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: 3539 $
		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
2466	Serge	390	and word [es:BOOT_IDE_BASE_ADDR], 0
2288	clevermous	391	; \begin{Mario79}
		392	; find HDD IDE DMA PCI device
		393	; check for PCI BIOS
		394	mov ax, 0xB101
		395	int 0x1A
		396	jc .nopci
		397	cmp edx, 'PCI '
		398	jnz .nopci
		399	; find PCI class code
		400	; class 1 = mass storage
		401	; subclass 1 = IDE controller
		402	; a) class 1, subclass 1, programming interface 0x80
		403	mov ax, 0xB103
		404	mov ecx, 110000h + 1100h + 0x80
		405	xor si, si ; device index = 0
		406	int 0x1A
		407	jnc .found
		408	; b) class 1, subclass 1, programming interface 0x8A
		409	mov ax, 0xB103
		410	mov ecx, 110000h + 1100h + 0x8A
		411	xor si, si ; device index = 0
		412	int 0x1A
		413	jnc .found
		414	; c) class 1, subclass 1, programming interface 0x85
		415	mov ax, 0xB103
		416	mov ecx, 110000h + 1100h + 0x85
		417	xor si, si
		418	int 0x1A
		419	jc .nopci
		420	.found:
		421	; get memory base
		422	mov ax, 0xB10A
		423	mov di, 0x20 ; memory base is config register at 0x20
		424	int 0x1A
		425	jc .nopci
		426	and cx, 0xFFF0 ; clear address decode type
2466	Serge	427	mov [es:BOOT_IDE_BASE_ADDR], cx
2288	clevermous	428	.nopci:
		429	; \end{Mario79}
		430
3539	clevermous	431	mov al, 0xf6 ; Сброс клавиатуры, разрешить сканирование
2288	clevermous	432	out 0x60, al
		433	xor cx, cx
		434	wait_loop: ; variant 2
		435	; reading state of port of 8042 controller
		436	in al, 64h
		437	and al, 00000010b ; ready flag
		438	; wait until 8042 controller is ready
		439	loopnz wait_loop
		440
		441	;;;/diamond today 5.02.2008
		442	; set keyboard typematic rate & delay
		443	mov al, 0xf3
		444	out 0x60, al
		445	xor cx, cx
		446	@@:
		447	in al, 64h
		448	test al, 2
		449	loopnz @b
		450	mov al, 0
		451	out 0x60, al
		452	xor cx, cx
		453	@@:
		454	in al, 64h
		455	test al, 2
		456	loopnz @b
		457	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		458	; --------------- APM ---------------------
2466	Serge	459	and word [es:BOOT_APM_VERSION], 0 ; ver = 0.0 (APM not found)
2288	clevermous	460	mov ax, 0x5300
		461	xor bx, bx
		462	int 0x15
		463	jc apm_end ; APM not found
		464	test cx, 2
		465	jz apm_end ; APM 32-bit protected-mode interface not supported
2466	Serge	466	mov [es:BOOT_APM_VERSION], ax ; Save APM Version
		467	mov [es:BOOT_APM_FLAGS], cx ; Save APM flags
2288	clevermous	468
		469	; Write APM ver ----
		470	and ax, 0xf0f
		471	add ax, '00'
		472	mov si, msg_apm
		473	mov [si + 5], ah
		474	mov [si + 7], al
		475	_setcursor 0, 3
		476	call printplain
		477	; ------------------
		478
		479	mov ax, 0x5304 ; Disconnect interface
		480	xor bx, bx
		481	int 0x15
		482	mov ax, 0x5303 ; Connect 32 bit mode interface
		483	xor bx, bx
		484	int 0x15
		485
2466	Serge	486	mov [es:BOOT_APM_ENTRY], ebx
		487	mov [es:BOOT_APM_CODE_32], ax
		488	mov [es:BOOT_APM_CODE_16], cx
		489	mov [es:BOOT_APM_DATA_16], dx
2288	clevermous	490
		491	apm_end:
		492	_setcursor d80x25_top_num, 0
		493
		494	if ~ defined extended_primary_loader
		495	;CHECK current of code
		496	cmp [cfgmanager.loader_block], -1
		497	jz noloaderblock
		498	les bx, [cfgmanager.loader_block]
		499	cmp byte [es:bx], 1
		500	mov si, loader_block_error
		501	jnz sayerr
		502	push 0
		503	pop es
		504	end if
		505
		506	noloaderblock:
		507	; DISPLAY VESA INFORMATION
		508	call print_vesa_info
		509	call calc_vmodes_table
		510	call check_first_parm ;check and enable cursor_pos
		511
		512	; \begin{diamond}[30.11.2005]
		513	cfgmanager:
		514	; settings:
		515	; a) preboot_graph = graphical mode
		516	; preboot_gprobe = probe this mode?
