Specifications

With trac commands, use the –d option, which displays the BCM.0> shell. To check counters and if the link is up, use the ps and show
c commands.
nvramtool
To read and write the NVRAM bits, use the nvramtool. The BIOS uses the NVRAM bits to control testing. The EDA tools also use the
NVRAM bits.
The NVRAM is an area, usually in a battery backed-up device such as an RTC chip. The NVRAM bits do not change across reboots or
power cycles. These bits control how devices boot and how the system performs tests. The nvramtool controls both the BIOS and EDA
for testing. The bits are not common across platforms and are dened in the conguration le. When using this tool, you must write the
correct bits because the tool does not know the register details it is writing. The nvramtool displays the bit-level detail in the NVRAM
registers, depending on how you dene it in the conguration le.
Tests
There are no tests of the NVRAM. This tool only controls the bits.
CLI option
DellEmc Diag - NVRAM Tool
version 1.5, x.xx.x.x-x
build, 2017/05/23,
Syntax: nvramtool <option>
Show this help:=
nvramtool --h (or)
nvramtool -h
Read all or specfic register NVRAM values:=
nvramtool --read [--reg=<register>] (or)
nvramtool -r [-R <register>]
Write NVRAM value:=
nvramtool --write [--reg=<register> --val=<value>] (or)
nvramtool -w [-R <register> -V <value>]
Execute repeatedly command by count:=
nvramtool --iteration=max/<count> [option1] [option2]...(or)
nvramtool -I max/<count> [option1] [option2]...
Usage:
-h, --h Show the help text
-r, --read Read operation
-w, --write Write operation
-I, --iteration= Iteration command execution
-R, --reg= Register
-V, --val= Value to be set
Output
Read output
root@dell-diag-os:~# nvramtool --read
NVRAM Values:
0x00 0x9f 0x00 0xe6 0x03 0x03 0x00 0xea
Test Status Fail Bits : offset 0x50 = 0x0
7 NVRAM test = 0
Dell EMC DAIG-OS tools
55