arm64: Fix the gicv3 check in locore.S
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Authored by andrew on Jun 7 2024, 2:27 PM.

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rGaf603143e873: arm64: Fix the gicv3 check in locore.S
rG94865825c014: arm64: Fix the gicv3 check in locore.S
rG57ef7935eb11: arm64: Fix the gicv3 check in locore.S

Summary

In locore.S we need to configure access to the GICv3. To check if it's
available we read the id_aa64pfr0_el1 register, however we then only
check if a GICv3.0 or 4.0 is present. If the system has a GICv4.1 this
check would fail.

Move to checking if the GICV3+ is not absent so this will still work if
the field is updated again.

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rG FreeBSD src repository

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Build Status

Buildable 58103
Build 54991: arc lint + arc unit

Event Timeline

andrew created this revision.Jun 7 2024, 2:27 PM

Herald added a reviewer: manu. · View Herald TranscriptJun 7 2024, 2:27 PM

Herald added subscribers: emaste, imp. · View Herald Transcript

andrew requested review of this revision.Jun 7 2024, 2:27 PM

andrew added a parent revision: D45529: arm64: Support counter access with E2H.

Harbormaster completed remote builds in B58103: Diff 139625.Jun 7 2024, 2:27 PM

This revision was not accepted when it landed; it landed in state Needs Review.Jul 23 2024, 9:52 AM

Closed by commit rG57ef7935eb11: arm64: Fix the gicv3 check in locore.S (authored by andrew). · Explain Why

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG57ef7935eb11: arm64: Fix the gicv3 check in locore.S.

andrew added a commit: rG94865825c014: arm64: Fix the gicv3 check in locore.S.Sep 2 2024, 8:51 AM

andrew added a commit: rGaf603143e873: arm64: Fix the gicv3 check in locore.S.Sep 2 2024, 9:13 AM

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sys/

arm64/

locore.S

5 lines

Diff 139625

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arm64: Fix the gicv3 check in locore.SClosedPublicActions