# Lukasz Majewski <l.majewski@samsung.com>
#
#
-# See file CREDITS for list of people who contributed to this
-# project.
-#
-# 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
-
+# SPDX-License-Identifier: GPL-2.0+
Glossary:
========
This document describes the GPT partition table format and usage of
the gpt command in u-boot.
-
UUID introduction:
====================
LBA -1 |Secondary GPT Header |
----------------------------------------------------------
-
For a legacy reasons, GPT's LBA 0 sector has a MBR structure. It is called
"protective MBR".
Its first partition entry ID has 0xEE value, and disk software, which is not
TOTAL: 512 B
-
IMPORTANT:
GPT headers and partition entries are protected by CRC32 (the POSIX CRC32).
Observe, how Secondary GPT is placed in the memory. It is NOT a mirror reflect
of the Primary.
-
Partition Entry Format:
----------------------
Offset Size Description
Bit 62 - Hidden
Bit 63 - Not mount
-
Creating GPT partitions in U-Boot:
==============
2. From u-boot prompt type:
gpt write mmc 0 $partitions
-
Useful info:
============