1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/clocksource/dummy.c b/drivers/clocksource/dummy.c
new file mode 100644
index 0000000000..154a8cd672
--- /dev/null
+++ b/drivers/clocksource/dummy.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <clock.h>
+
+static uint64_t dummy_counter;
+
+static uint64_t dummy_cs_read(void)
+{
+	static int first;
+
+	if (!first) {
+		pr_warn("Warning: Using dummy clocksource\n");
+		first = 1;
+	}
+
+	dummy_counter += CONFIG_CLOCKSOURCE_DUMMY_RATE;
+
+	return dummy_counter;
+}
+
+static struct clocksource dummy_cs = {
+	.read	= dummy_cs_read,
+	.mask   = CLOCKSOURCE_MASK(32),
+};
+
+static int clocksource_init(void)
+{
+	dummy_counter = 0;
+
+	clocks_calc_mult_shift(&dummy_cs.mult, &dummy_cs.shift,
+		100000000, NSEC_PER_SEC, 10);
+
+	pr_debug("clocksource_init: mult=%08x, shift=%08x\n",
+			dummy_cs.mult, dummy_cs.shift);
+	init_clock(&dummy_cs);
+
+	return 0;
+}
+pure_initcall(clocksource_init);