source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Main.asm@ 628

Last change on this file since 628 was 625, checked in by Krister Nordvall, 17 months ago

Changes:

  • Added a configuration option to let the BIOS store RamVars to an UMB when Full operating mode is enabled. This is primarily for XT class machines with RAM in the UMA (which apparently is a common thing these days).
  • Added two new builds specifically for IBM PS/2 machines. This is for support of the new McIDE adapter from the guys at zzxio.com. Note that the additional hardware specific code (under the USE_PS2 define) is for the PS/2 machines themselves and not for the McIDE adapters, so any controller in an IBM PS/2 machine can be used with the USE_PS2 define.
  • Moved pColorTheme out of the range of ROMVARS being copied over when doing "Load old settings from EEPROM" in XTIDECFG. This fixed a serious bug from r592 where loading a BIOS from file and then loading the old settings from ROM would corrupt 7 bytes of code somewhere in the loaded BIOS.
  • Optimizations (speed and size) to the library. Browsing the menus in XTIDECFG should now feel a little less sluggish.
  • Hopefully fixed a problem with the PostCommitHook script where it sometimes wouldn't find the CommitInProgress file. I say hopefully because testing this is a nightmare.
File size: 15.9 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, 2011-2023 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 "r"
74 db ROM_VERSION_STRING
75 db BUILD_DATE_STRING,NULL
76%ifdef MODULE_BOOT_MENU
77 at ROMVARS.pColorTheme, dw ColorTheme ; Offset to the ATTRIBUTE_CHARS struc that holds the color theme
78%endif
79
80;---------------------------;
81; AT Build default settings ;
82;---------------------------;
83%ifdef USE_AT
84%ifdef USE_386
85 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_CLEAR_BDA_HD_COUNT | MASK_ROMVARS_INCLUDED_MODULES
86%else
87 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | MASK_ROMVARS_INCLUDED_MODULES
88%endif
89 at ROMVARS.wRamVars, dw NULL ; Use 'stolen' top of conventional memory by default in Full mode
90 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
91%ifdef MODULE_BOOT_MENU
92 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
93%endif
94%ifdef USE_PS2
95 at ROMVARS.bIdeCnt, db 4 ; Number of supported controllers with two McIDE adapters
96%else
97 at ROMVARS.bIdeCnt, db 2 ; Number of supported controllers
98%endif
99 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
100 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
101 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory
102 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
103
104 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_ATA_PRIMARY_PORT ; Controller Command Block base port
105 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_ATA_PRIMARY_PORTCTRL ; Controller Control Block base port
106 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_16BIT_ATA
107%ifdef MODULE_IRQ
108%ifdef USE_PS2
109 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 0
110%else
111 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 14
112%endif
113%endif
114 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
115 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
116
117 at ROMVARS.ideVars1+IDEVARS.wBasePort, dw DEVICE_ATA_SECONDARY_PORT
118 at ROMVARS.ideVars1+IDEVARS.wControlBlockPort, dw DEVICE_ATA_SECONDARY_PORTCTRL
119 at ROMVARS.ideVars1+IDEVARS.bDevice, db DEVICE_16BIT_ATA
120%ifdef MODULE_IRQ
121%ifdef USE_PS2
122 at ROMVARS.ideVars1+IDEVARS.bIRQ, db 0
123%else
124 at ROMVARS.ideVars1+IDEVARS.bIRQ, db 15
125%endif
126%endif
127 at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
128 at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
129
130 at ROMVARS.ideVars2+IDEVARS.wBasePort, dw DEVICE_ATA_TERTIARY_PORT
131 at ROMVARS.ideVars2+IDEVARS.wControlBlockPort, dw DEVICE_ATA_TERTIARY_PORTCTRL
132 at ROMVARS.ideVars2+IDEVARS.bDevice, db DEVICE_16BIT_ATA
133%ifdef MODULE_IRQ
134%ifdef USE_PS2
135 at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0
136%else
137 at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0 ; Should be 11 on the GSI Inc. Model 2C
138%endif
139%endif
140 at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
141 at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
142
