1 files changed, 29 insertions, 0 deletions
diff --git a/zephyr/shim/src/hwtimer.c b/zephyr/shim/src/hwtimer.c
new file mode 100644
index 0000000000..85c72c5c59
--- /dev/null
+++ b/zephyr/shim/src/hwtimer.c
@@ -0,0 +1,29 @@
+/* Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <kernel.h>
+#include <stdint.h>
+#include <zephyr.h>
+
+#include "hwtimer.h"
+
+uint64_t __hw_clock_source_read64(void)
+{
+	return k_ticks_to_us_floor64(k_uptime_ticks());
+}
+
+uint32_t __hw_clock_event_get(void)
+{
+	/*
+	 * CrOS EC event deadlines don't quite make sense in Zephyr
+	 * terms.  Evaluate what to do about this later...
+	 */
+	return 0;
+}
+
+void udelay(unsigned us)
+{
+	k_busy_wait(us);
+}