Kontron COMe-cPC2 User Manual download pdf (Page 29)

COMe-cPC2 / Features and Interfaces

3.3 LPC boot

The COMe-cPC2 supports boot from an external Firmwarehub on LPC bus (LPC FWH). The external LPC FWH can be activated

with signal A34 “BIOS_DISABLE#” or according newer specifications “BIOS_DIS0#” in following configuration:

BIOS_DIS0# BIOS_DIS1# Function

open open Boot on-module BIOS

GND open Boot baseboard LPC FWH

open GND Baseboard SPI = Boot Device 1, on-module SPI = Boot Device 2

GND GND Baseboard SPI = Boot Device 2, on-module SPI = Boot Device 1

Using an external LPC Firmware Hub

To program an external LPC FWH follow these steps:

» Connect a 1MB LPC FWH to the module's LPC interface

» Open pin A34 to boot from the module BIOS

» Boot the module to DOS with access to the BIOS image and Firmware Update Utility aufdos.exe / batch file provided

on EMD Customer Section

» Connect pin A43 (BIOS_DIS0#) to ground to enable the external LPC FWH

» Execute Flash.bat to flash the BIOS image to the external LPC FWH

» reboot

Your module will now boot from the external LPC FWH when BIOS_DIS0# is grounded.

To create a BIOS with custom defaults:

» Change your BIOS settings

» Save as custom defaults to RTC/Flash and Exit (module will now always start with these settings)

» Extract the BIOS including custom defaults with afudos.exe biosname.rom /O in DOS or kflash.exe backup

biosname.rom in Windows

Flash Backup should show “Enter new Password” first time saving custom defaults. If it is

not possible to set a new password or entering a password shows an error message, please

clean up CMOS data with DOS command: jidacmos rtc /clean (jidacmos utility is available

at Kontron’s Customer Section)

You can download all AMI CORE8 update utilities at AMI.com:

http://www.ami.com/support/downloads/amiflash.zip

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Kontron COMe-cPC2 User Manual Page 29