Subversion Repositories Kolibri OS

Rev

Rev 3742 | Rev 4772 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2288 clevermous 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2 
;;                                                              ;;
3742 clevermous 3 
;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
2288 clevermous 4 
;; Distributed under terms of the GNU General Public License    ;;
5 
;;                                                              ;;
6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
7 
 
8 
$Revision: 3744 $
9 
 
10 
 
3742 clevermous 11 
read_ramdisk:
2288 clevermous 12 
; READ RAMDISK IMAGE FROM HD
13 
 
14 
        cmp     [boot_dev+OS_BASE+0x10000], 1
15 
        jne     no_sys_on_hd
16 
 
3742 clevermous 17 
        xor     ebp, ebp
18 
.hd_loop:
19 
        lea     eax, [ebp+'0']
20 
        mov     [read_image_fsinfo.name_digit], al
21 
        movzx   eax, byte [DRIVE_DATA+2+ebp]
22 
        test    eax, eax
23 
        jz      .next_hd
24 
        push    eax
25 
        mov     esi, 1
26 
.partition_loop:
27 
        mov     eax, esi
28 
        push    -'0'
29 
@@:
30 
        xor     edx, edx
31 
        div     [_10]
32 
        push    edx
33 
        test    eax, eax
34 
        jnz     @b
35 
        mov     edi, read_image_fsinfo.partition
36 
@@:
37 
        pop     eax
38 
        add     al, '0'
39 
        stosb
40 
        jnz     @b
41 
        mov     byte [edi-1], '/'
42 
        push    esi edi
43 
        mov     esi, bootpath1
44 
        mov     ecx, bootpath1.len
45 
        rep movsb
2288 clevermous 46 
        call    read_image
47 
        test    eax, eax
3742 clevermous 48 
        jz      .yes
49 
        cmp     eax, 6
50 
        jz      .yes
51 
        pop     edi
52 
        push    edi
53 
        mov     esi, bootpath2
54 
        mov     ecx, bootpath2.len
55 
        rep movsb
2288 clevermous 56 
        call    read_image
57 
        test    eax, eax
3742 clevermous 58 
        jz      .yes
59 
        cmp     eax, 6
60 
        jz      .yes
61 
        pop     edi esi
62 
        inc     esi
63 
        cmp     esi, [esp]
64 
        jbe     .partition_loop
65 
        pop     eax
66 
.next_hd:
67 
        inc     ebp
68 
        cmp     ebp, 4
69 
        jb      .hd_loop
70 
        jmp     no_sys_on_hd
71 
.yes:
72 
        pop     edi esi eax
73 
        jmp     yes_sys_on_hd
2288 clevermous 74 
 
2643 clevermous 75 
iglobal
76 
align 4
77 
read_image_fsinfo:
78 
        dd      0               ; function: read
79 
        dq      0               ; offset: zero
3744 clevermous 80 
        dd      1474560         ; size
2643 clevermous 81 
        dd      RAMDISK         ; buffer
3742 clevermous 82 
        db      '/hd'
83 
.name_digit db  '0'
84 
        db      '/'
85 
.partition:
86 
        rb      64      ; should be enough for '255/KOLIBRI/KOLIBRI.IMG'
87 
 
88 
bootpath1       db      'KOLIBRI.IMG',0
89 
.len = $ - bootpath1
90 
bootpath2       db      'KOLIBRI/KOLIBRI.IMG',0
91 
.len = $ - bootpath2
2643 clevermous 92 
endg
93 
 
2288 clevermous 94 
read_image:
2643 clevermous 95 
        mov     ebx, read_image_fsinfo
96 
        pushad
3296 clevermous 97 
        call    file_system_lfn_protected
2643 clevermous 98 
        popad
2288 clevermous 99 
        ret
100 
 
101 
no_sys_on_hd:
102 
        ; test_to_format_ram_disk (need if not using ram disk)
103 
        cmp     [boot_dev+OS_BASE+0x10000], 3
104 
        jne     not_format_ram_disk
105 
        ; format_ram_disk
106 
        mov     edi, RAMDISK
107 
        mov     ecx, 0x1080
108 
        xor     eax, eax
109 
@@:
110 
        stosd
111 
        loop    @b
112 
 
113 
        mov     ecx, 0x58F7F
114 
        mov     eax, 0xF6F6F6F6
115 
@@:
116 
        stosd
117 
        loop    @b
118 
 
119 
        mov     [RAMDISK+0x200], dword 0xFFFFF0         ; fat table
120 
        mov     [RAMDISK+0x4200], dword 0xFFFFF0
121 
 
122 
not_format_ram_disk:
123 
yes_sys_on_hd: