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[PATCH 7/7] ARM: virt: arch_timers: enable access to physical timers |
If booting in HYP mode, it makes sense to enable the use of the physical timers, so the kernel can use them directly. Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> --- arch/arm/kernel/hyp-stub.S | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-) diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 4ff46fa..8c288ba 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -137,6 +137,19 @@ THUMB( orr r7, #(1 << 30) ) @ HSCTLR.TE mcr p15, 4, r7, c1, c0, 0 @ HSCTLR isb +#if !defined(ZIMAGE) && defined(CONFIG_ARM_ARCH_TIMER) + @ make CNTP_* and CNTPCT accessible from PL1 + mrc p15, 0, r7, c0, c1, 1 @ ID_PFR1 + lsr r7, #16 + and r7, #0xf + cmp r7, #1 + bne 1f + mrc p15, 4, r7, c14, c1, 0 @ CNTHCTL + orr r7, r7, #3 @ PL1PCEN | PL1PCTEN + mcr p15, 4, r7, c14, c1, 0 @ CNTHCTL +1: +#endif + bic r7, r4, #MODE_MASK orr r7, r7, #SVC_MODE THUMB( orr r7, r7, #PSR_T_BIT ) -- 1.7.8.6 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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