drivers: generic_delay_timer: Assert presence of Generic Timer
The Generic Timer is an optional extension to an ARMv7-A implementation.
The generic delay timer can be used from any architecture supported by
the Trusted Firmware. In ARMv7 it is needed to check that this feature
is present. In ARMv8 it is always present.
Change-Id: Ib7e8ec13ffbb2f64445d4ee48ed00f26e34b79b7
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h
index 9bf43bf..da8b6e4 100644
--- a/include/arch/aarch64/arch_features.h
+++ b/include/arch/aarch64/arch_features.h
@@ -11,6 +11,12 @@
#include <arch_helpers.h>
+static inline bool is_armv7_gentimer_present(void)
+{
+ /* The Generic Timer is always present in an ARMv8-A implementation */
+ return true;
+}
+
static inline bool is_armv8_2_ttcnp_present(void)
{
return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_CNP_SHIFT) &