Artesyn ATCA-8330 Installation and Use (April 2015) - Manual (Page 169)

Intelligent Peripheral Management Controller
ATCA-8330 Installation and Use (6806800S82B) 169
The boot options need to be stored as a sequence of zero terminated strings. The following
table describes in detail the format of the boot options to be used when setting or reading the
System Boot Options parameter #100.
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.
7.7 Asynchronous Event Notification
To enable payload applications to be informed about graceful shutdown/reboot requests, the
"FRU Activate (Deactivate)" and "FRU Control (Graceful Reboot)" command message is routed
as a LUN2 message to payload interface.
Table 7-5 IPMC Boot Parameter storage format
Byte Description
0-1 Number of bytes used for boot parameters (LSB first)
The number of bytes must be calculated and written into these two
bytes by the software, which writes into the storage area. The values
0x0000 and 0xFFFF indicate that no data has been written to the
storage area. If you are reading from the storage area and you find any
of these two values, your software should assume that no boot
firmware boot options have previously been written to the storage
area.
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)