Kontron KTAM3874-pITX - Manual (Page 27)

KTD-S0057-I Page 23 U-Boot Bootloader
KTAM3874/pITX Software Guide
5.3 SPI TM Bootloader
This chapter describes the programming of the SPI TM flash with the serial interface. Alternative you can load
both U-Boot versions for example from the microSD TM card.
Assumption: the default boot order is active (SPI TM flash first boot device).
The picture shows the fixed address ranges within the SPI TM flash.
After power on U-Boot starts from SPI TM . Hit any key to stop the autoboot process. As a first step you should
erase the bootloader part of the SPI TM flash with the following commands:
sf probe 0:0
sf erase 0 60000
Thereafter type ' loadb 81000000 ' at the 'KTAM3874#' prompt and press 'Enter'. Then choose the Kermit
transfer mode. Before the download you can clear the memory with
mw.b 81000000 ff 20000
Load the U-Boot-MIN file (normally named 'u-boot.min.spi') and then type
sf write 81000000 0 20000