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DragonOS/kernel/driver/multiboot2/multiboot2.h

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/**
* @file multiboot2.h
* @brief multiboot2 解析
* @author Zone.N (Zone.Niuzh@hotmail.com)
* @version 1.0
* @date 2021-09-18
* @copyright MIT LICENSE
* https://github.com/Simple-XX/SimpleKernel
* @par change log:
* <table>
* <tr><th>Date<th>Author<th>Description
* <tr><td>2021-09-18<td>digmouse233<td>迁移到 doxygen
* </table>
*/
#ifndef _MULTIBOOT2_H_
#define _MULTIBOOT2_H_
#include "stdint.h"
#include "stdbool.h"
#include "boot_info.h"
/// @see Multiboot2 Specification version 2.0.pdf
// 启动后，在 32 位内核进入点，机器状态如下：
// 1. CS 指向基地址为 0x00000000，限长为4G – 1的代码段描述符。
// 2. DS，SS，ES，FS 和 GS 指向基地址为0x00000000，限长为4G –
// 1的数据段描述符。
// 3. A20 地址线已经打开。
// 4. 页机制被禁止。
// 5. 中断被禁止。
// 6. EAX = 0x2BADB002
// 7. 系统信息和启动信息块的线性地址保存在 EBX中（相当于一个指针）。
// 以下即为这个信息块的结构
/**
* @brief MULTIBOOT2 接口抽象
*/
class MULTIBOOT2 {
private:
/* How many bytes from the start of the file we search for the header. */
static constexpr const uint32_t MULTIBOOT_SEARCH = 32768;
static constexpr const uint32_t MULTIBOOT_HEADER_ALIGN = 8;
/* The magic field should contain this. */
static constexpr const uint32_t MULTIBOOT2_HEADER_MAGIC = 0xe85250d6;
/* This should be in %eax. */
static constexpr const uint32_t MULTIBOOT2_BOOTLOADER_MAGIC = 0x36d76289;
/* Alignment of multiboot modules. */
static constexpr const uint32_t MULTIBOOT_MOD_ALIGN = 0x00001000;
/* Alignment of the multiboot info structure. */
static constexpr const uint32_t MULTIBOOT_INFO_ALIGN = 0x00000008;
/* Flags set in the 'flags' member of the multiboot header. */
static constexpr const uint32_t MULTIBOOT_TAG_ALIGN = 8;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_END = 0;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_CMDLINE = 1;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME = 2;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_MODULE = 3;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_BASIC_MEMINFO = 4;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_BOOTDEV = 5;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_MMAP = 6;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_VBE = 7;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_FRAMEBUFFER = 8;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_ELF_SECTIONS = 9;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_APM = 10;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI32 = 11;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI64 = 12;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_SMBIOS = 13;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_ACPI_OLD = 14;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_ACPI_NEW = 15;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_NETWORK = 16;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI_MMAP = 17;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI_BS = 18;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI32_IH = 19;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_EFI64_IH = 20;
static constexpr const uint32_t MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR = 21;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_END = 0;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST =
1;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_ADDRESS = 2;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS = 3;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS = 4;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_FRAMEBUFFER = 5;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_MODULE_ALIGN = 6;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_EFI_BS = 7;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI32 =
8;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64 =
9;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_RELOCATABLE = 10;
static constexpr const uint32_t MULTIBOOT_ARCHITECTURE_I386 = 0;
static constexpr const uint32_t MULTIBOOT_ARCHITECTURE_MIPS32 = 4;
static constexpr const uint32_t MULTIBOOT_HEADER_TAG_OPTIONAL = 1;
static constexpr const uint32_t MULTIBOOT_LOAD_PREFERENCE_NONE = 0;
static constexpr const uint32_t MULTIBOOT_LOAD_PREFERENCE_LOW = 1;
static constexpr const uint32_t MULTIBOOT_LOAD_PREFERENCE_HIGH = 2;
static constexpr const uint32_t MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED =
1;
static constexpr const uint32_t MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED =
2;
struct multiboot_header_t {
// Must be MULTIBOOT_MAGIC - see above.
uint32_t magic;
// ISA
uint32_t architecture;
// Total header length.
uint32_t header_length;
// The above fields plus this one must equal 0 mod 2^32.
