Kontron AM4301 - Manual (Page 22)

10 AM4301
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2.4.7 FWUM Firmware Upgrade Procedure
It is important to use compatible, MMC, FWUM versions. Since all these software and hardware solution are
exchanging information, they must be in synch. Please always follow Kontron documentation for all your
upgrade.
The recommended upgrade sequence must be: FWUM, MMC,.
FWUM Firmware upgrade is done using IPMIFWU utility. This is a Linux utility developed by Kontron that use
the serial port of any computer to exchange with the FirmWare Upgrade Manager (FWUM) in order to upgrade
to FWUM or the MMC firmware. Then this tool doesn't need the KCS driver to run over the Carrier AMC (it
doesn't use the IPMI interfaces) but requires a serial cable hook on the AMC module.
Type the following to perform MMC firmware upgrade
ipmifwu -p -f -m -P /dev/ttyS0 -S
Please note that during FWUM firmware upgrade the MMC is held in reset.
2.4.7.1 Hot-Swap Process
The AM4301 AMC has the ability to be hot-swapped in and out of a AMC Carrier. The onboard MMC manages
the AMC's power-up and power-down transitions. The list below illustrates this process for power down
request.
1 Ejector latch is opened. HOT_SWAP_PB# assertion. MMC firmware detects the assertion of this signal.
2 MMC sends "Module Handle Open" event message to AMC Carrier. The corresponding M state of AMC
Carrier moves from M4-> M5.
3 AMC Carrier moves from M5 -> M6 if the SHMC grants the request and then send the FRU Control
requesting quiesced state to the AMC.
4 The firmware deasserts payload power and sends "Module Quiesced" event message to the AMC Carrier
where it transitions from M6 to M1 state.
2.4.7.2 Hot-Swap LED
The AM4301 supports a blue Hot Swap LED mounted on the front panel. This LED indicates when it is safe to
remove the AMC from the AMC Carrier. The on-board MMC drives this LED to indicate the hot-swap state. The
following states are possible:
Table 2-3: Hot-Swap LED Description
LED state Description
OFF AMC is in M4 state, normal state when board is in operation.
ON Ready for hot swap.
Short blink M5 state deactivation request
Long blink M2 state Activation Request.