| 1 | ; Project name : Assembly Library
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| 2 | ; Description : Functions for rebooting computer.
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| 3 |
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| 4 | ;
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| 5 | ; XTIDE Universal BIOS and Associated Tools
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| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
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| 7 | ;
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| 8 | ; This program is free software; you can redistribute it and/or modify
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| 9 | ; it under the terms of the GNU General Public License as published by
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| 10 | ; the Free Software Foundation; either version 2 of the License, or
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| 11 | ; (at your option) any later version.
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| 12 | ;
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| 13 | ; This program is distributed in the hope that it will be useful,
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | ; GNU General Public License for more details.
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| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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| 18 | ;
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| 19 |
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| 20 | ; Section containing code
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| 21 | SECTION .text
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| 22 |
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| 23 | ;--------------------------------------------------------------------
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| 24 | ; Reboot_ComputerWithBootFlagInAX
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| 25 | ; Parameters:
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| 26 | ; AX: Boot Flag
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| 27 | ; Returns:
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| 28 | ; Nothing, function never returns
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| 29 | ;--------------------------------------------------------------------
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| 30 | Reboot_ComputerWithBootFlagInAX:
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| 31 | LOAD_BDA_SEGMENT_TO ds, bx
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| 32 | mov [BDA.wBoot], ax ; Store boot flag
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| 33 | ; Fall to Reboot_AT
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| 34 |
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| 35 |
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| 36 | ;--------------------------------------------------------------------
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| 37 | ; Reboot_AT
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| 38 | ; Parameters:
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| 39 | ; Nothing
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| 40 | ; Returns:
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| 41 | ; Nothing, function never returns
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| 42 | ;--------------------------------------------------------------------
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| 43 | Reboot_AT:
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| 44 | mov al, 0FEh ; System reset (AT+ keyboard controller)
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| 45 | out 64h, al ; Reset computer (AT+)
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| 46 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
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| 47 | %ifdef INCLUDE_TIME_LIBRARY
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| 48 | mov ax, 10
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| 49 | call Delay_MicrosecondsFromAX
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| 50 | %else
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| 51 | JMP_DELAY
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| 52 | %endif
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| 53 | %else
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| 54 | JMP_DELAY
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| 55 | %endif
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| 56 | ; Fall to Reboot_XT
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| 57 |
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| 58 |
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| 59 | ;--------------------------------------------------------------------
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| 60 | ; Reboot_XT
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| 61 | ; Parameters:
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| 62 | ; Nothing
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| 63 | ; Returns:
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| 64 | ; Nothing, function never returns
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| 65 | ;--------------------------------------------------------------------
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| 66 | Reboot_XT:
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| 67 | xor ax, ax
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| 68 | push ax
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| 69 | popf ; Clear FLAGS (disables interrupt)
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| 70 | mov ds, ax
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| 71 | mov es, ax
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| 72 | mov ss, ax
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| 73 | jmp 0FFFFh:0 ; XT reset
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