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AIR-BOOT.ASM@ 44

Last change on this file since 44 was 44, checked in by Ben Rietbroek, 12 years ago

Created Bitfield functions (auxdebug on) [2012-02-21]

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 THESE COMMITS!!

New

o Functions to insert/retrieve bitfields

Let's see if we can compress the hideparttable...

File size: 67.1 KB

Line
1	;
2	; AiR-BOOT (c) Copyright 1998-2008 M. Kiewitz
3	;
4	; This file is part of AiR-BOOT
5	;
6	; AiR-BOOT is free software: you can redistribute it and/or modify it under
7	; the terms of the GNU General Public License as published by the Free
8	; Software Foundation, either version 3 of the License, or (at your option)
9	; any later version.
10	;
11	; AiR-BOOT is distributed in the hope that it will be useful, but WITHOUT ANY
12	; WARRANTY: without even the implied warranty of MERCHANTABILITY or FITNESS
13	; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14	; details.
15	;
16	; You should have received a copy of the GNU General Public License along with
17	; AiR-BOOT. If not, see <http://www.gnu.org/licenses/>.
18	;
19
20
21	;------------------------------------------------------------------------------
22	; AiR-BOOT / MAIN-CODE
23	;------------------------------------------------------------------------------
24	;
25
26
27	; -------------------------
28	; Rousseau: JUMPS disabled
29	; -------------------------
30	; We actually don't want to use this directive because it generates extra
31	; NOP instructions that we can do without.
32	; Relative conditional jumps that are out-of-range are manually reworked by
33	; skipping an unconditional jump to the target on base of complementary
34	; condition logic and temporary labels.
35	; TASM also has a bug in that when the .ERR2 directive is used when
36	; the .386 directive is in effect, the JUMPS directive is also active
37	; and cannot be turned off.
38	; NOJUMPS seems to have no effect in this situation.
39	; In this case 4 NOP instructions are generated after forward referencing jump
40	; instructions, to allow for automatic recoding by TASM.
41	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
42	IFDEF TASM
43	;~ JUMPS
44	ENDIF
45
46	;
47	; If defined then each module is prefixed with it's name.
48	; This is used for debugging purposes.
49	; It should be off in release code.
50	;
51	;ModuleNames equ 1
52
53
54	;
55	; The first harddisk is BIOS coded 80h.
56	; This makes a total of 128 disk could be supported using this coding.
57	; This value is used to store disk-information and this info is allocated
58	; in the BSS.
59	;
60	MaxDisks equ 64
61
62	; Only when assembled with JWasm because Tasm generates too large code.
63	IFDEF JWASM
64	; If defined then include DEBUG.ASM and output debug-info to serial-port.
65	AUX_DEBUG EQU
66	ELSE
67	;~ AUX_DEBUG EQU
68	ENDIF
69
70
71	;
72	; bits 7-5 = datarate
73	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
74	; bits 4-3 = parity
75	; (00 or 10 = none, 01 = odd, 11 = even)
76	; bit 2 = stop-bits
77	; (set = 2 stop-bits, clear = 1 stop-bit)
78	; bits 1-0 = data-bits
79	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
80	;
81
82	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
83	AUX_INIT_PARMS EQU 11100011b
84
85	; Com-port for debugging, 0 is disabled
86	BIOS_COM_PORT EQU 1
87
88	; Default word value for BIOS_AuxParms variable
89	; Note that is has moved since v1.07
90	BIOS_AUXPARMS_DEFAULT EQU (AUX_INIT_PARMS SHL 8) OR BIOS_COM_PORT
91
92
93
94
95	;
96	; If ReleaseCode is not defined, it will produce debug-able code...
97	;
98	ReleaseCode equ -1
99
100
101	;
102	; All Special Equ's for this project
103	;
104
105	; Use different addresses depending on whether in pre-boot
106	; or debug (dos) environment.
107	IFDEF ReleaseCode
108	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
109	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
110	ELSE
111	; Rousseau: where does this value come from ?
112	; Should be CS.
113	; Rectified in actual code by ignoring this value.
114	StartBaseSeg equ 03A98h ; Adjust to DOS segment
115	StartBasePtr equ 00100h ; We are a .COM file, DOS is active
116	ENDIF
117
118	; Address labels after code-move
119	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
120	BootBasePtr equ 0h ; We put our MBR to this location
121	BootBaseExec equ BootBasePtr+offset MBR_RealStart
122	StackSeg equ 07000h ; Put the stack below the code
123
124	; Video pages, no INT 10h is used for menu-drawing etc.
125	VideoIO_Page0 equ 0B800h
126	VideoIO_Page1 equ 0B900h
127	VideoIO_Page2 equ 0BA00h
128	VideoIO_Page4 equ 0BC00h
129	VideoIO_FXSegment equ 0A000h
130
131	; Include
132	Include ../INCLUDE/ASM.INC
133
134	; Special line-drawing characters
135	TextChar_WinLineRight equ 0C4h ; 'Ä'
136	TextChar_WinLineDown equ 0B3h ; '³'
137	TextChar_WinRep1 equ 0D1h ; 'Ñ'
138	TextChar_WinRep2 equ 0C5h ; 'Å'
139	TextChar_WinRep3 equ 0CFh ; 'Ï'
140	TextChar_WinRep4 equ 0B5h ; 'µ'
141	TextChar_WinRep5 equ 0C6h ; 'Æ'
142	TextChar_WinRep6 equ 0D8h ; 'Ø'
143
144	; Offsets for Partition-Entries in MBR/EPRs
145	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
146	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
147	LocBRPT_BeginCHS equ 1 ; Combined 10-bits cyl with 6 bits
148	LocBRPT_BeginHead equ 1 ; Start head (0<=H<255) 255 is invalid !
149	LocBRPT_BeginSector equ 2 ; Start sector (1<=S<=255)
150	LocBRPT_BeginCylinder equ 3 ; Start cylinder (0<=C<[1024,16384,65536,n])
151	LocBRPT_SystemID equ 4 ; Type of system using the partition
152	LocBRPT_EndCHS equ 5 ; Same for end of partition
153	LocBRPT_EndHead equ 5
154	LocBRPT_EndSector equ 6
155	LocBRPT_EndCylinder equ 7
156	LocBRPT_RelativeBegin equ 8
157	LocBRPT_AbsoluteLength equ 12
158
159	LocBR_Magic equ 510
160
161
162	; Used as a quick compare in LVM.ASM
163	LocLVM_SignatureByte0 equ 02h
164
165	; Offsets for LVM Information Sector.
166	; These are relative to the start of the LVM sector.
167	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
168	LocLVM_CRC equ 08h ; CRC is a DWORD
169	LocLVM_Heads equ 1ch ; Number of heads
170	LocLVM_Secs equ 20h ; Sectors per Track
171	LocLVM_DiskName equ 24h ; Name of the disk
172	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
173	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
174
175	; An LVM info-sector can contain information on max. 4 partitions.
176	; All 4 entries will be used when there 4 primary partitions defined.
177	; For logical partitions, the LVM info-sector is located below the start
178	; of the logical partition and only one LVM entry is used in that logical
179	; LVM info-sector.
180	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
181
182	; Offsets for LVM entry.
183	; These are relative to the start of the entry.
184	LocLVM_VolumeID equ 00h ; is DWORD
185	LocLVM_PartitionID equ 04h ; is DWORD
186	LocLVM_PartitionSize equ 08h ; is DWORD
187	LocLVM_PartitionStart equ 0ch ; is DWORD
188	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
189	LocLVM_Startable equ 11h ; is Startable (newly installed system)
190	LocLVM_VolumeLetter equ 12h ; is Drive Letter for partition (C-Z or 0)
191	LocLVM_Unknown equ 13h ; unknown BYTE
192
193	; Truncated to 11 chars when displayed in menu.
194	; MiniLVM sets both to the same value.
195	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
196	; Same goes for LocLVM_DiskName.
197	LocLVM_VolumeName equ 14h ; 20 bytes
198	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
199
200
201
202	; Offsets for IPT (Internal Partition Table)
203	LocIPT_MaxPartitions equ partition_count ; 45 in v1.07
204	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
205	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
206	LocIPT_Serial equ 0 ; Serial from MBR ?
207	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
208	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
209	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
210	LocIPT_Flags equ 17 ; AiR-BOOT Flags for partition (see below)
211	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
212	LocIPT_LocationBegin equ 20 ; Begin of Partition
213	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
214	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
215	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
216
217	; Hidden Partition Table
218	LocHPT_LenOfHPT equ 30 ; Length of an HPT-entry
219
220	; AiR-BOOT IPT-Flags
221	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
222	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
223
224	Flags_Bootable equ 00000001b
225	Flags_VIBR_Detection equ 00000010b
226	Flags_HideFeature equ 00000100b
227	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
228	Flags_ExtPartMShack equ 00010000b ; Extended Partition M$-Hack req ?
229	Flags_NoPartName equ 01000000b
230	Flags_NowFound equ 10000000b ; temp only in OldPartTable
231	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
232
233	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
234	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
235	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
236	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
237
238	; Navigation keys
239	Keys_Up equ 48h
240	Keys_Down equ 50h
241	Keys_Left equ 4Bh
242	Keys_Right equ 4Dh
243	Keys_PageUp equ 49h
244	Keys_PageDown equ 51h
245	Keys_GrayPlus equ 4Eh
246	Keys_GrayMinus equ 4Ah
247	Keys_Plus equ 1Bh
248	Keys_Minus equ 35h
249	Keys_ENTER equ 1Ch
250	Keys_ESC equ 1h
251	Keys_F1 equ 3Bh
252	Keys_F10 equ 44h
253	Keys_C equ 2Eh ; Add. Check auf Ctrl!
254	Keys_Y equ 2Ch
255	Keys_Z equ 15h
256	Keys_N equ 31h
257	Keys_TAB equ 0Fh
258	Keys_Delete equ 53h
259	Keys_Backspace equ 0Eh
260	Keys_Space equ 20h
261
262	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
263
264
265	; ------------------------------------------
266	; Rousseau: # Changed this from .386 to .286
267	; ------------------------------------------
268	; Because of the TASM-bug the processor had to be changed to turn JUMPS
269	; off. Existing movzx instructions were replaced with 286 equivalent code.
270	; Out of range relative jumps have been recoded.
271	; TASM still generates an extra NOP after test [mem],1
272	; instructions.
273	; JWasm produces tighter code.
274	; JWasm:
275	; With segment overrides, the address is expanded to the bit-width.
276	; So, .386 will generate a 32-bit address, even in a USE16 segment.
277	.286
278
279	; This influences the uses directive and other stuff,
280	; like calling-style and local variables.
281	; The model itself,large, has no effect because we generate
282	; a binairy image and not a segmented executable.
283
284	; Tasm needs a memory model for USES on PROC to work.
285	IFDEF TASM
286	;.model large, basic
287	.model tiny,c
288	ENDIF
289
290	;
291	; This is used to switch between the original 1-segment (code_seg) and the
292	; 2-segment (code_seg and bss_data).
293	; The 2-segment layout was needed for JWasm because it does not treat
294	; db ? in a code segment as bss-data, even if at the end of the code segment.
295	; Therefore, a true BSS segment is now used.
296	; Both the code_seg and the bss_data are grouped to the logical airboot
297	; segment.
298	; Note that this influences the offsets in the BSS in the list-file and
299	; the wdis disassembly file (.WDA).
300	; They are now segment-relative. The true offset is resolved at link
301	; time.
302	;
303	SEGMENTED EQU
304
305	IFDEF SEGMENTED
306	AIRBOOT GROUP LDRIMAGE,VOLATILE
307	ENDIF
308
309	; Our code-segment starts here.
310	LDRIMAGE SEGMENT USE16 PUBLIC 'MIXED'
311
312	IFDEF SEGMENTED
313	ASSUME CS:AIRBOOT, DS:AIRBOOT, ES:nothing, SS:nothing
314	ELSE
315	ASSUME CS:LDRIMAGE,DS:LDRIMAGE,ES:nothing, SS:nothing
316	ENDIF
317
318	;==============================================================================
319	; Sector 1
320
321
322	; We are not a .com file at 100h but a binary image
323	; of which only the 1st sector gets loaded at 07c00h.
324	org 00000h ; Sector 1
325
326	; Start of sector 1
327	; This is the MBR, note the AiRBOOT signature, it's date (2006), version and
328	; language.
329	; Version 1.07 was intruduced in 2011.
330	; It fixes issues with huge drives and lvm and more.
331
332	sos1:
333
334	; ---------------------------------------------
335	; Rousseau: # Combined letter and jump offset #
336	; ---------------------------------------------
337	; My guess is Martin had a short jump followed by the AiRBOOT signature at first.
338	; Then he encountered strange behaviour by some M$ operating-systems if the
339	; the first insruction was not a CLI.
340	; But there was no room to insert the CLI and of course he did not want to
341	; change the location of the AiRBOOT signature.
342	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
343	; jump that uses the 'A' of the AiRBOOT signature as the jump displacement.
344
345
346	;------------------------------------------------------------------------------
347	AiR_BOOT:
348
349	; Some M$ operating systems need a CLI
350	; here otherwise they will go beserk
351	; and will do funny things during
352	; boot phase, it's laughable!
353	cli
354
355	; JMP-Short -> MBR_Start
356	; Uses the 'A' from the signature as the displacement !
357	db 0EBh
358
359	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
360	db 'AiRBOOT', 21h, 02h, 20h, 12h, 01h, 08h, TXT_LanguageID
361
362	; Total Sectors Count.
363	; Will get overwritten by FIXCODE.
364	db 1
365
366	; Total Sectors Count,
367	; Dynamic calculation.
368	;~ db (CODE_END-$)/512
369
370
371	MBR_CheckCode dw 0 ; Check-Sum for Code
372
373	;
374	; No single instruction below should be changed, added or removed in the code
375	; below as this will cause the jump-link to go haywire.
376	;
377	MBR_Start:
378	sti ; This opcode is dedicated to:
379	cld ; =MICROSOFT JUMP DEPARTMENT=
380
381	; Setup some base stuff
382	; AX got loaded wrongly for debug, changed the instructions
383	; without modifying the number of bytes.
384	; Don't comment-out the redundant instruction below because this
385	; will change the number of bytes and break the jump-chain.
386	mov ax, StartBaseSeg ; The segment we are moving ourself from (NOT USED)
387	;mov ds, ax
388	push cs
389	pop ds
390	mov si, StartBasePtr ; The offset we are moving ourself from
391	mov ax, BootBaseSeg ; The target segment we are moving ourself to
392	mov es, ax
393	mov di, BootBasePtr ; The target offset we are moving ourself to
394
395	; Depending on pre-boot or debug,
396	; only move first 512 bytes or the whole she-bang++ (65400 bytes)
397	IFDEF ReleaseCode
398	mov cx, 256 ; Pre-boot environment
399	ELSE
400	mov cx, 32700 ; Debug environment (move ~64kB)
401	ENDIF
402
403	;
404	; LET's MOVE OURSELVES !
