389 lines
9.0 KiB
C
389 lines
9.0 KiB
C
#include "types.h"
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/* How many bytes from the start of the file we search for the header. */
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#define MULTIBOOT_SEARCH 32768
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#define MULTIBOOT_HEADER_ALIGN 8
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/* The magic field should contain this. */
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#define MULTIBOOT2_HEADER_MAGIC 0xe85250d6
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/* This should be in %eax. */
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#define MULTIBOOT2_BOOTLOADER_MAGIC 0x36d76289
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/* Alignment of multiboot modules. */
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#define MULTIBOOT_MOD_ALIGN 0x00001000
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/* Alignment of the multiboot info structure. */
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#define MULTIBOOT_INFO_ALIGN 0x00000008
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/* Flags set in the 'flags' member of the multiboot header. */
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#define MULTIBOOT_TAG_ALIGN 8
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#define MULTIBOOT_TAG_TYPE_END 0
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#define MULTIBOOT_TAG_TYPE_CMDLINE 1
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#define MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME 2
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#define MULTIBOOT_TAG_TYPE_MODULE 3
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#define MULTIBOOT_TAG_TYPE_BASIC_MEMINFO 4
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#define MULTIBOOT_TAG_TYPE_BOOTDEV 5
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#define MULTIBOOT_TAG_TYPE_MMAP 6
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#define MULTIBOOT_TAG_TYPE_VBE 7
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#define MULTIBOOT_TAG_TYPE_FRAMEBUFFER 8
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#define MULTIBOOT_TAG_TYPE_ELF_SECTIONS 9
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#define MULTIBOOT_TAG_TYPE_APM 10
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#define MULTIBOOT_TAG_TYPE_EFI32 11
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#define MULTIBOOT_TAG_TYPE_EFI64 12
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#define MULTIBOOT_TAG_TYPE_SMBIOS 13
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#define MULTIBOOT_TAG_TYPE_ACPI_OLD 14
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#define MULTIBOOT_TAG_TYPE_ACPI_NEW 15
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#define MULTIBOOT_TAG_TYPE_NETWORK 16
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#define MULTIBOOT_TAG_TYPE_EFI_MMAP 17
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#define MULTIBOOT_TAG_TYPE_EFI_BS 18
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#define MULTIBOOT_TAG_TYPE_EFI32_IH 19
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#define MULTIBOOT_TAG_TYPE_EFI64_IH 20
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#define MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR 21
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#define MULTIBOOT_HEADER_TAG_END 0
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#define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST 1
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#define MULTIBOOT_HEADER_TAG_ADDRESS 2
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#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS 3
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#define MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS 4
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#define MULTIBOOT_HEADER_TAG_FRAMEBUFFER 5
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#define MULTIBOOT_HEADER_TAG_MODULE_ALIGN 6
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#define MULTIBOOT_HEADER_TAG_EFI_BS 7
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#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI32 8
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#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64 9
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#define MULTIBOOT_HEADER_TAG_RELOCATABLE 10
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#define MULTIBOOT_ARCHITECTURE_I386 0
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#define MULTIBOOT_ARCHITECTURE_MIPS32 4
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#define MULTIBOOT_HEADER_TAG_OPTIONAL 1
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#define MULTIBOOT_LOAD_PREFERENCE_NONE 0
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#define MULTIBOOT_LOAD_PREFERENCE_LOW 1
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#define MULTIBOOT_LOAD_PREFERENCE_HIGH 2
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#define MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED 1
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#define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED 2
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struct multiboot_header
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{
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/* Must be MULTIBOOT_MAGIC - see above. */
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u32 magic;
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/* ISA */
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u32 architecture;
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/* Total header length. */
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u32 header_length;
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/* The above fields plus this one must equal 0 mod 2^32. */
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u32 checksum;
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};
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struct multiboot_header_tag
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{
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u16 type;
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u16 flags;
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u32 size;
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};
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struct multiboot_header_tag_information_request
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 requests[0];
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};
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struct multiboot_header_tag_address
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 header_addr;
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u32 load_addr;
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u32 load_end_addr;
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u32 bss_end_addr;
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};
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struct multiboot_header_tag_entry_address
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 entry_addr;
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};
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struct multiboot_header_tag_console_flags
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 console_flags;
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};
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struct multiboot_header_tag_framebuffer
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 width;
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u32 height;
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u32 depth;
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};
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struct multiboot_header_tag_module_align
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{
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u16 type;
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u16 flags;
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u32 size;
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};
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struct multiboot_header_tag_relocatable
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{
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u16 type;
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u16 flags;
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u32 size;
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u32 min_addr;
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u32 max_addr;
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u32 align;
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u32 preference;
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};
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struct multiboot_color
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{
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u8 red;
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u8 green;
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u8 blue;
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};
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struct multiboot_mmap_entry
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{
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u64 addr;
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u64 len;
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#define MULTIBOOT_MEMORY_AVAILABLE 1
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#define MULTIBOOT_MEMORY_RESERVED 2
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#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
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#define MULTIBOOT_MEMORY_NVS 4
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#define MULTIBOOT_MEMORY_BADRAM 5
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u32 type;
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u32 zero;
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};
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typedef struct multiboot_mmap_entry multiboot_memory_map_t;
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struct multiboot_tag
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{
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u32 type;
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u32 size;
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};
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struct multiboot_tag_string
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{
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u32 type;
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u32 size;
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u8 string[0];
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};
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struct multiboot_tag_module
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{
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u32 type;
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u32 size;
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u32 mod_start;
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u32 mod_end;
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u8 cmdline[0];
