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-rw-r--r--src/include/cpu/intel/speedstep.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/cpu/intel/speedstep.h b/src/include/cpu/intel/speedstep.h
index 0fa5244181..00a5b9b87d 100644
--- a/src/include/cpu/intel/speedstep.h
+++ b/src/include/cpu/intel/speedstep.h
@@ -19,6 +19,9 @@
* MA 02110-1301 USA
*/
+/* Magic value used to locate speedstep configuration in the device tree */
+#define SPEEDSTEP_APIC_MAGIC 0xACAC
+
/* MWAIT coordination I/O base address. This must match
* the \_PR_.CPU0 PM base address.
*/