WebSVN – Kolibri OS – Blame – /kernel/trunk/boot/bootcode.inc

Rev	Author	Line No.	Line
2288	clevermous	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
2455	mario79	3	;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
2288	clevermous	4	;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
		5	;; Distributed under terms of the GNU General Public License ;;
		6	;; ;;
		7	;; BOOTCODE.INC ;;
		8	;; ;;
		9	;; KolibriOS 16-bit loader, ;;
		10	;; based on bootcode for MenuetOS ;;
		11	;; ;;
		12	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		13
		14	$Revision: 3712 $
		15
		16
		17	;==========================================================================
		18	;
		19	; 16 BIT FUNCTIONS
		20	;
		21	;==========================================================================
		22
		23
		24	putchar:
		25	; in: al=character
		26	mov ah, 0Eh
		27	mov bh, 0
		28	int 10h
		29	ret
		30
		31	print:
		32	; in: si->string
		33	mov al, 186
		34	call putchar
		35	mov al, ' '
		36	call putchar
		37
		38	printplain:
		39	; in: si->string
		40	pusha
		41	lodsb
		42	@@:
		43	call putchar
		44	lodsb
		45	test al, al
		46	jnz @b
		47	popa
		48	ret
		49
		50	getkey:
		51	; get number in range [bl,bh] (bl,bh in ['0'..'9'])
		52	; in: bx=range
		53	; out: ax=digit (1..9, 10 for 0)
		54	mov ah, 0
		55	int 16h
		56	cmp al, bl
		57	jb getkey
		58	cmp al, bh
		59	ja getkey
		60	push ax
		61	call putchar
		62	pop ax
		63	and ax, 0Fh
		64	jnz @f
		65	mov al, 10
		66	@@:
		67	ret
		68
		69	setcursor:
		70	; in: dl=column, dh=row
		71	mov ah, 2
		72	mov bh, 0
		73	int 10h
		74	ret
		75
		76	macro _setcursor row,column
		77	{
		78	mov dx, row*256 + column
		79	call setcursor
		80	}
		81
		82	boot_read_floppy:
		83	push si
		84	xor si, si
		85	mov ah, 2 ; read
		86	@@:
		87	push ax
		88	int 0x13
		89	pop ax
		90	jnc @f
		91	inc si
		92	cmp si, 10
		93	jb @b
		94	sayerr_badsect:
		95	mov si, badsect
		96	sayerr_plain:
		97	call printplain
		98	jmp $
		99	@@:
		100	pop si
		101	ret
		102
		103	; convert abs. sector number (AX) to BIOS T:H:S
		104	; sector number = (abs.sector%BPB_SecPerTrk)+1
		105	; pre.track number = (abs.sector/BPB_SecPerTrk)
		106	; head number = pre.track number%BPB_NumHeads
		107	; track number = pre.track number/BPB_NumHeads
		108	; Return: cl - sector number
		109	; ch - track number
		110	; dl - drive number (0 = a:)
		111	; dh - head number
		112	conv_abs_to_THS:
		113	push bx
		114	mov bx, word [BPB_SecPerTrk]
		115	xor dx, dx
		116	div bx
		117	inc dx
		118	mov cl, dl ; cl = sector number
		119	mov bx, word [BPB_NumHeads]
		120	xor dx, dx
		121	div bx
		122	; !!!!!!! ax = track number, dx = head number
		123	mov ch, al ; ch=track number
		124	xchg dh, dl ; dh=head number
		125	mov dl, 0 ; dl=0 (drive 0 (a:))
		126	pop bx
		127	retn
		128	; needed variables
		129	BPB_SecPerTrk dw 0 ; sectors per track
		130	BPB_NumHeads dw 0 ; number of heads
		131	BPB_FATSz16 dw 0 ; size of FAT
		132	BPB_RootEntCnt dw 0 ; count of root dir. entries
		133	BPB_BytsPerSec dw 0 ; bytes per sector
		134	BPB_RsvdSecCnt dw 0 ; number of reserved sectors
		135	BPB_TotSec16 dw 0 ; count of the sectors on the volume
		136	BPB_SecPerClus db 0 ; number of sectors per cluster
		137	BPB_NumFATs db 0 ; number of FAT tables
		138	abs_sector_adj dw 0 ; adjustment to make abs. sector number
		139	end_of_FAT dw 0 ; end of FAT table
		140	FirstDataSector dw 0 ; begin of data
		141
		142	;=========================================================================
		143	;
		144	; 16 BIT CODE
		145	;
		146	;=========================================================================
		147
		148	include 'bootvesa.inc' ;Include source for boot vesa
		149	if defined extended_primary_loader
		150	include 'parsers.inc'
		151	end if
		152
		153	start_of_code:
		154
		155	if defined extended_primary_loader
		156	; save data from primary loader
		157	mov word [cs:bootcallback], si
		158	mov word [cs:bootcallback+2], ds
		159	push cs
		160	pop ds
		161	mov [bootdevice], ax
		162	mov [bootfs], bx
		163
		164	; set up stack
		165	mov ax, 3000h
		166	mov ss, ax
		167	mov sp, 0EC00h
		168
		169	; try to load configuration file
		170	mov ax, 1
		171	mov di, config_file_struct
		172	call [bootcallback]
		173	cld
		174	push cs
		175	pop es
		176	; bx=0 - ok, bx=1 - part of file loaded, assume this is ok
		177	cmp bx, 1
		178	ja .config_bad
		179	; configuration file was loaded, parse
		180	; if length is too big, use first 0FFFFh bytes
		181	test dx, dx
		182	jz @f
		183	mov ax, 0FFFFh
		184	@@:
		185	; ds:si will be pointer to current data, dx = limit
		186	xchg ax, dx
		187	push 4000h
		188	pop ds
		189	xor si, si
		190	.parse_loop:
		191	; skip spaces
		192	cmp si, dx
		193	jae .parse_done
		194	lodsb
		195	cmp al, ' '
		196	jbe .parse_loop
		197	dec si
