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COMe-bTL6 - User Guide. Rev. 1.5
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3.11.1.
Booting the SPI Flash Chip
Initially, the EFI Shell is booted with an USB key containing the binary used to flash the on-module SPI Flash chip.
T
o
program the external SPI Flash chip on the carrier board with the BIOS binary, use an external programmer.
Register for Kontron’s Customer Section to get access to BIOS downloads and PCN service.
To boot either the carrier board or on-module SPI flash chip, perform the following:
1.
Connect a SPI flash with the correct size (similar to BIOS binary (*.BIN) file size) to the carrier SPI interface.
The external SPI flash chip on the carrier is required to be 32 MByte (256MBit).
2.
Open pin A34 (BIOS_DIS0#) and connect pin B88 (BIOS_DIS1#) to ground to enable the external SPI Flash chip to
boot on carrier
SPI or ground pin A34 (BIOS_DIS0#), and open pin B88 (BIOS_DIS1#) to enable SPI Flash chip to
boot on-module SPI.
The command line is EtaOemAfuX64.efi BTL6R110.bin /B /P /B /ME
In case of change, check Kontron’s Customer Section for the latest BIOS binary package with
reference command line.
ME must be disable in the BIOS setup before entering the command line: Advanced>PCH-FW
Configuration> ME
3.11.2.
SPI Boot
The SPI Flash device stores the boot BIOS. The COMe-bTL6 supports on-module and carrier board SPI Flash devices.
Optionally, an on-modules fail-safe second SPI flash can be implemented for additional safety, see Figure 1: Block
Diagram COMe-bTL6. For more detailed information, contact Kontron Support.
The pins A34 (BIOS_DIS0#) and B88 (BIOS_DIS1#) configure the SPI Flash device to be used, see Table 32.
Table 32: SPI Boot Pin Configuration
BIOS_DIS0#
BIOS_DIS1#
Boot Bus
Function
Open
Open
SPI
Boot on on-module SPI
Open
GND
SPI
Boot on carrier board SPI
The BIOS cannot be split between two chips. Booting takes place either from the on-module
SPI Flash chip or carrier board SPI Flash chip.
Table 33: Supported SPI Boot Flash
Size
Manufacturer
Part Number
Package Type
Device ID
32 MByte
Winbond
W25Q256JVEIQ
WSON-8 8x6 mm
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