1 files changed, 14 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/cpu/tsc_freq.c b/src/soc/intel/broadwell/cpu/tsc_freq.c
new file mode 100644
index 0000000000..4a8a34349f
--- /dev/null
+++ b/src/soc/intel/broadwell/cpu/tsc_freq.c
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <cpu/x86/msr.h>
+#include <cpu/x86/tsc.h>
+#include <soc/cpu.h>
+#include <soc/msr.h>
+
+unsigned long tsc_freq_mhz(void)
+{
+	msr_t platform_info;
+
+	platform_info = rdmsr(MSR_PLATFORM_INFO);
+	return CPU_BCLK * ((platform_info.lo >> 8) & 0xff);
+}