This is the command-line utility fmcconfig that is used to setup and query the FMC system controller on the XEM6006 (Shuttle LX1). With this utility, you can:

1. Write a binary image to an attached I2C EEPROM on the FMC module.
2. Read a binary image from an attached I2C EEPROM on the FMC module.
3. Configure the FMC carrier’s startup parameters.

The FMC (VITA 57) specification contains provisions for FMC modules to have a formatted I2C EEPROM which may be queried by the FMC carrier to configure the connector’s adjustable voltage (Vadj). On the XEM6006, this adjustable voltage is provided by a switching regulator with a selectable voltage. The system controller sets this voltage in a manner determined by the startup parameters and the formatted I2C EEPROM on the carrier module.

According to the FMC specification, the EEPROM should be formatted in accordance with the IPMI specification. It is the customer’s responsibility to format this EEPROM appropriately, but Opal Kelly provides two utilities to assist:

• FMC IPMI EEPROM Generator – This tool is available online through our website. This web form takes a number of inputs and generates a formatted I2C EEPROM image that can be stored on the FMC module’s EEPROM.
• FMCCONFIG – This sample utility is provided in binary form which can be used to transfer the EEPROM binary to the FMC module.

To use fmcconfig, place the executable, the FMCConfig bitfile (fmcconfig.bit), and (optionally) an EEPROM binary in the same folder. The XEM6006 must be attached to your PC, recognized by Windows, and not be in use by any other applications.

# Write "image.bin" to EEPROM as a 8192-byte (64kbit) EEPROM image.
fmcconfig -write-eeprom image.bin 8192Code language: CSS (css)

Reading an EEPROM

# Read the 8192-byte EEPROM image and store it to the file image.bin.
fmcconfig -read-eeprom image.bin 8192Code language: PHP (php)

Available startup parameters are:

• FMC Geographical Address (0, 1, 2, 3)
  This determines the value of the pins at GA1:GA0. Typically, these pins are used to set an I2C address for devices on the FMC module. The FMC System Controller will force I2C command addresses to be consistent with the current geographical address configured.
• Vadj Boot Mode (auto, fallback, manual)
  • MANUAL – Vadj is always set according to these startup parameters. Any IPMI EEPROM present is ignored for Vadj settings.
  • AUTO – The IPMI EEPROM is queried for Vadj setting. If Vadj cannot be determined from the EEPROM or if no EEPROM is present, Vadj will be disabled.
  • FALLBACK – The IPMI EEPROM is queried for Vadj setting. If Vadj cannot be determined from the EEPROM or if no EEPROM is present, Vadj will be set according to these startup parameters.
• EEPROM Size (typically 128, 256, … 8192) – The size determines how many address bytes are used to communicate with the EEPROM. If the size is 256 or smaller, a single byte is used. Otherwise, two bytes are used.
  • Vadj (0.8, 1.2, 1.25, 1.5, 1.8, 2.5, 3.3) – Sets the voltage to use in MANUAL or FALLBACK Vadj boot modes.
• Vadj Enable (0, 1) – Determines if the Vadj regulator is enabled for MANUAL or FALLBACK modes.
  • 0 – Vadj is disabled in MANUAL mode and disabled in FALLBACK mode if an IPMI EEPROM is not found on the peripheral.
  • 1 – Vadj is enabled in MANUAL mode and enabled in FALLBACK mode if an IPMI EEPROM is not found on the peripheral.

fmcconfig -setup 0 fallback 8192 3.3 1    ### [Factory Default]
GA1:GA0 = 0:0
Vadj set according to IPMI, if available, otherwise 3.3v.
EEPROM size is 8192 (24LC64, e.g.)


fmcconfig -setup 2 manual 8192 2.5 1
GA1:GA0 = 1:0
Vadj will be set to 2.5. Any present IPMI EEPROM is ignored.
EEPROM size is 8192 (24LC64, e.g.)


fmcconfig -setup 0 auto 256 3.3 0
GA1:GA0 = 0:0
Vadj set according to IPMI, if available, otherwise disabled.
EEPROM size is 256 (24LC02, e.g.)Code language: PHP (php)