uint32_t checksum;
};
struct multiboot_header_tag_t {
uint16_t type;
uint16_t flags;
uint32_t size;
};
struct multiboot_header_tag_information_request_t : multiboot_header_tag_t {
uint32_t requests[0];
};
struct multiboot_header_tag_address_t : multiboot_header_tag_t {
uint32_t header_addr;
uint32_t load_addr;
uint32_t load_end_addr;
uint32_t bss_end_addr;
};
struct multiboot_header_tag_entry_address_t : multiboot_header_tag_t {
uint32_t entry_addr;
};
struct multiboot_header_tag_console_flags_t : multiboot_header_tag_t {
uint32_t console_flags;
};
struct multiboot_header_tag_framebuffer_t : multiboot_header_tag_t {
uint32_t width;
uint32_t height;
uint32_t depth;
};
struct multiboot_header_tag_module_align_t : multiboot_header_tag_t {
;
};
struct multiboot_header_tag_relocatable_t : multiboot_header_tag_t {
uint32_t min_addr;
uint32_t max_addr;
uint32_t align;
uint32_t preference;
};
struct multiboot_color_t {
uint8_t red;
uint8_t green;
uint8_t blue;
};
static constexpr const uint32_t MULTIBOOT_MEMORY_AVAILABLE = 1;
static constexpr const uint32_t MULTIBOOT_MEMORY_RESERVED = 2;
static constexpr const uint32_t MULTIBOOT_MEMORY_ACPI_RECLAIMABLE = 3;
static constexpr const uint32_t MULTIBOOT_MEMORY_NVS = 4;
static constexpr const uint32_t MULTIBOOT_MEMORY_BADRAM = 5;
struct multiboot_mmap_entry_t {
uint64_t addr;
uint64_t len;
uint32_t type;
uint32_t zero;
};
struct multiboot_tag_t {
uint32_t type;
uint32_t size;
};
struct multiboot_tag_string_t : multiboot_tag_t {
char string[0];
};
struct multiboot_tag_module_t : multiboot_tag_t {
uint32_t mod_start;
uint32_t mod_end;
char cmdline[0];
};
struct multiboot_tag_basic_meminfo_t : multiboot_tag_t {
uint32_t mem_lower;
uint32_t mem_upper;
};
struct multiboot_tag_bootdev_t : multiboot_tag_t {
uint32_t biosdev;
uint32_t slice;
uint32_t part;
};
struct multiboot_tag_mmap_t : multiboot_tag_t {
uint32_t entry_size;
uint32_t entry_version;
multiboot_mmap_entry_t entries[0];
};
struct multiboot_vbe_info_block_t {
uint8_t external_specification[512];
};
struct multiboot_vbe_mode_info_block_t {
uint8_t external_specification[256];
};
struct multiboot_tag_vbe_t : multiboot_tag_t {
uint16_t vbe_mode;
uint16_t vbe_interface_seg;
uint16_t vbe_interface_off;
uint16_t vbe_interface_len;
multiboot_vbe_info_block_t vbe_control_info;
multiboot_vbe_mode_info_block_t vbe_mode_info;
};
struct multiboot_tag_elf_sections_t : multiboot_tag_t {
uint32_t num;
uint32_t entsize;
// 段字符串表索引
uint32_t shndx;
char sections[0];
};
struct multiboot_tag_apm_t : multiboot_tag_t {
uint16_t version;
uint16_t cseg;
uint32_t offset;
uint16_t cseg_16;
uint16_t dseg;
uint16_t flags;
uint16_t cseg_len;
uint16_t cseg_16_len;
uint16_t dseg_len;
};
struct multiboot_tag_efi32_t : multiboot_tag_t {
uint32_t pointer;
};
struct multiboot_tag_efi64_t : multiboot_tag_t {
uint64_t pointer;
};
struct multiboot_tag_smbios_t : multiboot_tag_t {
uint8_t major;
uint8_t minor;
uint8_t reserved[6];
uint8_t tables[0];
};
struct multiboot_tag_old_acpi_t : multiboot_tag_t {
uint8_t rsdp[0];
};
struct multiboot_tag_new_acpi_t : multiboot_tag_t {
uint8_t rsdp[0];
};
struct multiboot_tag_network_t : multiboot_tag_t {
uint8_t dhcpack[0];
};
struct multiboot_tag_efi_mmap_t : multiboot_tag_t {
uint32_t descr_size;
uint32_t descr_vers;
uint8_t efi_mmap[0];
};
struct multiboot_tag_efi32_ih_t : multiboot_tag_t {
uint32_t pointer;
};
struct multiboot_tag_efi64_ih_t : multiboot_tag_t {
uint64_t pointer;
};
struct multiboot_tag_load_base_addr_t : multiboot_tag_t {
uint32_t load_base_addr;
};
// 迭代变量
// 与 multiboot_tag_t 相同
struct iter_data_t {
uint32_t type;
uint32_t size;
};
public:
/**
* @brief 初始化
* @return true 成功
* @return false 失败
*/
static bool multiboot2_init(void);
/**
* @brief 迭代器
* @param _fun 迭代操作
* @param _data 数据
*/
static void multiboot2_iter(bool (*_fun)(const iter_data_t *, void *),
void *_data);
/**
* @brief 获取内存信息
* @param _iter_data 迭代变量
* @param _data 数据
* @return true 成功
* @return false 失败
*/
static bool get_memory(const iter_data_t *_iter_data, void *_data);
};
namespace BOOT_INFO {
/// 魔数
extern "C" uint32_t multiboot2_magic;
};
#endif /* _MULTIBOOT2_H_ */
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