Additional cases for the test suite, and more commands added to TLCL

src/platform/tpm_lite/src/testsuite/writelimit.c

+/* 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"
+
+#define INDEX0 0xda70
+#define TPM_MAX_NV_WRITES_NOOWNER 64
+
+int main(void) {
+  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) {
+    TlclPhysicalEnable();
+    (void) TlclPhysicalSetDeactivated(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);
+}