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Cortex-A9 revisions

Hugo Decharnes
Note: This was originally posted on 24th July 2013 at http://forums.arm.com

Hi,
I am writing to enquire about Cortex-A9 revisions. I have seen many updates of this core, and I have a question: "Is it possible to know the revision of the Cortex core in a SoC?"
E.g.: I have an ODROID-X2 featuring an Exynos 4412 processor, and I would know which documentations (r2pX, r3pX, or r4pX) are needed. Plus, I would also know which Issue (B or C) of the ARMv7-A is implemented.
Thank you in advance for your reply.
Parents
  • Note: This was originally posted on 24th July 2013 at http://forums.arm.com

    OK. Thank you for your replies. The reason I asked my question on this forum is that the Hardkernel' team has no idea of the revision of the Cortex-A9, and Samsung didn't answer. I will try to discover it with Main ID Register, but what is the encoding? Gives it the revision or the Issue of the Cortex-A9?Finally, what is the difference between the Issues of ARMv7-A (B and C)?Thanks again for your replies.
Reply
  • Note: This was originally posted on 24th July 2013 at http://forums.arm.com

    OK. Thank you for your replies. The reason I asked my question on this forum is that the Hardkernel' team has no idea of the revision of the Cortex-A9, and Samsung didn't answer. I will try to discover it with Main ID Register, but what is the encoding? Gives it the revision or the Issue of the Cortex-A9?Finally, what is the difference between the Issues of ARMv7-A (B and C)?Thanks again for your replies.
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