Sw2-1 (Flash Write-Protect); Sw2-2 (Ipmi Flash Write Protect); Sw2-3 (Real-Time Clock Reset); Sw2-4 (Cmos Clear) - Intel NetStructure ZT 5515 Product Specification

4.2.2
Table 4.
4.2.3
Table 5.
4.2.4
Table 6.
4.2.5
Table 7.
®
Intel NetStructure
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SW2-1 (Flash Write-Protect)

Closing this switch write-protects flash memory. Open SW2-1 when installing an operating system
image (such as VxWorks) into flash or when using the FLASH.EXE utility to recover from a
corrupted BIOS or update the BIOS. The status of this switch can be read back at the Switch
Monitor register (Port E3h, bit 7). Factory default is open (not write protected). See
"Switch Monitors (E3h)" on page 80

SW2-1 Status

SW2-1
Open
BIOS (on-board flash) read/write.
(Default)
Closed BIOS (on-board flash) is write protected (read only).

SW2-2 (IPMI Flash Write Protect)

Closing this switch write-protects the IPMI firmware flash memory. Opening the switch allows
IPMI firmware updates. This switch must be open when using an update utility.

SW2-2 Status

SW2-2
Open Flash firmware read/write.
Closed (Default) Flash firmware write protected (read only).

SW2-3 (Real-Time Clock Reset)

Closing this switch will clear the CMOS real-time clock.

SW2-3 Status

SW2-3 CMOS Real Time Clock
Open (Default) Normal Operation
Closed Real Time Clock Reset

SW2-4 (CMOS Clear)

Closing this switch will clear the system CMOS. This switch is connected to GPIO35 of ICH4.

SW2-4 Status

SW2-4 CMOS Real Time Clock
Open (Default) Normal Operation
Closed Clear CMOS
TM
ZT 5515 Compute Processor Board Technical Product Specification
for the Switch Monitor Register (E3h) definition.
Function
Function
Configuration
Section C.1.5,
31