| 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : Functions for accessings BOOTVARS. |
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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 | ; BootVars_Initialize |
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| 25 | ; Parameters: |
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| 26 | ; DS: RAMVARS Segment |
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| 27 | ; ES: BDA Segment |
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| 28 | ; Returns: |
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| 29 | ; Nothing |
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| 30 | ; Corrupts registers: |
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| 31 | ; AX, CX, DX, DI |
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| 32 | ;-------------------------------------------------------------------- |
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| 33 | BootVars_Initialize: |
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| 34 | ; Clear to zero |
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| 35 | mov al, DRVDETECTINFO_size |
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| 36 | mul BYTE [cs:ROMVARS.bIdeCnt] |
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| 37 | mov di, BOOTVARS.clearToZeroFromThisPoint ; We must not initialize anything before this! |
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| 38 | add ax, BOOTVARS_size |
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| 39 | sub ax, di |
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| 40 | xchg cx, ax |
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| 41 | |
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| 42 | %ifdef MODULE_HOTKEYS |
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| 43 | call Memory_ZeroESDIwithSizeInCX |
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| 44 | |
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| 45 | ; Store default drives to boot from |
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| 46 | mov dl, [cs:ROMVARS.bBootDrv] |
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| 47 | |
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| 48 | ;-------------------------------------------------------------------- |
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| 49 | ; BootVars_StoreHotkeyForDriveNumberInDL |
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| 50 | ; Parameters: |
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| 51 | ; DL: Floppy or Hard Drive number |
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| 52 | ; DS: RAMVARS Segment |
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| 53 | ; ES: BDA Segment |
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| 54 | ; Returns: |
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| 55 | ; Nothing |
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| 56 | ; Corrupts registers: |
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| 57 | ; AX, CX, DI |
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| 58 | ;-------------------------------------------------------------------- |
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| 59 | BootVars_StoreHotkeyForDriveNumberInDL: |
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| 60 | mov WORD [es:BOOTVARS.hotkeyVars+HOTKEYVARS.wHddAndFddLetters], DEFAULT_HARD_DRIVE_LETTER | (DEFAULT_FLOPPY_DRIVE_LETTER<<8) |
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| 61 | call HotkeyBar_ConvertDriveNumberFromDLtoDriveLetter |
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| 62 | jmp HotkeyBar_StoreHotkeyToBootvarsForDriveLetterInDL |
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| 63 | |
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| 64 | %else |
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| 65 | jmp Memory_ZeroESDIwithSizeInCX |
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| 66 | |
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| 67 | %endif ; MODULE_HOTKEYS |
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