diff --git a/hw/hppa/hppa_hardware.h b/hw/hppa/hppa_hardware.h
index 8b6b9222cb..3f7627b98f 100644
--- a/hw/hppa/hppa_hardware.h
+++ b/hw/hppa/hppa_hardware.h
@@ -1,4 +1,5 @@
 /* HPPA cores and system support chips.  */
+/* Be aware: QEMU and seabios-hppa repositories share this file as-is. */
 
 #ifndef HW_HPPA_HPPA_HARDWARE_H
 #define HW_HPPA_HPPA_HARDWARE_H
@@ -30,6 +31,11 @@
 #define PCI_HPA         DINO_HPA        /* PCI bus */
 #define IDE_HPA         0xf9000000      /* Boot disc controller */
 
+/* offsets to DINO HPA: */
+#define DINO_PCI_ADDR           0x064
+#define DINO_CONFIG_DATA        0x068
+#define DINO_IO_DATA            0x06c
+
 #define PORT_PCI_CMD    (PCI_HPA + DINO_PCI_ADDR)
 #define PORT_PCI_DATA   (PCI_HPA + DINO_CONFIG_DATA)