1 files changed, 45 insertions, 0 deletions
diff --git a/hw/tpm/tpm_ppi.h b/hw/tpm/tpm_ppi.h
new file mode 100644
index 000000000..6f773c25a
--- /dev/null
+++ b/hw/tpm/tpm_ppi.h
@@ -0,0 +1,45 @@
+/*
+ * TPM Physical Presence Interface
+ *
+ * Copyright (C) 2018 IBM Corporation
+ *
+ * Authors:
+ *  Stefan Berger    <stefanb@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#ifndef TPM_TPM_PPI_H
+#define TPM_TPM_PPI_H
+
+#include "exec/address-spaces.h"
+
+typedef struct TPMPPI {
+    MemoryRegion ram;
+    uint8_t *buf;
+} TPMPPI;
+
+/**
+ * tpm_ppi_init:
+ * @tpmppi: a TPMPPI
+ * @m: the address-space / MemoryRegion to use
+ * @addr: the address of the PPI region
+ * @obj: the owner object
+ *
+ * Register the TPM PPI memory region at @addr on the given address
+ * space for the object @obj.
+ **/
+void tpm_ppi_init(TPMPPI *tpmppi, struct MemoryRegion *m,
+                  hwaddr addr, Object *obj);
+
+/**
+ * tpm_ppi_reset:
+ * @tpmppi: a TPMPPI
+ *
+ * Function to call on machine reset. It will check if the "Memory
+ * overwrite" variable is set, and perform a memory clear on volatile
+ * memory if requested.
+ **/
+void tpm_ppi_reset(TPMPPI *tpmppi);
+
+#endif /* TPM_TPM_PPI_H */