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Intel
®
NetStructure
TM
ZT 7102 Chassis Management Module
Built-In Self Test
Technical Product Specification 49
6.5 Late-BIST
Late-BIST involves disabling the watchdog timer to indicate a successful boot of RedBoot. It will
also verify the checksum of the OS image stored in the FIS directory before proceeding with the
boot script execution.
Figure 10 shows at which times during the boot cycle the various stages of BIST are performed.
6.6 Event Log Area and Event Management
Errors detected by the BIST are stored in an event log. The event-log area is designed to have 269
entries. Each entry is 14 bytes. The event-log area is located in EEPROM on the CMM. The BIST
can place entries into the event log until it becomes full. Once full, any new entries will be lost. The
BIST event log is cleared by the OS once the OS logs any BIST errors into the SEL.
Figure 10. Timing of BIST Stages
HAL initialization
(processor, cache,
serial port)
FPGA
programming
Memory
parameters
initialization
Module
initialization
(flash, zlib, ide)
Module
initialization
(ethernet interface)
Display copyright
banner, and
execute boot script
Late-BIST
Mid-BIST
Boot-BIST
Early-BIST
Done