Artesyn ATCA-8330 Installation and Use (April 2015) - Manual (Page 78)

BIOS
ATCA-8330 Installation and Use (6806800S82B) 78
4.5 IPMI Boot Parameter
Many BIOS setup parameters and setup default parameters are stored as IPMI boot parameters
within a non-volatile memory controlled by the IPMC. IPMI boot parameter supports USER and
DEFAULT area. The USER area contains the current BIOS setup settings. The parameters in the
USER area can be modified by the BIOS setup utility and can also be modified remotely by IPMI
commands. For example, through shelf manager.
The DEFAULT area holds the BIOS default settings. This area is read only. BIOS default settings
are loaded when selecting the Restore Defaults Item on BIOS Save & Exit Menu.
A detailed description of the IPMI Boot Parameter and the corresponding IPMI commands is
available in the
System Boot Options Parameter #100 on page 188 .
The main advantage of using IPMI boot parameter is that the parameters stored as IPMI boot
parameters are not changed after a BIOS upgrade or a BIOS boot bank switch. BIOS will not
return to the BIOS default settings after a BIOS upgrade.
Normally, the BIOS setup parameters are stored within the BIOS flash. The following figure and
description helps you to understand how a BIOS setup parameter and an IPMI boot parameter
interact.
Figure 4-4 IPMI Boot Parameter
BIOS Parameter
Default Parameter
USER
Read/Write
DEFUALT
Read Only
BIOS Flash 1
BIOS Flash 2
BIOS
IPMC
KCS
IPMB-0
Boot Parameter
Storage (EEPROM)
To ShMM
Private I2C