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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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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 ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
593 | mikedld | 8 | $Revision: 2465 $ |
9 | |||
10 | |||
1 | ha | 11 | ; READ RAMDISK IMAGE FROM HD |
12 | |||
2434 | Serge | 13 | cmp [boot_dev+OS_BASE+0x10000], 1 |
14 | jne no_sys_on_hd |
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1 | ha | 15 | |
2434 | Serge | 16 | test [DRIVE_DATA+1], byte 0x40 |
17 | jz position_2 |
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18 | mov [hdbase], 0x1f0 |
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19 | mov [hdid], 0x0 |
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20 | mov [hdpos], 1 |
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21 | mov [fat32part], 0 |
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1 | ha | 22 | position_1_1: |
2434 | Serge | 23 | inc [fat32part] |
24 | call search_and_read_image |
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25 | cmp [image_retrieved], 1 |
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26 | je yes_sys_on_hd |
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27 | movzx eax, byte [DRIVE_DATA+2] |
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28 | cmp [fat32part], eax |
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1 | ha | 29 | jle position_1_1 |
30 | position_2: |
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2434 | Serge | 31 | test [DRIVE_DATA+1], byte 0x10 |
32 | jz position_3 |
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33 | mov [hdbase], 0x1f0 |
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34 | mov [hdid], 0x10 |
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35 | mov [hdpos], 2 |
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36 | mov [fat32part], 0 |
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1 | ha | 37 | position_2_1: |
2434 | Serge | 38 | inc [fat32part] |
39 | call search_and_read_image |
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40 | cmp [image_retrieved], 1 |
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41 | je yes_sys_on_hd |
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42 | movzx eax, byte [DRIVE_DATA+3] |
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43 | cmp eax, [fat32part] |
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1 | ha | 44 | jle position_2_1 |
45 | position_3: |
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2434 | Serge | 46 | test [DRIVE_DATA+1], byte 0x4 |
47 | jz position_4 |
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48 | mov [hdbase], 0x170 |
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49 | mov [hdid], 0x0 |
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50 | mov [hdpos], 3 |
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51 | mov [fat32part], 0 |
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1 | ha | 52 | position_3_1: |
2434 | Serge | 53 | inc [fat32part] |
54 | call search_and_read_image |
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55 | cmp [image_retrieved], 1 |
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56 | je yes_sys_on_hd |
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57 | movzx eax, byte [DRIVE_DATA+4] |
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58 | cmp eax, [fat32part] |
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1 | ha | 59 | jle position_3_1 |
60 | position_4: |
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2434 | Serge | 61 | test [DRIVE_DATA+1], byte 0x1 |
62 | jz no_sys_on_hd |
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63 | mov [hdbase], 0x170 |
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64 | mov [hdid], 0x10 |
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65 | mov [hdpos], 4 |
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66 | mov [fat32part], 0 |
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1 | ha | 67 | position_4_1: |
2434 | Serge | 68 | inc [fat32part] |
69 | call search_and_read_image |
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70 | cmp [image_retrieved], 1 |
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71 | je yes_sys_on_hd |
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72 | movzx eax, byte [DRIVE_DATA+5] |
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73 | cmp eax, [fat32part] |
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1 | ha | 74 | jle position_4_1 |
2434 | Serge | 75 | jmp yes_sys_on_hd |
1 | ha | 76 | |
77 | search_and_read_image: |
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2434 | Serge | 78 | call set_FAT32_variables |
79 | mov edx, bootpath |
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80 | call read_image |
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81 | test eax, eax |
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82 | jz image_present |
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83 | mov edx, bootpath2 |
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84 | call read_image |
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85 | test eax, eax |
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86 | jz image_present |
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1 | ha | 87 | ret |
88 | image_present: |
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2434 | Serge | 89 | mov [image_retrieved], 1 |
1 | ha | 90 | ret |
91 | |||
92 | read_image: |
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2434 | Serge | 93 | mov eax, hdsysimage+OS_BASE+0x10000 |
94 | mov ebx, 1474560/512 |
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95 | mov ecx, RAMDISK |
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96 | mov esi, 0 |
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97 | mov edi, 12 |
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98 | call file_read |
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381 | serge | 99 | ret |
1 | ha | 100 | |
381 | serge | 101 | image_retrieved db 0 |
1 | ha | 102 | counter_of_partitions db 0 |
103 | no_sys_on_hd: |
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545 | spraid | 104 | ; test_to_format_ram_disk (need if not using ram disk) |
2434 | Serge | 105 | cmp [boot_dev+OS_BASE+0x10000], 3 |
106 | jne not_format_ram_disk |
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545 | spraid | 107 | ; format_ram_disk |
2434 | Serge | 108 | mov edi, RAMDISK |
109 | mov ecx, 0x1080 |
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110 | xor eax, eax |
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111 | @@: |
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112 | stosd |
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113 | loop @b |
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545 | spraid | 114 | |
2434 | Serge | 115 | mov ecx, 0x58F7F |
116 | mov eax, 0xF6F6F6F6 |
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117 | @@: |
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118 | stosd |
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119 | loop @b |
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545 | spraid | 120 | |
2434 | Serge | 121 | mov [RAMDISK+0x200], dword 0xFFFFF0 ; fat table |
122 | mov [RAMDISK+0x4200], dword 0xFFFFF0 |
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545 | spraid | 123 | |
124 | not_format_ram_disk: |
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1 | ha | 125 | yes_sys_on_hd: |