Kontron CP6002 IPMI - Manual (Page 16)

IPMI Firmware User Guide CP6002
Page 16 ID: 1039-1613, Rev. 2.0
5. Communication Between the Management
Controller and EFI
For communication between EFI and the Management Controller there is a “private” KCS in-
terface. During the boot process the EFI sends the following IPMI commands to the Manage-
ment Controller:
• An OEM command which reports a good or a bad checksum.
• A Standard IPMI command “Set Watchdog Timer” to stop a possibly running IPMI
watchdog timer.
• A Standard IPMI command “Set SEL Time” to set the event log time to the time which is
kept by the RTC.
• The OEM IPMI command “Set Firmware Parameters” with some parameters which for
example sets the Management Controller to a BMC or a SMC as selected in the EFI shell.
• A Standard IPMI command “Set ACPI Power State” to set the state “ACPI legacy on”
• Etc.
6. Hot Swap and Shut Down
6.1 Hot Swap Handle and Hot Swap (Blue) LED
The blue Hot Swap LED (HS LED) of an inserted board in a powered rack is normally used to
indicate the board's operational status so as to facilitate hot-swapping of the board:
• ON
The payload is inactive and may be:
• Activated by closing the Hot Swap Handle, or
• The board may be extracted. The “M-state” is 1.
An exception is the case when payload power is off e.g. after a shut down via an
IPMI chassis command and the handle is still closed. Here the M-state is 4. To
show the operator that the payload power is off, the blue LED will be on in spite of
the closed handle.
• BLINKING
Changing from active state to inactive state or vice versa.
Don't extract the board now. The “M-state” is 2, 5 or 6.
• OFF
The payload is active.
Don't extract the board now. Normally the extraction is impossible because the handle is
closed and locked. The “M-state” is 3 or 4.