D-16 SPARCengine Ultra AX
i
OEM Technical Manual • May 1999
D.14 ASM Operation
A discussion of how ASM features are used by the Ultra AXi can be found in
Section 3.4 “Advanced System Monitoring (ASM)” on page 3-9.
Supported env-monitor values
1. enabled-with-fans: If set, OBP monitors and reacts as follows:
■ If the CPU thermistor temperature is above the warning temperature
threshold, a warning is issued.
■ If the CPU thermistor reading is above the shutdown temperature threshold,
the system will shutdown.
■ If either of the voltages are out of the acceptable range, OBP issues a warning
for out of range values.
■ The optional fans are monitored and a warning is issued if the fans are not
present or if they fail.
2. enabled: same as enabled-with-fans without optional fan checking.
Caution – Because the CPU fan is required for CPU modules with straight fin
heatsinks (e.g., 360 MHz, part number 501-5148-xx; 440 MHz, part number 501-5149-
xx), only use enabled-with-fans.
3. disabled: Does not monitor any ASM features at OBP level. It creates the
device tree node and properties for OS, but OS considers the monitoring disabled.
4. disabled*: This value turns off OBP monitoring and does not create the device
tree node. (The * is part of the setting, not a reference to a footnote).
D.15 Field Upgrade of OBP
OBP can be upgraded in the field.
To determine which version of OBP is installed, perform the following:
If running OBP, at the OK prompt type:
ok .version<cr>
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