1 /* Copyright 2011 The ChromiumOS Authors
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file.
4 */
5
6 /* Testing: ForceClear and behavior of disable and permanent deactivated flags.
7 *
8 * ForceClear sets the permanent disable and deactivated flags to their default
9 * value of TRUE. The specs say nothing about STCLEAR flags, so they should be
10 * left alone. This test checks that both flags may be reset without a reboot,
11 * resulting in a fully enabled and activated TPM. (We know that because
12 * ForceClear requires that the TPM be enabled and activated to run.)
13 */
14
15 #include <stdio.h>
16
17 #include "host_common.h"
18 #include "common/tests.h"
19 #include "tlcl.h"
20 #include "tlcl_tests.h"
21
main(int argc,char ** argv)22 int main(int argc, char** argv) {
23 uint8_t disable, deactivated;
24 int i;
25
26 TlclLibInit();
27 TPM_CHECK(TlclStartupIfNeeded());
28 TPM_CHECK(TlclSelfTestFull());
29 TPM_CHECK(TlclAssertPhysicalPresence());
30 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL));
31 printf("disable is %d, deactivated is %d\n", disable, deactivated);
32
33 for (i = 0; i < 2; i++) {
34 TPM_CHECK(TlclForceClear());
35 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL));
36 printf("disable is %d, deactivated is %d\n", disable, deactivated);
37 TEST_EQ(disable, 1, "after ForceClear, disable");
38 TEST_EQ(deactivated, 1, "after ForceClear, deactivated");
39 TPM_CHECK(TlclSetEnable());
40 TPM_CHECK(TlclSetDeactivated(0));
41 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL));
42 printf("disable is %d, deactivated is %d\n", disable, deactivated);
43 TEST_EQ(disable, 0, "after SetEnable, enabled");
44 TEST_EQ(deactivated, 0, "after SetDeactivated(0), activated");
45 }
46
47 printf("TEST SUCCEEDED\n");
48 return 0;
49 }
50