We only set CNTFRQ in arch_timer_init for the boot CPU. But this has to
happen for all cores.
Fixing this resolves problems of KVM with emulating the generic
timer/counter.
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
arch/arm/cpu/armv7/tegra-common/psci.S | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/cpu/armv7/tegra-common/psci.S
b/arch/arm/cpu/armv7/tegra-common/psci.S
index b7501fb..63c9786 100644
--- a/arch/arm/cpu/armv7/tegra-common/psci.S
+++ b/arch/arm/cpu/armv7/tegra-common/psci.S
@@ -51,12 +51,25 @@ ENTRY(psci_arch_init)
mrc p15, 0, r4, c0, c0, 5 @ MPIDR
and r4, r4, #7 @ number of CPUs in cluster
+
+ adr r5, _sys_clock_freq
+ cmp r4, #0
+
+ mrceq p15, 0, r7, c14, c0, 0 @ read CNTFRQ from CPU0
+ streq r7, [r5]
+
+ ldrne r7, [r5]
+ mcrne p15, 0, r7, c14, c0, 0 @ write CNTFRQ to CPU1..3
+
bl psci_get_cpu_stack_top
mov sp, r5
bx r6
ENDPROC(psci_arch_init)
+_sys_clock_freq:
+ .word
+
ENTRY(psci_cpu_off)
bl psci_cpu_off_common
--
2.1.4
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