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AIR-BOOT.ASM@ 35

Last change on this file since 35 was 35, checked in by Ben Rietbroek, 13 years ago

Corrected CRC calculations in installers and setaboot [2012-01-21]

Fixes

o Corrected CRC calculations on AiR-BOOT configuration in the

installers and setaboot. They are now v1.07 compatible again.

Note

This commit and all following commits upto and including the RC3
commit [2012-09-09] are delayed commits from a local repository.
Also, the RC (Release Candidate) naming of the corresponding commits
is a bit misleading. One would label a revision with RC when near to
a final release. Since many things have changed between RC1,RC2 & RC3,
these RC's should be interpreted as mile-stones.

WARNING!!

All commits upto and including the commit of [2012-05-13] contain
a severe bug!! Building from these sources and then disabling
the 'force LBA' feature while also using the drive-letter feature or
editing the label can destroy the MBR on all attached disks!!
DO NOT DISABLE 'FORCE LBA USAGE' WHEN BUILT FROM THE ABOVE COMMITS!!

File size: 66.6 KB

Line
1	; AiR-BOOT (c) Copyright 1998-2008 M. Kiewitz
2	;
3	; This file is part of AiR-BOOT
4	;
5	; AiR-BOOT is free software: you can redistribute it and/or modify it under
6	; the terms of the GNU General Public License as published by the Free
7	; Software Foundation, either version 3 of the License, or (at your option)
8	; any later version.
9	;
10	; AiR-BOOT is distributed in the hope that it will be useful, but WITHOUT ANY
11	; WARRANTY: without even the implied warranty of MERCHANTABILITY or FITNESS
12	; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
13	; details.
14	;
15	; You should have received a copy of the GNU General Public License along with
16	; AiR-BOOT. If not, see <http://www.gnu.org/licenses/>.
17	;
18
19	; -------------------
20	; Rousseau: # Fixes #
21	; -------------------
22	;
23	; v1.0.8
24	; ------
25	; - Changed version format to be more WarpIN compatible.
26	; This is a cosmetic change only.
27	; - Fixed driveletter feature which was broken in v1.07.
28	; - Reworked MBR-code to provide two I13X signatures.
29	; - Fixed booting older eCS installations on HPFS
30	; - Fixed booting Windows when installed in logical partition
31	; with loader on FAT32.
32	; - Corrected contact links.
33	; - Location of AUX parameters has changed.
34	; - Fixed DOS installer (AIRBOOT.COM)
35	;
36	; NOTE:
37	; AB v1.07 had a bug with saving and loading the correct size of the
38	; configuration. Therefore the CRC over the config was also calculated
39	; wrongly.
40	; While AB v1.0.8 fixes this, it has to use the v1.07 way of CRC calculation.
41	; Otherwise SET(A)BOOT from the eCS v2.1 would break because it sees
42	; a corrupt AiR-BOOT configuration.
43	; This means that the CRC over the AB config is calculated over 5 sectors
44	; instead of 7, just like in v1.07.
45	;
46	; NOTE:
47	; Because of space constraints most of the debug code has been commented
48	; out in this version.
49	; Possibly it will be re-enabled after code cleanup and changing to JWasm.
50	;
51	;
52	; v1.07
53	; -----
54	; # Huge Drives and LVM #
55	; When using disks >512GB under eComStation, the drive geometry changes to
56	; 127 or 255 sectors per track. Since LVM-info is written at the last sector
57	; of a track, and AiR-BOOT uses the geometry of the MBR, it cannot find the
58	; LVM-info and the eCS partition / volume bootsector.
59	; This has been fixed.
60	; Now, when an eCS-partition is discovered and the drive is >512GB, AiR-BOOT
61	; will use the eCS geometry to locate the LVM-info and the bootsector.
62	;
63	; # Special loader handling #
64	; The special handling of partition boot-loaders has been enhanced to
65	; enable booting of legacy sysems on huge drives with or without OS/2
66	; extended geometry.
67	;
68	; # eComStation boot-through after phase 1 #
69	; A special functionality is implemented to directly boot the newly
70	; installed system ; when installing eCS without showing the Boot Menu,
71	; independant of user settings.
72	; This works in conjuntion with the OS/2 specific SETABOOT.EXE program,
73	; also part of this AiR-BOOT package.
74	;
75	; # Math, Debug, Conv and Aux modules #
76	; These are used for 32-bit arithmatic on 16-bit code,
77	; debug the booting process, converting between data-types
78	; and outputting log-data to the com-port.
79	;
80	;
81	; v1.06
82	; -----
83	; This is the last version developed by Martin Kiewitz.
84	; It serves as the base for the versions above.
85	; Please do not post your feedback on sourceforge or bother Martin with
86	; regard to the above versions.
87	; Use the eCS bug-tracker or the Trac project-page at netlabs.
88	; See the documentation for the correct contact information.
89
90
91	;------------------------------------------------------------------------------
92	; AiR-BOOT / MAIN-CODE
93	;------------------------------------------------------------------------------
94	;
95
96
97	; ----------------------------
98	; Rousseau: # JUMPS disabled #
99	; ----------------------------
100	; We actually don't want to use this directive because it generates extra
101	; NOP instructions that we can do without.
102	; Relative conditional jumps that are out-of-range are manually reworked by
103	; skipping an unconditional jump to the target on base of complementary
104	; condition logic and temporary labels.
105	; TASM also has a bug in that when the .ERR2 directive is used when
106	; the .386 directive is in effect, the JUMPS directive is also active
107	; and cannot be turned off.
108	; NOJUMPS seems to have no effect in this situation.
109	; In this case 4 NOP instructions are generated after forward referencing jump
110	; instructions, to allow for automatic recoding by TASM.
111	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
112	;
113	;JUMPS
114	;
115
116	;
117	; If defined then each module is prefixed with it's name.
118	; This is used for debugging purposes.
119	; It should be off in release code.
120	;
121	;ModuleNames equ 1
122
123
124
125	;
126	; The first harddisk is BIOS coded 80h.
127	; This makes a total of 128 disk could be supported using this coding.
128	; This value is used to store disk-information and this info is allocated
129	; in the BSS.
130	;
131	MaxDisks equ 64
132
133	;
134	; If defined then include DEBUG.ASM and output debug-info to serial-port.
135	;
136	;AuxDebug equ 1
137
138	; Com-port for debugging, 0 is disabled
139	BiosComPort equ 0
140
141
142	;
143	; bits 7-5 = datarate
144	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
145	; bits 4-3 = parity
146	; (00 or 10 = none, 01 = odd, 11 = even)
147	; bit 2 = stop-bits
148	; (set = 2 stop-bits, clear = 1 stop-bit)
149	; bits 1-0 = data-bits
150	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
151	;
152
153	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
154	AuxInitParms equ 11100011b
155
156	; Default word value for BIOS_AuxParms variable
157	; Note that is has moved since v1.07
158	BIOS_AuxParmsDefault equ (AuxInitParms SHL 8) OR BiosComPort
159
160	;
161	; If ReleaseCode is not defined, it will produce debug-able code...
162	;
163	ReleaseCode equ -1
164
165
166
167
168
169	;
170	; All Special Equs for this project
171	;
172
173	; Use different addresses depending on whether in pre-boot
174	; or debug environment.
175	IFDEF ReleaseCode
176	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
177	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
178	ELSE
179	StartBaseSeg equ 03A98h ; Adjust to DOS segment
180	; Rousseau: where does this value
181	; come from ?
182	; Should be CS;
183	; Rectified in actual code by
184	; ignoring this value.
185	StartBasePtr equ 00100h ; We are a .com file,DOS is active
186	ENDIF
187
188	; Address labels after code-move
189	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
190	BootBasePtr equ 0h ; We put our MBR to this location
191	BootBaseExec equ BootBasePtr+offset MBR_RealStart
192	StackSeg equ 07000h ; Put the stack below the code
193
194	; Video pages, no INT 10h is used for menu-drawing etc.
195	VideoIO_Page0 equ 0B800h
196	VideoIO_Page1 equ 0B900h
197	VideoIO_Page2 equ 0BA00h
198	VideoIO_Page4 equ 0BC00h
199	VideoIO_FXSegment equ 0A000h
200
201	; Include
202	Include ..\INCLUDE\asm.inc
203	;Include ..\INCLUDE\DOS\airboot.inc ; does not exist anymore
204
205	; Special line-drawing characters
206	TextChar_WinLineRight equ 0C4h ; 'Ä'
207	TextChar_WinLineDown equ 0B3h ; '³'
208	TextChar_WinRep1 equ 0D1h ; 'Ñ'
209	TextChar_WinRep2 equ 0C5h ; 'Å'
210	TextChar_WinRep3 equ 0CFh ; 'Ï'
211	TextChar_WinRep4 equ 0B5h ; 'µ'
212	TextChar_WinRep5 equ 0C6h ; 'Æ'
213	TextChar_WinRep6 equ 0D8h ; 'Ø'
214
215	; Offsets for Partition-Entries in MBR/EPRs
216	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
217	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
218	LocBRPT_BeginCHS equ 1 ; Combined 10-bits cyl with 6 bits
219	LocBRPT_BeginHead equ 1 ; Start head (0<=H<255) 255 is invalid !
220	LocBRPT_BeginSector equ 2 ; Start sector (1<=S<=255)
221	LocBRPT_BeginCylinder equ 3 ; Start cylinder (0<=C<[1024,16384,65536,n])
222	LocBRPT_SystemID equ 4 ; Type of system using the partition
223	LocBRPT_EndCHS equ 5 ; Same for end of partition
224	LocBRPT_EndHead equ 5
225	LocBRPT_EndSector equ 6
226	LocBRPT_EndCylinder equ 7
227	LocBRPT_RelativeBegin equ 8
228	LocBRPT_AbsoluteLength equ 12
229
230	LocBR_Magic equ 510
231
232
233	; Used as a quick compare in LVM.ASM
234	LocLVM_SignatureByte0 equ 02h
235
236	; Offsets for LVM Information Sector.
237	; These are relative to the start of the LVM sector.
238	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
239	LocLVM_CRC equ 08h ; CRC is a DWORD
240	LocLVM_Heads equ 1ch ; Number of heads
241	LocLVM_Secs equ 20h ; Sectors per Track
242	LocLVM_DiskName equ 24h ; Name of the disk
243	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
244	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
245
246	; An LVM info-sector can contain information on max. 4 partitions.
247	; All 4 entries will be used when there 4 primary partitions defined.
248	; For logical partitions, the LVM info-sector is located below the start
249	; of the logical partition and only one LVM entry is used in that logical
250	; LVM info-sector.
251	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
252
253	; Offsets for LVM entry.
254	; These are relative to the start of the entry.
255	LocLVM_VolumeID equ 00h ; is DWORD
256	LocLVM_PartitionID equ 04h ; is DWORD
257	LocLVM_PartitionSize equ 08h ; is DWORD
258	LocLVM_PartitionStart equ 0ch ; is DWORD
259	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
260	LocLVM_Startable equ 11h ; is Startable (newly installed system)
261	LocLVM_VolumeLetter equ 12h ; is Drive Letter for partition (C-Z or 0)
262	LocLVM_Unknown equ 13h ; unknown BYTE
263	; Truncated to 11 chars when displayed in menu.
264	; MiniLVM sets both to the same value.
265	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
266	; Same goes for LocLVM_DiskName.
267	LocLVM_VolumeName equ 14h ; 20 bytes
268	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
269
270
271
272	; Offsets for IPT (Internal Partition Table)
273	LocIPT_MaxPartitions equ partition_count ; 45 in v1.07
274	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
275	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
276	LocIPT_Serial equ 0 ; Serial from MBR ?
277	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
278	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
279	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
280	LocIPT_Flags equ 17 ; AiR-BOOT Flags for partition (see below)
281	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
282	LocIPT_LocationBegin equ 20 ; Begin of Partition
283	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
284	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
285	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
286
287	; AiR-BOOT IPT-Flags
288	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
289	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
290
291	Flags_BootAble equ 00000001b
292	Flags_VIBR_Detection equ 00000010b
293	Flags_HideFeature equ 00000100b
294	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
295	Flags_ExtPartMShack equ 00010000b ; Extended Partition M$-Hack req ?
296	Flags_NoPartName equ 01000000b
297	Flags_NowFound equ 10000000b ; temp only in OldPartTable
298	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
299
300	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
301	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
302	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
303	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
304
305	; Navigation keys
306	Keys_Up equ 48h
307	Keys_Down equ 50h
308	Keys_Left equ 4Bh
309	Keys_Right equ 4Dh
310	Keys_PageUp equ 49h
311	Keys_PageDown equ 51h
312	Keys_GrayPlus equ 4Eh
313	Keys_GrayMinus equ 4Ah
314	Keys_Plus equ 1Bh
315	Keys_Minus equ 35h
316	Keys_Enter equ 1Ch
317	Keys_ESC equ 1h
318	Keys_F1 equ 3Bh
319	Keys_F10 equ 44h
320	Keys_C equ 2Eh ; Add. Check auf Ctrl!
321	Keys_Y equ 2Ch
322	Keys_Z equ 15h
323	Keys_N equ 31h
324	Keys_TAB equ 0Fh
325	Keys_Delete equ 53h
326	Keys_Backspace equ 0Eh
327	Keys_Space equ 20h
328
329	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
330
331
332	; ------------------------------------------
333	; Rousseau: # Changed this from .386 to .286
334	; ------------------------------------------
335	; Because of the TASM-bug the processor had to be changed to turn JUMPS
336	; off. Existing movzx instructions were replaced with 286 equivalent code.
337	; Out of range relative jumps have been recoded.
338	; AiR-BOOT can now run on a 286 processor :-)
339	.286
340
341	; This influences the uses directive and other stuff,
342	; like calling-style.
343	; The model itself,large, has no effect because we generate
344	; a binairy image and not a segmented executable.
345	.model large, basic
346
347	; Our code-segment starts here.
348	; We are running in 16-bit and we like it
349	code_seg segment public use16
350	assume cs:code_seg, ds:code_seg, es:nothing, ss:nothing
351
352
353
354	;==============================================================================
355	; Sector 1
356
357
358	; We are not a .com file at 100h but a binary image
359	; of which only the 1st sector gets loaded at 07c00h.
360	org 00000h ; Sector 1
361
362	; Start of sector 1
363	; This is the MBR, note the AiRBOOT signature, it's date (2006), version and
364	; language.
365	; Version 1.07 was intruduced in 2011.
366	; It fixes issues with huge drives and lvm and more.
