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2288 clevermous 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
2455 mario79 3 
;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
2288 clevermous 4 
;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 2643 $
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; READ RAMDISK IMAGE FROM HD
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        cmp     [boot_dev+OS_BASE+0x10000], 1
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        jne     no_sys_on_hd
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        test    [DRIVE_DATA+1], byte 0x40
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        jz      position_2
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        mov     [hdbase], 0x1f0
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        mov     [hdid], 0x0
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        mov     [hdpos], 1
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        mov     [fat32part], 0
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  position_1_1:
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        inc     [fat32part]
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        call    search_and_read_image
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        cmp     [image_retrieved], 1
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        je      yes_sys_on_hd
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        movzx   eax, byte [DRIVE_DATA+2]
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        cmp     [fat32part], eax
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        jle     position_1_1
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  position_2:
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        test    [DRIVE_DATA+1], byte 0x10
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        jz      position_3
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        mov     [hdbase], 0x1f0
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        mov     [hdid], 0x10
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        mov     [hdpos], 2
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        mov     [fat32part], 0
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  position_2_1:
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        inc     [fat32part]
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        call    search_and_read_image
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        cmp     [image_retrieved], 1
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        je      yes_sys_on_hd
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        movzx   eax, byte [DRIVE_DATA+3]
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        cmp     eax, [fat32part]
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        jle     position_2_1
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  position_3:
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        test    [DRIVE_DATA+1], byte 0x4
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        jz      position_4
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        mov     [hdbase], 0x170
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        mov     [hdid], 0x0
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        mov     [hdpos], 3
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        mov     [fat32part], 0
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  position_3_1:
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        inc     [fat32part]
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        call    search_and_read_image
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        cmp     [image_retrieved], 1
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        je      yes_sys_on_hd
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        movzx   eax, byte [DRIVE_DATA+4]
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        cmp     eax, [fat32part]
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        jle     position_3_1
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  position_4:
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        test    [DRIVE_DATA+1], byte 0x1
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        jz      no_sys_on_hd
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        mov     [hdbase], 0x170
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        mov     [hdid], 0x10
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        mov     [hdpos], 4
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        mov     [fat32part], 0
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  position_4_1:
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        inc     [fat32part]
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        call    search_and_read_image
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        cmp     [image_retrieved], 1
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        je      yes_sys_on_hd
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        movzx   eax, byte [DRIVE_DATA+5]
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        cmp     eax, [fat32part]
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        jle     position_4_1
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        jmp     yes_sys_on_hd
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  search_and_read_image:
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        call    set_FAT32_variables
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        mov     edx, bootpath
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        call    read_image
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        test    eax, eax
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        jz      image_present
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        mov     edx, bootpath2
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        call    read_image
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        test    eax, eax
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        jz      image_present
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        ret
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    image_present:
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        mov     [image_retrieved], 1
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        ret
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2643 clevermous 92 
iglobal
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align 4
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read_image_fsinfo:
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        dd      0               ; function: read
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        dq      0               ; offset: zero
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        dd      1474560/512     ; size
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        dd      RAMDISK         ; buffer
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        db      0
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        dd      hdsysimage+OS_BASE+0x10000
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endg
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2288 clevermous 103 
read_image:
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        mov     ebx, read_image_fsinfo
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        pushad
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        call    file_system_lfn
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        popad
2288 clevermous 108 
        ret
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image_retrieved  db 0
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counter_of_partitions db 0
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no_sys_on_hd:
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        ; test_to_format_ram_disk (need if not using ram disk)
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        cmp     [boot_dev+OS_BASE+0x10000], 3
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        jne     not_format_ram_disk
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        ; format_ram_disk
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        mov     edi, RAMDISK
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        mov     ecx, 0x1080
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        xor     eax, eax
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@@:
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        stosd
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        loop    @b
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        mov     ecx, 0x58F7F
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        mov     eax, 0xF6F6F6F6
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@@:
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        stosd
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        loop    @b
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        mov     [RAMDISK+0x200], dword 0xFFFFF0         ; fat table
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        mov     [RAMDISK+0x4200], dword 0xFFFFF0
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not_format_ram_disk:
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yes_sys_on_hd: