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Rev 1379 Rev 1410
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;;                                                              ;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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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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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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 7 
 
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$Revision: 1379 $
 8 
$Revision: 1410 $
9 
 
 9 
 
10 
 
 10 
 
11 
;*************************************************************
 11 
;*************************************************************
- 
 
 12 
;* 13.02.2010 Find all partition and check supported FS
12 
;* 12.07.2007 Check all 4 entry of MBR and EMBR
 13 
;* 12.07.2007 Check all 4 entry of MBR and EMBR
13 
;* 29.04.2006 Elimination of hangup after the
 14 
;* 29.04.2006 Elimination of hangup after the
14 
;*             expiration hd_wait_timeout -  Mario79
 15 
;*             expiration hd_wait_timeout -  Mario79
15 
;* 28.01.2006 find all Fat16/32 partition in all input point
 16 
;* 28.01.2006 find all Fat16/32 partition in all input point
16 
;*            to MBR - Mario79
 17 
;*            to MBR - Mario79
17 
;*************************************************************
 18 
;*************************************************************
18 
 
 19 
 
19 
uglobal
 20 
uglobal
20 
align 4
 21 
align 4
21 
 
 22 
 
22 
;******************************************************
 23 
;******************************************************
23 
; Please do not change this place - variables  in text
 24 
; Please do not change this place - variables  in text
24 
; Mario79
 25 
; Mario79
25 
; START place
 26 
; START place
26 
;******************************************************
 27 
;******************************************************
27 
PARTITION_START      dd 0x3f
 28 
PARTITION_START      dd 0x3f
28 
PARTITION_END        dd 0
 29 
PARTITION_END        dd 0
29 
fs_type              db 0       ; 0=none, 1=NTFS, 2=EXT2/3, 16=FAT16, 32=FAT32
 30 
fs_type              db 0       ; 1=NTFS, 2=EXT2/3, 16=FAT16, 32=FAT32
30 
align 4
 31 
align 4
31 
 
 32 
 
32 
fs_dependent_data_start:
 33 
fs_dependent_data_start:
33 
; FATxx data
 34 
; FATxx data
34 
 
 35 
 
35 
SECTORS_PER_FAT      dd 0x1f3a
 36 
SECTORS_PER_FAT      dd 0x1f3a
36 
NUMBER_OF_FATS       dd 0x2
 37 
NUMBER_OF_FATS       dd 0x2
37 
SECTORS_PER_CLUSTER  dd 0x8
 38 
SECTORS_PER_CLUSTER  dd 0x8
38 
BYTES_PER_SECTOR     dd 0x200   ; Note: if BPS <> 512 need lots of changes
 39 
BYTES_PER_SECTOR     dd 0x200   ; Note: if BPS <> 512 need lots of changes
39 
ROOT_CLUSTER         dd 2       ; first rootdir cluster
 40 
ROOT_CLUSTER         dd 2       ; first rootdir cluster
40 
FAT_START            dd 0       ; start of fat table
 41 
FAT_START            dd 0       ; start of fat table
41 
ROOT_START           dd 0       ; start of rootdir (only fat16)
 42 
ROOT_START           dd 0       ; start of rootdir (only fat16)
42 
ROOT_SECTORS         dd 0       ; count of rootdir sectors (only fat16)
 43 
ROOT_SECTORS         dd 0       ; count of rootdir sectors (only fat16)
43 
DATA_START           dd 0       ; start of data area (=first cluster 2)
 44 
DATA_START           dd 0       ; start of data area (=first cluster 2)
44 
LAST_CLUSTER         dd 0       ; last availabe cluster
 45 
LAST_CLUSTER         dd 0       ; last availabe cluster
45 
ADR_FSINFO           dd 0       ; used only by fat32
 46 
ADR_FSINFO           dd 0       ; used only by fat32
46 
 
 47 
 
47 
fatRESERVED          dd 0x0FFFFFF6
 48 
fatRESERVED          dd 0x0FFFFFF6
48 
fatBAD               dd 0x0FFFFFF7
 49 
fatBAD               dd 0x0FFFFFF7
49 
fatEND               dd 0x0FFFFFF8
 50 
fatEND               dd 0x0FFFFFF8
50 
fatMASK              dd 0x0FFFFFFF
 51 
fatMASK              dd 0x0FFFFFFF
51 
 
 52 
 
52 
fatStartScan         dd 2
 53 
fatStartScan         dd 2
53 
 
 54 
 
54 
fs_dependent_data_end:
 55 
fs_dependent_data_end:
55 
file_system_data_size = $ - PARTITION_START
 56 
file_system_data_size = $ - PARTITION_START
56 
if file_system_data_size > 96
 57 
if file_system_data_size > 96
57 
ERROR: sizeof(file system data) too big!
 58 
ERROR: sizeof(file system data) too big!
58 
end if
 59 
end if
59 
 
 60 
 
60 
virtual at fs_dependent_data_start
 61 
virtual at fs_dependent_data_start
61 
; NTFS data
 62 
; NTFS data
62 
ntfs_data:
 63 
ntfs_data:
63 
.sectors_per_cluster    dd      ?
 64 
.sectors_per_cluster    dd      ?
64 
.mft_cluster            dd      ?
 65 
.mft_cluster            dd      ?
65 
.mftmirr_cluster        dd      ?
 66 
.mftmirr_cluster        dd      ?
66 
.frs_size               dd      ?       ; FRS size in bytes
 67 
.frs_size               dd      ?       ; FRS size in bytes
67 
.iab_size               dd      ?       ; IndexAllocationBuffer size in bytes
 68 
.iab_size               dd      ?       ; IndexAllocationBuffer size in bytes
68 
.frs_buffer             dd      ?
 69 
.frs_buffer             dd      ?
69 
.iab_buffer             dd      ?
 70 
.iab_buffer             dd      ?
70 
.mft_retrieval          dd      ?
 71 
.mft_retrieval          dd      ?
71 
.mft_retrieval_size     dd      ?
 72 
.mft_retrieval_size     dd      ?
72 
.mft_retrieval_alloc    dd      ?
 73 
.mft_retrieval_alloc    dd      ?
73 
.mft_retrieval_end      dd      ?
 74 
.mft_retrieval_end      dd      ?
74 
.cur_index_size         dd      ?
 75 
.cur_index_size         dd      ?
75 
.cur_index_buf          dd      ?
 76 
.cur_index_buf          dd      ?
76 
if $ > fs_dependent_data_end
 77 
if $ > fs_dependent_data_end
77 
ERROR: increase sizeof(fs_dependent_data)!
 78 
ERROR: increase sizeof(fs_dependent_data)!
78 
end if
 79 
end if
79 
end virtual
 80 
end virtual
80 
 
