;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; BOOTCODE.INC ;;
;; ;;
;; KolibriOS 16-bit loader, ;;
;; based on bootcode for MenuetOS ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision: 709 $
;==========================================================================
;
; 16 BIT FUNCTIONS
;
;==========================================================================
putchar:
; in: al=character
mov ah, 0Eh
mov bh, 0
int 10h
ret
print:
; in: si->string
mov al, 186
call putchar
mov al, ' '
call putchar
printplain:
; in: si->string
pusha
lodsb
@@:
call putchar
lodsb
cmp al, 0
jnz @b
popa
ret
getkey:
; get number in range [bl,bh] (bl,bh in ['0'..'9'])
; in: bx=range
; out: ax=digit (1..9, 10 for 0)
mov ah, 0
int 16h
cmp al, bl
jb getkey
cmp al, bh
ja getkey
push ax
call putchar
pop ax
and ax, 0Fh
jnz @f
mov al, 10
@@:
ret
setcursor:
; in: dl=column, dh=row
mov ah, 2
mov bh, 0
int 10h
ret
macro _setcursor row,column
{
mov dx, row*256 + column
call setcursor
}
boot_read_floppy:
push si
xor si, si
mov ah, 2 ; read
@@:
push ax
int 0x13
pop ax
jnc @f
inc si
cmp si, 10
jb @b
mov si, badsect
sayerr_plain:
call printplain
jmp $
@@:
pop si
ret
;=========================================================================
;
; 16 BIT CODE
;
;=========================================================================
start_of_code:
cld
; \begin{diamond}[02.12.2005]
; if bootloader sets ax = 'KL', then ds:si points to loader block
cmp ax, 'KL'
jnz @f
mov word [cs:cfgmanager.loader_block], si
mov word [cs:cfgmanager.loader_block+2], ds
@@:
; \end{diamond}[02.12.2005]
; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source hard disk
; (see comment to bx_from_load)
cmp cx, 'HA'
jnz no_hd_load
cmp dx,'RD'
jnz no_hd_load
mov word [cs:bx_from_load], bx ; {SPraid}[13.03.2007]
no_hd_load:
; set up stack
mov ax, 3000h
mov ss, ax
mov sp, 0EC00h
; set up segment registers
push cs
pop ds
push cs
pop es
; set videomode
mov ax, 3
int 0x10
if lang eq ru
; Load & set russian VGA font (RU.INC)
mov bp, RU_FNT1 ; RU_FNT1 - First part
mov bx, 1000h ; 768 bytes
mov cx, 30h ; 48 symbols
mov dx, 80h ; 128 - position of first symbol
mov ax, 1100h
int 10h
mov bp, RU_FNT2 ; RU_FNT2 -Second part
mov bx, 1000h ; 512 bytes
mov cx, 20h ; 32 symbols
mov dx, 0E0h ; 224 - position of first symbol
mov ax, 1100h
int 10h
; End set VGA russian font
else if lang eq et
mov bp, ET_FNT ; ET_FNT1
mov bx, 1000h ;
mov cx, 255 ; 256 symbols
xor dx, dx ; 0 - position of first symbol
mov ax, 1100h
int 10h
end if
; draw frames
push 0xb800
pop es
xor di, di
mov ah, 1*16+15
; draw top
mov si, d80x25_top
mov cx, d80x25_top_num * 80
@@:
lodsb
stosw
loop @b
; draw spaces
mov si, space_msg
mov dx, 25 - d80x25_top_num - d80x25_bottom_num
dfl1:
push si
mov cx, 80
@@:
lodsb