405	;
406	rep movsw
407
408	; Code an intersegment jump to the new location
409	db 0EAh
410	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
411	dw BootBaseSeg ; This is 08000h
412	;jmp far ptr BootBaseSeg:BootBaseExec
413
414
415	;
416	; Some MBR-functions to provide absolute minimum functionality.
417	;
418
419	;
420	; Entry-point for halting the system.
421	;
422	MBR_HaltSystem:
423	mov ax, 8600h
424	xor cx, cx
425	mov dx, 500
426	int 15h ; Wait to display the whole screen :]
427	MBR_HaltSys: cli
428	jmp MBR_HaltSys
429
430
431	; Comport settings
432	; It had to be moved to create room for the double I13X
433	; signature.
434	; It cannot be in the config-area (sector 55)
435	; because that area is crc-protected and would not allow 'poking'.
436	here = $
437	org 0003Ch
438	check_overlap here
439	BIOS_AuxParms dw BIOS_AUXPARMS_DEFAULT
440
441	reserved db 6 dup('X')
442
443	;
444	; We arrive here after the first jump using the 'A' of the
445	; AiR-BOOT signature.
446	; So we ensure the jump is always at this offset.
447	; We jump here, because Martin needed to
448	; insert a CLI on start and did not
449	; want to change the AiR-BOOT signature
450	; because of Microsoft inventions...
451	here = $
452	org 044h
453	check_overlap here
454
455
456
457	; Jump again...
458	; This time to the setup-code.
459	jmp MBR_Start
460
461	;
462	; Entry-point when loading fails.
463	;
464	db 'LOAD ERROR!', 0
465	MBR_LoadError Proc Near
466	mov si, offset $-12
467	push cs
468	pop ds
469	call MBR_Teletype
470	MBRLE_Halt:
471	jmp MBRLE_Halt
472	MBR_LoadError EndP
473
474
475	;
476	; Entry-point when saving fails.
477	;
478	db 'SAVE ERROR!', 0
479	MBR_SaveError Proc Near
480	mov si, offset $-12
481	push cs
482	pop ds
483	call MBR_Teletype
484	MBRSE_Halt:
485	jmp MBRSE_Halt
486	MBR_SaveError EndP
487
488
489	; Put text on the screen using the BIOS tele-type function.
490	; No attributes like color are supported.
491	; In: SI - Pointer to begin of string (EOS is 0)
492	; Destroyed: SI
493	MBR_Teletype Proc Near Uses ax bx cx
494	mov ah, 0Eh
495	mov bx, 7
496	MBRT_Loop:
497	lodsb
498	or al, al
499	jz MBRT_End
500	int 10h
501	jmp MBRT_Loop
502	MBRT_End:
503	ret
504	MBR_Teletype EndP
505
506	;
507	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
508	;
509
510	; In: BX - Base Check, DS:SI - Pointer to 512-byte-area to be included
511	; Out: BX - Base Check Result
512	; Destroyed: SI will get updated (+512)
513	MBR_GetCheckOfSector Proc Near Uses ax cx
514	mov cx, 256
515	MBRGCOS_Loop:
516	lodsw
517	xor ax, 0BABEh
518	xor bx, ax
519	loop MBRGCOS_Loop
520	or bx, bx
521	jnz MBRGCOS_NoFixUp
522	mov bx, 1 ; dont allow 0, cause 0 == empty
523	MBRGCOS_NoFixUp:
524	ret
525	MBR_GetCheckOfSector EndP
526
527
528
529
530
531
532	;
533	; This is where the rest of AiR-BOOT gets loaded.
534	;
535
536	;------------------------------------------------------------------------------
537	MBR_RealStart:
538	mov ax, StackSeg ; 07000h, below the moved code
539	mov ss, ax
540	;mov sp, 7FFFh ; Odd stack-pointer ??
541	mov sp, 7FFEh ; Even is better
542	mov ax, es ; ES holds segment where we moved to
543	mov ds, ax ; Set DS==ES to Code Segment
544
545
546	; If we are in debug-mode, all code is moved already,
547	; so we can directly jump to it.
548	; One difference is that in debug-mode, the whole .com image is
549	; loaded by dos while when air-boot is active from the MBR it
550	; does the loading itself.
551	IFNDEF ReleaseCode
552	jmp AiR_BOOT_Start
553	ENDIF
554
555
556	; Load missing parts from harddrive...
557	;mov ax, cs ; actually obsolete
558	;mov es, ax ; actually obsolete
559
560	; Load the configuration-sectors from disk.
561	mov bx, offset Configuration
562	mov dx, 0080h ; First harddrive, Sector 55
563	mov cx, 0037h ; Is 55d is config-sector
564
565	; Call the i/o-part
566	call MBR_LoadConfig
567
568	jnc MBR_ConfigCopy_NoError
569
570	; Some error occured
571	MBR_ConfigCopy_LoadError:
572	call MBR_LoadError ; Will Abort BootUp
573
574	; Load the code sectors
575	MBR_ConfigCopy_NoError:
576	mov bx, offset FurtherMoreLoad
577	mov dx, 0080h ; First harddrive
578	mov cx, 0002h ; Second sector
579	mov ah, 02h
580
581	; This location is in the code-segment.
582	; When segment overrides are applied, the address is
583	; expanded to the bit-with.
584	; So the .286 or .386 directive influences the length
585	; of the instruction, even with a USE16 segment.
586	mov al, ds:[10h] ; Number of code sectors
587	int 13h
588	jnc MBR_RealStart_NoError
589	jmp MBR_ConfigCopy_LoadError
590
591
592
593	; [v1.05+]
594	; Signature for IBM's LVM to detect our "powerful" features ;)
595	; [v1.0.8+]
596	; Reworked MBR code to be able to create a
597	; double 'I13X' signature.
598	; MBR's created with LVM eCS v1.x have the signature at 0d5h
599	; MBR's created with LVM eCS v2.x have the signature at 0d0h
600	; See eCS bugtracker issue #3002
601	; Update: These are actually MOV EAX,'X31I' instructions
602	; in the eCS LVM MBR-code. They are at different places in
603	; the v1.x and v2.x LVM code.
604	; Let's protect them with an org directive.
605
606	here = $
607	org 00d0h
608	check_overlap here
609	;org 00d0h
610	db 'I13X',0,'I13X',0
611
612
613	MBR_RealStart_NoError:
614	; Now Check Code with CheckSum
615	mov si, offset FurtherMoreLoad
616
617	;movzx cx, bptr ds:[10h]
618	mov cl, ds:[10h]
619	mov ch,0
620
621	xor bx, bx
622	MBR_RealStart_CheckCodeLoop:
623	call MBR_GetCheckOfSector
624	loop MBR_RealStart_CheckCodeLoop
625
626
627	cmp MBR_CheckCode, bx
628	je MBR_RealStart_CheckSuccess
629
630	mov si, offset TXT_ERROR_Attention
631	call MBR_Teletype
632	mov si, offset TXT_ERROR_CheckCode
633	call MBR_Teletype
634	mov si, offset TXT_ERROR_CheckFailed
635	call MBR_Teletype
636	jmp MBR_HaltSystem
637	MBR_RealStart_CheckSuccess:
638	jmp AiR_BOOT_Start
639
640
641
642
643
644	;------------------------------------------------------------------------------
645	Include TEXT/TXTMBR.ASM ; All translateable Text in MBR
646	;------------------------------------------------------------------------------
647
648
649
650	; This is an ugly kludge function to create space for the
651	; double 'I13X' signature.