 81 
 
81 
virtual at fs_dependent_data_start
 82 
virtual at fs_dependent_data_start
82 
; EXT2 data
 83 
; EXT2 data
83 
ext2_data:
 84 
ext2_data:
84 
    .log_block_size                 dd ?
 85 
    .log_block_size                 dd ?
85 
    .block_size                     dd ?
 86 
    .block_size                     dd ?
86 
    .count_block_in_block           dd ?
 87 
    .count_block_in_block           dd ?
87 
    .blocks_per_group               dd ?
 88 
    .blocks_per_group               dd ?
88 
    .inodes_per_group               dd ?
 89 
    .inodes_per_group               dd ?
89 
    .global_desc_table              dd ?
 90 
    .global_desc_table              dd ?
90 
    .root_inode                     dd ?	; pointer to root inode in memory
 91 
    .root_inode                     dd ?	; pointer to root inode in memory
91 
    .inode_size                     dd ?
 92 
    .inode_size                     dd ?
92 
    .count_pointer_in_block         dd ?	;  block_size / 4
 93 
    .count_pointer_in_block         dd ?	;  block_size / 4
93 
    .count_pointer_in_block_square  dd ?	; (block_size / 4)**2
 94 
    .count_pointer_in_block_square  dd ?	; (block_size / 4)**2
94 
    .ext2_save_block                dd ?    ; ¡«®ª ­  £«®¡ «ì­ãî 1 ¯à®æ¥¤ãàã
 95 
    .ext2_save_block                dd ?    ; ¡«®ª ­  £«®¡ «ì­ãî 1 ¯à®æ¥¤ãàã
95 
    .ext2_temp_block                dd ?    ; ¡«®ª ¤«ï ¬¥«ª¨å ¯à®æ¥¤ãà
 96 
    .ext2_temp_block                dd ?    ; ¡«®ª ¤«ï ¬¥«ª¨å ¯à®æ¥¤ãà
96 
    .ext2_save_inode                dd ?    ; inode ­  £«®¡ «ì­ãî ¯à®æ¥¤ãàã
 97 
    .ext2_save_inode                dd ?    ; inode ­  £«®¡ «ì­ãî ¯à®æ¥¤ãàã
97 
    .ext2_temp_inode                dd ?    ; inode ¤«ï ¬¥«ª¨å ¯à®æ¥¤ãà
 98 
    .ext2_temp_inode                dd ?    ; inode ¤«ï ¬¥«ª¨å ¯à®æ¥¤ãà
98 
if $ > fs_dependent_data_end
 99 
if $ > fs_dependent_data_end
99 
ERROR: increase sizeof(fs_dependent_data)!
 100 
ERROR: increase sizeof(fs_dependent_data)!
100 
end if
 101 
end if
101 
end virtual
 102 
end virtual
102 
 
 103 
 
103 
;***************************************************************************
 104 
;***************************************************************************
104 
; End place
 105 
; End place
105 
; Mario79
 106 
; Mario79
106 
;***************************************************************************
 107 
;***************************************************************************
107 
endg
 108 
endg
108 
iglobal
 109 
iglobal
109 
 
 110 
 
110 
  partition_types:              ; list of fat16/32 partitions
 111 
  partition_types:              ; list of fat16/32 partitions
111 
    db    0x04                  ; DOS: fat16 <32M
 112 
    db    0x04                  ; DOS: fat16 <32M
112 
    db    0x06                  ; DOS: fat16 >32M
 113 
    db    0x06                  ; DOS: fat16 >32M
113 
    db    0x0b                  ; WIN95: fat32
 114 
    db    0x0b                  ; WIN95: fat32
114 
    db    0x0c                  ; WIN95: fat32, LBA-mapped
 115 
    db    0x0c                  ; WIN95: fat32, LBA-mapped
115 
    db    0x0e                  ; WIN95: fat16, LBA-mapped
 116 
    db    0x0e                  ; WIN95: fat16, LBA-mapped
116 
    db    0x14                  ; Hidden DOS: fat16 <32M
 117 
    db    0x14                  ; Hidden DOS: fat16 <32M
117 
    db    0x16                  ; Hidden DOS: fat16 >32M
 118 
    db    0x16                  ; Hidden DOS: fat16 >32M
118 
    db    0x1b                  ; Hidden WIN95: fat32
 119 
    db    0x1b                  ; Hidden WIN95: fat32
119 
    db    0x1c                  ; Hidden WIN95: fat32, LBA-mapped
 120 
    db    0x1c                  ; Hidden WIN95: fat32, LBA-mapped
120 
    db    0x1e                  ; Hidden WIN95: fat16, LBA-mapped
 121 
    db    0x1e                  ; Hidden WIN95: fat16, LBA-mapped
121 
    db    0xc4                  ; DRDOS/secured: fat16 <32M
 122 
    db    0xc4                  ; DRDOS/secured: fat16 <32M
122 
    db    0xc6                  ; DRDOS/secured: fat16 >32M
 123 
    db    0xc6                  ; DRDOS/secured: fat16 >32M
123 
    db    0xcb                  ; DRDOS/secured: fat32
 124 
    db    0xcb                  ; DRDOS/secured: fat32
124 
    db    0xcc                  ; DRDOS/secured: fat32, LBA-mapped
 125 
    db    0xcc                  ; DRDOS/secured: fat32, LBA-mapped
125 
    db    0xce                  ; DRDOS/secured: fat16, LBA-mapped
 126 
    db    0xce                  ; DRDOS/secured: fat16, LBA-mapped
126 
    db    0xd4                  ; Old Multiuser DOS secured: fat16 <32M
 127 
    db    0xd4                  ; Old Multiuser DOS secured: fat16 <32M
127 
    db    0xd6                  ; Old Multiuser DOS secured: fat16 >32M
 128 
    db    0xd6                  ; Old Multiuser DOS secured: fat16 >32M
128 
    db    0x07                  ; NTFS
 129 
    db    0x07                  ; NTFS
129 
    db    0x27                  ; NTFS, hidden
 130 
    db    0x27                  ; NTFS, hidden
130 
    db    0x83                  ; Linux native file system (ext2fs)
 131 
    db    0x83                  ; Linux native file system (ext2fs)
131 
  partition_types_end:
 132 
  partition_types_end:
132 
 
 133 
 
133 
 
 134 
 
134 
  extended_types:               ; list of extended partitions
 135 
  extended_types:               ; list of extended partitions
135 
    db    0x05                  ; DOS: extended partition
 136 
    db    0x05                  ; DOS: extended partition
136 
    db    0x0f                  ; WIN95: extended partition, LBA-mapped
 137 
    db    0x0f                  ; WIN95: extended partition, LBA-mapped
137 
    db    0xc5                  ; DRDOS/secured: extended partition
 138 
    db    0xc5                  ; DRDOS/secured: extended partition
138 
    db    0xd5                  ; Old Multiuser DOS secured: extended partition
 139 
    db    0xd5                  ; Old Multiuser DOS secured: extended partition
139 
  extended_types_end:
 140 
  extended_types_end:
140 
 
 141 
 
141 
endg
 142 
endg
142 
 
 143 
 
143 
; Partition chain used:
 144 
; Partition chain used:
144 
; MBR <---------------------
 145 
; MBR <---------------------
145 
; |                         |
 146 
; |                         |
146 
; |-> PARTITION1          |
 147 
; |-> PARTITION1          |
147 
; |-> EXTENDED PARTITION -        ;not need be second partition
 148 
; |-> EXTENDED PARTITION -        ;not need be second partition
148 
; |-> PARTITION3
 149 
; |-> PARTITION3
149 
; |-> PARTITION4
 150 
; |-> PARTITION4
150 
 
 151 
 
151 
set_PARTITION_variables:
 152 
set_PARTITION_variables:
152 
set_FAT32_variables:        ;deprecated
 153 
set_FAT32_variables:        ;deprecated
153 
    mov   [problem_partition],0
 154 
    and   [problem_partition], 0
154 
    call  reserve_hd1
 155 
    call  reserve_hd1
155 
    call  reserve_hd_channel
 156 
    call  reserve_hd_channel
156 
 
 157 
 
157 
    pushad
 158 
    pushad
158 
 
 159 
 
159 
    cmp   dword [hdpos],0
 160 
    cmp   dword [hdpos],0
160 
    je    problem_hd
 161 
    je    problem_hd
161 
 
 162 
 
162 
    xor   ecx,ecx               ; partition count
 163 
    xor   ecx,ecx               ; partition count
163 
    or    edx,-1                ; flag for partition
 164 
    ;or    edx,-1                ; flag for partition
164 
    xor   eax,eax               ; address MBR
 165 
    xor   eax,eax               ; address MBR
165 
    xor   ebp,ebp               ; extended partition start
 166 
    xor   ebp,ebp               ; extended partition start
166 
 
 167 
 
167 
new_mbr:
 168 
new_mbr:
168 
    test  ebp,ebp               ; is there extended partition? (MBR or EMBR)
 169 
    test  ebp,ebp               ; is there extended partition? (MBR or EMBR)
169 
    jnz   extended_already_set  ; yes
 170 
    jnz   extended_already_set  ; yes
170 
    xchg  ebp,eax               ; no. set it now
 171 
    xchg  ebp,eax               ; no. set it now
171 
 
 172 
 
172 
extended_already_set:
 173 
extended_already_set:
173 
    add   eax,ebp               ; mbr=mbr+0, ext_part=ext_start+relat_start
 174 
    add   eax,ebp               ; mbr=mbr+0, ext_part=ext_start+relat_start
174 
    mov   ebx,buffer
 175 
    mov   ebx,buffer
175 
    call  hd_read
 176 
    call  hd_read
176 
    cmp  [hd_error],0
 177 
    cmp  [hd_error],0
177 
    jne  problem_hd
 178 
    jne  problem_hd
178 
 
 179 
 
179 
    cmp   word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
 180 
    cmp   word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
180 
    jnz   end_partition_chain
 181 
    jnz   end_partition_chain
- 
 
 182 
    push  eax                      ; push only one time
181 
    cmp   dword [ebx+0x1be+0xc],0 ; skip over empty partition
 183 
    cmp   dword [ebx+0x1be+0xc],0 ; skip over empty partition
182 
    jnz    test_primary_partition_0
 184 
    jnz    test_primary_partition_0
183 
    cmp   dword [ebx+0x1be+0xc+16],0
 185 
    cmp   dword [ebx+0x1be+0xc+16],0
184 
    jnz    test_primary_partition_1
 186 
    jnz    test_primary_partition_1
185 
    cmp   dword [ebx+0x1be+0xc+16+16],0
 187 
    cmp   dword [ebx+0x1be+0xc+16+16],0
186 
    jnz    test_primary_partition_2
 188 
    jnz    test_primary_partition_2
187 
    cmp   dword [ebx+0x1be+0xc+16+16+16],0
 189 
    cmp   dword [ebx+0x1be+0xc+16+16+16],0
188 
    jnz    test_primary_partition_3
 190 
    jnz    test_primary_partition_3
- 
 
 191 
    pop   eax
189 
    jmp   end_partition_chain
 192 
    jmp   end_partition_chain
190 
 
 193 
 
191 
test_primary_partition_0:
 194 
test_primary_partition_0:
192 
    push  eax
 - 
 
193 
    mov   al,[ebx+0x1be+4]      ; get primary partition type
 195 
    mov   al,[ebx+0x1be+4]      ; get primary partition type
194 
    call  scan_partition_types
 196 
    call  scan_partition_types
195 
    pop   eax
 - 
 
196 
    jnz   test_primary_partition_1      ; no. skip over
 197 
    jnz   test_primary_partition_1      ; no. skip over
197 
 
 198 
 
198 
    inc   ecx
 199 
    inc   ecx
199 
    cmp   ecx,[known_part]       ; is it wanted partition?
 200 
    cmp   ecx,[known_part]       ; is it wanted partition?
200 
    jnz   test_primary_partition_1      ; no
 201 
    jnz   test_primary_partition_1      ; no
- 
 
 202 
 
201 
 
 203 
        pop     eax
202 
        mov     edx, eax                ; start sector
 204 
        ;mov     edx, eax                ; start sector
- 
 
 205 
        add     eax, [ebx+0x1be+8]      ; add relative start
203 
        add     edx, [ebx+0x1be+8]      ; add relative start
 206 
        ;mov     [PARTITON_START],edx
204 
        push    edx
 207 
        ;push    edx
- 
 
 208 
        mov     edx, [ebx+0x1be+12]     ; length
205 
        add     edx, [ebx+0x1be+12]     ; add length
 209 
        ;add     edx, eax                ; add length
206 
        dec     edx                     ; PARTITION_END is inclusive
 210 
        ;dec     edx                     ; PARTITION_END is inclusive
207 
        mov     [PARTITION_END], edx    ; note that this can be changed
 211 
        ;mov     [PARTITION_END], edx    ; note that this can be changed
208 
                                        ; when file system data will be available
 212 
                                        ; when file system data will be available
209 
        mov     dl, [ebx+0x1be+4]
 213 
        mov     cl, [ebx+0x1be+4]       ; fs_type
210 
        mov     [fs_type], dl           ; save for FS recognizer (separate FAT vs NTFS)
 214 
        ;mov     [fs_type], dl           ; save for FS recognizer (separate FAT vs NTFS)
- 
 
 215 
        ;pop     edx
211 
        pop     edx
 216 
        jmp     hd_and_partition_ok
212 
 
 - 
 
213 
test_primary_partition_1:
 217 
 
214 
    push  eax
 218 
test_primary_partition_1:
215 
    mov   al,[ebx+0x1be+4+16]      ; get primary partition type
 - 
 
216 
    call  scan_partition_types
 219 
    mov   al,[ebx+0x1be+4+16]      ; get primary partition type
217 
    pop   eax
 220 
    call  scan_partition_types
218 
    jnz   test_primary_partition_2        ; no. skip over
 221 
    jnz   test_primary_partition_2        ; no. skip over
219 
 
 222 
 
220 
    inc   ecx
 223 
    inc   ecx
221 
    cmp   ecx,[known_part]       ; is it wanted partition?
 224 
    cmp   ecx,[known_part]       ; is it wanted partition?
222 
    jnz   test_primary_partition_2        ; no
 225 
    jnz   test_primary_partition_2        ; no
- 
 
 226 
 
- 
 
 227 
        pop     eax
- 
 
 228 
        add     eax, [ebx+0x1be+8+16]
- 
 
 229 
        mov     edx, [ebx+0x1be+12+16]
- 
 
 230 
        mov     cl, [ebx+0x1be+4+16]
- 
 
 231 
        jmp     hd_and_partition_ok
223 
 
 232 
 
224 
        mov     edx, eax
 233 
        ;mov     edx, eax
225 
        add     edx, [ebx+0x1be+8+16]
 234 
        ;add     edx, [ebx+0x1be+8+16]
226 
        push    edx
 235 
        ;push    edx
227 
        add     edx, [ebx+0x1be+12+16]
 236 
        ;add     edx, [ebx+0x1be+12+16]
228 
        dec     edx
 237 
        ;dec     edx
229 
        mov     [PARTITION_END], edx
 238 
        ;mov     [PARTITION_END], edx
230 
        mov     dl, [ebx+0x1be+4+16]
 239 
        ;mov     al, [ebx+0x1be+4+16]
231 
        mov     [fs_type], dl
 240 
        ;mov     [fs_type], dl
232 
        pop     edx
 241 
        ;pop     edx
233 
 
 - 
 
234 
test_primary_partition_2:
 242 
 
235 
    push  eax
 243 
test_primary_partition_2:
236 
    mov   al,[ebx+0x1be+4+16+16]      ; get primary partition type
 - 
 
237 
    call  scan_partition_types
 244 
    mov   al,[ebx+0x1be+4+16+16]      ; get primary partition type
238 
    pop   eax
 245 
    call  scan_partition_types
239 
    jnz   test_primary_partition_3        ; no. skip over
 246 
    jnz   test_primary_partition_3        ; no. skip over
240 
 
 247 
 
241 
    inc   ecx
 248 
    inc   ecx
242 
    cmp   ecx,[known_part]       ; is it wanted partition?
 249 
    cmp   ecx,[known_part]       ; is it wanted partition?
243 
    jnz   test_primary_partition_3        ; no
 250 
    jnz   test_primary_partition_3        ; no
- 
 
 251 
 
- 
 
 252 
        pop     eax
- 
 
 253 
        add     eax, [ebx+0x1be+8+16+16]
- 
 
 254 
        mov     edx, [ebx+0x1be+12+16+16]
- 
 
 255 
        mov     cl, [ebx+0x1be+4+16+16]
244 
 
 256 
        jmp     hd_and_partition_ok
245 
        mov     edx, eax
 257 
        ;mov     edx, eax
246 
        add     edx, [ebx+0x1be+8+16+16]
 258 
        ;add     edx, [ebx+0x1be+8+16+16]
247 
        push    edx
 259 
        ;push    edx
248 
        add     edx, [ebx+0x1be+12+16+16]
 260 
        ;add     edx, [ebx+0x1be+12+16+16]
249 
        dec     edx
 261 
        ;dec     edx
250 
        mov     [PARTITION_END], edx
 262 
        ;mov     [PARTITION_END], edx
251 
        mov     dl, [ebx+0x1be+4+16+16]
 263 
        ;mov     al, [ebx+0x1be+4+16+16]
252 
        mov     [fs_type], dl
 264 
        ;mov     [fs_type], dl
253 
        pop     edx
 265 
        ;pop     edx
254 
 