stosw
loop @b
pop si
dec dx
jnz dfl1
; draw bottom
mov si, d80x25_bottom
mov cx, d80x25_bottom_num * 80
@@:
lodsb
stosw
loop @b
mov byte [space_msg+80], 0 ; now space_msg is null terminated
_setcursor d80x25_top_num,0
; TEST FOR 386+
mov bx, 0x4000
pushf
pop ax
mov dx, ax
xor ax, bx
push ax
popf
pushf
pop ax
and ax, bx
and dx, bx
cmp ax, dx
jnz cpugood
mov si, not386
sayerr:
call print
jmp $
cpugood:
push 0
popf
sti
; set up esp
movzx esp, sp
push 0
pop es
and word [es:0x9031], 0
; \begin{Mario79}
; find HDD IDE DMA PCI device
; check for PCI BIOS
mov ax, 0xB101
int 0x1A
jc .nopci
cmp edx, 'PCI '
jnz .nopci
; find PCI class code
; class 1 = mass storage
; subclass 1 = IDE controller
; a) class 1, subclass 1, programming interface 0x80
mov ax, 0xB103
mov ecx, 1*10000h + 1*100h + 0x80
xor si, si ; device index = 0
int 0x1A
jnc .found
; b) class 1, subclass 1, programming interface 0x8A
mov ax, 0xB103
mov ecx, 1*10000h + 1*100h + 0x8A
xor si, si ; device index = 0
int 0x1A
jnc .found
; c) class 1, subclass 1, programming interface 0x85
mov ax, 0xB103
mov ecx, 1*10000h + 1*100h + 0x85
xor si, si
int 0x1A
jc .nopci
.found:
; get memory base
mov ax, 0xB10A
mov di, 0x20 ; memory base is config register at 0x20
int 0x1A
jc .nopci
and cx, 0xFFF0 ; clear address decode type
mov [es:0x9031], cx
.nopci:
; \end{Mario79}
mov al, 0xf6 ; Ñáðîñ êëà âèà òóðû, ðà çðåøèòü ñêà Ãèðîâà Ãèå
out 0x60, al
xor cx, cx
wait_loop: ; variant 2
; reading state of port of 8042 controller
in al, 64h
and al, 00000010b ; ready flag
; wait until 8042 controller is ready
loopnz wait_loop
; --------------- APM ---------------------
and word [es:0x9044], 0 ; ver = 0.0 (APM not found)
mov ax, 0x5300
xor bx, bx
int 0x15
jc apm_end ; APM not found
test cx, 2
jz apm_end ; APM 32-bit protected-mode interface not supported
mov [es:0x9044], ax ; Save APM Version
mov [es:0x9046], cx ; Save APM flags
; Write APM ver ----
and ax, 0xf0f
add ax, '00'
mov si, msg_apm
mov [si + 5], ah
mov [si + 7], al
_setcursor 0, 3
call printplain
; ------------------
mov ax, 0x5304 ; Disconnect interface
xor bx, bx
int 0x15
mov ax, 0x5303 ; Connect 32 bit mode interface
xor bx, bx
int 0x15
mov [es:0x9040], ebx
mov [es:0x9050], ax
mov [es:0x9052], cx
mov [es:0x9054], dx
apm_end:
_setcursor d80x25_top_num, 0
; DISPLAY VESA INFORMATION
mov ax, 0x4f00
mov di, 0xa000
int 0x10
cmp ax, 0x004f
mov si, novesa
jnz @f
mov ax, [es:di+4]
add ax, '0'*256+'0'
mov si, vervesa
mov [si+vervesa_off], ah
mov [si+vervesa_off+2], al
@@: call print
; \begin{diamond}[30.11.2005]
cfgmanager:
; settings:
; a) preboot_graph = graphical mode
; preboot_gprobe = probe this mode?
; b) preboot_biosdisk = use BIOS disks through V86 emulation?
; c) preboot_vrrm = use VRR?
; d) preboot_device = from what boot?
mov di, preboot_graph
; check bootloader block
cmp [.loader_block], -1
jz .noloaderblock
les bx, [.loader_block]
cmp byte [es:bx], 1
mov si, loader_block_error
jnz sayerr
test byte [es:bx+1], 1
jz @f
; image in memory present
cmp [di+preboot_device-preboot_graph], 0
jnz @f
mov [di+preboot_device-preboot_graph], 3
@@:
.noloaderblock:
; determine default settings
mov [.bSettingsChanged], 0
cmp byte [di], 0
jnz .preboot_gr_end
mov [di+preboot_gprobe-preboot_graph], 0
mov al, [vervesa+vervesa_off]
cmp al, 'x'
jz .novesa
cmp al, '1'
jz .vesa12
mov [di+preboot_gprobe-preboot_graph], 2
mov al, 3
jmp @f
.vesa12:
mov al, 7
jmp @f
.novesa:
mov al, 10
@@:
mov [di], al
.preboot_gr_end:
; following 8 lines set variables to 1 if its current value is 0
cmp [di+preboot_dma-preboot_graph], 1
adc [di+preboot_dma-preboot_graph], 0
cmp [di+preboot_biosdisk-preboot_graph], 1
adc [di+preboot_biosdisk-preboot_graph], 0
cmp [di+preboot_vrrm-preboot_graph], 1
adc [di+preboot_vrrm-preboot_graph], 0
cmp [di+preboot_device-preboot_graph], 1
adc [di+preboot_device-preboot_graph], 0
; notify user
mov si, linef
call print
mov si, start_msg
call print
mov si, time_msg
call print
; get start time
call .gettime
mov [.starttime], eax
mov word [.timer], .newtimer
mov word [.timer+2], cs
.printcfg:
_setcursor 9,0
mov si, current_cfg_msg
call print
mov si, curvideo_msg
call print
mov al, [preboot_graph]
cmp al, 8
ja .pnovesa
mov dl, al
and eax, 3
mov si, [modes_msg+eax*2]
call printplain
mov si, modevesa20
cmp dl, 4
jbe @f
mov si, modevesa12
@@:
call printplain
cmp dl, 4
ja .x
mov si, probeno_msg
cmp [preboot_gprobe], 2
jnz @f
mov si, probeok_msg
@@:
call printplain
.x:
jmp .c
.pnovesa:
cmp al, 9
mov si, mode9
jz @b
mov si, mode10
jmp @b
.c:
mov si, linef
call printplain
; mov si, dma_msg
; call print
; cmp [preboot_dma], 2
; mov si, on_msg
; jb @f
; mov si, off_msg
; ja @f
; mov si, readonly_msg
;@@:
; call printplain
mov si, usebd_msg
cmp [preboot_biosdisk], 1
call .say_on_off
mov si, vrrm_msg
cmp [preboot_vrrm], 1
call .say_on_off
mov si, preboot_device_msg
call print
mov al, [preboot_device]
and eax, 7
mov si, [preboot_device_msgs+eax*2]
call printplain
.wait:
_setcursor 25,0 ; out of screen
; set timer interrupt handler
cli
push 0
pop es
mov eax, [es:8*4]
mov [.oldtimer], eax
mov eax, [.timer]
mov [es:8*4], eax
sti
; wait for keypressed
mov ah, 0
int 16h
push ax
; restore timer interrupt
push 0
pop es
mov eax, [.oldtimer]
mov [es:8*4], eax
mov [.timer], eax
_setcursor 7,0
mov si, space_msg
call printplain
pop ax
; switch on key
cmp al, 13
jz .continue
or al, 20h
cmp al, 'a'
jz .change_a
cmp al, 'b'
jz .change_b
cmp al, 'c'
jz .change_c
cmp al, 'd'
jnz .wait
_setcursor 15,0
mov si, bdev
call print
mov bx, '14'
call getkey
mov [preboot_device], al
_setcursor 13,0
.d:
mov [.bSettingsChanged], 1
mov si, space_msg
call printplain
_setcursor 15,0
mov cx, 6
@@:
call printplain
loop @b
jmp .printcfg
.change_a:
_setcursor 15,0
mov si, gr_mode
call printplain
mov bx, '09'
call getkey
mov [preboot_graph], al
cmp al, 4
ja @f
mov si, probetext
call printplain
mov bx, '12'
call getkey
mov [preboot_gprobe], al
@@:
_setcursor 10,0
jmp .d
.change_b:
_setcursor 15,0
; mov si, ask_dma
; call print
; mov bx, '13'
; call getkey
; mov [preboot_dma], al
mov si, ask_bd
call print
mov bx, '12'
call getkey
mov [preboot_biosdisk], al
_setcursor 11,0
jmp .d
.change_c:
_setcursor 15,0
mov si, vrrmprint
call print
mov bx, '12'
call getkey
mov [preboot_vrrm], al
_setcursor 12,0
jmp .d
.say_on_off:
pushf
call print
mov si, on_msg
popf
jz @f
mov si, off_msg
@@: jmp printplain
; novesa and vervesa strings are not used at the moment of executing this code
virtual at novesa
.oldtimer dd ?
.starttime dd ?
.bSettingsChanged db ?
.timer dd ?
end virtual
.loader_block dd -1
.gettime:
mov ah, 0
int 1Ah
xchg ax, cx
shl eax, 10h
xchg ax, dx
ret
.newtimer:
push ds
push cs
pop ds
pushf
call [.oldtimer]
pushad
call .gettime
sub eax, [.starttime]
sub ax, 18*5
jae .timergo
neg ax
add ax, 18-1
mov bx, 18
xor dx, dx
div bx
if lang eq ru
; ¯®¤®¦¤¨â¥ 5 ᥪã¤, 4/3/2 ᥪã¤ë, 1 ᥪã¤ã
cmp al, 5
mov cl, ' '
jae @f
cmp al, 1
mov cl, 'ã'
jz @f
mov cl, 'ë'
@@: mov [time_str+9], cl
else if lang eq et
cmp al, 1
ja @f
mov [time_str+9], ' '
mov [time_str+10],' '
@@:
else
; wait 5/4/3/2 seconds, 1 second
cmp al, 1
mov cl, 's'
ja @f
mov cl, ' '
@@: mov [time_str+9], cl
end if
add al, '0'
mov [time_str+1], al
mov si, time_msg
_setcursor 7,0
call print
_setcursor 25,0
popad
pop ds
iret
.timergo:
push 0
pop es
mov eax, [.oldtimer]
mov [es:8*4], eax
mov sp, 0EC00h
.continue:
sti
_setcursor 6,0
mov si, space_msg
call printplain
call printplain
_setcursor 6,0
mov si, loading_msg
call print
_setcursor 15,0
cmp [.bSettingsChanged], 0
jz .load
cmp [.loader_block], -1
jz .load
les bx, [.loader_block]
mov eax, [es:bx+3]
push ds
pop es
test eax, eax
jz .load
push eax
mov si, save_quest
call print
.waityn:
mov ah, 0
int 16h
or al, 20h
cmp al, 'n'
jz .loadc
cmp al, 'y'
jnz .waityn
call putchar
mov byte [space_msg+80], 186
pop eax
push cs
push .cont
push eax
retf
.loadc:
pop eax
.cont:
push cs
pop ds
mov si, space_msg
mov byte [si+80], 0
_setcursor 15,0
call printplain
_setcursor 15,0
.load:
; \end{diamond}[02.12.2005]
; ASK GRAPHICS MODE
movzx ax, [preboot_graph]
push 0
pop es
; address is gr_table+6*(ax-1)
add ax, ax
lea si, [gr_table + eax + eax*2 - 6]
mov bx, [si+0]
mov cx, [si+2]
mov dx, [si+4]
cmp al, 9*2
mov al, 32 ; BPP
jb @f
mov [es:0x9000], al
or dword [es:0x9018], 0xFFFFFFFF; 0x800000
@@:
mov [es:0x9008], bx
mov [es:0x900A], cx
mov [es:0x900C], dx
test bh, bh
jz nov
; USE DEFAULTS OR PROBE
; bx - mode : cx - x size : dx - y size
cmp [preboot_gprobe], 1
jz noprobe
mov bx, 0x100
newprobe:
inc bx
cmp bx, 0x17f
mov si, prnotfnd
jz invalid_video_mode
probemore:
push cx
mov ax, 0x4f01
mov cx, bx
mov di, 0xa000
int 0x10
pop cx
test byte [es:di], 80h ; lfb?
jz newprobe
cmp [es:di+0x12], cx ; x size?
jnz newprobe
cmp [es:di+0x14], dx ; y size?
jnz newprobe
cmp byte [es:di+0x19], 32 ;24
jb newprobe
; add bx, 0100000000000000b
or bh, 40h
mov [es:0x9008], bx
noprobe:
; FIND VESA 2.0 LFB & BPP
mov ax, 0x4f01
mov cx, bx
and cx, 0xfff
mov di, 0xa000
int 0x10
; LFB
mov eax, [es:di+0x28]
mov [es:0x9018], eax
; ---- vbe voodoo
BytesPerLine equ 0x10
mov ax, [es:di+BytesPerLine]
mov [es:0x9001], ax
; BPP
mov al, byte [es:di+0x19]
mov [es:0x9000], al
nov:
cmp al, 24
mov si, bt24
jz bppl
cmp al, 32
mov si, bt32
jz bppl
mov si, btns
invalid_video_mode:
call print
_setcursor (d80x25_top_num+2), 0
mov si, start_msg
call print
jmp cfgmanager.printcfg
bppl:
call print
; FIND VESA 1.2 PM BANK SWITCH ADDRESS
push es
mov ax, 0x4f0A
xor bx, bx
int 0x10
xor eax, eax
mov ax, es
shl eax, 4
movzx ebx, di
add eax, ebx
mov bx, [es:di]
add eax, ebx
pop es
mov [es:0x9014], eax
; GRAPHICS ACCELERATION
; force yes
mov [es:0x901C], byte 1
; DMA ACCESS TO HD
mov al, [preboot_dma]
mov [es:0x901F], al
; VRR_M USE
mov al,[preboot_vrrm]
mov [es:0x9030], al
mov [es:0x901E], byte 1
; BOOT DEVICE
mov al, [preboot_device]
dec al
mov [boot_dev], al
; READ DISKETTE TO MEMORY
; cmp [boot_dev],0
jne no_sys_on_floppy
mov si,diskload
call print
xor ax, ax ; reset drive
xor dx, dx
int 0x13
; do we boot from CD-ROM?
mov ah, 41h
mov bx, 55AAh
xor dx, dx
int 0x13
jc .nocd
cmp bx, 0AA55h
jnz .nocd
mov ah, 48h
push ds
push es
pop ds
mov si, 0xa000
mov word [si], 30
int 0x13
pop ds
jc .nocd
push ds
lds si, [es:si+26]
test byte [ds:si+10], 40h
pop ds
jz .nocd
; yes - read all floppy by 18 sectors
mov cx, 0x0001 ; startcyl,startsector
.a1:
push cx dx
mov al, 18
mov bx, 0xa000
call boot_read_floppy
mov si, movedesc
push es
push ds
pop es
mov cx, 256*18
mov ah, 0x87
int 0x15
pop es
pop dx cx
test ah, ah
jnz sayerr_floppy
add dword [si+8*3+2], 512*18
inc dh
cmp dh, 2
jnz .a1
mov dh, 0
inc ch
cmp ch, 80
jae ok_sys_on_floppy
pusha
mov al, ch
shr ch, 2
add al, ch
aam
xchg al, ah
add ax, '00'
mov si, pros
mov [si], ax
call printplain
popa
jmp .a1
.nocd:
; no - read only used sectors from floppy
; now load floppy image to memory
; at first load boot sector and first FAT table
mov cx, 0x0001 ; startcyl,startsector
xor dx, dx ; starthead,drive
mov al, 1+9 ; no of sectors to read
mov bx, 0xB000 ; es:bx -> data area
call boot_read_floppy
; and copy them to extended memory
mov si, movedesc
mov [si+8*2+3], bh
push es
push ds
pop es
mov cx, 256*10
mov ah, 0x87
int 0x15
test ah, ah
jz @f
sayerr_floppy:
mov dx, 0x3f2
mov al, 0
out dx, al
mov si, memmovefailed
jmp sayerr_plain
@@:
add dword [si+8*3+2], 512*10
; copy FAT to second copy
mov byte [si+8*2+3], 0xB2
mov cx, 256*9
mov ah, 0x87
int 0x15
pop es
test ah, ah
jnz sayerr_floppy
add dword [si+8*3+2], 512*9
; calculate total number of sectors to read
mov ax, 1+9+14 ; boot+FAT+root
mov di, 0xB203
.calc_loop:
test word [es:di], 0xFFF
jz @f
inc ax
@@:
test word [es:di+1], 0xFFF0
jz @f
inc ax
@@:
add di, 3
cmp di, 0xB200+1440*3
jb .calc_loop
push ax
mov bp, 1+9 ; already read sectors
; now read rest
mov byte [si+8*2+3], 0xA0
mov di, 2-14 ; absolute sector-31
mov cx, 0x0002 ; cylinder=0, sector=2
mov dx, 0x0100 ; head=1, disk=0
.read_loop:
; determine whether sector must be read
cmp di, 2
jl .read
mov bx, di
shr bx, 1
jnc .even
test word [es:bx+di+0xB200], 0xFFF0
jmp @f
.even:
test word [es:bx+di+0xB200], 0xFFF
@@:
jz .skip
.read:
mov bx, 0xA000
mov al, 1 ; 1 sector
call boot_read_floppy
inc bp
push es
push ds
pop es
pusha
mov cx, 256
mov ah, 0x87
int 0x15
test ah, ah
popa
pop es
jnz sayerr_floppy
.skip:
add dword [si+8*3+2], 512
inc cx
cmp cl, 19
jnz @f
mov cl, 1
inc dh
cmp dh, 2
jnz @f
mov dh, 0
inc ch
@@:
pop ax
push ax
pusha
; draw percentage
; total sectors: ax
; read sectors: bp
xchg ax, bp
mov cx, 100
mul cx
div bp
aam
xchg al, ah
add ax, '00'
mov si, pros
cmp [si], ax
jz @f
mov [si], ax
call printplain
@@:
popa
inc di
cmp di, 2880-31
jnz .read_loop
; mov cx, 0x0001 ; startcyl,startsector
; xor dx, dx ; starthead,drive
; push word 80*2 ; read no of sect
; reads:
; pusha
; xor si,si
; newread:
; mov bx,0xa000 ; es:bx -> data area
; mov ax,0x0200+18 ; read, no of sectors to read
; int 0x13
; test ah, ah
; jz goodread
; inc si
; cmp si,10
; jnz newread
; mov si,badsect-0x10000
;sayerr_plain:
; call printplain
; jmp $
; goodread:
; ; move -> 1mb
; mov si,movedesc-0x10000
; push es
; push ds
; pop es
; mov cx,256*18
; mov ah,0x87
; int 0x15
; pop es
;
; test ah,ah ; was the move successfull ?
; je goodmove
; mov dx,0x3f2 ; floppy motor off
; mov al,0
; out dx,al
; mov si,memmovefailed-0x10000
; jmp sayerr_plain
; goodmove:
;
; add dword [movedesc-0x10000+0x18+2], 512*18
; popa
; inc dh
; cmp dh,2
; jnz bb2
; mov dh,0
; inc ch
; pusha ; print prosentage
; mov si,pros-0x10000
; shr ch, 2
; mov al, '5'
; test ch, 1
; jnz @f
; mov al, '0'
;@@:
; mov [si+1], al
; shr ch, 1
; add ch, '0'
; mov [si], ch
; call printplain
; popa
; bb2:
; pop ax
; dec ax
; push ax
; jnz reads
; readdone:
; pop ax
ok_sys_on_floppy:
mov si, backspace2
call printplain
mov si, okt
call printplain
no_sys_on_floppy:
xor ax, ax ; reset drive
xor dx, dx
int 0x13
mov dx, 0x3f2 ; floppy motor off
mov al, 0
out dx, al
; SET GRAPHICS
xor ax, ax
mov es, ax
mov ax, [es:0x9008] ; vga & 320x200
mov bx, ax
cmp ax, 0x13
je setgr
cmp ax, 0x12
je setgr
mov ax, 0x4f02 ; Vesa
setgr:
int 0x10
test ah, ah
mov si, fatalsel
jnz sayerr
; set mode 0x12 graphics registers:
cmp bx, 0x12
jne gmok2
mov al, 0x05
mov dx, 0x03ce
push dx
out dx, al ; select GDC mode register
mov al, 0x02
inc dx
out dx, al ; set write mode 2
mov al, 0x02
mov dx, 0x03c4
out dx, al ; select VGA sequencer map mask register
mov al, 0x0f
inc dx
out dx, al ; set mask for all planes 0-3
mov al, 0x08
pop dx
out dx, al ; select GDC bit mask register
; for writes to 0x03cf
gmok2:
push ds
pop es