		198	; loop over all possible configuration values
		199	mov bx, config_file_variables
		200	.find_variant:
		201	; get length
		202	mov cx, [es:bx]
		203	; zero length = end of list
		204	jecxz .find_newline
		205	; skip over length
		206	inc bx
		207	inc bx
		208	mov di, bx
		209	; skip over string
		210	add bx, cx
		211	; test whether we have at least cx symbols left
		212	mov ax, cx
		213	add ax, si
		214	jc .next_variant1
		215	cmp ax, dx
		216	jae .next_variant1
		217	; save current position
		218	push si
		219	; compare strings
		220	repz cmpsb
		221	jnz .next_variant2
		222	; strings are equal; look for "=" with possible spaces before and after
		223	@@:
		224	cmp si, dx
		225	jae .next_variant2
		226	lodsb
		227	cmp al, ' '
		228	jbe @b
		229	cmp al, '='
		230	jnz .next_variant2
		231	; ok, we found the true variant
		232	; ignore saved position on the stack
		233	pop ax
		234	; call the parser
		235	call word [es:bx]
		236	; line parsed, find next
		237	.find_newline:
		238	cmp si, dx
		239	jae .parse_done
		240	lodsb
		241	cmp al, 13
		242	jz .parse_loop
		243	cmp al, 10
		244	jz .parse_loop
		245	jmp .find_newline
		246	.next_variant2:
		247	; continue to the next variant, restoring current position
		248	pop si
		249	.next_variant1:
		250	; continue to the next variant
		251	; skip over the parser
		252	inc bx
		253	inc bx
		254	jmp .find_variant
		255	.parse_done:
		256	.config_bad:
		257
		258	; set up segment registers
		259	push cs
		260	pop ds
		261	else
		262	cld
		263	; \begin{diamond}[02.12.2005]
		264	; if bootloader sets ax = 'KL', then ds:si points to loader block
		265	cmp ax, 'KL'
		266	jnz @f
		267	mov word [cs:cfgmanager.loader_block], si
		268	mov word [cs:cfgmanager.loader_block+2], ds
		269	@@:
		270	; \end{diamond}[02.12.2005]
		271
		272	; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source hard disk
		273	; (see comment to bx_from_load)
		274	cmp cx, 'HA'
		275	jnz no_hd_load
		276	cmp dx, 'RD'
		277	jnz no_hd_load
		278	mov word [cs:bx_from_load], bx ; {SPraid}[13.03.2007]
		279	no_hd_load:
		280
		281	; set up stack
		282	mov ax, 3000h
		283	mov ss, ax
		284	mov sp, 0EC00h
		285	; set up segment registers
		286	push cs
		287	pop ds
		288	push cs
		289	pop es
		290	end if
		291
		292	; set videomode
		293	mov ax, 3
		294	int 0x10
		295
		296	if lang eq ru
		297	; Load & set russian VGA font (RU.INC)
		298	mov bp, RU_FNT1 ; RU_FNT1 - First part
		299	mov bx, 1000h ; 768 bytes
		300	mov cx, 30h ; 48 symbols
		301	mov dx, 80h ; 128 - position of first symbol
		302	mov ax, 1100h
		303	int 10h
		304
		305	mov bp, RU_FNT2 ; RU_FNT2 -Second part
		306	mov bx, 1000h ; 512 bytes
		307	mov cx, 20h ; 32 symbols
		308	mov dx, 0E0h ; 224 - position of first symbol
		309	mov ax, 1100h
		310	int 10h
		311	; End set VGA russian font
		312	else if lang eq et
		313	mov bp, ET_FNT ; ET_FNT1
		314	mov bx, 1000h ;
		315	mov cx, 255 ; 256 symbols
		316	xor dx, dx ; 0 - position of first symbol
		317	mov ax, 1100h
		318	int 10h
		319	end if
		320
		321	; draw frames
		322	push 0xb800
		323	pop es
		324	xor di, di
		325	mov ah, 1*16+15
		326
		327	; draw top
		328	mov si, d80x25_top
		329	mov cx, d80x25_top_num * 80
		330	@@:
		331	lodsb
		332	stosw
		333	loop @b
		334	; draw spaces
		335	mov si, space_msg
		336	mov dx, 25 - d80x25_top_num - d80x25_bottom_num
		337	dfl1:
		338	push si
		339	mov cx, 80
		340	@@:
		341	lodsb
		342	stosw
		343	loop @b
		344	pop si
		345	dec dx
		346	jnz dfl1
		347	; draw bottom
		348	mov si, d80x25_bottom
		349	mov cx, d80x25_bottom_num * 80
		350	@@:
		351	lodsb
		352	stosw
		353	loop @b
		354
		355	mov byte [space_msg+80], 0 ; now space_msg is null terminated
		356
		357	_setcursor d80x25_top_num,0
		358
		359
		360	; TEST FOR 386+
		361
		362	mov bx, 0x4000
		363	pushf
		364	pop ax
		365	mov dx, ax
		366	xor ax, bx
		367	push ax
		368	popf
		369	pushf
		370	pop ax
		371	and ax, bx
		372	and dx, bx
		373	cmp ax, dx
		374	jnz cpugood
		375	mov si, not386
		376	sayerr:
		377	call print
		378	jmp $
		379	cpugood:
		380
		381	push 0
		382	popf
		383	sti
		384
		385	; set up esp
		386	movzx esp, sp
		387
		388	push 0
		389	pop es
3711	clevermous	390	xor ax, ax
		391	and word [es:BOOT_IDE_BASE_ADDR], ax ;0
		392	and word [es:BOOT_IDE_BAR0_16], ax ;0
		393	and word [es:BOOT_IDE_BAR1_16], ax ;0
		394	and word [es:BOOT_IDE_BAR2_16], ax ;0
		395	and word [es:BOOT_IDE_BAR3_16], ax ;0
2288	clevermous	396	; \begin{Mario79}
		397	; find HDD IDE DMA PCI device
		398	; check for PCI BIOS
		399	mov ax, 0xB101
		400	int 0x1A
		401	jc .nopci
		402	cmp edx, 'PCI '
		403	jnz .nopci
		404	; find PCI class code
		405	; class 1 = mass storage
		406	; subclass 1 = IDE controller
		407	; a) class 1, subclass 1, programming interface 0x80
3712	mario79	408	; This is a Parallel IDE Controller which uses IRQs 14 and 15.