		517	; b) preboot_dma = use DMA access?
		518	; c) preboot_vrrm = use VRR?
		519	; d) preboot_device = from what boot?
		520
		521	; determine default settings
		522	if ~ defined extended_primary_loader
		523	mov [.bSettingsChanged], 0
		524	end if
		525
		526	;.preboot_gr_end:
		527	mov di, preboot_device
		528	; if image in memory is present and [preboot_device] is uninitialized,
		529	; set it to use this preloaded image
		530	cmp byte [di], 0
		531	jnz .preboot_device_inited
		532	if defined extended_primary_loader
		533	inc byte [di]
		534	cmp byte [bootdevice], 'f' ; floppy?
		535	jz .preboot_device_inited
		536	inc byte [di]
		537	else
		538	cmp [.loader_block], -1
		539	jz @f
		540	les bx, [.loader_block]
		541	test byte [es:bx+1], 1
		542	jz @f
		543	mov byte [di], 3
		544	jmp .preboot_device_inited
		545	@@:
		546	; otherwise, set [preboot_device] to 1 (default value - boot from floppy)
		547	mov byte [di], 1
		548	end if
		549	.preboot_device_inited:
		550	; following 4 lines set variables to 1 if its current value is 0
		551	cmp byte [di+preboot_dma-preboot_device], 1
		552	adc byte [di+preboot_dma-preboot_device], 0
		553	cmp byte [di+preboot_biosdisk-preboot_device], 1
		554	adc byte [di+preboot_biosdisk-preboot_device], 0
		555	;; default value for VRR is OFF
		556	; cmp byte [di+preboot_vrrm-preboot_device], 0
		557	; jnz @f
		558	; mov byte [di+preboot_vrrm-preboot_device], 2
		559	;@@:
		560	; notify user
		561	_setcursor 5,2
		562
		563	mov si, linef
		564	call printplain
		565	mov si, start_msg
		566	call print
		567	mov si, time_msg
		568	call print
		569	; get start time
		570	call .gettime
		571	mov [.starttime], eax
		572	mov word [.timer], .newtimer
		573	mov word [.timer+2], cs
		574	.printcfg:
		575
		576	_setcursor 9,0
		577	mov si, current_cfg_msg
		578	call print
		579	mov si, curvideo_msg
		580	call print
		581
		582	call draw_current_vmode
		583
		584	mov si, usebd_msg
		585	cmp [preboot_biosdisk], 1
		586	call .say_on_off
		587	; mov si, vrrm_msg
		588	; cmp [preboot_vrrm], 1
		589	; call .say_on_off
		590	mov si, preboot_device_msg
		591	call print
		592	mov al, [preboot_device]
		593	if defined extended_primary_loader
		594	and eax, 3
		595	else
		596	and eax, 7
		597	end if
		598	mov si, [preboot_device_msgs+eax*2]
		599	call printplain
		600	.show_remarks:
		601	; show remarks in gray color
		602	mov di, ((21-num_remarks)80 + 2)2
		603	push 0xB800
		604	pop es
		605	mov cx, num_remarks
		606	mov si, remarks
		607	.write_remarks:
		608	lodsw
		609	push si
		610	xchg ax, si
		611	mov ah, 1*16+7 ; background: blue (1), foreground: gray (7)
		612	push di
		613	.write_remark:
		614	lodsb
		615	test al, al
		616	jz @f
		617	stosw
		618	jmp .write_remark
		619	@@:
		620	pop di
		621	pop si
		622	add di, 80*2
		623	loop .write_remarks
