Context Navigation

airboot.asm@ 72

Last change on this file since 72 was 72, checked in by Ben Rietbroek, 8 years ago

Temporarily disable checksum verification for code [v1.1.1-testing]

In the development enviroment, we use VirtualBox with VMDK images.
To quickly test modifications, the AirBoot loader image is merged into
the VMDK image ouside of the VM. Because the 'airboot2.exe' installer
is not used, no checksum is embedded, so we temporarily disable
checksumming for the code section here.

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.0-manual.pdf

File size: 95.1 KB

Rev	Line
[40]	1	;
[29]	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	;
[7]	19
[36]	20
[51]	21
	22
	23
	24
	25
	26	;##############################################################################
[46]	27	; AiR-BOOT / DEFINITIONS
[51]	28	;##############################################################################
[7]	29
[46]	30	;
	31	; Include AiR-BOOT Version Information.
[51]	32	; This version-info is defined using simpel EQU's so it can serve as a
	33	; single source for other formats. The AiR-BOOT signature and the
	34	; OS/2 BLDLEVEL use this basic version information.
[46]	35	;
[70]	36	include ../include/version.inc
[30]	37
[46]	38	;
	39	; Include OS/2 BLDLEVEL Information.
[51]	40	; It uses the version-information in VERSION.INC to build it's signature.
[46]	41	;
[60]	42	include bldlevel.inc
[46]	43
[51]	44	;
	45	; Include some macro's.
	46	; This file contains the ORIGIN macro that is used to detect overlaps.
	47	;
[60]	48	include ../include/asm.inc
[46]	49
[51]	50
[30]	51	; We actually don't want to use this directive because it generates extra
	52	; NOP instructions that we can do without.
[31]	53	; TASM also has a bug in that when the .ERR2 directive is used when
	54	; the .386 directive is in effect, the JUMPS directive is also active
	55	; and cannot be turned off.
[30]	56	; NOJUMPS seems to have no effect in this situation.
	57	; In this case 4 NOP instructions are generated after forward referencing jump
	58	; instructions, to allow for automatic recoding by TASM.
	59	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
[43]	60	IFDEF TASM
	61	;~ JUMPS
	62	ENDIF
[30]	63
[51]	64
[30]	65	;
	66	; If defined then each module is prefixed with it's name.
[51]	67	; This is used for debugging purposes but it also increases code space.
[30]	68	; It should be off in release code.
	69	;
[51]	70	;~ MODULE_NAMES EQU
[30]	71
	72
	73
[51]	74	; -----------------------------------------------------------------------------
	75	; DEBUG
	76	; -----------------------------------------------------------------------------
[30]	77
[31]	78	;
[51]	79	; Enable this to include Debug Modules and enable COM-port debugging.
	80	; To have room for the debug-code, the FX-code can only be enabled
	81	; when AUX_DEBUG is not defined.
[45]	82	;
[71]	83	AUX_DEBUG EQU
[45]	84
[51]	85	;
	86	; To have FX enabled, make sure FX_ENABLE is defined.
	87	; There is no need (for now) to remove Cooper Bars from the setup-menu
	88	; because AiR-BOOT does not crash when enabling Cooper Bars while FX
	89	; is not compiled in. Only TAB to post-screen does not work.
	90	; Way to go Martin !
	91	;
	92	IFNDEF AUX_DEBUG
	93	FX_ENABLED EQU
	94	ENDIF
[45]	95
[51]	96	;
	97	; If ReleaseCode is not defined, it will produce debug-able code...
	98	; Rousseau: This is currently not functional so don't use it !
	99	; It was used to debug AiR-BOOT as a .COM file.
	100	;
	101	ReleaseCode equ -1
[45]	102
	103
[51]	104	; -----------------------------------------------------------------------------
	105	; AUX
	106	; -----------------------------------------------------------------------------
[45]	107	;
[31]	108	; bits 7-5 = datarate
	109	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	110	; bits 4-3 = parity
	111	; (00 or 10 = none, 01 = odd, 11 = even)
	112	; bit 2 = stop-bits
	113	; (set = 2 stop-bits, clear = 1 stop-bit)
	114	; bits 1-0 = data-bits
	115	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	116	;
[30]	117
[31]	118	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
[43]	119	AUX_INIT_PARMS EQU 11100011b
[31]	120
[43]	121	; Com-port for debugging, 0 is disabled
	122	BIOS_COM_PORT EQU 1
	123
[31]	124	; Default word value for BIOS_AuxParms variable
	125	; Note that is has moved since v1.07
[43]	126	BIOS_AUXPARMS_DEFAULT EQU (AUX_INIT_PARMS SHL 8) OR BIOS_COM_PORT
[31]	127
[43]	128
	129
	130
[51]	131	; -----------------------------------------------------------------------------
	132	; LABELS
	133	; -----------------------------------------------------------------------------
	134	; Address labels after code-move
	135	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
	136	BootBasePtr equ 0h ; We put our MBR to this location
	137	BootBaseExec equ BootBasePtr+offset MBR_RealStart
	138	StackSeg equ 07000h ; Put the stack below the code
[7]	139
[31]	140	; Use different addresses depending on whether in pre-boot
[37]	141	; or debug (dos) environment.
[7]	142	IFDEF ReleaseCode
[37]	143	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
	144	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
	145	ELSE
	146	; Rousseau: where does this value come from ?
	147	; Should be CS.
	148	; Rectified in actual code by ignoring this value.
	149	StartBaseSeg equ 03A98h ; Adjust to DOS segment
	150	StartBasePtr equ 00100h ; We are a .COM file, DOS is active
[7]	151	ENDIF
	152
[30]	153
[51]	154
	155	; -----------------------------------------------------------------------------
	156	; VIDEO
	157	; -----------------------------------------------------------------------------
[30]	158	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	159	VideoIO_Page0 equ 0B800h
	160	VideoIO_Page1 equ 0B900h
	161	VideoIO_Page2 equ 0BA00h
	162	VideoIO_Page4 equ 0BC00h
	163	VideoIO_FXSegment equ 0A000h
	164
[30]	165	; Special line-drawing characters
[69]	166	TextChar_WinLineRight equ 0C4h
	167	TextChar_WinLineDown equ 0B3h
	168	TextChar_WinRep1 equ 0D1h
	169	TextChar_WinRep2 equ 0C5h
	170	TextChar_WinRep3 equ 0CFh
	171	TextChar_WinRep4 equ 0B5h
	172	TextChar_WinRep5 equ 0C6h
	173	TextChar_WinRep6 equ 0D8h
[7]	174
[51]	175
	176
	177	; -----------------------------------------------------------------------------
	178	; PARTITION TABLE
	179	; -----------------------------------------------------------------------------
	180	; Offsets for Partition-Entries in MBR/EBRs
[37]	181	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	182	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
[51]	183	LocBRPT_BeginCHS equ 1 ; Packed CHS value
	184	LocBRPT_BeginHead equ 1 ; Start head, usually < 16
	185	LocBRPT_BeginSector equ 2 ; Start sector, max 63 + cyl high bits
	186	LocBRPT_BeginCylinder equ 3 ; Start cylinder 8+2 bits, max 1023
[37]	187	LocBRPT_SystemID equ 4 ; Type of system using the partition
[51]	188	LocBRPT_EndCHS equ 5 ; Packed CHS value
	189	LocBRPT_EndHead equ 5 ; End head, usually < 16
	190	LocBRPT_EndSector equ 6 ; End sector, max 63 + cyl high bits
	191	LocBRPT_EndCylinder equ 7 ; End cylinder 8+2 bits, max 1023
	192	LocBRPT_RelativeBegin equ 8 ; LBA32 address of partition
	193	LocBRPT_AbsoluteLength equ 12 ; 32-bit length of partition
[7]	194
[51]	195	; Signature relative to start of MBR/EBR
	196	LocBR_Magic equ 510 ; Offset of 0AA55h signature
[7]	197
[51]	198	; -----------------------------------------------------------------------------
	199	; LVM RECORD
	200	; -----------------------------------------------------------------------------
[34]	201	; Used as a quick compare in LVM.ASM
[37]	202	LocLVM_SignatureByte0 equ 02h
[30]	203
[34]	204	; Offsets for LVM Information Sector.
	205	; These are relative to the start of the LVM sector.
[37]	206	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	207	LocLVM_CRC equ 08h ; CRC is a DWORD
	208	LocLVM_Heads equ 1ch ; Number of heads
	209	LocLVM_Secs equ 20h ; Sectors per Track
	210	LocLVM_DiskName equ 24h ; Name of the disk
	211	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	212	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	213
[34]	214	; An LVM info-sector can contain information on max. 4 partitions.
	215	; All 4 entries will be used when there 4 primary partitions defined.
	216	; For logical partitions, the LVM info-sector is located below the start
	217	; of the logical partition and only one LVM entry is used in that logical
	218	; LVM info-sector.
[37]	219	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	220
[51]	221
	222	; -----------------------------------------------------------------------------
	223	; LVM ENTRY
	224	; -----------------------------------------------------------------------------
[34]	225	; Offsets for LVM entry.
	226	; These are relative to the start of the entry.
[51]	227	LocLVM_VolumeID equ 00h ; DWORD
	228	LocLVM_PartitionID equ 04h ; DWORD
	229	LocLVM_PartitionSize equ 08h ; DWORD
	230	LocLVM_PartitionStart equ 0ch ; DWORD
[37]	231	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	232	LocLVM_Startable equ 11h ; is Startable (newly installed system)
[51]	233	LocLVM_VolumeLetter equ 12h ; Drive Letter for partition (C-Z or 0)
	234	LocLVM_Unknown equ 13h ; unknown BYTE (can be used ?)
	235	LocLVM_InstallLetter equ 13h ; unknown BYTE (can be used ?)
[37]	236
[71]	237	; Truncated to 11 chars when displayed in menu.
[34]	238	; MiniLVM sets both to the same value.
	239	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	240	; Same goes for LocLVM_DiskName.
[45]	241	; These offsets are relative to an LVM entry.
[37]	242	LocLVM_VolumeName equ 14h ; 20 bytes
	243	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	244
[45]	245	; LVM constants.
[51]	246	LocLVM_LabelLen equ 14h ; Length of LVM Label (Disk/Part/Vol)
	247	LocLVM_DiskNameLen equ 14h ; Length of LVM DiskName
	248	LocLVM_VolumeNameLen equ 14h ; Length of LVM VolumeName
	249	LocLVM_PartitionNameLen equ 14h ; Length of LVM PartitionName
[30]	250
[34]	251
[51]	252	; -----------------------------------------------------------------------------
	253	; AiR-BOOT IPT
	254	; -----------------------------------------------------------------------------
[7]	255	; Offsets for IPT (Internal Partition Table)
[51]	256	LocIPT_MaxPartitions equ max_partitions ; 45 in v1.07+
[37]	257	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	258	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	259	LocIPT_Serial equ 0 ; Serial from MBR ?
	260	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	261	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	262	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
[51]	263	LocIPT_Flags equ 17 ; AiR-BOOT Flags for part (see below)
[37]	264	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	265	LocIPT_LocationBegin equ 20 ; Begin of Partition
	266	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	267	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	268	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	269
[38]	270
[30]	271	; AiR-BOOT IPT-Flags
[37]	272	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
[51]	273	LocIPT_DefaultNonBootFlags equ 00000010b ; VIBR Detection is always on
[7]	274
[37]	275	Flags_Bootable equ 00000001b
	276	Flags_VIBR_Detection equ 00000010b
	277	Flags_HideFeature equ 00000100b
	278	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
[46]	279	Flags_ExtPartMShack equ 00010000b ; Ext. Partition M$-Hack req ?
