Artesyn ATCA-7480 Installation and Use (February 2015) - Manual (Page 314)

IPMI Feature Set
ATCA-7480 Installation and Use (6806800T17A) 314
When writing or reading from the storage area, you can only read or write chunks of 16 bytes
at a time. For this reason, the IPMC memory is divided into numbered blocks of 16 bytes which
need to be addressed individually. For this purpose the "block selector" field in the request data
field is used.
9.10 Asynchronous Event Notification
To make payload applications to be informed about graceful shutdown/reboot requests, the
"FRU Activate (Deactivate)" and "FRU Control (Graceful Reboot)" commands messages are
routed as a LUN2 message to payload interface.
The provided payload application has registered to these commands via OpenIPMI library,
which gets informed and can take all necessary actions before the payload is gracefully
rebooted/shut-down.
Graceful Reboot and Graceful Shutdown is also communicated to the Intel CPU via internal
communication channel.
9.11 Serial Line Selection
The ATCA-7480 provides two serial interfaces from payload. By default, the first is routed to the
front connector and the second to the RTM. In addition, there is an IPMC debug interface,
which can be routed either to the front or to the RTM (this function is just available if the RTM
provides a serial connector at the front).
2-n Boot Parameters data
The boot parameters are stored as ASCII text with the following general format:
=, where all name/value pairs are separated by a zero byte. The end
of the boot parameter data is indicated by two zero bytes. Allowed and supported
name/value pairs are blade specific.
N+1 - n+2 16 bit checksum over the boot parameters data section (LSB first).
Table 9-11 IPMC Boot Parameter storage format (continued)
Byte Description