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/* Copyright (c) 2011 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 two-stage locking using bGlobalLock and PP.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include "host_common.h"
#include "tlcl.h"
#include "tlcl_tests.h"
int main(int argc, char** argv) {
uint32_t zero = 0;
uint32_t x;
TlclLibInit();
TPM_CHECK(TlclStartupIfNeeded());
TPM_CHECK(TlclSelfTestFull());
TPM_CHECK(TlclAssertPhysicalPresence());
TPM_CHECK(TlclRead(INDEX0, (uint8_t*) &x, sizeof(x)));
TPM_CHECK(TlclWrite(INDEX0, (uint8_t*) &zero, sizeof(uint32_t)));
TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x)));
TPM_CHECK(TlclWrite(INDEX1, (uint8_t*) &zero, sizeof(uint32_t)));
TPM_CHECK(TlclSetGlobalLock());
// Verifies that write to index0 fails.
x = 1;
TPM_EXPECT(TlclWrite(INDEX0, (uint8_t*) &x, sizeof(x)),
TPM_E_AREA_LOCKED);
TPM_CHECK(TlclRead(INDEX0, (uint8_t*) &x, sizeof(x)));
VbAssert(x == 0);
// Verifies that write to index1 is still possible.
x = 2;
TPM_CHECK(TlclWrite(INDEX1, (uint8_t*) &x, sizeof(x)));
TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x)));
VbAssert(x == 2);
// Turns off PP.
TlclLockPhysicalPresence();
// Verifies that write to index1 fails.
x = 3;
TPM_EXPECT(TlclWrite(INDEX1, (uint8_t*) &x, sizeof(x)),
TPM_E_BAD_PRESENCE);
TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x)));
VbAssert(x == 2);
printf("TEST SUCCEEDED\n");
exit(0);
}
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