Add tpm lite to vboot reference

tests/tpm_lite/writelimit.c

Index: tests/tpm_lite/writelimit.c
diff --git a/tests/tpm_lite/writelimit.c b/tests/tpm_lite/writelimit.c
new file mode 100644
index 0000000000000000000000000000000000000000..5daef76b63cb86d3e44c73b39117099bf0a9fae2
--- /dev/null
+++ b/tests/tpm_lite/writelimit.c
@@ -0,0 +1,61 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Test of recovery when we hit the NVRAM write limit for an unowned TPM.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <tss/tcs.h>
+
+#include "tlcl.h"
+#include "utility.h"
+
+#define INDEX0 0xda70
+#define TPM_MAX_NV_WRITES_NOOWNER 64
+
+int main(int argc, char** argv) {
+  int i;
+  uint32_t result;
+  uint8_t disable, deactivated;  /* the TPM specs use these exact names */
+
+  TlclLibInit();
+
+  TlclStartup();
+  TlclSelftestfull();
+
+  TlclAssertPhysicalPresence();
+
+  result = TlclGetFlags(&disable, &deactivated);
+  printf("disable is %d, deactivated is %d\n", disable, deactivated);
+
+  if (disable || deactivated) {
+    TlclSetEnable();
+    (void) TlclSetDeactivated(0);
+    printf("TPM will be active after next reboot\n");
+    exit(0);
+  }
+
+  for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
+    printf("writing %d\n", i);
+    if ((result = TlclWrite(INDEX0, (uint8_t*)&i, sizeof(i))) != TPM_SUCCESS) {
+      switch (result) {
+      case TPM_E_MAXNVWRITES:
+        printf("Max NV writes exceeded - forcing clear\n");
+        TlclForceClear();
+        printf("Please reboot and run this program again\n");
+        exit(0);
+      default:
+        error("unexpected error code %d (0x%x)\n");
+      }
+    }
+  }
+
+  /* Done for now.
+   */
+  printf("Test completed successfully\n");
+  exit(0);
+}