u-boot/doc/device-tree-bindings/bootstd.txt
Simon Glass e7b2ce191e bootstd: doc: Add documentation
Add documentation for this feature, including the commands and full
devicetree bindings.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-04-25 10:00:04 -04:00

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Text

U-Boot standard boot device (bootstd)
=====================================
This is the controlling device for U-Boot standard boot, providing a way to
boot operating systems in a way that can be controlled by distros.
Required properties:
compatible: "u-boot,boot-std"
Optional properties:
filename-prefixes:
List of strings, each a directory to search for bootflow files
bootdev-order:
List of bootdevs to check for bootflows, each a bootdev label (the media
uclass followed by the numeric sequence number of the media device)
Example:
bootstd {
compatible = "u-boot,boot-std";
filename-prefixes = "/", "/boot/";
bootdev-order = "mmc2", "mmc1";
syslinux {
compatible = "u-boot,distro-syslinux";
};
efi {
compatible = "u-boot,distro-efi";
};
};