2019-03-06 20:05:18 +01:00
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;=----------------------------------------------------------------------------=;
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; GNU GPL OS/K ;
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; ;
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; Desc: Multiboot header ;
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; (x86_64 architecture only) ;
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; ;
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; ;
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; Copyright © 2018-2019 The OS/K Team ;
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; ;
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; This file is part of OS/K. ;
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; ;
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; OS/K is free software: you can redistribute it and/or modify ;
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; it under the terms of the GNU General Public License as published by ;
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; the Free Software Foundation, either version 3 of the License, or ;
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; (at your option) any later version. ;
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; ;
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; OS/K is distributed in the hope that it will be useful, ;
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; but WITHOUT ANY WARRANTY; without even the implied warranty of ;
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;
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; GNU General Public License for more details. ;
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; ;
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; You should have received a copy of the GNU General Public License ;
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; along with OS/K. If not, see <https://www.gnu.org/licenses/>. ;
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;=----------------------------------------------------------------------------=;
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;; MULTIBOOT HEADER
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2019-03-08 08:43:44 +01:00
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MB_AOUT_KLUDGE equ 0 << 16 ; if we are not an ELF executable
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2019-03-08 21:56:01 +01:00
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MB_ALIGN equ 1 << 0 ; Ask to align loaded modules on page boundaries
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2019-03-06 20:05:18 +01:00
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MB_MEMINFO equ 1 << 1 ; Ask to provide memory map
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2019-03-22 15:03:41 +01:00
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MB_VIDEOINFO equ 1 << 2 ; Ask to provide video infos
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MB_VIDEO_MODE equ 0x1 ; Text mode
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MB_VIDEO_WIDTH equ 80
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MB_VIDEO_HEIGHT equ 24
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MB_VIDEO_DEPTH equ 0x0
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2019-03-06 20:05:18 +01:00
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MB_HEADER_MAGIC equ 0x1badb002
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MB_GRUB_MAGIC equ 0x2badb002
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2019-03-22 15:03:41 +01:00
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MB_HEADER_FLAGS equ MB_AOUT_KLUDGE|MB_ALIGN|MB_MEMINFO|MB_VIDEOINFO
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2019-03-06 20:05:18 +01:00
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CHECKSUM equ -(MB_HEADER_MAGIC + MB_HEADER_FLAGS)
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KERNEL_STACK equ 0x00200000 ; Stack starts at the 2mb address & grows down
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