/************************************************************
   * EFI GUID Partition Table
   * Per Intel EFI Specification v1.02
   * http://developer.intel.com/technology/efi/efi.htm
   *
   * By Matt Domsch <Matt_Domsch@dell.com>  Fri Sep 22 22:15:56 CDT 2000  
   *   Copyright 2000,2001 Dell Inc.
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   * 
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   * 
   ************************************************************/
  
  #ifndef FS_PART_EFI_H_INCLUDED
  #define FS_PART_EFI_H_INCLUDED
  
  #include <linux/types.h>

  #include <linux/fs.h>
  #include <linux/genhd.h>
  #include <linux/kernel.h>
  #include <linux/major.h>
  #include <linux/string.h>
  #include <linux/efi.h>

  #include <linux/compiler.h>

  
  #define MSDOS_MBR_SIGNATURE 0xaa55
  #define EFI_PMBR_OSTYPE_EFI 0xEF
  #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE

  #define GPT_MBR_PROTECTIVE  1
  #define GPT_MBR_HYBRID      2

  #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
  #define GPT_HEADER_REVISION_V1 0x00010000
  #define GPT_PRIMARY_PARTITION_TABLE_LBA 1
  
  #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_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)
  
  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;

  
  	/* The rest of the logical block is reserved by UEFI and must be zero.
  	 * EFI standard handles this by:
  	 *
  	 * uint8_t		reserved2[ BlockSize - 92 ];
  	 */

  } __packed gpt_header;

  
  typedef struct _gpt_entry_attributes {
  	u64 required_to_function:1;
  	u64 reserved:47;
          u64 type_guid_specific:16;

  } __packed gpt_entry_attributes;

  
  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[72 / sizeof (efi_char16_t)];

  } __packed gpt_entry;

  typedef struct _gpt_mbr_record {
  	u8	boot_indicator; /* unused by EFI, set to 0x80 for bootable */
  	u8	start_head;     /* unused by EFI, pt start in CHS */
  	u8	start_sector;   /* unused by EFI, pt start in CHS */
  	u8	start_track;
  	u8	os_type;        /* EFI and legacy non-EFI OS types */
  	u8	end_head;       /* unused by EFI, pt end in CHS */
  	u8	end_sector;     /* unused by EFI, pt end in CHS */
  	u8	end_track;      /* unused by EFI, pt end in CHS */
  	__le32	starting_lba;   /* used by EFI - start addr of the on disk pt */
  	__le32	size_in_lba;    /* used by EFI - size of pt in LBA */
  } __packed gpt_mbr_record;

  typedef struct _legacy_mbr {
  	u8 boot_code[440];
  	__le32 unique_mbr_signature;
  	__le16 unknown;

  	gpt_mbr_record partition_record[4];

  	__le16 signature;

  } __packed legacy_mbr;

  
  /* Functions */

  extern int efi_partition(struct parsed_partitions *state);

  
  #endif