Product guide

132 Configuration Software and Utilities
133MAXDATA PLATINUM 90004R Server System
Table 27. Boot Option Parameters (continued)
Parameter # Parameter Data (non-volatile unless otherwise noted)
Boot initiator
info
(semi-
volatile)
[1]
6 Address & Identity information for the party that initiated the boot.
The party that initiates the boot writes this parameter and the boot
info acknowledge parameter prior to issuing the command that causes
the system power up, power cycle, or reset. This data is written by the
remote console application, not the BMC.
Boot Source
Data 1- Channel Number. Channel that delivers the boot command
(e.g. chassis control). BIOS and boot software (e.g. service
partition or OS loader) can use the Get Channel Sessions to
find out information about the party that initiated the boot
[7:4] - Reserved
[3:0] - Channel Number
Data 2:5 - Session ID. Session ID for session that the boot command will
be issued over. This value can be used with the Get Channel
Sessions command to find out information about the party
that initiated the boot
Data 6:9 - Boot Info Timestamp. This timestamp is used to help software
determine whether the boot information is ‘stale’ or not. A
service partition or OS loader may elect to ignore the boot
information if it is older than expected
The boot initiator should load this field with the timestamp value from
the IPMI Get SEL Time command prior to issuing the command that
initiates the boot.
Boot initiator
mailbox
(semi-
volatile)
[1][2]
7 This parameter is used as a ‘mailbox’ for holding information that
directs the operation of the OS loader or service partition software.
Note: Since this information is retained by the BMC and may be
readable by other software entities, care should be taken to avoid using
it to carry
‘secret’ data.
Data1: Set Selector = Block selector
Selects which 16-byte info block to access. 0-based.
Data 2: (17) Block data
The first three bytes of block #0 are required to be an IANA Enterprise ID
Number (least significant byte first) for the company or organization that
has specified the loader.
Up to 16-bytes per block of information regarding boot initiator, based
on protocol and medium.
The BMC supports five blocks of storage for this command. Previous
values are overwritten. The BMC does not automatically clear any
remaining data bytes if fewer than 16 bytes are written to a given block.
All other
parameters
All
Others
Reserved
1. The designation ‘semi-volatile’ means that the parameter will be kept across system power cycles, resets, system
power on/off, and sleep state changes, but will not be preserved if the management controller loses standby power
or is cold reset. Parameters designated as ‘semi-volatile’ are initialized to 0’s upon controller power up or hard reset,
unless otherwise specified.
2. IPMI allows software to use the boot initiator mailbox as a way for a remote application to pass OEM parameters for
additional selection of the boot process and direction of the startup of post-boot software. If additional parameters are
not included, the system boots the primary/first-scanned device of the type specified.