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2288 clevermous 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
5363 yogev_ezra 3 
;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
2288 clevermous 4 
;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 8089 $
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3742 clevermous 11 
read_ramdisk:
4772 mario79 12 
; READ RAMDISK IMAGE FROM HD (only for IDE0, IDE1, IDE2, IDE3)
2288 clevermous 13 
 
8089 dunkaist 14 
        cmp     byte [BOOT.rd_load_from], RD_LOAD_FROM_HD
4772 mario79 15 
        jne     no_sys_on_hd.1
2288 clevermous 16 
 
3742 clevermous 17 
        xor     ebp, ebp
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.hd_loop:
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        lea     eax, [ebp+'0']
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        mov     [read_image_fsinfo.name_digit], al
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        movzx   eax, byte [DRIVE_DATA+2+ebp]
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        test    eax, eax
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        jz      .next_hd
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        push    eax
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        mov     esi, 1
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.partition_loop:
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        mov     eax, esi
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        push    -'0'
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@@:
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        xor     edx, edx
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        div     [_10]
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        push    edx
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        test    eax, eax
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        jnz     @b
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        mov     edi, read_image_fsinfo.partition
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@@:
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        pop     eax
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        add     al, '0'
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        stosb
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        jnz     @b
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        mov     byte [edi-1], '/'
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        push    esi edi
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        mov     esi, bootpath1
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        mov     ecx, bootpath1.len
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        rep movsb
2288 clevermous 46 
        call    read_image
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        test    eax, eax
3742 clevermous 48 
        jz      .yes
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        cmp     eax, 6
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        jz      .yes
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        pop     edi
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        push    edi
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        mov     esi, bootpath2
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        mov     ecx, bootpath2.len
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        rep movsb
2288 clevermous 56 
        call    read_image
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        test    eax, eax
3742 clevermous 58 
        jz      .yes
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        cmp     eax, 6
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        jz      .yes
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        pop     edi esi
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        inc     esi
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        cmp     esi, [esp]
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        jbe     .partition_loop
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        pop     eax
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.next_hd:
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        inc     ebp
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        cmp     ebp, 4
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        jb      .hd_loop
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        jmp     no_sys_on_hd
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.yes:
4772 mario79 72 
        DEBUGF 1, "K : RD found: %s\n", read_image_fsinfo.name
3742 clevermous 73 
        pop     edi esi eax
4772 mario79 74 
 
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        call    register_ramdisk
3742 clevermous 76 
        jmp     yes_sys_on_hd
4772 mario79 77 
;-----------------------------------------------------------------------------
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; Register ramdisk file system
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register_ramdisk:
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        mov     esi, boot_initramdisk
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        call    boot_log
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        call    ramdisk_init
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        ret
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;-----------------------------------------------------------------------------
2643 clevermous 85 
iglobal
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align 4
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read_image_fsinfo:
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        dd      0               ; function: read
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        dq      0               ; offset: zero
3744 clevermous 90 
        dd      1474560         ; size
2643 clevermous 91 
        dd      RAMDISK         ; buffer
4772 mario79 92 
.name   db      '/hd'
3742 clevermous 93 
.name_digit db  '0'
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        db      '/'
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.partition:
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        rb      64      ; should be enough for '255/KOLIBRI/KOLIBRI.IMG'
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bootpath1       db      'KOLIBRI.IMG',0
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.len = $ - bootpath1
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bootpath2       db      'KOLIBRI/KOLIBRI.IMG',0
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.len = $ - bootpath2
2643 clevermous 102 
endg
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2288 clevermous 104 
read_image:
2643 clevermous 105 
        mov     ebx, read_image_fsinfo
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        pushad
3296 clevermous 107 
        call    file_system_lfn_protected
2643 clevermous 108 
        popad
2288 clevermous 109 
        ret
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no_sys_on_hd:
4772 mario79 112 
        DEBUGF 1, "K : RD not found\n"
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.1:
2288 clevermous 114 
        ; test_to_format_ram_disk (need if not using ram disk)
8089 dunkaist 115 
        cmp     byte [BOOT.rd_load_from], RD_LOAD_FROM_FORMAT
2288 clevermous 116 
        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:
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yes_sys_on_hd: