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>
Reviewed-by: Tom Rini <tr...@konsulko.com>
Reviewed-by: Thierry Reding <tred...@nvidia.com>
Tested-by: Thierry Reding <tred...@nvidia.com>
Tested-by: Ian Campbell <i...@hellion.org.uk>
---
arch/arm/mach-tegra/psci.S | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/mach-tegra/psci.S b/arch/arm/mach-tegra/psci.S
index e4733e6..b836da1 100644
--- a/arch/arm/mach-tegra/psci.S
+++ b/arch/arm/mach-tegra/psci.S
@@ -51,12 +51,25 @@ ENTRY(psci_arch_init)
str r5, [r4]
bl psci_get_cpu_id @ CPU ID => r0
+
+ adr r5, _sys_clock_freq
+ cmp r0, #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 @ stack top => r0
mov sp, r0
bx r6
ENDPROC(psci_arch_init)
+_sys_clock_freq:
+ .word 0
+
ENTRY(psci_cpu_off)
bl psci_cpu_off_common
--
2.1.4
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