652	; It loads the configuration sectors, but bx,cx and dx are not initialized
653	; in this function. That's done around line 500.
654	; Putting this few bytes here creates just enough room.
655	MBR_LoadConfig Proc Near
656	; Changed from conditional assembler to calculated value
657	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
658	; Size of the ab-configuration in 512 byte sectors
659	mov al, (MBR_BackUpMBR - Configuration) / 200h
660	mov ah,02h
661	int 13h
662	ret
663	MBR_LoadConfig EndP
664
665
666	here = $
667	org 001b8h
668	check_overlap here
669
670	; Disk Signature
671	; Note that in an LVM 2.x MBR this collides
672	; with the dummy PTE that it uses to look for IBM-BM
673	; on the second harddisk.
674	db 'DSIG'
675
676	; Unused word at 01BCh
677	; An LVM 2.x MBR puts 'CC33' here.
678	dw '$$'
679
680
681	here = $
682	org 001beh
683	check_overlap here
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	; End of sector 1
695	eos1a:
696
697
698
699
700	;==============================================================================
701	; Sector 2
702
703	;
704	; Here starts the second sector, sector 2
705	;
706	org 00200h
707	; Start of sector 2.
708	sos2:
709
710	;
711	; Everything beyond this point is loaded on startup
712	; and is NOT existant at first
713	;
714	FurtherMoreLoad:
715
716	;
717	; Filesystem table correlating id with name.
718	;
719
720	; first Normal-Partition-ID, Hidden-Partition-ID
721	; and Default-Partition-Flags.
722	; 01h -> Boot-Able
723	; 10h -> FAT32 - Name Getting Scheme
724	; 20h -> No Name To Get (use Partition Name from IPT)
725	; 40h -> 'L' flag possible
726	db 'AiRSYS-TABLE'
727	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
728	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
729	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
730	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
731	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
732	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
733	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
734	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
735	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
736	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
737	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
738	db 16 dup (0)
739
740	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
741	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
742	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
743	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
744	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
745	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
746	db ' ', ' ', ' ', ' '
747	db ' ', ' ', ' ', ' '
748	db ' ', ' ', ' ', ' '
749	db ' ', 'Kernel ', ' ', '0V-Award'
750	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
751	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
752	; -> 44 Partition-Types
753
754	; End of sector 2.
755	eos2:
756
757
758
759
760
761
762
763
764	;==============================================================================
765	; Sector 3
766	here = $
767	org 00400h
768	check_overlap here
769
770
771	; Start of sector 3.
772	sos3:
773
774
775	; ##############################################
776	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
777	; ##############################################
778
779
780
781
782	AiR_BOOT_Start:
783
784
785
786	;
787	; Since v1.0.8, AiR-BOOT is able to chainload IBM-BM.
788	; When IBM-BM resides above the 1024-cylinder limit, the 'I13X'
789	; signature is required at 3000:0000, FS needs to contain 3000h
790	; and the 32-bit LBA address needs to follow the 'I13X' signature.
791	; For booting IBM-BM from the second disk, a copy of the MBR of the
792	; first disk is also required at 0000:7E00.
793	; This information is derived from the eCS 2.x LVM MBR.
794	;
795	; So, now is a good time to copy the MBR of the first disk to
796	; 0000:7E00 in case the partition that will be started is IBM-BM.
797	; This copy is located at 8000:0000 and DS already points to this
798	; segment.
799	;
800	pusha ; Save all the general purpose regs
801	push es ; We need ES too, so save its value
802	xor ax,ax ; Segment 0000h
803	mov es,ax ; Make ES point to it
804	mov si,offset BootBasePtr ; Start of AiR-BOOT which has the MBR
805	mov di,7e00h ; Destination for the MBR for IBM-BM
806	mov cx,100h ; 256 words = 512 bytes
807	cld ; Direction from low to high
808	rep movsw ; Copy the 256 words of the MBR
809	pop es ; Restore previous value of ES
810	popa ; Restore all the general purpose regs
811
812
813	mov ax, offset sobss
814	mov ax,offset BeginOfVariables
815	mov ax,offset [TrueSecs]
816	lea ax, [TrueSecs]
817	mov ax,word ptr [TrueSecs]
818	mov ax,offset EndOfVariables
819	mov ax, offset eobss
820	nop
821	;~ mov ax, offset qqqq
822
823
824	;jmp skip
825
826	; Rousseau:
827	; I should cleanup my garbage here...
828
829	; Initialize Variable-Tables, Detections, etc.
830	call PRECRAP_Main
831
832	; Number of harddisks is now known
833
834	call PARTSCAN_ScanForPartitions
835
836
837	; Number of disks found
838	mov si, offset DisksFound
839	call MBR_Teletype
840
841	mov al, [TotalHarddiscs]
842	call VideoIO_SyncPos
843	call VideoIO_PrintByteDynamicNumber
844	xor si,si
845	call MBR_TeletypeNL
846
847	; Number of bootable systems indicator
848	mov si, offset PartitionsFound
849	call MBR_Teletype
850
851	mov al, [CFG_Partitions]
852	call VideoIO_SyncPos
853	call VideoIO_PrintByteDynamicNumber
854
855	xor si,si
856	call MBR_TeletypeNL
857	call MBR_TeletypeNL
858
859	call VideoIO_SyncPos
860
861	mov dl,80h
862	call VideoIO_DumpDiskInfo
863
864	;
865	; Enumberate Bootable Systems by name
866	; and prepare Phase 1 if active.
867	;
868	; This can also be implemented using the
869	; Installable LVM-flag I think.
870	; But at the time I had lesser knowledge about LVM...
871	; So this algorithm may change in the future.
872	;
873	mov si, offset PartitionTable
874	xor cx,cx
875	mov cl,[CFG_Partitions]
876	MBR_Parts:
877	add si, 4
878	push si
879	push si
880	;call MBR_TeletypeVolName
881	pop si
882	call PART_IsInstallVolume
883	jnc MBR_Parts_NI
884
885	; Install Volume
886	mov al,' '
887	mov bl,7
888	mov ah, 0eh
889	int 10h
890
891	mov al,'('
892	mov bl,7
893	mov ah, 0eh
894	int 10h
895
896	mov al,[CFG_Partitions]
897	sub al,cl
898	;inc al
899	;mov [Menu_EntryAutomatic],al
900	mov [CFG_PartAutomatic],al ; Setup entry for install-volume
901	mov [CFG_PartLast],al
902	mov ah, [eCS_InstallVolume] ; 1st byte is 0 if no phase 1 active
903	test ah,ah ; test the byte, ZF is 0 if phase 1 active
904	lahf ; flags in ah
905	xor ah, 40h ; complement ZF
906	and ah, 40h ; mask ZF
907	shr ah, 6 ; move ZF to LSB
908	mov [CFG_AutomaticBoot], ah ; automatic boot if phase 1 is active
909
910
911	add al,'1'
912	mov bl,7
913	mov ah, 0eh
914	int 10h
915
916	mov al,')'
917	mov bl,7
918	mov ah, 0eh
919	int 10h
920
921	mov bx,cx
922
923	MBR_Parts_NI:
924	xor si,si
925	;call MBR_TeletypeNL
926	pop si
927	add si, 30 ; Add remainder of IPT entry
928	loop MBR_Parts
929
930
931
932
933	; Index of automatic start partition
934	;mov si, offset AutoStartPart
935	;call MBR_Teletype
936
937	;mov al, [CFG_PartAutomatic]
938	;add al, 31h
939	;mov ah, 09h
940	;mov bx, 15
941	;mov cx, 1
942	;int 10h
943
944	;mov al, [CFG_PartAutomatic]
945	;add al, 31h
946	;mov ah, 0eh
947	;mov bx, 15
948	;mov cx, 1
949	;int 10h
950
951	xor si,si
952	call MBR_TeletypeNL
953	xor si,si
954	call MBR_TeletypeNL
955
956	;mov ax,[BIOS_AuxParms]
957	;call VideoIO_SyncPos
958	;push ax
959	;add al,'0'
960	;mov bl,7
961	;mov ah, 0eh
962	;int 10h
963	;pop ax
964	;xchg al,ah
965	;sub al,0a2h
966	;mov bl,7
967	;mov ah, 0eh
968	;int 10h
969
970
971	call MBR_TeletypeSyncPos
972
973	xor si,si
974	call MBR_TeletypeNL
975	call MBR_TeletypeNL
976
977
978
979	mov si, offset ShowMenu
980	call MBR_TeletypeBold
981
982
983	skip:
984
985
986
987	;
988	; ####################### WAIT FOR KEY ########################
989	;
990
991
992	; Rousseau:
993	; Wait for key so we can see debug log if ab-menu hangs.
