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431 serge 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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593 mikedld 8 
$Revision: 593 $
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1 ha 11 
; READ RAMDISK IMAGE FROM HD
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465 serge 13 
        cmp   [boot_dev+OS_BASE+0x10000],1
1 ha 14 
        jne   no_sys_on_hd
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412 serge 16 
        test  [DRIVE_DATA+1],byte 0x40
1 ha 17 
        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
412 serge 27 
        movzx eax,byte [DRIVE_DATA+2]
1 ha 28 
        cmp   [fat32part],eax
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        jle     position_1_1
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  position_2:
412 serge 31 
        test  [DRIVE_DATA+1],byte 0x10
1 ha 32 
        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
412 serge 42 
        movzx eax,byte [DRIVE_DATA+3]
1 ha 43 
        cmp   eax,[fat32part]
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        jle     position_2_1
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  position_3:
412 serge 46 
        test  [DRIVE_DATA+1],byte 0x4
1 ha 47 
        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
412 serge 57 
        movzx eax,byte [DRIVE_DATA+4]
1 ha 58 
        cmp   eax,[fat32part]
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        jle     position_3_1
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  position_4:
412 serge 61 
        test  [DRIVE_DATA+1],byte 0x1
1 ha 62 
        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
412 serge 72 
        movzx eax,byte [DRIVE_DATA+5]
1 ha 73 
        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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read_image:
465 serge 93 
        mov   eax, hdsysimage+OS_BASE+0x10000
1 ha 94 
        mov   ebx, 1474560/512
381 serge 95 
        mov   ecx, RAMDISK
1 ha 96 
        mov   esi, 0
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        mov   edi, 12
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        call  file_read
381 serge 99 
        ret
1 ha 100 
 
381 serge 101 
image_retrieved  db 0
1 ha 102 
counter_of_partitions db 0
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no_sys_on_hd:
545 spraid 104 
        ; 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:
1 ha 125 
yes_sys_on_hd: