This page describes the U-Boot environment variables that specifically applies to certain Dave '''DAVE Embeddded Systems''' SOMs.

The variables listed on the following variables table applies to Naon, Maya and Dido SOMs. Please note that the this variables refers to U-Boot and Linux provided with NELK version 4.0.0.

<pre>{| class="wikitable" | ethaddr | align="center" style= xx"background:xx#f0f0f0;"|'''Variable'''| align="center" style="background:xx#f0f0f0;"|'''Values'''| align="center" style="background:xx#f0f0f0;"|'''Description'''| align="center" style="background:xx:xx #f0f0f0;"|'''Notes'''|- MAC address for | eth0 interface<br>eth1ethaddr1 = | xx:xx:xx:xx:xx:xx - | MAC address for both eth0 and eth1 interface interfaces| Available with NELK 4.0.0 and above|-| dual_emac = [| 0|- 1] - [0: CPSW switch mode | - 1: CPSW dual EMAC mode]cpsw = [| Configures CPSW mode | Available with NELK 4.0.0and above|1] - select primary phy for networking operations in U| cpsw | 0 -Boot 1 [0: phy 6 -> 100Mbit Naon module | - 1: phy 1 -> 1Gbit external, phy] | Selects primary phy for networking operations in U-Boot | Available with NELK 2.0.0 and above<br>External phy available on Naon-EVB-Lite and Naon-EVB-Mid]|-| giga = | on [on: gigabit] - if present, select | Selects gigabit speed on gigabit link</pre> === Naon === The following variables applies to Naon CPU module. Please note that the this variable refers to U-Boot and Linux provided | Available with NELK version 42.0.0.and above|-| naon_host| Naon: [evb_mid - evb_lite]<br>Maya: [maya_naon_evb_lite]<prebr>naon_host Dido: [evb_mid | - evb_lite] - | Selects carrier board pinmux| Available with NELK 2.0.0 and above</prebr>Please refer to U-Boot source tree for the available pinmux|-|+ align="bottom" style== Maya === The following variables applies to Maya CPU module. Please note that the this variable refers to "caption-side: bottom" | U-Boot and Linux provided with NELK version 4.0.0.specific variables for Naon-family SOMs|}

The following variables applies to Dido CPU module. Please note that the this variable variables refers to U-Boot and Linux provided with NELK version 4.0.0.