libkernaux/examples/kernel-stivale2-limine/stivale2.h

#ifndef __STIVALE__STIVALE2_H__
#define __STIVALE__STIVALE2_H__

#include <stdint.h>

#if (defined (_STIVALE2_SPLIT_64) && defined (__i386__)) || defined(_STIVALE2_SPLIT_64_FORCE)

#define _stivale2_split64(NAME) \
    union {                    \
        uint32_t NAME;         \
        uint32_t NAME##_lo;    \
    };                         \
    uint32_t NAME##_hi

#else

#define _stivale2_split64(NAME) \
    uint64_t NAME

#endif

#define STIVALE2_BOOTLOADER_BRAND_SIZE   64
#define STIVALE2_BOOTLOADER_VERSION_SIZE 64
#define STIVALE2_MODULE_STRING_SIZE      128

#define STIVALE2_HEADER_TAG_ANY_VIDEO_ID   0xc75c9fa92a44c4db
#define STIVALE2_HEADER_TAG_FRAMEBUFFER_ID 0x3ecc1bc43d0f7971
#define STIVALE2_HEADER_TAG_FB_MTRR_ID     0x4c7bb07731282e00
#define STIVALE2_HEADER_TAG_SLIDE_HHDM_ID  0xdc29269c2af53d1d
#define STIVALE2_HEADER_TAG_TERMINAL_ID    0xa85d499b1823be72
#define STIVALE2_HEADER_TAG_SMP_ID         0x1ab015085f3273df
#define STIVALE2_HEADER_TAG_5LV_PAGING_ID  0x932f477032007e8f
#define STIVALE2_HEADER_TAG_UNMAP_NULL_ID  0x92919432b16fe7e7

#define STIVALE2_STRUCT_TAG_PMRS_ID                0x5df266a64047b6bd
#define STIVALE2_STRUCT_TAG_KERNEL_BASE_ADDRESS_ID 0x060d78874a2a8af0
#define STIVALE2_STRUCT_TAG_CMDLINE_ID             0xe5e76a1b4597a781
#define STIVALE2_STRUCT_TAG_MEMMAP_ID              0x2187f79e8612de07
#define STIVALE2_STRUCT_TAG_FRAMEBUFFER_ID         0x506461d2950408fa
#define STIVALE2_STRUCT_TAG_EDID_ID                0x968609d7af96b845
#define STIVALE2_STRUCT_TAG_TEXTMODE_ID            0x38d74c23e0dca893
#define STIVALE2_STRUCT_TAG_FB_MTRR_ID             0x6bc1a78ebe871172
#define STIVALE2_STRUCT_TAG_TERMINAL_ID            0xc2b3f4c3233b0974
#define STIVALE2_STRUCT_TAG_MODULES_ID             0x4b6fe466aade04ce
#define STIVALE2_STRUCT_TAG_RSDP_ID                0x9e1786930a375e78
#define STIVALE2_STRUCT_TAG_EPOCH_ID               0x566a7bed888e1407
#define STIVALE2_STRUCT_TAG_FIRMWARE_ID            0x359d837855e3858c
#define STIVALE2_STRUCT_TAG_EFI_SYSTEM_TABLE_ID    0x4bc5ec15845b558e
#define STIVALE2_STRUCT_TAG_KERNEL_FILE_ID         0xe599d90c2975584a
#define STIVALE2_STRUCT_TAG_KERNEL_FILE_V2_ID      0x37c13018a02c6ea2
#define STIVALE2_STRUCT_TAG_BOOT_VOLUME_ID         0x9b4358364c19ee62
#define STIVALE2_STRUCT_TAG_KERNEL_SLIDE_ID        0xee80847d01506c57
#define STIVALE2_STRUCT_TAG_SMBIOS_ID              0x274bd246c62bf7d1
#define STIVALE2_STRUCT_TAG_SMP_ID                 0x34d1d96339647025
#define STIVALE2_STRUCT_TAG_PXE_SERVER_INFO        0x29d1e96239247032
#define STIVALE2_STRUCT_TAG_MMIO32_UART            0xb813f9b8dbc78797
#define STIVALE2_STRUCT_TAG_DTB                    0xabb29bd49a2833fa
#define STIVALE2_STRUCT_TAG_HHDM_ID                0xb0ed257db18cb58f

