mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-25 08:06:49 +03:00
450 lines
9.0 KiB
NASM
450 lines
9.0 KiB
NASM
;
|
|
; MenuesOS Boot Loader
|
|
;
|
|
; Author: Trans
|
|
; Date: 14.02.03
|
|
; Version: 1.0
|
|
;
|
|
; Current Version: 1.1
|
|
; Date of modification: 11.06.03
|
|
;
|
|
; Compile with FASM
|
|
;
|
|
|
|
;--------Code------------
|
|
org 100h
|
|
|
|
start:
|
|
push cs
|
|
pop ds
|
|
mov ax,0003h
|
|
int 10h
|
|
|
|
mov dx,title
|
|
call print
|
|
mov dx,title_1
|
|
call print
|
|
; mov dx,mes1
|
|
; call print
|
|
|
|
;-------open Msetup.exe--------------
|
|
mov dx,img0
|
|
call file_open
|
|
cmp ax,00h
|
|
je loader_next_file_search_0
|
|
mov [handle],ax
|
|
mov [foffset],dword 00h
|
|
jmp loader_continue
|
|
loader_next_file_search_0:
|
|
mov dx,img1
|
|
call file_open
|
|
cmp ax,00h
|
|
je loader_next_file_search_00
|
|
mov [handle],ax
|
|
jmp loader_continue
|
|
loader_next_file_search_00:
|
|
mov dx,img2
|
|
call file_open
|
|
cmp ax,00h
|
|
je loader_next_file_search_01
|
|
mov [handle],ax
|
|
mov [foffset],dword 00h
|
|
jmp loader_continue
|
|
loader_next_file_search_01:
|
|
mov dx,img3
|
|
call file_open
|
|
cmp ax,00h
|
|
je loader_not_find_file
|
|
mov [handle],ax
|
|
mov [foffset],dword 00h
|
|
loader_continue:
|
|
|
|
;******* Load IMAGE in memory***************************************************
|
|
mov dx,start_img_read
|
|
call print
|
|
|
|
mov bx,ax
|
|
xor cx,cx ; cx:dx - offset in bytes (cx*65535+dx)
|
|
xor edx,edx
|
|
call file_offset
|
|
mov [image_counter],0
|
|
@@_1:
|
|
mov bx,[handle]
|
|
mov dx,buffer ;ds:dx - buffer
|
|
mov cx,512*96
|
|
call file_read
|
|
|
|
push fs
|
|
xor ax,ax ;AX = 0
|
|
mov fs,ax ;DS = AX = 0 ..Èñïîëüçóåò ËÈÍÅÉÍÎÅ ÀÄÐÅÑÎÂÀÍÈÅ!
|
|
mov ecx,512*96
|
|
mov si,buffer
|
|
movzx edi,[image_counter]
|
|
imul edi,48*1024
|
|
add edi,0x100000
|
|
@@:
|
|
mov al,[si]
|
|
mov [fs:edi],al
|
|
inc edi
|
|
inc esi
|
|
loop @b
|
|
pop fs
|
|
|
|
mov dx,progress_img_read
|
|
call print
|
|
|
|
inc [image_counter]
|
|
mov bx,[handle] ;ax
|
|
movzx edx,[image_counter]
|
|
imul edx,48*1024
|
|
mov ecx,edx
|
|
shr ecx,16
|
|
call file_offset
|
|
cmp [image_counter],30
|
|
jne @@_1
|
|
|
|
mov dx,end_img_read
|
|
call print
|
|
|
|
mov dx,start_kernel_read
|
|
call print
|
|
;*******************************************************************************
|
|
;-------Move pointer to boot-sector--
|
|
mov bx,[handle] ;ax
|
|
xor cx,cx
|
|
mov edx,[foffset]
|
|
call file_offset
|
|
|
|
;---------Read boot-sector-----------
|
|
mov bx,[handle]
|
|
mov dx,buffer
|
|
mov cx,512
|
|
call file_read
|
|
|
|
;--------Read parametrs--------------
|
|
mov ax,[buffer+0bh]
|
|
mov [SectSize],ax
|
|
mov al,[buffer+0dh]
|
|
mov [ClustSect],al
|
|
mov ax,[buffer+0eh]
|
|
mov [ResSect],ax
|
|
add ax,[ResRgn]
|
|
mov [FATRgn],ax
|
|
mov al,[buffer+10h]
|
|
mov [FATCnt],al
|
|
xor bx,bx
|
|
mov bl,al
|
|
mov ax,[buffer+11h]
|
|
mov [RootEnt],ax
|
|
shr ax,4 ; ax=ax*32/512
|
|
mov [RootDirRgnSz],ax
|
|
mov ax,[buffer+16h]
|
|
mov [FATSect],ax
|
|
mul bx
|
|
mov [FATRgnSz],ax
|
|
add ax,[FATRgn]
|
|
mov [RootDirRgn],ax
|
|
add ax,[RootDirRgnSz]
|
|
mov [DataRgn],ax
|
|
|
|
;------Read FATs and RootDir---------
|
|
xor eax,eax
|
|
xor edx,edx
|
|
mov ax,[FATRgn]
|
|
mul [SectSize]
|
|
add eax,[foffset]
|
|
mov cx,dx
|
|
mov dx,ax
|
|
mov bx,[handle]
|
|
call file_offset
|
|
mov ax,[FATRgnSz]
|
|
mul [SectSize]
|
|
mov cx,ax
|
|
mov dx,buffer
|
|
mov bx,[handle]
|
|
call file_read
|
|
mov cx,[RootEnt]
|
|
shl cx,5
|
|
mov dx,Root
|
|
mov bx,[handle]
|
|
call file_read
|
|
|
|
;-------Search entry pointer in RootDir---------
|
|
push ds
|
|
pop es
|
|
mov cx,[RootEnt]
|
|
mov bx,Root
|
|
loader_loc_00:
|
|
push cx
|
|
mov cx,11
|
|
mov di,bx
|
|
mov si,kernel
|
|
repe cmpsb
|
|
jnz loader_notfound
|
|
pop cx
|
|
jmp loader_find
|
|
loader_notfound:
|
|
pop cx
|
|
add bx,32
|
|
loop loader_loc_00
|
|
loader_find:
|
|
|
|
mov ax,[bx+1ah]
|
|
mov [FirstClust],ax
|
|
mov eax,[bx+1ch]
|
|
mov [filesize],eax
|
|
|
|
;------Read Kernel----------------------
|
|
call read_kernel
|
|
|
|
;---------------------------------------
|
|
|
|
mov bx,[handle]
|
|
call file_close
|
|
;;;;;;;;;;;;;;;;;;;;;;
|
|
jmp loader_yes
|
|
;;;;;;;;;;;;;;;;;;;;;;
|
|
; mov dx,mes2
|
|
; call print
|
|
;loader_key:
|
|
; mov ah,00h
|
|
; int 16h
|
|
; cmp al,1bh ;ESC
|
|
; je loader_no
|
|
; cmp al,6eh ;'n'
|
|
; je loader_no
|
|
; cmp al,4eh ;'N'
|
|
; je loader_no
|
|
; cmp al,79h ;'y'
|
|
; je loader_yes
|
|
; cmp al,59h ;'Y'
|
|
; je loader_yes
|
|
; jmp loader_key
|
|
|
|
loader_not_find_file:
|
|
mov dx,mes4
|
|
call print
|
|
jmp loader_exit
|
|
|
|
loader_yes:
|
|
mov dx,yes
|
|
call print
|
|
mov ax,7000h
|
|
mov es,ax
|
|
mov si,move_kernel
|
|
xor di,di
|
|
mov cx,len_mk
|
|
rep movsb
|
|
jmp far 7000h:0000h
|
|
; jmp loader_exit
|
|
loader_no:
|
|
mov dx,no
|
|
call print
|
|
|
|
loader_exit:
|
|
mov dx,mes3
|
|
call print
|
|
retn
|
|
;----Subprogramms--------
|
|
|
|
print:
|
|
; in: dx - offset of ASCII string
|
|
; out:
|
|
mov ah,09h
|
|
int 21h
|
|
retn
|
|
|
|
file_open:
|
|
; in: ds:dx - offset of ASCIIZ filename string
|
|
; out: ax - file handle (ax=0 - not found)
|
|
mov ax,3d00h
|
|
int 21h
|
|
jnc fo_exit
|
|
xor ax,ax
|
|
fo_exit:
|
|
retn
|
|
|
|
file_close:
|
|
; in: bx - file handle
|
|
; out:
|
|
mov ah,3eh
|
|
int 21h
|
|
retn
|
|
|
|
file_read:
|
|
; in: bx - file handle
|
|
; ds:dx - buffer
|
|
; cx - numbers of bytes
|
|
; out:
|
|
mov ah,3fh
|
|
int 21h
|
|
retn
|
|
|
|
file_offset:
|
|
; in: bx - file handle
|
|
; cx:dx - offset in bytes (cx*65535+dx)
|
|
; out:
|
|
mov ax,4200h
|
|
int 21h
|
|
retn
|
|
|
|
sector_find:
|
|
; in: ax - No of Cluster
|
|
; out: ax - 1st sector of Cluster
|
|
dec ax
|
|
dec ax
|
|
push bx
|
|
xor bx,bx
|
|
mov bl,[ClustSect]
|
|
mul bx
|
|
pop bx
|
|
add ax,[DataRgn]
|
|
retn
|
|
|
|
read_cluster:
|
|
; in: ax - No of Cluster
|
|
; ds:dx - buffer
|
|
; out:
|
|
push dx
|
|
call sector_find
|
|
push ax
|
|
xor eax,eax
|
|
xor ebx,ebx
|
|
pop ax
|
|
mov bx,[SectSize]
|
|
mul ebx
|
|