994	;;xor ax, ax
995	;;int 16h
996
997	;call SOUND_Beep
998
999	; Rousseau: delayed save of video-page
1000
1001	mov ax, VideoIO_Page1
1002	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
1003
1004	;call SOUND_Beep
1005
1006
1007	;
1008	; COM-PORT DEBUG
1009	;
1010	;call AuxIO_TeletypeNL
1011	mov si, offset PartitionTable
1012	;call AuxIO_DumpSector
1013	;call AuxIO_TeletypeNL
1014
1015
1016	; Save configuration so phase1 boot-through is disabled
1017	; on next boot.
1018	; Moved here to fix that Esc out of SETUP would also save.
1019	; So moved above the MBR_Main_ReEnterSetup label.
1020	mov [eCS_InstallVolume], 0 ; disable phase 1 for next boot
1021	call DriveIO_SaveConfiguration
1022
1023
1024
1025	;
1026	; RE-ENTER SETUP
1027	;
1028	MBR_Main_ReEnterSetup:
1029	call SETUP_CheckEnterSETUP
1030
1031	;call SOUND_Beep
1032
1033	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
1034	call AFTERCRAP_Main
1035
1036	; [Linux support removed since v1.02]
1037	; Now get FAT16-Linux Kernel Partition, If requested
1038	;cmp [CFG_LinuxKrnlPartition], 0FFh
1039	;je MBR_Main_NoLinuxKrnlPartition
1040	;call LINUX_InitFAT16access
1041	;MBR_Main_NoLinuxKrnlPartition:
1042
1043
1044	MBR_Main_ReEnterBootMenuPre:
1045
1046	; SetUp PartitionPointers for BootMenu (filter non-bootable)
1047	call PART_CalculateMenuPartPointers
1048
1049	; ...and count that one...
1050	cmp PartitionPointerCount, 0
1051	jne MBR_Main_SomethingBootAble
1052	mov si, offset TXT_NoBootAble
1053	call MBR_Teletype
1054	jmp MBR_HaltSystem
1055
1056	MBR_Main_SomethingBootAble:
1057	; FixUp Values, define Timed Setup booting, etc.
1058	call PART_FixUpDefaultPartitionValues
1059
1060
1061
1062	; -------------------------------------------------- BOOT-MENU
1063	MBR_Main_ReEnterBootMenu:
1064	call BOOTMENU_ResetMenuVars ; reset has to be done
1065	test CFG_AutomaticBoot, 1
1066	jz MBR_Main_NoAutomaticBooting
1067	; ------------------------------------------ AUTOMATIC BOOTING
1068	; Select automatic partition, disable automatic booting for
1069	; next time and boot system...
1070	mov CFG_AutomaticBoot, 0
1071	call PASSWORD_AskSystemPwd
1072	mov al, Menu_EntryAutomatic
1073
1074	;mov al, 2
1075
1076	mov Menu_EntrySelected, al ; zero based
1077	jmp MBR_Main_NoBootMenu
1078
1079	MBR_Main_NoAutomaticBooting:
1080
1081	;call SOUND_Beep
1082
1083	test CFG_BootMenuActive, 0FFh
1084	jnz MBR_Main_GotBootMenu
1085	; ----------------------------------------------- NO BOOT-MENU
1086	; Select default partition and boot system...
1087	call PASSWORD_AskSystemPwd
1088
1089	;call VideoIO_DBG_WriteString2
1090
1091	mov al, Menu_EntryDefault
1092	;mov al,0 ; zero based
1093	mov Menu_EntrySelected, al
1094	jmp MBR_Main_NoBootMenu
1095
1096	MBR_Main_GotBootMenu:
1097	; ------------------------------------------ BOOT-MENU VISUALS
1098	call FX_StartScreen
1099
1100	;call SOUND_Beep
1101
1102	call BOOTMENU_BuildBackground
1103	call BOOTMENU_BuildMain
1104	call FX_EndScreenRight
1105	call PASSWORD_AskSystemPwd
1106	call BOOTMENU_ResetTimedBoot
1107
1108	;call SOUND_Beep
1109
1110	call BOOTMENU_Execute
1111
1112	;call SOUND_Beep
1113
1114	jc MBR_Main_ReEnterSetup
1115	call BOOTMENU_SetVarsAfterMenu
1116
1117	;call SOUND_Beep
1118
1119	; ---------------------------------------------------- BOOTING
1120	MBR_Main_NoBootMenu:
1121	call FX_StartScreen
1122	call BOOTMENU_BuildGoodBye
1123	call FX_EndScreenRight
1124	call PASSWORD_AskChangeBootPwd
1125
1126	IFNDEF ReleaseCode
1127	; Debug Code to terminate DOS .COM program - used for
1128	; testing AiR-BOOT
1129	int 3
1130	mov ax, 6200h
1131	int 21h
1132	mov es, bx
1133	mov ax, 4C00h ; Quit program
1134	int 21h
1135	ENDIF
1136	call ANTIVIR_SaveBackUpMBR
1137	mov dl, Menu_EntrySelected
1138
1139	; -------------------------------------------- START PARTITION
1140	call PART_StartPartition
1141
1142
1143
1144	;
1145	; Include other code-modules here.
1146	; Because TASM is a multiple pass assembler, forward references
1147	; are possible.
