os-k/kaleid/include/multiboot/multiboot.h

//----------------------------------------------------------------------------//
//                           GNU GPL OS/K                                     //
//                                                                            //
//  Desc:   multiboot.h - Multiboot header file.                              //
//                                                                            //
//                                                                            //
//  Copyright © 1999,2003,2007-2010  Free Software Foundation, Inc.           //
//  Copyright © 2018-2019 The OS/K Team                                       //
//                                                                            //
//  This file is part of OS/K.                                                //
//                                                                            //
//  OS/K is free software: you can redistribute it and/or modify              //
//  it under the terms of the GNU General Public License as published by      //
//  the Free Software Foundation, either version 3 of the License, or         //
//  any later version.                                                        //
//                                                                            //
//  OS/K is distributed in the hope that it will be useful,                   //
//  but WITHOUT ANY WARRANTY//without even the implied warranty of            //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
//  GNU General Public License for more details.                              //
//                                                                            //
//  You should have received a copy of the GNU General Public License         //
//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
//----------------------------------------------------------------------------//

#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1

/* How many bytes from the start of the file we search for the header.  */
#define MULTIBOOT_SEARCH                    8192
#define MULTIBOOT_HEADER_ALIGN              4

/* The magic field should contain this.  */
#define MULTIBOOT_HEADER_MAGIC              0x1BADB002

/* This should be in %eax.  */
#define MULTIBOOT_BOOTLOADER_MAGIC          0x2BADB002

/* Alignment of multiboot modules.  */
#define MULTIBOOT_MOD_ALIGN                 0x00001000

/* Alignment of the multiboot info structure.  */
#define MULTIBOOT_INFO_ALIGN                0x00000004

/* Flags set in the 'flags' member of the multiboot header.  */

/* Align all boot modules on i386 page (4KB) boundaries.  */
#define MULTIBOOT_PAGE_ALIGN                0x00000001

/* Must pass memory information to OS.  */
#define MULTIBOOT_MEMORY_INFO               0x00000002

/* Must pass video information to OS.  */
#define MULTIBOOT_VIDEO_MODE                0x00000004

/* This flag indicates the use of the address fields in the header.  */
#define MULTIBOOT_AOUT_KLUDGE               0x00010000


#define MULTIBOOT_INFO_MEMORY               0x00000001
/* is there a boot device set? */
#define MULTIBOOT_INFO_BOOTDEV              0x00000002
/* is the command-line defined? */
#define MULTIBOOT_INFO_CMDLINE              0x00000004
/* are there modules to do something with? */
#define MULTIBOOT_INFO_MODS                 0x00000008

/* These next two are mutually exclusive */

/* is there a symbol table loaded? */
#define MULTIBOOT_INFO_AOUT_SYMS            0x00000010
/* is there an ELF section header table? */
#define MULTIBOOT_INFO_ELF_SHDR             0x00000020

/* is there a full memory map? */
#define MULTIBOOT_INFO_MEM_MAP              0x00000040

/* Is there drive info?  */
#define MULTIBOOT_INFO_DRIVE_INFO           0x00000080

/* Is there a config table?  */
#define MULTIBOOT_INFO_CONFIG_TABLE         0x00000100

/* Is there a boot loader name?  */
#define MULTIBOOT_INFO_BOOT_LOADER_NAME     0x00000200

/* Is there a APM table?  */
#define MULTIBOOT_INFO_APM_TABLE            0x00000400

/* Is there video information?  */
#define MULTIBOOT_INFO_VBE_INFO             0x00000800
#define MULTIBOOT_INFO_FRAMEBUFFER_INFO     0x00001000

#ifndef ASM_FILE

typedef unsigned char multiboot_uint8_t;
typedef unsigned short multiboot_uint16_t;
typedef unsigned int multiboot_uint32_t;
typedef unsigned long long multiboot_uint64_t;

struct multiboot_header
{
  /* Must be MULTIBOOT_MAGIC - see above.  */
  multiboot_uint32_t magic;

  /* Feature flags.  */
  multiboot_uint32_t flags;

  /* The above fields plus this one must equal 0 mod 2^32. */
  multiboot_uint32_t checksum;

  /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set.  */
  multiboot_uint32_t header_addr;
  multiboot_uint32_t load_addr;
  multiboot_uint32_t load_end_addr;
  multiboot_uint32_t bss_end_addr;
  multiboot_uint32_t entry_addr;

  /* These are only valid if MULTIBOOT_VIDEO_MODE is set.  */
  multiboot_uint32_t mode_type;
  multiboot_uint32_t width;
  multiboot_uint32_t height;
  multiboot_uint32_t depth;
};

/* The symbol table for a.out.  */
struct multiboot_aout_symbol_table
{
  multiboot_uint32_t tabsize;
  multiboot_uint32_t strsize;
  multiboot_uint32_t addr;
  multiboot_uint32_t reserved;
};
typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;

/* The section header table for ELF.  */
struct multiboot_elf_section_header_table
{
  multiboot_uint32_t num;
  multiboot_uint32_t size;
  multiboot_uint32_t addr;
  multiboot_uint32_t shndx;
};
typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;

struct multiboot_info
{
  /* Multiboot info version number */
  multiboot_uint32_t flags;

  /* Available memory from BIOS */
  multiboot_uint32_t mem_lower;
  multiboot_uint32_t mem_upper;

  /* "root" partition */
  multiboot_uint32_t boot_device;

  /* Kernel command line */
  multiboot_uint32_t cmdline;

  /* Boot-Module list */
  multiboot_uint32_t mods_count;
  multiboot_uint32_t mods_addr;

  union
  {
    multiboot_aout_symbol_table_t aout_sym;
    multiboot_elf_section_header_table_t elf_sec;
  } u;

  /* Memory Mapping buffer */
  multiboot_uint32_t mmap_length;
  multiboot_uint32_t mmap_addr;

  /* Drive Info buffer */
  multiboot_uint32_t drives_length;
  multiboot_uint32_t drives_addr;

  /* ROM configuration table */
  multiboot_uint32_t config_table;

  /* Boot Loader Name */
  multiboot_uint32_t boot_loader_name;

  /* APM table */
  multiboot_uint32_t apm_table;

  /* Video */
  multiboot_uint32_t vbe_control_info;
  multiboot_uint32_t vbe_mode_info;
  multiboot_uint16_t vbe_mode;
  multiboot_uint16_t vbe_interface_seg;
  multiboot_uint16_t vbe_interface_off;
  multiboot_uint16_t vbe_interface_len;

  multiboot_uint64_t framebuffer_addr;
  multiboot_uint32_t framebuffer_pitch;
  multiboot_uint32_t framebuffer_width;
  multiboot_uint32_t framebuffer_height;
  multiboot_uint8_t framebuffer_bpp;
#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB     1
#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT    2
  multiboot_uint8_t framebuffer_type;
  union
  {
    struct
    {
      multiboot_uint32_t framebuffer_palette_addr;
      multiboot_uint16_t framebuffer_palette_num_colors;
    };
    struct
    {
      multiboot_uint8_t framebuffer_red_field_position;
      multiboot_uint8_t framebuffer_red_mask_size;
      multiboot_uint8_t framebuffer_green_field_position;
      multiboot_uint8_t framebuffer_green_mask_size;
      multiboot_uint8_t framebuffer_blue_field_position;
      multiboot_uint8_t framebuffer_blue_mask_size;
    };
  };
};
typedef struct multiboot_info multiboot_info_t;

struct multiboot_color
{
  multiboot_uint8_t red;
  multiboot_uint8_t green;
  multiboot_uint8_t blue;
};

struct multiboot_mmap_entry
{
  multiboot_uint32_t size;
  multiboot_uint64_t addr;
  multiboot_uint64_t len;
#define MULTIBOOT_MEMORY_AVAILABLE        1
#define MULTIBOOT_MEMORY_RESERVED        2
#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE       3
#define MULTIBOOT_MEMORY_NVS                    4
#define MULTIBOOT_MEMORY_BADRAM                 5
  multiboot_uint32_t type;
} __attribute__((packed));
typedef struct multiboot_mmap_entry multiboot_memory_map_t;

struct multiboot_mod_list
{
  /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
  multiboot_uint32_t mod_start;
  multiboot_uint32_t mod_end;

  /* Module command line */
  multiboot_uint32_t cmdline;

  /* padding to take it to 16 bytes (must be zero) */
  multiboot_uint32_t pad;
};
typedef struct multiboot_mod_list multiboot_module_t;

/* APM BIOS info.  */
struct multiboot_apm_info
{
  multiboot_uint16_t version;
  multiboot_uint16_t cseg;
  multiboot_uint32_t offset;
  multiboot_uint16_t cseg_16;
  multiboot_uint16_t dseg;
  multiboot_uint16_t flags;
  multiboot_uint16_t cseg_len;
  multiboot_uint16_t cseg_16_len;
  multiboot_uint16_t dseg_len;
};

#endif /* ! ASM_FILE */

#endif /* ! MULTIBOOT_HEADER */