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Diffstat (limited to 'src/soc/intel/common/block/timer/timer.c')
-rw-r--r--src/soc/intel/common/block/timer/timer.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/timer/timer.c b/src/soc/intel/common/block/timer/timer.c
new file mode 100644
index 0000000000..12988856e4
--- /dev/null
+++ b/src/soc/intel/common/block/timer/timer.c
@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 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 <cpu/x86/msr.h>
+#include <cpu/x86/tsc.h>
+#include <intelblocks/msr.h>
+
+unsigned long tsc_freq_mhz(void)
+{
+ msr_t msr = rdmsr(MSR_PLATFORM_INFO);
+ return (CONFIG_CPU_BCLK_MHZ * ((msr.lo >> 8) & 0xff));
+}