[37]	280	Flags_NoPartName equ 01000000b
	281	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	282	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	283
[37]	284	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	285	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	286	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	287	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	288
[51]	289
	290	; -----------------------------------------------------------------------------
	291	; AiR-BOOT HPT
	292	; -----------------------------------------------------------------------------
	293	; Hidden Partition Table
	294	; Length of an HPT-entry ((45 * 6 bits-per-part) / 8) * 45
	295	; 33.75 = 34 bytes for HPT-entry, coincidently same as length of IPT-entry.
	296	; Packed table !
	297	LocHPT_LenOfHPT equ 34
	298
	299
	300	; -----------------------------------------------------------------------------
	301	; NAVIGATION KEYS
	302	; -----------------------------------------------------------------------------
[30]	303	; Navigation keys
[37]	304	Keys_Up equ 48h
	305	Keys_Down equ 50h
	306	Keys_Left equ 4Bh
	307	Keys_Right equ 4Dh
	308	Keys_PageUp equ 49h
	309	Keys_PageDown equ 51h
	310	Keys_GrayPlus equ 4Eh
	311	Keys_GrayMinus equ 4Ah
	312	Keys_Plus equ 1Bh
	313	Keys_Minus equ 35h
	314	Keys_ENTER equ 1Ch
	315	Keys_ESC equ 1h
	316	Keys_F1 equ 3Bh
	317	Keys_F10 equ 44h
[51]	318	Keys_C equ 2Eh ; Add. Check for Ctrl!
[37]	319	Keys_Y equ 2Ch
	320	Keys_Z equ 15h
	321	Keys_N equ 31h
	322	Keys_TAB equ 0Fh
	323	Keys_Delete equ 53h
	324	Keys_Backspace equ 0Eh
	325	Keys_Space equ 20h
[7]	326
[37]	327	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
[7]	328
	329
[51]	330	; -----------------------------------------------------------------------------
	331	; MISC
	332	; -----------------------------------------------------------------------------
	333	; Initial value for the FreeDriveletterMap
	334	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	335	; Each partition with an assigned drive-letter clears a bit in this map.
	336	; (Not implemented yet)
	337	InitialFreeDriveletterMap equ 00000011111111111111111111111100b
[46]	338
[51]	339	;
	340	; The first harddisk is BIOS coded 80h.
	341	; This makes a total of 128 disks that could be supported using this coding.
	342	; This value is used to store disk-information and this info is allocated
	343	; in the BSS. 64 disks ought to be enough for everybody :-)
	344	;
	345	MaxDisks equ 64
[46]	346
	347
	348
[51]	349
	350
	351
	352	;##############################################################################
[46]	353	; AiR-BOOT / MAIN-CODE
[51]	354	;##############################################################################
[46]	355
[51]	356	;
[43]	357	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	358	; off. Existing movzx instructions were replaced with 286 equivalent code.
	359	; Out of range relative jumps have been recoded.
[51]	360	;
	361	; Since version 1.0.8, JWasm is the preferred assembler and Tasm will be
	362	; dropped. Also, the chances of AiR-BOOT being used on a 286-machine are
	363	; very slim, so a future version will revert back to .386 and also incorporate
	364	; 32-bit code. This will enable some enhanced constructs such as scaled
	365	; indexing, bit-instructions, 32-bit registers and what not.
	366	;
[43]	367	.286
[30]	368
[51]	369	;
	370	; For Tasm, MODEL is needed for the USES directive to work.
	371	; So always use a model when assembling with Tasm otherwise registers on
	372	; function calls that use USES are not saved and restored.
	373	; The model itself, has no real effect because we generate a binary image
	374	; and not a segmented executable.
	375	; For the other assemblers we define no model to get rid of the default C/C++
	376	; segments for future object-linked versions of AiR-BOOT.
	377	;
[43]	378	IFDEF TASM
[46]	379	;~ .model large, basic
[43]	380	.model tiny,c
	381	ENDIF
[37]	382
	383	;
[51]	384	; The below is used to switch between the original 1-segment (code_seg) layout
	385	; and the new 2-segment (code_seg and bss_data) layout.
	386	; It will be removed in future versions.
[37]	387	; The 2-segment layout was needed for JWasm because it does not treat
[51]	388	; db ? at the end of a code segment as bss-data.
[37]	389	; Therefore, a true BSS segment is now used.
[51]	390	; Both the code_seg and the bss_data are grouped to the logical AIRBOOT
[37]	391	; segment.
	392	; Note that this influences the offsets in the BSS in the list-file and
	393	; the wdis disassembly file (.WDA).
	394	; They are now segment-relative. The true offset is resolved at link
	395	; time.
	396	;
[43]	397	SEGMENTED EQU
[37]	398
[51]	399	IFDEF SEGMENTED
	400	AIRBOOT GROUP LDRIMAGE,VOLATILE
	401	ENDIF
[37]	402
[51]	403	; Our code-segment starts here.
	404	LDRIMAGE SEGMENT USE16 PUBLIC 'CODE'
[7]	405
[51]	406	IFDEF SEGMENTED
	407	ASSUME CS:AIRBOOT, DS:AIRBOOT, ES:nothing, SS:nothing
	408	ELSE
	409	ASSUME CS:LDRIMAGE,DS:LDRIMAGE,ES:nothing, SS:nothing
	410	ENDIF
[30]	411
[51]	412
	413
[31]	414	;==============================================================================
[51]	415	; Sector 1
	416	;==============================================================================
[30]	417
[51]	418	;------------------------------------------------------------------------------
[46]	419	; We are not a .COM file at 100h but a BINARY image
	420	; of which only the 1st sector gets loaded at 0000:07c00h
	421	; by the BIOS. The code in this 1st sector is position
	422	; independent and moves itself to a new location at 8000:0000h.
	423	; Then it jumps to a new entry-point and loads the rest of
	424	; the image to the new location.
[51]	425	org 00000h
	426	;------------------------------------------------------------------------------
[30]	427
[46]	428
	429	;
[51]	430	; Since AiR-BOOT is a boot-loader residing in track0, the first 512 bytes
	431	; have the layout of a Master Boot Record (MBR). When AiR-BOOT get's installed,
	432	; the first 512 bytes of this code get's merged with the Partition Table.
	433	; The rest is installed in the remaining sectors with sector 62 (LBA 61)
	434	; being the last sector used by AiR-BOOT. Sector 63 is reserved for IBM LVM.
	435	; The last sector used by AiR-BOOT is a copy of the MBR that AiR-BOOT makes
	436	; every time a system gets booted.
[46]	437	;
[30]	438
[46]	439	;
[51]	440	; Due to the addition of an extra 'I13X' sugnature and code to preserve the
	441	; values of the registers on entry, the MBR-code has become a bit messy.
	442	; This will be cleaned-up in future versions.
	443	;
	444
	445	;
[46]	446	; Martin had a short jump followed by the AiRBOOT signature at first.
	447	; Then he encountered strange behaviour by some M$ operating-systems
	448	; if the the first insruction was not a CLI.
[30]	449	; But there was no room to insert the CLI and of course he did not want to
[51]	450	; change the location of the AiR-BOOT signature.
[30]	451	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
[51]	452	; jump that uses the 'A' of the AiR-BOOT signature as the jump displacement.
[46]	453	;
[30]	454
	455
[51]	456	; -----------------------------------------------------------------------------
	457	; FIRST ENTRY-POINT
	458	; -----------------------------------------------------------------------------
[52]	459	; BOOKMARK: FIRST ENTRY-POINT (Invoked by BIOS)
[51]	460	; ######################################################
	461	; # ENTRY-POINT WHERE THE BIOS TRANSFERS CONTROL TO US #
	462	; ######################################################
[37]	463	AiR_BOOT:
[51]	464	; Some M$ operating systems need a CLI
	465	; here otherwise they will go beserk
	466	; and will do funny things during
	467	; boot phase, it's laughable!
	468	MBR_1stOpc: cli
[30]	469
[51]	470	; JMP-Short -> MBR_Start
	471	; Uses the 'A' from the signature as the displacement !
	472	MBR_JmpOpc db 0EBh
[7]	473
[51]	474	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
	475	;~ db 'AiRBOOT',24h,02h,20h,12h,01h,08h,TXT_LanguageID
	476	MBR_ABSig: InsertAirbootSignature TXT_LanguageID
[37]	477
[51]	478	; Total Code Sectors Count.
	479	; Actual value will be inserted by FIXCODE.
	480	MBR_CodeSecs db 1
[37]	481
[51]	482	; Total Code Sectors Count, dynamically calculated.
	483	;~ db (code_end-$)/512
[37]	484
[51]	485	; Check-Sum for Code
	486	MBR_CheckCode dw 0
[37]	487
	488
	489
[51]	490	; -----------------------------------------------------------------------------
	491	; THIRD ENTRY-POINT
	492	; -----------------------------------------------------------------------------
[52]	493	; BOOKMARK: THIRD ENTRY-POINT (Relocate code)
[30]	494	;
	495	; No single instruction below should be changed, added or removed in the code
	496	; below as this will cause the jump-link to go haywire.
[31]	497	;
[37]	498	MBR_Start:
[51]	499	;
	500	; When we arrive here, no registers have been used yet.
	501	; So, they still contain the values the BIOS left in them.
	502	; We want to preserve those value's for later inspection
	503	; by putting them on the stack.
	504	;
[30]	505
[51]	506	; No space for this instruction here.
	507	; We'll enable interrupts later.
	508	;sti ; This opcode is dedicated to:
	509	; =MICROSOFT JUMP DEPARTMENT=
	510
	511
	512	; Push all registers with values provided by the BIOS
	513	; on the stack.
	514	pusha
	515	; Temporary save SS and SP so we still have access to this
	516	; stack after we have setup our own.
	517	mov dx,ss
	518	mov bx,sp
	519
	520	;
[37]	521	; Setup some base stuff
	522	; AX got loaded wrongly for debug, changed the instructions
	523	; without modifying the number of bytes.
[51]	524	; Don't comment-out the redundant instruction below because it
[37]	525	; will change the number of bytes and break the jump-chain.
[51]	526	;
	527
	528	; The segment we are moving ourself from (NOT USED)
	529	;mov ax, StartBaseSeg
[37]	530	;mov ds, ax
[51]	531
	532	; Make sure DS points to CS.
[37]	533	push cs
	534	pop ds
[51]	535
	536	; Setup the source and destination for the code move.
	537	mov si, StartBasePtr ; The offset we move ourself from
	538	mov ax, BootBaseSeg ; The target segment we move to
[37]	539	mov es, ax
[51]	540	;mov di, BootBasePtr ; The target offset we move to
	541	; Changed the instruction to make room.
	542	; So, BootBasePtr is not used !
	543	; The offset in the target segment is assumed to be 0000
	544	; anyway.
	545	xor di,di
	546	;sti
[30]	547
[51]	548	; Depending on pre-boot or debug.
	549	; Note that ReleaseCode is obsolete, so we will always move
	550	; 256 words; aka this sector, the MBR.
[37]	551	IFDEF ReleaseCode
	552	mov cx, 256 ; Pre-boot environment
	553	ELSE
[51]	554	mov cx, 32700 ; Old Debug environment (move ~64kB)
[37]	555	ENDIF
[30]	556
[37]	557	;
[51]	558	; This moves this 512-byte sector, loaded by the BIOS at
	559	; 0000:7c00 to 8000:0000.
[37]	560	;
[51]	561	cld
[37]	562	rep movsw
[30]	563
[51]	564	; Code an intersegment jump to the new location.
	565	; jmp BootBaseSeg:BootBaseExec
	566	; Note that DX:BX containts the old SS:SP.
[37]	567	db 0EAh
[46]	568	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	569	dw BootBaseSeg ; This is 08000h
[7]	570
[30]	571
[51]	572
	573
	574	; -----------------------------------------------------------------------------
	575	; SIMPLE MBR FUNCTIONS
	576	; -----------------------------------------------------------------------------
[30]	577	;
	578	; Some MBR-functions to provide absolute minimum functionality.
	579	;
	580
	581	;
[52]	582	; BOOKMARK: Halt System
[30]	583	; Entry-point for halting the system.
	584	;
[7]	585	MBR_HaltSystem:
[37]	586	mov ax, 8600h
	587	xor cx, cx
	588	mov dx, 500
[46]	589	int 15h ; Wait to display the whole screen :]
	590	MBR_HaltSys:
	591	cli
[37]	592	jmp MBR_HaltSys
[7]	593
[31]	594
[45]	595	;
	596	; Some small space for variables.
	597	;
	598	ORIGIN 0003Ch
	599
[51]	600	; Comport settings.
	601	; It had to be moved to create room for the double I13X signature.
[37]	602	; It cannot be in the config-area (sector 55)
[43]	603	; because that area is crc-protected and would not allow 'poking'.
	604	BIOS_AuxParms dw BIOS_AUXPARMS_DEFAULT
[31]	605
[51]	606
	607	IFDEF AUX_DEBUG
[37]	608	reserved db 6 dup('X')
[51]	609	ELSE
	610	reserved db 6 dup(0)
	611	ENDIF
[30]	612
[45]	613
[51]	614
	615
	616	; -----------------------------------------------------------------------------
	617	; SECOND ENTRY-POINT
	618	; -----------------------------------------------------------------------------
[37]	619	;
	620	; We arrive here after the first jump using the 'A' of the
[51]	621	; AiR-BOOT signature. So we ensure the jump is always at
	622	; this offset. We jump here, because Martin needed to
	623	; insert a CLI on start and did not want to change the
	624	; AiR-BOOT signature because of Microsoft inventions...
[45]	625	;
	626	ORIGIN 00044h
[37]	627
	628	; Jump again...
[51]	629	; This time to the code that relocates to 8000:0000.
[52]	630	; BOOKMARK: SECOND ENTRY_POINT (Skipped over AB signature)
[37]	631	jmp MBR_Start
	632
[30]	633	;
	634	; Entry-point when loading fails.
	635	;
[37]	636	db 'LOAD ERROR!', 0
	637	MBR_LoadError Proc Near
	638	mov si, offset $-12
	639	push cs
	640	pop ds
	641	call MBR_Teletype
	642	MBRLE_Halt:
	643	jmp MBRLE_Halt
	644	MBR_LoadError EndP
[7]	645
[30]	646	;
	647	; Entry-point when saving fails.
	648	;
[37]	649	db 'SAVE ERROR!', 0
	650	MBR_SaveError Proc Near
	651	mov si, offset $-12
	652	push cs
	653	pop ds
	654	call MBR_Teletype
	655	MBRSE_Halt:
	656	jmp MBRSE_Halt
	657	MBR_SaveError EndP
[7]	658
[30]	659
	660	; Put text on the screen using the BIOS tele-type function.
	661	; No attributes like color are supported.
[7]	662	; In: SI - Pointer to begin of string (EOS is 0)
	663	; Destroyed: SI
[37]	664	MBR_Teletype Proc Near Uses ax bx cx
	665	mov ah, 0Eh
	666	mov bx, 7
	667	MBRT_Loop:
	668	lodsb
	669	or al, al
	670	jz MBRT_End
	671	int 10h
	672	jmp MBRT_Loop
	673	MBRT_End:
	674	ret
	675	MBR_Teletype EndP
[7]	676
[30]	677	;
	678	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	679	;
	680
[52]	681	; In: BX - Base Check
	682	; DS:SI - Pointer to 512-byte-area to be included
	683	; Out: BX - Base Check Result
[7]	684	; Destroyed: SI will get updated (+512)
[37]	685	MBR_GetCheckOfSector Proc Near Uses ax cx
	686	mov cx, 256
	687	MBRGCOS_Loop:
	688	lodsw
	689	xor ax, 0BABEh
	690	xor bx, ax
	691	loop MBRGCOS_Loop
	692	or bx, bx
	693	jnz MBRGCOS_NoFixUp
	694	mov bx, 1 ; dont allow 0, cause 0 == empty
	695	MBRGCOS_NoFixUp:
	696	ret
	697	MBR_GetCheckOfSector EndP
[7]	698
[30]	699
	700
	701
	702
	703
[51]	704	; -----------------------------------------------------------------------------
	705	; ENTRY-POINT OF MOVED CODE
	706	; -----------------------------------------------------------------------------
	707
[30]	708	;
[51]	709	; When we arrive here we are running at 8000:0000.
	710	; DX:BX contains the SS:SP of the old stack.
[30]	711	;
	712
[51]	713	;
	714	; This is where the rest of AiR-BOOT gets loaded from track0.
	715	;
[52]	716	; BOOKMARK: Running at relocated position (Load additional sectors)
[31]	717	;------------------------------------------------------------------------------
[7]	718	MBR_RealStart:
[51]	719	;
	720	; Setup new stack and other segment registers.
	721	;
[37]	722	mov ax, StackSeg ; 07000h, below the moved code
	723	mov ss, ax
	724	mov sp, 7FFEh ; Even is better
[51]	725	push es ; ES holds segment where we moved to
[52]	726	pop ds ; Set DS=ES to Code Segment
[30]	727
[51]	728	;
	729	; Push the old SS:SP which was saved in DX:BX on the new stack.
	730	;
	731	push dx ; Old SS
	732	push bx ; Old SP
[43]	733
[51]	734
[37]	735	; If we are in debug-mode, all code is moved already,
	736	; so we can directly jump to it.
	737	; One difference is that in debug-mode, the whole .com image is
	738	; loaded by dos while when air-boot is active from the MBR it
	739	; does the loading itself.
[51]	740	; (This debug environment is obsolete and dis-fuctional)
[37]	741	IFNDEF ReleaseCode
	742	jmp AiR_BOOT_Start
	743	ENDIF
[30]	744
[37]	745	; Load the configuration-sectors from disk.
[51]	746	; These are the main configuration sector and the various
	747	; tables that follow it upto but not including the MBR backup.
[37]	748	mov bx, offset Configuration
[51]	749	mov dx, 0080h ; First harddrive
	750	mov cx, 0037h ; Config sector is at 55d (CHS)
[30]	751
[37]	752	; Call the i/o-part
	753	call MBR_LoadConfig
	754	jnc MBR_ConfigCopy_NoError
[30]	755
[37]	756	; Some error occured
	757	MBR_ConfigCopy_LoadError:
[51]	758	call MBR_LoadError ; Will Abort BootUp
[30]	759
[37]	760	; Load the code sectors
	761	MBR_ConfigCopy_NoError:
[51]	762	mov bx, offset FurtherMoreLoad ; Directly after MBR in mem
	763	mov dx, 0080h ; First harddrive
	764	mov cx, 0002h ; Start at second sector
	765	mov ah, 02h ; Read sectors
[30]	766
[51]	767	; This location is in the MBR.
	768	; It is filled in by the FIXCODE helper that post processes
	769	; the AIRBOOT loader image after it has been built.
	770	; FIXCODE also embeds the MBR protection-image.
	771	mov al, ds:[10h] ; Number of code sectors
	772	int 13h ; Call BIOS service
[37]	773	jnc MBR_RealStart_NoError
	774	jmp MBR_ConfigCopy_LoadError
[31]	775
	776
[37]	777	; [v1.05+]
	778	; Signature for IBM's LVM to detect our "powerful" features ;)
[45]	779	;
[37]	780	; [v1.0.8+]
	781	; Reworked MBR code to be able to create a
	782	; double 'I13X' signature.
	783	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	784	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	785	; See eCS bugtracker issue #3002
[45]	786	;
[37]	787	; Update: These are actually MOV EAX,'X31I' instructions
	788	; in the eCS LVM MBR-code. They are at different places in
[51]	789	; the v1.x and v2.x LVM MBR-code. Other code might depend on
	790	; their presence. Let's protect their location.
[45]	791	ORIGIN 000d0h
[37]	792	db 'I13X',0,'I13X',0
[31]	793
[30]	794
[37]	795	MBR_RealStart_NoError:
	796	; Now Check Code with CheckSum
	797	mov si, offset FurtherMoreLoad
[30]	798
[37]	799	;movzx cx, bptr ds:[10h]
	800	mov cl, ds:[10h]
	801	mov ch,0
[31]	802
[51]	803	; Claculate checksum
[37]	804	xor bx, bx
	805	MBR_RealStart_CheckCodeLoop:
	806	call MBR_GetCheckOfSector
	807	loop MBR_RealStart_CheckCodeLoop
[31]	808
[72]	809	; Verify checksum
[37]	810	cmp MBR_CheckCode, bx
[72]	811	;~ je MBR_RealStart_CheckSuccess ; CRC verified
	812	jmp MBR_RealStart_CheckSuccess ; Ignore CRC
[7]	813
[72]	814	; Oops, checksum mismatch -- halt the system
[37]	815	mov si, offset TXT_ERROR_Attention
	816	call MBR_Teletype
	817	mov si, offset TXT_ERROR_CheckCode
	818	call MBR_Teletype
	819	mov si, offset TXT_ERROR_CheckFailed
	820	call MBR_Teletype
	821	jmp MBR_HaltSystem
[51]	822
	823
	824	;
	825	; OK, all loading went fine so the rest of the code
	826	; is present now, so we jump to it.
	827	; The old SS:SP is still on the stack.
	828	;
[37]	829	MBR_RealStart_CheckSuccess:
	830	jmp AiR_BOOT_Start
[30]	831
	832
	833
	834
[37]	835
[31]	836	;------------------------------------------------------------------------------
[60]	837	include text/txtmbr.asm ; All translateable Text in MBR
[31]	838	;------------------------------------------------------------------------------
[30]	839
	840
	841
[31]	842	; This is an ugly kludge function to create space for the
	843	; double 'I13X' signature.
	844	; It loads the configuration sectors, but bx,cx and dx are not initialized
	845	; in this function. That's done around line 500.
	846	; Putting this few bytes here creates just enough room.
[37]	847	MBR_LoadConfig Proc Near
	848	; Changed from conditional assembler to calculated value
	849	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
	850	; Size of the ab-configuration in 512 byte sectors
	851	mov al, (MBR_BackUpMBR - Configuration) / 200h
	852	mov ah,02h
	853	int 13h
	854	ret
	855	MBR_LoadConfig EndP
[31]	856
[35]	857
[37]	858	; Disk Signature
	859	; Note that in an LVM 2.x MBR this collides
	860	; with the dummy PTE that it uses to look for IBM-BM
	861	; on the second harddisk.
[45]	862	ORIGIN 001B8h
	863
[52]	864	; AiR-BOOT installer will merge the field
	865	; from the MBR it replaces.
[51]	866	MBR_DrvSig db 'DSIG'
[31]	867
[45]	868	; Unused word at 01BCh.
	869	; An LVM 2.x MBR puts 0CC33h here.
[52]	870	; AiR-BOOT installer will merge the field
	871	; from the MBR it replaces.
[51]	872	MBR_Spare dw '$$'
[35]	873
	874
[45]	875	;
	876	; Partition Table.
	877	;
	878	ORIGIN 001BEh
[43]	879
[45]	880	; The 4 entries just for show.
[52]	881	; AiR-BOOT installer will merge them from the MBR it replaces.
[51]	882	MBR_PartTable:
[37]	883	db 16 dup('0')
	884	db 16 dup('1')
	885	db 16 dup('2')
	886	db 16 dup('3')
	887
	888	; Boot Sigbature
[51]	889	MBR_Sig dw 0aa55h
[37]	890
[30]	891
	892
	893
[37]	894
[45]	895
[51]	896
[31]	897	;==============================================================================
[51]	898	; Sector 2
	899	;==============================================================================
[30]	900
[51]	901	; -----------------------------------------------------------------------------
	902	; FILE-SYSTEM TABLES
	903	; -----------------------------------------------------------------------------
	904
	905
[45]	906	ORIGIN 00200h
[30]	907
[31]	908	;
	909	; Everything beyond this point is loaded on startup
	910	; and is NOT existant at first
	911	;
[7]	912	FurtherMoreLoad:
[30]	913
	914	;
	915	; Filesystem table correlating id with name.
