LXR uboot/disk/part

   1/*
   2 * Copyright (C) 2008 RuggedCom, Inc.
   3 * Richard Retanubun <RichardRetanubun@RuggedCom.com>
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*
  25 * See also linux/fs/partitions/efi.h
  26 *
  27 * EFI GUID Partition Table
  28 * Per Intel EFI Specification v1.02
  29 * http://developer.intel.com/technology/efi/efi.htm
  30*/
  31
  32#ifndef _DISK_PART_EFI_H
  33#define _DISK_PART_EFI_H
  34
  35#define MSDOS_MBR_SIGNATURE 0xAA55
  36#define EFI_PMBR_OSTYPE_EFI 0xEF
  37#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
  38
  39#define GPT_BLOCK_SIZE 512
  40#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
  41#define GPT_HEADER_REVISION_V1 0x00010000
  42#define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
  43#define GPT_ENTRY_NAME "gpt"
  44
  45#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
  46        ((efi_guid_t) \
  47        {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
  48                (b) & 0xff, ((b) >> 8) & 0xff, \
  49                (c) & 0xff, ((c) >> 8) & 0xff, \
  50                (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  51
  52#define PARTITION_SYSTEM_GUID \
  53        EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
  54                0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
  55#define LEGACY_MBR_PARTITION_GUID \
  56        EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
  57                0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
  58#define PARTITION_MSFT_RESERVED_GUID \
  59        EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
  60                0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
  61#define PARTITION_BASIC_DATA_GUID \
  62        EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
  63                0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
  64#define PARTITION_LINUX_RAID_GUID \
  65        EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
  66                0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
  67#define PARTITION_LINUX_SWAP_GUID \
  68        EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
  69                0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
  70#define PARTITION_LINUX_LVM_GUID \
  71        EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
  72                0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
  73
  74/* linux/include/efi.h */
  75typedef unsigned short efi_char16_t;
  76
  77typedef struct {
  78        unsigned char b[16];
  79} efi_guid_t;
  80
  81/* based on linux/include/genhd.h */
  82struct partition {
  83        unsigned char boot_ind;         /* 0x80 - active */
  84        unsigned char head;             /* starting head */
  85        unsigned char sector;           /* starting sector */
  86        unsigned char cyl;              /* starting cylinder */
  87        unsigned char sys_ind;          /* What partition type */
  88        unsigned char end_head;         /* end head */
  89        unsigned char end_sector;       /* end sector */
  90        unsigned char end_cyl;          /* end cylinder */
  91        unsigned char start_sect[4];    /* starting sector counting from 0 */
  92        unsigned char nr_sects[4];      /* nr of sectors in partition */
  93} __attribute__ ((packed));
  94
  95/* based on linux/fs/partitions/efi.h */
  96typedef struct _gpt_header {
  97        unsigned char signature[8];
  98        unsigned char revision[4];
  99        unsigned char header_size[4];
 100        unsigned char header_crc32[4];
 101        unsigned char reserved1[4];
 102        unsigned char my_lba[8];
 103        unsigned char alternate_lba[8];
 104        unsigned char first_usable_lba[8];
 105        unsigned char last_usable_lba[8];
 106        efi_guid_t disk_guid;
 107        unsigned char partition_entry_lba[8];
 108        unsigned char num_partition_entries[4];
 109        unsigned char sizeof_partition_entry[4];
 110        unsigned char partition_entry_array_crc32[4];
 111        unsigned char reserved2[GPT_BLOCK_SIZE - 92];
 112} __attribute__ ((packed)) gpt_header;
 113
 114typedef struct _gpt_entry_attributes {
 115        unsigned long long required_to_function:1;
 116        unsigned long long reserved:47;
 117        unsigned long long type_guid_specific:16;
 118} __attribute__ ((packed)) gpt_entry_attributes;
 119
 120typedef struct _gpt_entry {
 121        efi_guid_t partition_type_guid;
 122        efi_guid_t unique_partition_guid;
 123        unsigned char starting_lba[8];
 124        unsigned char ending_lba[8];
 125        gpt_entry_attributes attributes;
 126        efi_char16_t partition_name[72 / sizeof(efi_char16_t)];
 127}
 128__attribute__ ((packed)) gpt_entry;
 129
 130typedef struct _legacy_mbr {
 131        unsigned char boot_code[440];
 132        unsigned char unique_mbr_signature[4];
 133        unsigned char unknown[2];
 134        struct partition partition_record[4];
 135        unsigned char signature[2];
 136} __attribute__ ((packed)) legacy_mbr;
 137
 138#endif  /* _DISK_PART_EFI_H */
 139