#pragma once

#include <stddef.h>
#include <vector.h>

typedef struct {
  uint32_t magic;
  uint32_t totalsize;
  uint32_t off_dt_struct;
  uint32_t off_dt_strings;
  uint32_t off_mem_rsvmap;
  uint32_t version;
  uint32_t last_comp_version;
  uint32_t boot_cpuid_phys;
  uint32_t size_dt_strings;
  uint32_t size_dt_struct;
}__attribute__((packed)) fdt_header_t;

typedef struct {
  uint64_t address;
  uint64_t size;
}__attribute__((packed)) fdt_reserve_entry_t;

typedef struct {
  uint32_t len;
  uint32_t nameoff;
}__attribute__((packed)) fdt_prop_header_t;

typedef struct {
  uint32_t len;
  const char *name;
  void *value;
} fdt_prop_t;

#define FDT_BEGIN_NODE 0x00000001
#define FDT_END_NODE   0x00000002
#define FDT_PROP       0x00000003
#define FDT_NOP        0x00000004
#define FDT_END        0x00000009

#define FDT_PATH_BUFFER_LEN 0x10

typedef void (*fdt_callback_func_t)(const vector_t *);
typedef struct {
  const char *name;
  const fdt_callback_func_t func;
} fdt_callback_t;

void fdt_traverse(const vector_t *struct_cbs);

extern void *dtb_start;
extern void *dtb_end;
extern void *dtb_memory_start;
extern void *dtb_memory_end;
extern vector_t *dtb_reserved_entries;