	916	;
	917
[37]	918	; first Normal-Partition-ID, Hidden-Partition-ID
[51]	919	; and Default-Partition-Flags.
[37]	920	; 01h -> Boot-Able
	921	; 10h -> FAT32 - Name Getting Scheme
	922	; 20h -> No Name To Get (use Partition Name from IPT)
	923	; 40h -> 'L' flag possible
[7]	924	db 'AiRSYS-TABLE'
[37]	925	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
[29]	926	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	927	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	928	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	929	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	930	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	931	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	932	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	933	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	934	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	935	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	936	db 16 dup (0)
	937
[46]	938	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
	939	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	940	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
	941	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	942	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	943	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	944	db ' ', ' ', ' ', ' '
	945	db ' ', ' ', ' ', ' '
	946	db ' ', ' ', ' ', ' '
	947	db ' ', 'Kernel ', ' ', '0V-Award'
	948	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	949	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
[7]	950	; -> 44 Partition-Types
	951
[30]	952
	953
	954
[37]	955
	956
[51]	957	;==============================================================================
	958	; Sector 3
	959	;==============================================================================
[30]	960
[51]	961	; -----------------------------------------------------------------------------
	962	; ENTRY-POINT AFTER LOADING THE REST OF THE CODE
	963	; -----------------------------------------------------------------------------
[30]	964
[51]	965	ORIGIN 00400h
[30]	966
[43]	967
[51]	968	; ############################################
	969	; # ENTRY-POINT AFTER ALL THE INITIAL HASSLE #
	970	; ############################################
[52]	971	; BOOKMARK: AiR_BOOT_Start (AiR-BOOT now completely loaded)
[36]	972	AiR_BOOT_Start:
[30]	973
[36]	974
[51]	975	;
	976	; Enable interrupts.
	977	;
	978	sti
[36]	979
	980	;
[51]	981	; Pop the old SS:SP from the stack and save it in the BSS.
[52]	982	; Note that this is outside the normal variable area that gets cleared.
	983	; This allows AiR-BOOT to restart itself when debugging and come-up
	984	; with access to the original values of registers the BIOS passed.
[51]	985	;
	986	pop [OldSP]
	987	pop [OldSS]
	988
	989
	990	; -----------------------------------------------------------------------------
	991	; IBM-BM BOOT PREPARATION
	992	; -----------------------------------------------------------------------------
	993	;
[36]	994	; Since v1.0.8, AiR-BOOT is able to chainload IBM-BM.
	995	; When IBM-BM resides above the 1024-cylinder limit, the 'I13X'
	996	; signature is required at 3000:0000, FS needs to contain 3000h
	997	; and the 32-bit LBA address needs to follow the 'I13X' signature.
	998	; For booting IBM-BM from the second disk, a copy of the MBR of the
	999	; first disk is also required at 0000:7E00.
	1000	; This information is derived from the eCS 2.x LVM MBR.
	1001	;
	1002	; So, now is a good time to copy the MBR of the first disk to
	1003	; 0000:7E00 in case the partition that will be started is IBM-BM.
	1004	; This copy is located at 8000:0000 and DS already points to this
[51]	1005	; segment. The 'I13X' signature and FS will be setup later.
[36]	1006	;
[37]	1007	pusha ; Save all the general purpose regs
	1008	push es ; We need ES too, so save its value
	1009	xor ax,ax ; Segment 0000h
	1010	mov es,ax ; Make ES point to it
	1011	mov si,offset BootBasePtr ; Start of AiR-BOOT which has the MBR
	1012	mov di,7e00h ; Destination for the MBR for IBM-BM
	1013	mov cx,100h ; 256 words = 512 bytes
	1014	cld ; Direction from low to high
	1015	rep movsw ; Copy the 256 words of the MBR
	1016	pop es ; Restore previous value of ES
	1017	popa ; Restore all the general purpose regs
[36]	1018
	1019
[51]	1020	; -----------------------------------------------------------------------------
	1021	; PRECRAP
	1022	; -----------------------------------------------------------------------------
[36]	1023
[51]	1024	;
	1025	; First it clears the BSS area.
[52]	1026	; Note that the old SS:SP is stored outside this area so this
[51]	1027	; does not get lost.
	1028	; Then initialize various runtime variables and structures.
	1029	;
[52]	1030	; BOOKMARK: Pre Crap
[51]	1031	call PRECRAP_Main
	1032	; Number of harddisks and other system-info is now known.
[43]	1033
[51]	1034	;!
	1035	;! DEBUG_BLOCK
	1036	;! Let's see what the BIOS supplied us with...
	1037	;! Uncomment below to activate.
	1038	;!
	1039	__DUMP_BIOS_REGS__ EQU
	1040	IFDEF AUX_DEBUG
	1041	IFDEF __DUMP_BIOS_REGS__
	1042	pushf
	1043	pusha
	1044	; Print title.
	1045	mov si,offset [bios_reg]
	1046	call AuxIO_Print
	1047	; Save the current stack (SS:SP).
	1048	mov ax,ss
	1049	mov [CurrentSS],ax
	1050	mov [CurrentSP],sp
[45]	1051
[51]	1052	; Restore the old stack.
	1053	mov ss,[OldSS]
	1054	mov sp,[OldSP]
[30]	1055
[51]	1056	; Pop the registers with the BIOS values.
	1057	popa
	1058	; Push them back for AiR-BOOT restart (debug mode).
	1059	pusha
	1060	; Dump them to the serial-port.
	1061	call DEBUG_DumpRegisters
	1062	; Restore the current stack.
	1063	mov ax,[CurrentSS]
	1064	mov ss,ax
	1065	mov sp,[CurrentSP]
[30]	1066
[51]	1067	; Restore registers.
	1068	popa
	1069	popf
	1070	ENDIF
	1071	ENDIF
[30]	1072
	1073
[51]	1074
	1075
	1076	;!
	1077	;! DEBUG_BLOCK
	1078	;! Dump the registers at this point.
	1079	;! Uncomment below to activate.
	1080	;!
	1081	IFDEF AUX_DEBUG
	1082	;~ call DEBUG_DumpRegisters
	1083	; Dump drive-letters of dl-feature before partitions are
	1084	; scanned and processed.
	1085	call DEBUG_DumpDriveLetters
	1086	call DEBUG_DumpVolumeLetters
	1087	call DEBUG_DumpPartitionXref
	1088	ENDIF
	1089
	1090	; -----------------------------------------------------------------------------
	1091	; PARTITION SCAN
	1092	; -----------------------------------------------------------------------------
	1093	;
[52]	1094	; BOOKMARK: Scan all partitions
[51]	1095	;
	1096	call PARTSCAN_ScanForPartitions
	1097	; Internal Partition Table is now populated.
	1098
	1099	;!
	1100	;! DEBUG_BLOCK
	1101	;! Dump various tables.
	1102	;! Uncomment below to activate.
	1103	;!
	1104	IFDEF AUX_DEBUG
[50]	1105	;~ call DEBUG_DumpIPT
[49]	1106	;~ call DEBUG_DumpPartitionPointers
	1107	;~ call DEBUG_DumpNewPartTable
[50]	1108	;~ call DEBUG_DumpDriveLetters
[51]	1109	call DEBUG_DumpDriveLetters
	1110	call DEBUG_DumpVolumeLetters
	1111	call DEBUG_DumpPartitionXref
	1112	ENDIF
[49]	1113
[30]	1114
[51]	1115	; -----------------------------------------------------------------------------
	1116	; RESTORE FORCED DRIVELETTER CORRELATION [LVM]
	1117	; -----------------------------------------------------------------------------
	1118
	1119	;
	1120	; Reconnect forced drive-letters to their corresponding
	1121	; partitions.
	1122	;
[52]	1123	; BOOKMARK: Update Driveletters so they are in-sync again
[51]	1124	call PARTSCAN_UpdateDriveLetters
	1125	; Driveletter <-> Partition correlation is now restored.
	1126
	1127
	1128
	1129	;!
	1130	;! DEBUG_BLOCK
	1131	;! Dump various tables.
	1132	;! Uncomment below to activate.
	1133	;!
	1134	IFDEF AUX_DEBUG
	1135	;~ call DEBUG_DumpIPT
	1136	;~ call DEBUG_DumpPartitionPointers
	1137	;~ call DEBUG_DumpNewPartTable
	1138	;~ call DEBUG_DumpDriveLetters
	1139	call DEBUG_DumpDriveLetters
	1140	call DEBUG_DumpVolumeLetters
	1141	call DEBUG_DumpPartitionXref
	1142	ENDIF
	1143
	1144
	1145	; -----------------------------------------------------------------------------
	1146	; SHOW WE ARE ALIVE
	1147	; -----------------------------------------------------------------------------
	1148
	1149	;
	1150	; Put some info about AiR-BOOT and the system on the screen.
	1151	;
	1152
[49]	1153	; Display number of physical disks found
[37]	1154	mov si, offset DisksFound
	1155	call MBR_Teletype
	1156	mov al, [TotalHarddiscs]
	1157	call VideoIO_SyncPos
	1158	call VideoIO_PrintByteDynamicNumber
	1159	xor si,si
	1160	call MBR_TeletypeNL
[30]	1161
[49]	1162	; Display number of partitions found
[37]	1163	mov si, offset PartitionsFound
	1164	call MBR_Teletype
	1165	mov al, [CFG_Partitions]
	1166	call VideoIO_SyncPos
	1167	call VideoIO_PrintByteDynamicNumber
[30]	1168
[49]	1169	; Dump summier disk-info for disks found
[37]	1170	xor si,si
	1171	call MBR_TeletypeNL
	1172	call MBR_TeletypeNL
	1173	call VideoIO_SyncPos
	1174	mov dl,80h
	1175	call VideoIO_DumpDiskInfo
[30]	1176
	1177
	1178
	1179
	1180
[51]	1181	; -----------------------------------------------------------------------------
	1182	; eComStation PHASE1 CHECK
	1183	; -----------------------------------------------------------------------------
	1184
	1185	;
[67]	1186	; BOOKMARK: Check for OS/2 being installed
	1187	; Here we check if OS/2 is being installed.
[51]	1188	; If so, we forgo the menu and directly boot it.
	1189	;
	1190
	1191	; If the first byte of the name of the Install Volume is not 0
[49]	1192	; then we potentially have a phase1 boot.
[67]	1193	test byte ptr [OS2_InstallVolume],0ffh
[49]	1194	; Nope, so continue normally.
	1195	jz MBR_Main_ContinueBoot
[36]	1196
[49]	1197	; Setup phase1.
	1198	; It is still possible that a name was set for the
	1199	; Install Volume that does not exist.
	1200	; In that case CY will be clear and AL=0FFh.
	1201	call PART_SetupPhase1
	1202	; Oops, Install Volume not found, continue normally.
	1203	jnc MBR_Main_ContinueBoot
[30]	1204
	1205
[51]	1206	;
[49]	1207	; == Install Volume Found ==
[51]	1208	;
[30]	1209
[51]	1210
	1211	;!
	1212	;! DEBUG_BLOCK
	1213	;! Dump various tables.
	1214	;! Uncomment below to activate.
	1215	;!
	1216	IFDEF AUX_DEBUG
	1217	;~ call DEBUG_DumpIPT
	1218	;~ call DEBUG_DumpPartitionPointers
	1219	;~ call DEBUG_DumpPartitionXref
	1220	;~ call DEBUG_DumpNewPartTable
	1221	;~ call DEBUG_DumpDriveLetters
	1222	ENDIF
	1223
	1224
[67]	1225	; BOOKMARK: Scan for Partitions (Only if OS/2 install going on)
[51]	1226	; Because one or more partitions are possibly added, the
	1227	; PartitionXref table is not 'in sync' and could cause the
	1228	; wrong system to be automatically booted.