143 at ROMVARS.ideVars3+IDEVARS.wBasePort, dw DEVICE_ATA_QUATERNARY_PORT
144 at ROMVARS.ideVars3+IDEVARS.wControlBlockPort, dw DEVICE_ATA_QUATERNARY_PORTCTRL
145 at ROMVARS.ideVars3+IDEVARS.bDevice, db DEVICE_16BIT_ATA
146%ifdef MODULE_IRQ
147%ifdef USE_PS2
148 at ROMVARS.ideVars3+IDEVARS.bIRQ, db 0
149%else
150 at ROMVARS.ideVars3+IDEVARS.bIRQ, db 0 ; Should be 10 on the GSI Inc. Model 2C
151%endif
152%endif
153 at ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
154 at ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, dw DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
155
156%ifdef MODULE_SERIAL
157 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
158%endif
159%else
160;-----------------------------------;
161; XT and XT+ Build default settings ;
162;-----------------------------------;
163 at ROMVARS.wFlags, dw MASK_ROMVARS_INCLUDED_MODULES
164 at ROMVARS.wRamVars, dw LITE_MODE_RAMVARS_SEGMENT
165 at ROMVARS.wDisplayMode, dw DEFAULT_TEXT_MODE
166%ifdef MODULE_BOOT_MENU
167 at ROMVARS.wBootTimeout, dw BOOT_MENU_DEFAULT_TIMEOUT
168%endif
169 at ROMVARS.bIdeCnt, db 1
170 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
171 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
172 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory in full mode
173 at ROMVARS.bIdleTimeout, db 0 ; Standby timer disabled by default
174
175%ifndef MODULE_8BIT_IDE
176 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_ATA_PRIMARY_PORT ; Controller Command Block base port
177 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_ATA_PRIMARY_PORTCTRL ; Controller Control Block base port
178 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_16BIT_ATA
179%elifdef MODULE_8BIT_IDE_ADVANCED
180 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_XTIDE_DEFAULT_PORT ; Controller Command Block base port
181 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_8BIT_XTCF_PIO8
182%else
183 at ROMVARS.ideVars0+IDEVARS.wBasePort, dw DEVICE_XTIDE_DEFAULT_PORT ; Controller Command Block base port
184 at ROMVARS.ideVars0+IDEVARS.wControlBlockPort, dw DEVICE_XTIDE_DEFAULT_PORTCTRL ; Controller Control Block base port
185 at ROMVARS.ideVars0+IDEVARS.bDevice, db DEVICE_8BIT_XTIDE_REV1
186%endif
187 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
188 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
189
190 at ROMVARS.ideVars1+IDEVARS.wBasePort, dw DEVICE_ATA_SECONDARY_PORT
191 at ROMVARS.ideVars1+IDEVARS.wControlBlockPort, dw DEVICE_ATA_SECONDARY_PORTCTRL
192 at ROMVARS.ideVars1+IDEVARS.bDevice, db DEVICE_16BIT_ATA
193 at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
194 at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
195
196 at ROMVARS.ideVars2+IDEVARS.wBasePort, dw DEVICE_ATA_TERTIARY_PORT
197 at ROMVARS.ideVars2+IDEVARS.wControlBlockPort, dw DEVICE_ATA_TERTIARY_PORTCTRL
198 at ROMVARS.ideVars2+IDEVARS.bDevice, db DEVICE_16BIT_ATA
199 at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
200 at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
201
202 at ROMVARS.ideVars3+IDEVARS.wBasePort, dw DEVICE_ATA_QUATERNARY_PORT
203 at ROMVARS.ideVars3+IDEVARS.wControlBlockPort, dw DEVICE_ATA_QUATERNARY_PORTCTRL
204 at ROMVARS.ideVars3+IDEVARS.bDevice, db DEVICE_16BIT_ATA
205 at ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
206 at ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db DISABLE_WRITE_CACHE | FLG_DRVPARAMS_BLOCKMODE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION)
207
208%ifdef MODULE_SERIAL
209 at ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice, db DEVICE_SERIAL_PORT
210%endif
211%endif
212iend
213
214 ; Strings are first to avoid them moving unnecessarily when code is turned on and off with %ifdef's
215 ; since some groups of strings need to be on the same 256-byte page.
216 ;
217%ifdef MODULE_STRINGS_COMPRESSED
218 %define STRINGSCOMPRESSED_STRINGS
219 %include "StringsCompressed.asm"
220%else
221 %include "Strings.asm" ; For BIOS message strings
222%endif
223
224 ; Libraries, data, Initialization and drive detection
225
226 %include "AssemblyLibrary.asm"
227%ifdef MODULE_WIN9X_CMOS_HACK
228 %include "CMOS.asm" ; This belongs in the Assembly Library
229%endif
230
231 ; String compression tables need to come after the AssemblyLibrary (since they depend on addresses
232 ; established in the assembly library), and are unnecessary if strings are not compressed.
233 ;
234%ifdef MODULE_STRINGS_COMPRESSED
235 %undef STRINGSCOMPRESSED_STRINGS
236 %define STRINGSCOMPRESSED_TABLES
237 %include "StringsCompressed.asm"
238%endif
239
240 %include "Initialize.asm" ; For BIOS initialization
241 %include "Interrupts.asm" ; For Interrupt initialization
242 %include "RamVars.asm" ; For RAMVARS initialization and access
243 %include "BootVars.asm" ; For initializing variables used during init and boot
244 %include "FloppyDrive.asm" ; Floppy Drive related functions
245 %include "CreateDPT.asm" ; For creating DPTs
246 %include "FindDPT.asm" ; For finding DPTs
247 %include "AccessDPT.asm" ; For accessing DPTs
248 %include "AtaGeometry.asm" ; For generating L-CHS parameters
249 %include "DrvDetectInfo.asm" ; For creating DRVDETECTINFO structs
250 %include "AtaID.asm" ; For ATA Identify Device information
251 %include "DetectDrives.asm" ; For detecting IDE drives
252 %include "DetectPrint.asm" ; For printing drive detection strings
253%ifdef MODULE_COMPATIBLE_TABLES
254 %include "CompatibleDPT.asm"
255%endif
256
257 ; Hotkey Bar
258%ifdef MODULE_HOTKEYS
259 %include "HotkeyBar.asm" ; For hotkeys during drive detection and boot menu
260%endif
261%ifdef MODULE_DRIVEXLATE
262 %include "DriveXlate.asm" ; For swapping drive numbers, must come immediately after HotkeyBar.asm
263%endif
264
265 ; Boot menu
266%ifdef MODULE_BOOT_MENU
267 %include "BootMenu.asm" ; For Boot Menu operations
268 %include "BootMenuEvent.asm" ; For menu library event handling
269 ; NOTE: BootMenuPrint needs to come immediately after BootMenuEvent
270 ; so that jump table entries in BootMenuEvent stay within 8-bits
271 %include "BootMenuPrint.asm" ; For printing Boot Menu strings, also includes "BootMenuPrintCfg.asm"
272%endif
273
274 ; Boot loader
275%ifdef MODULE_VERY_LATE_INIT
276 %include "Int13hBiosInit.asm"
277%endif
278 %include "Int19h.asm" ; For Int 19h, Boot Loader
279 %include "BootSector.asm" ; For loading boot sector
280 %include "Int19hReset.asm" ; INT 19h handler for proper system reset
281
282 ; For all device types
283 %include "Idepack.asm"
284 %include "Device.asm"
285 %include "Timer.asm" ; For timeout and delay
286
287 ; IDE Device support
288%ifdef MODULE_ADVANCED_ATA
289 %include "AdvAtaInit.asm" ; For initializing VLB and PCI controllers
290 %include "Vision.asm" ; QDI Vision QD6500 and QD6580 support
291 %include "PDC20x30.asm" ; Promise PDC 20230-C and 20630 support
292%endif
293 %include "IdeCommand.asm"
294%ifdef MODULE_8BIT_IDE_ADVANCED
295 %include "JrIdeTransfer.asm" ; Must be included after IdeCommand.asm
296 %include "IdeDmaBlock.asm"
297%endif
298 %include "IdeTransfer.asm"
299 %include "IdePioBlock.asm"
300 %include "IdeWait.asm"
301 %include "IdeError.asm" ; Must be included after IdeWait.asm
302 %include "IdeDPT.asm"
303 %include "IdeIO.asm"
304%ifdef MODULE_IRQ
305 %include "IdeIrq.asm"
306%endif
307
308 ; Serial Device support
309%ifdef MODULE_SERIAL ; Serial Port Device support
310 %include "SerialCommand.asm"
311 %include "SerialDPT.asm"
312%endif
313
314 ; INT 13h Hard Disk BIOS functions
315%ifdef MODULE_MFM_COMPATIBILITY
316 %include "Int13hMFMcompatibility.asm"
317%endif
318 %include "Int13h.asm" ; For Int 13h, Disk functions
319 %include "AH0h_HReset.asm"
320 %include "AH1h_HStatus.asm"
321 %include "AH2h_HRead.asm"
322 %include "AH3h_HWrite.asm"
323 %include "AH4h_HVerify.asm"
324 %include "AH8h_HParams.asm"
325 %include "AH9h_HInit.asm"
326 %include "AHCh_HSeek.asm"
327 %include "AH10h_HReady.asm"
328 %include "AH11h_HRecal.asm"
329 %include "AH15h_HSize.asm"
330%ifdef MODULE_8BIT_IDE_ADVANCED
331 %include "AH1Eh_XTCF.asm"
332%endif
333 %include "AH23h_HFeatures.asm"
334 %include "AH24h_HSetBlocks.asm"
335 %include "AH25h_HDrvID.asm"
336 %include "Address.asm" ; For sector address translations
337 %include "Prepare.asm" ; For buffer pointer normalization
338%ifdef MODULE_EBIOS
339 %include "AH42h_ExtendedReadSectors.asm"
340 %include "AH43h_ExtendedWriteSectors.asm"
341 %include "AH44h_ExtendedVerifySectors.asm"
342 %include "AH47h_ExtendedSeek.asm"
343 %include "AH48h_GetExtendedDriveParameters.asm"
344 %include "AH41h_CheckIfExtensionsPresent.asm"
345%endif
346
347
348%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
349; Although it's very unlikely to happen, we give warnings for builds that cannot be automatically checksummed due to the size being too large.
350; In some cases it's theoretically possible to checksum the build anyway (manually) which is why these are warnings and not errors.
351%if BIOS_SIZE = 8192 ; A small build, possibly a candidate for the ROM socket on a 3Com 3C503 card.
352 %if ($-$$) <= BIOS_SIZE ; Only give warnings when the problem isn't obvious anyway.
353 %if ($-$$) > BIOS_SIZE - 3
354 %warning "This build is too large to be auto-checksummed!"
355 %endif
356 %endif
357%elif ($-$$) = BIOS_SIZE ; A large or tiny build.
358 %warning "This build is too large to be auto-checksummed!"
359%endif
360%endif
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