1148	;
1149	b_std_txt:
1150	Include REGULAR/STD_TEXT.ASM ; Standard (non-translateable text)
1151	size_std_txt = $-b_std_txt
1152
1153	b_driveio:
1154	Include REGULAR/DRIVEIO.ASM ; Drive I/O, Config Load/Save
1155	size_driveio = $-b_driveio
1156
1157	b_lvm:
1158	Include SPECIAL/LVM.ASM ; LVM-specific code
1159	size_lvm = $-b_lvm
1160
1161	b_videoio:
1162	Include REGULAR/VIDEOIO.ASM ; Video I/O
1163	size_videoio = $-b_videoio
1164
1165	b_timer:
1166	Include REGULAR/TIMER.ASM ; Timer
1167	size_timer = $-b_timer
1168
1169	b_partmain:
1170	Include REGULAR/PARTMAIN.ASM ; Regular Partition Routines
1171	size_partmain = $-b_partmain
1172
1173	b_partscan:
1174	Include REGULAR/PARTSCAN.ASM ; Partition Scanning
1175	size_partscan = $-b_partscan
1176
1177	b_bootmenu:
1178	Include REGULAR/BOOTMENU.ASM ; Boot-Menu
1179	size_bootmenu = $-b_bootmenu
1180
1181	b_password:
1182	Include REGULAR/PASSWORD.ASM ; Password related
1183	size_password = $-b_password
1184
1185	b_other:
1186	Include REGULAR/OTHER.ASM ; Other Routines
1187	size_other = $-b_other
1188
1189	b_main:
1190	Include SETUP/MAIN.ASM ; The whole AiR-BOOT SETUP
1191	size_main = $-b_main
1192
1193
1194
1195	IFDEF TXT_IncludeCyrillic
1196	b_ccharset:
1197	Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
1198	size_ccharset = $-b_ccharset
1199	ENDIF
1200
1201
1202	b_math:
1203	Include REGULAR/MATH.ASM ; Math functions (like 32-bit multiply)
1204	size_math = $-b_math
1205
1206
1207
1208
1209	; Various debugging routines, uses AUXIO and CONV
1210	IFDEF AUX_DEBUG
1211	b_debug:
1212	Include REGULAR/DEBUG.ASM
1213	size_debug = $-b_debug
1214	b_auxio:
1215	Include REGULAR/AUXIO.ASM ; Com-port support for debugging
1216	size_auxio = $-b_auxio
1217	ENDIF
1218
1219
1220	; End of sector 3.
1221	eos3:
1222
1223
1224
1225
1226
1227	;==============================================================================
1228
1229	;
1230	; This is the AiR-BOOT MBR-Protection Image.
1231	; 04600 / 200h = 23h = 35d sectors are before this point.
1232	; The stuff generated here gets overwritten when the MBR_PROT.ASM
1233	; module, which is assembled separately, gets merged.
1234	; So you won't find the string below in the generated binary.
1235	;
1236	; MOVED TO 6800h to create space and have a continuous
1237	; code block.
1238	; This makes the RU version buildable again with Tasm.
1239	;
1240	;org 04600h ; Sector 36-37
1241
1242	; Start of sector 36.
1243	sos36:
1244
1245
1246
1247	; End of sector 37, yes this section is 2 sectors long.
1248	eos37:
1249
1250
1251
1252
1253
1254
1255
1256
1257	;==============================================================================
1258	; Sector 38-x
1259	;
1260	; This section contains translatable texts.
1261	;
1262	;org 04A00h
1263
1264	; Start of sector 28.
1265	sos38:
1266
1267	b_txtother:
1268	Include TEXT/TXTOTHER.ASM ; All translateable Text-Strings
1269	size_txtother = $-b_txtother
1270
1271	b_txtmenus:
1272	Include TEXT/TXTMENUS.ASM ; All translateable Menu-text
1273	size_txtmenus = $-b_txtmenus
1274
1275	b_charset:
1276	Include TEXT/CHARSET.ASM ; Special Video Charsets (if needed)
1277	size_charset = $-b_charset
1278
1279	b_conv:
1280	Include REGULAR/CONV.ASM ; Various conversion routines
1281	size_conv = $-b_conv
1282
1283	b_virus:
1284	Include SPECIAL/VIRUS.ASM ; Virus Detection / Anti-Virus
1285	size_virus = $-b_virus
1286	; [Linux support removed since v1.02]
1287	;Include SPECIAL/FAT16.ASM ; FAT-16 Support
1288	;Include SPECIAL/LINUX.ASM ; Linux Kernel Support
1289	b_billsuxx:
1290	Include SPECIAL/F00K/BILLSUXX.ASM ; Extended Partition - Microsoft-Hack
1291	size_billsuxx = $-b_billsuxx
1292
1293	b_sound:
1294	Include SPECIAL/SOUND.ASM ; Sound
1295	size_sound = $-b_sound
1296
1297	b_apm:
1298	Include SPECIAL/APM.ASM ; Power Managment Support
1299	size_apm = $-b_apm
1300
1301	b_fx:
1302	Include SPECIAL/FX.ASM ; l33t Cooper-Bars/Scrolling <bg>
1303	size_fx = $-b_fx
1304
1305
1306	;
1307	; Let's make this always the last module in this section.
1308	;
1309	Include BLDDATE.ASM ; Build Date generated by _build.cmd
1310
1311	; End of sector x depending on size of translatable texts.
1312	eosx:
1313
1314
1315	;
1316	; End of code marker.
1317	;
1318	db 'BABE'
1319	db 'FACE'
1320
1321	code_end:
1322
1323
1324
1325	here = $
1326	org 06800h
1327	; For some reason, this overlap check does not work !!
1328	; I gues it's because 'here' has no definitive value yet
1329	; and since JWasm is a single pass assembler, it won't
1330	; change anymore. it is off by 1dh bytes.
1331	; (Changing the ORG to 6700h produces an overlap of 11dh.
1332	; This 1dh is by sheer coincidence the same length as the
1333	; MBR_Prot signature on my system, but it's not related.
1334	check_overlap here
1335
1336	;
1337	; This is the AiR-BOOT MBR-Protection Image.
1338	; 06800 / 200h = 34h = 52d sectors are before this point.
1339	; The stuff generated here gets overwritten when the MBR_PROT.ASM
1340	; module, which is assembled separately, gets merged.
1341	; So you won't find the string below in the generated binary.
1342	;
1343	; Hardcoded to 1k (1024 bytes) (MBR_PROT.ASM)
1344	MBR_Protection db 'AiR-BOOT MBR-Protection Image'
1345
1346	; Just fill.
1347	db 1024-($-MBR_Protection) dup('M')
1348
1349	;LDRIMAGE ENDS
1350	;DATA_SEG SEGMENT USE16 PUBLIC 'CODE'
1351
1352
1353
1354	;~ MYDATA SEGMENT COMMON 'MIXED'
1355	;~ qqqq dw 'QQ'
1356	;~ MYDATA ENDS
1357
1358	;==============================================================================
1359	; Sector 55
1360
1361	;
1362	; This section contains the AiR-BOOT configuration.
1363	; Note that it has a version that should be updated
1364	; when stuff is added.
1365	; Also add stuff to the end so that offsets of other
1366	; variables remain vaild.
1367	;
1368	here = $
1369	org 06C00h
1370	check_overlap here
1371	sos55:
1372
1373
1374
1375	Configuration:
1376	; THERE IS AN INVISIBLE CHAR HERE !!
1377	; Your editor may not display the invisible
1378	; character at the end if the 'AiRCFG-TABLE'
1379	; string. When this character get's deleted,
1380	; AiR-BOOT will not function because it cannot
1381	; find the config-signature which includes this
1382	; invisible character. The code is: 0x0ad.
1383	db 'AiRCFG-TABLE'
1384	db 01h, 07h, 'U' ; "Compressed" ID String
1385	; This is now version 1.07 to have it in sync with
1386	; the new code version for eCS.
1387	; Version 1.02 was for code 1.06, 1.03 was internal
1388	; and 1.04,1.05 and 1.06 do not exist.
1389	; It is not required for the config to have the
1390	; same version as the code, so in the future
1391	; the code version might be higher than the
1392	; config version if there are no changes to the latter.
1393
1394	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
1395	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
1396
1397	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
1398
1399	CFG_Partitions db 0 ; Count of partitions in IPT
1400	db 0 ; Was BootParts - Removed since v0.28b
1401	CFG_PartDefault db 0 ; Default-Partition (Base=0)
1402
1403	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
1404	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
1405	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
1406	CFG_TimedDelay dw 123 ; Timed Boot - Delay
1407	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
1408	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
1409	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
1410	CFG_IncludeFloppy db 1 ; Include Floppy Drives in Boot-Menu
1411	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
1412	; v0.29+ -> 2 - Detailed Bootmenu
1413	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
1414	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
1415	CFG_PasswordSystem db 0 ; Ask Password when booting System
1416	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
1417	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
1418	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
1419	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
1420	CFG_DetectVirus db 0 ; Detect Virus ?
1421	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
1422	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
1423	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
1424	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
1425	dw 07A53h
1426	dw 0E797h
1427	dw 0A896h
1428	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
1429	dw 07A53h
1430	dw 0E797h
1431	dw 0A896h
1432	db 0 ; Rude-Protection - Removed since v0.28b
1433	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
1434	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
1435	; 0 - Do Nothing
1436	; 1 - Reset Time
1437	; 2 - Stop Time
1438	CFG_MakeSound db 0 ; Should be clear ;)
1439	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
1440	CFG_ResumeBIOSbootSeq db 0 ; If BIOS Boot Sequence should be resumed
1441	; 0 - Disabled
1442	; 1 - CD-ROM
1443	; 2 - Network
1444	; 3 - ZIP/LS120
1445	CFG_CooperBars db 0 ; If Cooper Bars should be shown
1446	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
1447	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
1448	; FFh -> Disabled
1449	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
1450	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
1451	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
1452	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
1453	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
1454	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
1455	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
1456
1457
1458	;
1459	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
1460	;
1461
1462	; 6cae
1463	eoc:
1464
1465
1466
1467	; Allways have the name of the installation volume
1468	; at this offset.
1469	; So future config changes will not break auto-install.
1470	here = $
1471	org 06D00h
1472	check_overlap here
1473
1474	soiv:
1475
1476	; SET(A)BOOT stores the volume name of the eCS system being installed here.
1477	; It is truncated to 11 chars because AiR-BOOT currently does not support
1478	; longer labelnames. The name is also capitalized.
1479	;eCS_InstallVolume db 12 dup (0)
1480	;eCS_InstallVolume db 'HIGHLOG' ,0
1481	eCS_InstallVolume db 0,'NOPHASEONE' ,0
1482	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
1483	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
1484	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
1485
1486
1487	; 6d0c
1488	; End of sector 55.
1489	eos55:
1490
1491
1492
1493
1494
1495
1496	;
1497	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
1498	;
1499
1500
1501
1502	;
1503	; 06DABh - 06C00h = 01ABh = 427 bytes.
1504	; Entries allocated down from 06E00 boundary.
1505	;
1506	here = $
1507	org 06DABh ; 427 Boundry
1508	check_overlap here
1509	sosvs:
1510
1511	; (432 - 5 = 427)
1512	AutoDrvLetter db 0
1513	AutoDrvLetterSerial dd 0
1514
1515	; This entry is also 34 bytes long (466 - 34 = 432)
1516	BIOScontIPTentry:
1517	db 0, 0, 0, 0, ' '
1518	db 0, 0FEh, Flags_Bootable
1519	dw 0 ; No Checksum :)
1520	db 0, 1, 0
1521	db 0, 1, 0 ; Location of Partition/Boot Record
1522	dd 0, 0
1523
1524	; VIR variables are for the AiR-BOOT Anti Virus Code
1525	; Most of them are backups of Interrupt Points, so we can check, if a
1526	; stealth virus is on-line, we can intercept its call.
1527	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
1528	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
1529	; from working, so the user has to press reset. That's saver than a Reboot.
1530	;
1531	; If a virus is found on the partition to boot, the system will ONLY halt,
1532	; nothing more, because we can not remove it. The user shall do it :)
1533	; Those viruses are detected via a real nasty method...Checksum-Checking of the
1534	; boot-record, which is to be executed. If it does not match the one in our
1535	; internal partition table, we will stop. You may however switch this detection
1536	; off or just reset it by switching 'VIBR Detection'.
1537
1538	; 478 - 12 = 466 ; 466 Sub-Part
1539	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
1540	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
1541	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
1542
1543	; 478 Boundry (512-34)
1544	; This entry is also 34 bytes long
1545	FloppyIPTentry db 0, 0, 0, 0, 'FloppyDrive'
1546	db 0, 0FFh, Flags_Bootable
1547	dw 0 ; No Checksum :)
1548	db 0, 1, 0
1549	db 0, 1, 0 ; Location of Partition/Boot Record
1550	dd 0, 0
1551	;------------------------------------------------------------------------------
1552
1553	eosvs:
1554
1555
1556
1557
1558	;org 06E00h ; Sector 56-57
1559
1560	here = $
1561	org image_size - 0a00h - (image_size - image_size_60secs)
1562	check_overlap here
1563
1564	sos56:
1565
1566
1567
1568	; Rousseau: This is the start of the AiR-BOOT IPT
1569
1570	PartitionTable: ; no-partitions detected... :]
1571	; db 1, 0, 0, 0, 'Harddisc 1'
1572	; db 0, 0FFh, Flags_BootAble
1573	; dw 0 ; No Checksum :)
1574	; db 0, 0, 1
1575	; db 0, 0, 1 ; Location of Partition/Boot Record
1576	; dd 0, 0
1577
1578	; Format is:
1579	;============
1580	; SerialNumber * 4
1581	; PartitionName * 11
1582	; Drive * 1
1583	; SystemID * 1 (means the partition type)
1584	; Flags * 1
1585	; Checksum * 2 (for virus checking)
1586	; LocationBegin * 3 (where the partition begins)
1587	; LocationPartTab * 3 (where the partition table is)
1588	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
1589	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
1590	; --------------------> 34 Bytes (total maximum partition-entries = 30)
1591
1592	db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
1593
1594
1595	; 73fa !!!!!!!!!!!!!!
1596	eos56:
1597
1598
1599
1600
1601	;org 071F6h
1602	; 73F6
1603
1604	; No need to check overlap here because this string will
1605	; be overwritten if the maximum partition count is reached.
1606	; So this is not a critical boundary.
1607	org image_size - 600h - (image_size - image_size_60secs) / 2 - 0ah
1608
1609	soiptsig:
1610	db 'AiRBOOTPAR' ; 1K internal partition table
1611
1612
1613
1614	eoiptsig:
1615
1616
1617
1618	;------------------------------------------------------------------------------
1619	;org 07200h ; Sector 58
1620
1621	here = $
1622	org image_size - 600h - (image_size - image_size_60secs) / 2
1623	check_overlap here
1624	soipt:
1625	sos58:
1626	; 7400h
1627	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
1628	; Format is:
1629	;============
1630	; PartitionPtr : BYTE * 30
1631	; --------------------> 30 Bytes * 45
1632
1633	DriveLetters db LocIPT_MaxPartitions dup (0)
1634	; Format is:
1635	;============
1636	; Drive-Letter : BYTE (80h-C:, 81h-D:)
1637	; --------------------> 1 Byte * 45
1638
1639	;
1640	; There is some room here, but this is the configuration section.
1641	; So not available for code.
1642	;
1643
1644	eos58:
1645	eoipt:
1646
1647
1648
1649
1650	;org 075F6h
1651	; No need to check overlap here because this string will
1652	; be overwritten if the maximum partition count is reached.
1653	; So this is not a critical boundary.
