Service manual

2-8 Servicing the CPU
2.3 How to Replace the Boot Processor
In cases where the boot processor in a multiprocessing system is
the CPU that is in need of repair, you need to manipulate which
CPU receives data from the console terminal.
Example 2-2 Replacing the Boot Processor
F E D C B A 9 8 7 6 5 4 3 2 1 0 NODE #
A M . . . . . P P TYP
o + . . . . . + + ST1
. . . . . . . E B BPD
o + . . . . . + + ST2
. . . . . . . E B BPD
+ + . . . . . + + ST3
. . . . . . . E B BPD
. . . . + . + . + . . . + . C0 XMI +
. . . . . . . . . . . . . . C1
. . . . . . . . . . . . . . C2
. . . . . . . . . . . . . . C3
. A0 . . . . . . . ILV
.128 . . . . . . . 128Mb
Firmware Rev = V2.0-1234 SROM Rev = V1.0-0 SYS SN = GAO1234567
KN7AA1: Firmware Revision Mismatch V1.0-1625
2
P00>>>
P00>>> set cpu kn7aa1 # Set console to kn7aa1
P01>>> update -e kn7aa0 # Copy customized EEPROM envars
# from kn7aa1 to kn7aa0.
Updating kn7aa0’s EEPROM done
P01>>> set cpu kn7aa0
P00>>> update -f kn7aa1 # Copy flash ROM from kn7aa0
# to kn7aa1
Update kn7aa1’s FLASH ROMs [Y/(N)]? y
Updating kn7aa1’s FLASH ROMs ...done
P00>>> set eeprom field #
LARS> 01234567 # Enter LARS number.
Message> # Enter message.
P00>>> boot