#define STIVALE2_TERM_CB_DEC           10
#define STIVALE2_TERM_CB_BELL          20
#define STIVALE2_TERM_CB_PRIVATE_ID    30
#define STIVALE2_TERM_CB_STATUS_REPORT 40
#define STIVALE2_TERM_CB_POS_REPORT    50
#define STIVALE2_TERM_CB_KBD_LEDS      60
#define STIVALE2_TERM_CB_MODE          70
#define STIVALE2_TERM_CB_LINUX         80

#define STIVALE2_TERM_CTX_SIZE     ((uint64_t)(-1))
#define STIVALE2_TERM_CTX_SAVE     ((uint64_t)(-2))
#define STIVALE2_TERM_CTX_RESTORE  ((uint64_t)(-3))
#define STIVALE2_TERM_FULL_REFRESH ((uint64_t)(-4))

#define STIVALE2_PMR_EXECUTABLE ((uint64_t)1 << 0)
#define STIVALE2_PMR_WRITABLE   ((uint64_t)1 << 1)
#define STIVALE2_PMR_READABLE   ((uint64_t)1 << 2)

#define STIVALE2_MMAP_USABLE                 1
#define STIVALE2_MMAP_RESERVED               2
#define STIVALE2_MMAP_ACPI_RECLAIMABLE       3
#define STIVALE2_MMAP_ACPI_NVS               4
#define STIVALE2_MMAP_BAD_MEMORY             5
#define STIVALE2_MMAP_BOOTLOADER_RECLAIMABLE 0x1000
#define STIVALE2_MMAP_KERNEL_AND_MODULES     0x1001
#define STIVALE2_MMAP_FRAMEBUFFER            0x1002

#define STIVALE2_FBUF_MMODEL_RGB 1

#define STIVALE2_FIRMWARE_BIOS (1 << 0)

// Anchor for non ELF kernels
struct stivale2_anchor {
    uint8_t anchor[15];
    uint8_t bits;
    _stivale2_split64(phys_load_addr);
    _stivale2_split64(phys_bss_start);
    _stivale2_split64(phys_bss_end);
    _stivale2_split64(phys_stivale2hdr);
};

struct stivale2_tag {
    uint64_t identifier;
    _stivale2_split64(next);
};

/* --- Header --------------------------------------------------------------- */
/*  Information passed from the kernel to the bootloader                      */

struct stivale2_header {
    _stivale2_split64(entry_point);
    _stivale2_split64(stack);
    uint64_t flags;
    _stivale2_split64(tags);
};

struct stivale2_header_tag_any_video {
    struct stivale2_tag tag;
    uint64_t preference;
};

struct stivale2_header_tag_framebuffer {
    struct stivale2_tag tag;
    uint16_t framebuffer_width;
    uint16_t framebuffer_height;
    uint16_t framebuffer_bpp;
    uint16_t unused;
};

struct stivale2_header_tag_slide_hhdm {
    struct stivale2_tag tag;
    uint64_t flags;
    _stivale2_split64(alignment);
};

struct stivale2_header_tag_terminal {
    struct stivale2_tag tag;
    uint64_t flags;
    _stivale2_split64(callback);
};

struct stivale2_header_tag_smp {
    struct stivale2_tag tag;
    uint64_t flags;
};

/* --- Struct --------------------------------------------------------------- */
/*  Information passed from the bootloader to the kernel                      */

struct stivale2_struct {
    char bootloader_brand[STIVALE2_BOOTLOADER_BRAND_SIZE];
    char bootloader_version[STIVALE2_BOOTLOADER_VERSION_SIZE];

    uint64_t tags;
};

struct stivale2_pmr {
    uint64_t base;
    uint64_t length;
    uint64_t permissions;
};

struct stivale2_struct_tag_pmrs {
    struct stivale2_tag tag;
    uint64_t entries;
    struct stivale2_pmr pmrs[];
};

struct stivale2_struct_tag_kernel_base_address {
    struct stivale2_tag tag;
    uint64_t physical_base_address;
    uint64_t virtual_base_address;
};

struct stivale2_struct_tag_cmdline {
    struct stivale2_tag tag;
    uint64_t cmdline;
};

