kernel/src/boot/tag.h


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#pragma once 

#include <stdbool.h>
#include <stdint.h>

#include "acpi/acpi.h"
#include "memory/memory.h"

#define CMDLINE_MAX 32

struct BootTag {
    uint8_t valid;
    uint32_t type;
    uint32_t size;
    union {
        char cmdline[CMDLINE_MAX];
        struct MemoryMap *memory_map;
        struct RootSystemDescriptionPointer *rsdp;
    } data;
};

struct BootInfo {
    uint32_t total_size;
    uint32_t reserved;
    struct BootTag tags[21];
};

enum BootTagID {
    ID_CMDLINE = 0,
    iD_MEMORYMAP = 6,
    ID_RSDP = 14
};

void load_boot_info(void* boot_info);
bool get_boot_tag(enum BootTagID id, struct BootTag **tag);