diff --git a/src/drivers/pc80/tpm/tis.c b/src/drivers/pc80/tpm/tis.c
index 1baab26..39fa70d 100644
--- a/src/drivers/pc80/tpm/tis.c
+++ b/src/drivers/pc80/tpm/tis.c
@@ -31,7 +31,6 @@
 #include <device/device.h>
 #include <console/console.h>
 #include <security/tpm/tis.h>
-#include <arch/early_variables.h>
 #include <device/pnp.h>
 #include "chip.h"
 
@@ -162,7 +161,7 @@
  * Cached vendor/device ID pair to indicate that the device has been already
  * discovered
  */
-static u32 vendor_dev_id CAR_GLOBAL;
+static u32 vendor_dev_id;
 
 static inline u8 tpm_read_status(int locality)
 {
@@ -402,7 +401,7 @@
 	u16 vid, did;
 	int i;
 
-	if (car_get_var(vendor_dev_id))
+	if (vendor_dev_id)
 		return 0;  /* Already probed. */
 
 	didvid = tpm_read_did_vid(0);
@@ -411,7 +410,7 @@
 		return TPM_DRIVER_ERR;
 	}
 
-	car_set_var(vendor_dev_id, didvid);
+	vendor_dev_id = didvid;
 
 	vid = didvid & 0xffff;
 	did = (didvid >> 16) & 0xffff;