		624	.wait:
		625	_setcursor 25,0 ; out of screen
		626	; set timer interrupt handler
		627	cli
		628	push 0
		629	pop es
		630	push dword [es:8*4]
		631	pop dword [.oldtimer]
		632	push dword [.timer]
		633	pop dword [es:8*4]
		634	; mov eax, [es:8*4]
		635	; mov [.oldtimer], eax
		636	; mov eax, [.timer]
		637	; mov [es:8*4], eax
		638	sti
		639	; wait for keypressed
		640	xor ax, ax
		641	int 16h
		642	push ax
		643	; restore timer interrupt
		644	; push 0
		645	; pop es
		646	mov eax, [.oldtimer]
		647	mov [es:8*4], eax
		648	mov [.timer], eax
		649
		650	_setcursor 7,0
		651	mov si, space_msg
		652	call printplain
		653	; clear remarks and restore normal attributes
		654	push es
		655	mov di, ((21-num_remarks)80 + 2)2
		656	push 0xB800
		657	pop es
		658	mov cx, num_remarks
		659	mov ax, ' ' + (116 + 15)100h
		660	@@:
		661	push cx
		662	mov cx, 76
		663	rep stosw
		664	pop cx
		665	add di, 4*2
		666	loop @b
		667	pop es
		668	pop ax
		669	; switch on key
		670	cmp al, 13
		671	jz .continue
		672	or al, 20h
		673	cmp al, 'a'
		674	jz .change_a
		675	cmp al, 'b'
		676	jz .change_b
		677	; cmp al, 'c'
		678	; jz .change_c
		679	cmp al, 'c' ; 'd'
		680	jnz .show_remarks
		681	_setcursor 15,0
		682	mov si, bdev
		683	call print
		684	if defined extended_primary_loader
		685	mov bx, '12'
		686	else
		687	mov bx, '14'
		688	end if
		689	call getkey
		690	mov [preboot_device], al
		691	_setcursor 13,0
		692	.d:
		693	if ~ defined extended_primary_loader
		694	mov [.bSettingsChanged], 1
		695	end if
		696	call clear_vmodes_table ;clear vmodes_table
		697	jmp .printcfg
		698	.change_a:
		699	.loops:
		700	call draw_vmodes_table
		701	_setcursor 25,0 ; out of screen
		702	xor ax, ax
		703	int 0x16
		704	; call clear_table_cursor ;clear current position of cursor
		705
		706	mov si, word [cursor_pos]
		707
		708	cmp ah, 0x48;x,0x48E0 ; up
		709	jne .down
		710	cmp si, modes_table
		711	jbe .loops
		712	sub word [cursor_pos], size_of_step
		713	jmp .loops
		714
		715	.down:
		716	cmp ah, 0x50;x,0x50E0 ; down
		717	jne .pgup
		718	cmp word[es:si+10], -1
		719	je .loops
		720	add word [cursor_pos], size_of_step
		721	jmp .loops
		722
		723	.pgup:
		724	cmp ah, 0x49 ; page up
		725	jne .pgdn
		726	sub si, size_of_step*long_v_table
		727	cmp si, modes_table
		728	jae @f
		729	mov si, modes_table
		730	@@:
		731	mov word [cursor_pos], si
		732	mov si, word [home_cursor]
		733	sub si, size_of_step*long_v_table
		734	cmp si, modes_table
		735	jae @f
		736	mov si, modes_table
		737	@@:
		738	mov word [home_cursor], si
		739	jmp .loops
		740
		741	.pgdn:
		742	cmp ah, 0x51 ; page down
		743	jne .enter
		744	mov ax, [end_cursor]
		745	add si, size_of_step*long_v_table
		746	cmp si, ax
		747	jb @f
		748	mov si, ax
		749	sub si, size_of_step
		750	@@:
		751	mov word [cursor_pos], si
		752	mov si, word [home_cursor]
		753	sub ax, size_of_step*long_v_table
		754	add si, size_of_step*long_v_table
		755	cmp si, ax
		756	jb @f
		757	mov si, ax
		758	@@:
		759	mov word [home_cursor], si
		760	jmp .loops
		761
		762	.enter:
		763	cmp al, 0x0D;x,0x1C0D ; enter
		764	jne .loops
		765	push word [cursor_pos]
		766	pop bp
		767	push word [es:bp]
		768	pop word [x_save]
		769	push word [es:bp+2]
		770	pop word [y_save]
		771	push word [es:bp+6]
		772	pop word [number_vm]
		773	mov word [preboot_graph], bp ;save choose
		774
		775	jmp .d
		776
		777	.change_b:
		778	_setcursor 15,0
		779	; mov si, ask_dma
		780	; call print
		781	; mov bx, '13'
		782	; call getkey
		783	; mov [preboot_dma], al
		784	mov si, ask_bd
		785	call print
		786	mov bx, '12'
		787	call getkey
		788	mov [preboot_biosdisk], al
		789	_setcursor 11,0
		790	jmp .d
		791	;.change_c:
		792	; _setcursor 15,0
		793	; mov si, vrrmprint
		794	; call print
		795	; mov bx, '12'
		796	; call getkey
		797	; mov [preboot_vrrm], al
		798	; _setcursor 12,0
		799	; jmp .d
		800	;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		801	.say_on_off:
		802	pushf
		803	call print
		804	mov si, on_msg
		805	popf
		806	jz @f
		807	mov si, off_msg
		808	@@:
		809	jmp printplain
		810	; novesa and vervesa strings are not used at the moment of executing this code
		811	virtual at novesa
		812	.oldtimer dd ?
		813	.starttime dd ?
		814	if ~ defined extended_primary_loader
		815	.bSettingsChanged db ?
		816	end if
		817	.timer dd ?
		818	end virtual
		819	if ~ defined extended_primary_loader
		820	.loader_block dd -1
		821	end if
		822	.gettime:
		823	mov ah, 0
		824	int 1Ah
		825	xchg ax, cx
		826	shl eax, 10h
		827	xchg ax, dx
		828	ret
		829	.newtimer:
		830	push ds
		831	push cs
		832	pop ds
		833	pushf
		834	call [.oldtimer]
		835	pushad
		836	call .gettime
		837	sub eax, [.starttime]
		838	if defined extended_primary_loader
		839	sub ax, [preboot_timeout]
		840	else
		841	sub ax, 18*5
		842	end if
		843	jae .timergo
		844	neg ax
		845	add ax, 18-1
		846	mov bx, 18
		847	xor dx, dx
		848	div bx
		849	if lang eq ru
3539	clevermous	850	; подождите 5 секунд, 4/3/2 секунды, 1 секунду
2288	clevermous	851	cmp al, 5
		852	mov cl, ' '
		853	jae @f
		854	cmp al, 1
3539	clevermous	855	mov cl, 0xE3 ; 'у' in cp866
2288	clevermous	856	jz @f
3539	clevermous	857	mov cl, 0xEB ; 'ы' in cp866
2288	clevermous	858	@@:
		859	mov [time_str+9], cl
		860	else if lang eq et
		861	cmp al, 1
		862	ja @f
3539	clevermous	863	mov byte [time_str+9], ' '
		864	mov byte [time_str+10], ' '
2288	clevermous	865	@@:
3274	esevece	866	else if lang eq sp
		867	; esperar 5/4/3/2 segundos, 1 segundo
		868	cmp al, 1
		869	mov cl, 's'
		870	ja @f
		871	mov cl, ' '
		872	@@:
		873	mov [time_str+10], cl
2288	clevermous	874	else
		875	; wait 5/4/3/2 seconds, 1 second
		876	cmp al, 1
		877	mov cl, 's'
		878	ja @f
		879	mov cl, ' '
		880	@@:
		881	mov [time_str+9], cl
		882	end if
		883	add al, '0'
		884	mov [time_str+1], al
		885	mov si, time_msg
		886	_setcursor 7,0
		887	call print
		888	_setcursor 25,0
		889	popad
		890	pop ds
		891	iret
		892	.timergo:
		893	push 0
		894	pop es
		895	mov eax, [.oldtimer]
		896	mov [es:8*4], eax
		897	mov sp, 0EC00h
		898	.continue:
		899	sti
		900	_setcursor 6,0
		901	mov si, space_msg
		902	call printplain
		903	call printplain
		904	_setcursor 6,0
		905	mov si, loading_msg
		906	call print
		907	_setcursor 15,0
		908	if ~ defined extended_primary_loader
		909	cmp [.bSettingsChanged], 0
		910	jz .load
		911	cmp [.loader_block], -1
		912	jz .load
		913	les bx, [.loader_block]
		914	mov eax, [es:bx+3]
		915	push ds
		916	pop es
		917	test eax, eax
		918	jz .load
		919	push eax
		920	mov si, save_quest
		921	call print
		922	.waityn:
		923	mov ah, 0
		924	int 16h
		925	or al, 20h
		926	cmp al, 'n'
		927	jz .loadc
3430	esevece	928	if lang eq sp
		929	cmp al, 's'
		930	else
2288	clevermous	931	cmp al, 'y'
3430	esevece	932	end if
2288	clevermous	933	jnz .waityn
		934	call putchar
		935	mov byte [space_msg+80], 186
		936
		937	pop eax
		938	push cs
		939	push .cont
		940	push eax
		941	retf ;call back
		942	.loadc:
		943	pop eax
		944	.cont:
		945	push cs
		946	pop ds
		947	mov si, space_msg
		948	mov byte [si+80], 0
		949	_setcursor 15,0
		950	call printplain
		951	_setcursor 15,0
		952	.load:
		953	end if
		954	; \end{diamond}[02.12.2005]
		955
		956	; ASK GRAPHICS MODE
		957
		958	call set_vmode
		959
		960	; GRAPHICS ACCELERATION
		961	; force yes
2466	Serge	962	mov [es:BOOT_MTRR], byte 1
2288	clevermous	963
		964	; DMA ACCESS TO HD
		965
		966	mov al, [preboot_dma]
2466	Serge	967	mov [es:BOOT_DMA], al
2288	clevermous	968
		969	;; VRR_M USE
		970	;
		971	; mov al,[preboot_vrrm]
		972	; mov [es:0x9030], al
		973
		974	; BOOT DEVICE
		975
		976	mov al, [preboot_device]
		977	dec al
		978	mov [boot_dev], al
		979
		980	; GET MEMORY MAP
		981	include '../detect/biosmem.inc'
		982
		983	; READ DISKETTE TO MEMORY
		984
		985	cmp [boot_dev], 0
		986	jne no_sys_on_floppy
		987	mov si, diskload
		988	call print
		989	xor ax, ax ; reset drive
		990	xor dx, dx
		991	int 0x13
		992	; do we boot from CD-ROM?
		993	mov ah, 41h
		994	mov bx, 55AAh
		995	xor dx, dx
		996	int 0x13
		997	jc .nocd
		998	cmp bx, 0AA55h
		999	jnz .nocd
		1000	mov ah, 48h
		1001	push ds
		1002	push es
		1003	pop ds
		1004	mov si, 0xa000
		1005	mov word [si], 30
		1006	int 0x13
		1007	pop ds
		1008	jc .nocd
		1009	push ds
		1010	lds si, [es:si+26]
		1011	test byte [ds:si+10], 40h
		1012	pop ds
		1013	jz .nocd
		1014	; yes - read all floppy by 18 sectors
		1015
		1016	; TODO: !!!! read only first sector and set variables !!!!!
		1017	; ...
		1018	; TODO: !!! then read flippy image track by track
		1019
		1020	mov cx, 0x0001 ; startcyl,startsector
		1021	.a1:
		1022	push cx dx
		1023	mov al, 18
		1024	mov bx, 0xa000
		1025	call boot_read_floppy
		1026	mov si, movedesc
		1027	push es
		1028	push ds
		1029	pop es
		1030	mov cx, 256*18
		1031	mov ah, 0x87
		1032	int 0x15
		1033	pop es
		1034	pop dx cx
		1035	test ah, ah
		1036	jnz sayerr_floppy
		1037	add dword [si+83+2], 51218
		1038	inc dh
		1039	cmp dh, 2
		1040	jnz .a1
		1041	mov dh, 0
		1042	inc ch
		1043	cmp ch, 80
		1044	jae ok_sys_on_floppy
		1045	pusha
		1046	mov al, ch
		1047	shr ch, 2
		1048	add al, ch
		1049	aam
		1050	xchg al, ah
		1051	add ax, '00'
		1052	mov si, pros
		1053	mov [si], ax
		1054	call printplain
		1055	popa
		1056	jmp .a1
		1057	.nocd:
		1058	; no - read only used sectors from floppy
		1059	; now load floppy image to memory
		1060	; at first load boot sector and first FAT table
		1061
		1062	; read only first sector and fill variables
		1063	mov cx, 0x0001 ; first logical sector
		1064	xor dx, dx ; head = 0, drive = 0 (a:)
		1065	mov al, 1 ; read one sector
		1066	mov bx, 0xB000 ; es:bx -> data area
		1067	call boot_read_floppy
		1068	; fill the necessary parameters to work with a floppy
		1069	mov ax, word [es:bx+24]
		1070	mov word [BPB_SecPerTrk], ax
		1071	mov ax, word [es:bx+26]
		1072	mov word [BPB_NumHeads], ax
		1073	mov ax, word [es:bx+17]
		1074	mov word [BPB_RootEntCnt], ax
		1075	mov ax, word [es:bx+14]
		1076	mov word [BPB_RsvdSecCnt], ax
		1077	mov ax, word [es:bx+19]
		1078	mov word [BPB_TotSec16], ax
		1079	mov al, byte [es:bx+13]
		1080	mov byte [BPB_SecPerClus], al
		1081	mov al, byte [es:bx+16]
		1082	mov byte [BPB_NumFATs], al
		1083	; 18.11.2008
		1084	mov ax, word [es:bx+22]
		1085	mov word [BPB_FATSz16], ax
		1086	mov cx, word [es:bx+11]
		1087	mov word [BPB_BytsPerSec], cx
		1088
		1089	; count of clusters in FAT12 ((size_of_FAT*2)/3)
		1090	; mov ax, word [BPB_FATSz16]
		1091	; mov cx, word [BPB_BytsPerSec]
		1092	;end 18.11.2008
		1093	xor dx, dx
		1094	mul cx
		1095	shl ax, 1
		1096	mov cx, 3
		1097	div cx ; now ax - number of clusters in FAT12
		1098	mov word [end_of_FAT], ax
		1099
		1100	; load first FAT table
		1101	mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!!
		1102	xor dx, dx ; starthead,drive
		1103	mov al, byte [BPB_FATSz16] ; no of sectors to read
		1104	add bx, word [BPB_BytsPerSec] ; es:bx -> data area
		1105	call boot_read_floppy
		1106	mov bx, 0xB000
		1107
		1108	; and copy them to extended memory
		1109	mov si, movedesc
		1110	mov [si+8*2+3], bh ; from
		1111
		1112	mov ax, word [BPB_BytsPerSec]
		1113	shr ax, 1 ; words per sector
		1114	mov cx, word [BPB_RsvdSecCnt]
		1115	add cx, word [BPB_FATSz16]
		1116	mul cx
		1117	push ax ; save to stack count of words in boot+FAT
		1118	xchg ax, cx
		1119
		1120	push es
		1121	push ds
		1122	pop es
		1123	mov ah, 0x87
		1124	int 0x15
		1125	pop es
		1126	test ah, ah
		1127	jz @f
		1128	sayerr_floppy:
		1129	mov dx, 0x3f2
		1130	mov al, 0
		1131	out dx, al
		1132	sayerr_memmove:
		1133	mov si, memmovefailed
		1134	jmp sayerr_plain
		1135	@@:
		1136	pop ax ; restore from stack count of words in boot+FAT
		1137	shl ax, 1 ; make bytes count from count of words
		1138	and eax, 0ffffh
		1139	add dword [si+8*3+2], eax
		1140
		1141	; copy first FAT to second copy
		1142	; TODO: BPB_NumFATs !!!!!
		1143	add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!!
		1144	mov byte [si+8*2+3], bh ; bx - begin of FAT
		1145
		1146	mov ax, word [BPB_BytsPerSec]
		1147	shr ax, 1 ; words per sector
		1148	mov cx, word [BPB_FATSz16]
		1149	mul cx
		1150	mov cx, ax ; cx - count of words in FAT
		1151
		1152	push es
		1153	push ds
		1154	pop es
		1155	mov ah, 0x87
		1156	int 0x15
		1157	pop es
		1158	test ah, ah
		1159	jnz sayerr_floppy
		1160
		1161	mov ax, cx
		1162	shl ax, 1
		1163	and eax, 0ffffh ; ax - count of bytes in FAT
		1164	add dword [si+8*3+2], eax
		1165
		1166	; reading RootDir
		1167	; TODO: BPB_NumFATs
		1168	add bx, ax
		1169	add bx, 100h
		1170	and bx, 0ff00h ; bx - place in buffer to write RootDir
		1171	push bx
		1172
		1173	mov bx, word [BPB_BytsPerSec]
		1174	shr bx, 5 ; divide bx by 32
		1175	mov ax, word [BPB_RootEntCnt]
		1176	xor dx, dx
		1177	div bx
		1178	push ax ; ax - count of RootDir sectors
		1179
		1180	mov ax, word [BPB_FATSz16]
		1181	xor cx, cx
		1182	mov cl, byte [BPB_NumFATs]
		1183	mul cx
		1184	add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir
		1185
		1186	mov word [FirstDataSector], ax
		1187	pop bx
		1188	push bx
		1189	add word [FirstDataSector], bx ; Begin of data region of floppy
		1190
		1191	; read RootDir
		1192	call conv_abs_to_THS
		1193	pop ax
		1194	pop bx ; place in buffer to write
		1195	push ax
		1196	call boot_read_floppy ; read RootDir into buffer
		1197	; copy RootDir
		1198	mov byte [si+8*2+3], bh ; from buffer
		1199	pop ax ; ax = count of RootDir sectors
		1200	mov cx, word [BPB_BytsPerSec]
		1201	mul cx
		1202	shr ax, 1
		1203	mov cx, ax ; count of words to copy
		1204	push es
		1205	push ds
		1206	pop es
		1207	mov ah, 0x87
		1208	int 0x15
		1209	pop es
		1210
		1211	mov ax, cx
		1212	shl ax, 1
		1213	and eax, 0ffffh ; ax - count of bytes in RootDir
		1214	add dword [si+8*3+2], eax ; add count of bytes copied
		1215
		1216	; Reading data clusters from floppy
		1217	mov byte [si+8*2+3], bh
		1218	push bx
		1219
		1220	mov di, 2 ; First data cluster
		1221	.read_loop:
		1222	mov bx, di
		1223	shr bx, 1 ; bx+di = di*1.5
		1224	jnc .even
		1225	test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!!
		1226	jmp @f
		1227	.even:
		1228	test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!!
		1229
		1230	@@:
		1231	jz .skip
		1232	; read cluster di
		1233	;.read:
		1234	;conv cluster di to abs. sector ax
		1235	; ax = (N-2) * BPB_SecPerClus + FirstDataSector
		1236	mov ax, di
		1237	sub ax, 2
		1238	xor bx, bx
		1239	mov bl, byte [BPB_SecPerClus]
		1240	mul bx
		1241	add ax, word [FirstDataSector]
		1242	call conv_abs_to_THS
		1243	pop bx
		1244	push bx
		1245	mov al, byte [BPB_SecPerClus] ; number of sectors in cluster
		1246	call boot_read_floppy
		1247	push es
		1248	push ds
		1249	pop es
		1250	pusha
		1251	;
		1252	mov ax, word [BPB_BytsPerSec]
		1253	xor cx, cx
		1254	mov cl, byte [BPB_SecPerClus]
		1255	mul cx
		1256	shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2
		1257	mov cx, ax ; number of words to copy (count words in cluster)
		1258	;
		1259	mov ah, 0x87
		1260	int 0x15 ; copy data
		1261	test ah, ah
		1262	popa
		1263	pop es
		1264	jnz sayerr_floppy
		1265	; skip cluster di
		1266	.skip:
		1267	mov ax, word [BPB_BytsPerSec]
		1268	xor cx, cx
		1269	mov cl, byte [BPB_SecPerClus]
		1270	mul cx
		1271	and eax, 0ffffh ; ax - count of bytes in cluster
		1272	add dword [si+8*3+2], eax
		1273
		1274	mov ax, word [end_of_FAT] ; max cluster number
		1275	pusha
		1276	; draw percentage
		1277	; total clusters: ax
		1278	; read clusters: di
		1279	xchg ax, di
		1280	mov cx, 100
		1281	mul cx
		1282	div di
		1283	aam
		1284	xchg al, ah
		1285	add ax, '00'
		1286	mov si, pros
		1287	cmp [si], ax
		1288	jz @f
		1289	mov [si], ax
		1290	call printplain
		1291	@@:
		1292	popa
		1293	inc di
		1294	cmp di, word [end_of_FAT] ; max number of cluster
		1295	jnz .read_loop
		1296	pop bx ; clear stack
		1297
		1298	ok_sys_on_floppy:
		1299	mov si, backspace2
		1300	call printplain
		1301	mov si, okt
		1302	call printplain
		1303	no_sys_on_floppy:
		1304	xor ax, ax ; reset drive
		1305	xor dx, dx
		1306	int 0x13
		1307	mov dx, 0x3f2 ; floppy motor off
		1308	mov al, 0
		1309	out dx, al
		1310
		1311	if defined extended_primary_loader
		1312	cmp [boot_dev], 1
		1313	jne no_sys_from_primary
		1314	; load kolibri.img using callback from primary loader
		1315	and word [movedesc + 24 + 2], 0
		1316	mov byte [movedesc + 24 + 4], 10h
		1317	; read in blocks of 64K until file is fully loaded
		1318	mov ax, 1
		1319	.repeat:
		1320	mov di, image_file_struct
		1321	call [bootcallback]
		1322	push cs
		1323	pop ds
		1324	push cs
		1325	pop es
		1326	cmp bx, 1
		1327	ja sayerr_badsect
		1328	push bx
		1329	mov si, movedesc
		1330	and word [si + 16 + 2], 0
		1331	mov byte [si + 16 + 4], 4
		1332	mov ah, 87h
		1333	mov cx, 8000h
		1334	int 15h
		1335	pop bx
		1336	test ah, ah
		1337	jnz sayerr_memmove
		1338	inc byte [si + 24 + 4]
		1339	test bx, bx
		1340	jz no_sys_from_primary
		1341	mov ax, 2
		1342	jmp .repeat
		1343	no_sys_from_primary:
		1344	end if
		1345
		1346	; SET GRAPHICS
		1347
		1348	xor ax, ax
		1349	mov es, ax
		1350
2466	Serge	1351	mov ax, [es:BOOT_VESA_MODE] ; vga & 320x200
2288	clevermous	1352	mov bx, ax
		1353	cmp ax, 0x13
		1354	je setgr
		1355	cmp ax, 0x12
		1356	je setgr
		1357	mov ax, 0x4f02 ; Vesa
		1358	setgr:
		1359	int 0x10
		1360	test ah, ah
		1361	mov si, fatalsel
		1362	jnz v_mode_error
		1363	; set mode 0x12 graphics registers:
		1364	cmp bx, 0x12
		1365	jne gmok2
		1366
		1367	mov al, 0x05
		1368	mov dx, 0x03ce
		1369	push dx
		1370	out dx, al ; select GDC mode register
		1371	mov al, 0x02
		1372	inc dx
		1373	out dx, al ; set write mode 2
		1374
		1375	mov al, 0x02
		1376	mov dx, 0x03c4
		1377	out dx, al ; select VGA sequencer map mask register
		1378	mov al, 0x0f
		1379	inc dx
		1380	out dx, al ; set mask for all planes 0-3
		1381
		1382	mov al, 0x08
		1383	pop dx
		1384	out dx, al ; select GDC bit mask register
		1385	; for writes to 0x03cf
		1386	gmok2:
		1387	push ds
		1388	pop es

Subversion Repositories Kolibri OS

(root)/kernel/trunk/boot/bootcode.inc @ 7586 – Rev 3539