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Commit 8ec58be9 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 5b6728d4

arch/arm/kernel/hyp-stub.S

+13 −0
Original line number Diff line number Diff line
@@ -142,6 +142,19 @@ THUMB( orr r7, #(1 << 30) ) @ HSCTLR.TE 
	and	r7, #0x1f		@ Preserve HPMN

	mcr	p15, 4, r7, c1, c1, 1	@ HDCR



#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	)