U-Boot Bootloader

Gateworks supports the U-Boot Bootloader for the Malibu product family.

The purpose of a bootloader is to load the Linux kernel and execute it passing it configuration parameters such as an optional kernel command-line, an optional initial ramdisk filesystem, and a device-tree.

The following items are supported in the Gateworks U-Boot for Malibu:

• eth0 (RGMII)
• USB Host mode (USB Mass Storage and USB Networking for various USB Ethernet adapters supported by U-Boot
• eMMC / microSD

The following items are not currently supported in the Gateworks U-Boot for Malibu:

• PCIe support
• USB device mode support (for USB OTG)

Additional resources:

• ​Pre-built boot firmware (updated from U-Boot/Linux)
• ​firmware-malibu* JTAG binaries
• ​source

see uboot for more info

Restoring defaults

The Malibu boot firmware has a copy of the original U-Boot env that was created during build time.

To restore default bootloader environment variables:

• At the "Hit any key to stop autoboot:" prompt press any key.

• Execute the following command:

  run restore_env && reset
  

Editing the environment

If you would like to modify the default environment you can edit the ​malibu.env in the Malibu BSP.