|
|---|
| 82 |
|
|---|
| [365] | 83 | ; Flags for BOOTMENUINFO.wInitErrorFlags
|
|---|
| 84 | FLG_INITERROR_FAILED_TO_SELECT_DRIVE EQU (1<<0)
|
|---|
| 85 | FLG_INITERROR_FAILED_TO_INITIALIZE_CHS_PARAMETERS EQU (1<<1)
|
|---|
| 86 | FLG_INITERROR_FAILED_TO_SET_WRITE_CACHE EQU (1<<2)
|
|---|
| 87 | FLG_INITERROR_FAILED_TO_RECALIBRATE_DRIVE EQU (1<<3)
|
|---|
| 88 | FLG_INITERROR_FAILED_TO_SET_BLOCK_MODE EQU (1<<4)
|
|---|
| 89 | FLG_INITERROR_FAILED_TO_SET_PIO_MODE EQU (1<<5)
|
|---|
| [363] | 90 |
|
|---|
| [365] | 91 |
|
|---|
| [364] | 92 | ; Additional variables needed to initialize and reset Advanced IDE Controllers.
|
|---|
| 93 | ; EBDA must be reserved for DPTs when using these!
|
|---|
| [363] | 94 | %ifdef MODULE_ADVANCED_ATA
|
|---|
| 95 | struc DPT_ADVANCED_ATA
|
|---|
| 96 | .dpt_ata resb DPT_ATA_size
|
|---|
| [364] | 97 | .wControllerID resb 2 ; Controller specific ID WORD (from Advanced Controller detection)
|
|---|
| [363] | 98 | .wControllerBasePort resb 2 ; Advanced Controller port (not IDE port)
|
|---|
| [364] | 99 | .wMinPioCycleTime resb 2 ; Minimum PIO Cycle Time in ns
|
|---|
| 100 | .bPioMode resb 1 ; Best supported PIO mode
|
|---|
| 101 | .bDevice resb 1 ; Device Type from IDEVARS (overrided when 32-bit controller detected)
|
|---|
| [363] | 102 | endstruc
|
|---|
| 103 | %endif
|
|---|
| 104 |
|
|---|
| 105 |
|
|---|
| [364] | 106 | ; DPT for Serial devices
|
|---|
| [363] | 107 | %ifdef MODULE_SERIAL
|
|---|
| 108 | struc DPT_SERIAL
|
|---|
| 109 | .dpt resb DPT_size
|
|---|
| 110 | .wSerialPortAndBaud:
|
|---|
| 111 | .bSerialPort resb 1 ; Serial connection I/O port address, divided by 4
|
|---|
| 112 | .bSerialBaud resb 1 ; Serial connection baud rate divisor
|
|---|
| 113 | endstruc
|
|---|
| 114 | %endif
|
|---|
| 115 |
|
|---|
| 116 |
|
|---|
| 117 | ; This is the common size for all DPTs. All DPTs must be equal size.
|
|---|
| [364] | 118 | %ifdef MODULE_ADVANCED_ATA
|
|---|
| 119 | LARGEST_DPT_SIZE EQU DPT_ADVANCED_ATA_size
|
|---|
| 120 | %else
|
|---|
| [363] | 121 | LARGEST_DPT_SIZE EQU DPT_ATA_size
|
|---|
| [364] | 122 | %endif
|
|---|
| [363] | 123 |
|
|---|
| 124 |
|
|---|
| [173] | 125 | ; Number of Sectors per Track is fixed to 63 for LBA assist calculation.
|
|---|
| 126 | ; 1024 cylinders, 256 heads, 63 sectors = 8.4 GB limit (but DOS does not support more than 255 heads)
|
|---|
| 127 | MAX_LCHS_CYLINDERS EQU 1024
|
|---|
| 128 | LBA_ASSIST_SPT EQU 63
|
|---|
| [3] | 129 |
|
|---|
| [173] | 130 |
|
|---|
| [358] | 131 | ;--------------------------------------------------------------------
|
|---|
| 132 | ; LIMIT_LBA_CYLINDERS_IN_DXAX_TO_LCHS_CYLINDERS
|
|---|
| 133 | ; Parameters:
|
|---|
| 134 | ; DX:AX: Number of LBA cylinders
|
|---|
| 135 | ; Returns:
|
|---|
| 136 | ; AX: Number of L-CHS cylinders
|
|---|
| 137 | ; Corrupts registers:
|
|---|
| 138 | ; Nothing
|
|---|
| 139 | ;--------------------------------------------------------------------
|
|---|
| 140 | %macro LIMIT_LBA_CYLINDERS_IN_DXAX_TO_LCHS_CYLINDERS 0
|
|---|
| 141 | test dx, dx
|
|---|
| 142 | jnz SHORT %%LoadMaxValueToAX
|
|---|
| 143 | cmp ax, MAX_LCHS_CYLINDERS
|
|---|
| [370] | 144 | jb SHORT %%NoNeedToModify
|
|---|
| [358] | 145 | %%LoadMaxValueToAX:
|
|---|
| 146 | mov ax, MAX_LCHS_CYLINDERS
|
|---|
| 147 | %%NoNeedToModify:
|
|---|
| 148 | %endmacro
|
|---|
| 149 |
|
|---|
| 150 |
|
|---|
| [3] | 151 | %endif ; CUSTOMDPT_INC
|
|---|
