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Diffstat (limited to 'include/part_efi.h')
| -rw-r--r-- | include/part_efi.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/part_efi.h b/include/part_efi.h new file mode 100644 index 0000000..eb5797a --- /dev/null +++ b/include/part_efi.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2008 RuggedCom, Inc. + * Richard Retanubun <RichardRetanubun@RuggedCom.com> + */ + +/* + * See also linux/fs/partitions/efi.h + * + * EFI GUID Partition Table + * Per Intel EFI Specification v1.02 + * http://developer.intel.com/technology/efi/efi.htm +*/ + +#include <linux/compiler.h> + +#ifndef _DISK_PART_EFI_H +#define _DISK_PART_EFI_H + +#include <efi.h> + +#define MSDOS_MBR_SIGNATURE 0xAA55 +#define MSDOS_MBR_BOOT_CODE_SIZE 440 +#define EFI_PMBR_OSTYPE_EFI 0xEF +#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE + +#define GPT_HEADER_SIGNATURE_UBOOT 0x5452415020494645ULL +#define GPT_HEADER_CHROMEOS_IGNORE 0x454d45524f4e4749ULL // 'IGNOREME' + +#define GPT_HEADER_REVISION_V1 0x00010000 +#define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL +#define GPT_ENTRY_NUMBERS CONFIG_EFI_PARTITION_ENTRIES_NUMBERS +#define GPT_ENTRY_SIZE 128 + +#define PARTITION_SYSTEM_GUID \ + EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ + 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) +#define LEGACY_MBR_PARTITION_GUID \ + EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ + 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) +#define PARTITION_MSFT_RESERVED_GUID \ + EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ + 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) +#define PARTITION_BASIC_DATA_GUID \ + EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ + 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) +#define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \ + EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \ + 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4) +#define PARTITION_LINUX_RAID_GUID \ + EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ + 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) +#define PARTITION_LINUX_SWAP_GUID \ + EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ + 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) +#define PARTITION_LINUX_LVM_GUID \ + EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ + 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) + +/* linux/include/efi.h */ +typedef u16 efi_char16_t; + +/* based on linux/include/genhd.h */ +struct partition { + u8 boot_ind; /* 0x80 - active */ + u8 head; /* starting head */ + u8 sector; /* starting sector */ + u8 cyl; /* starting cylinder */ + u8 sys_ind; /* What partition type */ + u8 end_head; /* end head */ + u8 end_sector; /* end sector */ + u8 end_cyl; /* end cylinder */ + __le32 start_sect; /* starting sector counting from 0 */ + __le32 nr_sects; /* nr of sectors in partition */ +} __packed; + +/* based on linux/fs/partitions/efi.h */ +typedef struct _gpt_header { + __le64 signature; + __le32 revision; + __le32 header_size; + __le32 header_crc32; + __le32 reserved1; + __le64 my_lba; + __le64 alternate_lba; + __le64 first_usable_lba; + __le64 last_usable_lba; + efi_guid_t disk_guid; + __le64 partition_entry_lba; + __le32 num_partition_entries; + __le32 sizeof_partition_entry; + __le32 partition_entry_array_crc32; +} __packed gpt_header; + +typedef union _gpt_entry_attributes { + struct { + u64 required_to_function:1; + u64 no_block_io_protocol:1; + u64 legacy_bios_bootable:1; + u64 reserved:45; + u64 type_guid_specific:16; + } fields; + unsigned long long raw; +} __packed gpt_entry_attributes; + +#define PARTNAME_SZ (72 / sizeof(efi_char16_t)) +typedef struct _gpt_entry { + efi_guid_t partition_type_guid; + efi_guid_t unique_partition_guid; + __le64 starting_lba; + __le64 ending_lba; + gpt_entry_attributes attributes; + efi_char16_t partition_name[PARTNAME_SZ]; +} __packed gpt_entry; + +typedef struct _legacy_mbr { + u8 boot_code[MSDOS_MBR_BOOT_CODE_SIZE]; + __le32 unique_mbr_signature; + __le16 unknown; + struct partition partition_record[4]; + __le16 signature; +} __packed legacy_mbr; + +#endif /* _DISK_PART_EFI_H */ |