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doc: bootstd: Describe the optional extension_overlay_addr environment

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Add extension_overlay_addr description to the list of environment
variables that can be useful during the standard boot.

Signed-off-by: Kory Maincent (TI.com) <kory.maincent@bootlin.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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Kory Maincent (TI.com)
2025-11-06 23:26:28 +01:00
committed by Heinrich Schuchardt
parent 811d41221b
commit 81458bd113
1 changed files with 3 additions and 0 deletions
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doc/develop/bootstd/overview.rst
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@@ -252,6 +252,9 @@ Various environment variables are used by standard boot. These allow the board
to control where things are placed when booting the OS. You should ensure that
your boards sets values for these.
extension_overlay_addr (needed if extension is used)
Address at which to load the extension FDT overlays, e.g. 0x02000000
fdtfile
Name of the flattened device tree (FDT) file to load, e.g.
"rockchip/rk3399-rockpro64.dtb"