[[PageOutline]]


[=#u-boot]
== Venice U-Boot Bootloader
Gateworks supports the U-Boot Bootloader for the Venice 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 Venice:
 - IMX8M FEC GbE
 - IMX8MP EQOS GbE
 - USB Host support (USB Mass Storage and USB Networking for ASIX USB 2.0 USB Network device)
 - eMMC / microSD

The following items are not currently supported in the Gateworks U-Boot for Venice:
- PCIe support (include PCIe based Gbe)

Additional resources:
 * [http://dev.gateworks.com/venice/boot_firmware/ Pre-built boot firmware (updated from U-Boot/Linux)]
 * [http://dev.gateworks.com/venice/images/ firmware-venice* JTAG binaries]
 * [https://github.com/gateworks/uboot-venice source]

see [wiki:uboot] for more info


[=#default]
== Restoring defaults 
The Venice 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:
{{{#!bash
run restore_env && reset
}}}

== Editing the environment
If you would like to modify the default environment you can edit the [https://github.com/Gateworks/bsp-venice/blob/master/venice.env venice/venice.env] in the Venice BSP.