	1229	; So we rescan all partitions causing the PartitionXref
	1230	; table to be filled with correct values so the auto-boot
	1231	; from the new partition will work correctly.
[49]	1232	call PARTSCAN_ScanForPartitions
[30]	1233
	1234
[51]	1235	;!
	1236	;! DEBUG_BLOCK
	1237	;! Dump various tables.
	1238	;! Uncomment below to activate.
	1239	;!
	1240	IFDEF AUX_DEBUG
[50]	1241	;~ call DEBUG_DumpIPT
[49]	1242	;~ call DEBUG_DumpPartitionPointers
[50]	1243	;~ call DEBUG_DumpPartitionXref
[49]	1244	;~ call DEBUG_DumpNewPartTable
[51]	1245	;~ call DEBUG_DumpDriveLetters
	1246	ENDIF
[30]	1247
[51]	1248	; Setup automatic boot to forgo the Menu.
	1249	; PART_SetupPhase1 has filled in the other variables.
	1250	mov byte ptr [CFG_AutomaticBoot],1
[30]	1251
[51]	1252	;
	1253	; At this point the AiR-BOOT configuration has been altered
	1254	; to automatically boot the newly installed system without
	1255	; displaying the menu.
	1256	; Code further down the road will take care of that.
	1257	;
[49]	1258	jmp MBR_Main_ContinueBoot
[30]	1259
	1260
[49]	1261
	1262
[51]	1263	;
	1264	; Wether a new system is being installed or not,
	1265	; booting continues here.
	1266	;
	1267	MBR_Main_ContinueBoot:
[49]	1268
[51]	1269	;
	1270	; Inform user how to switch between post-screen and menu
	1271	; by putting this info on the screen.
	1272	;
[37]	1273	xor si,si
	1274	call MBR_TeletypeNL
	1275	xor si,si
	1276	call MBR_TeletypeNL
	1277	call MBR_TeletypeSyncPos
	1278	xor si,si
	1279	call MBR_TeletypeNL
	1280	call MBR_TeletypeNL
	1281	mov si, offset ShowMenu
	1282	call MBR_TeletypeBold
[30]	1283
	1284
[51]	1285	;
	1286	; Debug stop.
	1287	;
[30]	1288
[37]	1289	;
	1290	; ####################### WAIT FOR KEY ########################
	1291	;
[30]	1292
[37]	1293	; Wait for key so we can see debug log if ab-menu hangs.
[49]	1294	;~ xor ax, ax
	1295	;~ int 16h
[37]	1296	;call SOUND_Beep
[30]	1297
	1298
[51]	1299	; Copy BIOS POST to Second Page
[37]	1300	mov ax, VideoIO_Page1
[51]	1301	call VideoIO_BackUpTo
[30]	1302
[37]	1303	;call SOUND_Beep
[30]	1304
	1305
[52]	1306	; BOOKMARK: Save Configuration
[37]	1307	; Save configuration so phase1 boot-through is disabled
	1308	; on next boot.
[67]	1309	mov byte ptr [OS2_InstallVolume], 0
[37]	1310	call DriveIO_SaveConfiguration
[31]	1311
	1312
	1313
[37]	1314	;
[51]	1315	; See if setup needs to be entered.
[37]	1316	;
	1317	MBR_Main_ReEnterSetup:
	1318	call SETUP_CheckEnterSETUP
[7]	1319
[51]	1320	;
	1321	; Do some post processing.
	1322	;
[52]	1323	; BOOKMARK: After Crap
[37]	1324	call AFTERCRAP_Main
[30]	1325
[37]	1326	; [Linux support removed since v1.02]
	1327	; Now get FAT16-Linux Kernel Partition, If requested
	1328	;cmp [CFG_LinuxKrnlPartition], 0FFh
	1329	;je MBR_Main_NoLinuxKrnlPartition
	1330	;call LINUX_InitFAT16access
	1331	;MBR_Main_NoLinuxKrnlPartition:
[7]	1332
[30]	1333
[46]	1334
[37]	1335	MBR_Main_ReEnterBootMenuPre:
	1336	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	1337	call PART_CalculateMenuPartPointers
[7]	1338
[37]	1339	; ...and count that one...
[46]	1340	cmp byte ptr [PartitionPointerCount], 0
[37]	1341	jne MBR_Main_SomethingBootAble
	1342	mov si, offset TXT_NoBootAble
	1343	call MBR_Teletype
	1344	jmp MBR_HaltSystem
[30]	1345
[37]	1346	MBR_Main_SomethingBootAble:
	1347	; FixUp Values, define Timed Setup booting, etc.
	1348	call PART_FixUpDefaultPartitionValues
[7]	1349
[30]	1350
	1351
[37]	1352	; -------------------------------------------------- BOOT-MENU
	1353	MBR_Main_ReEnterBootMenu:
	1354	call BOOTMENU_ResetMenuVars ; reset has to be done
[46]	1355	test byte ptr [CFG_AutomaticBoot], 1
[37]	1356	jz MBR_Main_NoAutomaticBooting
[49]	1357
	1358
[37]	1359	; ------------------------------------------ AUTOMATIC BOOTING
	1360	; Select automatic partition, disable automatic booting for
	1361	; next time and boot system...
[46]	1362	mov byte ptr [CFG_AutomaticBoot], 0
[37]	1363	call PASSWORD_AskSystemPwd
	1364	mov al, Menu_EntryAutomatic
[30]	1365
[37]	1366	;mov al, 2
[30]	1367
[37]	1368	mov Menu_EntrySelected, al ; zero based
	1369	jmp MBR_Main_NoBootMenu
[7]	1370
[30]	1371
[49]	1372	MBR_Main_NoAutomaticBooting:
	1373
[37]	1374	;call SOUND_Beep
[30]	1375
[46]	1376	test byte ptr [CFG_BootMenuActive], 0FFh
[37]	1377	jnz MBR_Main_GotBootMenu
	1378	; ----------------------------------------------- NO BOOT-MENU
	1379	; Select default partition and boot system...
	1380	call PASSWORD_AskSystemPwd
[30]	1381
[37]	1382	;call VideoIO_DBG_WriteString2
[30]	1383
[37]	1384	mov al, Menu_EntryDefault
	1385	;mov al,0 ; zero based
	1386	mov Menu_EntrySelected, al
	1387	jmp MBR_Main_NoBootMenu
[7]	1388
[37]	1389	MBR_Main_GotBootMenu:
	1390	; ------------------------------------------ BOOT-MENU VISUALS
[51]	1391
	1392
	1393	IFDEF FX_ENABLED
[37]	1394	call FX_StartScreen
[51]	1395	ENDIF
[30]	1396
[52]	1397	; BOOKMARK: Build Main Menu
[37]	1398	call BOOTMENU_BuildBackground
	1399	call BOOTMENU_BuildMain
[51]	1400
	1401	IFDEF FX_ENABLED
[37]	1402	call FX_EndScreenRight
[51]	1403	ENDIF
	1404
[37]	1405	call PASSWORD_AskSystemPwd
	1406	call BOOTMENU_ResetTimedBoot
[30]	1407
[52]	1408	; BOOKMARK: Display Main Menu
[37]	1409	call BOOTMENU_Execute
[30]	1410
[37]	1411	jc MBR_Main_ReEnterSetup
	1412	call BOOTMENU_SetVarsAfterMenu
[30]	1413
[37]	1414	; ---------------------------------------------------- BOOTING
	1415	MBR_Main_NoBootMenu:
[51]	1416
	1417	IFDEF FX_ENABLED
[37]	1418	call FX_StartScreen
[51]	1419	ENDIF
	1420
[52]	1421	; BOOKMARK: Display bye-screen and start selected partition
[37]	1422	call BOOTMENU_BuildGoodBye
[51]	1423
	1424	IFDEF FX_ENABLED
[37]	1425	call FX_EndScreenRight
[51]	1426	ENDIF
	1427
[37]	1428	call PASSWORD_AskChangeBootPwd
[7]	1429
[37]	1430	IFNDEF ReleaseCode
	1431	; Debug Code to terminate DOS .COM program - used for
	1432	; testing AiR-BOOT
[51]	1433	; Obsolete.
[37]	1434	int 3
	1435	mov ax, 6200h
	1436	int 21h
	1437	mov es, bx
	1438	mov ax, 4C00h ; Quit program
	1439	int 21h
	1440	ENDIF
	1441	call ANTIVIR_SaveBackUpMBR
[7]	1442
[49]	1443	; Preload the selected menu-entry
[67]	1444	; However, this value will be wrong if OS/2 phase1 is
[49]	1445	; active and the installation partition is newly created.
	1446	; See below for the adjustment.
	1447	mov dl, byte ptr [Menu_EntrySelected]
	1448
[51]	1449
	1450	;
	1451	; Prepare to start the partition.
	1452	;
[49]	1453	jmp MBR_Main_StartPartition
	1454
	1455
	1456
[51]	1457	; -----------------------------------------------------------------------------
	1458	; START PARTITION
	1459	; -----------------------------------------------------------------------------
	1460
[49]	1461	MBR_Main_StartPartition:
	1462
[51]	1463	IFDEF AUX_DEBUG
[49]	1464	;~ call DEBUG_DumpIPT
	1465	;~ call DEBUG_DumpPartitionPointers
[50]	1466	;~ call DEBUG_DumpPartitionXref
[49]	1467	;~ call DEBUG_DumpNewPartTable
[51]	1468	ENDIF
[49]	1469
	1470
[37]	1471	; -------------------------------------------- START PARTITION
[51]	1472	; THIS DOES NOT RETURN !
[37]	1473	call PART_StartPartition
[30]	1474
	1475
[31]	1476
[51]	1477
[30]	1478	;
[51]	1479	; This entry-point restarts AiR-BOOT almost from scratch.
	1480	; It skips the movement of the MBR but otherwise it is a functional restart.
	1481	; The old BIOS SS:SP where the registers on entry are stored is passed along.
[52]	1482	; This entry-point is used for debugging purposes.
[51]	1483	;
[52]	1484	; BOOKMARK: AiR-BOOT Restart (used for debugging)
[51]	1485	AirbootRestart:
	1486	mov bx, [OldSP] ; Old SP when BIOS transferred control to AB
	1487	mov dx, [OldSS] ; Old SS when BIOS transferred control to AB
	1488	jmp MBR_RealStart
	1489
	1490
	1491	;
	1492	; This entry-point displays a popup that the system is halted
	1493	; and then halts the system.
	1494	; It is entered on severe error conditions.
	1495	;
[52]	1496	; BOOKMARK: Halt System
[51]	1497	HaltSystem:
	1498	call VideoIO_ClearScreen
	1499	mov ax,0ababh
	1500	mov cx, 0C04h
	1501	mov si, offset SystemHalted
	1502	call SETUP_ShowErrorBox
	1503	; Halt the system.
	1504	jmp MBR_HaltSystem
	1505
	1506
	1507
	1508
	1509
	1510
	1511	;
[52]	1512	; The following section includes various assembler modules
	1513	; at the source level. These contain functionality for a
	1514	; multitude of categories like disk-access, video-io, lvm,
	1515	; debugging, etc. Later versions of AiR-BOOT will use such
	1516	; modules at the object-file level so they can be shared
	1517	; more easily.
[51]	1518	;
	1519
	1520
	1521	; -----------------------------------------------------------------------------
	1522	; INCLUDED FILE SECTION
	1523	; -----------------------------------------------------------------------------
	1524
[52]	1525	; BOOKMARK: Include Section
	1526
[51]	1527	;
[30]	1528	; Include other code-modules here.