367
368	sos1:
369
370	; ---------------------------------------------
371	; Rousseau: # Combined letter and jump offset #
372	; ---------------------------------------------
373	; My guess is Martin had a short jump followed by the AiRBOOT signature at first.
374	; Then he encountered strange behaviour by some M$ operating-systems if the
375	; the first insruction was not a CLI.
376	; But there was no room to insert the CLI and of course he did not want to
377	; change the location of the AiRBOOT signature.
378	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
379	; jump that uses the 'A' of the AiRBOOT signature as the jump displacement.
380
381
382	;------------------------------------------------------------------------------
383	AiR_BOOT: cli ; Some M$ operating systems need a CLI
384	; here otherwise they will go beserk
385	; and will do funny things during
386	; boot phase, it's laughable!
387	db 0EBh ; JMP-Short -> MBR_Start
388	; Uses the 'A' as the displacement !
389	db 'AiRBOOT', 20h, 01h, 20h, 12h, 01h, 08h, TXT_LanguageID
390
391	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
392	db 1 ; Total Sectors Count,
393	; Will get overwritten by FIXBSET.exe
394	MBR_CheckCode dw 0 ; Check-Sum for Code
395
396	;
397	; No single instruction below should be changed, added or removed in the code
398	; below as this will cause the jump-link to go haywire.
399	;
400	MBR_Start: sti ; This opcode is dedicated to:
401	cld ; =MICROSOFT JUMP DEPARTMENT=
402
403	; Setup some base stuff
404	; AX got loaded wrongly for debug, changed the instructions
405	; without modifying the number of bytes.
406	; Don't comment-out the redundant instruction below because this
407	; will change the number of bytes and break the jump-chain.
408	mov ax, StartBaseSeg ; The segment we are moving ourself from (NOT USED)
409	;mov ds, ax
410	push cs
411	pop ds
412	mov si, StartBasePtr ; The offset we are moving ourself from
413	mov ax, BootBaseSeg ; The target segment we are moving ourself to
414	mov es, ax
415	mov di, BootBasePtr ; The target offset we are moving ourself to
416
417	; Depending on pre-boot or debug,
418	; only move first 512 bytes or the whole she-bang++ (65400 bytes)
419	IFDEF ReleaseCode
420	mov cx, 256 ; Pre-boot environment
421	ELSE
422	mov cx, 32700 ; Debug environment (move ~64kB)
423	ENDIF
424
425	;
426	; LET's MOVE OURSELVES !
427	;
428	rep movsw
429
430	; Code an intersegment jump to the new location
431	db 0EAh
432	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
433	dw BootBaseSeg ; This is 08000h
434	; jmp far ptr BootBaseSeg:BootBaseExec
435
436
437	;
438	; Some MBR-functions to provide absolute minimum functionality.
439	;
440
441	;
442	; Entry-point for halting the system.
443	;
444	MBR_HaltSystem:
445	mov ax, 8600h
446	xor cx, cx
447	mov dx, 500
448	int 15h ; Wait to display the whole screen :]
449	MBR_HaltSys: cli
450	jmp MBR_HaltSys
451
452
453
454	; Comport settings
455	; It had to be moved to create room for the double I13X
456	; signature.
457	; It cannot be in the config-area (sector 55)
458	; because that area
459	; is crc-protected.
460	BIOS_AuxParms dw BIOS_AuxParmsDefault
461
462	;
463	; Reserved space
464	; Should check overflow here, later...
465	;
466	reserved db 6 dup(0)
467
468
469	;
470	; We jump here after the first instructions of the
471	; AiR-BOOT signature.
472	; So we ensure the jump is always at this offset.
473	org 044h
474	jmp MBR_Start ; We jump here, because I needed to
475	; insert a CLI on start and did not
476	; want to change AiR-BOOT detection
477	; because of Microsoft inventions...
478	;
479	; Entry-point when loading fails.
480	;
481	db 'LOAD ERROR!', 0
482	MBR_LoadError Proc Near
483	mov si, offset $-12
484	push cs
485	pop ds
486	call MBR_Teletype
487	MBRLE_Halt:
488	jmp MBRLE_Halt
489	MBR_LoadError EndP
490
491
492	;
493	; Entry-point when saving fails.
494	;
495	db 'SAVE ERROR!', 0
496	MBR_SaveError Proc Near
497	mov si, offset $-12
498	push cs
499	pop ds
500	call MBR_Teletype
501	MBRSE_Halt:
502	jmp MBRSE_Halt
503	MBR_SaveError EndP
504
505
506	; Put text on the screen using the BIOS tele-type function.
507	; No attributes like color are supported.
508	; In: SI - Pointer to begin of string (EOS is 0)
509	; Destroyed: SI
510	MBR_Teletype Proc Near Uses ax bx cx
511	mov ah, 0Eh
512	mov bx, 7
513	MBRT_Loop:
514	lodsb
515	or al, al
516	jz MBRT_End
517	int 10h
518	jmp MBRT_Loop
519	MBRT_End:
520	ret
521	MBR_Teletype EndP
522
523	;
524	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
525	;
526
527	; In: BX - Base Check, DS:SI - Pointer to 512-byte-area to be included
528	; Out: BX - Base Check Result
529	; Destroyed: SI will get updated (+512)
530	MBR_GetCheckOfSector Proc Near Uses ax cx
531	mov cx, 256
532	MBRGCOS_Loop:
533	lodsw
534	xor ax, 0BABEh
535	xor bx, ax
536	loop MBRGCOS_Loop
537	or bx, bx
538	jnz MBRGCOS_NoFixUp
539	mov bx, 1 ; dont allow 0, cause 0 == empty
540	MBRGCOS_NoFixUp:
541	ret
542	MBR_GetCheckOfSector EndP
543
544
545
546
547
548
549	;
550	; This is where the rest of AiR-BOOT gets loaded.
551	;
552
553	;------------------------------------------------------------------------------
554	MBR_RealStart:
555	mov ax, StackSeg ; 07000h, below the moved code
556	mov ss, ax
557	;mov sp, 7FFFh ; Odd stack-pointer ??
558	mov sp, 7FFEh ; Even is better
559	mov ax, es ; ES holds segment where we moved to
560	mov ds, ax ; Set DS==ES to Code Segment
561
562	; If we are in debug-mode, all code is moved already,
563	; so we can directly jump to it.
564	; One difference is that in debug-mode, the whole .com image is
565	; loaded by dos while when air-boot is active from the MBR it
566	; does the loading itself.
567	IFNDEF ReleaseCode
568	jmp AiR_BOOT_Start
569	ENDIF
570
571
572	; Load missing parts from harddrive...
573	; mov ax, cs ; actually obsolete
574	; mov es, ax ; actually obsolete
575
576	; Load the configuration-sectors from disk.
577	mov bx, offset Configuration
578	mov dx, 0080h ; First harddrive, Sector 55
579	mov cx, 0037h ; Is 55d is config-sector
580
581	; Call the i/o-part
582	call MBR_LoadConfig
583
584	jnc MBR_ConfigCopy_NoError
585
586	; Some error occured
587	MBR_ConfigCopy_LoadError:
588	call MBR_LoadError ; Will Abort BootUp
589
590	; Load the code sectors
591	MBR_ConfigCopy_NoError:
592	mov bx, offset FurtherMoreLoad
593	mov dx, 0080h ; First harddrive
594	mov cx, 0002h ; Second sector
595	mov ah, 02h
596
597	mov al, ds:[10h] ; Number of code sectors
598	int 13h
599	jnc MBR_RealStart_NoError
600	jmp MBR_ConfigCopy_LoadError
601
602
603
604	; [v1.05+]
605	; Signature for IBM's LVM to detect our "powerful" features ;)
606	; [v1.08+]
607	; Reworked MBR code to be able to create a double 'I13X' signature.
