source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Main.asm@ 619

Last change on this file since 619 was 605, checked in by Krister Nordvall, 3 years ago

Changes:

  • The "Remove other hard drives" option in the Boot settings menu in XTIDECFG is now exposed in all BIOS builds. This is needed because the system BIOS in at least two Zenith computer models (Z-161 and Z-171) does not clear the BDA HD count which causes it to increment on warm boot. Running "Auto Configure" in XTIDECFG now also tries to identify these machines by doing a CRC check on the system BIOS and sets the option to YES if a match is found.
  • WORD_ALIGN is now 2 for XT builds. This should benefit XT class machines with 8086 and NEC V30 CPU:s and the cost is negligible (1 byte for the XT BIOS builds and 12 bytes for XTIDECFG.COM).
  • Other minor optimizations.
File size: 15.2 KB
RevLine 
[3]1; Project name : XTIDE Universal BIOS
[86]2; Authors : Tomi Tilli
3; : aitotat@gmail.com
4; :
[181]5; : Greg Lindhorst
6; : gregli@hotmail.com
7; ;
[86]8; : Krister Nordvall
9; : krille_n_@hotmail.com
10; :
[3]11; Description : Main file for BIOS. This is the only file that needs
12; to be compiled since other files are included to this
13; file (so no linker needed, Nasm does it all).
14
[376]15;
[380]16; XTIDE Universal BIOS and Associated Tools
[526]17; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
[376]18;
19; This program is free software; you can redistribute it and/or modify
20; it under the terms of the GNU General Public License as published by
21; the Free Software Foundation; either version 2 of the License, or
22; (at your option) any later version.
[380]23;
[376]24; This program is distributed in the hope that it will be useful,
25; but WITHOUT ANY WARRANTY; without even the implied warranty of
26; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
[380]27; GNU General Public License for more details.
[376]28; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
29;
30
[294]31 ORG 0 ; Code start offset 0000h
[3]32
[379]33 ; We must define included libraries before including "AssemblyLibrary.inc".
[592]34%define EXCLUDE_FROM_XUB ; Exclude unused library functions
[379]35%ifdef MODULE_BOOT_MENU
[567]36 %define MENUEVENT_INLINE_OFFSETS ; Only one menu required, save space and inline offsets
[379]37 %define INCLUDE_MENU_LIBRARY
[567]38 %define MENU_NO_ESC ; User cannot 'esc' out of the menu
[379]39%else ; If no boot menu included
40 %define INCLUDE_DISPLAY_LIBRARY
[392]41 %define INCLUDE_KEYBOARD_LIBRARY
[379]42 %define INCLUDE_TIME_LIBRARY
43%endif
44
45
[181]46 ; Included .inc files
47 %include "AssemblyLibrary.inc" ; Assembly Library. Must be included first!
[522]48 %include "ModuleDependency.inc" ; Dependency checks for optional modules. Must be included second!
[358]49 %include "Version.inc"
[181]50 %include "ATA_ID.inc" ; For ATA Drive Information structs
51 %include "IdeRegisters.inc" ; For ATA Registers, flags and commands
52 %include "Int13h.inc" ; Equates for INT 13h functions
53 %include "CustomDPT.inc" ; For Disk Parameter Table
54 %include "RomVars.inc" ; For ROMVARS and IDEVARS structs
55 %include "RamVars.inc" ; For RAMVARS struct
[254]56 %include "BootVars.inc" ; For BOOTVARS struct
[400]57 %include "IdeIO.inc" ; Macros for IDE port I/O
[181]58 %include "DeviceIDE.inc" ; For IDE device equates
[3]59
60
[397]61
[3]62; Section containing code
63SECTION .text
64
65; ROM variables (must start at offset 0)
[506]66CNT_ROM_BLOCKS EQU BIOS_SIZE / 512 ; number of 512B blocks, 16 = 8kB BIOS
[3]67istruc ROMVARS
68 at ROMVARS.wRomSign, dw 0AA55h ; PC ROM signature
69 at ROMVARS.bRomSize, db CNT_ROM_BLOCKS ; ROM size in 512B blocks
[181]70 at ROMVARS.rgbJump, jmp Initialize_FromMainBiosRomSearch
[358]71 at ROMVARS.rgbSign, db FLASH_SIGNATURE
72 at ROMVARS.szTitle, db TITLE_STRING
73 at ROMVARS.szVersion, db ROM_VERSION_STRING
[3]74
75;---------------------------;
76; AT Build default settings ;
77;---------------------------;
78%ifdef USE_AT
[593]79%ifdef USE_386
[605]80 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_CLEAR_BDA_HD_COUNT | MASK_ROMVARS_INCLUDED_MODULES
[593]81%else
[397]82 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | MASK_ROMVARS_INCLUDED_MODULES
[593]83%endif
[143]84 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
[397]85%ifdef MODULE_BOOT_MENU
[491]86 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
[592]87 at ROMVARS.pColorTheme, dw ColorTheme ; Offset to the ATTRIBUTE_CHARS struc that holds the color theme
[397]88%endif
[485]89 at ROMVARS.bIdeCnt, db 2 ; Number of supported controllers
[3]90 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
91 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
92 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory
[380]93 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
[3]94
[491]95 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_ATA_PRIMARY_PORT ; Controller Command Block base port
