Table of Contents

Configure Flattened Device Tree

Synopsis

  fdt [--timeout <timeout>] <uri|image>

Examples

Boot a kernel with an initrd and device tree blob

  #!ipxe
  kernel /images/vmlinuz console=ttyAMA0
  initrd /images/initrd.img
  fdt /images/rk3566-radxa-zero-3e.dtb
  boot

Description

Downloads the specified image and configures it for use as a Flattened Device Tree (FDT). A download progress timeout can be specified (in milliseconds) using the --timeout option.

The device tree will be passed automatically to any supported executable image.

Command status

Success The FDT was successfully downloaded
Failure The FDT was not successfully downloaded

See also

Notes

The terms “flattened device tree (FDT)” and “device tree blob (DTB)” are equivalent.

The downloaded device tree does not in any way affect the device tree used by iPXE itself. It controls only the device tree that will be passed to the booted operating system.

If your firmware already provides a working device tree to iPXE, then you do not need to use this command. iPXE will default to passing through the working device tree to the booted operating system.