rk/include/kernel/multiboot.h

#ifndef RK_MULTIBOOT_H_
#define RK_MULTIBOOT_H_

#include <stdint.h>

#define MULTIBOOT_MAGIC 0x2BADB002

struct multiboot_info {
    uint32_t flags;			//required
    uint32_t memLower;		//if bit 0 in flags are set
    uint32_t memUpper;		//if bit 0 in flags are set
    uint32_t bootDevice;		//if bit 1 in flags are set
    uint32_t commandLine;		//if bit 2 in flags are set
    uint32_t moduleCount;		//if bit 3 in flags are set
    uint32_t moduleAddress;		//if bit 3 in flags are set
    uint32_t syms[4];		//if bits 4 or 5 in flags are set
    uint32_t memMapLength;		//if bit 6 in flags is set
    uint32_t memMapAddress;		//if bit 6 in flags is set
    uint32_t drivesLength;		//if bit 7 in flags is set
    uint32_t drivesAddress;		//if bit 7 in flags is set
    uint32_t configTable;		//if bit 8 in flags is set
    uint32_t apmTable;		//if bit 9 in flags is set
    uint32_t vbeControlInfo;	//if bit 10 in flags is set
    uint32_t vbeModeInfo;		//if bit 11 in flags is set
    uint32_t vbeMode;		// all vbe_* set if bit 12 in flags are set
    uint32_t vbeInterfaceSeg;
    uint32_t vbeInterfaceOff;
    uint32_t vbeInterfaceLength;
}; 

struct multiboot_mmap_entry
{
    uint32_t size;
    uint32_t addr_low;
    uint32_t addr_high;
    uint32_t len_low;
    uint32_t len_high;
#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
    uint32_t type;
} __attribute__((packed));

#endif