 - 
 
255 
test_primary_partition_3:
 266 
 
256 
    push  eax
 267 
test_primary_partition_3:
257 
    mov   al,[ebx+0x1be+4+16+16+16]      ; get primary partition type
 - 
 
258 
    call  scan_partition_types
 268 
    mov   al,[ebx+0x1be+4+16+16+16]      ; get primary partition type
259 
    pop   eax
 269 
    call  scan_partition_types
260 
    jnz   test_ext_partition_0        ; no. skip over
 270 
    jnz   test_ext_partition_0        ; no. skip over
261 
 
 271 
 
262 
    inc   ecx
 272 
    inc   ecx
263 
    cmp   ecx,[known_part]       ; is it wanted partition?
 273 
    cmp   ecx,[known_part]       ; is it wanted partition?
264 
    jnz   test_ext_partition_0  ; no
 274 
    jnz   test_ext_partition_0  ; no
- 
 
 275 
 
- 
 
 276 
        pop     eax
- 
 
 277 
        add     eax, [ebx+0x1be+8+16+16+16]
- 
 
 278 
        mov     edx, [ebx+0x1be+12+16+16+16]
- 
 
 279 
        mov     cl, [ebx+0x1be+4+16+16+16]
- 
 
 280 
        jmp     hd_and_partition_ok
265 
 
 281 
 
266 
        mov     edx, eax
 282 
        ;mov     edx, eax
267 
        add     edx, [ebx+0x1be+8+16+16+16]
 283 
        ;add     edx, [ebx+0x1be+8+16+16+16]
268 
        push    edx
 284 
        ;push    edx
269 
        add     edx, [ebx+0x1be+12+16+16+16]
 285 
        ;add     edx, [ebx+0x1be+12+16+16+16]
270 
        dec     edx
 286 
        ;dec     edx
271 
        mov     [PARTITION_END], edx
 287 
        ;mov     [PARTITION_END], edx
272 
        mov     dl, [ebx+0x1be+4+16+16+16]
 288 
        ;mov     al, [ebx+0x1be+4+16+16+16]
273 
        mov     [fs_type], dl
 289 
        ;mov     [fs_type], dl
274 
        pop     edx
 290 
        ;pop     edx
275 
 
 291 
 
276 
test_ext_partition_0:
 292 
test_ext_partition_0:
277 
    push  eax
 293 
    pop   eax               ; ¯à®áâ® ¢ëª¨¤ë¢ ¥¬ ¨§ á⥪ 
278 
    mov   al,[ebx+0x1be+4]   ; get extended partition type
 - 
 
279 
    call  scan_extended_types
 294 
    mov   al,[ebx+0x1be+4]   ; get extended partition type
280 
    pop   eax
 295 
    call  scan_extended_types
281 
    jnz   test_ext_partition_1
 296 
    jnz   test_ext_partition_1
282 
 
 297 
 
283 
    mov   eax,[ebx+0x1be+8]     ; add relative start
 298 
    mov   eax,[ebx+0x1be+8]     ; add relative start
284 
    test  eax,eax               ; is there extended partition?
 299 
    test  eax,eax               ; is there extended partition?
285 
    jnz   new_mbr               ; yes. read it
 300 
    jnz   new_mbr               ; yes. read it
286 
 
 301 
 
287 
test_ext_partition_1:
 302 
test_ext_partition_1:
288 
    push  eax
 - 
 
289 
    mov   al,[ebx+0x1be+4+16]   ; get extended partition type
 303 
    mov   al,[ebx+0x1be+4+16]   ; get extended partition type
290 
    call  scan_extended_types
 304 
    call  scan_extended_types
291 
    pop   eax
 - 
 
292 
    jnz   test_ext_partition_2
 305 
    jnz   test_ext_partition_2
293 
 
 306 
 
294 
    mov   eax,[ebx+0x1be+8+16]  ; add relative start
 307 
    mov   eax,[ebx+0x1be+8+16]  ; add relative start
295 
    test  eax,eax               ; is there extended partition?
 308 
    test  eax,eax               ; is there extended partition?
296 
    jnz   new_mbr               ; yes. read it
 309 
    jnz   new_mbr               ; yes. read it
297 
 
 310 
 
298 
test_ext_partition_2:
 311 
test_ext_partition_2:
299 
    push  eax
 - 
 
300 
    mov   al,[ebx+0x1be+4+16+16]   ; get extended partition type
 312 
    mov   al,[ebx+0x1be+4+16+16]   ; get extended partition type
301 
    call  scan_extended_types
 313 
    call  scan_extended_types
302 
    pop   eax
 - 
 
303 
    jnz   test_ext_partition_3
 314 
    jnz   test_ext_partition_3
304 
 
 315 
 
305 
    mov   eax,[ebx+0x1be+8+16+16]     ; add relative start
 316 
    mov   eax,[ebx+0x1be+8+16+16]     ; add relative start
306 
    test  eax,eax               ; is there extended partition?
 317 
    test  eax,eax               ; is there extended partition?
307 
    jnz   new_mbr               ; yes. read it
 318 
    jnz   new_mbr               ; yes. read it
308 
 
 319 
 
309 
test_ext_partition_3:
 320 
test_ext_partition_3:
310 
    push  eax
 - 
 
311 
    mov   al,[ebx+0x1be+4+16+16+16]   ; get extended partition type
 321 
    mov   al,[ebx+0x1be+4+16+16+16]   ; get extended partition type
312 
    call  scan_extended_types
 322 
    call  scan_extended_types
313 
    pop   eax
 - 
 
314 
    jnz   end_partition_chain   ; no. end chain
 323 
    jnz   end_partition_chain   ; no. end chain
315 
 
 324 
 
316 
    mov   eax,[ebx+0x1be+8+16+16+16]  ; get start of extended partition
 325 
    mov   eax,[ebx+0x1be+8+16+16+16]  ; get start of extended partition
317 
    test  eax,eax               ; is there extended partition?
 326 
    test  eax,eax               ; is there extended partition?
318 
    jnz   new_mbr               ; yes. read it
 327 
    jnz   new_mbr               ; yes. read it
319 
 
 328 
 
320 
end_partition_chain:
 329 
end_partition_chain:
321 
    mov   [partition_count],ecx
 330 
    ;mov   [partition_count],ecx
- 
 
 331 
 
- 
 
 332 
    ;cmp   edx,-1                ; found wanted partition?
- 
 
 333 
    ;jnz   hd_and_partition_ok   ; yes. install it
- 
 
 334 
    ;jmp   problem_partition_or_fat
- 
 
 335 
problem_hd:
- 
 
 336 
    or    [problem_partition], 2
- 
 
 337 
    jmp   return_from_part_set
322 
 
 - 
 
323 
    cmp   edx,-1                ; found wanted partition?
 - 
 
324 
    jnz   hd_and_partition_ok   ; yes. install it
 - 
 
325 
    jmp   problem_partition_or_fat
 338 
 
326 
 
 339 
 
327 
scan_partition_types:
 340 
scan_partition_types:
328 
    push  ecx
 341 
    push  ecx
329 
    mov   edi,partition_types
 342 
    mov   edi,partition_types
330 
    mov   ecx,partition_types_end-partition_types
 343 
    mov   ecx,partition_types_end-partition_types
331 
    cld
 344 
    cld
332 
    repne scasb                 ; is partition type ok?
 345 
    repne scasb                 ; is partition type ok?
333 
    pop   ecx
 346 
    pop   ecx
334 
    ret
 347 
    ret
335 
 
 348 
 
336 
scan_extended_types:
 349 
scan_extended_types:
337 
    push  ecx
 350 
    push  ecx
338 
    mov   edi,extended_types
 351 
    mov   edi,extended_types
339 
    mov   ecx,extended_types_end-extended_types
 352 
    mov   ecx,extended_types_end-extended_types
340 
    cld
 353 
    cld
341 
    repne scasb                 ; is it extended partition?
 354 
    repne scasb                 ; is it extended partition?
342 
    pop   ecx
 355 
    pop   ecx
343 
    ret
 356 
    ret
344 
 
 357 
 
345 
problem_fat_dec_count:          ; bootsector is missing or another problem
 358 
problem_fat_dec_count:          ; bootsector is missing or another problem
346 
    dec   [partition_count]     ; remove it from partition_count
 359 
;    dec   [partition_count]     ; remove it from partition_count
347 
 
 360 
 
348 
problem_partition_or_fat:
 361 
problem_partition_or_fat:
349 
problem_hd:
 - 
 
- 
 
 362 
    or    [problem_partition],1
- 
 
 363 
 
350 
    popad
 364 
return_from_part_set:
351 
 
 365 
    popad
352 
    mov   [fs_type],0
 366 
    ;mov   [fs_type],0
353 
    call  free_hd_channel
 - 
 
354 
    mov   [hd1_status],0        ; free
 367 
    call  free_hd_channel
355 
    mov   [problem_partition],1
 368 
    mov   [hd1_status],0        ; free
356 
    ret
 369 
    ret
357 
 
 370 
 
358 
hd_and_partition_ok:
 371 
hd_and_partition_ok:
- 
 
 372 
 
- 
 
 373 
;eax = PARTITION_START edx=PARTITION_LENGTH cl=fs_type
- 
 
 374 
    mov   [fs_type], cl
359 
    mov   eax,edx
 375 
    ;mov   eax,edx
360 
    mov   [PARTITION_START],eax
 376 
    mov   [PARTITION_START],eax
- 
 
 377 
    add   edx, eax
- 
 
 378 
    dec   edx
- 
 
 379 
    mov   [PARTITION_END], edx
- 
 
 380 
 
361 
        mov     edx, [PARTITION_END]
 381 
   ;     mov     edx, [PARTITION_END]
362 
        sub     edx, eax
 382 
   ;     sub     edx, eax
363 
        inc     edx     ; edx = length of partition
 383 
   ;     inc     edx     ; edx = length of partition § ç¥¬ ®­® ­ ¬??
364 
 
 384 
 
365 
;    mov   [hd_setup],1
 385 
;    mov   [hd_setup],1
366 
    mov   ebx,buffer
 386 
    mov   ebx,buffer
367 
    call  hd_read               ; read boot sector of partition
 387 
    call  hd_read               ; read boot sector of partition
368 
        cmp     [hd_error], 0
 388 
        cmp     [hd_error], 0
369 
        jz      boot_read_ok
 389 
        jz      boot_read_ok
370 
        cmp     [fs_type], 7
 390 
        cmp     [fs_type], 7
371 
        jnz     problem_fat_dec_count
 391 
        jnz     problem_fat_dec_count
372 
; NTFS duplicates bootsector:
 392 
; NTFS duplicates bootsector:
373 
; NT4/2k/XP+ saves bootsector copy in the end of disk
 393 
; NT4/2k/XP+ saves bootsector copy in the end of disk
374 
; NT 3.51 saves bootsector copy in the middle of disk
 394 
; NT 3.51 saves bootsector copy in the middle of disk
375 
        and     [hd_error], 0
 395 
        and     [hd_error], 0
376 
        mov     eax, [PARTITION_END]
 396 
        mov     eax, [PARTITION_END]
377 
        call    hd_read
 397 
        call    hd_read
378 
        cmp     [hd_error], 0
 398 
        cmp     [hd_error], 0
379 
        jnz     @f
 399 
        jnz     @f
380 
        call    ntfs_test_bootsec
 400 
        call    ntfs_test_bootsec
381 
        jnc     boot_read_ok
 401 
        jnc     boot_read_ok
382 
@@:
 402 
@@:
383 
        and     [hd_error], 0
 403 
        and     [hd_error], 0
384 
        mov     eax, edx
 404 
        mov     eax, edx
385 
        shr     eax, 1
 405 
        shr     eax, 1
386 
        add     eax, [PARTITION_START]
 406 
        add     eax, [PARTITION_START]
387 
        call    hd_read
 407 
        call    hd_read
388 
        cmp     [hd_error], 0
 408 
        cmp     [hd_error], 0
389 
        jnz     problem_fat_dec_count   ; no chance...
 409 
        jnz     problem_fat_dec_count   ; no chance...
390 
boot_read_ok:
 410 
boot_read_ok:
391 
 
