Initial commit to seed TPM2.0 source code directory

LICENSE file text copied from TCG library specification. README
describes the procedure used to extract source code from parts 3 and 4
of the specification.

The python scripts and part{34}.txt files will be removed in the
following commits.

Change-Id: Ie281e6e988481831f33483053455e8aff8f3f75f
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/ClockSet.c b/ClockSet.c
new file mode 100644
index 0000000..06a8f70
--- /dev/null
+++ b/ClockSet.c
@@ -0,0 +1,49 @@
+// This file was extracted from the TCG Published
+// Trusted Platform Module Library
+// Part 3: Commands
+// Family "2.0"
+// Level 00 Revision 01.16
+// October 30, 2014
+
+#include "InternalRoutines.h"
+#include "ClockSet_fp.h"
+//
+//     Read the current TPMS_TIMER_INFO structure settings
+//
+//     Error Returns                 Meaning
+//
+//     TPM_RC_VALUE                  invalid new clock
+//
+TPM_RC
+TPM2_ClockSet(
+   ClockSet_In       *in              // IN: input parameter list
+   )
+{
+#define CLOCK_UPDATE_MASK    ((1ULL << NV_CLOCK_UPDATE_INTERVAL)- 1)
+   UINT64      clockNow;
+
+// Input Validation
+
+   // new time can not be bigger than 0xFFFF000000000000 or smaller than
+   // current clock
+   if(in->newTime > 0xFFFF000000000000ULL
+           || in->newTime < go.clock)
+       return TPM_RC_VALUE + RC_ClockSet_newTime;
+
+// Internal Data Update
+
+   // Internal Data Update
+   clockNow = go.clock;    // grab the old value
+   go.clock = in->newTime;       // set the new value
+   // Check to see if the update has caused a need for an nvClock update
+   if((in->newTime & CLOCK_UPDATE_MASK) > (clockNow & CLOCK_UPDATE_MASK))
+   {
+       CryptDrbgGetPutState(GET_STATE);
+       NvWriteReserved(NV_ORDERLY_DATA, &go);
+
+       // Now the time state is safe
+       go.clockSafe = YES;
+   }
+
+   return TPM_RC_SUCCESS;
+}