struct stivale2_mmap_entry {
    uint64_t base;
    uint64_t length;
    uint32_t type;
    uint32_t unused;
};

struct stivale2_struct_tag_memmap {
    struct stivale2_tag tag;
    uint64_t entries;
    struct stivale2_mmap_entry memmap[];
};

struct stivale2_struct_tag_framebuffer {
    struct stivale2_tag tag;
    uint64_t framebuffer_addr;
    uint16_t framebuffer_width;
    uint16_t framebuffer_height;
    uint16_t framebuffer_pitch;
    uint16_t framebuffer_bpp;
    uint8_t  memory_model;
    uint8_t  red_mask_size;
    uint8_t  red_mask_shift;
    uint8_t  green_mask_size;
    uint8_t  green_mask_shift;
    uint8_t  blue_mask_size;
    uint8_t  blue_mask_shift;
    uint8_t  unused;
};

struct stivale2_struct_tag_edid {
    struct stivale2_tag tag;
    uint64_t edid_size;
    uint8_t  edid_information[];
};

struct stivale2_struct_tag_textmode {
    struct stivale2_tag tag;
    uint64_t address;
    uint16_t unused;
    uint16_t rows;
    uint16_t cols;
    uint16_t bytes_per_char;
};

struct stivale2_struct_tag_terminal {
    struct stivale2_tag tag;
    uint32_t flags;
    uint16_t cols;
    uint16_t rows;
    uint64_t term_write;
    uint64_t max_length;
};

struct stivale2_module {
    uint64_t begin;
    uint64_t end;

    char string[STIVALE2_MODULE_STRING_SIZE];
};

struct stivale2_struct_tag_modules {
    struct stivale2_tag tag;
    uint64_t module_count;
    struct stivale2_module modules[];
};

struct stivale2_struct_tag_rsdp {
    struct stivale2_tag tag;
    uint64_t rsdp;
};

struct stivale2_struct_tag_epoch {
    struct stivale2_tag tag;
    uint64_t epoch;
};

struct stivale2_struct_tag_firmware {
    struct stivale2_tag tag;
    uint64_t flags;
};

struct stivale2_struct_tag_efi_system_table {
    struct stivale2_tag tag;
    uint64_t system_table;
};

struct stivale2_struct_tag_kernel_file {
    struct stivale2_tag tag;
    uint64_t kernel_file;
};

struct stivale2_struct_tag_kernel_file_v2 {
    struct stivale2_tag tag;
    uint64_t kernel_file;
    uint64_t kernel_size;
};

struct stivale2_guid {
    uint32_t a;
    uint16_t b;
    uint16_t c;
    uint8_t  d[8];
};

struct stivale2_struct_tag_boot_volume {
    struct stivale2_tag tag;
    uint64_t flags;
    struct stivale2_guid guid;
    struct stivale2_guid part_guid;
};

struct stivale2_struct_tag_kernel_slide {
    struct stivale2_tag tag;
    uint64_t kernel_slide;
};

struct stivale2_struct_tag_smbios {
    struct stivale2_tag tag;
    uint64_t flags;
    uint64_t smbios_entry_32;
    uint64_t smbios_entry_64;
};

struct stivale2_smp_info {
    uint32_t processor_id;
    uint32_t lapic_id;
    uint64_t target_stack;
    uint64_t goto_address;
    uint64_t extra_argument;
};

struct stivale2_struct_tag_smp {
    struct stivale2_tag tag;
    uint64_t flags;
    uint32_t bsp_lapic_id;
    uint32_t unused;
    uint64_t cpu_count;
    struct stivale2_smp_info smp_info[];
};

struct stivale2_struct_tag_pxe_server_info {
    struct stivale2_tag tag;
    uint32_t server_ip;
};

struct stivale2_struct_tag_mmio32_uart {
    struct stivale2_tag tag;
    uint64_t addr;
};

struct stivale2_struct_tag_dtb {
    struct stivale2_tag tag;
    uint64_t addr;
    uint64_t size;
};

struct stivale2_struct_tag_hhdm {
    struct stivale2_tag tag;
    uint64_t addr;
};

#undef _stivale2_split64

#endif