 411 
 
392 
; if we are running on NTFS, check bootsector
 412 
; if we are running on NTFS, check bootsector
393 
 
 413 
 
394 
        call    ntfs_test_bootsec      ; test ntfs
 414 
        call    ntfs_test_bootsec      ; test ntfs
395 
        jnc     ntfs_setup
 415 
        jnc     ntfs_setup
396 
 
 416 
 
397 
        call    ext2_test_superblock   ; test ext2fs
 417 
        call    ext2_test_superblock   ; test ext2fs
398 
        jnc	ext2_setup
 418 
        jnc     ext2_setup
399 
 
 419 
 
400 
        mov	eax, [PARTITION_START]	;ext2 test changes [buffer]
 420 
        mov     eax, [PARTITION_START]	;ext2 test changes [buffer]
401 
        call	hd_read
 421 
        call    hd_read
402 
        cmp     [hd_error], 0
 422 
        cmp     [hd_error], 0
403 
        jnz	problem_fat_dec_count
 423 
        jnz     problem_fat_dec_count
404 
 
 424 
 
405 
    cmp   word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
 425 
    cmp   word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
406 
    jnz   problem_fat_dec_count
 426 
    jnz   problem_fat_dec_count
407 
 
 427 
 
408 
    movzx eax,word [ebx+0xe]    ; sectors reserved
 428 
    movzx eax,word [ebx+0xe]    ; sectors reserved
409 
    add   eax,[PARTITION_START]
 429 
    add   eax,[PARTITION_START]
410 
    mov   [FAT_START],eax       ; fat_start = partition_start + reserved
 430 
    mov   [FAT_START],eax       ; fat_start = partition_start + reserved
411 
 
 431 
 
412 
    movzx eax,byte [ebx+0xd]    ; sectors per cluster
 432 
    movzx eax,byte [ebx+0xd]    ; sectors per cluster
413 
    test  eax,eax
 433 
    test  eax,eax
414 
    jz    problem_fat_dec_count
 434 
    jz    problem_fat_dec_count
415 
    mov   [SECTORS_PER_CLUSTER],eax
 435 
    mov   [SECTORS_PER_CLUSTER],eax
416 
 
 436 
 
417 
    movzx ecx,word [ebx+0xb]    ; bytes per sector
 437 
    movzx ecx,word [ebx+0xb]    ; bytes per sector
418 
    cmp   ecx,0x200
 438 
    cmp   ecx,0x200
419 
    jnz   problem_fat_dec_count
 439 
    jnz   problem_fat_dec_count
420 
    mov   [BYTES_PER_SECTOR],ecx
 440 
    mov   [BYTES_PER_SECTOR],ecx
421 
 
 441 
 
422 
    movzx eax,word [ebx+0x11]   ; count of rootdir entries (=0 fat32)
 442 
    movzx eax,word [ebx+0x11]   ; count of rootdir entries (=0 fat32)
423 
    mov   edx,32
 443 
    mov   edx,32
424 
    mul   edx
 444 
    mul   edx
425 
    dec   ecx
 445 
    dec   ecx
426 
    add   eax,ecx               ; round up if not equal count
 446 
    add   eax,ecx               ; round up if not equal count
427 
    inc   ecx                   ; bytes per sector
 447 
    inc   ecx                   ; bytes per sector
428 
    div   ecx
 448 
    div   ecx
429 
    mov   [ROOT_SECTORS],eax    ; count of rootdir sectors
 449 
    mov   [ROOT_SECTORS],eax    ; count of rootdir sectors
430 
 
 450 
 
431 
    movzx eax,word [ebx+0x16]   ; sectors per fat <65536
 451 
    movzx eax,word [ebx+0x16]   ; sectors per fat <65536
432 
    test  eax,eax
 452 
    test  eax,eax
433 
    jnz   fat16_fatsize
 453 
    jnz   fat16_fatsize
434 
    mov   eax,[ebx+0x24]        ; sectors per fat
 454 
    mov   eax,[ebx+0x24]        ; sectors per fat
435 
  fat16_fatsize:
 455 
  fat16_fatsize:
436 
    mov   [SECTORS_PER_FAT],eax
 456 
    mov   [SECTORS_PER_FAT],eax
437 
 
 457 
 
438 
    movzx eax,byte [ebx+0x10]   ; number of fats
 458 
    movzx eax,byte [ebx+0x10]   ; number of fats
439 
    test  eax,eax               ; if 0 it's not fat partition
 459 
    test  eax,eax               ; if 0 it's not fat partition
440 
    jz    problem_fat_dec_count
 460 
    jz    problem_fat_dec_count
441 
    mov   [NUMBER_OF_FATS],eax
 461 
    mov   [NUMBER_OF_FATS],eax
442 
    imul  eax,[SECTORS_PER_FAT]
 462 
    imul  eax,[SECTORS_PER_FAT]
443 
    add   eax,[FAT_START]
 463 
    add   eax,[FAT_START]
444 
    mov   [ROOT_START],eax      ; rootdir = fat_start + fat_size * fat_count
 464 
    mov   [ROOT_START],eax      ; rootdir = fat_start + fat_size * fat_count
445 
    add   eax,[ROOT_SECTORS]    ; rootdir sectors should be 0 on fat32
 465 
    add   eax,[ROOT_SECTORS]    ; rootdir sectors should be 0 on fat32
446 
    mov   [DATA_START],eax      ; data area = rootdir + rootdir_size
 466 
    mov   [DATA_START],eax      ; data area = rootdir + rootdir_size
447 
 
 467 
 
448 
    movzx eax,word [ebx+0x13]   ; total sector count <65536
 468 
    movzx eax,word [ebx+0x13]   ; total sector count <65536
449 
    test  eax,eax
 469 
    test  eax,eax
450 
    jnz   fat16_total
 470 
    jnz   fat16_total
451 
    mov   eax,[ebx+0x20]        ; total sector count
 471 
    mov   eax,[ebx+0x20]        ; total sector count
452 
  fat16_total:
 472 
  fat16_total:
453 
    add   eax,[PARTITION_START]
 473 
    add   eax,[PARTITION_START]
454 
    dec   eax
 474 
    dec   eax
455 
    mov   [PARTITION_END],eax
 475 
    mov   [PARTITION_END],eax
456 
    inc   eax
 476 
    inc   eax
457 
    sub   eax,[DATA_START]      ; eax = count of data sectors
 477 
    sub   eax,[DATA_START]      ; eax = count of data sectors
458 
    xor   edx,edx
 478 
    xor   edx,edx
459 
    div   dword [SECTORS_PER_CLUSTER]
 479 
    div   dword [SECTORS_PER_CLUSTER]
460 
    inc   eax
 480 
    inc   eax
461 
    mov   [LAST_CLUSTER],eax
 481 
    mov   [LAST_CLUSTER],eax
462 
    dec   eax                   ; cluster count
 482 
    dec   eax                   ; cluster count
463 
    mov   [fatStartScan],2
 483 
    mov   [fatStartScan],2
464 
 
 484 
 
465 
    ; limits by Microsoft Hardware White Paper v1.03
 485 
    ; limits by Microsoft Hardware White Paper v1.03
466 
    cmp   eax,4085              ; 0xff5
 486 
    cmp   eax,4085              ; 0xff5
467 
    jb    problem_fat_dec_count ; fat12 not supported
 487 
    jb    problem_fat_dec_count ; fat12 not supported
468 
    cmp   eax,65525             ; 0xfff5
 488 
    cmp   eax,65525             ; 0xfff5
469 
    jb    fat16_partition
 489 
    jb    fat16_partition
470 
 
 490 
 
471 
fat32_partition:
 491 
fat32_partition:
472 
    mov   eax,[ebx+0x2c]        ; rootdir cluster
 492 
    mov   eax,[ebx+0x2c]        ; rootdir cluster
473 
    mov   [ROOT_CLUSTER],eax
 493 
    mov   [ROOT_CLUSTER],eax
474 
    movzx eax,word [ebx+0x30]   ; fs info sector
 494 
    movzx eax,word [ebx+0x30]   ; fs info sector
475 
    add   eax,[PARTITION_START]
 495 
    add   eax,[PARTITION_START]
476 
    mov   [ADR_FSINFO],eax
 496 
    mov   [ADR_FSINFO],eax
477 
    call  hd_read
 497 
    call  hd_read
478 
    mov   eax,[ebx+0x1ec]
 498 
    mov   eax,[ebx+0x1ec]
479 
    cmp   eax,-1
 499 
    cmp   eax,-1
480 
    jz    @f
 500 
    jz    @f
481 
    mov   [fatStartScan],eax
 501 
    mov   [fatStartScan],eax
482 
@@:
 502 
@@:
483 
 
 503 
 
484 
    popad
 504 
    popad
485 
 
 505 
 
486 
    mov   [fatRESERVED],0x0FFFFFF6
 506 
    mov   [fatRESERVED],0x0FFFFFF6
487 
    mov   [fatBAD],0x0FFFFFF7
 507 
    mov   [fatBAD],0x0FFFFFF7
488 
    mov   [fatEND],0x0FFFFFF8
 508 
    mov   [fatEND],0x0FFFFFF8
489 
    mov   [fatMASK],0x0FFFFFFF
 509 
    mov   [fatMASK],0x0FFFFFFF
490 
    mov   [fs_type],32         ; Fat32
 510 
    mov   [fs_type],32         ; Fat32
491 
    call  free_hd_channel
 511 
    call  free_hd_channel
492 
    mov   [hd1_status],0        ; free
 512 
    mov   [hd1_status],0        ; free
493 
    ret
 513 
    ret
494 
 
 514 
 
495 
fat16_partition:
 515 
fat16_partition:
496 
    xor   eax,eax
 516 
    xor   eax,eax
497 
    mov   [ROOT_CLUSTER],eax
 517 
    mov   [ROOT_CLUSTER],eax
498 
 
 518 
 
499 
    popad
 519 
    popad
500 
 
 520 
 
501 
    mov   [fatRESERVED],0x0000FFF6
 521 
    mov   [fatRESERVED],0x0000FFF6
502 
    mov   [fatBAD],0x0000FFF7
 522 
    mov   [fatBAD],0x0000FFF7
503 
    mov   [fatEND],0x0000FFF8
 523 
    mov   [fatEND],0x0000FFF8
504 
    mov   [fatMASK],0x0000FFFF
 524 
    mov   [fatMASK],0x0000FFFF
505 
    mov   [fs_type],16         ; Fat16
 525 
    mov   [fs_type],16         ; Fat16
506 
    call  free_hd_channel
 526 
    call  free_hd_channel
507 
    mov   [hd1_status],0        ; free
 527 
    mov   [hd1_status],0        ; free
508 
    ret
 528 
    ret
- 
 
 529 
>
509 
>
 530 
>
510 
>
 531 
;>
511 
;>
 532 
>
512 
>
 533 
>
513 
>
 534 
>
514 
>
 535 
>
515 
>
 -