Kontron AT8404 - Manual (Page 96)

Software Description
83 AT8404 User Guide
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4.3.5 IPMC Firmware Code
IPMC firmware code is organized into boot code and operational code, both of which are stored in a flash
module. Upon an IPMC reset, the IPMC executes the boot code and performs the following:
• Self test to verify the status of its hardware and memory.
• Calculates a checksum of the operational code.
• Communicates with the Firmware Upgrade Manager (FUM) in order to inform the IPMC watchdog that
the current IPMC firmware is suitable for execution.
Upon successful verification of the operational code checksum, the firmware will jump to the operational
code.
4.3.6 LEDs
For LED positions on the front panel, refer to chapter 3.1.11 Front Panel Elements.
4.3.6.1 Hot Swap LED (Blue LED)
The AT8404 Carrier Board supports a blue Hot Swap LED mounted on the front panel. This LED indicates when
it is safe to remove the Carrier from the chassis. The on-board IPMC drives this LED to indicate the hot swap
state. The following states are possible:
4.3.6.2 Out-Of-Service (OOS) LED (ATCA LED1)
Red LED
Table 4-20: LED state
LED state Description
OFF Board is in M4 state, normal state when board is in operation.
ON Ready for hot swap
Short blink Board is in M5 state. Deactivation in progress
Long blink Activation in progress.
Table 4-21: OOS LED state
LED state Description
ON
1) The bootup handshake between FUM and IPMC is not finished or failed
2) The firmware update is in progress and the new IPMC firmware image is
copied to the FUM
3) power denied from ShMgr
Blinking The FUM is programming the IPMC due to a firmware update or a rollback
OFF The IPMC is operational