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
Line 
1; Project name : XTIDE Universal BIOS
2; Authors : Tomi Tilli
3; : aitotat@gmail.com
4; :
5; : Greg Lindhorst
6; : gregli@hotmail.com
7; ;
8; : Krister Nordvall
9; : krille_n_@hotmail.com
10; :
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
15;
16; XTIDE Universal BIOS and Associated Tools
17; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
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.
23;
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
27; GNU General Public License for more details.
28; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
29;
30
31 ORG 0 ; Code start offset 0000h
32
33 ; We must define included libraries before including "AssemblyLibrary.inc".
34%define EXCLUDE_FROM_XUB ; Exclude unused library functions
35%ifdef MODULE_BOOT_MENU
36 %define MENUEVENT_INLINE_OFFSETS ; Only one menu required, save space and inline offsets
37 %define INCLUDE_MENU_LIBRARY
38 %define MENU_NO_ESC ; User cannot 'esc' out of the menu
39%else ; If no boot menu included
40 %define INCLUDE_DISPLAY_LIBRARY
41 %define INCLUDE_KEYBOARD_LIBRARY
42 %define INCLUDE_TIME_LIBRARY
43%endif
44
45
46 ; Included .inc files
47 %include "AssemblyLibrary.inc" ; Assembly Library. Must be included first!
48 %include "ModuleDependency.inc" ; Dependency checks for optional modules. Must be included second!
49 %include "Version.inc"
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
56 %include "BootVars.inc" ; For BOOTVARS struct
57 %include "IdeIO.inc" ; Macros for IDE port I/O
58 %include "DeviceIDE.inc" ; For IDE device equates
59
60
61
62; Section containing code
63SECTION .text
64
65; ROM variables (must start at offset 0)
66CNT_ROM_BLOCKS EQU BIOS_SIZE / 512 ; number of 512B blocks, 16 = 8kB BIOS
67istruc ROMVARS
68 at ROMVARS.wRomSign, dw 0AA55h ; PC ROM signature
69 at ROMVARS.bRomSize, db CNT_ROM_BLOCKS ; ROM size in 512B blocks
70 at ROMVARS.rgbJump, jmp Initialize_FromMainBiosRomSearch
71 at ROMVARS.rgbSign, db FLASH_SIGNATURE
72 at ROMVARS.szTitle, db TITLE_STRING
73 at ROMVARS.szVersion, db ROM_VERSION_STRING
74
75;---------------------------;
76; AT Build default settings ;
77;---------------------------;
78%ifdef USE_AT
79%ifdef USE_386
80 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_CLEAR_BDA_HD_COUNT | MASK_ROMVARS_INCLUDED_MODULES
81%else
82 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | MASK_ROMVARS_INCLUDED_MODULES
83%endif
84 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
85%ifdef MODULE_BOOT_MENU
86 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
87 at ROMVARS.pColorTheme, dw ColorTheme ; Offset to the ATTRIBUTE_CHARS struc that holds the color theme
88%endif
89 at ROMVARS.bIdeCnt, db 2 ; Number of supported controllers
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
93 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
94
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
97 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_16BIT_ATA
98 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 14
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)
101
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
105 at ROMVARS.ideVars1+IDEVARS.bIRQ, db 15
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)
108
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
112 at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0 ; Should be 11 on the GSI Inc. Model 2C
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)
115
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
119 at ROMVARS.ideVars3+IDEVARS.bIRQ, db 0 ; Should be 10 on the GSI Inc. Model 2C
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)
122
123%ifdef MODULE_SERIAL
124 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
125%endif
126%else
127;-----------------------------------;
128; XT and XT+ Build default settings ;
129;-----------------------------------;
130 at ROMVARS.wFlags, dw MASK_ROMVARS_INCLUDED_MODULES
131 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
132%ifdef MODULE_BOOT_MENU
133 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
134 at ROMVARS.pColorTheme, dw ColorTheme ; Offset to the ATTRIBUTE_CHARS struc that holds the color theme
135%endif
136 at ROMVARS.bIdeCnt, db 1
137 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
138 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
139 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory in full mode
140 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
141
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
149%else
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
153%endif
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)
156
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
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)
162
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
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)
168
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
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)
174
175%ifdef MODULE_SERIAL
176 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
177%endif
178%endif
179iend
180
181 ; Strings are first to avoid them moving unnecessarily when code is turned on and off with %ifdef's
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
186 %include "StringsCompressed.asm"
187%else
188 %include "Strings.asm" ; For BIOS message strings
189%endif
190
191 ; Libraries, data, Initialization and drive detection
192
193 %include "AssemblyLibrary.asm"
194%ifdef MODULE_WIN9X_CMOS_HACK
195 %include "CMOS.asm" ; This belongs in the Assembly Library
196%endif
197
198 ; String compression tables need to come after the AssemblyLibrary (since they depend on addresses
199 ; established in the assembly library), and are unnecessary if strings are not compressed.
