Reference Guide

Dell - Internal Use - Confidential
Item
Type (e.g. Flash PROM,
EEPROM)
Can user programs or
operating system write
data to it during normal
operation?
Purpose? (e.g. boot code)
the primary firmware
storage area as a part of
a firmware update
procedure.
BOSS-S1
SPI FLASH
FLASH EEPROM
No
Boot code, FW
FRU
FLASH EEPROM
No
Card manufacturing
information
LCD Bezel
Microcontroller
Internal Flash
No
bootloader and s/w
implementation of LCD
command set
PSU
MCU
Internal Flash
Yes
Boot code, FW
FRU
EEPROM
No
PSU information
Right Riser
MCU
Flash ROM
No
Riser information
Item
How is data input to this
memory?
How is this memory write
protected?
How is the memory
cleared?
Planer
PCH Internal CMOS RAM
BIOS
N/A – BIOS only control
1) Set NVRAM_CLR
jumper to clear BIOS
configuration settings at
boot and reboot system.
2) Power off the system,
remove coin cell battery
for 30 seconds, replace
battery and then power
back on.
3) Restore default
configuration in F2 system
setup menu.
BIOS SPI Flash
SPI interface via PCH
Software write protected
Not possible with any
utilities or applications
and system is not
functional if corrupted or
removed.
BIOS Data SPI Flash
SPI interface via PCH
Software write protected
Not possible with any
utilities or applications
and the system is not
functional if BIOS SPI is
corrupted or removed.
iDRAC SPI Flash
SPI interface via iDRAC
Embedded iDRAC
subsystem firmware
actively controls sub area
based write protection as
needed.
The user cannot clear
memory completely.
However, user data,
lifecycle log and archive,
SEL, and fw image
repository can be cleared
using Delete
Configuration and Retire
System, which can be