u-boot.git/doc/README.gpt, branch master

doc: fix references to distro documentation

2023-01-20T15:38:52+00:00

Commit 37c5195dfcd157 ("doc: Move distro boot doc to rST") renamed
doc/README.distro to doc/develop/distro.rst.

Signed-off-by: Dario Binacchi 
Reviewed-by: Patrice Chotard 
Reviewed-by: Soeren Moch 
Reviewed-by: Patrick Delaunay

doc/README.gpt: Fix typo 'a optionnal'

2023-01-18T17:46:13+00:00

Change the string 'a optionnal' to 'an optional'.

Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Simon Glass

cmd: gpt: Add option to write GPT partitions to environment variable

2021-05-04T16:52:46+00:00

This change would enhance the existing 'gpt read' command to allow
(optionally) writing of the read GPT partitions to an environment
variable in the UBOOT partitions layout format. This would allow users
to easily change the overall partition settings by editing said variable
and then using the variable in the 'gpt write' and 'gpt verify' commands.

Signed-off-by: Farhan Ali 
Cc: Simon Glass 
Cc: Heinrich Schuchardt 
Cc: Corneliu Doban 
Cc: Rayagonda Kokatanur 
Cc: Rasmus Villemoes 
Reviewed-by: Simon Glass

doc/README.gpt: reflow partition type GUID table

2021-01-16T19:49:09+00:00

The previous patch made the table look bad. Fix it, and leave some
space for a future element being a bit longer than the current
maximum.

Signed-off-by: Rasmus Villemoes

doc/README.gpt: define partition type GUID for U-Boot environment

2021-01-16T19:49:09+00:00

When setting aside a GPT partition for holding the U-Boot environment,
having a partition type GUID [1] indicating "Linux filesystem" (as
most tools default to) is somewhat misleading - and there's no other
well-known type GUID that is better suited. So to have a canonical
value to put into the type field, define

    3de21764-95bd-54bd-a5c3-4abe786f38a8

to mean a partition holding a U-Boot environment.

This is a v5 namespace-name GUID [2], generated [3] from a namespace
of "25cbcde0-8642-47c6-a298-1a3a57cd256b" and name "U-Boot
environment".

Should future type GUIDs be defined in the context of U-Boot, it's
sensible to use that same namespace GUID.

[1] https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
[2] https://en.wikipedia.org/wiki/Universally_unique_identifier#Versions_3_and_5_(namespace_name-based)
[3] https://www.uuidtools.com/v5

Signed-off-by: Rasmus Villemoes

doc: arch: sandbox: Replace all the instances of README.sandbox

2019-07-29T13:32:09+00:00

commit 49116e6d236d ("doc: arch: Convert README.sandbox to reST")
Moves README.sandbox to doc/arch.
Replace all the existing instances to point to the right documentation
file.

Signed-off-by: Keerthy

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

doc: remove duplicate text in README.gpt

2017-09-07T14:44:34+00:00

Signed-off-by: Alison Chaiken

GPT: provide commands to selectively rename partitions

2017-08-05T00:35:27+00:00

This patch provides support in u-boot for renaming GPT
partitions.  The renaming is accomplished via new 'gpt swap'
and 'gpt rename' commands.

The 'swap' mode returns an error if no matching partition names
are found, or if the number of partitions with one name does not equal
the number with the second name.   The 'rename' variant always
succeeds as long as a partition with the provided number exists.

Rewriting the partition table has the side-effect that all partitions
end up with "msftdata" flag set.  The reason is that partition type
PARTITION_BASIC_DATA_GUID is hard-coded in the gpt_fill_pte()
function.  This does not appear to cause any harm.

Signed-off-by: Alison Chaiken

GPT: add accessor function for disk GUID

2017-08-04T13:56:04+00:00

In order to read the GPT, modify the partition name strings, and then
write out a new GPT, the disk GUID is needed.  While there is an
existing accessor for the partition UUIDs, there is none yet for the
disk GUID.

Changes since v6: none.

Signed-off-by: Alison Chaiken