| 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : Defines for ROMVARS struct containing variables stored
|
|---|
| 3 | ; in BIOS ROM.
|
|---|
| 4 |
|
|---|
| 5 | ;
|
|---|
| 6 | ; XTIDE Universal BIOS and Associated Tools
|
|---|
| 7 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 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 |
|
|---|
| 21 | %ifndef ROMVARS_INC
|
|---|
| 22 | %define ROMVARS_INC
|
|---|
| 23 |
|
|---|
| 24 | ; ROM Variables. Written to the ROM image before flashing.
|
|---|
| 25 | struc ROMVARS
|
|---|
| 26 | .wRomSign resb 2 ; ROM Signature (AA55h)
|
|---|
| 27 | .bRomSize resb 1 ; ROM size in 512 byte blocks
|
|---|
| 28 | .rgbJump resb 3 ; First instruction to ROM init (jmp)
|
|---|
| 29 |
|
|---|
| 30 | .rgbSign resb 8 ; Signature for XTIDE Configurator Program
|
|---|
| 31 | .szTitle resb 31 ; BIOS title string
|
|---|
| 32 | .szVersion resb 25 ; BIOS version string
|
|---|
| 33 |
|
|---|
| 34 | .wFlags resb 2 ; Word for ROM flags
|
|---|
| 35 | .wDisplayMode resb 2 ; Display mode for boot menu
|
|---|
| 36 | .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks
|
|---|
| 37 | .bIdeCnt resb 1 ; Number of available IDE controllers
|
|---|
| 38 | .bBootDrv resb 1 ; Default drive to boot from
|
|---|
| 39 | .bMinFddCnt resb 1 ; Minimum number of Floppy Drives
|
|---|
| 40 | .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM
|
|---|
| 41 | .bIdleTimeout resb 1 ; Standby timer value
|
|---|
| 42 |
|
|---|
| 43 | .ideVarsBegin:
|
|---|
| 44 | .ideVars0 resb IDEVARS_size
|
|---|
| 45 | .ideVars1 resb IDEVARS_size
|
|---|
| 46 | .ideVars2 resb IDEVARS_size
|
|---|
| 47 | .ideVars3 resb IDEVARS_size
|
|---|
| 48 |
|
|---|
| 49 | %ifdef MODULE_SERIAL
|
|---|
| 50 | .ideVarsSerialAuto resb IDEVARS_size
|
|---|
| 51 | %endif
|
|---|
| 52 |
|
|---|
| 53 | .ideVarsEnd:
|
|---|
| 54 | endstruc
|
|---|
| 55 |
|
|---|
| 56 | %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
|
|---|
| 57 | %if ROMVARS.ideVarsEnd & 0xff00 <> 0
|
|---|
| 58 | %error ".ideVars structures must fit within the first 256 bytes of the ROM image"
|
|---|
| 59 | %endif
|
|---|
| 60 | %if (ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin) = 0
|
|---|
| 61 | %error "there must be at least one .ideVars structure, it would be bizarre if this were not true, but it is assumed in the ah0h reset code."
|
|---|
| 62 | %endif
|
|---|
| 63 | %endif
|
|---|
| 64 |
|
|---|
| 65 | NUMBER_OF_IDEVARS EQU ((ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin) / IDEVARS_size)
|
|---|
| 66 |
|
|---|
| 67 | ; Bit defines for ROMVARS.wFlags
|
|---|
| 68 | FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.)
|
|---|
| 69 | FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked
|
|---|
| 70 | ; by holding down the ALT key at the end of drive detection.
|
|---|
| 71 | ; (Conveniently, this is 8, a fact we exploit when testing the bit)
|
|---|
| 72 |
|
|---|
| 73 | ; Here in case the configuration needs to know functionality is present
|
|---|
| 74 | FLG_ROMVARS_MODULE_FEATURE_SETS EQU (1<<5)
|
|---|
| 75 | FLG_ROMVARS_MODULE_8BIT_IDE EQU (1<<6)
|
|---|
| 76 | FLG_ROMVARS_MODULE_8BIT_IDE_ADVANCED EQU (1<<7)
|
|---|
| 77 | FLG_ROMVARS_MODULE_ADVANCED_ATA EQU (1<<8)
|
|---|
| 78 | FLG_ROMVARS_MODULE_BOOT_MENU EQU (1<<9)
|
|---|
| 79 | FLG_ROMVARS_MODULE_EBIOS EQU (1<<10)
|
|---|
| 80 | FLG_ROMVARS_MODULE_HOTKEYS EQU (1<<11)