add eax,[foffset]
|
|
mov dx,ax
|
|
shr eax,16
|
|
mov cx,ax
|
|
mov bx,[handle]
|
|
call file_offset
|
|
xor ax,ax
|
|
mov al,[ClustSect]
|
|
mul [SectSize]
|
|
mov cx,ax
|
|
mov bx,[handle]
|
|
pop dx
|
|
call file_read
|
|
retn
|
|
|
|
read_kernel:
|
|
; in:
|
|
; out:
|
|
mov ax,8000h
|
|
mov es,ax ;8000:0000 = 80000h - Temporal location of kernel
|
|
xor di,di ;
|
|
mov ax,[FirstClust]
|
|
mov bp,ax
|
|
rk_loc_00:
|
|
push es
|
|
mov dx,Root
|
|
call read_cluster
|
|
xor ax,ax ; Moving cluster to area of location kernel
|
|
mov al,[ClustSect] ;
|
|
mul [SectSize] ;
|
|
mov cx,ax ;
|
|
pop es ;
|
|
mov si,Root ;
|
|
rep movsb ;
|
|
cmp di,00h
|
|
jne rk_continue
|
|
mov ax,es
|
|
add ax,1000h
|
|
mov es,ax
|
|
rk_continue:
|
|
mov ax,bp
|
|
cmp ax,0ff8h
|
|
jae rk_done
|
|
shl ax,1 ; Val=Clustrer*1,5 //(Cluster*3)/2
|
|
add ax,bp ;
|
|
shr ax,1 ;
|
|
mov bx,ax
|
|
add bx,buffer
|
|
mov ax,[bx]
|
|
bt bp,0
|
|
jc rk_nechet
|
|
and ax,0fffh
|
|
jmp rk_chet
|
|
rk_nechet:
|
|
shr ax,4
|
|
rk_chet:
|
|
mov bp,ax
|
|
jmp rk_loc_00
|
|
rk_done:
|
|
retn
|
|
|
|
move_kernel:
|
|
; in:
|
|
; out:
|
|
mov ax,8000h
|
|
mov ds,ax
|
|
mov ax,1000h
|
|
mov es,ax
|
|
xor si,si
|
|
xor di,di
|
|
mov cx,8000h
|
|
rep movsb
|
|
mov cx,8000h
|
|
rep movsb
|
|
mov bx,es
|
|
add bx,1000h
|
|
mov es,bx
|
|
mov bx,ds
|
|
add bx,1000h
|
|
mov ds,bx
|
|
mov cx,8000h
|
|
rep movsb
|
|
mov cx,8000h
|
|
rep movsb
|
|
mov ax,1000h
|
|
mov ds,ax
|
|
mov es,ax
|
|
jmp far 1000h:0000h
|
|
retn
|
|
len_mk=$-move_kernel
|
|
|
|
;--------Data------------
|
|
title db 'KolibriOS\MenuetOS Boot Loader. Ver.1.2 Copyright(C) 2003, Trans.',0ah,0dh,0ah,0dh,'$'
|
|
title_1 db 'Addition 2005-2006 by Mario79 - for boot Flash RAM.',0ah,0dh,0ah,0dh,'$'
|
|
;mes1 db 'It is alternative of boot from floppy.',0ah,0dh
|
|
; db 'You MUST select HD booting !!!',0ah,0dh,0ah,0dh,'$'
|
|
;mes2 db 'Are you sure loading MeOS? (Y/N):','$'
|
|
start_img_read db 'Read IMG file: ','$'
|
|
progress_img_read db '#','$'
|
|
end_img_read db 0ah,0dh,0ah,0dh,'$'
|
|
start_kernel_read db 'Start kernel read ','$'
|
|
yes db 'Y','$'
|
|
no db 'N','$'
|
|
mes3 db 0ah,0dh,0ah,0dh,'See you later ...',0ah,0dh,'$'
|
|
mes4 db 0ah,0dh,0ah,0dh,'Not Found: '
|
|
img0 db 'kolibri\kolibri.img',0,', '
|
|
img1 db 'msetup.exe',0,', '
|
|
img2 db 'menuet.img',0,', '
|
|
img3 db 'kolibri.img',0,' :($'
|
|
image_counter db 0
|
|
kernel db 'KERNEL MNT',0
|
|
handle dw ?
|
|
foffset dd 20480
|
|
SectSize dw ? ; +0bh
|
|
ClustSect db ? ; +0dh
|
|
ResSect dw ? ; +0eh
|
|
FATCnt db ? ; +10h
|
|
RootEnt dw ? ; +11h
|
|
FATSect dw ? ; +16h
|
|
filesize dd ? ; +1ch
|
|
FirstClust dw ? ; +1ah
|
|
|
|
ResRgn dw 0 ; = VolumeStart
|
|
FATRgn dw ? ; = ResRgn+ResSect
|
|
RootDirRgn dw ? ; = FATRgn+(FATCnt*FATSect)
|
|
DataRgn dw ? ; = RootDirRgn+((RootEnt*32)/SectSize)
|
|
ResRgnSz dw ? ; = ResSect
|
|
FATRgnSz dw ? ; = FATCnt*FATSect
|
|
RootDirRgnSz dw ? ; = (RootEnt*32)/SectSize
|
|
;First sector of cluster N = DataRgn+((N-2)*ClustSect)
|
|
buffer:
|
|
org 3000h
|
|
Root:
|
|
|