72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
#pragma once
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#include <stdint.h>
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// https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html#Boot-information
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#define MULTIBOOT2_TAG_END 0
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#define MULTIBOOT2_TAG_CMDLINE 1
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#define MULTIBOOT2_TAG_MMAP 6
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#define MULTIBOOT2_TAG_FRAMEBUFFER 8
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#define MULTIBOOT2_TAG_OLD_RSDP 14
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#define MULTIBOOT2_TAG_NEW_RSDP 15
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#define MULTIBOOT2_FRAMEBUFFER_TYPE_RGB 1
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#define MULTIBOOT2_MAGIC 0x36d76289
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struct multiboot2_tag_t
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{
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uint32_t type;
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uint32_t size;
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const multiboot2_tag_t* next() const
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{
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return reinterpret_cast<const multiboot2_tag_t*>(
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reinterpret_cast<uintptr_t>(this) + ((size + 7) & ~7)
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);
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}
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} __attribute__((packed));
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struct multiboot2_cmdline_tag_t : public multiboot2_tag_t
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{
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char cmdline[];
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} __attribute__((packed));
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struct multiboot2_mmap_entry_t
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{
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uint64_t base_addr;
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uint64_t length;
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uint32_t type;
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uint32_t reserved;
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} __attribute__((packed));
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struct multiboot2_mmap_tag_t : public multiboot2_tag_t
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{
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uint32_t entry_size;
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uint32_t entry_version;
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multiboot2_mmap_entry_t entries[];
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} __attribute__((packed));
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struct multiboot2_framebuffer_tag_t : public multiboot2_tag_t
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{
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uint64_t framebuffer_addr;
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uint32_t framebuffer_pitch;
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uint32_t framebuffer_width;
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uint32_t framebuffer_height;
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uint8_t framebuffer_bpp;
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uint8_t framebuffer_type;
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uint8_t reserved;
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} __attribute__((packed));
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struct multiboot2_rsdp_tag_t : public multiboot2_tag_t
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{
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uint8_t data[];
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} __attribute__((packed));
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struct multiboot2_info_t
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{
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uint32_t total_size;
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uint32_t reserved;
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multiboot2_tag_t tags[];
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} __attribute__((packed));
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