CPU serial is 0000000000000000 from proc/cpuinfo

atian — Thu, 24 Mar 2022 10:37:18 GMT

Hello

I want to get CPU serial number,but serial from /proc/cpuinfo is 0.My kernel is Linux 4.1.15_2.0.0-g06465e7-dirty armv7l . What should I do?

$cat /proc/cpuinfo

processor : 0
model name : ARMv7 Processor rev 10 (v7l)
BogoMIPS : 3.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x2
CPU part : 0xc09
CPU revision : 10

processor : 1
model name : ARMv7 Processor rev 10 (v7l)
BogoMIPS : 3.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x2
CPU part : 0xc09
CPU revision : 10

Hardware : Freescale i.MX6 Quad/DualLite (Device Tree)
Revision : 0000
Serial : 0000000000000000

Re: CPU serial is 0000000000000000 from proc/cpuinfo

Zhiming_Liu — Tue, 29 Mar 2022 02:26:37 GMT

Hi @atian

Please refer this case :

https://community.nxp.com/t5/i-MX-Processors/How-to-access-the-i-MX6-unique-ID-serial-number-in-Linux/m-p/622143

topic CPU serial is 0000000000000000 from proc/cpuinfo in i.MX Processors

CPU serial is 0000000000000000 from proc/cpuinfo

Re: CPU serial is 0000000000000000 from proc/cpuinfo