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 /* Test of two-stage locking using bGlobalLock and PP. 7 */ 8 9 #include <stdio.h> 10 #include <stdint.h> 11 #include <stdlib.h> 12 13 #include "host_common.h" 14 #include "tlcl.h" 15 #include "tlcl_tests.h" 16 17 int main(int argc, char** argv) { 18 uint32_t zero = 0; 19 uint32_t x; 20 21 TlclLibInit(); 22 TPM_CHECK(TlclStartupIfNeeded()); 23 TPM_CHECK(TlclSelfTestFull()); 24 TPM_CHECK(TlclAssertPhysicalPresence()); 25 TPM_CHECK(TlclRead(INDEX0, (uint8_t*) &x, sizeof(x))); 26 TPM_CHECK(TlclWrite(INDEX0, (uint8_t*) &zero, sizeof(uint32_t))); 27 TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x))); 28 TPM_CHECK(TlclWrite(INDEX1, (uint8_t*) &zero, sizeof(uint32_t))); 29 TPM_CHECK(TlclSetGlobalLock()); 30 31 // Verifies that write to index0 fails. 32 x = 1; 33 TPM_EXPECT(TlclWrite(INDEX0, (uint8_t*) &x, sizeof(x)), TPM_E_AREA_LOCKED); 34 TPM_CHECK(TlclRead(INDEX0, (uint8_t*) &x, sizeof(x))); 35 VbAssert(x == 0); 36 37 // Verifies that write to index1 is still possible. 38 x = 2; 39 TPM_CHECK(TlclWrite(INDEX1, (uint8_t*) &x, sizeof(x))); 40 TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x))); 41 VbAssert(x == 2); 42 43 // Turns off PP. 44 TlclLockPhysicalPresence(); 45 46 // Verifies that write to index1 fails. 47 x = 3; 48 TPM_EXPECT(TlclWrite(INDEX1, (uint8_t*) &x, sizeof(x)), TPM_E_BAD_PRESENCE); 49 TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x))); 50 VbAssert(x == 2); 51 printf("TEST SUCCEEDED\n"); 52 exit(0); 53 } 54