608	; MBR's created with LVM eCS v1.x have the signature at 0d5h
609	; MBR's created with LVM eCS v2.x have the signature at 0d0h
610	; See eCS bugtracker issue #3002
611	db 0,'I13X',0,'I13X'
612
613
614	MBR_RealStart_NoError:
615	; Now Check Code with CheckSum
616	mov si, offset FurtherMoreLoad
617
618	;movzx cx, bptr ds:[10h]
619	mov cl, ds:[10h]
620	mov ch,0
621
622	xor bx, bx
623	MBR_RealStart_CheckCodeLoop:
624	call MBR_GetCheckOfSector
625	loop MBR_RealStart_CheckCodeLoop
626
627
628	cmp MBR_CheckCode, bx
629	je MBR_RealStart_CheckSuccess
630
631	mov si, offset TXT_ERROR_Attention
632	call MBR_Teletype
633	mov si, offset TXT_ERROR_CheckCode
634	call MBR_Teletype
635	mov si, offset TXT_ERROR_CheckFailed
636	call MBR_Teletype
637	jmp MBR_HaltSystem
638	MBR_RealStart_CheckSuccess:
639	jmp AiR_BOOT_Start
640
641
642
643
644
645	;------------------------------------------------------------------------------
646	Include TEXT\TXTMBR.asm ; All translateable Text in MBR
647	;------------------------------------------------------------------------------
648
649	eot:
650
651	; Check for overlap
652	slack00 = eos1 - eot
653	IF slack00 LT 0
654	.ERR2 "Location Overlap slack00 !"
655	ENDIF
656
657
658	; bios aux
659
660	eos1:
661
662	; This is an ugly kludge function to create space for the
663	; double 'I13X' signature.
664	; It loads the configuration sectors, but bx,cx and dx are not initialized
665	; in this function. That's done around line 500.
666	; Putting this few bytes here creates just enough room.
667	MBR_LoadConfig Proc Near
668	; Changed from conditional assembler to calculated value
669	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
670	; Size of the ab-configuration in 512 byte sectors
671	mov al, (MBR_BackUpMBR - Configuration) / 200h
672	mov ah,02h
673	int 13h
674	ret
675	MBR_LoadConfig EndP
676
677	org 001B8h
678
679	; Disk Signature
680	db 'DSIG'
681
682	; Unused word
683	dw '$$'
684
685	; Partition Table
686	db 16 dup('0')
687	db 16 dup('1')
688	db 16 dup('2')
689	db 16 dup('3')
690
691	; Boot Sigbature
692	dw 0aa55h
693
694	org 00200h
695	; End of sector 1
696	eos1a:
697
698	; Check for overlap
699	slack01 = sos2 - eos1a
700	IF slack01 LT 0
701	.ERR2 "Location Overlap slack01 !"
702	ENDIF
703
704
705	;==============================================================================
706	; Sector 2
707
708	;
709	; Here starts the second sector, sector 2
710	;
711	org 00200h
712	; Start of sector 2.
713	sos2:
714
715	;
716	; Everything beyond this point is loaded on startup
717	; and is NOT existant at first
718	;
719	FurtherMoreLoad:
720
721	;
722	; Filesystem table correlating id with name.
723	;
724
725	; first Normal-Partition-ID, Hidden-Partition-ID
726	; and Default-Partition-Flags.
727	; 01h -> Boot-Able
728	; 10h -> FAT32 - Name Getting Scheme
729	; 20h -> No Name To Get (use Partition Name)
730	; 40h -> 'L' flag possible
731	db 'AiRSYS-TABLE'
732	FileSysIDs: db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
733	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
734	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
735	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
736	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
737	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
738	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
739	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
740	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
741	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
742	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
743	db 16 dup (0)
744
745	FileSysNames: db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
746	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
747	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
748	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
749	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
750	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
751	db ' ', ' ', ' ', ' '
752	db ' ', ' ', ' ', ' '
753	db ' ', ' ', ' ', ' '
754	db ' ', 'Kernel ', ' ', '0V-Award'
755	db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
756	; -> 44 Partition-Types
757
758	; End of sector 2.
759	eos2:
760
761
762
763	; Check for overlap
764	slack02 = sos3 - eos2
765	IF slack02 LT 0
766	.ERR2 "Location Overlap slack02 !"
767	ENDIF
768
769
770
771
772
773	;==============================================================================
774	; Sector 3
775	org 00400h
776	; Start of sector 3.
777	sos3:
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793	; ##############################################
794	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
795	; ##############################################
796
797
798
799	AiR_BOOT_Start: nop
800
801	;jmp skip
802
803	; Rousseau:
804	; I should cleanup my garbage here...
805
806	; Initialize Variable-Tables, Detections, etc.
807	call PRECRAP_Main
808
809	; Number of harddisks is now known
810
811	call PARTSCAN_ScanForPartitions
812
813
814	; Number of disks found
815	mov si, offset DisksFound
816	call MBR_Teletype
817
818	mov al, [TotalHarddiscs]
819	call VideoIO_SyncPos
820	call VideoIO_PrintByteDynamicNumber
821	xor si,si
822	call MBR_TeletypeNL
823
824	; Number of bootable systems indicator
825	mov si, offset PartitionsFound
826	call MBR_Teletype
827
828	mov al, [CFG_Partitions]
829	call VideoIO_SyncPos
830	call VideoIO_PrintByteDynamicNumber
831
832	xor si,si
833	call MBR_TeletypeNL
834	call MBR_TeletypeNL
835
836	call VideoIO_SyncPos
837
838	mov dl,80h
839	call VideoIO_DumpDiskInfo
840
841	;
842	; Enumberate Bootable Systemen by name
843	; And prepare Phase 1 if active
844	;
845	mov si, offset PartitionTable
846	xor cx,cx
847	mov cl,[CFG_Partitions]
848	MBR_Parts:
849	add si, 4
850	push si
851	push si
852	;call MBR_TeletypeVolName
853	pop si
854	call PART_IsInstallVolume
855	jnc MBR_Parts_NI
856
857	; install volume
858	mov al,' '
859	mov bl,7
860	mov ah, 0eh
861	int 10h
862
863	mov al,'('
864	mov bl,7
865	mov ah, 0eh
866	int 10h
867
868	mov al,[CFG_Partitions]
869	sub al,cl
870	;inc al
871	;mov [Menu_EntryAutomatic],al
872	mov [CFG_PartAutomatic],al ; Setup entry for install-volume
873	mov [CFG_PartLast],al
874	mov ah, [eCS_InstallVolume] ; 1st byte is 0 if no phase 1 active
875	test ah,ah ; test the byte, ZF is 0 if phase 1 active
876	lahf ; flags in ah
877	xor ah, 40h ; complement ZF
878	and ah, 40h ; mask ZF
879	shr ah, 6 ; move ZF to LSB
880	mov [CFG_AutomaticBoot], ah ; automatic boot if phase 1 is active
881	mov [eCS_InstallVolume], 0 ; disable phase 1 for next boot
882
883	add al,'1'
884	mov bl,7
885	mov ah, 0eh
886	int 10h
887
888	mov al,')'
889	mov bl,7
890	mov ah, 0eh
891	int 10h
892
893	mov bx,cx
894
895	MBR_Parts_NI:
896	xor si,si
897	;call MBR_TeletypeNL
898	pop si
899	add si, 30
900	loop MBR_Parts
901
902
903
904
905	; Index of automatic start partition
906	; mov si, offset AutoStartPart
907	;call MBR_Teletype
908
909	mov al, [CFG_PartAutomatic]
910	add al, 31h
911	mov ah, 09h
912	mov bx, 15
913	mov cx, 1
914	;int 10h
915
916	mov al, [CFG_PartAutomatic]
917	add al, 31h
918	mov ah, 0eh
919	mov bx, 15
920	mov cx, 1
921	;int 10h
922
923	xor si,si
924	call MBR_TeletypeNL
925	xor si,si
926	call MBR_TeletypeNL
927
928	mov ax,[BIOS_AuxParms]
929	;call VideoIO_SyncPos
930	push ax
931	add al,'0'
932	mov bl,7
933	mov ah, 0eh
934	;int 10h
935	pop ax
936	xchg al,ah
937	sub al,0a2h
938	mov bl,7
939	mov ah, 0eh
940	;int 10h
941
942
943	call MBR_TeletypeSyncPos
944
945	xor si,si
946	call MBR_TeletypeNL
947	call MBR_TeletypeNL
948
949
950
951	mov si, offset ShowMenu
952	call MBR_TeletypeBold
953
954
955	skip:
956
957
958
959	;
960	; ####################### WAIT FOR KEY #########################
961	;
962
963
964	; Rousseau:
965	; Wait for key so we can see debug log if ab-menu hangs.
966	;;xor ax, ax
967	;;int 16h
968
969	;call SOUND_Beep
970
971	; Rousseau: delayed save of video-page
972
973	mov ax, VideoIO_Page1
974	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
975
976	;call SOUND_Beep
977
978
979	;
980	; COM-PORT DEBUG
981	;
982	; call AuxIO_TeletypeNL
983	mov si, offset PartitionTable
984	; call AuxIO_DumpSector
985	; call AuxIO_TeletypeNL
986
987
988	; Save configuration so phase1 boot-through is disabled
989	; on next boot.
990	; Moved here to fix that Esc out of SETUP would also save.
991	; So moved above the MBR_Main_ReEnterSetup label.
992	call DriveIO_SaveConfiguration
993
994
995
996	;
997	; RE-ENTER SETUP
998	;
999	MBR_Main_ReEnterSetup:
1000	call SETUP_CheckEnterSETUP
1001
1002	;call SOUND_Beep
1003
1004	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
1005	call AFTERCRAP_Main
1006
1007	; [Linux support removed since v1.02]
1008	; ; Now get FAT16-Linux Kernel Partition, If requested
1009	; cmp [CFG_LinuxKrnlPartition], 0FFh
1010	; je MBR_Main_NoLinuxKrnlPartition
1011	; call LINUX_InitFAT16access
1012	; MBR_Main_NoLinuxKrnlPartition:
1013
1014
1015	MBR_Main_ReEnterBootMenuPre:
1016
1017	; SetUp PartitionPointers for BootMenu (filter non-bootable)
1018	call PART_CalculateMenuPartPointers
1019
1020	; ...and count that one...
1021	cmp PartitionPointerCount, 0
1022	jne MBR_Main_SomethingBootAble
1023	mov si, offset TXT_NoBootAble
1024	call MBR_Teletype
1025	jmp MBR_HaltSystem
1026
1027	MBR_Main_SomethingBootAble:
1028	; FixUp Values, define Timed Setup booting, etc.
1029	call PART_FixUpDefaultPartitionValues
1030
1031
1032
1033	; -------------------------------------------------- BOOT-MENU
1034	MBR_Main_ReEnterBootMenu:
1035	call BOOTMENU_ResetMenuVars ; reset has to be done
1036	test CFG_AutomaticBoot, 1
1037	jz MBR_Main_NoAutomaticBooting
1038	; ------------------------------------------ AUTOMATIC BOOTING
1039	; Select automatic partition, disable automatic booting for
1040	; next time and boot system...
1041	mov CFG_AutomaticBoot, 0
1042	call PASSWORD_AskSystemPwd
1043	mov al, Menu_EntryAutomatic
1044
1045	;mov al, 2
1046
1047	mov Menu_EntrySelected, al ; zero based
1048	jmp MBR_Main_NoBootMenu
1049
1050	MBR_Main_NoAutomaticBooting:
1051
1052	;call SOUND_Beep
1053
1054	test CFG_BootMenuActive, 0FFh
1055	jnz MBR_Main_GotBootMenu
1056	; ----------------------------------------------- NO BOOT-MENU
1057	; Select default partition and boot system...
1058	call PASSWORD_AskSystemPwd
1059
1060	;call VideoIO_DBG_WriteString2
1061
1062	mov al, Menu_EntryDefault
1063	;mov al,0 ; zero based
1064	mov Menu_EntrySelected, al
1065	jmp MBR_Main_NoBootMenu
1066
1067	MBR_Main_GotBootMenu:
1068	; ------------------------------------------ BOOT-MENU VISUALS
1069	call FX_StartScreen
1070
1071	;call SOUND_Beep
1072
1073	call BOOTMENU_BuildBackground
1074	call BOOTMENU_BuildMain
1075	call FX_EndScreenRight
1076	call PASSWORD_AskSystemPwd
1077	call BOOTMENU_ResetTimedBoot
1078
1079	;call SOUND_Beep
1080
1081	call BOOTMENU_Execute
1082
1083	;call SOUND_Beep
1084
1085	jc MBR_Main_ReEnterSetup
1086	call BOOTMENU_SetVarsAfterMenu
1087
1088	;call SOUND_Beep
1089
1090	; ---------------------------------------------------- BOOTING
1091	MBR_Main_NoBootMenu:
1092	call FX_StartScreen
1093	call BOOTMENU_BuildGoodBye
1094	call FX_EndScreenRight
1095	call PASSWORD_AskChangeBootPwd
1096
1097	IFNDEF ReleaseCode
1098	; Debug Code to terminate DOS .COM program - used for
1099	; testing AiR-BOOT
1100	int 3
1101	mov ax, 6200h
1102	int 21h
1103	mov es, bx
1104	mov ax, 4C00h ; Quit program
1105	int 21h
1106	ENDIF
1107	call ANTIVIR_SaveBackUpMBR
1108	mov dl, Menu_EntrySelected
1109
1110	; -------------------------------------------- START PARTITION
1111	call PART_StartPartition
1112
1113
1114
1115	;
1116	; Include other code-modules here.
1117	; Because TASM is a multiple pass assembler, forward references
1118	; are possible.
1119	;
1120	b_std_txt:
1121	Include REGULAR\STD_TEXT.asm ; Standard (non-translateable text)
1122	size_std_txt = $-b_std_txt
1123
1124	b_driveio:
1125	Include REGULAR\DRIVEIO.asm ; Drive I/O, Config Load/Save
1126	size_driveio = $-b_driveio
1127
1128	b_videoio:
1129	Include REGULAR\ViDEOIO.asm ; Video I/O
1130	size_videoio = $-b_videoio
1131
1132	b_timer:
1133	Include REGULAR\TIMER.asm ; Timer
1134	size_timer = $-b_timer
1135
1136	b_partmain:
1137	Include REGULAR\PARTMAIN.asm ; Regular Partition Routines
1138	size_partmain = $-b_partmain
1139
1140	b_partscan:
1141	Include REGULAR\PARTSCAN.asm ; Partition Scanning
1142	size_partscan = $-b_partscan
1143
1144	b_bootmenu:
1145	Include REGULAR\BOOTMENU.asm ; Boot-Menu
1146	size_bootmenu = $-b_bootmenu
1147
1148	b_password:
1149	Include REGULAR\PASSWORD.asm ; Password related
1150	size_password = $-b_password
1151
1152	b_other:
1153	Include REGULAR\OTHER.asm ; Other Routines
1154	size_other = $-b_other
1155
1156	; Rousseau: Special modules moved upwards.
1157	b_main:
1158	Include SETUP\MAiN.ASM ; The whole AiR-BOOT SETUP
1159	size_main = $-b_main
1160
1161
1162	IFDEF TXT_IncludeCyrillic
1163	b_ccharset:
1164	Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
1165	size_ccharset = $-b_ccharset
1166	ENDIF
1167
1168	b_math:
1169	Include REGULAR\MATH.ASM ; Math functions (like 32-bit multiply)
1170	size_math = $-b_math
1171
1172	b_conv:
1173	Include REGULAR\CONV.ASM ; Various conversion routines
1174	size_conv = $-b_conv
1175
1176	IFDEF AuxDebug
1177	b_debug:
1178	; Include REGULAR\DEBUG.ASM ; Various debugging routines,
1179	; uses AUXIO and CONV
1180	size_debug = $-b_debug
1181	ENDIF
1182
1183	b_auxio:
1184	;Include REGULAR\AUXIO.ASM ; Com-port support for debugging
1185	size_auxio = $-b_auxio
1186
1187	; Rousseau: moved upwards
1188	;IFDEF TXT_IncludeCyrillic
1189	; Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
1190	;ENDIF
1191
1192	b_lvm:
1193	Include SPECiAL\LVM.asm ; LVM-specific code
1194	size_lvm = $-b_lvm
1195
1196
1197	; End of sector 3.
1198	eos3:
1199
1200
1201	; Check for overlap
1202	slack03 = sos36 - eos3
1203	IF slack03 LT 0
1204	.ERR2 "Location Overlap slack03 !"
1205	ENDIF
1206
1207
1208	;==============================================================================
1209
1210	;
1211	; This is the AiR-BOOT MBR-Protection Image.
1212	; 04600 / 200h = 23h = 35d sectors are before this point.
1213	; The stuff generated here gets overwritten when the MBR_PROT.ASM
1214	; module, which is assembled separately, gets merged.
1215	; So you won't find the string below in the generated binary.
1216	;
1217	org 04600h ; Sector 36-37
1218
1219	; Start of sector 36.
1220	sos36:
1221
1222	MBR_Protection: db 'AiR-BOOT MBR-Protection Image'
1223	; Hardcoded to 1k (1024 bytes)
1224	db 1024-($-MBR_Protection) dup('X')
1225
1226	; End of sector 37, yes this section is 2 sectors long.
1227	eos37:
1228
1229
1230
1231	; Check for overlap
1232	slack04 = sos38 - eos37
1233	IF slack04 LT 0
1234	.ERR2 "Location Overlap slack04 !"
1235	ENDIF
1236
1237
1238
1239
1240	;==============================================================================
1241	; Sector 38-x
1242	;
1243	; This section contains translatable texts.
1244	;
1245	org 04A00h
1246
1247	; Start of sector 28.
1248	sos38:
1249
1250	b_txtother:
1251	Include TEXT\TXTOTHER.asm ; All translateable Text-Strings
1252	size_txtother = $-b_txtother
1253
1254	b_txtmenus:
1255	Include TEXT\TXTMENUS.asm ; All translateable Menu-text
1256	size_txtmenus = $-b_txtmenus
1257
1258	b_charset:
1259	Include TEXT\CHARSET.asm ; Special Video Charsets (if needed)
1260	size_charset = $-b_charset
1261
1262
1263	;
1264	; Here is room for more code.
1265	; Let's move the special modules here...
1266	; The come from the previous section.
1267	;
1268	b_virus:
1269	Include SPECiAL\ViRUS.asm ; Virus Detection / Anti-Virus
1270	size_virus = $-b_virus
1271	; [Linux support removed since v1.02]
1272	;Include SPECiAL\FAT16.asm ; FAT-16 Support
1273	;Include SPECiAL\LINUX.asm ; Linux Kernel Support
1274	b_billsuxx:
1275	Include SPECiAL\F00K\BILLSUXX.asm ; Extended Partition - Microsoft-Hack
1276	size_billsuxx = $-b_billsuxx
1277
1278	b_sound:
1279	Include SPECiAL\SOUND.asm ; Sound
1280	size_sound = $-b_sound
1281
1282	b_apm:
1283	Include SPECiAL\APM.asm ; Power Managment Support
1284	size_apm = $-b_apm
1285
1286	b_fx:
1287	Include SPECiAL\FX.asm ; l33t Cooper-Bars/Scrolling <bg>
1288	size_fx = $-b_fx
1289
1290	;b_lvm:
1291	;Include SPECiAL\LVM.asm ; LVM-specific code
1292	;size_lvm = $-b_lvm
1293
1294
1295
1296
1297
1298	;
1299	; Let's make this always the last module in this section.
1300	;
1301	Include BLDDATE.asm ; Build Date generated by _build.cmd
1302
1303	; End of sector x depending on size of translatable texts.
1304	eosx:
1305
1306	org 06A00h - 4
1307	;db 'BABE'
1308
1309	org 06A00h
1310	; db 'FACE'
1311
1312	; Check for overlap
1313	slack05 = sos55 - eosx
1314	IF slack05 LT 0
1315	.ERR2 "Location Overlap slack05 !"
1316	ENDIF
1317
1318
1319
1320	;==============================================================================
1321	; Sector 55
1322
1323	;
1324	; This section contains the AiR-BOOT configuration.
1325	; Note that it has a version that should be updated
1326	; when stuff is added.
1327	; Also add stuff to the end so that offsets of other
1328	; variables remain vaild.
1329	;
1330	org 06C00h
1331	sos55:
1332
1333
1334	Configuration: ; THERE IS AN INVISIBLE CHAR HERE !!
1335	db 'AiRCFG-TABLE'
1336	db 01h, 07h, 'U' ; "Compressed" ID String
1337	; This is now version 1.07 to have it in sync with
1338	; the new code version for eCS.
1339	; Version 1.02 was for code 1.06, 1.03 was internal
1340	; and 1.04,1.05 and 1.06 do not exist.
1341	; It is not required for the config to have the
1342	; same version as the code, so in the future
1343	; the code version might be higher than the
1344	; config version if there are no changes to the latter.
1345
1346	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
1347	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
1348
1349	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
1350
1351	CFG_Partitions db 0 ; Count of partitions in IPT
1352	db 0 ; Was BootParts - Removed since v0.28b
1353	CFG_PartDefault db 0 ; Default-Partition (Base=0)
1354
1355	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
1356	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
1357	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
1358	CFG_TimedDelay dw 123 ; Timed Boot - Delay
1359	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
1360	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
1361	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
1362	CFG_IncludeFloppy db 0 ; Include Floppy Drives in Boot-Menu
1363	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
1364	; v0.29+ -> 2 - Detailed Bootmenu
1365	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
1366	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
1367	CFG_PasswordSystem db 0 ; Ask Password when booting System
1368	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
1369	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
1370	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
1371	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
1372	CFG_DetectVirus db 0 ; Detect Virus ?
1373	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
1374	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
1375	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
1376	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
1377	dw 07A53h
1378	dw 0E797h
1379	dw 0A896h
1380	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
1381	dw 07A53h
1382	dw 0E797h
1383	dw 0A896h
1384	db 0 ; Rude-Protection - Removed since v0.28b
1385	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
1386	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
1387	; 0 - Do Nothing
1388	; 1 - Reset Time
1389	; 2 - Stop Time
1390	CFG_MakeSound db 0 ; Should be clear ;)
1391	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
1392	CFG_ResumeBIOSbootSeq db 0 ; If BIOS Boot Sequence should be resumed
1393	; 0 - Disabled
1394	; 1 - CD-ROM
1395	; 2 - Network
1396	; 3 - ZIP/LS120
1397	CFG_CooperBars db 0 ; If Cooper Bars should be shown
1398	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
1399	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
1400	; FFh -> Disabled
1401	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
1402	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
1403	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
1404	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
1405	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
1406	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
1407	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
1408
1409
1410	;
1411	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
1412	;
1413
1414
1415	eoc:
1416
1417	; Check for overlap
1418	slack05a = soiv - eoc
1419	IF slack05a LT 0
1420	.ERR2 "Location Overlap slack05a !"
1421	ENDIF
1422
1423	; Allways have the name of the installation volume
1424	; at this offset.
1425	; So future config changes will not break auto-install.
1426	org 06D00h
1427
1428	soiv:
1429
1430	; SET(A)BOOT stores the volume name of the eCS system being installed here.
1431	; It is truncated to 11 chars because AiR-BOOT currently does not support
1432	; longer labelnames. The name is also capitalized.
1433	;eCS_InstallVolume db 12 dup (0)
1434	;eCS_InstallVolume db 'HIGHLOG' ,0
1435	eCS_InstallVolume db 0,'NOPHASEONE' ,0
1436	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
1437	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
1438	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
1439
1440
1441
1442	; End of sector 55.
1443	eos55:
1444
1445
1446
1447	; Check for overlap
1448	slack06 = sosvs - eos55
1449	IF slack06 LT 0
1450	.ERR2 "Location Overlap slack06 !"
1451	ENDIF
1452
1453
1454
1455	; VIR variables are for the AiR-BOOT Anti Virus Code
1456	; Most of them are backups of Interrupt Points, so we can check, if a
1457	; stealth virus is on-line, we can intercept its call.
1458	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
1459	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
1460	; from working, so the user has to press reset. That's saver than a Reboot.
1461	;
1462	; If a virus is found on the partition to boot, the system will ONLY halt,
1463	; nothing more, because we can not remove it. The user shall do it :)
1464	; Those viruses are detected via a real nasty method...Checksum-Checking of the
1465	; boot-record, which is to be executed. If it does not match the one in our
1466	; internal partition table, we will stop. You may however switch this detection
1467	; off or just reset it by switching 'VIBR Detection'.
1468
1469
1470	;
1471	; 06DABh - 06C00h = 01ABh = 427 bytes.
1472	;
1473	org 06DABh ; 427 Boundry
1474
1475	sosvs:
1476
1477	AutoDrvLetter db 0
1478	AutoDrvLetterSerial dd 0
1479
1480	; This entry is also 34 bytes long
1481	BIOScontIPTentry:
1482	db 0, 0, 0, 0, ' '
1483	db 0, 0FEh, Flags_BootAble
1484	dw 0 ; No Checksum :)
1485	db 0, 1, 0
1486	db 0, 1, 0 ; Location of Partition/Boot Record
1487	dd 0, 0
1488
1489	; 466 Sub-Part
1490	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
1491	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
1492	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
1493
1494	; 478 Boundry
1495	; This entry is also 34 bytes long
1496	FloppyIPTentry: db 0, 0, 0, 0, 'FloppyDrive'
1497	db 0, 0FFh, Flags_BootAble
1498	dw 0 ; No Checksum :)
1499	db 0, 1, 0
1500	db 0, 1, 0 ; Location of Partition/Boot Record
1501	dd 0, 0
1502	;------------------------------------------------------------------------------
1503
1504	eosvs:
1505
1506	; Check for overlap
1507	slack07 = sos56 - eosvs
1508	IF slack07 LT 0
1509	.ERR2 "Location Overlap slack07 !"
1510	ENDIF
1511
1512
1513	;org 06E00h ; Sector 56-57
1514	org image_size - 0a00h - (image_size - image_size_60secs)
1515	sos56:
1516
1517
1518
1519	; Rousseau: This is the start of the AiR-BOOT IPT
1520
1521	PartitionTable: ; no-partitions detected... :]
1522	; db 1, 0, 0, 0, 'Harddisc 1'
1523	; db 0, 0FFh, Flags_BootAble
1524	; dw 0 ; No Checksum :)
1525	; db 0, 0, 1
1526	; db 0, 0, 1 ; Location of Partition/Boot Record
1527	; dd 0, 0
1528
1529	; Format is:
1530	;============
1531	; SerialNumber * 4
1532	; PartitionName * 11
1533	; Drive * 1
1534	; SystemID * 1 (means the partition type)
1535	; Flags * 1
1536	; Checksum * 2 (for virus checking)
1537	; LocationBegin * 3 (where the partition begins)
1538	; LocationPartTab * 3 (where the partition table is)
1539	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
1540	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
1541	; --------------------> 34 Bytes (total maximum partition-entries = 30)
1542
1543	db (partition_count * 34) dup ('P')
1544
1545	eos56:
1546
1547	; Check for overlap
1548	slack08 = eoiptsig - eos56
1549	IF slack08 LT 0
1550	.ERR2 "Location Overlap slack08 !"
1551	ENDIF
1552
1553
1554	;org 071F6h
1555	org image_size - 600h - (image_size - image_size_60secs) / 2 - 0ah
1556	soiptsig:
1557	db 'AiRBOOTPAR' ; 1K internal partition table
1558
1559
1560
1561	eoiptsig:
1562
1563	; Check for overlap
1564	slack09 = soipt - eoiptsig
1565	IF slack09 LT 0
1566	.ERR2 "Location Overlap slack09 !"
1567	ENDIF
1568
1569	;------------------------------------------------------------------------------
1570	;org 07200h ; Sector 58
1571	org image_size - 600h - (image_size - image_size_60secs) / 2
1572	soipt:
1573	sos58:
1574
1575	HidePartitionTable: db (partition_count * 30) dup (0FFh)
1576	; Format is:
1577	;============
1578	; PartitionPtr : BYTE * 30
1579	; --------------------> 30 Bytes * 30
1580
1581	DriveLetters: db partition_count dup (0)
1582	; Format is:
1583	;============
1584	; Drive-Letter : BYTE (80h-C:, 81h-D:)
1585	; --------------------> 1 Byte * 30
1586	eos58:
1587	eoipt:
1588
1589	; Check foroverlap
1590	slack10 = sohidsig - eoipt
1591	IF slack10 LT 0
1592	.ERR2 "Location Overlap slack10 !"
1593	ENDIF
1594
1595
1596
1597	;org 075F6h
1598	org image_size - 200h -0ah
1599
1600	sohidsig:
1601	db 'AiRBOOTHID' ; 1K internal Hide-partition table
1602
1603	eohidsig:
1604
1605	; Check for overlap
1606	slack11 = sohid - eohidsig
1607	IF slack11 LT 0
1608	.ERR2 "Location Overlap slack11 !"
1609	ENDIF
1610
1611
1612
1613
1614	;------------------------------------------------------------------------------
1615	;org 07600h ; Sector 60
1616	org image_size - 200h ; Sector 60
1617	sohid:
1618	sos60:
1619
1620	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
1621	AirBootRocks db 'AiR-BOOT Rocks!',0
1622
1623	eos60:
1624	eohid:
1625
1626	; Check for overlap
1627	slack12 = eoab - eohid
1628	IF slack12 LT 0
1629	.ERR2 "Location Overlap slack12 !"
1630	ENDIF
1631
1632
1633	;org 077FEh
1634	org image_size - 2
1635	dw 0BABEh
1636
1637	eoab:
1638
1639	;
1640	; End of AiR-BOOT code and data.
1641	;
1642
1643
1644	;
1645	; Below functions like a BSS segment, thus uninitialized data.
1646	;
1647	sobss:
1648	;------------------------------------------------------------------------------
1649	org 0A000h ; Uninitialized
1650	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
1651	BeginOfVariables:
1652	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
1653	LVMSector: db 512 dup (?) ; Temporary Sector for LVM
1654	TmpSector: db 512 dup (?) ; Temporary Sector
1655
1656	; Everything used to build a new IPT and reference it to the old one
1657	NewPartTable: db 1536 dup (?) ; New Partition Table
1658	NewHidePartTable: db partition_count * 30 dup (?) ; New Hide-Partition Table
1659	NewDriveLetters: db partition_count dup (?) ; Logical Drive-Letters
1660
1661	PartitionSizeTable: db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
1662	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
1663	PartitionPointerCount db ? ; Count of total Partition Pointers
1664	PartitionXref db partition_count dup (?) ; X-Reference Table
1665	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
1666	; 0 - no LVM support
1667	; 1 - LVM support, but no letter
1668	; 'C'-'Z' - assigned drive letter
1669
1670	TotalHarddiscs db ? ; Total harddrives (by POST)
1671	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
1672	NewPartitions db ? ; Freshly found partitions
1673	; Independent of SaveConfiguration
1674
1675	VideoIO_Segment dw ? ; Segment for Video I/O
1676
1677	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
1678	ExtendedAbsPosSet db ? ; If Absolute Position set
1679
1680	CurPartition_Location dw 4 dup (?) ; Where did current partition came from?
1681	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
1682	; (filled out by PreCrap)
1683	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
1684	; (for detailed error message)
1685
1686	; [Linux support removed since v1.02]
1687	;GotLinux db ? ; 1-Linux found
1688
1689	Menu_EntrySelected db ? ; Which partition we boot this time...
1690	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
1691	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
1692	Menu_TotalParts db ? ; Copy of CFG_BootParts
1693	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
1694	Menu_EntryDefault db ? ; Default Entry in filtered View
1695	Menu_EntryLast db ? ; LastBooted Entry in filtered View
1696	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
1697	; - All adjusted to menu locations
1698
1699	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
1700	PartSetup_ActivePart db ? ; Active Partition
1701	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
1702	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
1703	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
1704
1705	TimedBootEnable db ? ; Local Enable/Disable for timed boot
1706	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
1707	TimedSecondLeft db ? ; How many seconds are left till boom ?
1708	TimedSecondBack db ? ; To get a modification noticed
1709	TimedBootUsed db ? ; Timed Boot used for bootup ?
1710	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
1711	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
1712	SETUP_ExitEvent db ? ; Exit Event to end SETUP
1713	TempPasswordEntry db 17 dup (?)
1714	SETUP_OldPwd db 17 dup (?)
1715	SETUP_NewPwd db 17 dup (?)
1716	SETUP_VerifyPwd db 17 dup (?)
1717	StartSoundPlayed db ?
1718	ChangePartNameSave db ?
1719
1720	FX_UseCount dw ?
1721	FX_OverallTimer dw ?
1722	FX_WideScrollerTimer dw ?
1723	FX_WideScrollerCurPos dw ?
1724	FX_WideScrollerSpeed db ?
1725	FX_WideScrollerSpeedState db ?
1726	FX_WideScrollerDirection db ?
1727	FX_WideScrollerAbsDirection db ?
1728	FX_WideScrollerBounceSpeed db ?
1729	FX_CooperBarsTimer dw ?
1730
1731	; [Linux support removed since v1.02]
1732	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
1733	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
1734	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
1735	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
1736	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
1737	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
1738	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
1739	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
1740	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
1741	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
1742	;
1743	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
1744	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
1745	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
1746	;EndOfVariables:
1747
1748	; Dynamically Generated Tables - do not need to get initialized with NUL
1749	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
1750	FX_CooperState: db 7 dup (?)
1751	FX_SinusPos: db 7 dup (?)
1752	FX_CooperPos: dw 7 dup (?)
1753	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
1754	LVM_CRCTable: dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
1755
1756
1757
1758	;
1759	; Rousseau: added some stuff.
1760	;
1761
1762
1763	;EVEN
1764	HugeDisk db MaxDisks dup(?)
1765	TrueSecs dd MaxDisks dup(?)
1766
1767	; BIOS geometry of the boot-drive
1768	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
1769	; If Int13X is supported those values are used, otherwise the legacy values.
1770	BIOS_Cyls dd MaxDisks dup(?)
1771	BIOS_Heads dd MaxDisks dup(?)
1772	BIOS_Secs dd MaxDisks dup(?)
1773	BIOS_Bytes dw MaxDisks dup(?)
1774	BIOS_TotalSecs dq MaxDisks dup(?)
1775
1776	; LBA geometry of the boot-drive
1777	; Note that these values are taken from the BPB of a partition boot-record
1778	LVM_Cyls dd MaxDisks dup(?)
1779	LVM_Heads dd MaxDisks dup(?)
1780	LVM_Secs dd MaxDisks dup(?)
1781	LVM_Bytes dw MaxDisks dup(?)
1782	LVM_TotalSecs dq MaxDisks dup(?)
1783
1784	; OS/2 geometry of the boot-drive
1785	; Note that these values are taken from the BPB of a partition boot-record
1786	LOG_Cyls dd MaxDisks dup(?)
1787	LOG_Heads dd MaxDisks dup(?)
1788	LOG_Secs dd MaxDisks dup(?)
1789	LOG_Bytes dw MaxDisks dup(?)
1790	LOG_TotalSecs dq MaxDisks dup(?)
1791
1792	; Rousseau: moved here
1793	EndOfVariables:
1794
1795	; Temporary buffer for 48h INT13X bios call
1796	; Word aligned
1797	;even
1798	;align 2
1799
1800	;db 1 dup(?)
1801
1802	i13xbuf dw 1 dup (?) ; Size of the buffer;
1803	; this param must be present.
1804	; Code inserts it.
1805	db 126 dup(?) ; The buffer itself.
1806	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
1807	; (excluding the size word at the start).
1808
1809	eobss:
1810
1811
1812	code_seg ends
1813	end air_boot

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