#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1

/* How many bytes from the start of the file we search for the header.  */
#define MULTIBOOT_SEARCH			32768
#define MULTIBOOT_HEADER_ALIGN			8

/* The magic field should contain this.  */
#define MULTIBOOT2_HEADER_MAGIC			0xe85250d6

/* This should be in %eax.  */
#define MULTIBOOT2_BOOTLOADER_MAGIC		0x36d76289

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

/* Alignment of the multiboot info structure.  */
#define MULTIBOOT_INFO_ALIGN			0x00000008

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

#define MULTIBOOT_TAG_ALIGN                  8
#define MULTIBOOT_TAG_TYPE_END               0
#define MULTIBOOT_TAG_TYPE_CMDLINE           1
#define MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME  2
#define MULTIBOOT_TAG_TYPE_MODULE            3
#define MULTIBOOT_TAG_TYPE_BASIC_MEMINFO     4
#define MULTIBOOT_TAG_TYPE_BOOTDEV           5
#define MULTIBOOT_TAG_TYPE_MMAP              6
#define MULTIBOOT_TAG_TYPE_VBE               7
#define MULTIBOOT_TAG_TYPE_FRAMEBUFFER       8
#define MULTIBOOT_TAG_TYPE_ELF_SECTIONS      9
#define MULTIBOOT_TAG_TYPE_APM               10
#define MULTIBOOT_TAG_TYPE_EFI32             11
#define MULTIBOOT_TAG_TYPE_EFI64             12
#define MULTIBOOT_TAG_TYPE_SMBIOS            13
#define MULTIBOOT_TAG_TYPE_ACPI_OLD          14
#define MULTIBOOT_TAG_TYPE_ACPI_NEW          15
#define MULTIBOOT_TAG_TYPE_NETWORK           16
#define MULTIBOOT_TAG_TYPE_EFI_MMAP          17
#define MULTIBOOT_TAG_TYPE_EFI_BS            18
#define MULTIBOOT_TAG_TYPE_EFI32_IH          19
#define MULTIBOOT_TAG_TYPE_EFI64_IH          20
#define MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR    21

#define MULTIBOOT_HEADER_TAG_END                          0
#define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST          1
#define MULTIBOOT_HEADER_TAG_ADDRESS                      2
#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS                3
#define MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS                4
#define MULTIBOOT_HEADER_TAG_FRAMEBUFFER                  5
#define MULTIBOOT_HEADER_TAG_MODULE_ALIGN                 6
#define MULTIBOOT_HEADER_TAG_EFI_BS                       7
#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64          9
#define MULTIBOOT_HEADER_TAG_RELOCATABLE                  10

#define MULTIBOOT_ARCHITECTURE_I386                       0
#define MULTIBOOT_ARCHITECTURE_MIPS32                     4
#define MULTIBOOT_HEADER_TAG_OPTIONAL                     1

#define MULTIBOOT_LOAD_PREFERENCE_NONE                    0
#define MULTIBOOT_LOAD_PREFERENCE_LOW                     1
#define MULTIBOOT_LOAD_PREFERENCE_HIGH                    2

#define MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED          1
#define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED        2

#define MULTIBOOT_MEMORY_TYPE_AVAILABLE                   1
#define MULTIBOOT_MEMORY_TYPE_RESERVED                    2
#define MULTIBOOT_MEMORY_TYPE_ACPI_RECLAIMABLE            3
#define MULTIBOOT_MEMORY_TYPE_ACPI_NON_VOLATILE_STORAGE   4
#define MULTIBOOT_MEMORY_TYPE_BAD_MEMORY                  5

#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;

  /* ISA */
  multiboot_uint32_t architecture;

  /* Total header length.  */
  multiboot_uint32_t header_length;

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

struct multiboot_header_tag
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
};

struct multiboot_header_tag_information_request
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t requests[0];
};

struct multiboot_header_tag_address
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t header_addr;
  multiboot_uint32_t load_addr;
  multiboot_uint32_t load_end_addr;
  multiboot_uint32_t bss_end_addr;
};

struct multiboot_header_tag_entry_address
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t entry_addr;
};

struct multiboot_header_tag_console_flags
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t console_flags;
};

struct multiboot_header_tag_framebuffer
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t width;
  multiboot_uint32_t height;
  multiboot_uint32_t depth;
};

struct multiboot_header_tag_module_align
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
};

struct multiboot_header_tag_relocatable
{
  multiboot_uint16_t type;
  multiboot_uint16_t flags;
  multiboot_uint32_t size;
  multiboot_uint32_t min_addr;
  multiboot_uint32_t max_addr;
  multiboot_uint32_t align;
  multiboot_uint32_t preference;
};

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


struct multiboot_mmap_entry
{
  multiboot_uint32_t base_addr_low;
  multiboot_uint32_t base_addr_high;
  multiboot_uint32_t length_low;
  multiboot_uint32_t length_high;
  multiboot_uint32_t type;
  multiboot_uint32_t zero;
};
typedef struct multiboot_mmap_entry multiboot_memory_map_t;

struct multiboot_tag
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
};

struct multiboot_tag_string
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  char string[0];
};

struct multiboot_tag_module
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
	multiboot_uint32_t mod_start;
	multiboot_uint32_t mod_end;
  char cmdline[0];
};

struct multiboot_tag_basic_meminfo
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t mem_lower;
  multiboot_uint32_t mem_upper;
};

struct multiboot_tag_bootdev
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t biosdev;
  multiboot_uint32_t slice;
  multiboot_uint32_t part;
};

struct multiboot_tag_mmap
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t entry_size;
  multiboot_uint32_t entry_version;
  struct multiboot_mmap_entry entries[0];  
};

struct multiboot_vbe_info_block
{
  multiboot_uint8_t external_specification[512];
};

struct multiboot_vbe_mode_info_block
{
  multiboot_uint8_t external_specification[256];
};

struct multiboot_tag_vbe
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;

  multiboot_uint16_t vbe_mode;
  multiboot_uint16_t vbe_interface_seg;
  multiboot_uint16_t vbe_interface_off;
  multiboot_uint16_t vbe_interface_len;

  struct multiboot_vbe_info_block vbe_control_info;
  struct multiboot_vbe_mode_info_block vbe_mode_info;
};

struct multiboot_tag_framebuffer_common
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;

  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;
  multiboot_uint16_t reserved;
};

struct multiboot_tag_framebuffer
{
  struct multiboot_tag_framebuffer_common common;

  union
  {
    struct
    {
      multiboot_uint16_t framebuffer_palette_num_colors;
      struct multiboot_color framebuffer_palette[0];
    };
    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;
    };
  };
};

struct multiboot_tag_elf_sections
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t num;
  multiboot_uint32_t entsize;
  multiboot_uint32_t shndx;
  char sections[0];
};

struct multiboot_tag_apm
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  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;
};

struct multiboot_tag_efi32
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t pointer;
};

struct multiboot_tag_efi64
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint64_t pointer;
};

struct multiboot_tag_smbios
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint8_t major;
  multiboot_uint8_t minor;
  multiboot_uint8_t reserved[6];
  multiboot_uint8_t tables[0];
};

struct multiboot_tag_old_acpi
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint8_t rsdp[0];
};

struct multiboot_tag_new_acpi
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint8_t rsdp[0];
};

struct multiboot_tag_network
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint8_t dhcpack[0];
};

struct multiboot_tag_efi_mmap
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t descr_size;
  multiboot_uint32_t descr_vers;
  multiboot_uint8_t efi_mmap[0];
}; 

struct multiboot_tag_efi32_ih
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t pointer;
};

struct multiboot_tag_efi64_ih
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint64_t pointer;
};

struct multiboot_tag_load_base_addr
{
  multiboot_uint32_t type;
  multiboot_uint32_t size;
  multiboot_uint32_t load_base_addr;
};

#endif /* ! ASM_FILE */

#endif /* ! MULTIBOOT_HEADER */
