; Project name : XTIDE Universal BIOS ; Description : Defines for ROMVARS struct containing variables stored ; in BIOS ROM. ; ; XTIDE Universal BIOS and Associated Tools ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. ; ; 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. ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html ; %ifndef ROMVARS_INC %define ROMVARS_INC ; ROM Variables. Written to the ROM image before flashing. struc ROMVARS .wRomSign resb 2 ; ROM Signature (AA55h) .bRomSize resb 1 ; ROM size in 512 byte blocks .rgbJump resb 3 ; First instruction to ROM init (jmp) .rgbSign resb 8 ; Signature for XTIDE Configurator Program .szTitle resb 31 ; BIOS title string .szVersion resb 25 ; BIOS version string .wFlags resb 2 ; Word for ROM flags .wDisplayMode resb 2 ; Display mode for boot menu .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks .bIdeCnt resb 1 ; Number of available IDE controllers .bBootDrv resb 1 ; Default drive to boot from .bMinFddCnt resb 1 ; Minimum number of Floppy Drives .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM .bIdleTimeout resb 1 ; Standby timer value .ideVarsBegin: .ideVars0 resb IDEVARS_size .ideVars1 resb IDEVARS_size .ideVars2 resb IDEVARS_size .ideVars3 resb IDEVARS_size %ifdef MODULE_SERIAL .ideVarsSerialAuto resb IDEVARS_size %endif .ideVarsEnd: endstruc %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS %if ROMVARS.ideVarsEnd & 0xff00 <> 0 %error ".ideVars structures must fit within the first 256 bytes of the ROM image" %endif %if (ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin) = 0 %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." %endif %endif NUMBER_OF_IDEVARS EQU ((ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin) / IDEVARS_size) ; Bit defines for ROMVARS.wFlags FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.) FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked ; by holding down the ALT key at the end of drive detection. ; (Conveniently, this is 8, a fact we exploit when testing the bit) ; Here in case the configuration needs to know functionality is present FLG_ROMVARS_MODULE_FEATURE_SETS EQU (1<<5) FLG_ROMVARS_MODULE_8BIT_IDE EQU (1<<6) FLG_ROMVARS_MODULE_8BIT_IDE_ADVANCED EQU (1<<7) FLG_ROMVARS_MODULE_ADVANCED_ATA EQU (1<<8) FLG_ROMVARS_MODULE_BOOT_MENU EQU (1<<9) FLG_ROMVARS_MODULE_EBIOS EQU (1<<10) FLG_ROMVARS_MODULE_HOTKEYS EQU (1<<11) FLG_ROMVARS_MODULE_IRQ EQU (1<<12) FLG_ROMVARS_MODULE_SERIAL EQU (1<<13) FLG_ROMVARS_MODULE_SERIAL_FLOPPY EQU (1<<14) FLG_ROMVARS_MODULE_STRINGS_COMPRESSED EQU (1<<15) ; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes) DEFAULT_TEXT_MODE EQU 4 ; Controller specific variables struc IDEVARS ;;; Word 0 .wSerialPortAndBaud: ; Serial connection port (low, divided by 4) and baud rate divisor (high) .wBasePort: ; IDE Base Port for Command Block (usual) Registers .bSerialPort resb 1 .bSerialBaud resb 1 ;;; Word 1 .wControlBlockPort: .bXTCFcontrolRegister: ; XT-CF autodetects ports .bSerialUnused resb 1 ; IDE Base Port for Control Block Registers .wSerialCOMPortCharAndDevice: ; In DetectPrint, we grab the COM Port char and Device at the same time .bSerialCOMPortChar resb 1 ; Serial connection COM port number/letter ;;; Word 2 .bDevice