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#ifndef I386_MULTIBOOT_H
#define I386_MULTIBOOT_H
#include <stdint.h>
#define MBOOT_HEADER_MAGIC 0x1BADB002
#define MBOOT_LOADER_MAGIC 0x2BADB002
// Multiboot flags
#define MBOOT_INFO_MMAP 0x00000001
#define MBOOT_INFO_BOOTDEV 0x00000002
#define MBOOT_INFO_CMDLINE 0x00000004
#define MBOOT_INFO_MODS 0x00000008
#define MBOOT_INFO_AOUT_SYMS 0x00000010
#define MBOOT_INFO_ELF_HEADER 0x00000020
#define MBOOT_INFO_MEM_MAP 0x00000040
#define MBOOT_INFO_DRIVE_INFO 0x00000080
#define MBOOT_INFO_CONFIG_TBL 0x00000100
#define MBOOT_INFO_BL_NAME 0x00000200
#define MBOOT_INFO_APM_TBL 0x00000400
#define MBOOT_INFO_VBE 0x00000800
#define MBOOT_INFO_FRAMEBUFFER 0x00001000
// Memory types
#define MBOOT_MEM_AVAILABLE 1
#define MBOOT_MEM_RESERVED 2
#define MBOOT_MEM_ACPI_REC 3
#define MBOOT_MEM_NVS 4
#define MBOOT_MEM_BADRAM 5
struct aout_symbol_table {
uint32_t tabsize;
uint32_t strsize;
uint32_t addr;
uint32_t reserved;
};
struct elf_section_header {
uint32_t num;
uint32_t size;
uint32_t addr;
uint32_t shndx;
};
struct mboot_header {
uint32_t magic;
uint32_t flags;
uint32_t checksum;
uint32_t header_addr;
uint32_t load_addr;
uint32_t load_end_addr;
uint32_t bss_end_addr;
uint32_t entry_addr;
uint32_t mode_type;
uint32_t width;
uint32_t height;
uint32_t depth;
};
struct mboot_info {
uint32_t flags;
uint32_t mem_lower;
uint32_t mem_upper;
uint32_t boot_device;
uint32_t cmdline;
uint32_t mods_count;
uint32_t mods_addr;
union {
struct aout_symbol_table aout_sym;
struct elf_section_header elf_sec;
} u;
uint32_t mmap_length;
uint32_t mmap_addr;
uint32_t drives_length;
uint32_t drives_addr;
uint32_t config_table;
uint32_t boot_loader_name;
uint32_t apm_table;
uint32_t vbe_control_info;
uint32_t vbe_mode_info;
uint16_t vbe_mode;
uint16_t vbe_interface_seg;
uint16_t vbe_interface_off;
uint16_t vbe_interface_len;
uint64_t framebuffer_addr;
uint32_t framebuffer_pitch;
uint32_t framebuffer_width;
uint32_t framebuffer_height;
uint8_t framebuffer_bpp;
uint8_t framebuffer_type;
};
struct mboot_mmap_entry {
uint32_t size;
uint32_t addr_low;
uint32_t addr_high;
uint32_t len_low;
uint32_t len_high;
uint32_t type;
} __attribute__((packed));
void i386_entry(uint32_t mboot_magic, struct mboot_info *header);
#endif
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