Sandbox Bootmeth

The sandbox bootmeth is only used for testing. It does not provide any facility for booting an OS. While sandbox can do all the processing before the actual boot, it is not connected in this bootmeth.

When invoked on a bootdev, this bootmeth pretends to find a bootflow and creates the associated structure.

When the bootflow is booted, the bootmeth returns -ENOTSUPP indicating that it is not supported.

The compatible string "u-boot,sandbox-bootmeth" is used for the driver. It is present if CONFIG_BOOTMETH_SANDBOX is enabled.