2288	clevermous	409	mov ax, 0xB103
		410	mov ecx, 110000h + 1100h + 0x80
3702	mario79	411	mov [es:BOOT_IDE_PI_16], cx
2288	clevermous	412	xor si, si ; device index = 0
		413	int 0x1A
3712	mario79	414	jnc .found_1 ; Parallel IDE Controller
3702	mario79	415	; b) class 1, subclass 1, programming interface 0x8f
2288	clevermous	416	mov ax, 0xB103
3702	mario79	417	mov ecx, 110000h + 1100h + 0x8f
		418	mov [es:BOOT_IDE_PI_16], cx
2288	clevermous	419	xor si, si ; device index = 0
		420	int 0x1A
		421	jnc .found
		422	; c) class 1, subclass 1, programming interface 0x85
		423	mov ax, 0xB103
		424	mov ecx, 110000h + 1100h + 0x85
3702	mario79	425	mov [es:BOOT_IDE_PI_16], cx
		426	xor si, si ; device index = 0
2288	clevermous	427	int 0x1A
3702	mario79	428	jnc .found
		429	; d) class 1, subclass 1, programming interface 0x8A
3712	mario79	430	; This is a Parallel IDE Controller which uses IRQs 14 and 15.
3702	mario79	431	mov ax, 0xB103
		432	mov ecx, 110000h + 1100h + 0x8A
		433	mov [es:BOOT_IDE_PI_16], cx
		434	xor si, si ; device index = 0
		435	int 0x1A
3712	mario79	436	jnc .found_1 ; Parallel IDE Controller
3702	mario79	437
3711	clevermous	438	jmp .nopci
3702	mario79	439	.found_1:
		440	; get memory base BAR4
2288	clevermous	441	mov ax, 0xB10A
		442	mov di, 0x20 ; memory base is config register at 0x20
3711	clevermous	443	push cx
2288	clevermous	444	int 0x1A
3711	clevermous	445	jc .no_BAR4 ;.nopci
2288	clevermous	446	and cx, 0xFFF0 ; clear address decode type
2466	Serge	447	mov [es:BOOT_IDE_BASE_ADDR], cx
3702	mario79	448	.no_BAR4:
3711	clevermous	449	pop cx
		450	.found:
3702	mario79	451	; get memory base BAR0
		452	mov ax, 0xB10A
3712	mario79	453	mov di, 0x10 ; memory base is config register at 0x10
3711	clevermous	454	push cx
3702	mario79	455	int 0x1A
3711	clevermous	456	jc .no_BAR0 ;.nopci
3702	mario79	457	mov [es:BOOT_IDE_BAR0_16], cx
		458	.no_BAR0:
3711	clevermous	459	pop cx
3702	mario79	460	; get memory base BAR1
		461	mov ax, 0xB10A
3712	mario79	462	mov di, 0x14 ; memory base is config register at 0x14
3711	clevermous	463	push cx
3702	mario79	464	int 0x1A
3711	clevermous	465	jc .no_BAR1 ;.nopci
3702	mario79	466	mov [es:BOOT_IDE_BAR1_16], cx
		467	.no_BAR1:
3711	clevermous	468	pop cx
3702	mario79	469	; get memory base BAR2
		470	mov ax, 0xB10A
3712	mario79	471	mov di, 0x18 ; memory base is config register at 0x18
3711	clevermous	472	push cx
3702	mario79	473	int 0x1A
3711	clevermous	474	jc .no_BAR2 ;.nopci
3702	mario79	475	mov [es:BOOT_IDE_BAR2_16], cx
		476	.no_BAR2:
3711	clevermous	477	pop cx
3702	mario79	478	; get memory base BAR3
		479	mov ax, 0xB10A
3712	mario79	480	mov di, 0x1C ; memory base is config register at 0x1c
3711	clevermous	481	push cx
3702	mario79	482	int 0x1A
3711	clevermous	483	jc .no_BAR3 ;.nopci
3702	mario79	484	mov [es:BOOT_IDE_BAR3_16], cx
		485	.no_BAR3:
3711	clevermous	486	pop cx
2288	clevermous	487	.nopci:
		488	; \end{Mario79}
		489
3539	clevermous	490	mov al, 0xf6 ; Сброс клавиатуры, разрешить сканирование
2288	clevermous	491	out 0x60, al
		492	xor cx, cx
		493	wait_loop: ; variant 2
		494	; reading state of port of 8042 controller
		495	in al, 64h
		496	and al, 00000010b ; ready flag
		497	; wait until 8042 controller is ready
		498	loopnz wait_loop
		499
		500	;;;/diamond today 5.02.2008
		501	; set keyboard typematic rate & delay
		502	mov al, 0xf3
		503	out 0x60, al
		504	xor cx, cx
		505	@@:
		506	in al, 64h
		507	test al, 2
		508	loopnz @b
		509	mov al, 0
		510	out 0x60, al
		511	xor cx, cx
		512	@@:
		513	in al, 64h
		514	test al, 2
		515	loopnz @b
		516	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		517	; --------------- APM ---------------------
2466	Serge	518	and word [es:BOOT_APM_VERSION], 0 ; ver = 0.0 (APM not found)
2288	clevermous	519	mov ax, 0x5300
		520	xor bx, bx
		521	int 0x15
		522	jc apm_end ; APM not found
		523	test cx, 2
		524	jz apm_end ; APM 32-bit protected-mode interface not supported
2466	Serge	525	mov [es:BOOT_APM_VERSION], ax ; Save APM Version
		526	mov [es:BOOT_APM_FLAGS], cx ; Save APM flags
2288	clevermous	527
		528	; Write APM ver ----
		529	and ax, 0xf0f
		530	add ax, '00'
		531	mov si, msg_apm
		532	mov [si + 5], ah
		533	mov [si + 7], al
		534	_setcursor 0, 3
		535	call printplain
		536	; ------------------
		537
		538	mov ax, 0x5304 ; Disconnect interface
		539	xor bx, bx
		540	int 0x15
		541	mov ax, 0x5303 ; Connect 32 bit mode interface
		542	xor bx, bx
		543	int 0x15
		544
2466	Serge	545	mov [es:BOOT_APM_ENTRY], ebx
		546	mov [es:BOOT_APM_CODE_32], ax
		547	mov [es:BOOT_APM_CODE_16], cx
		548	mov [es:BOOT_APM_DATA_16], dx
2288	clevermous	549
		550	apm_end:
		551	_setcursor d80x25_top_num, 0
		552
		553	if ~ defined extended_primary_loader
		554	;CHECK current of code
		555	cmp [cfgmanager.loader_block], -1
		556	jz noloaderblock
		557	les bx, [cfgmanager.loader_block]
		558	cmp byte [es:bx], 1
		559	mov si, loader_block_error
		560	jnz sayerr
		561	push 0
		562	pop es
		563	end if
		564
		565	noloaderblock:
		566	; DISPLAY VESA INFORMATION
		567	call print_vesa_info
		568	call calc_vmodes_table
		569	call check_first_parm ;check and enable cursor_pos
		570
		571	; \begin{diamond}[30.11.2005]
		572	cfgmanager:
		573	; settings:
		574	; a) preboot_graph = graphical mode
		575	; preboot_gprobe = probe this mode?
