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diff --git a/include/hw/misc/tz-mpc.h b/include/hw/misc/tz-mpc.h
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+/*
+ * ARM AHB5 TrustZone Memory Protection Controller emulation
+ *
+ * Copyright (c) 2018 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+
+/* This is a model of the TrustZone memory protection controller (MPC).
+ * It is documented in the ARM CoreLink SIE-200 System IP for Embedded TRM
+ * (DDI 0571G):
+ * https://developer.arm.com/products/architecture/m-profile/docs/ddi0571/g
+ *
+ * The MPC sits in front of memory and allows secure software to
+ * configure it to either pass through or reject transactions.
+ * Rejected transactions may be configured to either be aborted, or to
+ * behave as RAZ/WI. An interrupt can be signalled for a rejected transaction.
+ *
+ * The MPC has a register interface which the guest uses to configure it.
+ *
+ * QEMU interface:
+ * + sysbus MMIO region 0: MemoryRegion for the MPC's config registers
+ * + sysbus MMIO region 1: MemoryRegion for the upstream end of the MPC
+ * + Property "downstream": MemoryRegion defining the downstream memory
+ * + Named GPIO output "irq": set for a transaction-failed interrupt
+ */
+
+#ifndef TZ_MPC_H
+#define TZ_MPC_H
+
+#include "hw/sysbus.h"
+
+#define TYPE_TZ_MPC "tz-mpc"
+#define TZ_MPC(obj) OBJECT_CHECK(TZMPC, (obj), TYPE_TZ_MPC)
+
+#define TZ_NUM_PORTS 16
+
+#define TYPE_TZ_MPC_IOMMU_MEMORY_REGION "tz-mpc-iommu-memory-region"
+
+typedef struct TZMPC TZMPC;
+
+struct TZMPC {
+    /*< private >*/
+    SysBusDevice parent_obj;
+
+    /*< public >*/
+
+    qemu_irq irq;
+
+    /* Properties */
+    MemoryRegion *downstream;
+
+    hwaddr blocksize;
+    uint32_t blk_max;
+
+    /* MemoryRegions exposed to user */
+    MemoryRegion regmr;
+    IOMMUMemoryRegion upstream;
+
+    /* MemoryRegion used internally */
+    MemoryRegion blocked_io;
+
+    AddressSpace downstream_as;
+    AddressSpace blocked_io_as;
+};
+
+#endif