184 lines
4.8 KiB
C
184 lines
4.8 KiB
C
/* multiboot.h - multiboot header file. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2007 Free Software Foundation, Inc.
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*
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* GRUB 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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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_MULTIBOOT_MACHINE_HEADER
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#define GRUB_MULTIBOOT_MACHINE_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 GRUB_MB_SEARCH 8192
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/* The magic field should contain this. */
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#define GRUB_MB_MAGIC 0x1BADB002
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/* This should be in %eax. */
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#define GRUB_MB_MAGIC2 0x2BADB002
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/* The bits in the required part of flags field we don't support. */
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#define GRUB_MB_UNSUPPORTED 0x0000fffc
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/* Alignment of multiboot modules. */
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#define GRUB_MB_MOD_ALIGN 0x00001000
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/*
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* Flags set in the 'flags' member of the multiboot header.
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*/
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/* Align all boot modules on i386 page (4KB) boundaries. */
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#define GRUB_MB_PAGE_ALIGN 0x00000001
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/* Must pass memory information to OS. */
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#define GRUB_MB_MEMORY_INFO 0x00000002
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/* Must pass video information to OS. */
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#define GRUB_MB_VIDEO_MODE 0x00000004
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/* This flag indicates the use of the address fields in the header. */
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#define GRUB_MB_AOUT_KLUDGE 0x00010000
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/*
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* Flags to be set in the 'flags' member of the multiboot info structure.
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*/
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/* is there basic lower/upper memory information? */
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#define GRUB_MB_INFO_MEMORY 0x00000001
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/* is there a boot device set? */
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#define GRUB_MB_INFO_BOOTDEV 0x00000002
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/* is the command-line defined? */
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#define GRUB_MB_INFO_CMDLINE 0x00000004
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/* are there modules to do something with? */
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#define GRUB_MB_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 GRUB_MB_INFO_AOUT_SYMS 0x00000010
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/* is there an ELF section header table? */
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#define GRUB_MB_INFO_ELF_SHDR 0x00000020
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/* is there a full memory map? */
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#define GRUB_MB_INFO_MEM_MAP 0x00000040
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/* Is there drive info? */
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#define GRUB_MB_INFO_DRIVE_INFO 0x00000080
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/* Is there a config table? */
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#define GRUB_MB_INFO_CONFIG_TABLE 0x00000100
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/* Is there a boot loader name? */
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#define GRUB_MB_INFO_BOOT_LOADER_NAME 0x00000200
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/* Is there a APM table? */
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#define GRUB_MB_INFO_APM_TABLE 0x00000400
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/* Is there video information? */
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#define GRUB_MB_INFO_VIDEO_INFO 0x00000800
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#ifndef ASM_FILE
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#include <grub/types.h>
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struct grub_multiboot_header
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{
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/* Must be GRUB_MB_MAGIC - see above. */
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grub_uint32_t magic;
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/* Feature flags. */
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grub_uint32_t flags;
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/* The above fields plus this one must equal 0 mod 2^32. */
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grub_uint32_t checksum;
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/* These are only valid if GRUB_MB_AOUT_KLUDGE is set. */
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grub_uint32_t header_addr;
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grub_uint32_t load_addr;
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grub_uint32_t load_end_addr;
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grub_uint32_t bss_end_addr;
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grub_uint32_t entry_addr;
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/* These are only valid if GRUB_MB_VIDEO_MODE is set. */
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grub_uint32_t mode_type;
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grub_uint32_t width;
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grub_uint32_t height;
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grub_uint32_t depth;
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};
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struct grub_multiboot_info
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{
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/* Multiboot info version number */
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grub_uint32_t flags;
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/* Available memory from BIOS */
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grub_uint32_t mem_lower;
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grub_uint32_t mem_upper;
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/* "root" partition */
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grub_uint32_t boot_device;
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/* Kernel command line */
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grub_uint32_t cmdline;
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/* Boot-Module list */
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grub_uint32_t mods_count;
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grub_uint32_t mods_addr;
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grub_uint32_t syms[4];
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/* Memory Mapping buffer */
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grub_uint32_t mmap_length;
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grub_uint32_t mmap_addr;
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/* Drive Info buffer */
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grub_uint32_t drives_length;
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grub_uint32_t drives_addr;
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/* ROM configuration table */
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grub_uint32_t config_table;
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/* Boot Loader Name */
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grub_uint32_t boot_loader_name;
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/* APM table */
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grub_uint32_t apm_table;
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/* Video */
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grub_uint32_t vbe_control_info;
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grub_uint32_t vbe_mode_info;
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grub_uint16_t vbe_mode;
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grub_uint16_t vbe_interface_seg;
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grub_uint16_t vbe_interface_off;
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grub_uint16_t vbe_interface_len;
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};
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struct grub_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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grub_uint32_t mod_start;
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grub_uint32_t mod_end;
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/* Module command line */
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grub_uint32_t cmdline;
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/* padding to take it to 16 bytes (must be zero) */
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grub_uint32_t pad;
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};
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#endif /* ! ASM_FILE */
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#endif /* ! GRUB_MULTIBOOT_MACHINE_HEADER */
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