Context Navigation

AIR-BOOT.ASM@ 34

Last change on this file since 34 was 34, checked in by Ben Rietbroek, 13 years ago

Reworked Special Partition Handling [2011-11-24]

Changes

Changed the special partitioning handling code to be more aware
of what kind of partition we're dealing with. This is debug-code.
Most of the added functions are actually redundant and are removed
in later revisions.

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

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format