stuff
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Adrien Bourmault
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//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: multiboot.h - Multiboot header file. //
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// //
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// //
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// Copyright © 1999,2003,2007-2010 Free Software Foundation, Inc. //
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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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// 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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#ifndef MULTIBOOT_HEADER
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#define MULTIBOOT_HEADER 1
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/* How many bytes from the start of the file we search for the header. */
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#define MULTIBOOT_SEARCH 8192
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#define MULTIBOOT_HEADER_ALIGN 4
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/* The magic field should contain this. */
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#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
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/* This should be in %eax. */
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#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
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/* Alignment of multiboot modules. */
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#define MULTIBOOT_MOD_ALIGN 0x00001000
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/* Alignment of the multiboot info structure. */
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#define MULTIBOOT_INFO_ALIGN 0x00000004
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/* Flags set in the 'flags' member of the multiboot header. */
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/* Align all boot modules on i386 page (4KB) boundaries. */
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#define MULTIBOOT_PAGE_ALIGN 0x00000001
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/* Must pass memory information to OS. */
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#define MULTIBOOT_MEMORY_INFO 0x00000002
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/* Must pass video information to OS. */
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#define MULTIBOOT_VIDEO_MODE 0x00000004
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/* This flag indicates the use of the address fields in the header. */
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#define MULTIBOOT_AOUT_KLUDGE 0x00010000
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#define MULTIBOOT_INFO_MEMORY 0x00000001
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/* is there a boot device set? */
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#define MULTIBOOT_INFO_BOOTDEV 0x00000002
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/* is the command-line defined? */
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#define MULTIBOOT_INFO_CMDLINE 0x00000004
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/* are there modules to do something with? */
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#define MULTIBOOT_INFO_MODS 0x00000008
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/* These next two are mutually exclusive */
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/* is there a symbol table loaded? */
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#define MULTIBOOT_INFO_AOUT_SYMS 0x00000010
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/* is there an ELF section header table? */
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#define MULTIBOOT_INFO_ELF_SHDR 0x00000020
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/* is there a full memory map? */
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#define MULTIBOOT_INFO_MEM_MAP 0x00000040
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/* Is there drive info? */
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#define MULTIBOOT_INFO_DRIVE_INFO 0x00000080
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/* Is there a config table? */
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#define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100
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/* Is there a boot loader name? */
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#define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200
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/* Is there a APM table? */
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#define MULTIBOOT_INFO_APM_TABLE 0x00000400
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/* Is there video information? */
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#define MULTIBOOT_INFO_VBE_INFO 0x00000800
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#define MULTIBOOT_INFO_FRAMEBUFFER_INFO 0x00001000
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#ifndef ASM_FILE
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typedef unsigned char uchar;
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typedef unsigned short ushort;
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typedef unsigned int uint;
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typedef unsigned long long ullong;
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struct multiboot_header
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{
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/* Must be MULTIBOOT_MAGIC - see above. */
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uint magic;
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/* Feature flags. */
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uint flags;
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/* The above fields plus this one must equal 0 mod 2^32. */
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uint checksum;
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/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
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uint header_addr;
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uint load_addr;
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uint load_end_addr;
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uint bss_end_addr;
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uint entry_addr;
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/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
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uint mode_type;
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uint width;
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uint height;
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uint depth;
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};
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/* The symbol table for a.out. */
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struct multiboot_aout_symbol_table
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{
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uint tabsize;
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uint strsize;
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uint addr;
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uint reserved;
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};
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typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
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/* The section header table for ELF. */
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struct multiboot_elf_section_header_table
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{
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uint num;
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uint size;
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uint addr;
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uint shndx;
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};
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typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
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struct multiboot_info
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{
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/* Multiboot info version number */
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uint flags;
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/* Available memory from BIOS */
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uint mem_lower;
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uint mem_upper;
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/* "root" partition */
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uint boot_device;
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/* Kernel command line */
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uint cmdline;
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/* Boot-Module list */
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uint mods_count;
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uint mods_addr;
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union
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{
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multiboot_aout_symbol_table_t aout_sym;
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multiboot_elf_section_header_table_t elf_sec;
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} u;
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/* Memory Mapping buffer */
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uint mmap_length;
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uint mmap_addr;
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/* Drive Info buffer */
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uint drives_length;
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uint drives_addr;
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/* ROM configuration table */
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uint config_table;
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/* Boot Loader Name */
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uint boot_loader_name;
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/* APM table */
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uint apm_table;
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/* Video */
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uint vbe_control_info;
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uint vbe_mode_info;
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ushort vbe_mode;
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ushort vbe_interface_seg;
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ushort vbe_interface_off;
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ushort vbe_interface_len;
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ullong framebuffer_addr;
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uint framebuffer_pitch;
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uint framebuffer_width;
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uint framebuffer_height;
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uchar framebuffer_bpp;
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#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
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#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
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#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
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uchar framebuffer_type;
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union
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{
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struct
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{
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uint framebuffer_palette_addr;
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ushort framebuffer_palette_num_colors;
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};
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struct
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{
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uchar framebuffer_red_field_position;
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uchar framebuffer_red_mask_size;
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uchar framebuffer_green_field_position;
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uchar framebuffer_green_mask_size;
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uchar framebuffer_blue_field_position;
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uchar framebuffer_blue_mask_size;
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};
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};
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};
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typedef struct multiboot_info multiboot_info_t;
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struct multiboot_color
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{
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uchar red;
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uchar green;
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uchar blue;
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};
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struct multiboot_mmap_entry
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{
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uint size;
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ullong addr;
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ullong len;
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#define MULTIBOOT_MEMORY_AVAILABLE 1
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#define MULTIBOOT_MEMORY_RESERVED 2
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#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
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#define MULTIBOOT_MEMORY_NVS 4
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#define MULTIBOOT_MEMORY_BADRAM 5
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uint type;
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} __attribute__((packed));
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typedef struct multiboot_mmap_entry multiboot_memory_map_t;
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struct multiboot_mod_list
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{
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/* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
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uint mod_start;
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uint mod_end;
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/* Module command line */
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uint cmdline;
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/* padding to take it to 16 bytes (must be zero) */
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uint pad;
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};
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typedef struct multiboot_mod_list multiboot_module_t;
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/* APM BIOS info. */
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struct multiboot_apm_info
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{
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ushort version;
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ushort cseg;
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uint offset;
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ushort cseg_16;
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ushort dseg;
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ushort flags;
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ushort cseg_len;
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ushort cseg_16_len;
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ushort dseg_len;
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};
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#endif /* ! ASM_FILE */
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#endif /* ! MULTIBOOT_HEADER */
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