forked from KolibriOS/kolibrios
747 lines
15 KiB
PHP
747 lines
15 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
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;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; BOOTCODE.INC ;;
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;; ;;
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;; KolibriOS 16-bit loader, ;;
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;; based on bootcode for MenuetOS ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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;==========================================================================
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;
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; 16 BIT FUNCTIONS
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;
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;==========================================================================
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putchar:
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; in: al=character
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mov ah, 0Eh
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mov bh, 0
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int 10h
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ret
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print:
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; in: si->string
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mov al, 186
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call putchar
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mov al, ' '
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call putchar
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printplain:
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; in: si->string
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pusha
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lodsb
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@@:
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call putchar
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lodsb
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test al,al
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jnz @b
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popa
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ret
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setcursor:
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; in: dl=column, dh=row
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mov ah, 2
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mov bh, 0
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int 10h
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ret
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macro _setcursor row,column
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{
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mov dx, row*256 + column
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call setcursor
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}
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boot_read_floppy:
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push si
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xor si, si
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mov ah, 2 ; read
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@@:
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push ax
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int 0x13
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pop ax
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jnc @f
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inc si
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cmp si, 10
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jnb $
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@@:
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pop si
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ret
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sayerr_plain:
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call printplain
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jmp $
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sayerr:
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call print
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jmp $
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; convert abs. sector number (AX) to BIOS T:H:S
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; sector number = (abs.sector%BPB_SecPerTrk)+1
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; pre.track number = (abs.sector/BPB_SecPerTrk)
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; head number = pre.track number%BPB_NumHeads
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; track number = pre.track number/BPB_NumHeads
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; Return: cl - sector number
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; ch - track number
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; dl - drive number (0 = a:)
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; dh - head number
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conv_abs_to_THS:
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push bx
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mov bx,word [BPB_SecPerTrk]
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xor dx,dx
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div bx
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inc dx
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mov cl, dl ; cl = sector number
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mov bx,word [BPB_NumHeads]
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xor dx,dx
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div bx
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; !!!!!!! ax = track number, dx = head number
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mov ch,al ; ch=track number
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xchg dh,dl ; dh=head number
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mov dl,0 ; dl=0 (drive 0 (a:))
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pop bx
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retn
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; needed variables
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BPB_SecPerTrk dw 0 ; sectors per track
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BPB_NumHeads dw 0 ; number of heads
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BPB_FATSz16 dw 0 ; size of FAT
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BPB_RootEntCnt dw 0 ; count of root dir. entries
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BPB_BytsPerSec dw 0 ; bytes per sector
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BPB_RsvdSecCnt dw 0 ; number of reserved sectors
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BPB_TotSec16 dw 0 ; count of the sectors on the volume
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BPB_SecPerClus db 0 ; number of sectors per cluster
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BPB_NumFATs db 0 ; number of FAT tables
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abs_sector_adj dw 0 ; adjustment to make abs. sector number
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end_of_FAT dw 0 ; end of FAT table
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FirstDataSector dw 0 ; begin of data
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;=========================================================================
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;
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; 16 BIT CODE
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;
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;=========================================================================
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include 'bootvesa.inc' ;Include source for boot vesa
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start_of_code:
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cld
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; \begin{diamond}[02.12.2005]
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; if bootloader sets ax = 'KL', then ds:si points to loader block
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cmp ax, 'KL'
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jnz @f
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mov word [cs:cfgmanager.loader_block], si
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mov word [cs:cfgmanager.loader_block+2], ds
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@@:
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; \end{diamond}[02.12.2005]
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; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source hard disk
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; (see comment to bx_from_load)
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cmp cx, 'HA'
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jnz no_hd_load
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cmp dx,'RD'
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jnz no_hd_load
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mov word [cs:bx_from_load], bx ; {SPraid}[13.03.2007]
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no_hd_load:
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; set up stack
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mov ax, 3000h
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mov ss, ax
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mov sp, 0EC00h
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; set up segment registers
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push cs
