ADLINK Technology LEC-iMX6, Technical Reference

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8 Overview
1.5 Getting Started
This section describes how to configure the boot select jumpers on the LEC-BASE baseboard
and how to configure U-Boot to run a Linux image.
1.5.1 Configure boot select jumpers
Before starting up the LEC-iMX6, the boot select jumpers on the LEC-BASE baseboard must be
configured to correspond with the storage location of the U-Boot boot loader. This section also
discusses boot requirements for the Operating System.
Before you boot your system, consider the storage locations of the following software:

U-Boot boot loader (the factory default location is the onboard SPI flash)

Linux Operating System
The storage locations (devices) of these two software packages can be the same or distinct.
1. To boot the system from a specific boot device (location of the U-Boot boot loader), the
LEC-BASE boot select jumpers must be set as shown in the following photos.
2. The storage location of the Operating System can be set during boot up through a
U-Boot command entry. Otherwise, the default setting will be used.
Boot from module eMMC
(JP16=2-3; JP17=1-2; JP18 1-2; JP19=1-2)
Boot from module SPI flash [factory default location]
(JP16=1-2; JP17=1-2; JP18 1-2; JP19=1-2)
Boot from carrier SATA disk
(JP16=2-3; JP17=2-3; JP18 2-3; JP19=1-2)
Boot from carrier SD card
(JP16=1-2; JP17=2-3; JP18 2-3; JP19=1-2)