How to get CPUID in TX2?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi,

I want to get CPU id in tx2 to make a license? how can I get it ?

Thanks.

2

Hi,

when I use asm, it will occur “impossible constraint in ‘asm’”

3

ClancyLian,

Could you elaborate the definition of “id” here?

4

Hi,

the id is series number which is different between two machine and can’t be changed by user.

5

Are you talking about the serial number of the processor?

6

Hi,

yes!

7

Hi,

when I use

dmidecode -t 4

to inquire CPU info, the system will restart. What’s the problem with it ?

Thanks.

8

Hi,

when I use lshw, i can get serial: 0324517130259, if this serial is unique, and how can I get it in program ?

nvidia@tegra-ubuntu:~$ lshw
WARNING: you should run this program as super-user.
tegra-ubuntu              
    description: Computer
    product: quill
    <b>serial: 0324517130259</b>
    width: 64 bits
    capabilities: cp15_barrier setend swp
  *-core
       description: Motherboard
       physical id: 0
       capabilities: nvidia_quill nvidia_tegra186
     *-cpu:0
          description: CPU
          product: a57_cluster_power_states
          physical id: 0
          bus info: cpu@0
          size: 345MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:1
          description: CPU
          product: a57_core_power_states
          physical id: 1
          bus info: cpu@1
          size: 2035MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:2
          description: CPU
          product: a57_crossover_thresholds
          physical id: 2
          bus info: cpu@2
          size: 2035MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:3
          description: CPU
          product: cpu
          physical id: 3
          bus info: cpu@3
          size: 345MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:4
          description: CPU
          product: cpu
          physical id: 4
          bus info: cpu@4
          size: 345MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:5
          description: CPU
          product: cpu
          physical id: 5
          bus info: cpu@5
          size: 345MHz
          capacity: 2035MHz
          capabilities: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpufreq
     *-cpu:6 DISABLED
          description: CPU
          product: cpu
          physical id: 6
          bus info: cpu@6
     *-cpu:7 DISABLED
          description: CPU
          product: cpu
          physical id: 7
          bus info: cpu@7
     *-cpu:8 DISABLED
          description: CPU
          product: cpu
          physical id: 8
          bus info: cpu@8
     *-cpu:9 DISABLED
          description: CPU
          product: denver_cluster_power_states
          physical id: 9
          bus info: cpu@9
     *-cpu:10 DISABLED
          description: CPU
          product: denver_core_power_states
          physical id: a
          bus info: cpu@10
     *-cpu:11 DISABLED
          description: CPU
          product: denver_crossover_thresholds
          physical id: b
          bus info: cpu@11
     *-cpu:12 DISABLED
          description: CPU
          product: l2-cache0
          physical id: c
          bus info: cpu@12
     *-cpu:13 DISABLED
          description: CPU
          product: l2-cache1
          physical id: d
          bus info: cpu@13
     *-memory
          description: System memory
          physical id: e
          size: 7853MiB
  *-network:0
       description: Ethernet interface
       physical id: 1
       logical name: usb0
       serial: 6a:a5:b5:0a:95:3c
       capabilities: ethernet physical
       configuration: broadcast=yes driver=g_ether driverversion=29-May-2008 firmware=tegra-xudc link=no multicast=yes
  *-network:1 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: dummy0
       serial: 0a:9d:f4:74:1d:b0
       capabilities: ethernet physical
       configuration: broadcast=yes driver=dummy driverversion=1.0
  *-network:2
       description: Ethernet interface
       physical id: 3
       logical name: wlan0
       serial: 00:04:4b:8d:93:78
       capabilities: ethernet physical
       configuration: broadcast=yes driver=wl driverversion=0 multicast=yes
  *-network:3
       description: Ethernet interface
       physical id: 4
       logical name: usb1
       serial: 5a:c0:ce:43:cf:28
       capabilities: ethernet physical
       configuration: broadcast=yes driver=g_ether driverversion=29-May-2008 firmware=tegra-xudc link=no multicast=yes
  *-network:4
       description: Ethernet interface
       physical id: 5
       logical name: eth0
       serial: 00:04:4b:8d:93:7a
       size: 100Mbit/s
       capacity: 1Gbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=eqos duplex=full ip=192.168.1.235 link=yes multicast=yes port=MII speed=100Mbit/s
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

Thanks.

9

Yes, that is unique but it is not the serial for “CPU” but the tegra.

10

dmidecode is an intel-only tool, it does not work correctly on the ARM architecture.
I think it’s a bug that it’s still built on Ubuntu for ARM.

11

See this thread: [url]https://devtalk.nvidia.com/default/topic/1027966/jetson-tx2/how-to-read-tx2-modules-serial-number-in-code-/[/url]

You can parse it from /proc/cmdline