forked from KolibriOS/kolibrios
124 lines
3.2 KiB
PHP
124 lines
3.2 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
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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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$Revision$
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read_ramdisk:
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; READ RAMDISK IMAGE FROM HD
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cmp [boot_dev+OS_BASE+0x10000], 1
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jne no_sys_on_hd
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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
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call read_image
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test eax, eax
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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
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call read_image
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test eax, eax
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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:
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pop edi esi eax
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jmp yes_sys_on_hd
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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
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dd 1474560 ; size
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dd RAMDISK ; buffer
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db '/hd'
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.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
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endg
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read_image:
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mov ebx, read_image_fsinfo
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pushad
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call file_system_lfn_protected
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popad
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ret
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no_sys_on_hd:
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; test_to_format_ram_disk (need if not using ram disk)
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cmp [boot_dev+OS_BASE+0x10000], 3
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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:
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