diff options
| author | Thierry Reding | 2015-08-20 11:42:18 +0200 |
|---|---|---|
| committer | Tom Warren | 2015-09-16 16:10:22 -0700 |
| commit | 70bcb43e7d943f5f437e84594e0b890b0869be23 (patch) | |
| tree | cd63f4cb3b9f849270970d1fe168fd3bf12dadbf | |
| parent | b9f269f60f71241500c3a28ca7a39b680eeae786 (diff) | |
armv8: Make COUNTER_FREQUENCY optional
Some platforms have the means to determine the counter frequency at
runtime, so give them an opportunity to do so.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
| -rw-r--r-- | arch/arm/cpu/armv8/start.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index e70bed462a5..da45d984d01 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -54,8 +54,10 @@ reset: orr x0, x0, #0xf /* SCR_EL3.NS|IRQ|FIQ|EA */ msr scr_el3, x0 msr cptr_el3, xzr /* Enable FP/SIMD */ +#ifdef COUNTER_FREQUENCY ldr x0, =COUNTER_FREQUENCY msr cntfrq_el0, x0 /* Initialize CNTFRQ */ +#endif b 0f 2: msr vbar_el2, x0 mov x0, #0x33ff |