1 files changed, 36 insertions, 0 deletions
diff --git a/src/soc/intel/quark/tsc_freq.c b/src/soc/intel/quark/tsc_freq.c
new file mode 100644
index 0000000000..a770c81bf1
--- /dev/null
+++ b/src/soc/intel/quark/tsc_freq.c
@@ -0,0 +1,36 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2015-2016 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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 <stdint.h>
+#include <cpu/x86/msr.h>
+#include <cpu/x86/tsc.h>
+
+static unsigned long bus_freq_khz(void)
+{
+	/* cpu freq = 400 MHz */
+	return 400 * 1000;
+}
+
+unsigned long tsc_freq_mhz(void)
+{
+	/* assume ratio=1 */
+	unsigned bclk_khz = bus_freq_khz();
+
+	if (!bclk_khz)
+		return 0;
+
+	return (bclk_khz * 1) / 1000;
+}