diff --git a/xen/drivers/char/pl011.c b/xen/drivers/char/pl011.c
index 9456f20..fd87e68 100644
--- a/xen/drivers/char/pl011.c
+++ b/xen/drivers/char/pl011.c
@@ -28,6 +28,7 @@
 #include <asm/device.h>
 #include <xen/mm.h>
 #include <xen/vmap.h>
+#include <asm/pl011-uart.h>
 
 static struct pl011 {
     unsigned int baud, clock_hz, data_bits, parity, stop_bits;
@@ -41,53 +42,6 @@ static struct pl011 {
     /* bool_t probing, intr_works; */
 } pl011_com = {0};
 
-/* PL011 register addresses */
-#define DR     (0x00)
-#define RSR    (0x04)
-#define FR     (0x18)
-#define ILPR   (0x20)
-#define IBRD   (0x24)
-#define FBRD   (0x28)
-#define LCR_H  (0x2c)
-#define CR     (0x30)
-#define IFLS   (0x34)
-#define IMSC   (0x38)
-#define RIS    (0x3c)
-#define MIS    (0x40)
-#define ICR    (0x44)
-#define DMACR  (0x48)
-
-/* CR bits */
-#define RXE    (1<<9) /* Receive enable */
-#define TXE    (1<<8) /* Transmit enable */
-#define UARTEN (1<<0) /* UART enable */
-
-/* FR bits */
-#define TXFE   (1<<7) /* TX FIFO empty */
-#define RXFE   (1<<4) /* RX FIFO empty */
-
-/* LCR_H bits */
-#define SPS    (1<<7) /* Stick parity select */
-#define FEN    (1<<4) /* FIFO enable */
-#define STP2   (1<<3) /* Two stop bits select */
-#define EPS    (1<<2) /* Even parity select */
-#define PEN    (1<<1) /* Parity enable */
-#define BRK    (1<<0) /* Send break */
-
-/* Interrupt bits (IMSC, MIS, ICR) */
-#define OEI   (1<<10) /* Overrun Error interrupt mask */
-#define BEI   (1<<9)  /* Break Error interrupt mask */
-#define PEI   (1<<8)  /* Parity Error interrupt mask */
-#define FEI   (1<<7)  /* Framing Error interrupt mask */
-#define RTI   (1<<6)  /* Receive Timeout interrupt mask */
-#define TXI   (1<<5)  /* Transmit interrupt mask */
-#define RXI   (1<<4)  /* Receive interrupt mask */
-#define DSRMI (1<<3)  /* nUARTDSR Modem interrupt mask */
-#define DCDMI (1<<2)  /* nUARTDCD Modem interrupt mask */
-#define CTSMI (1<<1)  /* nUARTCTS Modem interrupt mask */
-#define RIMI  (1<<0)  /* nUARTRI Modem interrupt mask */
-#define ALLI  OEI|BEI|PEI|FEI|RTI|TXI|RXI|DSRMI|DCDMI|CTSMI|RIMI
-
 /* These parity settings can be ORed directly into the LCR. */
 #define PARITY_NONE  (0)
 #define PARITY_ODD   (PEN)
diff --git a/xen/include/asm-arm/pl011-uart.h b/xen/include/asm-arm/pl011-uart.h
new file mode 100644
index 0000000..8c4edd4
--- /dev/null
+++ b/xen/include/asm-arm/pl011-uart.h
@@ -0,0 +1,80 @@
+/*
+ * xen/include/asm-arm/pl011-uart.h
+ *
+ * Common constant definition between early printk and the UART driver
+ * for the pl011 UART
+ *
+ * Tim Deegan <tim@xen.org>
+ * Copyright (c) 2011 Citrix Systems.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ASM_ARM_PL011_H
+#define __ASM_ARM_PL011_H
+
+/* PL011 register addresses */
+#define DR     (0x00)
+#define RSR    (0x04)
+#define FR     (0x18)
+#define ILPR   (0x20)
+#define IBRD   (0x24)
+#define FBRD   (0x28)
+#define LCR_H  (0x2c)
+#define CR     (0x30)
+#define IFLS   (0x34)
+#define IMSC   (0x38)
+#define RIS    (0x3c)
+#define MIS    (0x40)
+#define ICR    (0x44)
+#define DMACR  (0x48)
+
+/* CR bits */
+#define RXE    (1<<9) /* Receive enable */
+#define TXE    (1<<8) /* Transmit enable */
+#define UARTEN (1<<0) /* UART enable */
+
+/* FR bits */
+#define TXFE   (1<<7) /* TX FIFO empty */
+#define RXFE   (1<<4) /* RX FIFO empty */
+
+/* LCR_H bits */
+#define SPS    (1<<7) /* Stick parity select */
+#define FEN    (1<<4) /* FIFO enable */
+#define STP2   (1<<3) /* Two stop bits select */
+#define EPS    (1<<2) /* Even parity select */
+#define PEN    (1<<1) /* Parity enable */
+#define BRK    (1<<0) /* Send break */
+
+/* Interrupt bits (IMSC, MIS, ICR) */
+#define OEI   (1<<10) /* Overrun Error interrupt mask */
+#define BEI   (1<<9)  /* Break Error interrupt mask */
+#define PEI   (1<<8)  /* Parity Error interrupt mask */
+#define FEI   (1<<7)  /* Framing Error interrupt mask */
+#define RTI   (1<<6)  /* Receive Timeout interrupt mask */
+#define TXI   (1<<5)  /* Transmit interrupt mask */
+#define RXI   (1<<4)  /* Receive interrupt mask */
+#define DSRMI (1<<3)  /* nUARTDSR Modem interrupt mask */
+#define DCDMI (1<<2)  /* nUARTDCD Modem interrupt mask */
+#define CTSMI (1<<1)  /* nUARTCTS Modem interrupt mask */
+#define RIMI  (1<<0)  /* nUARTRI Modem interrupt mask */
+#define ALLI  OEI|BEI|PEI|FEI|RTI|TXI|RXI|DSRMI|DCDMI|CTSMI|RIMI
+
+#endif /* __ASM_ARM_PL011_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