		576	; b) preboot_dma = use DMA access?
		577	; c) preboot_vrrm = use VRR?
		578	; d) preboot_device = from what boot?
		579
		580	; determine default settings
		581	if ~ defined extended_primary_loader
		582	mov [.bSettingsChanged], 0
		583	end if
		584
		585	;.preboot_gr_end:
		586	mov di, preboot_device
		587	; if image in memory is present and [preboot_device] is uninitialized,
		588	; set it to use this preloaded image
		589	cmp byte [di], 0
		590	jnz .preboot_device_inited
		591	if defined extended_primary_loader
		592	inc byte [di]
		593	cmp byte [bootdevice], 'f' ; floppy?
		594	jz .preboot_device_inited
		595	inc byte [di]
		596	else
		597	cmp [.loader_block], -1
		598	jz @f
		599	les bx, [.loader_block]
		600	test byte [es:bx+1], 1
		601	jz @f
		602	mov byte [di], 3
		603	jmp .preboot_device_inited
		604	@@:
		605	; otherwise, set [preboot_device] to 1 (default value - boot from floppy)
		606	mov byte [di], 1
		607	end if
		608	.preboot_device_inited:
		609	; following 4 lines set variables to 1 if its current value is 0
		610	cmp byte [di+preboot_dma-preboot_device], 1
		611	adc byte [di+preboot_dma-preboot_device], 0
3702	mario79	612	; cmp byte [di+preboot_biosdisk-preboot_device], 1
		613	; adc byte [di+preboot_biosdisk-preboot_device], 0
2288	clevermous	614	;; default value for VRR is OFF
		615	; cmp byte [di+preboot_vrrm-preboot_device], 0
		616	; jnz @f
		617	; mov byte [di+preboot_vrrm-preboot_device], 2
		618	;@@:
		619	; notify user
		620	_setcursor 5,2
		621
		622	mov si, linef
		623	call printplain
		624	mov si, start_msg
		625	call print
		626	mov si, time_msg
		627	call print
		628	; get start time
		629	call .gettime
		630	mov [.starttime], eax
		631	mov word [.timer], .newtimer
		632	mov word [.timer+2], cs
		633	.printcfg:
		634
		635	_setcursor 9,0
		636	mov si, current_cfg_msg
		637	call print
		638	mov si, curvideo_msg
		639	call print
		640
		641	call draw_current_vmode
		642
		643	mov si, usebd_msg
		644	cmp [preboot_biosdisk], 1
		645	call .say_on_off
		646	; mov si, vrrm_msg
		647	; cmp [preboot_vrrm], 1
		648	; call .say_on_off
		649	mov si, preboot_device_msg
		650	call print
		651	mov al, [preboot_device]
		652	if defined extended_primary_loader
		653	and eax, 3
		654	else
		655	and eax, 7
		656	end if
		657	mov si, [preboot_device_msgs+eax*2]
		658	call printplain
		659	.show_remarks:
		660	; show remarks in gray color
		661	mov di, ((21-num_remarks)80 + 2)2
		662	push 0xB800
		663	pop es
		664	mov cx, num_remarks
		665	mov si, remarks
		666	.write_remarks:
		667	lodsw
		668	push si
		669	xchg ax, si
		670	mov ah, 1*16+7 ; background: blue (1), foreground: gray (7)
		671	push di
		672	.write_remark:
		673	lodsb
		674	test al, al
		675	jz @f
		676	stosw
		677	jmp .write_remark
		678	@@:
		679	pop di
		680	pop si
		681	add di, 80*2
		682	loop .write_remarks
		683	.wait:
		684	_setcursor 25,0 ; out of screen
		685	; set timer interrupt handler
		686	cli
		687	push 0
		688	pop es
		689	push dword [es:8*4]
		690	pop dword [.oldtimer]
		691	push dword [.timer]
		692	pop dword [es:8*4]
		693	; mov eax, [es:8*4]
		694	; mov [.oldtimer], eax
		695	; mov eax, [.timer]
		696	; mov [es:8*4], eax
		697	sti
		698	; wait for keypressed
		699	xor ax, ax
		700	int 16h
		701	push ax
		702	; restore timer interrupt
		703	; push 0
		704	; pop es
		705	mov eax, [.oldtimer]
		706	mov [es:8*4], eax
		707	mov [.timer], eax
		708
		709	_setcursor 7,0
		710	mov si, space_msg
		711	call printplain
		712	; clear remarks and restore normal attributes
		713	push es
		714	mov di, ((21-num_remarks)80 + 2)2
