3 files changed, 34 insertions, 0 deletions
diff --git a/include/hw/ppc/pnv_adu.h b/include/hw/ppc/pnv_adu.h
new file mode 100644
index 0000000000..b5f308627b
--- /dev/null
+++ b/include/hw/ppc/pnv_adu.h
@@ -0,0 +1,25 @@
+/*
+ * QEMU PowerPC PowerNV Emulation of some ADU behaviour
+ *
+ * Copyright (c) 2024, IBM Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef PPC_PNV_ADU_H
+#define PPC_PNV_ADU_H
+
+#include "hw/ppc/pnv.h"
+#include "hw/qdev-core.h"
+
+#define TYPE_PNV_ADU "pnv-adu"
+
+OBJECT_DECLARE_TYPE(PnvADU, PnvADUClass, PNV_ADU)
+
+struct PnvADU {
+    DeviceState xd;
+
+    MemoryRegion xscom_regs;
+};
+
+#endif /* PPC_PNV_ADU_H */
diff --git a/include/hw/ppc/pnv_chip.h b/include/hw/ppc/pnv_chip.h
index a4ed17ac59..4eaa7d3999 100644
--- a/include/hw/ppc/pnv_chip.h
+++ b/include/hw/ppc/pnv_chip.h
@@ -2,6 +2,7 @@
 #define PPC_PNV_CHIP_H
 
 #include "hw/pci-host/pnv_phb4.h"
+#include "hw/ppc/pnv_adu.h"
 #include "hw/ppc/pnv_chiptod.h"
 #include "hw/ppc/pnv_core.h"
 #include "hw/ppc/pnv_homer.h"
@@ -77,6 +78,7 @@ struct Pnv9Chip {
     PnvChip      parent_obj;
 
     /*< public >*/
+    PnvADU       adu;
     PnvXive      xive;
     Pnv9Psi      psi;
     PnvLpcController lpc;
@@ -110,6 +112,7 @@ struct Pnv10Chip {
     PnvChip      parent_obj;
 
     /*< public >*/
+    PnvADU       adu;
     PnvXive2     xive;
     Pnv9Psi      psi;
     PnvLpcController lpc;
diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h
index 6209e18492..e93d310e79 100644
--- a/include/hw/ppc/pnv_xscom.h
+++ b/include/hw/ppc/pnv_xscom.h
@@ -82,6 +82,9 @@ struct PnvXScomInterfaceClass {
 #define PNV_XSCOM_PBCQ_SPCI_BASE  0x9013c00
 #define PNV_XSCOM_PBCQ_SPCI_SIZE  0x5
 
+#define PNV9_XSCOM_ADU_BASE       0x0090000
+#define PNV9_XSCOM_ADU_SIZE       0x55
+
 /*
  * Layout of the XSCOM PCB addresses (POWER 9)
  */
@@ -128,6 +131,9 @@ struct PnvXScomInterfaceClass {
 #define PNV9_XSCOM_PEC_PCI_STK1   0x140
 #define PNV9_XSCOM_PEC_PCI_STK2   0x180
 
+#define PNV10_XSCOM_ADU_BASE      0x0090000
+#define PNV10_XSCOM_ADU_SIZE      0x55
+
 /*
  * Layout of the XSCOM PCB addresses (POWER 10)
  */