|
|---|
| 81 | FLG_ROMVARS_MODULE_IRQ EQU (1<<12)
|
|---|
| 82 | FLG_ROMVARS_MODULE_SERIAL EQU (1<<13)
|
|---|
| 83 | FLG_ROMVARS_MODULE_SERIAL_FLOPPY EQU (1<<14)
|
|---|
| 84 | FLG_ROMVARS_MODULE_STRINGS_COMPRESSED EQU (1<<15)
|
|---|
| 85 |
|
|---|
| 86 |
|
|---|
| 87 | ; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
|
|---|
| 88 | DEFAULT_TEXT_MODE EQU 4
|
|---|
| 89 |
|
|---|
| 90 |
|
|---|
| 91 | ; Controller specific variables
|
|---|
| 92 | struc IDEVARS
|
|---|
| 93 | ;;; Word 0
|
|---|
| 94 | .wSerialPortAndBaud: ; Serial connection port (low, divided by 4) and baud rate divisor (high)
|
|---|
| 95 | .wBasePort: ; IDE Base Port for Command Block (usual) Registers
|
|---|
| 96 | .bSerialPort resb 1
|
|---|
| 97 | .bSerialBaud resb 1
|
|---|
| 98 |
|
|---|
| 99 | ;;; Word 1
|
|---|
| 100 | .wControlBlockPort:
|
|---|
| 101 | .bXTCFcontrolRegister: ; XT-CF autodetects ports
|
|---|
| 102 | .bSerialUnused resb 1 ; IDE Base Port for Control Block Registers
|
|---|
| 103 |
|
|---|
| 104 | .wSerialCOMPortCharAndDevice: ; In DetectPrint, we grab the COM Port char and Device at the same time
|
|---|
| 105 | .bSerialCOMPortChar resb 1 ; Serial connection COM port number/letter
|
|---|
| 106 |
|
|---|
| 107 | ;;; Word 2
|
|---|
| 108 | .bDevice resb 1 ; Device type
|
|---|
| 109 | .bIRQ resb 1 ; Interrupt Request Number
|
|---|
| 110 |
|
|---|
| 111 | ;;; And more...
|
|---|
| 112 | .drvParamsMaster resb DRVPARAMS_size
|
|---|
| 113 | .drvParamsSlave resb DRVPARAMS_size
|
|---|
| 114 | endstruc
|
|---|
| 115 |
|
|---|
| 116 | %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
|
|---|
| 117 | %if IDEVARS.bSerialCOMPortChar+1 != IDEVARS.bDevice
|
|---|
| 118 | %error "IDEVARS.bSerialCOMPortChar needs to come immediately before IDEVARS.bDevice so that both bytes can be fetched at the same time inside DetectPrint.asm"
|
|---|
| 119 | %endif
|
|---|
| 120 | %endif
|
|---|
| 121 |
|
|---|
| 122 | STANDARD_CONTROL_BLOCK_OFFSET EQU 200h
|
|---|
| 123 | XTIDE_CONTROL_BLOCK_OFFSET EQU 8h
|
|---|
| 124 | XTCF_CONTROL_BLOCK_OFFSET EQU 10h
|
|---|
| 125 | ADP50L_CONTROL_BLOCK_OFFSET EQU 10h
|
|---|
| 126 |
|
|---|
| 127 | ; Default values for Port and PortCtrl, shared with the configurator
|
|---|
| 128 | ;
|
|---|
| 129 | DEVICE_XTIDE_DEFAULT_PORT EQU 300h
|
|---|
| 130 | DEVICE_XTIDE_DEFAULT_PORTCTRL EQU (DEVICE_XTIDE_DEFAULT_PORT + XTIDE_CONTROL_BLOCK_OFFSET)
|
|---|
| 131 |
|
|---|
| 132 | DEVICE_ATA_PRIMARY_PORT EQU 1F0h
|
|---|
| 133 | DEVICE_ATA_PRIMARY_PORTCTRL EQU (DEVICE_ATA_PRIMARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET)
|
|---|
| 134 |
|
|---|
| 135 | DEVICE_ATA_SECONDARY_PORT EQU 170h
|
|---|
| 136 | DEVICE_ATA_SECONDARY_PORTCTRL EQU (DEVICE_ATA_SECONDARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET)
|
|---|
| 137 |
|
|---|
| 138 | DEVICE_ATA_TERTIARY_PORT EQU 1E8h
|
|---|
| 139 | DEVICE_ATA_TERTIARY_PORTCTRL EQU (DEVICE_ATA_TERTIARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET)
|
|---|
| 140 |
|
|---|
| 141 | DEVICE_ATA_QUATERNARY_PORT EQU 168h
|
|---|
| 142 | DEVICE_ATA_QUATERNARY_PORTCTRL EQU (DEVICE_ATA_QUATERNARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET)
|
|---|
| 143 |
|
|---|
| 144 |
|
|---|
| 145 | ; Device types for IDEVARS.bDevice
|
|---|
| 146 | ; IDE Devices are grouped so device numbers cannot be changed without modifying code elsewhere!
