270 lines
7.5 KiB
C
270 lines
7.5 KiB
C
/* multiboot.h - Multiboot header file. */
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/* Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY
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* DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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// https://imgflip.com/i/9cflls
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#pragma once
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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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/* Flags to be set in the ’flags’ member of the multiboot info structure. */
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/* is there basic lower/upper memory information? */
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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 multiboot_u8;
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typedef unsigned short multiboot_u16;
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typedef unsigned int multiboot_u32;
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typedef unsigned long long multiboot_u64;
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struct multiboot_header {
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/* Must be MULTIBOOT_MAGIC - see above. */
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multiboot_u32 magic;
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/* Feature flags. */
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multiboot_u32 flags;
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/* The above fields plus this one must equal 0 mod 2^32. */
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multiboot_u32 checksum;
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/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
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multiboot_u32 header_addr;
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multiboot_u32 load_addr;
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multiboot_u32 load_end_addr;
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multiboot_u32 bss_end_addr;
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multiboot_u32 entry_addr;
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/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
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multiboot_u32 mode_type;
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multiboot_u32 width;
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multiboot_u32 height;
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multiboot_u32 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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multiboot_u32 tabsize;
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multiboot_u32 strsize;
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multiboot_u32 addr;
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multiboot_u32 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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multiboot_u32 num;
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multiboot_u32 size;
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multiboot_u32 addr;
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multiboot_u32 shndx;
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};
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typedef struct multiboot_elf_section_header_table
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multiboot_elf_section_header_table_t;
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struct multiboot_info {
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/* Multiboot info version number */
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multiboot_u32 flags;
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/* Available memory from BIOS */
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multiboot_u32 mem_lower;
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multiboot_u32 mem_upper;
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/* "root" partition */
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multiboot_u32 boot_device;
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/* Kernel command line */
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multiboot_u32 cmdline;
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/* Boot-Module list */
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multiboot_u32 mods_count;
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multiboot_u32 mods_addr;
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union {
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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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multiboot_u32 mmap_length;
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multiboot_u32 mmap_addr;
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/* Drive Info buffer */
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multiboot_u32 drives_length;
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multiboot_u32 drives_addr;
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/* ROM configuration table */
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multiboot_u32 config_table;
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/* Boot Loader Name */
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multiboot_u32 boot_loader_name;
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/* APM table */
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multiboot_u32 apm_table;
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/* Video */
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multiboot_u32 vbe_control_info;
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multiboot_u32 vbe_mode_info;
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multiboot_u16 vbe_mode;
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multiboot_u16 vbe_interface_seg;
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multiboot_u16 vbe_interface_off;
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multiboot_u16 vbe_interface_len;
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multiboot_u64 framebuffer_addr;
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multiboot_u32 framebuffer_pitch;
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multiboot_u32 framebuffer_width;
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multiboot_u32 framebuffer_height;
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multiboot_u8 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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multiboot_u8 framebuffer_type;
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union {
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struct {
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multiboot_u32 framebuffer_palette_addr;
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multiboot_u16 framebuffer_palette_num_colors;
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};
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struct {
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multiboot_u8 framebuffer_red_field_position;
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multiboot_u8 framebuffer_red_mask_size;
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multiboot_u8 framebuffer_green_field_position;
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multiboot_u8 framebuffer_green_mask_size;
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multiboot_u8 framebuffer_blue_field_position;
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multiboot_u8 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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multiboot_u8 red;
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multiboot_u8 green;
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multiboot_u8 blue;
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};
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struct multiboot_mmap_entry {
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multiboot_u32 size;
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multiboot_u64 addr;
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multiboot_u64 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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multiboot_u32 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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/* the memory used goes from bytes ’mod_start’ to ’mod_end-1’ inclusive
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*/
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multiboot_u32 mod_start;
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multiboot_u32 mod_end;
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/* Module command line */
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multiboot_u32 cmdline;
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/* padding to take it to 16 bytes (must be zero) */
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multiboot_u32 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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multiboot_u16 version;
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multiboot_u16 cseg;
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multiboot_u32 offset;
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multiboot_u16 cseg_16;
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multiboot_u16 dseg;
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multiboot_u16 flags;
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multiboot_u16 cseg_len;
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multiboot_u16 cseg_16_len;
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multiboot_u16 dseg_len;
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};
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#endif /* ! ASM_FILE */
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#include "types.h"
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#include <stdint.h>
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void init_multiboot(multiboot_info_t *mbd, u32 magic);
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