Specifications

QSSC-S4R Technical Product Specification BIOS Initialization
129
code. The system cannot boot unless the error is resolved. The user needs to replace the faulty part and restart
the system.
x Major: If the “Post Error Pause” setup option is enabled, the system goes directly to the Error Manager to display
the error and log the error code to SEL. Otherwise, the system continues to boot and no prompt is given for the
error, although the error code is logged to the Error Manager and in a SEL message.
x Minor: The message is displayed on the screen or on the Error Manager screen. The system continues booting in
a degraded state. The user may want to replace the erroneous unit. The POST Error Pause option setting in the
BIOS setup does not have any effect on this error.
x There is also a rare, low-probability potential system hang that can occur during multiprocessor initialization with
non-identical processors. See Section 16.1.1 for more details.
Table 80. Mixed Processor Configurations
Error Severity System Action
Processor
stepping
mismatch
Major The BIOS detects the stepping difference and responds as follows:
x Checks to see whether the steppings are compatible – typically+/- one
stepping.§ If so, no error is generated – this is not an error condition.
x Continues to boot the system successfully.
Otherwise, this is a stepping mismatch error, and the BIOS responds as follows:
x Displays “0193: Processor 0x stepping mismatch” message in the Error
Manager and logs it into the SEL.
Takes Minor Error action and continues to boot the system.
Processor
cache not
identical
Fatal The BIOS detects the error condition and responds as follows:
x Logs the error into the SEL.
x Alerts the Integrated BMC about the configuration error.
x Does not disable the processor.
x Displays “0192: Processor 0x cache size mismatch detected” message
in the Error Manager
x Takes Fatal Error action (see above) and will not boot until the fault
condition is remedied.
Processor
frequency
(speed)not
identical
Major The BIOS detects the processor frequency difference , responds as follows:
x Adjusts all processor frequencies to lowest common denominator.
x No error is generated – this is not an error condition.
x Continues to boot the system successfully.
If the frequencies for all processors cannot all be adjusted to be the same, then
this is an error , and the BIOS responds as follows:
x Logs the error into the SEL.
x Displays “0197: Processor speeds mismatched” message in the error
manager.
x Takes Fatal Error action (see above) and will not boot until the fault
condition is remedied.
Processor
Intel®
QuickPath
Interconnect
speeds not
identical
Major The BIOS detects the QPI link speeds and responds as follows:
x Adjusts all QPI interconnect link speeds to highest common speed.
x No error is generated – this is not an error condition.
x Continues to boot the system successfully.
If the link speeds for all QPI links cannot be adjusted to be the same, then this is
an error, and the BIOS
x Logs the error into the SEL.
x Displays “0195: Processor 0x Intel(R) QPI speed mismatch message in
the Error Manager.
x Takes Fatal Error action (see above) and will not boot until the fault
condition
Processor
microcode
missing
Fatal The BIOS detects the error condition and responds as follows:
x Logs the error into the SEL.§
x Does not disable the processor.
x Displays “8180: Processor 0x unable to apply microcode update”
message in the error manager.
x Pauses the system for user intervention.
Processor Minor The BIOS responds as follows: