/* Microsoft Reference Implementation for TPM 2.0
 *
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 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
 *  Copyright (c) Microsoft Corporation
 *
 *  All rights reserved.
 *
 *  BSD License
 *
 *  Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 *  Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS
 * IS"" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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 */
//**Introduction
// This module provides the platform specific entry and fail processing. The
// _plat__RunCommand() function is used to call to ExecuteCommand() in the TPM
// code. This function does whatever processing is necessary to set up the
// platform in anticipation of the call to the TPM including settup for error
// processing.
//
// The _plat__Fail() function is called when there is a failure in the TPM. The
// TPM code will have set the flag to indicate that the TPM is in failure mode.
// This call will then recursively call ExecuteCommand in order to build the
// failure mode response. When ExecuteCommand() returns to _plat__Fail(), the
// platform will do some platform specif operation to return to the environment
// in which the TPM is executing. For a simulator, setjmp/longjmp is used. For
// an OS, a system exit to the OS would be appropriate.

#include <setjmp.h>

#include "CompilerDependencies.h"
#include "ExecCommand_fp.h"
#include "Manufacture_fp.h"
#include "Platform.h"
#include "Platform_fp.h"
#include "_TPM_Init_fp.h"

jmp_buf s_jumpBuffer;

void _plat__RunCommand(uint32_t requestSize, unsigned char *request,
                       uint32_t *responseSize, unsigned char **response) {
  setjmp(s_jumpBuffer);
  ExecuteCommand(requestSize, request, responseSize, response);
}

_Noreturn void _plat__Fail(void) { longjmp(&s_jumpBuffer[0], 1); }

void _plat__Reset(bool forceManufacture) {
  // We ignore errors, as we don't care if the TPM has been Manufactured before.
  if (forceManufacture) {
    TPM_TearDown();
  }
  TPM_Manufacture(0);
  _plat__TimerReset();
  _TPM_Init();
}