1 files changed, 30 insertions, 0 deletions
diff --git a/src/arch/arm64/include/bits/profile.h b/src/arch/arm64/include/bits/profile.h
new file mode 100644
index 000000000..cad02ea4b
--- /dev/null
+++ b/src/arch/arm64/include/bits/profile.h
@@ -0,0 +1,30 @@
+#ifndef _BITS_PROFILE_H
+#define _BITS_PROFILE_H
+
+/** @file
+ *
+ * Profiling
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+
+/**
+ * Get profiling timestamp
+ *
+ * @ret timestamp	Timestamp
+ */
+static inline __attribute__ (( always_inline )) uint64_t
+profile_timestamp ( void ) {
+	uint64_t cycles;
+
+	/* Read cycle counter */
+	__asm__ __volatile__ ( "msr PMCR_EL0, %1\n\t"
+			       "mrs %0, PMCCNTR_EL0\n\t"
+			       : "=r" ( cycles ) : "r" ( 1 ) );
+	return cycles;
+}
+
+#endif /* _BITS_PROFILE_H */