PT CPC5565, Руководство пользователя, Страница: 71 / 118

Serial Interface Subsystem
71
Get Status Command
The IPMC status is four bytes describing the logical state of the IPMC and the payload. Table
4-6, “IPMC Status Bits,” provides a description of the IPMC status bits:
The IPMC firmware notifies the payload about changes of all status bits except for bits 0-2 of
byte 1 by sending an unprintable character (ASCII 07, BELL) over the payload interface. The
payload is expected to use the
Get Status command to identify pending events and other SIPL
commands to provide a response (if necessary). The event notification character is sent in a
synchronous manner, and does not appear in the contents of SIPL messages sent to the
payload.
The Get Status command has the following synopsis:
[B8 xx 00 0A 40 00]
The IPMC responds to the Get Status command with the following reply:
[BC xx 00 00 0A 40 00 <byte1> <byte2> <byte3> <byte4>]
Table 4-6: IPMC Status Bits
Bit Name Description
Byte 1
0 (LSB) Control If set to 0, the IPMC control over the payload is disabled.
1-2 NA Reserved
3 Sensor Alert If set to 1, indicates that at least one of the IPMC sensors detects
threshold crossing.
4 Reset Alert If set to 1, indicates that the payload is going to be reset.
5 Shutdown Alert If set to 1, indicates that the payload is going to be shut down.
6 Diagnostic Interrupt
Request If set to 1, indicates that a payload diagnostic interrupt request has
arrived.
7 (MSB) Graceful Reboot
Request If set to 1, indicates that the payload is requested to initiate the graceful
reboot sequence.
Byte 2
0-7 NA Reserved
Byte 3
0-7 NA Reserved
Byte 4
0-3 NA Reserved
4 Message Received If set to 1, indicates that a message for the payload has been received.
5-7 NA Reserved