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pop ds
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push cs
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pop es
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; set videomode
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mov ax, 3
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int 0x10
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; draw frames
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push 0xb800
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pop es
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xor di, di
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mov ah, 1*16+15
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; draw top
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mov si, d80x25_top
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mov cx, d80x25_top_num * 80
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@@:
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lodsb
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stosw
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loop @b
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; draw spaces
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mov si, space_msg
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mov dx, 25 - d80x25_top_num - d80x25_bottom_num
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dfl1:
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push si
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mov cx, 80
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@@:
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lodsb
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stosw
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loop @b
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pop si
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dec dx
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jnz dfl1
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; draw bottom
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mov si, d80x25_bottom
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mov cx, d80x25_bottom_num * 80
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@@:
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lodsb
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stosw
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loop @b
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mov byte [space_msg+80], 0 ; now space_msg is null terminated
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_setcursor d80x25_top_num,0
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cpugood:
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push 0
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popf
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sti
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; set up esp
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movzx esp, sp
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push 0
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pop es
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and word [es:0x9031], 0
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; \begin{Mario79}
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; find HDD IDE DMA PCI device
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; check for PCI BIOS
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mov ax, 0xB101
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int 0x1A
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jc .nopci
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cmp edx, 'PCI '
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jnz .nopci
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; find PCI class code
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; class 1 = mass storage
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; subclass 1 = IDE controller
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; a) class 1, subclass 1, programming interface 0x80
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mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x80
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xor si, si ; device index = 0
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int 0x1A
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jnc .found
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; b) class 1, subclass 1, programming interface 0x8A
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mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x8A
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xor si, si ; device index = 0
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int 0x1A
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jnc .found
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; c) class 1, subclass 1, programming interface 0x85
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mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x85
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xor si, si
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int 0x1A
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jc .nopci
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.found:
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; get memory base
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mov ax, 0xB10A
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mov di, 0x20 ; memory base is config register at 0x20
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int 0x1A
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jc .nopci
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and cx, 0xFFF0 ; clear address decode type
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mov [es:0x9031], cx
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.nopci:
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; \end{Mario79}
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; --------------- APM ---------------------
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and word [es:0x9044], 0 ; ver = 0.0 (APM not found)
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mov ax, 0x5300
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xor bx, bx
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int 0x15
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jc apm_end ; APM not found
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test cx, 2
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jz apm_end ; APM 32-bit protected-mode interface not supported
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mov [es:0x9044], ax ; Save APM Version
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mov [es:0x9046], cx ; Save APM flags
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; Write APM ver ----
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and ax, 0xf0f
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add ax, '00'
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mov si, msg_apm
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mov [si + 5], ah
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mov [si + 7], al
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_setcursor 0, 3
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call printplain
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; ------------------
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mov ax, 0x5304 ; Disconnect interface
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xor bx, bx
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int 0x15
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mov ax, 0x5303 ; Connect 32 bit mode interface
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xor bx, bx
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int 0x15
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mov [es:0x9040], ebx
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mov [es:0x9050], ax
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mov [es:0x9052], cx
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mov [es:0x9054], dx
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apm_end:
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_setcursor d80x25_top_num, 0
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;CHECK current of code
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cmp [cfgmanager.loader_block], -1
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jz noloaderblock
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les bx, [cfgmanager.loader_block]
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cmp byte [es:bx], 1
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mov si, loader_block_error
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jnz sayerr
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push 0
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pop es
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noloaderblock:
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; DISPLAY VESA INFORMATION
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call print_vesa_info
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call calc_vmodes_table
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call check_first_parm ;check and enable cursor_pos
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; \begin{diamond}[30.11.2005]
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cfgmanager:
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; settings:
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; a) preboot_graph = graphical mode
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; preboot_gprobe = probe this mode?
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; b) preboot_dma = use DMA access?
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; c) preboot_vrrm = use VRR?
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; d) preboot_device = from what boot?
