hazel/include/kernel/multiboot.h

#ifndef HAZEL_MULTIBOOT_H_
#define HAZEL_MULTIBOOT_H_

#include <stdint.h>

typedef struct {
    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;
} multiboot_info_t; 

struct multiboot_mmap_entry
{
  uint32_t size;
  uint64_t addr;
  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
  uint32_t type;
} __attribute__((packed));
typedef struct multiboot_mmap_entry multi_mmap_t;

struct multiboot_mod_list
{
  /* the memory used goes from bytes ’mod_start’ to ’mod_end-1’ inclusive */
  uint32_t mod_start;
  uint32_t mod_end;

  /* Module command line */
  uint32_t cmdline;

  /* padding to take it to 16 bytes (must be zero) */
  uint32_t pad;
};
typedef struct multiboot_mod_list multi_mod_t;


#endif