Please note: We are aware of an issue affecting replies on the Arm Community forums, which may not be loading as expected.

We apologize for any inconvenience and appreciate your patience while we investigate and work to resolve the issue.

Thank you for your understanding.

  • State Accepted Answer
  • +1 person also asked this people also asked this
  • Locked Locked
  • Replies 3 replies
  • Subscribers 347 subscribers
  • Views 4544 views
  • Users 0 members are here
Options
Related
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Can I map the code/data memory as device memory

allen.zhang

For example, map the EL3 firmware memory as device memory, What we should concern? Thanks!

Parents Reply Children
  • 0 Arm Employee Badge in reply to allen.zhang
    Hi,

    IO memory needs to be uncached but Device memory is always uncached so that is cool.

    Instructions must be in Normal memory, which can be cached or uncached.

    @EL3 with the MMU off *all* data accesses will be to Device memory and *all* instruction fetches will be to Normal memory. The address range doesn't matter.