44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
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#pragma once
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#include "fs/MBR.h"
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#define GPT_SIGNATURE "EFI PART"
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#define GPT_SIGNATURE_LENGTH 8
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#define GPT_SECTOR_SIZE 512ul
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#define GPT_REVISION 0x00010000
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namespace GPT
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{
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struct [[gnu::packed]] Header
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{
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u8 signature[GPT_SIGNATURE_LENGTH];
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u32 revision;
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u32 hdr_size;
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u32 checksum;
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u32 reserved;
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u64 this_lba;
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u64 alternate_lba;
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u64 first_usable;
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u64 last_usable;
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u8 guid[16];
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u64 partition_table_lba;
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u32 num_partitions;
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u32 partition_entry_size;
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u32 partition_table_checksum;
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char blank[512 - 0x5c];
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};
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struct [[gnu::packed]] PartitionEntry
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{
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u8 type_guid[16];
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u8 unique_guid[16];
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u64 start_lba;
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u64 end_lba;
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u64 attributes;
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char partition_name[72]; // Could be more or less, see Header::partition_entry_size - 0x38 for the actual size.
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};
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Result<bool> identify(SharedPtr<Device> device);
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u32 checksum_gpt(Header header);
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}
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