	1529	;
[51]	1530
[30]	1531	b_std_txt:
[60]	1532	include regular/std_text.asm ; Standard (non-translateable text)
[30]	1533	size_std_txt = $-b_std_txt
	1534
	1535	b_driveio:
[60]	1536	include regular/driveio.asm ; Drive I/O, Config Load/Save
[30]	1537	size_driveio = $-b_driveio
	1538
[43]	1539	b_lvm:
[60]	1540	include special/lvm.asm ; LVM-specific code
[43]	1541	size_lvm = $-b_lvm
	1542
[30]	1543	b_videoio:
[60]	1544	include regular/videoio.asm ; Video I/O
[30]	1545	size_videoio = $-b_videoio
	1546
	1547	b_timer:
[60]	1548	include regular/timer.asm ; Timer
[30]	1549	size_timer = $-b_timer
	1550
	1551	b_partmain:
[60]	1552	include regular/partmain.asm ; Regular Partition Routines
[30]	1553	size_partmain = $-b_partmain
	1554
	1555	b_partscan:
[60]	1556	include regular/partscan.asm ; Partition Scanning
[30]	1557	size_partscan = $-b_partscan
	1558
	1559	b_bootmenu:
[60]	1560	include regular/bootmenu.asm ; Boot-Menu
[30]	1561	size_bootmenu = $-b_bootmenu
	1562
	1563	b_password:
[60]	1564	include regular/password.asm ; Password related
[30]	1565	size_password = $-b_password
	1566
	1567	b_other:
[60]	1568	include regular/other.asm ; Other Routines
[30]	1569	size_other = $-b_other
[7]	1570
[30]	1571	b_main:
[60]	1572	include setup/main.asm ; The whole AiR-BOOT SETUP
[30]	1573	size_main = $-b_main
	1574
	1575	b_math:
[60]	1576	include regular/math.asm ; Math functions (like 32-bit multiply)
[30]	1577	size_math = $-b_math
	1578
	1579	b_txtother:
[60]	1580	include text/txtother.asm ; All translateable Text-Strings
[30]	1581	size_txtother = $-b_txtother
	1582
	1583	b_txtmenus:
[60]	1584	include text/txtmenus.asm ; All translateable Menu-text
[30]	1585	size_txtmenus = $-b_txtmenus
	1586
	1587	b_charset:
[60]	1588	include text/charset.asm ; Special Video Charsets (if needed)
[30]	1589	size_charset = $-b_charset
	1590
[36]	1591	b_conv:
[60]	1592	include regular/conv.asm ; Various conversion routines
[36]	1593	size_conv = $-b_conv
[30]	1594
	1595	b_virus:
[60]	1596	include special/virus.asm ; Virus Detection / Anti-Virus
[30]	1597	size_virus = $-b_virus
[51]	1598
[29]	1599	; [Linux support removed since v1.02]
[60]	1600	;include special/fat16.asm ; FAT-16 Support
	1601	;include special/linux.asm ; Linux Kernel Support
[51]	1602
[30]	1603	b_billsuxx:
[60]	1604	include special/f00k/billsuxx.asm ; Extended Partition - Microsoft-Hack
[30]	1605	size_billsuxx = $-b_billsuxx
	1606
	1607	b_sound:
[60]	1608	include special/sound.asm ; Sound
[30]	1609	size_sound = $-b_sound
	1610
	1611	b_apm:
[60]	1612	include special/apm.asm ; Power Managment Support
[30]	1613	size_apm = $-b_apm
	1614
[51]	1615
	1616
	1617	;
	1618	; Cyrillic support.
	1619	;
	1620	IFDEF TXT_IncludeCyrillic
	1621	b_ccharset:
[60]	1622	include special/charset.asm ; Charset Support (e.g. Cyrillic)
[51]	1623	size_ccharset = $-b_ccharset
	1624	ENDIF
	1625
	1626	; Various debugging routines, uses AUXIO and CONV
	1627	IFDEF AUX_DEBUG
	1628	b_debug:
[60]	1629	include regular/debug.asm ; Debug module
[51]	1630	size_debug = $-b_debug
	1631	b_auxio:
[60]	1632	include regular/auxio.asm ; Com-port support for debugging
[51]	1633	size_auxio = $-b_auxio
	1634	ENDIF
	1635
	1636	;
	1637	; We only include this if FX_ENABLED is defined.
	1638	; FX is disabled when debugging to have more room for debug-code.
	1639	; The module compiles to 50eh = 1294 bytes, so that is a lot.
	1640	;
	1641	IFDEF FX_ENABLED
[30]	1642	b_fx:
[60]	1643	include special/fx.asm ; l33t Cooper-Bars/Scrolling <bg>
[30]	1644	size_fx = $-b_fx
[51]	1645	ENDIF
[30]	1646
	1647
[51]	1648	;
	1649	; End of code marker.
	1650	;
[52]	1651	; BOOKMARK: END OF CODE
[51]	1652	db 'BABE'
	1653	db 'FACE'
[30]	1654
[47]	1655
[51]	1656	; -----------------------------------------------------------------------------
	1657	; END OF CODE
	1658	; -----------------------------------------------------------------------------
	1659	code_end:
	1660
	1661
	1662
	1663
	1664
	1665
	1666
	1667
	1668
	1669
	1670	; -----------------------------------------------------------------------------
	1671	; BLDLEVEL INFORMATION
	1672	; -----------------------------------------------------------------------------
	1673
[52]	1674	; BOOKMARK: BLDLEVEL Information
[51]	1675	ORIGIN 068A0h
	1676
	1677	;
	1678	; The space between this offset and code_end is the space
	1679	; available for code.
	1680	;
	1681	zzz_code_space = $ - code_end
	1682
	1683
[46]	1684	bld_level:
[43]	1685	;
[46]	1686	; Here we insert the OS/2 BLDLEVEL Information.
	1687	; It is composed of the AiR-BOOT version-info and other
[51]	1688	; information. It is unique for each release of AiR-BOOT.
[46]	1689	;
[51]	1690
	1691	;
[47]	1692	; ?? When AUX_DEBUG is enabled and the above org is active,
	1693	; the BLDLEVEL gets corrupted eventhough it gets inserted here
	1694	; explicitly. The effect is almost like an 'OR' or a merge
	1695	; with the already generated FX code.
	1696	; Tasm and JWasm produce different results.
	1697	; ??
	1698	;
[46]	1699	InsertBuildLevel
	1700
[47]	1701
[30]	1702
[7]	1703
	1704
[51]	1705	;==============================================================================
	1706	; Sector 53
	1707	;==============================================================================
	1708
[45]	1709	;
[51]	1710	; From here on, the layout of the image consists of:
	1711	; - AiR-BOOT Protection Image
	1712	; - AiR-BOOT Configuration
	1713	; - DriveLetters
	1714	; - Install Volume
	1715	; - Floppy/CDROM/BIOS BOOT ENTRIES
	1716	; - Internal Partition Table (IPT)
	1717	; - Hidden Partition Table (HPT)
	1718	; - MBR Backup
[45]	1719	;
[7]	1720
[37]	1721	;
[51]	1722	; After that, the BSS follows with several runtime
	1723	; variables and structures.
	1724	; The BSS is not part of the image on disk of course.
	1725	;
	1726
	1727	; -----------------------------------------------------------------------------
	1728	; PROTECTION IMAGE
	1729	; -----------------------------------------------------------------------------
	1730
	1731	;
[52]	1732	; This is the AiR-BOOT MBR Protection Image.
[46]	1733	; The stuff generated here gets overwritten when the
[51]	1734	; MBR_PROT module, which is assembled separately,
	1735	; gets binary merged.
[37]	1736	; So you won't find the string below in the generated binary.
	1737	;
[52]	1738	; BOOKMARK: AiR-BOOT MBR Protection Image
[51]	1739	ORIGIN 06900h
[46]	1740
	1741
[51]	1742
	1743
[46]	1744	;
[51]	1745	; Hardcoded to 768 bytes (MBR_PROT.ASM)
[46]	1746	; The string below is searched for by the FIXCODE helper and must be
[51]	1747	; page (256 bytes) aligned.
[46]	1748	;
[51]	1749	; It seems to be possible to shrink the protection-image to 768 bytes.
	1750	; That gives us an additional 256 bytes of code-space.
	1751	; MBR-PROT.ASM,FIXCODE.C,PARTMAIN.ASM and AIR-BOOT.ASM need to be adjusted for that.
	1752	; Also the granularity needs to change from 512 bytes to 256 bytes since
	1753	; 6900h is not a 512-byte boundary.
	1754	;
	1755	; 20120908 - Done.
	1756	;
[37]	1757	MBR_Protection db 'AiR-BOOT MBR-Protection Image'
	1758
[43]	1759	; Just fill.
[51]	1760	;~ db 1024-($-MBR_Protection) dup('M')
	1761	db 768-($-MBR_Protection) dup('M')
[37]	1762
	1763
[51]	1764
	1765
	1766
	1767
	1768
[31]	1769	;==============================================================================
[51]	1770	; Sector 55
	1771	;==============================================================================
	1772	; -----------------------------------------------------------------------------
	1773	; AiR-BOOT CONFIGURATION
	1774	; -----------------------------------------------------------------------------
[30]	1775
[37]	1776	;
	1777	; This section contains the AiR-BOOT configuration.
	1778	; Note that it has a version that should be updated
	1779	; when stuff is added.
	1780	; Also add stuff to the end so that offsets of other
	1781	; variables remain vaild.
	1782	;
[52]	1783	; BOOKMARK: AiR-BOOT Configuration Sector
[45]	1784	ORIGIN 06C00h
[30]	1785
[37]	1786	Configuration:
[69]	1787	; This is the signature for the AiR-BOOT Configuration.
	1788	; Note that this configuration section, like the code section,
	1789	; is CRC protected. This means that poking values in these
	1790	; sections on the disk will invalidate AiR-BOOT and cause it
	1791	; to halt. This is a protection method against other software
	1792	; modifying stuff in track 0.
	1793	db 'AiRCFG-TABLE',0adh
[55]	1794	db 01h, 10h, 'U' ; "Compressed" ID String
[37]	1795	; Version 1.02 was for code 1.06, 1.03 was internal
	1796	; and 1.04,1.05 and 1.06 do not exist.
[46]	1797	;
	1798	; 1.07 was used with AB v1.07 and introduced the phase1
	1799	; system-name. For the rest it is compatible with v1.02.
	1800	;
	1801	; 1.0.8 is introduced with AB v1.0.8 and indicates the movement
	1802	; of several components and the packing of the hideparttable.
	1803	; The core configuration has not changed but the generated
	1804	; configuration has. The v1.0.8 installer handles upgrading.
	1805	;
[54]	1806	; It has been decided that uneven minor numbers will be
	1807	; test-versions. Therefore v1.0.8 has been bumbed to v1.1.0.
[60]	1808	;
[37]	1809	; It is not required for the config to have the
	1810	; same version as the code, so in the future
	1811	; the code version might be higher than the
	1812	; config version if there are no changes to the latter.
[46]	1813	;
[7]	1814
[37]	1815	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1816	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
[7]	1817
[37]	1818	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
[7]	1819
[37]	1820	CFG_Partitions db 0 ; Count of partitions in IPT
[51]	1821	CFG_MiscFlags db 1 ; Miscellaneous Flags (See EQUates)
[37]	1822	CFG_PartDefault db 0 ; Default-Partition (Base=0)
[7]	1823
[37]	1824	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
	1825	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
	1826	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1827	CFG_TimedDelay dw 123 ; Timed Boot - Delay
	1828	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
	1829	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1830	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
	1831	CFG_IncludeFloppy db 1 ; Include Floppy Drives in Boot-Menu
	1832	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
[7]	1833	; v0.29+ -> 2 - Detailed Bootmenu
[37]	1834	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1835	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1836	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1837	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1838	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1839	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1840	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
	1841	CFG_DetectVirus db 0 ; Detect Virus ?
	1842	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1843	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1844	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
	1845	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1846	dw 07A53h
	1847	dw 0E797h
	1848	dw 0A896h
	1849	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1850	dw 07A53h
	1851	dw 0E797h
	1852	dw 0A896h
	1853	db 0 ; Rude-Protection - Removed since v0.28b
	1854	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1855	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1856	; 0 - Do Nothing
	1857	; 1 - Reset Time
	1858	; 2 - Stop Time
	1859	CFG_MakeSound db 0 ; Should be clear ;)
	1860	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
[51]	1861	CFG_ResumeBIOSbootSeq db 1 ; If BIOS Boot Sequence should be resumed
[37]	1862	; 0 - Disabled
	1863	; 1 - CD-ROM
	1864	; 2 - Network
	1865	; 3 - ZIP/LS120
	1866	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1867	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1868	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1869	; FFh -> Disabled
	1870	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1871	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1872	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1873	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1874	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
	1875	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
	1876	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1877
[30]	1878
	1879	;
	1880	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1881	;
	1882
[45]	1883	;
	1884	; Drive Letters.
	1885	;
[52]	1886	; BOOKMARK: Stored Drive Letters
[45]	1887	ORIGIN 06CB0h
[30]	1888
	1889
[51]	1890	; -----------------------------------------------------------------------------
	1891	; DRIVE LETTERS
	1892	; -----------------------------------------------------------------------------
	1893
[45]	1894	;
	1895	; Moved here to make room for packed hiddenparttable.
[71]	1896	; This gets filled with drive-letters that are assigned using the dl-feature.
[45]	1897	;
	1898	DriveLetters db LocIPT_MaxPartitions dup (0)
	1899	; Format is:
	1900	;============
	1901	; Drive-Letter : BYTE (80h-C:, 81h-D:)
	1902	; --------------------> 1 Byte * 45
[30]	1903
[51]	1904
	1905
	1906	; -----------------------------------------------------------------------------
	1907	; INSTALL VOLUME
	1908	; -----------------------------------------------------------------------------
	1909
[45]	1910	;
[37]	1911	; Allways have the name of the installation volume
	1912	; at this offset.
	1913	; So future config changes will not break auto-install.
[45]	1914	;
[67]	1915	; BOOKMARK: Name of OS/2 Installation Volume
[45]	1916	ORIGIN 06D00h
[37]	1917
[67]	1918	; SET(A)BOOT stores the volume name of the OS/2 system being installed here.
[31]	1919	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1920	; longer labelnames. The name is also capitalized.
[67]	1921	;OS2_InstallVolume db 12 dup (0)
	1922	;OS2_InstallVolume db 'HIGHLOG' ,0
	1923	;OS2_InstallVolume db 'ECS-MIDDLE',0,0
	1924	;OS2_InstallVolume db 'ECS-HIGH',0,0,0,0
	1925	;OS2_InstallVolume db 'ECS-HIGH',0,'NO',0
	1926	;OS2_InstallVolume db 'KANWEG2',0
	1927	OS2_InstallVolume db 0,'NOPHASEONE' ,0
[30]	1928
[37]	1929	;
	1930	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1931	;
	1932
[51]	1933
	1934	; -----------------------------------------------------------------------------
	1935	; FLOPPY/CDROM/BIOS BOOT ENTRIES
	1936	; -----------------------------------------------------------------------------
	1937
[37]	1938	;
	1939	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1940	; Entries allocated down from 06E00 boundary.
	1941	;
[52]	1942	; BOOKMARK: Floppy/CD-ROM/BIOS Boot Entries
[46]	1943	ORIGIN 06DABh ; 427 Boundry
[37]	1944
	1945	; (432 - 5 = 427)
	1946	AutoDrvLetter db 0
	1947	AutoDrvLetterSerial dd 0
	1948
	1949	; This entry is also 34 bytes long (466 - 34 = 432)
	1950	BIOScontIPTentry:
	1951	db 0, 0, 0, 0, ' '
	1952	db 0, 0FEh, Flags_Bootable
	1953	dw 0 ; No Checksum :)
	1954	db 0, 1, 0
	1955	db 0, 1, 0 ; Location of Partition/Boot Record
	1956	dd 0, 0
	1957
[7]	1958	; VIR variables are for the AiR-BOOT Anti Virus Code
	1959	; Most of them are backups of Interrupt Points, so we can check, if a
	1960	; stealth virus is on-line, we can intercept its call.
	1961	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[46]	1962	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the
	1963	; system from working, so the user has to press reset.
	1964	; That's saver than a Reboot.
[7]	1965	;
	1966	; If a virus is found on the partition to boot, the system will ONLY halt,
	1967	; nothing more, because we can not remove it. The user shall do it :)
	1968	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1969	; boot-record, which is to be executed. If it does not match the one in our
	1970	; internal partition table, we will stop. You may however switch this detection
	1971	; off or just reset it by switching 'VIBR Detection'.
	1972
[37]	1973	; 478 - 12 = 466 ; 466 Sub-Part
	1974	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1975	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1976	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
[30]	1977
[37]	1978	; 478 Boundry (512-34)
	1979	; This entry is also 34 bytes long
	1980	FloppyIPTentry db 0, 0, 0, 0, 'FloppyDrive'
	1981	db 0, 0FFh, Flags_Bootable
	1982	dw 0 ; No Checksum :)
	1983	db 0, 1, 0
	1984	db 0, 1, 0 ; Location of Partition/Boot Record
	1985	dd 0, 0
[30]	1986
	1987
[51]	1988
	1989	; -----------------------------------------------------------------------------
	1990	; INTERNAL PARTITION TABLE (IPT)
	1991	; -----------------------------------------------------------------------------
	1992
[45]	1993	;
	1994	; AiR-BOOT Internal Partition Table (IPT)
	1995	;
[52]	1996	; BOOKMARK: Internal Partition Table
[45]	1997	ORIGIN % (image_size - 0a00h - (image_size - image_size_60secs))
[30]	1998
	1999
[45]	2000	;
	2001	; Rousseau: This is the start of the AiR-BOOT IPT
	2002	;
	2003	PartitionTable db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
	2004	; no-partitions detected... :]
[7]	2005	; db 1, 0, 0, 0, 'Harddisc 1'
	2006	; db 0, 0FFh, Flags_BootAble
	2007	; dw 0 ; No Checksum :)
	2008	; db 0, 0, 1
[46]	2009	; db 0, 0, 1 ; Location of Partition/Boot Record
[7]	2010	; dd 0, 0
	2011
[37]	2012	; Format is:
	2013	;============
	2014	; SerialNumber * 4
	2015	; PartitionName * 11
	2016	; Drive * 1
	2017	; SystemID * 1 (means the partition type)
	2018	; Flags * 1
	2019	; Checksum * 2 (for virus checking)
	2020	; LocationBegin * 3 (where the partition begins)
	2021	; LocationPartTab * 3 (where the partition table is)
	2022	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	2023	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
	2024	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	2025
[30]	2026
[37]	2027
	2028	; No need to check overlap here because this string will
	2029	; be overwritten if the maximum partition count is reached.
	2030	; So this is not a critical boundary.
[45]	2031	ORG (image_size - 600h - (image_size - image_size_60secs) / 2 - 10)
[37]	2032
	2033	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	2034
	2035
	2036
[51]	2037	; -----------------------------------------------------------------------------
	2038	; HIDDEN PARTITION TABLE (HPT)
	2039	; -----------------------------------------------------------------------------
[30]	2040
[45]	2041	;
	2042	; Hidden Partition Table (6-bit packed as of v1.0.8)
	2043	;
[52]	2044	; BOOKMARK: Hidden Partition Table (packed)
[45]	2045	ORIGIN % (image_size - 600h - (image_size - image_size_60secs) / 2)
[30]	2046
[38]	2047	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
[37]	2048	; Format is:
	2049	;============
	2050	; PartitionPtr : BYTE * 30
[38]	2051	; --------------------> 30 Bytes * 45
[30]	2052
[37]	2053	;
[45]	2054	; Driveletters were here.
	2055	; Moved down to make room for packed hideparttable.
	2056	;
[30]	2057
[37]	2058
[45]	2059	;
	2060	; End of hidden partition table.
	2061	; Check overlap here for security reasons.
	2062	;
	2063	ORIGIN % (image_size - 200h - 5)
[30]	2064
[45]	2065	; 79fa - end of packed hide table
	2066	db 'ABHID' ; 1K internal Hide-partition table
[30]	2067
	2068
	2069
	2070
[51]	2071	;==============================================================================
	2072	; Sector 62
	2073	;==============================================================================
	2074	; -----------------------------------------------------------------------------
	2075	; MBR BACKUP
	2076	; -----------------------------------------------------------------------------
[37]	2077
[45]	2078	;
	2079	; AiR-BOOT MBR Backup.
	2080	;
[52]	2081	; BOOKMARK: MBR Backup
[45]	2082	ORIGIN % (image_size - 200h)
[37]	2083
[31]	2084
[46]	2085	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp',\
	2086	' - Just to fill this sector with something',0
[37]	2087	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	2088
[45]	2089	db (512 - ($-MBR_BackUpMBR) - 2) dup('M')
[36]	2090
[45]	2091	; End of Image signature.
	2092	;
	2093	ORIGIN % (image_size - 2)
	2094	dw 0BABEh
[30]	2095
	2096
[45]	2097	;
	2098	; End of Image.
	2099	;
	2100	ORIGIN % (image_size)
[30]	2101
	2102
[51]	2103
[30]	2104	;
[51]	2105	; Terminate LDRIMAGE segment.
[30]	2106	;
[51]	2107	IFDEF SEGMENTED
[43]	2108	LDRIMAGE ENDS
[51]	2109	ENDIF
[30]	2110
[37]	2111
[51]	2112
	2113
	2114
	2115
	2116
	2117	;##############################################################################
	2118	; BSS SEGMENT
	2119	;##############################################################################
	2120
[52]	2121	; BOOKMARK: BSS Segment
[51]	2122
[30]	2123	;
[51]	2124	; Open BSS segment.
[30]	2125	;
[51]	2126	IFDEF SEGMENTED
[37]	2127	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
	2128	ENDIF
	2129
[46]	2130
	2131
[30]	2132	sobss:
[31]	2133	;------------------------------------------------------------------------------
[46]	2134
[37]	2135	;
[46]	2136	; Removed ORG for BSS data to be more compatible
[38]	2137	; with segment-concatenated layout.
[37]	2138	;
[42]	2139	; What happens before this space ??
	2140	; If org 0 corruption occurs.
[46]	2141	;
	2142
	2143	;
[45]	2144	; Filling hiddenparttable goes out-of-bounds !
[46]	2145	; Fixed with 6-bit packing.
[42]	2146	;
[37]	2147
[46]	2148	;
	2149	; If segmented, offsets are relative to the BSS segment.
	2150	; They are resolved at link-time.
	2151	; If not segmented, offsets are relative to the CODE segment.
	2152	;
	2153	IFDEF SEGMENTED
	2154	ORG 02400h
	2155	ELSE
	2156	ORG 0A000h
	2157	ENDIF
	2158
	2159
[51]	2160	; -----------------------------------------------------------------------------
	2161	; START OF BSS DATA
	2162	; -----------------------------------------------------------------------------
	2163
[7]	2164	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	2165	BeginOfVariables:
[51]	2166
	2167
	2168	; -----------------------------------------------------------------------------
	2169	; SECTOR BUFFERS
	2170	; -----------------------------------------------------------------------------
[52]	2171	; BOOKMARK: Sector Buffers
[46]	2172	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
[51]	2173	PBRSector db 512 dup (?) ; Temporary Sector for JFS/HPFS writeback
[46]	2174	LVMSector db 512 dup (?) ; Temporary Sector for LVM
	2175	TmpSector db 512 dup (?) ; Temporary Sector
	2176	Scratch db 256 dup (?) ; Scratch buffer
[30]	2177
[51]	2178	; -----------------------------------------------------------------------------
	2179	; NEW PARTITION TABLE
	2180	; -----------------------------------------------------------------------------
[7]	2181	; Everything used to build a new IPT and reference it to the old one
[52]	2182	; BOOKMARK: New Partition Table
[46]	2183	NewPartTable db 1536 dup (?) ; New Partition Table
[43]	2184
[51]	2185
	2186	; -----------------------------------------------------------------------------
	2187	; NEW HIDE PARTITION TABLE
	2188	; -----------------------------------------------------------------------------
[52]	2189	; BOOKMARK: New Hide-Partition Table
[51]	2190	NewHidePartTable db LocIPT_MaxPartitions * LocHPT_LenOfHPT dup (?)
