Barebox automatically fixes up several entries to the root and chosen-node of the devicetree passed to the booted system.
These entries contain information about the hardware, reset source and the barebox version string. Add documentation on how to query these information from the booted linux system. Signed-off-by: Johannes Zink <[email protected]> --- Documentation/devicetree/index.rst | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/index.rst b/Documentation/devicetree/index.rst index 36fa69058d1d..92a91dc35a11 100644 --- a/Documentation/devicetree/index.rst +++ b/Documentation/devicetree/index.rst @@ -151,3 +151,24 @@ Contents: bindings/regulator/* bindings/rtc/* bindings/watchdog/* + +automatic boot argument fixups to the devicetree +------------------------------------------------ + +Barebox automatically fixes up some arguments in the devicetree. + +In the devicetree root barebox fixes up + + * serial-number (if available) + * machine compatible (if available) + +In the ``chosen``-node barebox fixes up + + * barebox-version + * reset-source + * reset-source-instance (if available) + * reset-source-device (phandle, only if available) + * bootsource + * boot-hartid (only on RISCV) + +These values can be read from the booted linux system in ``/proc/device-tree/``. -- 2.30.2
