beautypg.com

Appendix a, Bootloader (eboot) – DFI KS200 Manual User Manual

Page 25

background image

www.dfi.com

25

Appendix A

Appendix A Software Support

BSP (Board Support Package)

BSP

BSP Source Code

Demo Image

AM35x_BSP

COMMON_TI_V1

Tool

Manual

User Guide

TI SDCard Utility

SD Boot

NAND Boot

Project

AM35x_OSDesign

Bootloader (EBOOT)

The TS200 board boots from Flash memory using the internal boot ROM of the AM3517 ARM

Cortex-A8 processor. The bootloader architecture consists of an initial bootstrap loader called

the XLDR and a secondary loader called EBOOT. The internal boot ROM performs a minimum

hardware setup, and then copies the XLDR from the first good block of Flash memory to a

fixed location in internal SRAM. The boot ROM then jumps to the entry point of the XLDR.

The XLDR is a BSP specific bootstrap loader whose function is to do basic hardware initial-

ization and copy the second stage, full featured EBOOT from Flash memory into RAM for

execution. The XLDRsize is limited by the size of internal SRAM and does not implement any

features other than what are needed for bootstrap.

Serial User Interface

EBOOT supports a user interface over the serial port exposed on the TS200 as shown in the

following table through a RS232 connector. The actual physical CPU UART corresponding to

this connector is configured to run with the following configuration:

• 115200 baud

• 8 data bits

• 1 stop bit

• No parity

Note:

DFI RS232 standard cable (NO.332-7530404-000) or the following same specifications

cable.

RS232 Cable Pin Assignments

DB9 Connector (RS232) PC Side DB9 Connector (RS232) Product Side

Femal Femal

1

6

2

3 8 4 9 5

1

6 2 7 3 8 4 9

5

7

x

x

This manual is related to the following products: