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How to boot Linux on  ARM core with only ARM instructions set

Heron Zhang
Note: This was originally posted on 20th August 2012 at http://forums.arm.com

Hi all,
On the ARM core with several instructions sets,I just want use ARM instruction set to run Linux,Is that possible? if possible,where need to be modified in the Linux?or just to modify the .config file? Any reply will be appreciated.
             Thanks a lot,
              Heron
  • Note: This was originally posted on 24th August 2012 at http://forums.arm.com

    Thanks for your reply.
    About the first question,we are trying to do some test about ARM instruction set,and hope that there is no other instructions runing on the Linux and ARM core. I know that the old ARM processors which support only ARM instruction can also run linux(or μclinux),so it probably can run only ARM instruction set.
       


    About the second question, I mean if I could compile the latest linux kernel to run on the ARM processors that support ARM instruction set only?
      Thank you!



    My first question would be "why?".  You have to go back a long way to find an ARM processor that doesn't support Thumb (StrongARM anybody?).

    Second question, what is it that you mean by ARM only?  Do you mean build the kernel as ARM?  Or not allowing Thumb apps?
  • Arm Employee Badge
    Note: This was originally posted on 20th August 2012 at http://forums.arm.com

    My first question would be "why?".  You have to go back a long way to find an ARM processor that doesn't support Thumb (StrongARM anybody?).

    Second question, what is it that you mean by ARM only?  Do you mean build the kernel as ARM?  Or not allowing Thumb apps?