		715	push 0xB800
		716	pop es
		717	mov cx, num_remarks
		718	mov ax, ' ' + (116 + 15)100h
		719	@@:
		720	push cx
		721	mov cx, 76
		722	rep stosw
		723	pop cx
		724	add di, 4*2
		725	loop @b
		726	pop es
		727	pop ax
		728	; switch on key
		729	cmp al, 13
		730	jz .continue
		731	or al, 20h
		732	cmp al, 'a'
		733	jz .change_a
		734	cmp al, 'b'
		735	jz .change_b
		736	; cmp al, 'c'
		737	; jz .change_c
		738	cmp al, 'c' ; 'd'
		739	jnz .show_remarks
		740	_setcursor 15,0
		741	mov si, bdev
		742	call print
		743	if defined extended_primary_loader
		744	mov bx, '12'
		745	else
		746	mov bx, '14'
		747	end if
		748	call getkey
		749	mov [preboot_device], al
		750	_setcursor 13,0
		751	.d:
		752	if ~ defined extended_primary_loader
		753	mov [.bSettingsChanged], 1
		754	end if
		755	call clear_vmodes_table ;clear vmodes_table
		756	jmp .printcfg
		757	.change_a:
		758	.loops:
		759	call draw_vmodes_table
		760	_setcursor 25,0 ; out of screen
		761	xor ax, ax
		762	int 0x16
		763	; call clear_table_cursor ;clear current position of cursor
		764
		765	mov si, word [cursor_pos]
		766
		767	cmp ah, 0x48;x,0x48E0 ; up
		768	jne .down
		769	cmp si, modes_table
		770	jbe .loops
		771	sub word [cursor_pos], size_of_step
		772	jmp .loops
		773
		774	.down:
		775	cmp ah, 0x50;x,0x50E0 ; down
		776	jne .pgup
		777	cmp word[es:si+10], -1
		778	je .loops
		779	add word [cursor_pos], size_of_step
		780	jmp .loops
		781
		782	.pgup:
		783	cmp ah, 0x49 ; page up
		784	jne .pgdn
		785	sub si, size_of_step*long_v_table
		786	cmp si, modes_table
		787	jae @f
		788	mov si, modes_table
		789	@@:
		790	mov word [cursor_pos], si
		791	mov si, word [home_cursor]
		792	sub si, size_of_step*long_v_table
		793	cmp si, modes_table
		794	jae @f
		795	mov si, modes_table
		796	@@:
		797	mov word [home_cursor], si
		798	jmp .loops
		799
		800	.pgdn:
		801	cmp ah, 0x51 ; page down
		802	jne .enter
		803	mov ax, [end_cursor]
		804	add si, size_of_step*long_v_table
		805	cmp si, ax
		806	jb @f
		807	mov si, ax
		808	sub si, size_of_step
		809	@@:
		810	mov word [cursor_pos], si
		811	mov si, word [home_cursor]
		812	sub ax, size_of_step*long_v_table
		813	add si, size_of_step*long_v_table
		814	cmp si, ax
		815	jb @f
		816	mov si, ax
		817	@@:
		818	mov word [home_cursor], si
		819	jmp .loops
		820
		821	.enter:
		822	cmp al, 0x0D;x,0x1C0D ; enter
		823	jne .loops
		824	push word [cursor_pos]
		825	pop bp
		826	push word [es:bp]
		827	pop word [x_save]
		828	push word [es:bp+2]
		829	pop word [y_save]
		830	push word [es:bp+6]
		831	pop word [number_vm]
		832	mov word [preboot_graph], bp ;save choose
		833
		834	jmp .d
		835
		836	.change_b:
		837	_setcursor 15,0
		838	; mov si, ask_dma
		839	; call print
		840	; mov bx, '13'
		841	; call getkey
		842	; mov [preboot_dma], al
		843	mov si, ask_bd
		844	call print
		845	mov bx, '12'
		846	call getkey
		847	mov [preboot_biosdisk], al
		848	_setcursor 11,0
		849	jmp .d
		850	;.change_c:
		851	; _setcursor 15,0
		852	; mov si, vrrmprint
		853	; call print
		854	; mov bx, '12'
		855	; call getkey
		856	; mov [preboot_vrrm], al
		857	; _setcursor 12,0
		858	; jmp .d
		859	;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		860	.say_on_off:
		861	pushf
		862	call print
		863	mov si, on_msg
		864	popf
		865	jz @f
		866	mov si, off_msg
		867	@@:
		868	jmp printplain
		869	; novesa and vervesa strings are not used at the moment of executing this code
		870	virtual at novesa
		871	.oldtimer dd ?
		872	.starttime dd ?
		873	if ~ defined extended_primary_loader
		874	.bSettingsChanged db ?
		875	end if
		876	.timer dd ?
