[PATCH 2/3] doc/README.gpt: define partition type GUID for U-Boot environment

[Tom Rini]

On Fri, Nov 20, 2020 at 11:45:36AM +0100, Rasmus Villemoes wrote:

> 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 <rasmus.villemoes at prevas.dk>

Applied to u-boot/master, thanks!

-- 
Tom
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