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};
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struct multiboot_tag_basic_meminfo
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{
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u32 type;
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u32 size;
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u32 mem_lower;
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u32 mem_upper;
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};
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struct multiboot_tag_bootdev
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{
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u32 type;
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u32 size;
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u32 biosdev;
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u32 slice;
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u32 part;
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};
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struct multiboot_tag_mmap
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{
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u32 type;
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u32 size;
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u32 entry_size;
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u32 entry_version;
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struct multiboot_mmap_entry entries[0];
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};
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struct multiboot_vbe_info_block
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{
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u8 external_specification[512];
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};
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struct multiboot_vbe_mode_info_block
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{
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u8 external_specification[256];
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};
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struct multiboot_tag_vbe
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{
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u32 type;
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u32 size;
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u16 vbe_mode;
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u16 vbe_interface_seg;
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u16 vbe_interface_off;
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u16 vbe_interface_len;
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struct multiboot_vbe_info_block vbe_control_info;
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struct multiboot_vbe_mode_info_block vbe_mode_info;
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};
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struct multiboot_tag_framebuffer_common
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{
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u32 type;
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u32 size;
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u64 framebuffer_addr;
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u32 framebuffer_pitch;
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u32 framebuffer_width;
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u32 framebuffer_height;
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u8 framebuffer_bpp;
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#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
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#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
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#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
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u8 framebuffer_type;
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u16 reserved;
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};
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struct multiboot_tag_framebuffer
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{
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struct multiboot_tag_framebuffer_common common;
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union
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{
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struct
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{
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u16 framebuffer_palette_num_colors;
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struct multiboot_color framebuffer_palette[0];
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};
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struct
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{
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u8 framebuffer_red_field_position;
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u8 framebuffer_red_mask_size;
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u8 framebuffer_green_field_position;
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u8 framebuffer_green_mask_size;
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u8 framebuffer_blue_field_position;
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u8 framebuffer_blue_mask_size;
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};
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};
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};
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struct multiboot_tag_elf_sections
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{
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u32 type;
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u32 size;
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u32 num;
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u32 entsize;
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u32 shndx;
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u8 sections[0];
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};
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struct multiboot_tag_apm
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{
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u32 type;
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u32 size;
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u16 version;
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u16 cseg;
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u32 offset;
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u16 cseg_16;
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u16 dseg;
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u16 flags;
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u16 cseg_len;
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u16 cseg_16_len;
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u16 dseg_len;
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};
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struct multiboot_tag_efi32
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{
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u32 type;
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u32 size;
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u32 pointer;
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};
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struct multiboot_tag_efi64
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{
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u32 type;
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u32 size;
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u64 pointer;
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};
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struct multiboot_tag_smbios
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{
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u32 type;
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u32 size;
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u8 major;
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u8 minor;
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u8 reserved[6];
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u8 tables[0];
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};
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struct multiboot_tag_old_acpi
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{
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u32 type;
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u32 size;
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u8 rsdp[0];
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};
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struct multiboot_tag_new_acpi
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{
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u32 type;
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u32 size;
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u8 rsdp[0];
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};
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struct multiboot_tag_network
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{
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u32 type;
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u32 size;
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u8 dhcpack[0];
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};
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struct multiboot_tag_efi_mmap
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{
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u32 type;
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u32 size;
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u32 descr_size;
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u32 descr_vers;
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u8 efi_mmap[0];
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};
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struct multiboot_tag_efi32_ih
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{
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u32 type;
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u32 size;
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u32 pointer;
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};
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struct multiboot_tag_efi64_ih
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{
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u32 type;
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u32 size;
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u64 pointer;
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};
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struct multiboot_tag_load_base_addr
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{
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u32 type;
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u32 size;
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u32 load_base_addr;
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};
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void getbootinfo(void);
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void initmultiboot(const u32 addr);
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