#pragma once

#define MBOOT2_MAGIC 0xE85250D6
#define MBOOT2_REPLY 0x36D76289
#define MBOOT2_ARCH 0
#define MBOOT2_LENGTH (Multiboot2HeaderEnd - Multiboot2Header)
#define MBOOT2_CHECKSUM -(MBOOT2_MAGIC + MBOOT2_ARCH + MBOOT2_LENGTH)

#define MBOOT2_TAG_CMDLINE 1
#define MBOOT2_TAG_BOOTLOADER 2
#define MBOOT2_TAG_MMAP 6
#define MBOOT2_TAG_FBINFO 8
#define MBOOT2_TAG_OLD_RSDP 14
#define MBOOT2_TAG_NEW_RSDP 15

#ifndef __ASSEMBLER__
#include <stddef.h>
#include <stdint.h>

struct fbinfo {
    uint64_t framebuffer_addr;
    uint32_t framebuffer_pitch;
    uint32_t framebuffer_width;
    uint32_t framebuffer_height;
    uint8_t framebuffer_bpp;
    uint8_t framebuffer_type;
    uint8_t reserved;
    uint8_t color_info[];
}__attribute__((packed));

struct kernel_boot_data_st{
    int multiboot_version;
    void *mboot_tags;
    size_t tags_length;
    char *bootloader;
    char *commandline;
    size_t mmap_size;
    unsigned int mmap_len;
    void *mmap;
    struct fbinfo *fbinfo;
    void *rsdp;
};

#define MMAP_FREE 1

// boot/kmain.c
extern struct kernel_boot_data_st kernel_boot_data;

// boot/multiboot.c
int multiboot_init(uint64_t magic, void *mboot_info);
int multiboot_get_memory_area(size_t index, uintptr_t *start, uintptr_t *end, uint32_t *type);
int multiboot_page_used(uintptr_t page);
#endif