u-boot/doc/README.gpt

19 This document describes the GPT partition table format and usage of
32 For instance, GUID of Basic data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
80 Its first partition entry ID has 0xEE value, and disk software, which is not
83 It is possible to define 128 linearly placed partition entries.
100 40      8 B     First usable LBA for partitions (primary partition table last
102 48      8 B     Last usable LBA (secondary partition table first LBA - 1)
105 80      4 B     Number of partition entries
106 84      4 B     Size of a partition entry (usually 128)
107 88      4 B     CRC32 of partition array
115 GPT headers and partition entries are protected by CRC32 (the POSIX CRC32).
123 CRC32 for partition entries (field "CRC32 of partition array") is calculated for
135 	   16      16 B    Unique partition GUID in (Big Endian)
142 	   Bit 0  - System partition
145 	   Bit 48-63 - Defined and used by the individual partition type
146 	   For Basic data partition :
154 To restore GUID partition table one needs to:
155 1. Define partition layout in the environment.
163    The fields 'name' and 'size' are mandatory for every partition.
166    If field 'size' of the last partition is 0, the partition is extended
175    The field 'bootable' is optional, it is used to mark the GPT partition
199 When provided, additionally partition data - name, size and starting
214 GPT partition names are a mechanism via which userspace and U-Boot can
219 employing 'swap' to exchange 'primary' and 'backup' partition names:
225 renamed.  In this example, mmc0's first partition will be renamed
243 For created partition, the used partition type GUID is
247 can specify a other partition type guid:
274 They are also used to display the type of partition in "part list" command.
287 If optional CONFIG_RANDOM_UUID is defined then for any partition which environment
294 Partitions layout can be printed by typing "mmc part". Note that each partition