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riscv: Use global mimpid in identify_cpu()

Authored by nick on Aug 17 2020, 9:20 PM.



sbi_init() sets mimpid, we can use that value.

Sponsored by: Axiado

Test Plan

I've tested this on internal hardware and Qemu (with some Qemu hacks as RISCV Qemu returns 0 by default)

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rS FreeBSD src repository
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Automatic diff as part of commit; unit tests not applicable.

Event Timeline

nick requested review of this revision.Aug 17 2020, 9:20 PM

Looks good to me.

Would be nice if sbi_init() could also give us misa. ;-)

This revision is now accepted and ready to land.Aug 18 2020, 1:49 AM

Approved by: philip, kp (mentors)

Go ahead and commit this.

This revision was automatically updated to reflect the committed changes.