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I am trying to obtain the unique ID/serial number that is available in the processor's fuses at address 0x410 and 0x420 in Linux. I realize that I can enable the /sys/fslotp interface, but I don't want that exposed in production runtime images because accidental writes could cause the processor to stop functioning correctly.
Find Cpu Serial Number Linux
Windows doesn’t display your PC’s serial number anywhere in its interface, and neither do popular system information tools. But you can often find a PC’s serial number with a simple command, a peek in your BIOS, or on the hardware itself.
Run the WMIC Command
Open a Command Prompt window to get started. On Windows 10 or 8, right-click the Start button and select “Command Prompt”. On Windows 7, press Windows + R, type “cmd” into the Run dialog, and then press Enter.
At the Command Prompt, type the following command and then press Enter:
You’ll see the computer’s serial number displayed beneath the text “SerialNumber”. This command uses the Windows Management Instrumentation Command-line (WMIC) tool to pull the system’s serial number from its BIOS.
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If you don’t see your PC’s serial number, blame your PC’s manufacturer. The number will only appear here if the PC manufacturer saved it to your computer’s BIOS or UEFI firmware. PC manufacturers don’t always fill in the number properly. In that case, you’ll see something like “0” or “To be filled by O.E.M.” instead of an actual serial number.
Cpu Serial Number Linux 10
RELATED:How to Check Your Motherboard Model Number on Your Windows PC
This is also true if you built your own PC because the PC itself won’t have a serial number. However, you can look up the serial number of your motherboard and other components.
Check the BIOS
You may also be able to find the serial number in the BIOS or UEFI firmware settings screen. This technique won’t get you a serial number if the
wmic
command didn’t, since the command pulls the serial number from the BIOS. However, checking the BIOS could be helpful if you can’t actually sign into Windows to run the wmic
command.Gun gamecube iso. RELATED:What Does a PC’s BIOS Do, and When Should I Use It?
Access the BIOS or UEFI firmware settings screen and look around for a “Serial Number” somewhere on a system information screen. It’ll be in a different place on different PCs, but you can usually find it somewhere on the “Main” or “System” screen.
Find the Serial Number On the PC’s Hardware, Box, or Elsewhere
If you don’t see a serial number after running the
wmic
command—or if you just can’t turn the PC on or don’t have access to it—there are several other places you might find the serial number:- If you have a laptop, flip it over. On some laptops, you’ll see the number on a sticker. On others, you’ll see the number printed directly on the metal or plastic the laptop is made from. If your laptop has a removable battery, the serial number is sometimes on a sticker inside the battery compartment, under the battery.
- If you have a desktop PC, look at the back, top, or side of the case for some sort of sticker. The number may also be on a sticker inside the case, so you might have to open it up.
- If you can’t find the serial number on the PC itself, look online for instructions specific to your model. The manufacturer’s website should tell you exactly where to look.
- If you registered your PC with the manufacturer or received warranty service, the serial number should be included in the registration documentation, warranty service receipt, or email confirmation for the service.
- If you still have the original product box, it usually has the serial number printed on it—often on the same sticker with the bar code.
- If you purchased the PC online or in store, the serial number may be printed on the physical or email receipt you received.
C++ Get Cpu Serial Number Linux
And if you just can’t find your serial number at all, don’t give up hope. Gmail phishing download. If you have proof of purchase, the manufacturer still may be able to help you with whatever service you need and may even be able to find out the serial number for you.
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As far as I can tell, the above examples are specific to x86 architecture, and will not work on ARM A9.
Obviously, A9 does have a mechanism for obtaining processor and architecture information; you might be able to use inline assembly to do that. However, it seems to me there are a lot of details to worry about (looking at some of the kernel sources), enough so that it makes more sense to let the kernel people worry about detecting the features, and just read /proc/cpuinfo in userspace programs instead.
If you are worried about memory usage or similar issues, you can use low-level I/O (unistd.h) to read /proc/cpuinfo to a small buffer, splitting each line intoname : valuepairs for parsing. Parse each pair, perhaps using a helper function for each different name, populating a structure describing the current CPU architecture with the results. This may sound a bit complicated, but it is not at all difficult to do. If you are only interested in specific capabilities (as in whether certain features are available or not), it is even easier.
If you'd like to see some example code, please show the /proc/cpuinfo file from your ARM Cortex A9 first.
Obviously, A9 does have a mechanism for obtaining processor and architecture information; you might be able to use inline assembly to do that. However, it seems to me there are a lot of details to worry about (looking at some of the kernel sources), enough so that it makes more sense to let the kernel people worry about detecting the features, and just read /proc/cpuinfo in userspace programs instead.
If you are worried about memory usage or similar issues, you can use low-level I/O (unistd.h) to read /proc/cpuinfo to a small buffer, splitting each line intoname : valuepairs for parsing. Parse each pair, perhaps using a helper function for each different name, populating a structure describing the current CPU architecture with the results. This may sound a bit complicated, but it is not at all difficult to do. If you are only interested in specific capabilities (as in whether certain features are available or not), it is even easier.
If you'd like to see some example code, please show the /proc/cpuinfo file from your ARM Cortex A9 first.