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Differential D55946

arm64: mte: configure initial state for system registers
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Authored by andrew on Mar 19 2026, 4:05 PM.
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manu
andrew
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arm64
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rG58de79153622: arm64: mte: configure initial state for system registers
Summary

The fields in SCTLR_EL1 and HCR_EL2 for enabling MTE are set, and if the
ID_AA64PFR1_EL1 register shows MTE is present, the GCR_EL1 register is
also configured, and the two TFSR registers which hold pending tag check
faults are cleared.

Sponsored by: Arm Ltd
Signed-off-by: Harry Moulton <harry.moulton@arm.com>

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rG FreeBSD src repository
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sys/
arm64/
arm64/
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Diff 175433

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sys/arm64/arm64/locore.S

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