lib/machina/arch/x86/tpm.h

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GARNET_LIB_MACHINA_ARCH_X86_TPM_H_
#define GARNET_LIB_MACHINA_ARCH_X86_TPM_H_

#include <hypervisor/guest.h>
#include <hypervisor/io.h>
#include <zircon/types.h>

#include "garnet/lib/machina/address.h"

namespace machina {

// Stub TPM implementation.
class Tpm : public IoHandler {
 public:
  zx_status_t Init(Guest* guest) {
    return guest->CreateMapping(TrapType::MMIO_SYNC, kTpmPhysBase, kTpmSize, 0,
                                this);
  }

  zx_status_t Read(uint64_t addr, IoValue* value) const override {
    return ZX_OK;
  }
  zx_status_t Write(uint64_t addr, const IoValue& value) override {
    return ZX_OK;
  }
};

}  // namespace machina

#endif  // GARNET_LIB_MACHINA_ARCH_X86_TPM_H_