[7]	2191
[51]	2192	;~ even
	2193
	2194	; -----------------------------------------------------------------------------
	2195	; NEW DRIVE LETTERS
	2196	; -----------------------------------------------------------------------------
[52]	2197	; BOOKMARK: Logical Drive-Letters
[51]	2198	NewDriveLetters db LocIPT_MaxPartitions dup (?)
[7]	2199
[51]	2200	;~ even
	2201
	2202	; -----------------------------------------------------------------------------
	2203	; PARTITION SIZE TABLE
	2204	; -----------------------------------------------------------------------------
[46]	2205	; Size-Table (6 bytes per partition)
[52]	2206	; BOOKMARK: Partition Size Table
[51]	2207	PartitionSizeTable db LocIPT_MaxPartitions * 6 dup (?)
[46]	2208
[51]	2209
	2210	; -----------------------------------------------------------------------------
	2211	; PARTITION POINTERS
	2212	; -----------------------------------------------------------------------------
[49]	2213	; Maximum is 52 word entries till now
[52]	2214	; BOOKMARK: Partition Pointers
[46]	2215	PartitionPointers dw 52 dup (?)
	2216
	2217	; Count of total Partition Pointers
	2218	PartitionPointerCount db ?
	2219
[51]	2220	; -----------------------------------------------------------------------------
	2221	; XREF TABLE
	2222	; -----------------------------------------------------------------------------
	2223
[46]	2224	; X-Reference Table (holds new partnr, index is old part nr)
[52]	2225	; BOOKMARK: Xref Table
[51]	2226	PartitionXref db LocIPT_MaxPartitions dup (?)
[46]	2227
[51]	2228	; -----------------------------------------------------------------------------
	2229	; VOLUME LETTERS
	2230	; -----------------------------------------------------------------------------
	2231
[46]	2232	; Volume-Letters
	2233	; 0 - no LVM support
	2234	; 1 - LVM support, but no letter
	2235	; 'C'-'Z' - assigned drive letter
[52]	2236	; BOOKMARK: Volume Drive Letters
[51]	2237	PartitionVolumeLetters db LocIPT_MaxPartitions dup (?)
[46]	2238
	2239
	2240
[51]	2241	; -----------------------------------------------------------------------------
	2242	; MISC VARS AND FLAGS
	2243	; -----------------------------------------------------------------------------
[52]	2244	; BOOKMARK: Misc Vars and Flags
[46]	2245	TotalHarddiscs db ? ; Total harddrives (by POST)
	2246	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	2247	NewPartitions db ? ; Freshly found partitions
[37]	2248	; Independent of SaveConfiguration
[46]	2249	TooManyPartitions db ? ; Non-zero if too many partitions found
[7]	2250
[46]	2251	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	2252
[46]	2253	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	2254	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	2255
[46]	2256	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
	2257	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	2258	; (filled out by PreCrap)
	2259	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
[37]	2260	; (for detailed error message)
[7]	2261
[29]	2262	; [Linux support removed since v1.02]
	2263	;GotLinux db ? ; 1-Linux found
[7]	2264
[51]	2265
	2266	; -----------------------------------------------------------------------------
	2267	; MENU RELATED VARS
	2268	; -----------------------------------------------------------------------------
[46]	2269	Menu_EntrySelected db ? ; Which partition we boot this time...
	2270	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	2271	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	2272	Menu_TotalParts db ? ; Copy of CFG_BootParts
	2273	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	2274	Menu_EntryDefault db ? ; Default Entry in filtered View
	2275	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	2276	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
[7]	2277	; - All adjusted to menu locations
	2278
[51]	2279	; -----------------------------------------------------------------------------
	2280	; PARTITION RELATED VARS
	2281	; -----------------------------------------------------------------------------
[46]	2282	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	2283	PartSetup_ActivePart db ? ; Active Partition
	2284	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	2285	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	2286	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
[7]	2287
[51]	2288	; -----------------------------------------------------------------------------
	2289	; TIMER / SETUP RELATED VARS
	2290	; -----------------------------------------------------------------------------
[46]	2291	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	2292	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here;)
	2293	TimedSecondLeft db ? ; How many seconds are left till boom ?
	2294	TimedSecondBack db ? ; To get a modification noticed
	2295	TimedBootUsed db ? ; Timed Boot used for bootup ?
	2296	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	2297	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	2298	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	2299	TempPasswordEntry db 17 dup (?)
	2300	SETUP_OldPwd db 17 dup (?)
	2301	SETUP_NewPwd db 17 dup (?)
	2302	SETUP_VerifyPwd db 17 dup (?)
	2303	StartSoundPlayed db ?
	2304	ChangePartNameSave db ? ; Save label after user-edit ?
	2305	SyncLvmLabels db ? ; Sync LVM labels after user-edit ?
[7]	2306
[51]	2307
	2308	; -----------------------------------------------------------------------------
	2309	; FX RELATED VARS
	2310	; -----------------------------------------------------------------------------
[37]	2311	FX_UseCount dw ?
	2312	FX_OverallTimer dw ?
	2313	FX_WideScrollerTimer dw ?
	2314	FX_WideScrollerCurPos dw ?
	2315	FX_WideScrollerSpeed db ?
	2316	FX_WideScrollerSpeedState db ?
	2317	FX_WideScrollerDirection db ?
	2318	FX_WideScrollerAbsDirection db ?
	2319	FX_WideScrollerBounceSpeed db ?
	2320	FX_CooperBarsTimer dw ?
[7]	2321
[51]	2322	; Dynamically Generated Tables - do not need to get initialized with NUL
	2323	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	2324	FX_CooperState db 7 dup (?)
	2325	FX_SinusPos db 7 dup (?)
	2326	FX_CooperPos dw 7 dup (?)
	2327
	2328
	2329	; -----------------------------------------------------------------------------
	2330	; CHARSET BUFFER
	2331	; -----------------------------------------------------------------------------
	2332	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
	2333
	2334	; -----------------------------------------------------------------------------
	2335	; LVM CRC TABLE
	2336	; -----------------------------------------------------------------------------
	2337	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
	2338
[46]	2339	;~ ; [Linux support removed since v1.02]
	2340	;~ FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	2341	;~ FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	2342	;~ FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	2343	;~ FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	2344	;~ FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	2345	;~ FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	2346	;~ FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	2347	;~ FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	2348	;~ FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	2349	;~ FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	2350	;~ LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	2351	;~ LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	2352	;~ LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[7]	2353
	2354
[30]	2355	;
	2356	; Rousseau: added some stuff.
	2357	;
[51]	2358	; -----------------------------------------------------------------------------
	2359	; ECS PHASE1 RELATED
	2360	; -----------------------------------------------------------------------------
[49]	2361	Phase1Active db ?
	2362	OldPartitionCount db ?
[30]	2363
[51]	2364
	2365	; -----------------------------------------------------------------------------
	2366	; DISK PARAMETERS
	2367	; -----------------------------------------------------------------------------
[30]	2368	;EVEN
[37]	2369	HugeDisk db MaxDisks dup(?)
	2370	TrueSecs dd MaxDisks dup(?)
[30]	2371
	2372	; BIOS geometry of the boot-drive
	2373	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	2374	; If Int13X is supported those values are used, otherwise the legacy values.
[37]	2375	BIOS_Cyls dd MaxDisks dup(?)
	2376	BIOS_Heads dd MaxDisks dup(?)
	2377	BIOS_Secs dd MaxDisks dup(?)
	2378	BIOS_Bytes dw MaxDisks dup(?)
	2379	BIOS_TotalSecs dq MaxDisks dup(?)
[30]	2380
	2381	; LBA geometry of the boot-drive
	2382	; Note that these values are taken from the BPB of a partition boot-record
[37]	2383	LVM_Cyls dd MaxDisks dup(?)
	2384	LVM_Heads dd MaxDisks dup(?)
	2385	LVM_Secs dd MaxDisks dup(?)
	2386	LVM_Bytes dw MaxDisks dup(?)
	2387	LVM_TotalSecs dq MaxDisks dup(?)
[30]	2388
	2389	; OS/2 geometry of the boot-drive
	2390	; Note that these values are taken from the BPB of a partition boot-record
[37]	2391	LOG_Cyls dd MaxDisks dup(?)
	2392	LOG_Heads dd MaxDisks dup(?)
	2393	LOG_Secs dd MaxDisks dup(?)
	2394	LOG_Bytes dw MaxDisks dup(?)
	2395	LOG_TotalSecs dq MaxDisks dup(?)
[30]	2396
[51]	2397	; Get's initialized at startup to: 00000011111111111111111111111100b
	2398	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	2399	; Each partition with an assigned drive-letter clears a bit in this map.
	2400	FreeDriveletterMap dd ?
[30]	2401
[51]	2402	; LBA address of master LVM sector, zero if non-existant
	2403	MasterLVMLBA dd ?
[30]	2404
[51]	2405
	2406	; -----------------------------------------------------------------------------
	2407	; I13X BUFFER
	2408	; -----------------------------------------------------------------------------
[46]	2409	;
[52]	2410	; BOOKMARK: Temporary buffer for 48h INT13X bios call.
[46]	2411	;
[30]	2412
[46]	2413	; Size of the buffer.
	2414	; this param must be filled in.
	2415	; Code inserts it.
	2416	i13xbuf dw 1 dup (?)
[30]	2417
[46]	2418	; The buffer itself.
	2419	db 126 dup(?)
	2420
	2421	; Size of buffer calculated.
	2422	; (excluding the size word at the start).
	2423	i13xbuf_size = $-offset i13xbuf-2
	2424
	2425	; Some debug area.
[44]	2426	ott db 512 dup(?)
	2427
[51]	2428
	2429	; End of transient variables.
	2430	EndOfVariables:
	2431
	2432
	2433
	2434
	2435	; -----------------------------------------------------------------------------
	2436	; OLD AND NEW STACKS
	2437	; -----------------------------------------------------------------------------
[52]	2438	; BOOKMARK: Storage for Old and New Stack Pointers
[51]	2439	;
	2440	; These need to be outside the variable section because AiR-BOOT can restart
	2441	; itself in debug-mode. If the OldSP and OldSS would be in the variable area,
	2442	; they would be cleared on AiR-BOOT restart.
	2443	;
	2444
	2445	; The variable section is cleared word-wise, so it could clear one byte extra
	2446	; depending on the alignment and size. This DD prevents the OldSP and OldSS
	2447	; to be partly overwritten by the clearing routine.
	2448	dd ?
	2449
	2450	; SS:SP from before our relocation.
	2451	; The registers values when the BIOS transferred control to us were pushed
	2452	; on this stack.
	2453
	2454	OldSP dw ?
	2455	OldSS dw ?
	2456
	2457	; SS:SP currently in use.
	2458	; They are temporarily dumped here so we can pop the resgisters from
	2459	; the old stack to display them in debug mode.
	2460	CurrentSP dw ?
	2461	CurrentSS dw ?
	2462
	2463
	2464
	2465	;
	2466	; End of BSS segment.
	2467	;
[30]	2468	eobss:
	2469
[51]	2470	;
	2471	; Close BSS segment.
	2472	;
[37]	2473	IFDEF SEGMENTED
[46]	2474	VOLATILE ENDS
[37]	2475	ELSE
[46]	2476	LDRIMAGE ENDS
[37]	2477	ENDIF
[43]	2478
[52]	2479	; BOOKMARK: End of Module
[45]	2480	END AiR_BOOT
[30]	2481

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

Context Navigation

source: trunk/bootcode/airboot.asm@ 72

Download in other formats: