kernel/arch/multiboot.h

#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1

void print_multiboot_info(unsigned long addr);

/*
 * 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_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_ARCHITECTURE_I386  0
#define MULTIBOOT_ARCHITECTURE_MIPS32  4
#define MULTIBOOT_HEADER_TAG_OPTIONAL 1
#define MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED 1
#define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED 2
#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;
    multiboot_uint32_t width;
    multiboot_uint32_t height;
    multiboot_uint32_t depth;
};
struct multiboot_color
{
    multiboot_uint8_t red;
    multiboot_uint8_t green;
    multiboot_uint8_t blue;
};
struct multiboot_mmap_entry
{
    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
    multiboot_uint32_t type;
    multiboot_uint32_t zero;
} __attribute__((packed));
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;
};

#endif

#endif