diff --git a/OvmfPkg/Include/IndustryStandard/Virtio.h b/OvmfPkg/Include/IndustryStandard/Virtio.h
index e5abe1bd6e..f1eb2ea120 100644
--- a/OvmfPkg/Include/IndustryStandard/Virtio.h
+++ b/OvmfPkg/Include/IndustryStandard/Virtio.h
@@ -4,6 +4,7 @@
   specification.
 
   Copyright (C) 2012, Red Hat, Inc.
+  Portion of Copyright (C) 2013, ARM Ltd.
 
   This program and the accompanying materials are licensed and made available
   under the terms and conditions of the BSD License which accompanies this
@@ -41,6 +42,40 @@
 #define VIRTIO_DEVICE_SPECIFIC_CONFIGURATION_OFFSET_PCI_WITH_MSI_X  24
 #define VIRTIO_DEVICE_SPECIFIC_CONFIGURATION_OFFSET_MMIO            0x100
 
+//
+// PCI VirtIo Header Offsets
+//
+#define VIRTIO_PCI_OFFSET_DEVICE_FEATURES           0x00
+#define VIRTIO_PCI_OFFSET_GUEST_FEATURES            0x04
+#define VIRTIO_PCI_OFFSET_QUEUE_ADDRESS             0x08
+#define VIRTIO_PCI_OFFSET_QUEUE_SIZE                0x0C
+#define VIRTIO_PCI_OFFSET_QUEUE_SELECT              0x0E
+#define VIRTIO_PCI_OFFSET_QUEUE_NOTIFY              0x10
+#define VIRTIO_PCI_OFFSET_QUEUE_DEVICE_STATUS       0x12
+#define VIRTIO_PCI_OFFSET_QUEUE_DEVICE_ISR          0x13
+
+//
+// MMIO VirtIo Header Offsets
+//
+#define VIRTIO_MMIO_OFFSET_MAGIC                    0x00
+#define VIRTIO_MMIO_OFFSET_VERSION                  0x04
+#define VIRTIO_MMIO_OFFSET_DEVICE_ID                0x08
+#define VIRTIO_MMIO_OFFSET_VENDOR_ID                0x0C
+#define VIRTIO_MMIO_OFFSET_HOST_FEATURES            0x10
+#define VIRTIO_MMIO_OFFSET_HOST_FEATURES_SEL        0x14
+#define VIRTIO_MMIO_OFFSET_GUEST_FEATURES           0x20
+#define VIRTIO_MMIO_OFFSET_GUEST_FEATURES_SEL       0x24
+#define VIRTIO_MMIO_OFFSET_GUEST_PAGE_SIZE          0x28
+#define VIRTIO_MMIO_OFFSET_QUEUE_SEL                0x30
+#define VIRTIO_MMIO_OFFSET_QUEUE_NUM_MAX            0x34
+#define VIRTIO_MMIO_OFFSET_QUEUE_NUM                0x38
+#define VIRTIO_MMIO_OFFSET_QUEUE_ALIGN              0x3C
+#define VIRTIO_MMIO_OFFSET_QUEUE_PFN                0x40
+#define VIRTIO_MMIO_OFFSET_QUEUE_NOTIFY             0x50
+#define VIRTIO_MMIO_OFFSET_INTERRUPT_STATUS         0x60
+#define VIRTIO_MMIO_OFFSET_INTERRUPT_ACK            0x64
+#define VIRTIO_MMIO_OFFSET_STATUS                   0x70
+
 //
 // Data in the communication area is defined as packed and accessed as
 // volatile.