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A comment on Ampere Altra 80-core ARM CPU. Parent comment

Re:Ampere Altra 80-core ARM CPU by eb0la on Tuesday March 03, 2020 @11:34AM (#22475991)
I see Ampere eMag is supported by OpenBSD (https://www.openbsd.org/arm64.html) :-)

It had "only" 32 cores. I still find it a lot.

I guess it would be easy to port OpenBSD to the Altra since it boots from UEFI.

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Re:Ampere Altra 80-core ARM CPU by floatboth on Tuesday March 03, 2020 @02:06PM (#22477675)
Yes. There is no "porting" with new SBSA/SBBR systems — only fixing bugs and/or adding quirks :)

On FreeBSD for the eMAG, we've had to:

- ignore a wrong value for UART access width https://svnweb.freebsd.org/base?view=revision&revision=34622... (IIRC Ampere did fix the value in the newer FW revisions)

- restore another register after calling EFI runtime services https://svnweb.freebsd.org/base?view=revision&revision=34699...

- fix some PCIe things we were doing wrong https://svnweb.freebsd.org/base?view=revision&revision=34792... https://svnweb.freebsd.org/base?view=revision&revision=34793...

- fix some memory map things https://svnweb.freebsd.org/base?view=revision&revision=34958...

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