		877	end virtual
		878	if ~ defined extended_primary_loader
		879	.loader_block dd -1
		880	end if
		881	.gettime:
		882	mov ah, 0
		883	int 1Ah
		884	xchg ax, cx
		885	shl eax, 10h
		886	xchg ax, dx
		887	ret
		888	.newtimer:
		889	push ds
		890	push cs
		891	pop ds
		892	pushf
		893	call [.oldtimer]
		894	pushad
		895	call .gettime
		896	sub eax, [.starttime]
		897	if defined extended_primary_loader
		898	sub ax, [preboot_timeout]
		899	else
		900	sub ax, 18*5
		901	end if
		902	jae .timergo
		903	neg ax
		904	add ax, 18-1
		905	mov bx, 18
		906	xor dx, dx
		907	div bx
		908	if lang eq ru
3539	clevermous	909	; подождите 5 секунд, 4/3/2 секунды, 1 секунду
2288	clevermous	910	cmp al, 5
		911	mov cl, ' '
		912	jae @f
		913	cmp al, 1
3539	clevermous	914	mov cl, 0xE3 ; 'у' in cp866
2288	clevermous	915	jz @f
3539	clevermous	916	mov cl, 0xEB ; 'ы' in cp866
2288	clevermous	917	@@:
		918	mov [time_str+9], cl
		919	else if lang eq et
		920	cmp al, 1
		921	ja @f
3539	clevermous	922	mov byte [time_str+9], ' '
		923	mov byte [time_str+10], ' '
2288	clevermous	924	@@:
3274	esevece	925	else if lang eq sp
		926	; esperar 5/4/3/2 segundos, 1 segundo
		927	cmp al, 1
		928	mov cl, 's'
		929	ja @f
		930	mov cl, ' '
		931	@@:
		932	mov [time_str+10], cl
2288	clevermous	933	else
		934	; wait 5/4/3/2 seconds, 1 second
		935	cmp al, 1
		936	mov cl, 's'
		937	ja @f
		938	mov cl, ' '
		939	@@:
		940	mov [time_str+9], cl
		941	end if
		942	add al, '0'
		943	mov [time_str+1], al
		944	mov si, time_msg
		945	_setcursor 7,0
		946	call print
		947	_setcursor 25,0
		948	popad
		949	pop ds
		950	iret
		951	.timergo:
		952	push 0
		953	pop es
		954	mov eax, [.oldtimer]
		955	mov [es:8*4], eax
		956	mov sp, 0EC00h
		957	.continue:
		958	sti
		959	_setcursor 6,0
		960	mov si, space_msg
		961	call printplain
		962	call printplain
		963	_setcursor 6,0
		964	mov si, loading_msg
		965	call print
		966	_setcursor 15,0
		967	if ~ defined extended_primary_loader
		968	cmp [.bSettingsChanged], 0
		969	jz .load
		970	cmp [.loader_block], -1
		971	jz .load
		972	les bx, [.loader_block]
		973	mov eax, [es:bx+3]
		974	push ds
		975	pop es
		976	test eax, eax
		977	jz .load
		978	push eax
		979	mov si, save_quest
		980	call print
		981	.waityn:
		982	mov ah, 0
		983	int 16h
		984	or al, 20h
		985	cmp al, 'n'
		986	jz .loadc
3430	esevece	987	if lang eq sp
		988	cmp al, 's'
		989	else
2288	clevermous	990	cmp al, 'y'
3430	esevece	991	end if
2288	clevermous	992	jnz .waityn
		993	call putchar
		994	mov byte [space_msg+80], 186
		995
		996	pop eax
		997	push cs
		998	push .cont
		999	push eax
		1000	retf ;call back
		1001	.loadc:
		1002	pop eax
		1003	.cont:
		1004	push cs
		1005	pop ds
		1006	mov si, space_msg
		1007	mov byte [si+80], 0
		1008	_setcursor 15,0
		1009	call printplain
		1010	_setcursor 15,0
		1011	.load:
		1012	end if
		1013	; \end{diamond}[02.12.2005]
		1014
		1015	; ASK GRAPHICS MODE
		1016
		1017	call set_vmode
		1018
		1019	; GRAPHICS ACCELERATION
		1020	; force yes
2466	Serge	1021	mov [es:BOOT_MTRR], byte 1
2288	clevermous	1022
		1023	; DMA ACCESS TO HD
		1024
		1025	mov al, [preboot_dma]
2466	Serge	1026	mov [es:BOOT_DMA], al
2288	clevermous	1027
		1028	;; VRR_M USE
		1029	;
		1030	; mov al,[preboot_vrrm]
		1031	; mov [es:0x9030], al
		1032
		1033	; BOOT DEVICE
		1034
		1035	mov al, [preboot_device]
		1036	dec al
		1037	mov [boot_dev], al
		1038
		1039	; GET MEMORY MAP
		1040	include '../detect/biosmem.inc'
		1041
		1042	; READ DISKETTE TO MEMORY
		1043
		1044	cmp [boot_dev], 0
		1045	jne no_sys_on_floppy
		1046	mov si, diskload
		1047	call print
		1048	xor ax, ax ; reset drive
		1049	xor dx, dx
		1050	int 0x13
		1051	; do we boot from CD-ROM?
		1052	mov ah, 41h
		1053	mov bx, 55AAh
		1054	xor dx, dx
		1055	int 0x13
		1056	jc .nocd
		1057	cmp bx, 0AA55h
		1058	jnz .nocd
		1059	mov ah, 48h
		1060	push ds
		1061	push es
		1062	pop ds
		1063	mov si, 0xa000
		1064	mov word [si], 30
		1065	int 0x13
		1066	pop ds
		1067	jc .nocd
		1068	push ds
		1069	lds si, [es:si+26]
		1070	test byte [ds:si+10], 40h
		1071	pop ds
		1072	jz .nocd
		1073	; yes - read all floppy by 18 sectors
		1074
		1075	; TODO: !!!! read only first sector and set variables !!!!!
		1076	; ...
