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431 serge 1
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
2465 Serge 3
;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
431 serge 4
;; 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: 2465 $
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1 ha 11
; READ RAMDISK IMAGE FROM HD
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2434 Serge 13
        cmp     [boot_dev+OS_BASE+0x10000], 1
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        jne     no_sys_on_hd
1 ha 15
 
2434 Serge 16
        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
1 ha 22
  position_1_1:
2434 Serge 23
        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
1 ha 29
        jle     position_1_1
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  position_2:
2434 Serge 31
        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
1 ha 37
  position_2_1:
2434 Serge 38
        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]
1 ha 44
        jle     position_2_1
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  position_3:
2434 Serge 46
        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
1 ha 52
  position_3_1:
2434 Serge 53
        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]
1 ha 59
        jle     position_3_1
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  position_4:
2434 Serge 61
        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
1 ha 67
  position_4_1:
2434 Serge 68
        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]
1 ha 74
        jle     position_4_1
2434 Serge 75
        jmp     yes_sys_on_hd
1 ha 76
 
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  search_and_read_image:
2434 Serge 78
        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
1 ha 87
        ret
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    image_present:
2434 Serge 89
        mov     [image_retrieved], 1
1 ha 90
        ret
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read_image:
2434 Serge 93
        mov     eax, hdsysimage+OS_BASE+0x10000
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        mov     ebx, 1474560/512
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        mov     ecx, RAMDISK
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        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)
2434 Serge 105
        cmp     [boot_dev+OS_BASE+0x10000], 3
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        jne     not_format_ram_disk
545 spraid 107
        ; format_ram_disk
2434 Serge 108
        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
545 spraid 114
 
2434 Serge 115
        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
545 spraid 120
 
2434 Serge 121
        mov     [RAMDISK+0x200], dword 0xFFFFF0         ; fat table
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        mov     [RAMDISK+0x4200], dword 0xFFFFF0
545 spraid 123
 
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not_format_ram_disk:
1 ha 125
yes_sys_on_hd: