/* 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 // 'EFI PART'

  #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 */