		1077	; TODO: !!! then read flippy image track by track
		1078
		1079	mov cx, 0x0001 ; startcyl,startsector
		1080	.a1:
		1081	push cx dx
		1082	mov al, 18
		1083	mov bx, 0xa000
		1084	call boot_read_floppy
		1085	mov si, movedesc
		1086	push es
		1087	push ds
		1088	pop es
		1089	mov cx, 256*18
		1090	mov ah, 0x87
		1091	int 0x15
		1092	pop es
		1093	pop dx cx
		1094	test ah, ah
		1095	jnz sayerr_floppy
		1096	add dword [si+83+2], 51218
		1097	inc dh
		1098	cmp dh, 2
		1099	jnz .a1
		1100	mov dh, 0
		1101	inc ch
		1102	cmp ch, 80
		1103	jae ok_sys_on_floppy
		1104	pusha
		1105	mov al, ch
		1106	shr ch, 2
		1107	add al, ch
		1108	aam
		1109	xchg al, ah
		1110	add ax, '00'
		1111	mov si, pros
		1112	mov [si], ax
		1113	call printplain
		1114	popa
		1115	jmp .a1
		1116	.nocd:
		1117	; no - read only used sectors from floppy
		1118	; now load floppy image to memory
		1119	; at first load boot sector and first FAT table
		1120
		1121	; read only first sector and fill variables
		1122	mov cx, 0x0001 ; first logical sector
		1123	xor dx, dx ; head = 0, drive = 0 (a:)
		1124	mov al, 1 ; read one sector
		1125	mov bx, 0xB000 ; es:bx -> data area
		1126	call boot_read_floppy
		1127	; fill the necessary parameters to work with a floppy
		1128	mov ax, word [es:bx+24]
		1129	mov word [BPB_SecPerTrk], ax
		1130	mov ax, word [es:bx+26]
		1131	mov word [BPB_NumHeads], ax
		1132	mov ax, word [es:bx+17]
		1133	mov word [BPB_RootEntCnt], ax
		1134	mov ax, word [es:bx+14]
		1135	mov word [BPB_RsvdSecCnt], ax
		1136	mov ax, word [es:bx+19]
		1137	mov word [BPB_TotSec16], ax
		1138	mov al, byte [es:bx+13]
		1139	mov byte [BPB_SecPerClus], al
		1140	mov al, byte [es:bx+16]
		1141	mov byte [BPB_NumFATs], al
		1142	; 18.11.2008
		1143	mov ax, word [es:bx+22]
		1144	mov word [BPB_FATSz16], ax
		1145	mov cx, word [es:bx+11]
		1146	mov word [BPB_BytsPerSec], cx
		1147
		1148	; count of clusters in FAT12 ((size_of_FAT*2)/3)
		1149	; mov ax, word [BPB_FATSz16]
		1150	; mov cx, word [BPB_BytsPerSec]
		1151	;end 18.11.2008
		1152	xor dx, dx
		1153	mul cx
		1154	shl ax, 1
		1155	mov cx, 3
		1156	div cx ; now ax - number of clusters in FAT12
		1157	mov word [end_of_FAT], ax
		1158
		1159	; load first FAT table
		1160	mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!!
		1161	xor dx, dx ; starthead,drive
		1162	mov al, byte [BPB_FATSz16] ; no of sectors to read
		1163	add bx, word [BPB_BytsPerSec] ; es:bx -> data area
		1164	call boot_read_floppy
		1165	mov bx, 0xB000
		1166
		1167	; and copy them to extended memory
		1168	mov si, movedesc
		1169	mov [si+8*2+3], bh ; from
		1170
		1171	mov ax, word [BPB_BytsPerSec]
		1172	shr ax, 1 ; words per sector
		1173	mov cx, word [BPB_RsvdSecCnt]
		1174	add cx, word [BPB_FATSz16]
		1175	mul cx
		1176	push ax ; save to stack count of words in boot+FAT
		1177	xchg ax, cx
		1178
		1179	push es
		1180	push ds
		1181	pop es
		1182	mov ah, 0x87
		1183	int 0x15
		1184	pop es
		1185	test ah, ah
		1186	jz @f
		1187	sayerr_floppy:
		1188	mov dx, 0x3f2
		1189	mov al, 0
		1190	out dx, al
		1191	sayerr_memmove:
		1192	mov si, memmovefailed
		1193	jmp sayerr_plain
		1194	@@:
		1195	pop ax ; restore from stack count of words in boot+FAT
		1196	shl ax, 1 ; make bytes count from count of words
		1197	and eax, 0ffffh
		1198	add dword [si+8*3+2], eax
		1199
		1200	; copy first FAT to second copy
		1201	; TODO: BPB_NumFATs !!!!!
		1202	add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!!
		1203	mov byte [si+8*2+3], bh ; bx - begin of FAT
		1204
		1205	mov ax, word [BPB_BytsPerSec]
		1206	shr ax, 1 ; words per sector
		1207	mov cx, word [BPB_FATSz16]
		1208	mul cx
		1209	mov cx, ax ; cx - count of words in FAT
		1210
		1211	push es
		1212	push ds
		1213	pop es
		1214	mov ah, 0x87
		1215	int 0x15
		1216	pop es
		1217	test ah, ah
		1218	jnz sayerr_floppy
		1219
		1220	mov ax, cx
		1221	shl ax, 1
		1222	and eax, 0ffffh ; ax - count of bytes in FAT
		1223	add dword [si+8*3+2], eax
		1224
		1225	; reading RootDir
		1226	; TODO: BPB_NumFATs
		1227	add bx, ax
		1228	add bx, 100h
		1229	and bx, 0ff00h ; bx - place in buffer to write RootDir
		1230	push bx
		1231
		1232	mov bx, word [BPB_BytsPerSec]
		1233	shr bx, 5 ; divide bx by 32
		1234	mov ax, word [BPB_RootEntCnt]
		1235	xor dx, dx
		1236	div bx
		1237	push ax ; ax - count of RootDir sectors
		1238
		1239	mov ax, word [BPB_FATSz16]
		1240	xor cx, cx
		1241	mov cl, byte [BPB_NumFATs]
		1242	mul cx
		1243	add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir
		1244
		1245	mov word [FirstDataSector], ax
		1246	pop bx
		1247	push bx
		1248	add word [FirstDataSector], bx ; Begin of data region of floppy
		1249
		1250	; read RootDir
		1251	call conv_abs_to_THS
		1252	pop ax
		1253	pop bx ; place in buffer to write
		1254	push ax
		1255	call boot_read_floppy ; read RootDir into buffer
		1256	; copy RootDir
		1257	mov byte [si+8*2+3], bh ; from buffer
		1258	pop ax ; ax = count of RootDir sectors
		1259	mov cx, word [BPB_BytsPerSec]
		1260	mul cx
		1261	shr ax, 1
		1262	mov cx, ax ; count of words to copy
		1263	push es
		1264	push ds
		1265	pop es
		1266	mov ah, 0x87
		1267	int 0x15
		1268	pop es
		1269
		1270	mov ax, cx
		1271	shl ax, 1
		1272	and eax, 0ffffh ; ax - count of bytes in RootDir
		1273	add dword [si+8*3+2], eax ; add count of bytes copied
		1274
		1275	; Reading data clusters from floppy
		1276	mov byte [si+8*2+3], bh
		1277	push bx
		1278
		1279	mov di, 2 ; First data cluster
		1280	.read_loop:
		1281	mov bx, di
		1282	shr bx, 1 ; bx+di = di*1.5
		1283	jnc .even
		1284	test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!!
