;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; BOOTCODE.INC ;;
;; ;;
;; KolibriOS 16-bit loader, ;;
;; based on bootcode for MenuetOS ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;==========================================================================
;
; 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]
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]
; 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
mov dx,0h ; 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 cx, 25 - d80x25_top_num - d80x25_bottom_num
dfl1:
push cx
push si
mov cx, 80
@@:
lodsb
stosw
loop @b
pop si
pop cx
loop 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:
; 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
mov si, 0 ; 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
mov si, 0 ; 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
mov si, 0
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 ---------------------
push 0
pop es
mov 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
_setcursor d80x25_top_num,0
; ------------------
mov ax, 0x5304 ; Disconnect interface
xor bx, bx
int 0x15
mov ax, 0x5303 ; Connect 32 bit mode interface
xor bx, bx
int 0x15
push 0
pop es
mov [es:0x9050], ax
mov [es:0x9052], cx
mov [es:0x9040], dx
; init selectors
; movzx eax, ax ; real-mode segment base address of protected-mode 32-bit code segment
; shl eax, 4
; mov [dword apm_code_32 + 2], ax
; shr eax, 16
; mov [dword apm_code_32 + 4], al
; movzx ecx, cx ; real-mode segment base address of protected-mode 16-bit code segment
; shl ecx, 4
; mov [dword apm_code_16 + 2], cx
; shr ecx, 16
; mov [dword apm_code_16 + 4], cl
; movzx edx, dx ; real-mode segment base address of protected-mode 16-bit data segment
; shl edx, 4
; mov [dword apm_data_16 + 2], dx
; shr edx, 16
; mov [dword apm_data_16 + 4], dl
; mov [es : 0x9040], ebx ; offset of APM entry point
apm_end:
; -----------------------------------------
; DISPLAY VESA INFORMATION
push 0
pop es
mov ax,0x4f00
mov di,0xa000
int 0x10
cmp ax,0x004f
mov si, novesa
jnz @f
mov bx, word [es:di+0x12]
shl ebx,16
mov [es:0x9050], ebx
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_dma_write = use DMA write?
; 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:
cmp [di+preboot_dma_write-preboot_graph], 1
adc [di+preboot_dma_write-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
cmp [preboot_dma_write], 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, 3
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,'13'
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, '12'
call getkey
mov [preboot_dma_write], 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
@@: call printplain
ret
; 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
mov 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 sayerr
probemore:
push cx
mov ax,0x4f01
mov cx,bx
and cx,0xfff
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
jmp sayerr
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 WRITE
mov al, [preboot_dma_write]
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
; 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
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