Sun Enterprise[TM] 450 during power up OBP hangs, last message "Environmental monitoring: enabled" (Doc ID 1007577.1)

Last updated on JULY 17, 2019

Applies to:

Symptoms

Sun Enterprise 450 completes POST successfully with STATUS=PASSED, then OBP starts probing CPU's and memory

normally until the system hangs, last message " Environmental monitoring: enabled "

Sample output: . from serial port ttya, normal post messages, no problems detected

0>STATUS=PASSED

Power On Selftest Completed

Status = 0000.0000.0000.0000 ffff.ffff.f00b.4860 ffdf.ffff.0bd1.1111

POST Reset

CPU0 has assumed the role of Boot CPU

@(#) Sun 450 3.7 Version 107 created 1998/02/19 17:54

Online: CPU0 Blackbird (v1.1) 3:1 2048KB 2-2 ECache MCap 13

Online: CPU1 Blackbird (v2.0) 3:1 2048KB 2-2 ECache MCap 13

Online: CPU2 Blackbird (v2.0) 3:1 2048KB 2-2 ECache MCap 13

Online: CPU3 Blackbird (v1.1) 3:1 2048KB 2-2 ECache MCap 13

Setting system ECache size to 2048KB

Clearing DTAGS...Done

Clearing E-Cache Tags...Done

Clearing I/D TLBs...Done

Probing Memory...Done

HiMem base = 0000.0000.0000.0000 size = 0000.0000.2000.0000

Clearing Memory...including Unix Retained Memory...Done

MMUs ON

Copying ROM to RAM...Done

ROM PC = 0000.01ff.f000.4b40

RAM PC = 0000.0000.0000.4b88

RAM CRC = 0000.0000

2ea7.1606; ROM CRC = 0000.0000.2ea7.1606

Decompressing into Memory...0000.0000.0004.523c (277KB)...Done

Size = 0000.0000.0008.4b00 (531KB)

Starting Forth kernel at 0000.0000.f005.6b68

ttya initialized

Memory in 2 - way interleave configuration

...Bank #0 64 + 64 + 64 + 64 : 256 MB

...Bank #1 64 + 64 + 64 + 64 : 256 MB [Available 512MB @ 0 ]

...Bank #2 0 + 0 + 0 + 0 : 0 MB [Not In Use]

...Bank #3 0 + 0 + 0 + 0 : 0 MB [Not In Use]

Environmental monitoring: enabled <------- system hung, last message outputed

Changes

Cause