ADLINK cPCI-3971 - Manual (Page 109)

Utilities 95
cPCI-3970
Example WDT Programming Procedure
Configuration of the watchdog timer is via serial interface. Detailed
description of the WDT IPMI commands can be found above. The
following example shows the procedure for configuring the WDT
works over a serial console. See “Communications with IPMC” on
page 137. for more information.
Figure 7-1: Example procedure for configuring the WDT over serial console
1. Configure the WDT by using the raw IPMI command
"Set Watchdog Timer" described above.
"Set Watchdog Timer" Command:
[18 00 24 43 01 01 08 50 00]
Description:
0x18: Net function. Defined in IPMI specification
0x00: Bus ID. Usually "0x00".
0x24: Command. Defined in IPMI specification.
0x43: Set "Don’t stop timer" and "OS Load".
0x01: Hard Reset.
0x01: Pre-timeout interval in seconds.
0x08: Timer Use Expiration flags cleared by OS Load.
0x50: Initial countdown value. Sets the interval
before watchdog timer expires.
80 count: 100ms * 80 = 8000 ms = 8 seconds
Successful response to command:
[1C 00 24 00]
[18 00 24 43 01 01 08 50 00] => Step 1: Set parameters to WDT
[1C 00 24 00] => Step 1: Response of setting OK.
[18 00 22]
=> Step 2: Trigger WDT
[1C 00 22 00] => Step 2: Response of trigger OK.
[18 00 25]
=> Get current configuration
[1C 00 25 00 43 01 01 00 50 00 28 00] => Response during WDT countdown
<A>: BMC Watchdog expired
<A>: Reset alert
[18 00 25]
=> Get current configuration
[1C 00 25 00 03 01 01 08 50 00 00 00 ] => Response after Reset