resb 1 ; Device type .bIRQ resb 1 ; Interrupt Request Number ;;; And more... .drvParamsMaster resb DRVPARAMS_size .drvParamsSlave resb DRVPARAMS_size endstruc %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS %if IDEVARS.bSerialCOMPortChar+1 != IDEVARS.bDevice %error "IDEVARS.bSerialCOMPortChar needs to come immediately before IDEVARS.bDevice so that both bytes can be fetched at the same time inside DetectPrint.asm" %endif %endif STANDARD_CONTROL_BLOCK_OFFSET EQU 200h XTIDE_CONTROL_BLOCK_OFFSET EQU 8h XTCF_CONTROL_BLOCK_OFFSET EQU (XTIDE_CONTROL_BLOCK_OFFSET << 1) ; Default values for Port and PortCtrl, shared with the configurator ; DEVICE_XTIDE_DEFAULT_PORT EQU 300h DEVICE_XTIDE_DEFAULT_PORTCTRL EQU (DEVICE_XTIDE_DEFAULT_PORT + XTIDE_CONTROL_BLOCK_OFFSET) DEVICE_ATA_PRIMARY_PORT EQU 1F0h DEVICE_ATA_PRIMARY_PORTCTRL EQU (DEVICE_ATA_PRIMARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET) DEVICE_ATA_SECONDARY_PORT EQU 170h DEVICE_ATA_SECONDARY_PORTCTRL EQU (DEVICE_ATA_SECONDARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET) DEVICE_ATA_TERTIARY_PORT EQU 1E8h DEVICE_ATA_TERTIARY_PORTCTRL EQU (DEVICE_ATA_TERTIARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET) DEVICE_ATA_QUATERNARY_PORT EQU 168h DEVICE_ATA_QUATERNARY_PORTCTRL EQU (DEVICE_ATA_QUATERNARY_PORT + STANDARD_CONTROL_BLOCK_OFFSET) ; Device types for IDEVARS.bDevice ; IDE Devices are grouped so device numbers cannot be changed without modifying code elsewhere! ; COUNT_OF_STANDARD_IDE_DEVICES EQU 2 ; 16- and 32-bit controllers COUNT_OF_8BIT_IDE_DEVICES EQU 7 COUNT_OF_ALL_IDE_DEVICES EQU (COUNT_OF_8BIT_IDE_DEVICES + COUNT_OF_STANDARD_IDE_DEVICES) ; Standard port mapped I/O DEVICE_16BIT_ATA EQU (0<<1) DEVICE_32BIT_ATA EQU (1<<1) DEVICE_8BIT_ATA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+0)<<1) ; 16- or 32-bit controller in 8-bit mode DEVICE_8BIT_XTIDE_REV1 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+1)<<1) ; Address lines A0 and A3 are swapped DEVICE_8BIT_XTIDE_REV2 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+2)<<1) ; Or rev 1 with swapped A0 and A3 ; IDE Register offsets are SHL 1 DEVICE_8BIT_XTCF_PIO8 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+3)<<1) ; XT-CF using 8-bit PIO mode DEVICE_8BIT_XTCF_DMA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+4)<<1) ; XT-CF using DMA DEVICE_8BIT_XTCF_MEMMAP EQU ((COUNT_OF_STANDARD_IDE_DEVICES+5)<<1) ; XT-CF using Memory Mapped transfers (not I/O) ; Memory Mapped I/O DEVICE_8BIT_JRIDE_ISA EQU ((COUNT_OF_STANDARD_IDE_DEVICES+6)<<1) ; JR-IDE/ISA (Memory Mapped I/O) ; Virtual devices DEVICE_SERIAL_PORT EQU (COUNT_OF_ALL_IDE_DEVICES<<1) ; Master/Slave drive specific parameters struc DRVPARAMS .wFlags resb 2 ; Drive flags .dwMaximumLBA: ; User specified maximum number of sectors .wCylinders resb 2 ; User specified cylinders (1...16383) .wHeadsAndSectors: .bHeads resb 1 ; User specified Heads (1...16) .bSect resb 1 ; User specified Sectors per track (1...63) endstruc ; Bit defines for DRVPARAMS.wFlags MASK_DRVPARAMS_WRITECACHE EQU (3<<0) ; Bits 0...1, Drive internal write cache settings (must start at bit 0) DEFAULT_WRITE_CACHE EQU 0 ; Must be 0 DISABLE_WRITE_CACHE EQU 1 ENABLE_WRITE_CACHE EQU 2 MASK_DRVPARAMS_TRANSLATEMODE EQU (3<