User guide

8 GR-LEON4-ITX Development Board

Quick Start Guide

only provides PIN headers with the receive and transmit lines for the serial terminal it is

recommended that a monitor, keyboard and mouse is attached to the board. According the

normal conventions for the PS/2 interface, the top connector (green) is the Mouse interface

and the bottom connector (purple) is the Keyboard interface. If using a USB keyboard and

mouse the devices should be connected via a USB hub and the USB memory stick should

be directly connected to one of the board's USB ports.

The connected monitor must support DVI-A output, the board can also be connected to a

monitor using a DVI-to-VGA adapter.

It is recommended, but not required, to connect the board to a Ethernet network where it can

receive an IP address via DHCP and access the Internet. This will allow system software to

automatically set the system date and time. If an Ethernet cable is attached it should be

connected to the first Ethernet port (the lower port).

Booting Linux

The bootloader will start Linux when the power adapter is attached to the board. Please skip

to section 3 for usage instructions. Section 5.1 contains transcripts of the output that should

be shown on the monitor during the boot process.

2.3 Connecting with the GRMON debug monitor

Overview

GRMON is a competent debug monitor that is used to debug GRLIB/LEON systems. The

GR-LEON4-ITX board has a number of debug interfaces that are all supported by GRMON.

Note: If you intend to use GRMON to work with the board it is recommended to clear the

SPI boot PROM as described in section 4.5 .

Pre-requisites

The board is delivered with a JTAG adapter that can be used to connect to the board. For a

description of how to set up the JTAG device, or for other JTAG adapters please see the

GRMON User's Manual. The documentation and a evaluation version of GRMON is

available from http://www.gaisler.com. Unless you will be loading software that will use the

USB Flash stick, it is recommended to not connect the USB Flash stick to the board.

Figure 2-2: User JTAG headers