Table of Contents
Advertisement
5.14 External BIOS
The COM Express® Eval Type 10 supports external boot. By closing Jumper J46 the module's onboard BIOS is disabled
and the system will boot from an external Firmware Hub in U43 PLCC socket J74.
For modules supporting SPI boot the COM Express® Eval Type 10 provides a SPI socket J76 for an optional available
SPI Flash. SPI is part of COM.0 Specification Rev 2.0 and external SPI boot can be enabled by closing Jumper J75.
Please check the documentation of your module if SPI is supported and which SPI Flash size is required.
Booting from external BIOS:
»
Close Jumper J46 to boot from the baseboard's LPC Firmware
»
Close Jumper J75 to boot from the baseboard's SPI Flash
Flashing the external BIOS:
»
Prepare a bootable USB flash drive and save BIOS and flash utility in the root folder
Please check Application Note KEMAP046 avialble at Kontron's customer section for more details
»
Open J46/J75 to boot from the module's BIOS
»
Power on the system and boot from our USB flash drive
»
Close J46 to enable the LPC FWH or close J75 to enable the SPI Flash
»
Execute the BIOS update command (e.g. afudos.exe bios.rom /P /B /N /C /X)
»
Reboot your system if flash procedure has finished
»
Your system should now start from external BIOS
Note:
Please check module documentation if external boot from LPC FWH and/or SPI Flash is supported
Warning: Do not close both jumpers at the same time
35
COM Express® Eval Type 10 / Connectors and Features
Advertisement
Table of Contents
