Secondary Bios; Spi Secondary Bios - ADLINK Technology COM Express Express-BASE7 User Manual

7. Secondary BIOS

The Express-BASE7 supports Secondary BIOS using Serial Peripheral Interface (SPI) for COM.0 Rev. 3.0
modules.
Secondary BIOS solutions can be used as an alternative to the on-module BIOS and provide support for the
following:
•
Testing new BIOS versions
•
Development of firmware modifications
•
Recovery if soldered BIOS on module is corrupted
7.1.

SPI Secondary BIOS

SPI is supported by PICMG COM.0 Rev. 3.0 to provide a Secondary BIOS for COM Express Rev 3.0 modules that
support a SPI Secondary BIOS.
To use the BIOS on the module:
•
Short pins 1-2 on both JP23 and JP24. (as shown at right)
To use the SPI BIOS on the carrier board:
•
Short pins 1-2 on JP23, pins 2-3 on JP24.
Open the SPI BIOS socket and insert the secondary BIOS flash
chip.
Secondary BIOS
Express-BASE7
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