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; determine default settings
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; mov [.bSettingsChanged], 0
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;.preboot_gr_end:
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mov di, preboot_device
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; if image in memory is present and [preboot_device] is uninitialized,
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; set it to use this preloaded image
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cmp byte [di], 0
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jnz .preboot_device_inited
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cmp [.loader_block], -1
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jz @f
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les bx, [.loader_block]
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test byte [es:bx+1], 1
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jz @f
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mov byte [di], 3
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jmp .preboot_device_inited
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@@:
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; otherwise, set [preboot_device] to 1 (default value - boot from floppy)
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mov byte [di], 1
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.preboot_device_inited:
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; following 4 lines set variables to 1 if its current value is 0
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cmp byte [di+preboot_dma-preboot_device], 1
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adc byte [di+preboot_dma-preboot_device], 0
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cmp byte [di+preboot_biosdisk-preboot_device], 1
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adc byte [di+preboot_biosdisk-preboot_device], 0
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_setcursor 7,0
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mov si, space_msg
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call printplain
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; pop ax ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ??
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jmp .continue
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.loader_block dd -1
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.continue:
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sti
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_setcursor 6,0
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mov si, space_msg
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call printplain
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call printplain
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_setcursor 6,0
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mov si, loading_msg
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call print
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_setcursor 15,0
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jmp .load
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.loadc:
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pop eax
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.cont:
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push cs
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pop ds
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mov si, space_msg
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mov byte [si+80], 0
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_setcursor 15,0
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call printplain
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_setcursor 15,0
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.load:
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; ASK GRAPHICS MODE
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call set_vmode
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; GRAPHICS ACCELERATION
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; force yes
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mov [es:0x901C], byte 1
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; DMA ACCESS TO HD
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mov al, [preboot_dma]
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mov [es:0x901F], al
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; VRR_M USE
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mov al,[preboot_vrrm]
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mov [es:0x9030], al
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mov [es:0x901E], byte 1
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; BOOT DEVICE
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mov al, [preboot_device]
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dec al
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mov [boot_dev], al
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; GET MEMORY MAP
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include 'detect/biosmem.inc'
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; READ DISKETTE TO MEMORY
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cmp [boot_dev],0
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jne no_sys_on_floppy
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mov si,diskload
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call print
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xor ax, ax ; reset drive
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xor dx, dx
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int 0x13
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; do we boot from CD-ROM?
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mov ah, 41h
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mov bx, 55AAh
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xor dx, dx
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int 0x13
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jc .nocd
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cmp bx, 0AA55h
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jnz .nocd
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mov ah, 48h
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push ds
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push es
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pop ds
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mov si, 0xa000
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mov word [si], 30
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int 0x13
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pop ds
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jc .nocd
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push ds
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lds si, [es:si+26]
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test byte [ds:si+10], 40h
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pop ds
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jz .nocd
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; yes - read all floppy by 18 sectors
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; TODO: !!!! read only first sector and set variables !!!!!
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; ...
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; TODO: !!! then read flippy image track by track
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mov cx, 0x0001 ; startcyl,startsector
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.a1:
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push cx dx
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mov al, 18
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mov bx, 0xa000
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call boot_read_floppy
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mov si, movedesc
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push es
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push ds
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pop es
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mov cx, 256*18
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mov ah, 0x87
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int 0x15
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pop es
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pop dx cx
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test ah, ah
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jnz sayerr_floppy
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add dword [si+8*3+2], 512*18
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inc dh
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cmp dh, 2
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jnz .a1
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mov dh, 0
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inc ch
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cmp ch, 80
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jae ok_sys_on_floppy
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pusha
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mov al, ch
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shr ch, 2
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add al, ch
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aam
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xchg al, ah
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add ax, '00'
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mov si, pros
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mov [si], ax
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call printplain
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popa
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jmp .a1
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.nocd:
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; no - read only used sectors from floppy
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; now load floppy image to memory
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; at first load boot sector and first FAT table
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; read only first sector and fill variables
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mov cx, 0x0001 ; first logical sector
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xor dx, dx ; head = 0, drive = 0 (a:)
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mov al, 1 ; read one sector
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mov bx, 0xB000 ; es:bx -> data area
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call boot_read_floppy
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; fill the necessary parameters to work with a floppy
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mov ax, word [es:bx+24]
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mov word [BPB_SecPerTrk], ax
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mov ax, word [es:bx+26]
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mov word [BPB_NumHeads], ax
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mov ax, word [es:bx+17]
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mov word [BPB_RootEntCnt], ax
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mov ax, word [es:bx+14]
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mov word [BPB_RsvdSecCnt], ax
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mov ax, word [es:bx+19]
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mov word [BPB_TotSec16], ax
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mov al, byte [es:bx+13]
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mov byte [BPB_SecPerClus], al
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mov al, byte [es:bx+16]
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mov byte [BPB_NumFATs], al
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;<Lrz> 18.11.2008
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mov ax, word [es:bx+22]
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mov word [BPB_FATSz16], ax
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mov cx, word [es:bx+11]
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mov word [BPB_BytsPerSec], cx
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; count of clusters in FAT12 ((size_of_FAT*2)/3)
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; mov ax, word [BPB_FATSz16]
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; mov cx, word [BPB_BytsPerSec]
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;end <Lrz> 18.11.2008
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xor dx, dx
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mul cx
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shl ax, 1
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mov cx, 3
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div cx ; now ax - number of clusters in FAT12
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mov word [end_of_FAT], ax
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; load first FAT table
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mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!!
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xor dx, dx ; starthead,drive
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mov al, byte [BPB_FATSz16] ; no of sectors to read
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add bx, word [BPB_BytsPerSec] ; es:bx -> data area
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call boot_read_floppy
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mov bx, 0xB000
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; and copy them to extended memory
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mov si, movedesc
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mov [si+8*2+3], bh ; from
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mov ax, word [BPB_BytsPerSec]
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shr ax, 1 ; words per sector
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mov cx, word [BPB_RsvdSecCnt]
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add cx, word [BPB_FATSz16]
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mul cx
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push ax ; save to stack count of words in boot+FAT
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xchg ax, cx
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push es
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push ds
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pop es
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mov ah, 0x87
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int 0x15
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pop es
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test ah, ah
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jz @f
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sayerr_floppy:
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mov dx, 0x3f2
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mov al, 0
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out dx, al
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; mov si, memmovefailed
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jmp $
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@@:
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pop ax ; restore from stack count of words in boot+FAT
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shl ax, 1 ; make bytes count from count of words
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and eax, 0ffffh
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add dword [si+8*3+2], eax
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; copy first FAT to second copy
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; TODO: BPB_NumFATs !!!!!
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add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!!
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mov byte [si+8*2+3], bh ; bx - begin of FAT
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mov ax, word [BPB_BytsPerSec]
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shr ax, 1 ; words per sector
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mov cx, word [BPB_FATSz16]
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mul cx
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mov cx, ax ; cx - count of words in FAT
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push es
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push ds
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pop es
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mov ah, 0x87
|
|
int 0x15
|
|
pop es
|
|
test ah, ah
|
|
jnz sayerr_floppy
|
|
|
|
mov ax, cx
|
|
shl ax, 1
|
|
and eax, 0ffffh ; ax - count of bytes in FAT
|
|
add dword [si+8*3+2], eax
|
|
|
|
; reading RootDir
|
|
; TODO: BPB_NumFATs
|
|
add bx, ax
|
|
add bx, 100h
|
|
and bx, 0ff00h ; bx - place in buffer to write RootDir
|
|
push bx
|
|
|
|
mov bx, word [BPB_BytsPerSec]
|
|
shr bx, 5 ; divide bx by 32
|
|
mov ax, word [BPB_RootEntCnt]
|
|
xor dx, dx
|
|
div bx
|
|
push ax ; ax - count of RootDir sectors
|
|
|
|
mov ax, word [BPB_FATSz16]
|
|
xor cx, cx
|
|
mov cl, byte [BPB_NumFATs]
|
|
mul cx
|
|
add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir
|
|
|
|
mov word [FirstDataSector], ax
|
|
pop bx
|
|
push bx
|
|
add word [FirstDataSector], bx ; Begin of data region of floppy
|
|
|
|
; read RootDir
|
|
call conv_abs_to_THS
|
|
pop ax
|
|
pop bx ; place in buffer to write
|
|
push ax
|
|
call boot_read_floppy ; read RootDir into buffer
|
|
; copy RootDir
|
|
mov byte [si+8*2+3], bh ; from buffer
|
|
pop ax ; ax = count of RootDir sectors
|
|
mov cx, word [BPB_BytsPerSec]
|
|
mul cx
|
|
shr ax, 1
|
|
mov cx, ax ; count of words to copy
|
|
push es
|
|
push ds
|
|
pop es
|
|
mov ah, 0x87
|
|
int 0x15
|
|
pop es
|
|
|
|
mov ax, cx
|
|
shl ax, 1
|
|
and eax, 0ffffh ; ax - count of bytes in RootDir
|
|
add dword [si+8*3+2], eax ; add count of bytes copied
|
|
|
|
; Reading data clusters from floppy
|
|
mov byte [si+8*2+3], bh
|
|
push bx
|
|
|
|
mov di, 2 ; First data cluster
|
|
.read_loop:
|
|
mov bx, di
|
|
shr bx, 1 ; bx+di = di*1.5
|
|
jnc .even
|
|
test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!!
|
|
jmp @f
|
|
.even:
|
|
test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!!
|
|
|
|
@@:
|
|
jz .skip
|
|
; read cluster di
|
|
;.read:
|
|
;conv cluster di to abs. sector ax
|
|
; ax = (N-2) * BPB_SecPerClus + FirstDataSector
|
|
mov ax, di
|
|
sub ax, 2
|
|
xor bx, bx
|
|
mov bl, byte [BPB_SecPerClus]
|
|
mul bx
|
|
add ax, word [FirstDataSector]
|
|
call conv_abs_to_THS
|
|
pop bx
|
|
push bx
|
|
mov al, byte [BPB_SecPerClus] ; number of sectors in cluster
|
|
call boot_read_floppy
|
|
push es
|
|
push ds
|
|
pop es
|
|
pusha
|
|
;
|
|
mov ax, word [BPB_BytsPerSec]
|
|
xor cx, cx
|
|
mov cl, byte [BPB_SecPerClus]
|
|
mul cx
|
|
shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2
|
|
mov cx, ax ; number of words to copy (count words in cluster)
|
|
;
|
|
mov ah, 0x87
|
|
int 0x15 ; copy data
|
|
test ah, ah
|
|
popa
|
|
pop es
|
|
jnz sayerr_floppy
|
|
; skip cluster di
|
|
.skip:
|
|
mov ax, word [BPB_BytsPerSec]
|
|
xor cx, cx
|
|
mov cl, byte [BPB_SecPerClus]
|
|
mul cx
|
|
and eax, 0ffffh ; ax - count of bytes in cluster
|
|
add dword [si+8*3+2], eax
|
|
|
|
mov ax, word [end_of_FAT] ; max cluster number
|
|
pusha
|
|
; draw percentage
|
|
; total clusters: ax
|
|
; read clusters: di
|
|
xchg ax, di
|
|
mov cx, 100
|
|
mul cx
|
|
div di
|
|
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, word [end_of_FAT] ; max number of cluster
|
|
jnz .read_loop
|
|
pop bx ; clear stack
|
|
|
|
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 bx, [es:0x9008] ; vga & 320x200
|
|
mov ax, 0x4f02 ; Vesa
|
|
setgr:
|
|
int 0x10
|
|
test ah, ah
|
|
jnz $
|
|
gmok2:
|
|
push ds
|
|
pop es
|