|
|---|
| 147 | ;
|
|---|
| 148 | COUNT_OF_STANDARD_IDE_DEVICES EQU 2 ; 16- and 32-bit controllers
|
|---|
| 149 | COUNT_OF_8BIT_IDE_DEVICES EQU 8
|
|---|
| 150 | COUNT_OF_ALL_IDE_DEVICES EQU (COUNT_OF_8BIT_IDE_DEVICES + COUNT_OF_STANDARD_IDE_DEVICES)
|
|---|
| 151 | ; Standard port mapped I/O
|
|---|
| 152 | DEVICE_16BIT_ATA EQU (0<<1)
|
|---|
| 153 | DEVICE_32BIT_ATA EQU (1<<1)
|
|---|
| 154 | DEVICE_8BIT_ATA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+0)<<1) ; 16- or 32-bit controller in 8-bit mode
|
|---|
| 155 | DEVICE_8BIT_XTIDE_REV1 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+1)<<1)
|
|---|
| 156 | ; Address lines A0 and A3 are swapped
|
|---|
| 157 | DEVICE_8BIT_XTIDE_REV2 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+2)<<1) ; Or rev 1 with swapped A0 and A3
|
|---|
| 158 | ; IDE Register offsets are SHL 1
|
|---|
| 159 | DEVICE_8BIT_XTCF_PIO8 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+3)<<1) ; XT-CF using 8-bit PIO mode
|
|---|
| 160 | DEVICE_8BIT_XTCF_DMA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+4)<<1) ; XT-CF using DMA
|
|---|
| 161 | DEVICE_8BIT_XTCF_MEMMAP EQU ((COUNT_OF_STANDARD_IDE_DEVICES+5)<<1) ; XT-CF using Memory Mapped transfers (not I/O)
|
|---|
| 162 | ; Memory Mapped I/O
|
|---|
| 163 | DEVICE_8BIT_JRIDE_ISA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+6)<<1) ; JR-IDE/ISA (Memory Mapped I/O)
|
|---|
| 164 | DEVICE_8BIT_ADP50L EQU ((COUNT_OF_STANDARD_IDE_DEVICES+7)<<1) ; SVC ADP50L (Memory Mapped I/O)
|
|---|
| 165 | ; Virtual devices
|
|---|
| 166 | DEVICE_SERIAL_PORT EQU (COUNT_OF_ALL_IDE_DEVICES<<1)
|
|---|
| 167 |
|
|---|
| 168 |
|
|---|
| 169 |
|
|---|
| 170 | ; Master/Slave drive specific parameters
|
|---|
| 171 | struc DRVPARAMS
|
|---|
| 172 | .wFlags resb 2 ; Drive flags
|
|---|
| 173 | .dwMaximumLBA: ; User specified maximum number of sectors
|
|---|
| 174 | .wCylinders resb 2 ; User specified cylinders (1...16383)
|
|---|
| 175 | .wHeadsAndSectors:
|
|---|
| 176 | .bHeads resb 1 ; User specified Heads (1...16)
|
|---|
| 177 | .bSect resb 1 ; User specified Sectors per track (1...63)
|
|---|
| 178 | endstruc
|
|---|
| 179 |
|
|---|
| 180 | ; Bit defines for DRVPARAMS.wFlags
|
|---|
| 181 | MASK_DRVPARAMS_WRITECACHE EQU (3<<0) ; Bits 0...1, Drive internal write cache settings (must start at bit 0)
|
|---|
| 182 | DEFAULT_WRITE_CACHE EQU 0 ; Must be 0
|
|---|
| 183 | DISABLE_WRITE_CACHE EQU 1
|
|---|
| 184 | ENABLE_WRITE_CACHE EQU 2
|
|---|
| 185 | MASK_DRVPARAMS_TRANSLATEMODE EQU (3<<TRANSLATEMODE_FIELD_POSITION) ; Bits 2...3, Position shared with DPT
|
|---|
| 186 | TRANSLATEMODE_FIELD_POSITION EQU 2
|
|---|
| 187 | TRANSLATEMODE_NORMAL EQU 0 ; Must be zero
|
|---|
| 188 | TRANSLATEMODE_LARGE EQU 1
|
|---|
| 189 | TRANSLATEMODE_ASSISTED_LBA EQU 2 ; 28-bit or 48-bit LBA
|
|---|
| 190 | TRANSLATEMODE_AUTO EQU 3 ; Only available in ROMVARS, not in DPTs
|
|---|
| 191 | FLG_DRVPARAMS_BLOCKMODE EQU (1<<4) ; Enable Block mode transfers
|
|---|
| 192 | FLG_DRVPARAMS_USERCHS EQU (1<<5) ; User specified P-CHS values
|
|---|
| 193 | MAX_USER_CYLINDERS EQU 16383
|
|---|
| 194 | MAX_USER_HEADS EQU 16
|
|---|
| 195 | MAX_USER_SECTORS_PER_TRACK EQU 63
|
|---|
| 196 | FLG_DRVPARAMS_USERLBA EQU (1<<6) ; User specified LBA value
|
|---|
| 197 | MIN_USER_LBA_COUNT EQU ((MAX_USER_CYLINDERS*MAX_USER_HEADS*MAX_USER_SECTORS_PER_TRACK)+1)
|
|---|
| 198 | MAX_USER_LBA_COUNT EQU ((2^28)-1)
|
|---|
| 199 |
|
|---|
| 200 |
|
|---|
| 201 | %endif ; ROMVARS_INC
|
|---|
