hw/tpm/tpm_ppi.h

   1 /*
   2  * TPM Physical Presence Interface
   3  *
   4  * Copyright (C) 2018 IBM Corporation
   5  *
   6  * Authors:
   7  *  Stefan Berger    <stefanb@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12 #ifndef TPM_TPM_PPI_H
  13 #define TPM_TPM_PPI_H
  14
  15 #include "hw/acpi/tpm.h"
  16 #include "exec/address-spaces.h"
  17
  18 typedef struct TPMPPI {
  19     MemoryRegion ram;
  20     uint8_t *buf;
  21 } TPMPPI;
  22
  23 /**
  24  * tpm_ppi_init:
  25  * @tpmppi: a TPMPPI
  26  * @m: the address-space / MemoryRegion to use
  27  * @addr: the address of the PPI region
  28  * @obj: the owner object
  29  *
  30  * Register the TPM PPI memory region at @addr on the given address
  31  * space for the object @obj.
  32  **/
  33 void tpm_ppi_init(TPMPPI *tpmppi, struct MemoryRegion *m,
  34                   hwaddr addr, Object *obj);
  35
  36 /**
  37  * tpm_ppi_reset:
  38  * @tpmppi: a TPMPPI
  39  *
  40  * Function to call on machine reset. It will check if the "Memory
  41  * overwrite" variable is set, and perform a memory clear on volatile
  42  * memory if requested.
  43  **/
  44 void tpm_ppi_reset(TPMPPI *tpmppi);
  45
  46 #endif /* TPM_TPM_PPI_H */