6.4.2. barebox environment

This driver provides an environment for barebox from the devicetree.

Required properties:

• compatible: should be barebox,environment

• device-path: path to the device environment is on

Optional properties:

• file-path: path to a file in the device named by device-path

The device-path is a multistring property. The first string should contain a nodepath to the node containing the physical device of the environment or a nodepath to a partition described by the OF partition binding. The subsequent strings are of the form <type>:<options> to further describe the path to the environment. Supported values for <type>:

partname:<partname>

This describes a partition on a device. <partname> can be the label for MTD partitions, the number for DOS partitions (beginning with 0) or the name for GPT partitions.

If the environment is located in a GPT partition, use 6C3737F2-07F8-45D1-AD45-15D260AAB24D as partition type GUID.

The file-path is the name of a file located in a FAT filesystem on the device named in device-path. This filesystem will be mounted and the environment loaded from the file’s location in the directory tree.

Example:

environment {
      compatible = "barebox,environment";
      device-path = &flash, "partname:barebox-environment";
};

environment@1 {
      compatible = "barebox,environment";
      device-path = &mmc, "partname:1";
      file-path = "barebox.env";
};