		1285	jmp @f
		1286	.even:
		1287	test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!!
		1288
		1289	@@:
		1290	jz .skip
		1291	; read cluster di
		1292	;.read:
		1293	;conv cluster di to abs. sector ax
		1294	; ax = (N-2) * BPB_SecPerClus + FirstDataSector
		1295	mov ax, di
		1296	sub ax, 2
		1297	xor bx, bx
		1298	mov bl, byte [BPB_SecPerClus]
		1299	mul bx
		1300	add ax, word [FirstDataSector]
		1301	call conv_abs_to_THS
		1302	pop bx
		1303	push bx
		1304	mov al, byte [BPB_SecPerClus] ; number of sectors in cluster
		1305	call boot_read_floppy
		1306	push es
		1307	push ds
		1308	pop es
		1309	pusha
		1310	;
		1311	mov ax, word [BPB_BytsPerSec]
		1312	xor cx, cx
		1313	mov cl, byte [BPB_SecPerClus]
		1314	mul cx
		1315	shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2
		1316	mov cx, ax ; number of words to copy (count words in cluster)
		1317	;
		1318	mov ah, 0x87
		1319	int 0x15 ; copy data
		1320	test ah, ah
		1321	popa
		1322	pop es
		1323	jnz sayerr_floppy
		1324	; skip cluster di
		1325	.skip:
		1326	mov ax, word [BPB_BytsPerSec]
		1327	xor cx, cx
		1328	mov cl, byte [BPB_SecPerClus]
		1329	mul cx
		1330	and eax, 0ffffh ; ax - count of bytes in cluster
		1331	add dword [si+8*3+2], eax
		1332
		1333	mov ax, word [end_of_FAT] ; max cluster number
		1334	pusha
		1335	; draw percentage
		1336	; total clusters: ax
		1337	; read clusters: di
		1338	xchg ax, di
		1339	mov cx, 100
		1340	mul cx
		1341	div di
		1342	aam
		1343	xchg al, ah
		1344	add ax, '00'
		1345	mov si, pros
		1346	cmp [si], ax
		1347	jz @f
		1348	mov [si], ax
		1349	call printplain
		1350	@@:
		1351	popa
		1352	inc di
		1353	cmp di, word [end_of_FAT] ; max number of cluster
		1354	jnz .read_loop
		1355	pop bx ; clear stack
		1356
		1357	ok_sys_on_floppy:
		1358	mov si, backspace2
		1359	call printplain
		1360	mov si, okt
		1361	call printplain
		1362	no_sys_on_floppy:
		1363	xor ax, ax ; reset drive
		1364	xor dx, dx
		1365	int 0x13
		1366	mov dx, 0x3f2 ; floppy motor off
		1367	mov al, 0
		1368	out dx, al
		1369
		1370	if defined extended_primary_loader
		1371	cmp [boot_dev], 1
		1372	jne no_sys_from_primary
		1373	; load kolibri.img using callback from primary loader
		1374	and word [movedesc + 24 + 2], 0
		1375	mov byte [movedesc + 24 + 4], 10h
		1376	; read in blocks of 64K until file is fully loaded
		1377	mov ax, 1
		1378	.repeat:
		1379	mov di, image_file_struct
		1380	call [bootcallback]
		1381	push cs
		1382	pop ds
		1383	push cs
		1384	pop es
		1385	cmp bx, 1
		1386	ja sayerr_badsect
		1387	push bx
		1388	mov si, movedesc
		1389	and word [si + 16 + 2], 0
		1390	mov byte [si + 16 + 4], 4
		1391	mov ah, 87h
		1392	mov cx, 8000h
		1393	int 15h
		1394	pop bx
		1395	test ah, ah
		1396	jnz sayerr_memmove
		1397	inc byte [si + 24 + 4]
		1398	test bx, bx
		1399	jz no_sys_from_primary
		1400	mov ax, 2
		1401	jmp .repeat
		1402	no_sys_from_primary:
		1403	end if
		1404
		1405	; SET GRAPHICS
		1406
		1407	xor ax, ax
		1408	mov es, ax
		1409
2466	Serge	1410	mov ax, [es:BOOT_VESA_MODE] ; vga & 320x200
2288	clevermous	1411	mov bx, ax
		1412	cmp ax, 0x13
		1413	je setgr
		1414	cmp ax, 0x12
		1415	je setgr
		1416	mov ax, 0x4f02 ; Vesa
		1417	setgr:
		1418	int 0x10
		1419	test ah, ah
		1420	mov si, fatalsel
		1421	jnz v_mode_error
		1422	; set mode 0x12 graphics registers:
		1423	cmp bx, 0x12
		1424	jne gmok2
		1425
		1426	mov al, 0x05
		1427	mov dx, 0x03ce
		1428	push dx
		1429	out dx, al ; select GDC mode register
		1430	mov al, 0x02
		1431	inc dx
		1432	out dx, al ; set write mode 2
		1433
		1434	mov al, 0x02
		1435	mov dx, 0x03c4
		1436	out dx, al ; select VGA sequencer map mask register
		1437	mov al, 0x0f
		1438	inc dx
		1439	out dx, al ; set mask for all planes 0-3
		1440
		1441	mov al, 0x08
		1442	pop dx
		1443	out dx, al ; select GDC bit mask register
		1444	; for writes to 0x03cf
		1445	gmok2:
		1446	push ds
		1447	pop es

Subversion Repositories Kolibri OS

(root)/kernel/trunk/boot/bootcode.inc – Rev 3712