1654	org image_size - 200h -0ah
1655	check_overlap here
1656
1657	sohidsig:
1658	;
1659	db 'AiRBOOTHID' ; 1K internal Hide-partition table
1660
1661
1662	eohidsig:
1663
1664
1665
1666
1667
1668
1669	;------------------------------------------------------------------------------
1670	;org 07600h
1671
1672	here = $
1673	org image_size - 200h ; Sector 60
1674	check_overlap here
1675
1676	sohid:
1677	sos60:
1678
1679	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
1680	AirBootRocks db 'AiR-BOOT Rocks!',0
1681
1682	db 512-($-sohid)-2 dup(0)
1683
1684	eos60:
1685	eohid:
1686
1687
1688
1689
1690	;org 077FEh
1691
1692	here = $
1693	org image_size - 2
1694	check_overlap here
1695	dw 0BABEh
1696
1697	eoab:
1698
1699
1700	IFDEF SEGMENTED
1701	;
1702	; End of AiR-BOOT code and data.
1703	;
1704
1705	LDRIMAGE ENDS
1706
1707	;DATA_SEG ENDS
1708
1709	;
1710	; Uninitialized Data (BSS)
1711	;
1712	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
1713
1714	ENDIF
1715
1716	sobss:
1717	;------------------------------------------------------------------------------
1718	;
1719	; Removed org for BSS data to be more compatible
1720	; with segment-concatenated layout.
1721	;
1722	; What happens before this space ??
1723	; If org 0 corruption occurs.
1724	;
1725	org 02400h ; Uninitialized
1726	;~ org 00200h ; 200h geeft 3 floppies !
1727
1728	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
1729	BeginOfVariables:
1730	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
1731	JfsPBR db 512 dup (?) ; Temporary Sector for JFS PBR writeback
1732	LVMSector db 512 dup (?) ; Temporary Sector for LVM
1733	TmpSector db 512 dup (?) ; Temporary Sector
1734
1735	; Everything used to build a new IPT and reference it to the old one
1736	; IETS OVERSCHRIJFT DIT !!
1737	NewPartTable db 1536 dup (?) ; New Partition Table
1738
1739	NewHidePartTable db partition_count * LocHPT_LenOfHPT dup (?) ; New Hide-Partition Table
1740	NewDriveLetters db partition_count dup (?) ; Logical Drive-Letters
1741
1742	PartitionSizeTable db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
1743	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
1744	PartitionPointerCount db ? ; Count of total Partition Pointers
1745	PartitionXref db partition_count dup (?) ; X-Reference Table (holds new partnr, index is old part nr)
1746	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
1747	; 0 - no LVM support
1748	; 1 - LVM support, but no letter
1749	; 'C'-'Z' - assigned drive letter
1750
1751	TotalHarddiscs db ? ; Total harddrives (by POST)
1752	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
1753	NewPartitions db ? ; Freshly found partitions
1754	; Independent of SaveConfiguration
1755
1756	VideoIO_Segment dw ? ; Segment for Video I/O
1757
1758	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
1759	ExtendedAbsPosSet db ? ; If Absolute Position set
1760
1761	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
1762	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
1763	; (filled out by PreCrap)
1764	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
1765	; (for detailed error message)
1766
1767	; [Linux support removed since v1.02]
1768	;GotLinux db ? ; 1-Linux found
1769
1770	Menu_EntrySelected db ? ; Which partition we boot this time...
1771	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
1772	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
1773	Menu_TotalParts db ? ; Copy of CFG_BootParts
1774	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
1775	Menu_EntryDefault db ? ; Default Entry in filtered View
1776	Menu_EntryLast db ? ; LastBooted Entry in filtered View
1777	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
1778	; - All adjusted to menu locations
1779
1780	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
1781	PartSetup_ActivePart db ? ; Active Partition
1782	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
1783	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
1784	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
1785
1786	TimedBootEnable db ? ; Local Enable/Disable for timed boot
1787	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
1788	TimedSecondLeft db ? ; How many seconds are left till boom ?
1789	TimedSecondBack db ? ; To get a modification noticed
1790	TimedBootUsed db ? ; Timed Boot used for bootup ?
1791	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
1792	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
1793	SETUP_ExitEvent db ? ; Exit Event to end SETUP
1794	TempPasswordEntry db 17 dup (?)
1795	SETUP_OldPwd db 17 dup (?)
1796	SETUP_NewPwd db 17 dup (?)
1797	SETUP_VerifyPwd db 17 dup (?)
1798	StartSoundPlayed db ?
1799	ChangePartNameSave db ?
1800
1801	FX_UseCount dw ?
1802	FX_OverallTimer dw ?
1803	FX_WideScrollerTimer dw ?
1804	FX_WideScrollerCurPos dw ?
1805	FX_WideScrollerSpeed db ?
1806	FX_WideScrollerSpeedState db ?
1807	FX_WideScrollerDirection db ?
1808	FX_WideScrollerAbsDirection db ?
1809	FX_WideScrollerBounceSpeed db ?
1810	FX_CooperBarsTimer dw ?
1811
1812	; [Linux support removed since v1.02]
1813	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
1814	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
1815	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
1816	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
1817	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
1818	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
1819	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
1820	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
1821	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
1822	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
1823	;
1824	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
1825	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
1826	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
1827	;EndOfVariables:
1828
1829	; Dynamically Generated Tables - do not need to get initialized with NUL
1830	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
1831	FX_CooperState db 7 dup (?)
1832	FX_SinusPos db 7 dup (?)
1833	FX_CooperPos dw 7 dup (?)
1834	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
1835	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
1836
1837
1838
1839	;
1840	; Rousseau: added some stuff.
1841	;
1842
1843
1844	;EVEN
1845	HugeDisk db MaxDisks dup(?)
1846	TrueSecs dd MaxDisks dup(?)
1847
1848	; BIOS geometry of the boot-drive
1849	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
1850	; If Int13X is supported those values are used, otherwise the legacy values.
1851	BIOS_Cyls dd MaxDisks dup(?)
1852	BIOS_Heads dd MaxDisks dup(?)
1853	BIOS_Secs dd MaxDisks dup(?)
1854	BIOS_Bytes dw MaxDisks dup(?)
1855	BIOS_TotalSecs dq MaxDisks dup(?)
1856
1857	; LBA geometry of the boot-drive
1858	; Note that these values are taken from the BPB of a partition boot-record
1859	LVM_Cyls dd MaxDisks dup(?)
1860	LVM_Heads dd MaxDisks dup(?)
1861	LVM_Secs dd MaxDisks dup(?)
1862	LVM_Bytes dw MaxDisks dup(?)
1863	LVM_TotalSecs dq MaxDisks dup(?)
1864
1865	; OS/2 geometry of the boot-drive
1866	; Note that these values are taken from the BPB of a partition boot-record
1867	LOG_Cyls dd MaxDisks dup(?)
1868	LOG_Heads dd MaxDisks dup(?)
1869	LOG_Secs dd MaxDisks dup(?)
1870	LOG_Bytes dw MaxDisks dup(?)
1871	LOG_TotalSecs dq MaxDisks dup(?)
1872
1873	; Rousseau: moved here
1874	EndOfVariables:
1875
1876	; Temporary buffer for 48h INT13X bios call
1877	; Word aligned
1878	;even
1879	;align 2
1880
1881	;db 1 dup(?)
1882
1883	i13xbuf dw 1 dup (?) ; Size of the buffer;
1884	; this param must be present.
1885	; Code inserts it.
1886	db 126 dup(?) ; The buffer itself.
1887	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
1888	; (excluding the size word at the start).
1889
1890	ott db 512 dup(?)
1891
1892	eobss:
1893
1894	IFDEF SEGMENTED
1895	VOLATILE ENDS
1896	ELSE
1897	LDRIMAGE ENDS
1898	ENDIF
1899
1900	END AIR_BOOT
1901

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