200 ;
201%ifdef MODULE_STRINGS_COMPRESSED
202 %undef STRINGSCOMPRESSED_STRINGS
203 %define STRINGSCOMPRESSED_TABLES
204 %include "StringsCompressed.asm"
205%endif
206
207 %include "Initialize.asm" ; For BIOS initialization
208 %include "Interrupts.asm" ; For Interrupt initialization
209 %include "RamVars.asm" ; For RAMVARS initialization and access
210 %include "BootVars.asm" ; For initializing variables used during init and boot
211 %include "FloppyDrive.asm" ; Floppy Drive related functions
212 %include "CreateDPT.asm" ; For creating DPTs
213 %include "FindDPT.asm" ; For finding DPTs
214 %include "AccessDPT.asm" ; For accessing DPTs
215 %include "AtaGeometry.asm" ; For generating L-CHS parameters
216 %include "DrvDetectInfo.asm" ; For creating DRVDETECTINFO structs
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
220%ifdef MODULE_COMPATIBLE_TABLES
221 %include "CompatibleDPT.asm"
222%endif
223
224 ; Hotkey Bar
225%ifdef MODULE_HOTKEYS
226 %include "HotkeyBar.asm" ; For hotkeys during drive detection and boot menu
227%endif
228%ifdef MODULE_DRIVEXLATE
229 %include "DriveXlate.asm" ; For swapping drive numbers, must come immediately after HotkeyBar.asm
230%endif
231
232 ; Boot menu
233%ifdef MODULE_BOOT_MENU
234 %include "BootMenu.asm" ; For Boot Menu operations
235 %include "BootMenuEvent.asm" ; For menu library event handling
236 ; NOTE: BootMenuPrint needs to come immediately after BootMenuEvent
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"
239%endif
240
241 ; Boot loader
242%ifdef MODULE_VERY_LATE_INIT
243 %include "Int13hBiosInit.asm"
244%endif
245 %include "Int19h.asm" ; For Int 19h, Boot Loader
246 %include "BootSector.asm" ; For loading boot sector
247 %include "Int19hReset.asm" ; INT 19h handler for proper system reset
248
249 ; For all device types
250 %include "Idepack.asm"
251 %include "Device.asm"
252 %include "Timer.asm" ; For timeout and delay
253
254 ; IDE Device support
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
258 %include "PDC20x30.asm" ; Promise PDC 20230-C and 20630 support
259%endif
260 %include "IdeCommand.asm"
261%ifdef MODULE_8BIT_IDE_ADVANCED
262 %include "JrIdeTransfer.asm" ; Must be included after IdeCommand.asm
263 %include "IdeDmaBlock.asm"
264%endif
265 %include "IdeTransfer.asm"
266 %include "IdePioBlock.asm"
267 %include "IdeWait.asm"
268 %include "IdeError.asm" ; Must be included after IdeWait.asm
269 %include "IdeDPT.asm"
270 %include "IdeIO.asm"
271%ifdef MODULE_IRQ
272 %include "IdeIrq.asm"
273%endif
274
275 ; Serial Device support
276%ifdef MODULE_SERIAL ; Serial Port Device support
277 %include "SerialCommand.asm"
278 %include "SerialDPT.asm"
279%endif
280
281 ; INT 13h Hard Disk BIOS functions
282%ifdef MODULE_MFM_COMPATIBILITY
283 %include "Int13hMFMcompatibility.asm"
284%endif
285 %include "Int13h.asm" ; For Int 13h, Disk functions
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"
297%ifdef MODULE_8BIT_IDE_ADVANCED
298 %include "AH1Eh_XTCF.asm"
299%endif
300 %include "AH23h_HFeatures.asm"
301 %include "AH24h_HSetBlocks.asm"
302 %include "AH25h_HDrvID.asm"
303 %include "Address.asm" ; For sector address translations
304 %include "Prepare.asm" ; For buffer pointer normalization
305%ifdef MODULE_EBIOS
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"
311 %include "AH41h_CheckIfExtensionsPresent.asm"
312%endif
313
314
315%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
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
324%elif ($-$$) = BIOS_SIZE ; A large or tiny build.
325 %warning "This build is too large to be auto-checksummed!"
326%endif
327%endif
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