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NetStructure
TM
ZT 7102 Chassis Management Module
Built-In Self Test
Technical Product Specification 47
6.0 Built-In Self Test
The CMM provides for a Built-In Self Test (BIST). The test will be run automatically after
power-up or front-panel reset. This test will detect flash corruption as well as other critical
hardware failures.
Results for the BIST are displayed on the console through the serial port during boot time. Results
of BIST will also be available through the CLI if the OS successfully boots.
If the BIST detects a fatal error, the CMM will not be allowed to function as an active CMM.
6.1 BIST Test Flow
The following state diagram shows the order of the tests RedBoot* runs following a power-up or
front-panel reset. On every state before reaching active CMM, if there is an error, RedBoot will log
the error event into the EEPROM, route the error message to the serial port, and continue booting.
If the execution hangs before the OS loads due to the nature of the error, the CMM hangs. If the OS
successfully boots, it will alert users to any errors that occurred during boot.
Figure 9. BIST Flow Chart
P
ower U
p/
Reset
RedBoot
*
Image
Checksum
FPGA
Image
Checksum
Memory Test
FPGA,
DS1307, NIC
BlueCat*
l
oaded (activ
e
CMM)
BlueCat
Image
Checksum
IPMB
Bus Test
*Other names and brands may be claimed as the property of others.