96 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_ATA_PRIMARY_PORTCTRL ; Controller Control Block base port
[473]97 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[524]98 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 14
[422]99 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
100 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[3]101
[485]102 at ROMVARS.ideVars1+IDEVARS.wBasePort, dw DEVICE_ATA_SECONDARY_PORT
103 at ROMVARS.ideVars1+IDEVARS.wControlBlockPort, dw DEVICE_ATA_SECONDARY_PORTCTRL
104 at ROMVARS.ideVars1+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[524]105 at ROMVARS.ideVars1+IDEVARS.bIRQ, db 15
[422]106 at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
107 at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[3]108
[485]109 at ROMVARS.ideVars2+IDEVARS.wBasePort, dw DEVICE_ATA_TERTIARY_PORT
110 at ROMVARS.ideVars2+IDEVARS.wControlBlockPort, dw DEVICE_ATA_TERTIARY_PORTCTRL
111 at ROMVARS.ideVars2+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[592]112 at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0 ; Should be 11 on the GSI Inc. Model 2C
[422]113 at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
114 at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[143]115
[473]116 at ROMVARS.ideVars3+IDEVARS.wBasePort, dw DEVICE_ATA_QUATERNARY_PORT
117 at ROMVARS.ideVars3+IDEVARS.wControlBlockPort, dw DEVICE_ATA_QUATERNARY_PORTCTRL
118 at ROMVARS.ideVars3+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[592]119 at ROMVARS.ideVars3+IDEVARS.bIRQ, db 0 ; Should be 10 on the GSI Inc. Model 2C
[422]120 at ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
121 at ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[175]122
123%ifdef MODULE_SERIAL
[589]124 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
[181]125%endif
[3]126%else
127;-----------------------------------;
128; XT and XT+ Build default settings ;
129;-----------------------------------;
[397]130 at ROMVARS.wFlags, dw MASK_ROMVARS_INCLUDED_MODULES
[143]131 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
[397]132%ifdef MODULE_BOOT_MENU
[491]133 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
[592]134 at ROMVARS.pColorTheme, dw ColorTheme ; Offset to the ATTRIBUTE_CHARS struc that holds the color theme
[397]135%endif
[567]136 at ROMVARS.bIdeCnt, db 1
[3]137 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
[461]138 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
[3]139 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory in full mode
[380]140 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
[3]141
[589]142%ifndef MODULE_8BIT_IDE
143 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_ATA_PRIMARY_PORT ; Controller Command Block base port
144 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_ATA_PRIMARY_PORTCTRL ; Controller Control Block base port
145 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_16BIT_ATA
146%elifdef MODULE_8BIT_IDE_ADVANCED
147 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_XTIDE_DEFAULT_PORT ; Controller Command Block base port
148 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_8BIT_XTCF_PIO8
[559]149%else
[589]150 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_XTIDE_DEFAULT_PORT ; Controller Command Block base port
151 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_XTIDE_DEFAULT_PORTCTRL ; Controller Control Block base port
152 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_8BIT_XTIDE_REV1
[559]153%endif
[447]154 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
155 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[143]156
[589]157 at ROMVARS.ideVars1+IDEVARS.wBasePort, dw DEVICE_ATA_SECONDARY_PORT
158 at ROMVARS.ideVars1+IDEVARS.wControlBlockPort, dw DEVICE_ATA_SECONDARY_PORTCTRL
159 at ROMVARS.ideVars1+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[447]160 at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
161 at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[143]162
[589]163 at ROMVARS.ideVars2+IDEVARS.wBasePort, dw DEVICE_ATA_TERTIARY_PORT
164 at ROMVARS.ideVars2+IDEVARS.wControlBlockPort, dw DEVICE_ATA_TERTIARY_PORTCTRL
165 at ROMVARS.ideVars2+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[447]166 at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
167 at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[143]168
[589]169 at ROMVARS.ideVars3+IDEVARS.wBasePort, dw DEVICE_ATA_QUATERNARY_PORT
170 at ROMVARS.ideVars3+IDEVARS.wControlBlockPort, dw DEVICE_ATA_QUATERNARY_PORTCTRL
171 at ROMVARS.ideVars3+IDEVARS.bDevice, db DEVICE_16BIT_ATA
[447]172 at ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
173 at ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
[175]174
175%ifdef MODULE_SERIAL
[589]176 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
[3]177%endif
[181]178%endif
[3]179iend
180
[380]181 ; Strings are first to avoid them moving unnecessarily when code is turned on and off with %ifdef's
[334]182 ; since some groups of strings need to be on the same 256-byte page.
183 ;
184%ifdef MODULE_STRINGS_COMPRESSED
185 %define STRINGSCOMPRESSED_STRINGS
[380]186 %include "StringsCompressed.asm"
[334]187%else
188 %include "Strings.asm" ; For BIOS message strings
189%endif
190
[248]191 ; Libraries, data, Initialization and drive detection
[334]192
[181]193 %include "AssemblyLibrary.asm"
[605]194%ifdef MODULE_WIN9X_CMOS_HACK
[593]195 %include "CMOS.asm" ; This belongs in the Assembly Library
196%endif
[334]197
198 ; String compression tables need to come after the AssemblyLibrary (since they depend on addresses
[380]199 ; established in the assembly library), and are unnecessary if strings are not compressed.
[334]200 ;
201%ifdef MODULE_STRINGS_COMPRESSED
[380]202 %undef STRINGSCOMPRESSED_STRINGS
[334]203 %define STRINGSCOMPRESSED_TABLES
204 %include "StringsCompressed.asm"
205%endif
[380]206
[248]207 %include "Initialize.asm" ; For BIOS initialization
208 %include "Interrupts.asm" ; For Interrupt initialization
209 %include "RamVars.asm" ; For RAMVARS initialization and access
[399]210 %include "BootVars.asm" ; For initializing variables used during init and boot
[392]211 %include "FloppyDrive.asm" ; Floppy Drive related functions
[285]212 %include "CreateDPT.asm" ; For creating DPTs
213 %include "FindDPT.asm" ; For finding DPTs
[181]214 %include "AccessDPT.asm" ; For accessing DPTs
[421]215 %include "AtaGeometry.asm" ; For generating L-CHS parameters
[397]216 %include "DrvDetectInfo.asm" ; For creating DRVDETECTINFO structs
[181]217 %include "AtaID.asm" ; For ATA Identify Device information
218 %include "DetectDrives.asm" ; For detecting IDE drives
219 %include "DetectPrint.asm" ; For printing drive detection strings
[550]220%ifdef MODULE_COMPATIBLE_TABLES
221 %include "CompatibleDPT.asm"
222%endif
[395]223
224 ; Hotkey Bar
225%ifdef MODULE_HOTKEYS
[392]226 %include "HotkeyBar.asm" ; For hotkeys during drive detection and boot menu
[526]227%endif
[492]228%ifdef MODULE_DRIVEXLATE
229 %include "DriveXlate.asm" ; For swapping drive numbers, must come immediately after HotkeyBar.asm
[395]230%endif
[248]231
[181]232 ; Boot menu
[379]233%ifdef MODULE_BOOT_MENU
[181]234 %include "BootMenu.asm" ; For Boot Menu operations
235 %include "BootMenuEvent.asm" ; For menu library event handling
[192]236 ; NOTE: BootMenuPrint needs to come immediately after BootMenuEvent
[258]237 ; so that jump table entries in BootMenuEvent stay within 8-bits
238 %include "BootMenuPrint.asm" ; For printing Boot Menu strings, also includes "BootMenuPrintCfg.asm"
[379]239%endif
240
241 ; Boot loader
[567]242%ifdef MODULE_VERY_LATE_INIT
[560]243 %include "Int13hBiosInit.asm"
244%endif
[379]245 %include "Int19h.asm" ; For Int 19h, Boot Loader
[492]246 %include "BootSector.asm" ; For loading boot sector
[392]247 %include "Int19hReset.asm" ; INT 19h handler for proper system reset
[3]248
[181]249 ; For all device types
[192]250 %include "Idepack.asm"
[181]251 %include "Device.asm"
252 %include "Timer.asm" ; For timeout and delay
[155]253
[181]254 ; IDE Device support
[363]255%ifdef MODULE_ADVANCED_ATA
256 %include "AdvAtaInit.asm" ; For initializing VLB and PCI controllers
257 %include "Vision.asm" ; QDI Vision QD6500 and QD6580 support
[587]258 %include "PDC20x30.asm" ; Promise PDC 20230-C and 20630 support
[363]259%endif
[181]260 %include "IdeCommand.asm"
[493]261%ifdef MODULE_8BIT_IDE_ADVANCED
[400]262 %include "JrIdeTransfer.asm" ; Must be included after IdeCommand.asm
[480]263 %include "IdeDmaBlock.asm"
[400]264%endif
265 %include "IdeTransfer.asm"
[473]266 %include "IdePioBlock.asm"
[192]267 %include "IdeWait.asm"
[294]268 %include "IdeError.asm" ; Must be included after IdeWait.asm
[181]269 %include "IdeDPT.asm"
270 %include "IdeIO.asm"
[398]271%ifdef MODULE_IRQ
[181]272 %include "IdeIrq.asm"
[398]273%endif
[155]274
[400]275 ; Serial Device support
[181]276%ifdef MODULE_SERIAL ; Serial Port Device support
277 %include "SerialCommand.asm"
278 %include "SerialDPT.asm"
[175]279%endif
[155]280
[181]281 ; INT 13h Hard Disk BIOS functions
[594]282%ifdef MODULE_MFM_COMPATIBILITY
283 %include "Int13hMFMcompatibility.asm"
284%endif
[181]285 %include "Int13h.asm" ; For Int 13h, Disk functions
[529]286 %include "AH0h_HReset.asm"
287 %include "AH1h_HStatus.asm"
288 %include "AH2h_HRead.asm"
289 %include "AH3h_HWrite.asm"
290 %include "AH4h_HVerify.asm"
291 %include "AH8h_HParams.asm"
292 %include "AH9h_HInit.asm"
293 %include "AHCh_HSeek.asm"
294 %include "AH10h_HReady.asm"
295 %include "AH11h_HRecal.asm"
296 %include "AH15h_HSize.asm"
[493]297%ifdef MODULE_8BIT_IDE_ADVANCED
[471]298 %include "AH1Eh_XTCF.asm"
299%endif
[529]300 %include "AH23h_HFeatures.asm"
301 %include "AH24h_HSetBlocks.asm"
302 %include "AH25h_HDrvID.asm"
[221]303 %include "Address.asm" ; For sector address translations
304 %include "Prepare.asm" ; For buffer pointer normalization
[176]305%ifdef MODULE_EBIOS
[181]306 %include "AH42h_ExtendedReadSectors.asm"
307 %include "AH43h_ExtendedWriteSectors.asm"
308 %include "AH44h_ExtendedVerifySectors.asm"
309 %include "AH47h_ExtendedSeek.asm"
310 %include "AH48h_GetExtendedDriveParameters.asm"
[221]311 %include "AH41h_CheckIfExtensionsPresent.asm"
[176]312%endif
[589]313
314
[592]315%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
[589]316; Although it's very unlikely to happen, we give warnings for builds that cannot be automatically checksummed due to the size being too large.
317; In some cases it's theoretically possible to checksum the build anyway (manually) which is why these are warnings and not errors.
318%if BIOS_SIZE = 8192 ; A small build, possibly a candidate for the ROM socket on a 3Com 3C503 card.
319 %if ($-$$) <= BIOS_SIZE ; Only give warnings when the problem isn't obvious anyway.
320 %if ($-$$) > BIOS_SIZE - 3
321 %warning "This build is too large to be auto-checksummed!"
322 %endif
323 %endif
[592]324%elif ($-$$) = BIOS_SIZE ; A large or tiny build.
[589]325 %warning "This build is too large to be auto-checksummed!"
326%endif
[592]327%endif
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