To initialise the timer access from EL2 when HCR_EL2.E2H is set,
we must make use the CNTHCTL_EL2 formap used is appropriate.
This amounts to shifting the timer/counter enable bits by 10
to the left.
Signed-off-by: Marc Zyngier <m...@kernel.org>
---
arch/arm64/include/asm/el2_setup.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/el2_setup.h
b/arch/arm64/include/asm/el2_setup.h
index 668569adf4d3..fa1045f709bb 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -34,6 +34,11 @@
*/
.macro __init_el2_timers
mov x0, #3 // Enable EL1 physical timers
+ mrs x1, hcr_el2
+ and x1, x1, #HCR_E2H
+ cbz x1, .LnVHE_\@
+ lsl x0, x0, #10
+.LnVHE_\@:
msr cnthctl_el2, x0
msr cntvoff_el2, xzr // Clear virtual offset
.endm
--
2.34.1
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