1 /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. 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 "tlcl.h" 19 #include "tlcl_tests.h" 20 21 int main(int argc, char** argv) { 22 uint8_t disable, deactivated; 23 int i; 24 25 TlclLibInit(); 26 TPM_CHECK(TlclStartupIfNeeded()); 27 TPM_CHECK(TlclSelfTestFull()); 28 TPM_CHECK(TlclAssertPhysicalPresence()); 29 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL)); 30 printf("disable is %d, deactivated is %d\n", disable, deactivated); 31 32 for (i = 0; i < 2; i++) { 33 TPM_CHECK(TlclForceClear()); 34 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL)); 35 printf("disable is %d, deactivated is %d\n", disable, deactivated); 36 VbAssert(disable == 1 && deactivated == 1); 37 TPM_CHECK(TlclSetEnable()); 38 TPM_CHECK(TlclSetDeactivated(0)); 39 TPM_CHECK(TlclGetFlags(&disable, &deactivated, NULL)); 40 printf("disable is %d, deactivated is %d\n", disable, deactivated); 41 VbAssert(disable == 0 && deactivated == 0); 42 } 43 44 printf("TEST SUCCEEDED\n"); 45 return 0; 46 } 47
