Kontron KTAM3874-pITX - Manual (Page 24)

KTD-S0057-I Page 20 U-Boot Bootloader
KTAM3874/pITX Software Guide
5 U-Boot Bootloader
TI ® requires a two-part U-Boot version. The ROM code loads the first part (named U-Boot-MIN) into the on-
chip prozessor RAM and starts automatically this part. After setting up the clocks and initializing all
necessary peripherals U-Boot-MIN loads the final version. The KTAM3874/pITX board offers four different
load mechanisms:
SPI TM (default, see chapter ' SPI TM Bootloader ' ), MMC, Ethernet and UART.
For development purposes the UART and Ethernet methods promise some advantages.
5.1 UART Bootloader
The first serial port ( UART0) on connector J1304 provides the serial console interface. For communication
a standard terminal program on a desktop computer is necessary (e.g. TeraTerm). The next line shows the
default serial console settings:
115 kBaud / 8 data bits / 1 stop bit / no parity
The UART method strictly needs a jumper on pin header J1101 (see User's Guide chapter 'Serial Console').
After power on the following screen appears:
Now you have to select the XMODEM transfer mode.