Reference Guide

● Read—Reads physical memory locations. You can loop over address read cycles to look for data that is volatile or read
physical devices on the memory bus (localbus for Power-PC processors). You can specify a region, address, and count of
successive bytes to read.
● Write—Writes to a physical memory address to test write cycles and memory. Similar to the Read command, this
command takes a region, address in that region, and a comma-separated list of values to write.
Output
list Output
root@dell-diag-os:~# memtool --list
===================================
Region ID: 0
Region Name: DDR3-0
Address: dynamically allocated, Chunk: 0x2800 KB
Largest Cache Size: 0, Cache Line Size : 0
Access: d Increment: 8 Ecc: Y Iterations: 1
Configuration device: SPD (/dev/i2c-0) at 0x50, Regs 0 to 255
Tests:
Address Read Test
Address Write Test
Address Walking 1's Test
Address Walking 0's Test
Data Read Test
Data Write Test
Data Walking 1's Test
Data Walking 0's Test
Data Sliding 1's Test
Data Sliding 0's Test
Data Pattern Tests
Data Cache Test
root@dell-diag-os:~#
info Output
root@dell-diag-os:~# memtool --info
==== SPD Data ====
Density 8192 MB, Rows: 16, Cols: 10
Bus Width: 64 bits, ECC: yes
Manufacturer: Unknown
Part Number : AW48M7228BNK0M
[00000000]: 0x92 0x13 0x0b 0x08 0x05 0x22 0x00 0x09 0x0b 0x11 0x01 0x08 0x0a 0x00 0xfe
0x00
|| ....."..........
[00000010]: 0x69 0x78 0x69 0x3c 0x69 0x11 0x18 0x81 0xf0 0x0a 0x3c 0x3c 0x01 0x40 0x83
0x05
|| ixi<i.....<<.@..
[00000020]: 0x80 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x88 0x00 0x00 0x00 0x00 0x00
0x00
|| ................
[00000030]: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x0f 0x11 0x5f
0x00
|| .............._.
[00000040]: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
|| ................
[00000050]: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
|| ................
[00000060]: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
|| ................
[00000070]: 0x00 0x00 0x00 0x00 0x00 0x86 0xe3 0x05 0x16 0x04 0xb3 0xd1 0x0d 0x05 0xec
0x10
|| ................
Dell EMC DIAG OS tools
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